diff --git a/Logtalk/CUSTOMIZE.txt b/Logtalk/CUSTOMIZE.txt index 64681d805..c6f9c756f 100644 --- a/Logtalk/CUSTOMIZE.txt +++ b/Logtalk/CUSTOMIZE.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ This file contains detailed instructions for customizing your Logtalk @@ -31,14 +31,14 @@ operating-system requirements. For details, see the "libpaths/NOTES.txt" file. Logtalk interfaces with a specific Prolog compiler via a configuration file that can be found on the "configs" folder inside your Logtalk user folder. -These configuration files can be customized by changing the values of the -default flags that are used by Logtalk when compiling source files. For a -full description of these default flags, consult the "Running and debugging -Logtalk programs" section of the User Manual. Some of the default flags that -you may want to change include: "smart_compilation", "startup_message", -"portability", "underscore_vars", "altdirs", and the set of documentation- -related flags ("xmldocs", "xslfile", "xmlspec", and "xmlsref"). Be sure to -read the "configs/NOTES.txt" file for Prolog specific notes; some Prolog +These configuration files can be customized by changing the default values +of the flags that are used by Logtalk when compiling source files. For a +full description of these flags, consult the "Running and debugging Logtalk +programs" section of the User Manual. Some of the default flags that you may +want to change include: "smart_compilation", "startup_message", "altdirs", +"tmpdir", "portability", "underscore_vars", and the documentation-related +flags ("xmldocs", "xmldir", "xslfile", "xmlspec", and "xmlsref"). Be sure +to read the "configs/NOTES.txt" file for Prolog specific notes; some Prolog compilers do not support the whole range of compilation flag values. diff --git a/Logtalk/INSTALL.txt b/Logtalk/INSTALL.txt index 82d457fde..0202d6de3 100644 --- a/Logtalk/INSTALL.txt +++ b/Logtalk/INSTALL.txt @@ -1,17 +1,18 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ The recommended way of installing Logtalk is to use, whenever possible, one of the provided installers. This file contains detailed instructions for manual installation and configuration of Logtalk. You should also consult -the "scripts/NOTES.txt" file for a description of a set of shell scripts -that might be used for Logtalk installation on some operating-systems and -for easy Logtalk integration with popular Prolog compilers. +the "scripts/NOTES.txt" and "integration/NOTES.txt" files for a description +of a set of shell scripts that might be used for Logtalk installation on +some operating-systems and for easy Logtalk integration with popular Prolog +compilers. Note that the broad compatibility of Logtalk, both with Prolog compilers and operating-systems, together with all the possible user scenarios, means that @@ -47,21 +48,13 @@ directory can be copied to any location that its accessible by all the users for some reason, not feasible or desired). The "scripts" sub-directory contains shell scripts for easy installation of -Logtalk on MacOS X, Windows, Linux, and Unix-like (POSIX) operating systems -(see the "scripts/NOTES.txt" file for details). - ->> POSIX systems installation (starting from the Logtalk directory): +Logtalk on POSIX operating systems (see the "scripts/NOTES.txt" file for +details). Starting from the Logtalk directory, type: % cd scripts - % sudo ./lgt_install.sh + % sudo ./install.sh ->> Windows installation (starting from the Logtalk directory): - - C:\logtalk> cd scripts - C:\logtalk> cscript lgt_install.js - RESTART - -The "scripts/lgt_install.*" installation scripts make all files read-only in +This installation script makes all files read-only for non-admin users in order to avoid user tempering. This is a convenient setup for computer labs, given that making directories world-writable is a security risk. @@ -69,10 +62,10 @@ given that making directories world-writable is a security risk. 2. SETTING LOGTALK ENVIRONMENT VARIABLES You need to set two environment variables, LOGTALKHOME and LOGTALKUSER. The -environment variable LOGTALKHOME should point to the Logtalk installation +environment variable LOGTALKHOME should be set to the Logtalk installation directory. The environment variable LOGTALKUSER should point to a directory in your home directory where you want to store the user-specific Logtalk files -(for example, ~/logtalk). Both environment variables may be set for all users +(by default, ~/logtalk). Both environment variables may be set for all users by a user with administration privileges. The two environment variables can have the same value if you are the only Logtalk user on your computer and if you have full permissions to the Logtalk installation directory. In addition, @@ -103,13 +96,13 @@ Logtalk. >> Windows systems: In Windows 2000/XP, environment variables are defined using the System -properties control panel. If you are a system administrator, the "scripts/ -lgt_install.js" JScript install script sets the LOGTALKHOME environment -variable for all users and also sets the LOGTALKUSER environment variable -for the administrator user running the script. +properties control panel. If you are a system administrator, the Windows +GUI installer sets the LOGTALKHOME environment variable for all users and +also sets the LOGTALKUSER environment variable for the administrator user +running the installer. -3. COPYING THE LOGTALK USER-MODIFIABLE FILES TO USERS HOME DIRECTORIES +3. END-USER SETUP (COPYING LOGTALK USER-MODIFIABLE FILES TO USERS HOME DIRS) If you installed Logtalk on your home directory, then skip this step if you have set both Logtalk environment variables (LOGTALKHOME and LOGTALKUSER) to @@ -131,36 +124,27 @@ in the "scripts/NOTES.txt" file). The local copies made by the "cplgtdirs" scripts have both read and write permissions for the user running the script. When used with one of the -Prolog compilers for which an integration script is provided on the "scripts" -directory, this setup as the advantage of allowing each end-user to -independently customize default compilation options and library paths. +back-end Prolog compilers for which an integration script is provided on +the "integration" directory, this setup as the advantage of allowing each +end-user to independently customize default compilation options and library +paths. + +Windows (non-admin) users may also use the Logtalk GUI installer to setup +their Logtalk user folder and the LOGTALKUSER environment variable. 4. CREATING NEW PROLOG TOP-LEVELS FOR AUTOMATIC LOADING OF LOGTALK -Most Prolog compilers allows the user to define an initialization file that -is automatically consulted at startup. This initialization file may contain -directives for loading other files, such as the Logtalk configuration file -and the Logtalk compiler. The "$LOGTALKHOME/scripts" sub-directory contains -several scripts (named "make_*lgt.*") for automating the creation of these -initialization files for some Prolog compilers. In addition, be sure to read -the "configs/NOTES.txt" file notes on the Prolog compilers that you intend to -use. There are also "makeall_lgt.*" scripts that try to run all the individual -"make_*lgt.*" scripts: - ->> POSIX systems: - - % cd $LOGTALKHOME/scripts - % sudo ./makeall_lgt.sh - ->> Windows: - - C:\> cd %LOGTALKHOME%\scripts - C:\> cscript makeall_lgt.js - -This assumes that your favorite Prolog compilers are supported by the -"make_*lgt.*" scripts. If that is not the case, don't worry: just follow -the steps described in the "QUICK_START.txt" file. +Most Prolog compilers allows the user to define an initialization file +that is automatically consulted at startup. These initialization files +may contain directives for loading other files, such as the Logtalk +configuration file and the Logtalk compiler. The "$LOGTALKHOME/integration" +sub-directory contains several pre-made scripts (named "*lgt.*") for running +Logtalk with selected back-end Prolog compilers. You can use these scripts +as examples when creating initialization files for other Prolog compilers. +Be sure to read the "configs/NOTES.txt" file notes on the Prolog compilers +that you intend to use. You may also simply follow the steps described in +the "QUICK_START.txt" file. 5. CUSTOMIZING LOGTALK diff --git a/Logtalk/QUICK_START.txt b/Logtalk/QUICK_START.txt index 97162d7b5..c0852a01a 100644 --- a/Logtalk/QUICK_START.txt +++ b/Logtalk/QUICK_START.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ Quick start @@ -22,6 +22,26 @@ favorite Prolog compiler. In this case, skip the instructions below for starting up Logtalk and go straight to the instructions on running the examples. +On POSIX operating-systems, the following shell scripts are installed +by default for running Logtalk with selected back-end Prolog compilers +(which must be properly installed for running the scripts!): + + B-Prolog: bplgt (first run must use sudo) + CIAO: ciaolgt (first run must use sudo) + CxProlog: cxlgt + ECLiPSe: eclipselgt + GNU Prolog: gplgt + K-Prolog: plclgt + SICStus Prolog: sicstuslgt + SWI-Prolog: swilgt + XSB: xsblgt (first run must use sudo) + YAP: yaplgt + +On Windows systems, shortcuts for running Logtalk with selected back-end +Prolog compilers are created on the "Start Menu/Programs/Logtalk" menu. +If you get an unexpected failure when using one of the Prolog integration +scripts, consult the "configs/NOTES.txt" file for compatibility notes. + 2. Open the "manuals/index.html" file with a web browser. 3. Select the "Tutorial" link. This will provide you with a basic @@ -33,7 +53,8 @@ programs" links. This will provide you with a basic understanding of how to start Logtalk as well as how to compile and load Logtalk code. -Assuming that Logtalk supports your Prolog compiler: +In case a manual installation is necessary, and assuming that Logtalk +supports your Prolog compiler, apply the following steps: 1. Read the "NOTES.txt" file in the "configs" sub-directory to check if any patch or workaround is needed for your compiler. diff --git a/Logtalk/README.txt b/Logtalk/README.txt index e5c9a7da0..26f57f881 100644 --- a/Logtalk/README.txt +++ b/Logtalk/README.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ CONTENTS @@ -43,7 +43,8 @@ about Logtalk. 3. REGISTRATION To register as a Logtalk user either use the registration form found at -the Logtalk web site or send an email message to: +the Logtalk web site, http://logtalk.org/regform.html, or send an email +message to: registration@logtalk.org @@ -56,25 +57,7 @@ platforms (mac, pc, unix,...) (optional) 4. SUPPORT -Logtalk support is available for registered users via email to -support@logtalk.org. - -At the URL http://logtalk.org/bugs.html you can find a list of known -problems and download bug fixes. The latest news about Logtalk are -available at the URL http://logtalk.org/news.html. - -There is also a mailing list, "logtalk", used to announce new releases and -bug fixes and for discussion between registered Logtalk users, that you -may subscribe. For instructions on how to subscribe, please visit the web -page: - - http://lserv.ci.uc.pt/mailman/listinfo/logtalk - -or send an email message to: - - logtalk-request@lserv.ci.uc.pt - -with just the word "help" in the subject or in the message body. +For support options, please consult the page http://logtalk.org/support.html. 5. INSTALLATION diff --git a/Logtalk/RELEASE_NOTES.txt b/Logtalk/RELEASE_NOTES.txt index 140ab130e..a301e3987 100644 --- a/Logtalk/RELEASE_NOTES.txt +++ b/Logtalk/RELEASE_NOTES.txt @@ -1,18 +1,185 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ RELEASE NOTES ============= +2.30.1 - June 12, 2007 + + Added a new, experimental control construct, :/1, for calling imported + category predicates without using message sending mechanisms. + + Added preliminary support for static binding when calling imported + category using the new :/1 control construct for categories compiled + and loaded using the compiler option "reload(skip)". + + Added a new control construct, < + ( integer(Length) -> Length >= 0, mod_make_list(Length, List) - ; - mod_length(List, 0, Length). + ; mod_length(List, 0, Length) + ). mod_make_list(0, []):- diff --git a/Logtalk/examples/benchmarks/objects.lgt b/Logtalk/examples/benchmarks/objects.lgt new file mode 100644 index 000000000..e645b27d2 --- /dev/null +++ b/Logtalk/examples/benchmarks/objects.lgt @@ -0,0 +1,60 @@ + +:- object(object, + imports(category)). + + :- info([ + version is 3.0, + author is 'Paulo Moura', + date is 2007/06/11, + comment is 'Example object for benchmarking library predicate calls and imported category predicate calls.']). + + :- public(length/2). + + length(List, Length) :- + length(List, 0, Length). + + length([], Length, Length). + length([_| Tail], Acc, Length) :- + Acc2 is Acc + 1, + length(Tail, Acc2, Length). + + :- public(ctg_self/0). + + % call an imported category predicate by sending a message to self; + % performance will depend on the distance between "self" and "this" + % (always uses dynamic binding) + ctg_self :- + ::ctg_pred. + + :- public(ctg_direct/0). + + % call an imported category predicate directly by using the :/1 control construct; + % (static binding may be used, depending on how the category is compiled) + ctg_direct :- + :ctg_pred. + +:- end_object. + + +:- object(descendant, + extends(object)). + + :- info([ + version is 1.0, + author is 'Paulo Moura', + date is 2007/04/17, + comment is 'Example object used for simulating a small hierarchy.']). + +:- end_object. + + +:- object(leaf, + extends(descendant)). + + :- info([ + version is 1.0, + author is 'Paulo Moura', + date is 2007/04/17, + comment is 'Example object used for simulating a small hierarchy.']). + +:- end_object. diff --git a/Logtalk/examples/benchmarks/plain.lgt b/Logtalk/examples/benchmarks/plain.lgt index 94bf36a5d..a24f8c373 100644 --- a/Logtalk/examples/benchmarks/plain.lgt +++ b/Logtalk/examples/benchmarks/plain.lgt @@ -1,36 +1,42 @@ my_length(List, Length) :- - integer(Length) -> - Length >= 0, - my_make_list(Length, List) - ; - my_length(List, 0, Length). - - -my_make_list(0, []):- - !. - -my_make_list(N, [_| Tail]):- - M is N-1, - my_make_list(M, Tail). - + my_length(List, 0, Length). my_length([], Length, Length). - my_length([_| Tail], Acc, Length) :- Acc2 is Acc + 1, my_length(Tail, Acc2, Length). -:- dynamic(pred_plain/0). +:- dynamic(pred_plain/1). -db_test_plain :- - repeat(100), - assertz(pred_plain), - fail. +plain_dyndb(N) :- + assertz(pred_plain(N)), + retract(pred_plain(N)). -db_test_plain :- - retract(pred_plain), - fail. -db_test_plain. +my_between(Lower, _, Lower). +my_between(Lower, Upper, Integer) :- + Lower < Upper, + Next is Lower + 1, + my_between(Next, Upper, Integer). + + +my_repeat(_). +my_repeat(N) :- + N > 1, + N2 is N - 1, + my_repeat(N2). + + +% generate a list containing the first N non-negative integers + +generate_list(N, List) :- + generate_list(0, N, List). + +generate_list(N, N, []) :- + !. +generate_list(M, N, [M| Ms]) :- + M < N, + M2 is M + 1, + generate_list(M2, N, Ms). diff --git a/Logtalk/examples/birds/NOTES.txt b/Logtalk/examples/birds/NOTES.txt index 46ad6082f..cbe38d4f8 100644 --- a/Logtalk/examples/birds/NOTES.txt +++ b/Logtalk/examples/birds/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT file. diff --git a/Logtalk/examples/birds/SCRIPT.txt b/Logtalk/examples/birds/SCRIPT.txt index 98b2dc738..9fa91cead 100644 --- a/Logtalk/examples/birds/SCRIPT.txt +++ b/Logtalk/examples/birds/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the example and the required library files: diff --git a/Logtalk/examples/bottles/NOTES.txt b/Logtalk/examples/bottles/NOTES.txt index e78e96699..6fba898f6 100644 --- a/Logtalk/examples/bottles/NOTES.txt +++ b/Logtalk/examples/bottles/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT diff --git a/Logtalk/examples/bottles/SCRIPT.txt b/Logtalk/examples/bottles/SCRIPT.txt index 321b849e8..2fb154abd 100644 --- a/Logtalk/examples/bottles/SCRIPT.txt +++ b/Logtalk/examples/bottles/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % just load the example, which contains an initialization/1 directive diff --git a/Logtalk/examples/bricks/NOTES.txt b/Logtalk/examples/bricks/NOTES.txt index ecedf04f7..8dc13497c 100644 --- a/Logtalk/examples/bricks/NOTES.txt +++ b/Logtalk/examples/bricks/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT file. diff --git a/Logtalk/examples/bricks/SCRIPT.txt b/Logtalk/examples/bricks/SCRIPT.txt index c9dadd8b8..bb9173dcb 100644 --- a/Logtalk/examples/bricks/SCRIPT.txt +++ b/Logtalk/examples/bricks/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the example and the required library files: diff --git a/Logtalk/examples/classvars/NOTES.txt b/Logtalk/examples/classvars/NOTES.txt index 750cab058..64c580b8f 100644 --- a/Logtalk/examples/classvars/NOTES.txt +++ b/Logtalk/examples/classvars/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT file. diff --git a/Logtalk/examples/classvars/SCRIPT.txt b/Logtalk/examples/classvars/SCRIPT.txt index 956379315..d8267583d 100644 --- a/Logtalk/examples/classvars/SCRIPT.txt +++ b/Logtalk/examples/classvars/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the example: diff --git a/Logtalk/examples/dcgs/NOTES.txt b/Logtalk/examples/dcgs/NOTES.txt index 5f84e9be8..d6892a63e 100644 --- a/Logtalk/examples/dcgs/NOTES.txt +++ b/Logtalk/examples/dcgs/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT file. diff --git a/Logtalk/examples/dcgs/SCRIPT.txt b/Logtalk/examples/dcgs/SCRIPT.txt index 6bed6e22e..2900268cd 100644 --- a/Logtalk/examples/dcgs/SCRIPT.txt +++ b/Logtalk/examples/dcgs/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the example: diff --git a/Logtalk/examples/diamonds/NOTES.txt b/Logtalk/examples/diamonds/NOTES.txt index b23d94bcf..0dd26c729 100644 --- a/Logtalk/examples/diamonds/NOTES.txt +++ b/Logtalk/examples/diamonds/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT diff --git a/Logtalk/examples/diamonds/SCRIPT.txt b/Logtalk/examples/diamonds/SCRIPT.txt index d99f9faf6..fd8c9cc20 100644 --- a/Logtalk/examples/diamonds/SCRIPT.txt +++ b/Logtalk/examples/diamonds/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the example: diff --git a/Logtalk/examples/dynpred/NOTES.txt b/Logtalk/examples/dynpred/NOTES.txt index 22547cf05..7b0bed006 100644 --- a/Logtalk/examples/dynpred/NOTES.txt +++ b/Logtalk/examples/dynpred/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT file. diff --git a/Logtalk/examples/dynpred/SCRIPT.txt b/Logtalk/examples/dynpred/SCRIPT.txt index 7825a77cd..31bb35167 100644 --- a/Logtalk/examples/dynpred/SCRIPT.txt +++ b/Logtalk/examples/dynpred/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the example: diff --git a/Logtalk/examples/encodings/NOTES.txt b/Logtalk/examples/encodings/NOTES.txt index 5579e3227..ec9ddffcb 100644 --- a/Logtalk/examples/encodings/NOTES.txt +++ b/Logtalk/examples/encodings/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT file. diff --git a/Logtalk/examples/encodings/SCRIPT.txt b/Logtalk/examples/encodings/SCRIPT.txt index 0634962e7..09a0362fb 100644 --- a/Logtalk/examples/encodings/SCRIPT.txt +++ b/Logtalk/examples/encodings/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the example: diff --git a/Logtalk/examples/engines/NOTES.txt b/Logtalk/examples/engines/NOTES.txt index 2e306e815..c7b2a569e 100644 --- a/Logtalk/examples/engines/NOTES.txt +++ b/Logtalk/examples/engines/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT diff --git a/Logtalk/examples/engines/SCRIPT.txt b/Logtalk/examples/engines/SCRIPT.txt index ef747e02d..c5323f74a 100644 --- a/Logtalk/examples/engines/SCRIPT.txt +++ b/Logtalk/examples/engines/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the example: diff --git a/Logtalk/examples/errors/NOTES.txt b/Logtalk/examples/errors/NOTES.txt index 2e5c8f8f2..aef98284d 100644 --- a/Logtalk/examples/errors/NOTES.txt +++ b/Logtalk/examples/errors/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example, please see the SCRIPT file. diff --git a/Logtalk/examples/errors/SCRIPT.txt b/Logtalk/examples/errors/SCRIPT.txt index a25a82b62..812ece52a 100644 --- a/Logtalk/examples/errors/SCRIPT.txt +++ b/Logtalk/examples/errors/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ The entities on this example are divided in two sets. The first set diff --git a/Logtalk/examples/expansion/NOTES.txt b/Logtalk/examples/expansion/NOTES.txt index 2e306e815..c7b2a569e 100644 --- a/Logtalk/examples/expansion/NOTES.txt +++ b/Logtalk/examples/expansion/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT diff --git a/Logtalk/examples/expansion/SCRIPT.txt b/Logtalk/examples/expansion/SCRIPT.txt index 841bcd269..371fedfe5 100644 --- a/Logtalk/examples/expansion/SCRIPT.txt +++ b/Logtalk/examples/expansion/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the example: diff --git a/Logtalk/examples/hello_world/NOTES.txt b/Logtalk/examples/hello_world/NOTES.txt index 39fab0d3a..a288a28a1 100644 --- a/Logtalk/examples/hello_world/NOTES.txt +++ b/Logtalk/examples/hello_world/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ No self-respected programming language could do without a "Hello diff --git a/Logtalk/examples/hello_world/SCRIPT.txt b/Logtalk/examples/hello_world/SCRIPT.txt index a57d83e04..901655819 100644 --- a/Logtalk/examples/hello_world/SCRIPT.txt +++ b/Logtalk/examples/hello_world/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % just load the example and check the output message: diff --git a/Logtalk/examples/hooks/NOTES.txt b/Logtalk/examples/hooks/NOTES.txt index 23c840ff4..988a201a0 100644 --- a/Logtalk/examples/hooks/NOTES.txt +++ b/Logtalk/examples/hooks/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT file. diff --git a/Logtalk/examples/hooks/SCRIPT.txt b/Logtalk/examples/hooks/SCRIPT.txt index 7de1b33a4..b48ee9bf3 100644 --- a/Logtalk/examples/hooks/SCRIPT.txt +++ b/Logtalk/examples/hooks/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the example: diff --git a/Logtalk/examples/inheritance/NOTES.txt b/Logtalk/examples/inheritance/NOTES.txt index c0888ba5d..755010ae7 100644 --- a/Logtalk/examples/inheritance/NOTES.txt +++ b/Logtalk/examples/inheritance/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT file. diff --git a/Logtalk/examples/inheritance/SCRIPT.txt b/Logtalk/examples/inheritance/SCRIPT.txt index adf4cb131..8444e48f9 100644 --- a/Logtalk/examples/inheritance/SCRIPT.txt +++ b/Logtalk/examples/inheritance/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the example: diff --git a/Logtalk/examples/instmethods/NOTES.txt b/Logtalk/examples/instmethods/NOTES.txt index 7d12a2997..301b29895 100644 --- a/Logtalk/examples/instmethods/NOTES.txt +++ b/Logtalk/examples/instmethods/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT file. diff --git a/Logtalk/examples/instmethods/SCRIPT.txt b/Logtalk/examples/instmethods/SCRIPT.txt index 512fd33e9..92d34337e 100644 --- a/Logtalk/examples/instmethods/SCRIPT.txt +++ b/Logtalk/examples/instmethods/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the example: diff --git a/Logtalk/examples/lo/NOTES.txt b/Logtalk/examples/lo/NOTES.txt index ae86bd2ff..33511f0cb 100644 --- a/Logtalk/examples/lo/NOTES.txt +++ b/Logtalk/examples/lo/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ The examples in this folder are adopted from the Logic&Objects system diff --git a/Logtalk/examples/lo/planner/NOTES.txt b/Logtalk/examples/lo/planner/NOTES.txt index 0c2022b2c..e35ae6bdc 100644 --- a/Logtalk/examples/lo/planner/NOTES.txt +++ b/Logtalk/examples/lo/planner/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT diff --git a/Logtalk/examples/lo/planner/SCRIPT.txt b/Logtalk/examples/lo/planner/SCRIPT.txt index 746aac493..2c4c34732 100644 --- a/Logtalk/examples/lo/planner/SCRIPT.txt +++ b/Logtalk/examples/lo/planner/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the example: diff --git a/Logtalk/examples/lo/travellers/NOTES.txt b/Logtalk/examples/lo/travellers/NOTES.txt index 0c2022b2c..e35ae6bdc 100644 --- a/Logtalk/examples/lo/travellers/NOTES.txt +++ b/Logtalk/examples/lo/travellers/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT diff --git a/Logtalk/examples/lo/travellers/SCRIPT.txt b/Logtalk/examples/lo/travellers/SCRIPT.txt index 3a7f4dfb0..73daa1b94 100644 --- a/Logtalk/examples/lo/travellers/SCRIPT.txt +++ b/Logtalk/examples/lo/travellers/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the example: diff --git a/Logtalk/examples/logic/NOTES.txt b/Logtalk/examples/logic/NOTES.txt index 9ebe5c5a8..88981489d 100644 --- a/Logtalk/examples/logic/NOTES.txt +++ b/Logtalk/examples/logic/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT diff --git a/Logtalk/examples/logic/SCRIPT.txt b/Logtalk/examples/logic/SCRIPT.txt index 812aa65f2..1720fc974 100644 --- a/Logtalk/examples/logic/SCRIPT.txt +++ b/Logtalk/examples/logic/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the example: diff --git a/Logtalk/examples/lpa/NOTES.txt b/Logtalk/examples/lpa/NOTES.txt index 06469310a..a943643ce 100644 --- a/Logtalk/examples/lpa/NOTES.txt +++ b/Logtalk/examples/lpa/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ This directory contains examples adapted from the LPA Prolog++ Reference Manual. This manual can be downloaded from the LPA web diff --git a/Logtalk/examples/lpa/faults/NOTES.txt b/Logtalk/examples/lpa/faults/NOTES.txt index 2b89991d1..dd159359a 100644 --- a/Logtalk/examples/lpa/faults/NOTES.txt +++ b/Logtalk/examples/lpa/faults/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ This example is an adaptation of the LPA Prolog++ faults example. diff --git a/Logtalk/examples/lpa/faults/SCRIPT.txt b/Logtalk/examples/lpa/faults/SCRIPT.txt index 0635c6132..1aacf2af4 100644 --- a/Logtalk/examples/lpa/faults/SCRIPT.txt +++ b/Logtalk/examples/lpa/faults/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the example and the required library files: diff --git a/Logtalk/examples/lpa/timetables/NOTES.txt b/Logtalk/examples/lpa/timetables/NOTES.txt index 765cdbfee..dff5931e4 100755 --- a/Logtalk/examples/lpa/timetables/NOTES.txt +++ b/Logtalk/examples/lpa/timetables/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ This example is an adaptation of the LPA Prolog++ timetables example. diff --git a/Logtalk/examples/lpa/timetables/SCRIPT.txt b/Logtalk/examples/lpa/timetables/SCRIPT.txt index d1489b6bb..5a1b5d8c2 100755 --- a/Logtalk/examples/lpa/timetables/SCRIPT.txt +++ b/Logtalk/examples/lpa/timetables/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the example and the required library files: diff --git a/Logtalk/examples/metainterpreters/NOTES.txt b/Logtalk/examples/metainterpreters/NOTES.txt index 96274c850..1f5f70b9a 100644 --- a/Logtalk/examples/metainterpreters/NOTES.txt +++ b/Logtalk/examples/metainterpreters/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT file. diff --git a/Logtalk/examples/metainterpreters/SCRIPT.txt b/Logtalk/examples/metainterpreters/SCRIPT.txt index 5a27dfbb2..9cd648a51 100644 --- a/Logtalk/examples/metainterpreters/SCRIPT.txt +++ b/Logtalk/examples/metainterpreters/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the example: diff --git a/Logtalk/examples/metapredicates/NOTES.txt b/Logtalk/examples/metapredicates/NOTES.txt index 836ed1e3c..fec1c4cd1 100644 --- a/Logtalk/examples/metapredicates/NOTES.txt +++ b/Logtalk/examples/metapredicates/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT file. diff --git a/Logtalk/examples/metapredicates/SCRIPT.txt b/Logtalk/examples/metapredicates/SCRIPT.txt index 09a9c244e..939f857ff 100644 --- a/Logtalk/examples/metapredicates/SCRIPT.txt +++ b/Logtalk/examples/metapredicates/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the example and the required library files: diff --git a/Logtalk/examples/mi/NOTES.txt b/Logtalk/examples/mi/NOTES.txt index 026220e4e..53d547c70 100644 --- a/Logtalk/examples/mi/NOTES.txt +++ b/Logtalk/examples/mi/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT file. diff --git a/Logtalk/examples/mi/SCRIPT.txt b/Logtalk/examples/mi/SCRIPT.txt index 3635a5c34..b926ead63 100644 --- a/Logtalk/examples/mi/SCRIPT.txt +++ b/Logtalk/examples/mi/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the example: diff --git a/Logtalk/examples/miscellaneous/NOTES.txt b/Logtalk/examples/miscellaneous/NOTES.txt index 37268a69c..ff3b03542 100644 --- a/Logtalk/examples/miscellaneous/NOTES.txt +++ b/Logtalk/examples/miscellaneous/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT file. diff --git a/Logtalk/examples/miscellaneous/SCRIPT.txt b/Logtalk/examples/miscellaneous/SCRIPT.txt index 9bdffd436..0134803bc 100644 --- a/Logtalk/examples/miscellaneous/SCRIPT.txt +++ b/Logtalk/examples/miscellaneous/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the example and the required library files: diff --git a/Logtalk/examples/modules/NOTES.txt b/Logtalk/examples/modules/NOTES.txt index 84e731d8b..985e00e9d 100644 --- a/Logtalk/examples/modules/NOTES.txt +++ b/Logtalk/examples/modules/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT file. diff --git a/Logtalk/examples/modules/SCRIPT.txt b/Logtalk/examples/modules/SCRIPT.txt index ac0470d39..66289d171 100644 --- a/Logtalk/examples/modules/SCRIPT.txt +++ b/Logtalk/examples/modules/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by compiling and loading the Prolog module files as objects: diff --git a/Logtalk/examples/msglog/NOTES.txt b/Logtalk/examples/msglog/NOTES.txt index 5a898ab88..b37ec55b3 100644 --- a/Logtalk/examples/msglog/NOTES.txt +++ b/Logtalk/examples/msglog/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT file. diff --git a/Logtalk/examples/msglog/SCRIPT.txt b/Logtalk/examples/msglog/SCRIPT.txt index fe01a10d7..3b2ad9398 100644 --- a/Logtalk/examples/msglog/SCRIPT.txt +++ b/Logtalk/examples/msglog/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the example and the required library files: diff --git a/Logtalk/examples/operators/NOTES.txt b/Logtalk/examples/operators/NOTES.txt index 3fd2839cf..c376e5eab 100644 --- a/Logtalk/examples/operators/NOTES.txt +++ b/Logtalk/examples/operators/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT file. diff --git a/Logtalk/examples/operators/SCRIPT.txt b/Logtalk/examples/operators/SCRIPT.txt index c9d74fc4c..2dad2ffa7 100644 --- a/Logtalk/examples/operators/SCRIPT.txt +++ b/Logtalk/examples/operators/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the example: diff --git a/Logtalk/examples/parametric/NOTES.txt b/Logtalk/examples/parametric/NOTES.txt index 575a4bd51..71f007fe9 100644 --- a/Logtalk/examples/parametric/NOTES.txt +++ b/Logtalk/examples/parametric/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT file. diff --git a/Logtalk/examples/parametric/SCRIPT.txt b/Logtalk/examples/parametric/SCRIPT.txt index baec689c3..5e8b2c233 100644 --- a/Logtalk/examples/parametric/SCRIPT.txt +++ b/Logtalk/examples/parametric/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the example: diff --git a/Logtalk/examples/points/NOTES.txt b/Logtalk/examples/points/NOTES.txt index 6676f1e67..e4e3ca66b 100644 --- a/Logtalk/examples/points/NOTES.txt +++ b/Logtalk/examples/points/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT file. diff --git a/Logtalk/examples/points/SCRIPT.txt b/Logtalk/examples/points/SCRIPT.txt index 3aab14b7f..0e784a100 100644 --- a/Logtalk/examples/points/SCRIPT.txt +++ b/Logtalk/examples/points/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the example and the required library files: diff --git a/Logtalk/examples/polygons/NOTES.txt b/Logtalk/examples/polygons/NOTES.txt index 9e6580484..9c5f18242 100644 --- a/Logtalk/examples/polygons/NOTES.txt +++ b/Logtalk/examples/polygons/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT file. diff --git a/Logtalk/examples/polygons/SCRIPT.txt b/Logtalk/examples/polygons/SCRIPT.txt index cff6ae0fa..36a72c82f 100644 --- a/Logtalk/examples/polygons/SCRIPT.txt +++ b/Logtalk/examples/polygons/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the example and the required library files: diff --git a/Logtalk/examples/profiling/NOTES.txt b/Logtalk/examples/profiling/NOTES.txt index bb6f8dc25..2b1a76f43 100644 --- a/Logtalk/examples/profiling/NOTES.txt +++ b/Logtalk/examples/profiling/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT file. diff --git a/Logtalk/examples/profiling/SCRIPT.txt b/Logtalk/examples/profiling/SCRIPT.txt index aa6bd84a5..ba7da80f3 100644 --- a/Logtalk/examples/profiling/SCRIPT.txt +++ b/Logtalk/examples/profiling/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the example and the required library files: diff --git a/Logtalk/examples/proxies/NOTES.txt b/Logtalk/examples/proxies/NOTES.txt index 7a9d84da2..0c10cf577 100644 --- a/Logtalk/examples/proxies/NOTES.txt +++ b/Logtalk/examples/proxies/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT file. diff --git a/Logtalk/examples/proxies/SCRIPT.txt b/Logtalk/examples/proxies/SCRIPT.txt index a618cad62..e1a2d8089 100644 --- a/Logtalk/examples/proxies/SCRIPT.txt +++ b/Logtalk/examples/proxies/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the example: diff --git a/Logtalk/examples/puzzles/NOTES.txt b/Logtalk/examples/puzzles/NOTES.txt index caf13d8c2..11d38c995 100644 --- a/Logtalk/examples/puzzles/NOTES.txt +++ b/Logtalk/examples/puzzles/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT diff --git a/Logtalk/examples/puzzles/SCRIPT.txt b/Logtalk/examples/puzzles/SCRIPT.txt index 45ed1e7bd..84475ae01 100644 --- a/Logtalk/examples/puzzles/SCRIPT.txt +++ b/Logtalk/examples/puzzles/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the example and the required library files: diff --git a/Logtalk/examples/reflection/NOTES.txt b/Logtalk/examples/reflection/NOTES.txt index 5b9296556..6af231ce2 100644 --- a/Logtalk/examples/reflection/NOTES.txt +++ b/Logtalk/examples/reflection/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ Run this example with no other examples loaded at the same time. diff --git a/Logtalk/examples/reflection/SCRIPT.txt b/Logtalk/examples/reflection/SCRIPT.txt index 1aa530888..c534e2773 100644 --- a/Logtalk/examples/reflection/SCRIPT.txt +++ b/Logtalk/examples/reflection/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the example: diff --git a/Logtalk/examples/relations/NOTES.txt b/Logtalk/examples/relations/NOTES.txt index 95f1e36d4..fd30c0dfe 100644 --- a/Logtalk/examples/relations/NOTES.txt +++ b/Logtalk/examples/relations/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT file. diff --git a/Logtalk/examples/relations/SCRIPT.txt b/Logtalk/examples/relations/SCRIPT.txt index 7f073739c..213acac38 100644 --- a/Logtalk/examples/relations/SCRIPT.txt +++ b/Logtalk/examples/relations/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the example and the required library files: diff --git a/Logtalk/examples/roots/NOTES.txt b/Logtalk/examples/roots/NOTES.txt index 99ceaf687..07e3512f4 100644 --- a/Logtalk/examples/roots/NOTES.txt +++ b/Logtalk/examples/roots/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT file. diff --git a/Logtalk/examples/roots/SCRIPT.txt b/Logtalk/examples/roots/SCRIPT.txt index beba13fc0..930091894 100644 --- a/Logtalk/examples/roots/SCRIPT.txt +++ b/Logtalk/examples/roots/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the example and the required library files: diff --git a/Logtalk/examples/searching/NOTES.txt b/Logtalk/examples/searching/NOTES.txt index 610b76dba..585a99181 100644 --- a/Logtalk/examples/searching/NOTES.txt +++ b/Logtalk/examples/searching/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT file. diff --git a/Logtalk/examples/searching/SCRIPT.txt b/Logtalk/examples/searching/SCRIPT.txt index 1d22420a2..d831e2467 100644 --- a/Logtalk/examples/searching/SCRIPT.txt +++ b/Logtalk/examples/searching/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the example and the required library files: diff --git a/Logtalk/examples/searching/salt3.lgt b/Logtalk/examples/searching/salt3.lgt index f8bb2f0b2..b3e41f58b 100755 --- a/Logtalk/examples/searching/salt3.lgt +++ b/Logtalk/examples/searching/salt3.lgt @@ -1,119 +1,119 @@ -/* - Salt state-space search problem - - 2003 Portuguese National Logical Programming Contest problem - http://paginas.fe.up.pt/~eol/LP/0304/documents/Exercicios_CNPL.PDF - -Introduction: - Mr Silva sells salt. He has to measure the quantity requested by his - customers by using two measures and an accumulator. Neither has any - measuring markers. Those measures can easily be broken and he has to - replace them each time it happens. More, a substitution can be made - by a measure with a different capacity than the one being replaced. - -Objective: - To produce a program, given the capacity of two measures and the - intended quantity, which helps Mr. Silva knowing if it is possible - to obtain the amount requested by his customer, and if so, measuring - the intended quantity in the least amount of steps. - -Remarks: - This problem is similar to the Water Jug's' problem. It is more general, - seeing that the Water Jug's problem uses static values for the jugs - capacities and the final goal. -*/ - - -:- object(salt(_Acumulator, _Measure1, _Measure2), - instantiates(state_space)). - - - :- info([ - version is 1.0, - author is 'Paula Marisa Sampaio', - date is 2005/06/08, - comment is 'Salt state-space search problem.']). - - - % each state is represented by a compound term with four arguments: (Acumulator, Measure1, Measure2, Step) - - initial_state(initial, (0, 0, 0, all_empty)). - - - % the intended salt quantity must end up on the acumulator - - goal_state(acumulator, (Acumulator, _, _, _)) :- - parameter(1, Acumulator). - - - % state transitions: - - - % emptying a measure into the accumulator - - next_state((Acc, X, Y, _), (NewAcc, 0, Y, transfer(m1, acc))) :- - X > 0, - NewAcc is Acc + X. - - next_state((Acc, X, Y, _), (NewAcc, X, 0, transfer(m2, acc))) :- - Y > 0, - NewAcc is Acc + Y. - - - % filling up of one of the measures - - next_state((Acc, X, Y, Step), (Acc, MaxX, Y, fill(m1))) :- - parameter(2, MaxX), - X < MaxX, - Step \= empty(m1). - - next_state((Acc, X, Y, Step), (Acc, X, MaxY, fill(m2))) :- - parameter(3, MaxY), - Y < MaxY, - Step \= empty(m2). - - - % either pouring of a measure into the other till it is filled up - % or all content of a measure into the other one - - next_state((Acc, X, Y, _), (Acc, W, Z, transfer(m2, m1))) :- - parameter(2, MaxX), - Y > 0, - X < MaxX, - (X + Y >= MaxX -> - W = MaxX, - Z is Y - (MaxX - X) - ; - W is X + Y, - Z = 0 - ). - - next_state((Acc, X, Y, _), (Acc, W, Z, transfer(m1, m2))) :- - parameter(3, MaxY), - X > 0, - Y < MaxY, - (X + Y >= MaxY -> - W is X - (MaxY - Y), - Z = MaxY - ; - W = 0, - Z is X + Y - ). - - - % throwing out the contents of a measure; does not afect the accumulator - - next_state((Acc, X, Y, Step), (Acc, 0, Y, empty(m1))) :- - X > 0, - Step \= fill(m1). - - next_state((Acc, X, Y, Step), (Acc, X, 0, empty(m2))) :- - Y > 0, - Step \= fill(m2). - - - print_state((Acc, X, Y, Step)) :- - write('('), write((Acc, X, Y)), write(') '), write(Step), nl. - - -:- end_object. +/* + Salt state-space search problem + + 2003 Portuguese National Logical Programming Contest problem + http://paginas.fe.up.pt/~eol/LP/0304/documents/Exercicios_CNPL.PDF + +Introduction: + Mr Silva sells salt. He has to measure the quantity requested by his + customers by using two measures and an accumulator. Neither has any + measuring markers. Those measures can easily be broken and he has to + replace them each time it happens. More, a substitution can be made + by a measure with a different capacity than the one being replaced. + +Objective: + To produce a program, given the capacity of two measures and the + intended quantity, which helps Mr. Silva knowing if it is possible + to obtain the amount requested by his customer, and if so, measuring + the intended quantity in the least amount of steps. + +Remarks: + This problem is similar to the Water Jug's' problem. It is more general, + seeing that the Water Jug's problem uses static values for the jugs + capacities and the final goal. +*/ + + +:- object(salt(_Acumulator, _Measure1, _Measure2), + instantiates(state_space)). + + + :- info([ + version is 1.0, + author is 'Paula Marisa Sampaio', + date is 2005/06/08, + comment is 'Salt state-space search problem.']). + + + % each state is represented by a compound term with four arguments: (Acumulator, Measure1, Measure2, Step) + + initial_state(initial, (0, 0, 0, all_empty)). + + + % the intended salt quantity must end up on the acumulator + + goal_state(acumulator, (Acumulator, _, _, _)) :- + parameter(1, Acumulator). + + + % state transitions: + + + % emptying a measure into the accumulator + + next_state((Acc, X, Y, _), (NewAcc, 0, Y, transfer(m1, acc))) :- + X > 0, + NewAcc is Acc + X. + + next_state((Acc, X, Y, _), (NewAcc, X, 0, transfer(m2, acc))) :- + Y > 0, + NewAcc is Acc + Y. + + + % filling up of one of the measures + + next_state((Acc, X, Y, Step), (Acc, MaxX, Y, fill(m1))) :- + parameter(2, MaxX), + X < MaxX, + Step \= empty(m1). + + next_state((Acc, X, Y, Step), (Acc, X, MaxY, fill(m2))) :- + parameter(3, MaxY), + Y < MaxY, + Step \= empty(m2). + + + % either pouring of a measure into the other till it is filled up + % or all content of a measure into the other one + + next_state((Acc, X, Y, _), (Acc, W, Z, transfer(m2, m1))) :- + parameter(2, MaxX), + Y > 0, + X < MaxX, + (X + Y >= MaxX -> + W = MaxX, + Z is Y - (MaxX - X) + ; + W is X + Y, + Z = 0 + ). + + next_state((Acc, X, Y, _), (Acc, W, Z, transfer(m1, m2))) :- + parameter(3, MaxY), + X > 0, + Y < MaxY, + (X + Y >= MaxY -> + W is X - (MaxY - Y), + Z = MaxY + ; + W = 0, + Z is X + Y + ). + + + % throwing out the contents of a measure; does not afect the accumulator + + next_state((Acc, X, Y, Step), (Acc, 0, Y, empty(m1))) :- + X > 0, + Step \= fill(m1). + + next_state((Acc, X, Y, Step), (Acc, X, 0, empty(m2))) :- + Y > 0, + Step \= fill(m2). + + + print_state((Acc, X, Y, Step)) :- + write('('), write((Acc, X, Y)), write(') '), write(Step), nl. + + +:- end_object. diff --git a/Logtalk/examples/shapes/NOTES.txt b/Logtalk/examples/shapes/NOTES.txt index 2a1da7070..145c575e8 100644 --- a/Logtalk/examples/shapes/NOTES.txt +++ b/Logtalk/examples/shapes/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ This directory contains two versions, one prototype-based and the diff --git a/Logtalk/examples/shapes/ch/NOTES.txt b/Logtalk/examples/shapes/ch/NOTES.txt index 0c2022b2c..e35ae6bdc 100644 --- a/Logtalk/examples/shapes/ch/NOTES.txt +++ b/Logtalk/examples/shapes/ch/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT diff --git a/Logtalk/examples/shapes/ch/SCRIPT.txt b/Logtalk/examples/shapes/ch/SCRIPT.txt index 7cec5c410..0297f75a1 100644 --- a/Logtalk/examples/shapes/ch/SCRIPT.txt +++ b/Logtalk/examples/shapes/ch/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the example and the required library files: diff --git a/Logtalk/examples/shapes/ph/NOTES.txt b/Logtalk/examples/shapes/ph/NOTES.txt index 0c2022b2c..e35ae6bdc 100644 --- a/Logtalk/examples/shapes/ph/NOTES.txt +++ b/Logtalk/examples/shapes/ph/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT diff --git a/Logtalk/examples/shapes/ph/SCRIPT.txt b/Logtalk/examples/shapes/ph/SCRIPT.txt index 3700cdc1f..3eca499c5 100644 --- a/Logtalk/examples/shapes/ph/SCRIPT.txt +++ b/Logtalk/examples/shapes/ph/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the example: diff --git a/Logtalk/examples/sicstus/NOTES.txt b/Logtalk/examples/sicstus/NOTES.txt index 4049ce968..4964e2597 100644 --- a/Logtalk/examples/sicstus/NOTES.txt +++ b/Logtalk/examples/sicstus/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ The examples in this folder are adopted from the SICStus Prolog manual. diff --git a/Logtalk/examples/sicstus/SCRIPT.txt b/Logtalk/examples/sicstus/SCRIPT.txt index 5252d38bf..a0831debb 100644 --- a/Logtalk/examples/sicstus/SCRIPT.txt +++ b/Logtalk/examples/sicstus/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the example and necessary library supporting files: diff --git a/Logtalk/examples/symdiff/NOTES.txt b/Logtalk/examples/symdiff/NOTES.txt index a2c569bc0..ca5ddd270 100644 --- a/Logtalk/examples/symdiff/NOTES.txt +++ b/Logtalk/examples/symdiff/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT file. diff --git a/Logtalk/examples/symdiff/SCRIPT.txt b/Logtalk/examples/symdiff/SCRIPT.txt index 7c6d0fce6..eb5b5a04e 100644 --- a/Logtalk/examples/symdiff/SCRIPT.txt +++ b/Logtalk/examples/symdiff/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the example: diff --git a/Logtalk/examples/tabling/NOTES.txt b/Logtalk/examples/tabling/NOTES.txt new file mode 100644 index 000000000..8447eac15 --- /dev/null +++ b/Logtalk/examples/tabling/NOTES.txt @@ -0,0 +1,13 @@ +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 + +Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. +================================================================ + + +To load this example and for sample queries, please see the SCRIPT file. + +This folder contains an example of using tabled predicates within objects. +Currently supported compilers include B-Prolog, XSB, and YAP (when compiled +with tabling enabled). diff --git a/Logtalk/examples/tabling/SCRIPT.txt b/Logtalk/examples/tabling/SCRIPT.txt new file mode 100644 index 000000000..e6453e2ca --- /dev/null +++ b/Logtalk/examples/tabling/SCRIPT.txt @@ -0,0 +1,32 @@ +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 + +Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. +================================================================ + + +% start by loading the example: + +| ?- logtalk_load(tabling(loader)). +... + + +% use tabling to cope with a left-recursive path finding predicate +% (the order of the solutions may depend on the tabling strategy): + +| ?- paths::path(1, Y). + +Y = 2 ? ; +Y = 4 ? ; +Y = 3 ? ; +Y = 5 ? +yes + + +% use tabling to avoid repeated calculation of Fibonacci numbers: + +| ?- fibonacci::fib(30, F). + +F = 1346269 +yes diff --git a/Logtalk/examples/tabling/loader.lgt b/Logtalk/examples/tabling/loader.lgt new file mode 100644 index 000000000..f4df76457 --- /dev/null +++ b/Logtalk/examples/tabling/loader.lgt @@ -0,0 +1,3 @@ + +:- initialization( + logtalk_load(tabling)). diff --git a/Logtalk/examples/tabling/tabling.lgt b/Logtalk/examples/tabling/tabling.lgt new file mode 100644 index 000000000..0b6fde8ac --- /dev/null +++ b/Logtalk/examples/tabling/tabling.lgt @@ -0,0 +1,48 @@ + +:- object(paths). + + :- info([ + version is 1.0, + author is 'Paulo Moura', + date is 2007/05/14, + comment is 'Simple tabling example using graph paths.', + source is 'Direct conversion to Logtalk of a XSB tabling example.']). + + :- public(path/2). + :- table(path/2). + + path(X,Y) :- path(X,Z), edge(Z,Y). + path(X,Y) :- edge(X,Y). + + edge(1,2). + edge(2,2). + edge(2,4). + edge(2,3). + edge(3,5). + +:- end_object. + + +:- object(fibonacci). + + :- info([ + version is 1.1, + author is 'Paulo Moura', + date is 2007/05/28, + comment is 'Simple tabling example using Fibonacci numbers.', + source is 'Direct conversion to Logtalk of a B-Prolog tabling example.']). + + :- public(fib/2). + :- table(fib/2). + + fib(0, 1). + fib(1, 1). + fib(N,F) :- + N > 1, + N1 is N - 1, + N2 is N - 2, + fib(N1, F1), + fib(N2, F2), + F is F1 + F2. + +:- end_object. diff --git a/Logtalk/examples/threads/NOTES.txt b/Logtalk/examples/threads/NOTES.txt index fe1d4f2a0..3e7fbf468 100644 --- a/Logtalk/examples/threads/NOTES.txt +++ b/Logtalk/examples/threads/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ This folder contains some examples of multi-threading programming. diff --git a/Logtalk/examples/threads/birthdays/NOTES.txt b/Logtalk/examples/threads/birthdays/NOTES.txt index a46dbf59a..704e6937d 100644 --- a/Logtalk/examples/threads/birthdays/NOTES.txt +++ b/Logtalk/examples/threads/birthdays/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT file. diff --git a/Logtalk/examples/threads/birthdays/SCRIPT.txt b/Logtalk/examples/threads/birthdays/SCRIPT.txt index 8d57cd7d0..bd9310374 100644 --- a/Logtalk/examples/threads/birthdays/SCRIPT.txt +++ b/Logtalk/examples/threads/birthdays/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % load the example: diff --git a/Logtalk/examples/threads/blackboard/NOTES.txt b/Logtalk/examples/threads/blackboard/NOTES.txt index 66e066535..5e0121474 100644 --- a/Logtalk/examples/threads/blackboard/NOTES.txt +++ b/Logtalk/examples/threads/blackboard/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT file. diff --git a/Logtalk/examples/threads/blackboard/SCRIPT.txt b/Logtalk/examples/threads/blackboard/SCRIPT.txt index 74b62e2e3..6e60afbc8 100644 --- a/Logtalk/examples/threads/blackboard/SCRIPT.txt +++ b/Logtalk/examples/threads/blackboard/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the example and the required library files: diff --git a/Logtalk/examples/threads/buffer/NOTES.txt b/Logtalk/examples/threads/buffer/NOTES.txt index 6b0287736..be901fdd2 100644 --- a/Logtalk/examples/threads/buffer/NOTES.txt +++ b/Logtalk/examples/threads/buffer/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT file. diff --git a/Logtalk/examples/threads/buffer/SCRIPT.txt b/Logtalk/examples/threads/buffer/SCRIPT.txt index 21a8e8b66..10647dbea 100644 --- a/Logtalk/examples/threads/buffer/SCRIPT.txt +++ b/Logtalk/examples/threads/buffer/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the example and the required library files: diff --git a/Logtalk/examples/threads/functions/NOTES.txt b/Logtalk/examples/threads/functions/NOTES.txt index 9fd24dd19..e608af8f6 100644 --- a/Logtalk/examples/threads/functions/NOTES.txt +++ b/Logtalk/examples/threads/functions/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT file. diff --git a/Logtalk/examples/threads/functions/SCRIPT.txt b/Logtalk/examples/threads/functions/SCRIPT.txt index 0469ea22a..4ca0b2d34 100644 --- a/Logtalk/examples/threads/functions/SCRIPT.txt +++ b/Logtalk/examples/threads/functions/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the loading the example: diff --git a/Logtalk/examples/threads/nondet/NOTES.txt b/Logtalk/examples/threads/nondet/NOTES.txt index d87b738c8..fdf8b18c5 100644 --- a/Logtalk/examples/threads/nondet/NOTES.txt +++ b/Logtalk/examples/threads/nondet/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT file. diff --git a/Logtalk/examples/threads/nondet/SCRIPT.txt b/Logtalk/examples/threads/nondet/SCRIPT.txt index 2dce725f8..2595fe36f 100644 --- a/Logtalk/examples/threads/nondet/SCRIPT.txt +++ b/Logtalk/examples/threads/nondet/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the loading the example: diff --git a/Logtalk/examples/threads/philosophers/NOTES.txt b/Logtalk/examples/threads/philosophers/NOTES.txt index 3132b5e55..c11e58625 100644 --- a/Logtalk/examples/threads/philosophers/NOTES.txt +++ b/Logtalk/examples/threads/philosophers/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT file. diff --git a/Logtalk/examples/threads/philosophers/SCRIPT.txt b/Logtalk/examples/threads/philosophers/SCRIPT.txt index c2c74fb53..8670deb4e 100644 --- a/Logtalk/examples/threads/philosophers/SCRIPT.txt +++ b/Logtalk/examples/threads/philosophers/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the example and the required library files: diff --git a/Logtalk/examples/threads/primes/NOTES.txt b/Logtalk/examples/threads/primes/NOTES.txt index 1e9bec087..bea6996f0 100644 --- a/Logtalk/examples/threads/primes/NOTES.txt +++ b/Logtalk/examples/threads/primes/NOTES.txt @@ -1,18 +1,18 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT file. -This folder contains a simple multi-threading example with calculating -prime numbers in a given interval. Try to run the example in single and -multi-processor (or multi-core) computers and compare the results. Most -Prolog compilers allows you to measure the time taken for proving a goal -using proprietary predicates. +This folder contains a simple example of calculating prime numbers in a +given interval using multiple threads. Try to run the example in single +and multi-processor (or multi-core) computers and compare the results. +Most Prolog compilers allows you to measure the time taken for proving +a goal using proprietary predicates. Note that this example is only meant to illustrate how to use Logtalk multi-threading predicates, not to taken as the efficient solution for diff --git a/Logtalk/examples/threads/primes/SCRIPT.txt b/Logtalk/examples/threads/primes/SCRIPT.txt index 58a32e25e..b664ca706 100644 --- a/Logtalk/examples/threads/primes/SCRIPT.txt +++ b/Logtalk/examples/threads/primes/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the loading the example: diff --git a/Logtalk/examples/threads/sorting/NOTES.txt b/Logtalk/examples/threads/sorting/NOTES.txt new file mode 100644 index 000000000..e57a38a2e --- /dev/null +++ b/Logtalk/examples/threads/sorting/NOTES.txt @@ -0,0 +1,32 @@ +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 + +Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. +================================================================ + + +To load this example and for sample queries, please see the SCRIPT file. + +This folder contains a multi-threading implementation of the merge sort +algorithm. Depending on the size of the lists that are ordered, using +only one thread can be faster. The number of threads to use in sorting +is set using the msort/1 object parameter. You may need to adjust the +size of the memory areas used by your Prolog compiler, depending on the +size of the lists you want to sort. + +This example uses a simple implementation of the merge sort algorithm, +intended only to illustrate Logtalk multi-threading features. For any +other purpose, you may find the following paper a worthwhile reading: + +@incollection{ apt93modular, + author = "Krzysztof R. Apt and Dino Pedreschi", + title = "Modular Termination Proofs for Logic and Pure Prolog Programs.", + booktitle = "116", + month = "31", + publisher = "Centrum voor Wiskunde en Informatica (CWI)", + address = "ISSN 0169-118X", + pages = "35", + year = "1993", + url = "citeseer.ist.psu.edu/apt93modular.html" } + diff --git a/Logtalk/examples/threads/sorting/SCRIPT.txt b/Logtalk/examples/threads/sorting/SCRIPT.txt new file mode 100644 index 000000000..288d00510 --- /dev/null +++ b/Logtalk/examples/threads/sorting/SCRIPT.txt @@ -0,0 +1,83 @@ +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 + +Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. +================================================================ + + +% start by loading the example and the required library files: + +| ?- logtalk_load(sorting(loader)). +... + + +% NOTE: the example queries below use a SWI-Prolog proprietary predicate +% time/1 in order to get accurate goal times. For other Prolog compilers, +% replace the time/1 call by any appropriate timing calls (e.g. cputime/0). + + +% generate a big list of random floats and then merge sort it using a single thread: + +?- generator::list(20000, List), time(msort(1)::msort(List, Sorted)). +% 1,145,746 inferences, 0.40 CPU in 0.43 seconds (93% CPU, 2864365 Lips) + +List = [0.326219, 0.545052, 0.21687, 0.0500493, 0.772745, 0.805005, 0.574483, 0.301708, 0.670021|...], +Sorted = [1.39358e-06, 0.000206126, 0.00026088, 0.000299165, 0.000362691, 0.000397709, 0.000539889, 0.000574419, 0.000578717|...] + +Yes + + +% generate a big list of random floats and then merge sort it using two threads: + +?- generator::list(20000, List), time(msort(2)::msort(List, Sorted)). +% 80,067 inferences, 0.32 CPU in 0.21 seconds (150% CPU, 250209 Lips) + +List = [0.963245, 0.666814, 0.3841, 0.281952, 0.806571, 0.608224, 0.623344, 0.138888, 0.867367|...], +Sorted = [5.89827e-05, 0.00010463, 0.000105771, 0.000171936, 0.00022632, 0.000378509, 0.000392918, 0.00041885, 0.000482844|...] + +Yes + + +% generate a big list of random floats and then merge sort it using four threads: + +?- generator::list(20000, List), time(msort(4)::msort(List, Sorted)). +% 80,079 inferences, 0.32 CPU in 0.16 seconds (204% CPU, 250247 Lips) + +List = [0.0923009, 0.443585, 0.72304, 0.945816, 0.501491, 0.311327, 0.597448, 0.915656, 0.666957|...], +Sorted = [3.65916e-05, 4.06822e-05, 5.07434e-05, 6.09007e-05, 0.000134275, 0.000190491, 0.00024128, 0.000361441, 0.000412926|...] + +Yes + + +% generate a big list of random floats and then quick sort it using a single thread: + +?- generator::list(20000, List), time(qsort(1)::qsort(List, Sorted)). +% 1,145,746 inferences, 0.40 CPU in 0.43 seconds (93% CPU, 2864365 Lips) + +List = [0.326219, 0.545052, 0.21687, 0.0500493, 0.772745, 0.805005, 0.574483, 0.301708, 0.670021|...], +Sorted = [1.39358e-06, 0.000206126, 0.00026088, 0.000299165, 0.000362691, 0.000397709, 0.000539889, 0.000574419, 0.000578717|...] + +Yes + + +% generate a big list of random floats and then quick sort it using two threads: + +?- generator::list(20000, List), time(qsort(2)::qsort(List, Sorted)). +% 80,067 inferences, 0.32 CPU in 0.21 seconds (150% CPU, 250209 Lips) + +List = [0.963245, 0.666814, 0.3841, 0.281952, 0.806571, 0.608224, 0.623344, 0.138888, 0.867367|...], +Sorted = [5.89827e-05, 0.00010463, 0.000105771, 0.000171936, 0.00022632, 0.000378509, 0.000392918, 0.00041885, 0.000482844|...] + +Yes + + +% generate a big list of random floats and then quick sort it using four threads: + +?- generator::list(20000, List), time(qsort(4)::qsort(List, Sorted)). +% 80,079 inferences, 0.32 CPU in 0.16 seconds (204% CPU, 250247 Lips) + +List = [0.0923009, 0.443585, 0.72304, 0.945816, 0.501491, 0.311327, 0.597448, 0.915656, 0.666957|...], +Sorted = [3.65916e-05, 4.06822e-05, 5.07434e-05, 6.09007e-05, 0.000134275, 0.000190491, 0.00024128, 0.000361441, 0.000412926|...] + +Yes diff --git a/Logtalk/examples/threads/sorting/generator.lgt b/Logtalk/examples/threads/sorting/generator.lgt new file mode 100644 index 000000000..bd7679f69 --- /dev/null +++ b/Logtalk/examples/threads/sorting/generator.lgt @@ -0,0 +1,19 @@ + +:- object(generator). + + :- info([ + version is 1.0, + author is 'Paulo Moura', + date is 2007/03/22, + comment is 'Simple object defining a predicate for generating lists of random values.']). + + :- public(list/2). + + list(0, []). + list(N, [R| Rs]) :- + N > 0, + N2 is N - 1, + random::random(R), + list(N2, Rs). + +:- end_object. diff --git a/Logtalk/examples/threads/sorting/loader.lgt b/Logtalk/examples/threads/sorting/loader.lgt new file mode 100644 index 000000000..d61a685c7 --- /dev/null +++ b/Logtalk/examples/threads/sorting/loader.lgt @@ -0,0 +1,4 @@ + +:- initialization(( + logtalk_load(library(random_loader), [reload(skip)]), + logtalk_load([generator, qsort, msort]))). diff --git a/Logtalk/examples/threads/sorting/msort.lgt b/Logtalk/examples/threads/sorting/msort.lgt new file mode 100644 index 000000000..fff62ba70 --- /dev/null +++ b/Logtalk/examples/threads/sorting/msort.lgt @@ -0,0 +1,57 @@ + +:- object(msort(_Threads)). + + :- info([ + version is 1.1, + author is 'Paulo Moura and Paul Crocker', + date is 2007/03/30, + comment is 'Multi-threaded implementation of the merge sort algorithm.', + parameters is ['Threads'- 'Number of threads to use in sorting. Valid values are 1, 2, 4, 8, etc.']]). + + :- threaded. + + :- public(msort/2). + :- mode(msort(+list, -list), one). + :- info(msort/2, [ + comment is 'Sorts a list of terms into ascending order.', + argnames is ['List', 'Sorted']]). + + msort(List, Sorted) :- + parameter(1, Threads), + mt_msort(Threads, List, Sorted). + + mt_msort(1, List, Sorted) :- + st_msort(List, Sorted). + mt_msort(N, List, Sorted) :- + N > 1, + N2 is N//2, + split(List, List1, List2), + threaded(( + mt_msort(N2, List1, Sorted1), + mt_msort(N2, List2, Sorted2) + )), !, % SWI-Prolog needs help with determinism detection + merge(Sorted1, Sorted2, Sorted). + + st_msort([], []). + st_msort([X], [X]). + st_msort([X, Y| Xs], Ys) :- + split([X, Y| Xs], X1s, X2s), + st_msort(X1s, Y1s), + st_msort(X2s, Y2s), + merge(Y1s, Y2s, Ys). + + split([], [], []). + split([X| Xs], [X| Ys], Zs) :- + split(Xs, Zs, Ys). + + merge([X| Xs], [Y| Ys], [X| Zs]) :- + X =< Y, !, + merge(Xs, [Y| Ys], Zs). + merge([X| Xs], [Y| Ys], [Y| Zs]) :- + X > Y, !, + merge([X | Xs], Ys, Zs). + merge([], Xs, Xs) :- !. + merge(Xs, [], Xs). + +:- end_object. + diff --git a/Logtalk/examples/threads/sorting/qsort.lgt b/Logtalk/examples/threads/sorting/qsort.lgt new file mode 100644 index 000000000..129152456 --- /dev/null +++ b/Logtalk/examples/threads/sorting/qsort.lgt @@ -0,0 +1,50 @@ + +:- object(qsort(_Threads)). + + :- info([ + version is 1.0, + author is 'Paul Croker and Paulo Moura', + date is 2007/03/29, + comment is 'Multi-threaded version of the quick sort algorithm.', + parameters is ['Threads'- 'Number of threads to use in sorting. Valid values are 1, 2, 4, 8, 16, 32, etc.']]). + + :- threaded. + + :- public(qsort/2). + :- mode(qsort(+list, -list), one). + :- info(qsort/2, [ + comment is 'Sorts a list of terms into ascending order.', + argnames is ['List', 'Sorted']]). + + qsort(List, Sorted) :- + parameter(1, Threads), + qsort(List, [], Sorted, Threads). + + qsort([], Sorted, Sorted, _). + qsort([Pivot| Rest], Acc, Sorted, N) :- + ( N =:= 1 -> + quicksort([Pivot| Rest], Acc, Sorted) + ; N2 is N//2, + partition(Rest, Pivot, Smaller0, Bigger0), + threaded(( + qsort(Smaller0, [Pivot| Bigger], Sorted, N2), + qsort(Bigger0, Acc, Bigger, N2) + )), ! % SWI-Prolog needs help with determinism detection + ). + + partition([], _, [], []). + partition([X| Xs], Pivot, Smalls, Bigs) :- + ( X < Pivot -> + Smalls = [X| Rest], + partition(Xs, Pivot, Rest, Bigs) + ; Bigs = [X| Rest], + partition(Xs, Pivot, Smalls, Rest) + ). + + quicksort([], Sorted, Sorted). + quicksort([Pivot| Rest], Acc, Sorted) :- + partition(Rest, Pivot, Smaller0, Bigger0), + quicksort(Smaller0, [Pivot| Bigger], Sorted), + quicksort(Bigger0, Acc, Bigger). + +:- end_object. diff --git a/Logtalk/examples/threads/sync/NOTES.txt b/Logtalk/examples/threads/sync/NOTES.txt index d1dddb377..3217da67b 100644 --- a/Logtalk/examples/threads/sync/NOTES.txt +++ b/Logtalk/examples/threads/sync/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT file. diff --git a/Logtalk/examples/threads/sync/SCRIPT.txt b/Logtalk/examples/threads/sync/SCRIPT.txt index 64b633be0..2d00f314e 100644 --- a/Logtalk/examples/threads/sync/SCRIPT.txt +++ b/Logtalk/examples/threads/sync/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the loading the example: diff --git a/Logtalk/examples/viewpoints/NOTES.txt b/Logtalk/examples/viewpoints/NOTES.txt index 905180e03..929b3ab05 100644 --- a/Logtalk/examples/viewpoints/NOTES.txt +++ b/Logtalk/examples/viewpoints/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load this example and for sample queries, please see the SCRIPT file. diff --git a/Logtalk/examples/viewpoints/SCRIPT.txt b/Logtalk/examples/viewpoints/SCRIPT.txt index 3bae15fe3..604252edb 100644 --- a/Logtalk/examples/viewpoints/SCRIPT.txt +++ b/Logtalk/examples/viewpoints/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ % start by loading the example: diff --git a/Logtalk/integration/NOTES.txt b/Logtalk/integration/NOTES.txt new file mode 100644 index 000000000..8b4e759aa --- /dev/null +++ b/Logtalk/integration/NOTES.txt @@ -0,0 +1,62 @@ +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 + +Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. +================================================================ + + +This directory contains Prolog integration shell scripts and auxiliary +Prolog files. + +On POSIX systems, the Logtalk installers make the following integration +scripts available from the command-line (you may need to adjust your +system path): + + bplgt B-Prolog integration script + ciaolgt Ciao Prolog integration script + cxlgt CxProlog integration script + eclipselgt ECLiPSe integration script + gplgt GNU Prolog integration script + plclgt K-Prolog integration script + sicstuslgt SICStus Prolog integration script + swilgt SWI-Prolog integration script + xsblgt XSB integration script + yaplgt YAP integration script + +On Windows systems, the Logtalk installer makes the Prolog integration +shortcuts available from the "Start Menu/Programs/Logtalk" menu. + +The first run of the B-Prolog, Ciao, and XSB integration scripts must be +made by an user with administrative rights (on POSIX systems, run them +once as root or using sudo; in Windows systems run them once from an +administrative account). + +The GNU Prolog integration script provides adequate performance for +development. For production environments, improved performance can be +achieved by generating a new GNU-Prolog top-level that includes Logtalk. + +Other Prolog compilers require manual steps for integration with Logtalk. +See the "configs/NOTES.txt" file for details. + +The environment variables LOGTALKHOME and LOGTALKUSER should be defined +in order to run the integration scripts (see the "INSTALL.txt" file for +details on setting the variables). + +Note that the integration scripts and shortcuts may fail if you use non- +standard locations for your Prolog compilers. + +Depending on the size and complexity of your Logtalk applications, you +may need to change the integration scripts in order to allocate more +memory to the back-end Prolog compilers. Please consult the documentation +on the Prolog compilers you intend to use for details. + +All the scripts accept command-line options, which are passed straight to +the back-end Prolog compiler. For example (on a POSIX operating-system, +using SWI-Prolog as the back-end compiler): + + % swilgt -g "write('Hello world!'), nl" + +However, keep in mind that the integration scripts already use the back-end +Prolog command-line option that allows a initialization file to be loaded +in order to bootstrap Logtalk. See the scripts/shortcut files for details. diff --git a/Logtalk/integration/bplgt.sh b/Logtalk/integration/bplgt.sh new file mode 100755 index 000000000..468f40d1b --- /dev/null +++ b/Logtalk/integration/bplgt.sh @@ -0,0 +1,60 @@ +#/bin/sh + +## ================================================================ +## Logtalk - Open source object-oriented logic programming language +## Release 2.30.1 +## +## Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. +## ================================================================ + +if ! [ "$LOGTALKHOME" ]; then + echo "The environment variable LOGTALKHOME should be defined first, pointing" + echo "to your Logtalk installation directory!" + echo "Trying the default locations for the Logtalk installation..." + if [ -d "/usr/local/share/logtalk" ]; then + LOGTALKHOME=/usr/local/share/logtalk + echo "... using Logtalk installation found at /usr/local/share/logtalk" + elif [ -d "/usr/share/logtalk" ]; then + LOGTALKHOME=/usr/share/logtalk + echo "... using Logtalk installation found at /usr/share/logtalk" + elif [ -d "/opt/local/share/logtalk" ]; then + LOGTALKHOME=/opt/local/share/logtalk + echo "... using Logtalk installation found at /opt/local/share/logtalk" + elif [ -d "/opt/share/logtalk" ]; then + LOGTALKHOME=/opt/share/logtalk + echo "... using Logtalk installation found at /opt/share/logtalk" + else + echo "... unable to locate Logtalk installation directory!" + echo + exit 1 + fi + echo +elif ! [ -d "$LOGTALKHOME" ]; then + echo "The environment variable LOGTALKHOME points to a non-existing directory!" + echo "Its current value is: $LOGTALKHOME" + echo "The variable must be set to your Logtalk installation directory!" + echo + exit 1 +fi +export LOGTALKHOME + +if ! [ "$LOGTALKUSER" ]; then + echo "The environment variable LOGTALKUSER should be defined first, pointing" + echo "to your Logtalk user directory!" + echo "Trying the default location for the Logtalk user directory..." + export LOGTALKUSER=$HOME/logtalk + if [ -d "$LOGTALKUSER" ]; then + echo "... using Logtalk user directory found at $LOGTALKUSER" + else + echo "... Logtalk user directory not found at default location. Creating a" + echo "new Logtalk user directory by running the \"cplgtdirs\" shell script:" + cplgtdirs + fi +elif ! [ -d "$LOGTALKUSER" ]; then + echo "Cannot find \$LOGTALKUSER directory! Creating a new Logtalk user directory" + echo "by running the \"cplgtdirs\" shell script:" + cplgtdirs +fi +echo + +exec bp -g "consult('$LOGTALKHOME/integration/logtalk_bp.pl'), \$bp_top_level" "$@" diff --git a/Logtalk/integration/ciaolgt.sh b/Logtalk/integration/ciaolgt.sh new file mode 100755 index 000000000..5bcb442c0 --- /dev/null +++ b/Logtalk/integration/ciaolgt.sh @@ -0,0 +1,60 @@ +#/bin/sh + +## ================================================================ +## Logtalk - Open source object-oriented logic programming language +## Release 2.30.1 +## +## Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. +## ================================================================ + +if ! [ "$LOGTALKHOME" ]; then + echo "The environment variable LOGTALKHOME should be defined first, pointing" + echo "to your Logtalk installation directory!" + echo "Trying the default locations for the Logtalk installation..." + if [ -d "/usr/local/share/logtalk" ]; then + LOGTALKHOME=/usr/local/share/logtalk + echo "... using Logtalk installation found at /usr/local/share/logtalk" + elif [ -d "/usr/share/logtalk" ]; then + LOGTALKHOME=/usr/share/logtalk + echo "... using Logtalk installation found at /usr/share/logtalk" + elif [ -d "/opt/local/share/logtalk" ]; then + LOGTALKHOME=/opt/local/share/logtalk + echo "... using Logtalk installation found at /opt/local/share/logtalk" + elif [ -d "/opt/share/logtalk" ]; then + LOGTALKHOME=/opt/share/logtalk + echo "... using Logtalk installation found at /opt/share/logtalk" + else + echo "... unable to locate Logtalk installation directory!" + echo + exit 1 + fi + echo +elif ! [ -d "$LOGTALKHOME" ]; then + echo "The environment variable LOGTALKHOME points to a non-existing directory!" + echo "Its current value is: $LOGTALKHOME" + echo "The variable must be set to your Logtalk installation directory!" + echo + exit 1 +fi +export LOGTALKHOME + +if ! [ "$LOGTALKUSER" ]; then + echo "The environment variable LOGTALKUSER should be defined first, pointing" + echo "to your Logtalk user directory!" + echo "Trying the default location for the Logtalk user directory..." + export LOGTALKUSER=$HOME/logtalk + if [ -d "$LOGTALKUSER" ]; then + echo "... using Logtalk user directory found at $LOGTALKUSER" + else + echo "... Logtalk user directory not found at default location. Creating a" + echo "new Logtalk user directory by running the \"cplgtdirs\" shell script:" + cplgtdirs + fi +elif ! [ -d "$LOGTALKUSER" ]; then + echo "Cannot find \$LOGTALKUSER directory! Creating a new Logtalk user directory" + echo "by running the \"cplgtdirs\" shell script:" + cplgtdirs +fi +echo + +exec ciaosh -l "$LOGTALKHOME/integration/logtalk_ciao.pl" "$@" diff --git a/Logtalk/integration/cxlgt.sh b/Logtalk/integration/cxlgt.sh new file mode 100755 index 000000000..dc57dc74e --- /dev/null +++ b/Logtalk/integration/cxlgt.sh @@ -0,0 +1,61 @@ +#/bin/sh + +## ================================================================ +## Logtalk - Open source object-oriented logic programming language +## Release 2.30.1 +## +## Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. +## ================================================================ + +if ! [ "$LOGTALKHOME" ]; then + echo "The environment variable LOGTALKHOME should be defined first, pointing" + echo "to your Logtalk installation directory!" + echo "Trying the default locations for the Logtalk installation..." + if [ -d "/usr/local/share/logtalk" ]; then + LOGTALKHOME=/usr/local/share/logtalk + echo "... using Logtalk installation found at /usr/local/share/logtalk" + elif [ -d "/usr/share/logtalk" ]; then + LOGTALKHOME=/usr/share/logtalk + echo "... using Logtalk installation found at /usr/share/logtalk" + elif [ -d "/opt/local/share/logtalk" ]; then + LOGTALKHOME=/opt/local/share/logtalk + echo "... using Logtalk installation found at /opt/local/share/logtalk" + elif [ -d "/opt/share/logtalk" ]; then + LOGTALKHOME=/opt/share/logtalk + echo "... using Logtalk installation found at /opt/share/logtalk" + else + echo "... unable to locate Logtalk installation directory!" + echo + exit 1 + fi + echo +elif ! [ -d "$LOGTALKHOME" ]; then + echo "The environment variable LOGTALKHOME points to a non-existing directory!" + echo "Its current value is: $LOGTALKHOME" + echo "The variable must be set to your Logtalk installation directory!" + echo + exit 1 +fi + +export LOGTALKHOME + +if ! [ "$LOGTALKUSER" ]; then + echo "The environment variable LOGTALKUSER should be defined first, pointing" + echo "to your Logtalk user directory!" + echo "Trying the default location for the Logtalk user directory..." + export LOGTALKUSER=$HOME/logtalk + if [ -d "$LOGTALKUSER" ]; then + echo "... using Logtalk user directory found at $LOGTALKUSER" + else + echo "... Logtalk user directory not found at default location. Creating a" + echo "new Logtalk user directory by running the \"cplgtdirs\" shell script:" + cplgtdirs + fi +elif ! [ -d "$LOGTALKUSER" ]; then + echo "Cannot find \$LOGTALKUSER directory! Creating a new Logtalk user directory" + echo "by running the \"cplgtdirs\" shell script:" + cplgtdirs +fi +echo + +exec cxprolog --goal "silent_consult('$LOGTALKHOME/integration/logtalk_cx.pl')" "$@" diff --git a/Logtalk/integration/eclipselgt.sh b/Logtalk/integration/eclipselgt.sh new file mode 100755 index 000000000..b420fe263 --- /dev/null +++ b/Logtalk/integration/eclipselgt.sh @@ -0,0 +1,60 @@ +#/bin/sh + +## ================================================================ +## Logtalk - Open source object-oriented logic programming language +## Release 2.30.1 +## +## Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. +## ================================================================ + +if ! [ "$LOGTALKHOME" ]; then + echo "The environment variable LOGTALKHOME should be defined first, pointing" + echo "to your Logtalk installation directory!" + echo "Trying the default locations for the Logtalk installation..." + if [ -d "/usr/local/share/logtalk" ]; then + LOGTALKHOME=/usr/local/share/logtalk + echo "... using Logtalk installation found at /usr/local/share/logtalk" + elif [ -d "/usr/share/logtalk" ]; then + LOGTALKHOME=/usr/share/logtalk + echo "... using Logtalk installation found at /usr/share/logtalk" + elif [ -d "/opt/local/share/logtalk" ]; then + LOGTALKHOME=/opt/local/share/logtalk + echo "... using Logtalk installation found at /opt/local/share/logtalk" + elif [ -d "/opt/share/logtalk" ]; then + LOGTALKHOME=/opt/share/logtalk + echo "... using Logtalk installation found at /opt/share/logtalk" + else + echo "... unable to locate Logtalk installation directory!" + echo + exit 1 + fi + echo +elif ! [ -d "$LOGTALKHOME" ]; then + echo "The environment variable LOGTALKHOME points to a non-existing directory!" + echo "Its current value is: $LOGTALKHOME" + echo "The variable must be set to your Logtalk installation directory!" + echo + exit 1 +fi +export LOGTALKHOME + +if ! [ "$LOGTALKUSER" ]; then + echo "The environment variable LOGTALKUSER should be defined first, pointing" + echo "to your Logtalk user directory!" + echo "Trying the default location for the Logtalk user directory..." + export LOGTALKUSER=$HOME/logtalk + if [ -d "$LOGTALKUSER" ]; then + echo "... using Logtalk user directory found at $LOGTALKUSER" + else + echo "... Logtalk user directory not found at default location. Creating a" + echo "new Logtalk user directory by running the \"cplgtdirs\" shell script:" + cplgtdirs + fi +elif ! [ -d "$LOGTALKUSER" ]; then + echo "Cannot find \$LOGTALKUSER directory! Creating a new Logtalk user directory" + echo "by running the \"cplgtdirs\" shell script:" + cplgtdirs +fi +echo + +exec eclipse -b "$LOGTALKHOME/integration/logtalk_eclipse.pl" "$@" diff --git a/Logtalk/integration/gplgt.sh b/Logtalk/integration/gplgt.sh new file mode 100755 index 000000000..7a10a2876 --- /dev/null +++ b/Logtalk/integration/gplgt.sh @@ -0,0 +1,60 @@ +#/bin/sh + +## ================================================================ +## Logtalk - Open source object-oriented logic programming language +## Release 2.30.1 +## +## Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. +## ================================================================ + +if ! [ "$LOGTALKHOME" ]; then + echo "The environment variable LOGTALKHOME should be defined first, pointing" + echo "to your Logtalk installation directory!" + echo "Trying the default locations for the Logtalk installation..." + if [ -d "/usr/local/share/logtalk" ]; then + LOGTALKHOME=/usr/local/share/logtalk + echo "... using Logtalk installation found at /usr/local/share/logtalk" + elif [ -d "/usr/share/logtalk" ]; then + LOGTALKHOME=/usr/share/logtalk + echo "... using Logtalk installation found at /usr/share/logtalk" + elif [ -d "/opt/local/share/logtalk" ]; then + LOGTALKHOME=/opt/local/share/logtalk + echo "... using Logtalk installation found at /opt/local/share/logtalk" + elif [ -d "/opt/share/logtalk" ]; then + LOGTALKHOME=/opt/share/logtalk + echo "... using Logtalk installation found at /opt/share/logtalk" + else + echo "... unable to locate Logtalk installation directory!" + echo + exit 1 + fi + echo +elif ! [ -d "$LOGTALKHOME" ]; then + echo "The environment variable LOGTALKHOME points to a non-existing directory!" + echo "Its current value is: $LOGTALKHOME" + echo "The variable must be set to your Logtalk installation directory!" + echo + exit 1 +fi +export LOGTALKHOME + +if ! [ "$LOGTALKUSER" ]; then + echo "The environment variable LOGTALKUSER should be defined first, pointing" + echo "to your Logtalk user directory!" + echo "Trying the default location for the Logtalk user directory..." + export LOGTALKUSER=$HOME/logtalk + if [ -d "$LOGTALKUSER" ]; then + echo "... using Logtalk user directory found at $LOGTALKUSER" + else + echo "... Logtalk user directory not found at default location. Creating a" + echo "new Logtalk user directory by running the \"cplgtdirs\" shell script:" + cplgtdirs + fi +elif ! [ -d "$LOGTALKUSER" ]; then + echo "Cannot find \$LOGTALKUSER directory! Creating a new Logtalk user directory" + echo "by running the \"cplgtdirs\" shell script:" + cplgtdirs +fi +echo + +exec gprolog --init-goal "['$LOGTALKUSER/configs/gnu.config','$LOGTALKHOME/integration/logtalk_gp.pl','$LOGTALKUSER/libpaths/libpaths.pl']" "$@" diff --git a/Logtalk/integration/logtalk_bp.pl b/Logtalk/integration/logtalk_bp.pl new file mode 100644 index 000000000..4744f1b27 --- /dev/null +++ b/Logtalk/integration/logtalk_bp.pl @@ -0,0 +1,15 @@ + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +% +% Logtalk - Open source object-oriented logic programming language +% Release 2.30.1 +% +% Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. +% +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + + +:- set_prolog_flag(redefined, off). +:- cl('$LOGTALKUSER/configs/b.config'). +:- cl('$LOGTALKHOME/compiler/logtalk.pl'). +:- cl('$LOGTALKUSER/libpaths/libpaths.pl'). diff --git a/Logtalk/integration/logtalk_bp_win.pl b/Logtalk/integration/logtalk_bp_win.pl new file mode 100644 index 000000000..c9ba58516 --- /dev/null +++ b/Logtalk/integration/logtalk_bp_win.pl @@ -0,0 +1,17 @@ + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +% +% Logtalk - Open source object-oriented logic programming language +% Release 2.30.1 +% +% Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. +% +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + + +:- set_prolog_flag(redefined, off). +:- cl('$LOGTALKUSER/configs/b.config'). +%:- system('del %LOGTALKUSER%\\configs\\b.config.out'). +:- (expand_environment('$LOGTALKHOME/compiler/logtalk.pl.out', Expanded), exists(Expanded) -> load('$LOGTALKHOME/compiler/logtalk.pl'); cl('$LOGTALKHOME/compiler/logtalk.pl')). +:- cl('$LOGTALKUSER/libpaths/libpaths.pl'). +%:- system('del %LOGTALKUSER%\\libpaths\\libpaths.pl.out'). diff --git a/Logtalk/integration/logtalk_ciao.pl b/Logtalk/integration/logtalk_ciao.pl new file mode 100644 index 000000000..357db9473 --- /dev/null +++ b/Logtalk/integration/logtalk_ciao.pl @@ -0,0 +1,22 @@ + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +% +% Logtalk - Open source object-oriented logic programming language +% Release 2.30.1 +% +% Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. +% +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + + +:- ensure_loaded('$LOGTALKUSER/configs/ciao_aux.config'). +:- set_prolog_flag(multi_arity_warnings, off). +:- ensure_loaded('$LOGTALKHOME/compiler/logtalk.pl'). +:- ensure_loaded('$LOGTALKUSER/libpaths/libpaths.pl'). +:- op(600, xfy, ::). +:- op(600, fy, ::). +:- op(600, fy, ^^). +:- op(200, fy, +). +:- op(200, fy, ?). +:- op(200, fy, @). +:- op(200, fy, -). diff --git a/Logtalk/integration/logtalk_comp_eclipse.pl b/Logtalk/integration/logtalk_comp_eclipse.pl new file mode 100644 index 000000000..9ab1ef570 --- /dev/null +++ b/Logtalk/integration/logtalk_comp_eclipse.pl @@ -0,0 +1,15 @@ + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +% +% Logtalk - Open source object-oriented logic programming language +% Release 2.30.1 +% +% Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. +% +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + + +:- pragma(system). +:- pragma(nodebug). +:- ensure_loaded(library(toplevel)). +:- include('$LOGTALKHOME/compiler/logtalk.pl'). diff --git a/Logtalk/integration/logtalk_comp_swi.pl b/Logtalk/integration/logtalk_comp_swi.pl new file mode 100644 index 000000000..31938ca4a --- /dev/null +++ b/Logtalk/integration/logtalk_comp_swi.pl @@ -0,0 +1,22 @@ + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +% +% Logtalk - Open source object-oriented logic programming language +% Release 2.30.1 +% +% Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. +% +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + + +:- set_prolog_flag(iso, true). +:- set_prolog_flag(generate_debug_info, false). +:- system_module. +:- op(600, xfy, ::). +:- op(600, fy, ::). +:- op(600, fy, ^^). +:- op(200, fy, +). +:- op(200, fy, ?). +:- op(200, fy, @). +:- op(200, fy, -). +:- include('../compiler/logtalk.pl'). diff --git a/Logtalk/integration/logtalk_cx.pl b/Logtalk/integration/logtalk_cx.pl new file mode 100644 index 000000000..7efb8a4c2 --- /dev/null +++ b/Logtalk/integration/logtalk_cx.pl @@ -0,0 +1,15 @@ + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +% +% Logtalk - Open source object-oriented logic programming language +% Release 2.30.1 +% +% Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. +% +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + + +:- set_prolog_flag(file_name_variables, true). +:- silent_consult('$LOGTALKUSER/configs/cx.config'). +:- silent_consult('$LOGTALKHOME/compiler/logtalk.pl'). +:- silent_consult('$LOGTALKUSER/libpaths/libpaths.pl'). diff --git a/Logtalk/integration/logtalk_eclipse.pl b/Logtalk/integration/logtalk_eclipse.pl new file mode 100644 index 000000000..e4b242fa5 --- /dev/null +++ b/Logtalk/integration/logtalk_eclipse.pl @@ -0,0 +1,14 @@ + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +% +% Logtalk - Open source object-oriented logic programming language +% Release 2.30.1 +% +% Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. +% +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + + +:- compile('$LOGTALKUSER/configs/eclipseiso.config'). +:- compile('$LOGTALKHOME/integration/logtalk_comp_eclipse.pl'). +:- compile('$LOGTALKUSER/libpaths/libpaths.pl'). diff --git a/Logtalk/integration/logtalk_gp.pl b/Logtalk/integration/logtalk_gp.pl new file mode 100644 index 000000000..2b9535d0a --- /dev/null +++ b/Logtalk/integration/logtalk_gp.pl @@ -0,0 +1,13 @@ + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +% +% Logtalk - Open source object-oriented logic programming language +% Release 2.30.1 +% +% Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. +% +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + + +:- built_in. +:- include('$LOGTALKHOME/compiler/logtalk.pl'). diff --git a/Logtalk/integration/logtalk_plc.pl b/Logtalk/integration/logtalk_plc.pl new file mode 100644 index 000000000..1c077e3b6 --- /dev/null +++ b/Logtalk/integration/logtalk_plc.pl @@ -0,0 +1,14 @@ + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +% +% Logtalk - Open source object-oriented logic programming language +% Release 2.30.1 +% +% Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. +% +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + + +:- consult('$LOGTALKUSER/configs/k.config'). +:- consult('$LOGTALKHOME/compiler/logtalk.pl'). +:- consult('$LOGTALKUSER/libpaths/libpaths.pl'). diff --git a/Logtalk/integration/logtalk_sicstus3.pl b/Logtalk/integration/logtalk_sicstus3.pl new file mode 100644 index 000000000..246d8e6f2 --- /dev/null +++ b/Logtalk/integration/logtalk_sicstus3.pl @@ -0,0 +1,14 @@ + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +% +% Logtalk - Open source object-oriented logic programming language +% Release 2.30.1 +% +% Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. +% +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + + +:- compile('$LOGTALKUSER/configs/sicstus.config'). +:- compile('$LOGTALKHOME/compiler/logtalk.pl'). +:- compile('$LOGTALKUSER/libpaths/libpaths.pl'). diff --git a/Logtalk/integration/logtalk_sicstus4.pl b/Logtalk/integration/logtalk_sicstus4.pl new file mode 100644 index 000000000..86f33d7fb --- /dev/null +++ b/Logtalk/integration/logtalk_sicstus4.pl @@ -0,0 +1,22 @@ + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +% +% Logtalk - Open source object-oriented logic programming language +% Release 2.30.1 +% +% Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. +% +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + + +:- compile('$LOGTALKUSER/configs/sicstus4.config'). +:- asserta(( + user:goal_expansion(CallWitArgs, Layout, _, Call, Layout) :- + CallWitArgs =.. [call_with_args| Args], + Call =.. [call| Args])). +:- compile('$LOGTALKHOME/compiler/logtalk.pl'). +:- retract(( + user:goal_expansion(CallWitArgs, Layout, _, Call, Layout) :- + CallWitArgs =.. [call_with_args| Args], + Call =.. [call| Args])). +:- compile('$LOGTALKUSER/libpaths/libpaths.pl'). diff --git a/Logtalk/integration/logtalk_swi.pl b/Logtalk/integration/logtalk_swi.pl new file mode 100644 index 000000000..5072e7fbb --- /dev/null +++ b/Logtalk/integration/logtalk_swi.pl @@ -0,0 +1,16 @@ + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +% +% Logtalk - Open source object-oriented logic programming language +% Release 2.30.1 +% +% Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. +% +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + + +:- consult('$LOGTALKUSER/configs/swi.config'). +:- consult('$LOGTALKHOME/integration/logtalk_comp_swi.pl'). +:- consult('$LOGTALKUSER/libpaths/libpaths.pl'). +:- consult('$LOGTALKUSER/configs/swihook.pl'). +:- consult('$LOGTALKUSER/configs/xpcehook.pl'). diff --git a/Logtalk/integration/logtalk_xsb.pl b/Logtalk/integration/logtalk_xsb.pl new file mode 100644 index 000000000..f000f217b --- /dev/null +++ b/Logtalk/integration/logtalk_xsb.pl @@ -0,0 +1,15 @@ + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +% +% Logtalk - Open source object-oriented logic programming language +% Release 2.30.1 +% +% Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. +% +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + + +:- reconsult('$LOGTALKUSER/configs/xsb.pl'). +:- reconsult('$LOGTALKHOME/compiler/logtalk.pl'). +:- reconsult('$LOGTALKUSER/libpaths/libpaths_no_env_var.pl'). +:- path_sysop(chdir, '~'). diff --git a/Logtalk/integration/logtalk_yap.pl b/Logtalk/integration/logtalk_yap.pl new file mode 100644 index 000000000..df90bfe6c --- /dev/null +++ b/Logtalk/integration/logtalk_yap.pl @@ -0,0 +1,14 @@ + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +% +% Logtalk - Open source object-oriented logic programming language +% Release 2.30.1 +% +% Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. +% +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + + +:- reconsult('$LOGTALKUSER/configs/yap.config'). +:- reconsult('$LOGTALKHOME/compiler/logtalk.pl'). +:- reconsult('$LOGTALKUSER/libpaths/libpaths.pl'). diff --git a/Logtalk/integration/plclgt.sh b/Logtalk/integration/plclgt.sh new file mode 100755 index 000000000..66a76d3b5 --- /dev/null +++ b/Logtalk/integration/plclgt.sh @@ -0,0 +1,60 @@ +#/bin/sh + +## ================================================================ +## Logtalk - Open source object-oriented logic programming language +## Release 2.30.1 +## +## Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. +## ================================================================ + +if ! [ "$LOGTALKHOME" ]; then + echo "The environment variable LOGTALKHOME should be defined first, pointing" + echo "to your Logtalk installation directory!" + echo "Trying the default locations for the Logtalk installation..." + if [ -d "/usr/local/share/logtalk" ]; then + LOGTALKHOME=/usr/local/share/logtalk + echo "... using Logtalk installation found at /usr/local/share/logtalk" + elif [ -d "/usr/share/logtalk" ]; then + LOGTALKHOME=/usr/share/logtalk + echo "... using Logtalk installation found at /usr/share/logtalk" + elif [ -d "/opt/local/share/logtalk" ]; then + LOGTALKHOME=/opt/local/share/logtalk + echo "... using Logtalk installation found at /opt/local/share/logtalk" + elif [ -d "/opt/share/logtalk" ]; then + LOGTALKHOME=/opt/share/logtalk + echo "... using Logtalk installation found at /opt/share/logtalk" + else + echo "... unable to locate Logtalk installation directory!" + echo + exit 1 + fi + echo +elif ! [ -d "$LOGTALKHOME" ]; then + echo "The environment variable LOGTALKHOME points to a non-existing directory!" + echo "Its current value is: $LOGTALKHOME" + echo "The variable must be set to your Logtalk installation directory!" + echo + exit 1 +fi +export LOGTALKHOME + +if ! [ "$LOGTALKUSER" ]; then + echo "The environment variable LOGTALKUSER should be defined first, pointing" + echo "to your Logtalk user directory!" + echo "Trying the default location for the Logtalk user directory..." + export LOGTALKUSER=$HOME/logtalk + if [ -d "$LOGTALKUSER" ]; then + echo "... using Logtalk user directory found at $LOGTALKUSER" + else + echo "... Logtalk user directory not found at default location. Creating a" + echo "new Logtalk user directory by running the \"cplgtdirs\" shell script:" + cplgtdirs + fi +elif ! [ -d "$LOGTALKUSER" ]; then + echo "Cannot find \$LOGTALKUSER directory! Creating a new Logtalk user directory" + echo "by running the \"cplgtdirs\" shell script:" + cplgtdirs +fi +echo + +exec "$PLC"/plc -h 2048k -l 1024k -g 2048k -e "(consult('$LOGTALKHOME/integration/logtalk_plc.pl'), '\$root')." "$@" diff --git a/Logtalk/integration/sicstuslgt.sh b/Logtalk/integration/sicstuslgt.sh new file mode 100755 index 000000000..eff768b69 --- /dev/null +++ b/Logtalk/integration/sicstuslgt.sh @@ -0,0 +1,64 @@ +#/bin/sh + +## ================================================================ +## Logtalk - Open source object-oriented logic programming language +## Release 2.30.1 +## +## Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. +## ================================================================ + +if ! [ "$LOGTALKHOME" ]; then + echo "The environment variable LOGTALKHOME should be defined first, pointing" + echo "to your Logtalk installation directory!" + echo "Trying the default locations for the Logtalk installation..." + if [ -d "/usr/local/share/logtalk" ]; then + LOGTALKHOME=/usr/local/share/logtalk + echo "... using Logtalk installation found at /usr/local/share/logtalk" + elif [ -d "/usr/share/logtalk" ]; then + LOGTALKHOME=/usr/share/logtalk + echo "... using Logtalk installation found at /usr/share/logtalk" + elif [ -d "/opt/local/share/logtalk" ]; then + LOGTALKHOME=/opt/local/share/logtalk + echo "... using Logtalk installation found at /opt/local/share/logtalk" + elif [ -d "/opt/share/logtalk" ]; then + LOGTALKHOME=/opt/share/logtalk + echo "... using Logtalk installation found at /opt/share/logtalk" + else + echo "... unable to locate Logtalk installation directory!" + echo + exit 1 + fi + echo +elif ! [ -d "$LOGTALKHOME" ]; then + echo "The environment variable LOGTALKHOME points to a non-existing directory!" + echo "Its current value is: $LOGTALKHOME" + echo "The variable must be set to your Logtalk installation directory!" + echo + exit 1 +fi +export LOGTALKHOME + +if ! [ "$LOGTALKUSER" ]; then + echo "The environment variable LOGTALKUSER should be defined first, pointing" + echo "to your Logtalk user directory!" + echo "Trying the default location for the Logtalk user directory..." + export LOGTALKUSER=$HOME/logtalk + if [ -d "$LOGTALKUSER" ]; then + echo "... using Logtalk user directory found at $LOGTALKUSER" + else + echo "... Logtalk user directory not found at default location. Creating a" + echo "new Logtalk user directory by running the \"cplgtdirs\" shell script:" + cplgtdirs + fi +elif ! [ -d "$LOGTALKUSER" ]; then + echo "Cannot find \$LOGTALKUSER directory! Creating a new Logtalk user directory" + echo "by running the \"cplgtdirs\" shell script:" + cplgtdirs +fi +echo + +if sicstus -f --goal "halt." 2>&1 | grep "SICStus 4" 2>&1 >/dev/null; then + exec sicstus -l "$LOGTALKHOME/integration/logtalk_sicstus4.pl" "$@" +else + exec sicstus -l "$LOGTALKHOME/integration/logtalk_sicstus3.pl" "$@" +fi diff --git a/Logtalk/integration/swilgt.sh b/Logtalk/integration/swilgt.sh new file mode 100755 index 000000000..7fbaa00ef --- /dev/null +++ b/Logtalk/integration/swilgt.sh @@ -0,0 +1,68 @@ +#/bin/sh + +## ================================================================ +## Logtalk - Open source object-oriented logic programming language +## Release 2.30.1 +## +## Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. +## ================================================================ + +if ! [ "$LOGTALKHOME" ]; then + echo "The environment variable LOGTALKHOME should be defined first, pointing" + echo "to your Logtalk installation directory!" + echo "Trying the default locations for the Logtalk installation..." + if [ -d "/usr/local/share/logtalk" ]; then + LOGTALKHOME=/usr/local/share/logtalk + echo "... using Logtalk installation found at /usr/local/share/logtalk" + elif [ -d "/usr/share/logtalk" ]; then + LOGTALKHOME=/usr/share/logtalk + echo "... using Logtalk installation found at /usr/share/logtalk" + elif [ -d "/opt/local/share/logtalk" ]; then + LOGTALKHOME=/opt/local/share/logtalk + echo "... using Logtalk installation found at /opt/local/share/logtalk" + elif [ -d "/opt/share/logtalk" ]; then + LOGTALKHOME=/opt/share/logtalk + echo "... using Logtalk installation found at /opt/share/logtalk" + else + echo "... unable to locate Logtalk installation directory!" + echo + exit 1 + fi + echo +elif ! [ -d "$LOGTALKHOME" ]; then + echo "The environment variable LOGTALKHOME points to a non-existing directory!" + echo "Its current value is: $LOGTALKHOME" + echo "The variable must be set to your Logtalk installation directory!" + echo + exit 1 +fi +export LOGTALKHOME + +if ! [ "$LOGTALKUSER" ]; then + echo "The environment variable LOGTALKUSER should be defined first, pointing" + echo "to your Logtalk user directory!" + echo "Trying the default location for the Logtalk user directory..." + export LOGTALKUSER=$HOME/logtalk + if [ -d "$LOGTALKUSER" ]; then + echo "... using Logtalk user directory found at $LOGTALKUSER" + else + echo "... Logtalk user directory not found at default location. Creating a" + echo "new Logtalk user directory by running the \"cplgtdirs\" shell script:" + cplgtdirs + fi +elif ! [ -d "$LOGTALKUSER" ]; then + echo "Cannot find \$LOGTALKUSER directory! Creating a new Logtalk user directory" + echo "by running the \"cplgtdirs\" shell script:" + cplgtdirs +fi +echo + +if pl -t halt 2>&1 | grep "SWI-Prolog"; then + exec pl -f "$LOGTALKHOME/integration/logtalk_swi.pl" "$@" +elif swipl -t halt 2>&1 | grep "SWI-Prolog"; then + exec swipl -f "$LOGTALKHOME/integration/logtalk_swi.pl" "$@" +else case $( uname -s ) in + Darwin ) exec swipl -f "$LOGTALKHOME/integration/logtalk_swi.pl" "$@";; + * ) exec pl -f "$LOGTALKHOME/integration/logtalk_swi.pl" "$@";; +esac +fi diff --git a/Logtalk/integration/xsblgt.sh b/Logtalk/integration/xsblgt.sh new file mode 100755 index 000000000..665a6c98c --- /dev/null +++ b/Logtalk/integration/xsblgt.sh @@ -0,0 +1,64 @@ +#/bin/sh + +## ================================================================ +## Logtalk - Open source object-oriented logic programming language +## Release 2.30.1 +## +## Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. +## ================================================================ + +if ! [ "$LOGTALKHOME" ]; then + echo "The environment variable LOGTALKHOME should be defined first, pointing" + echo "to your Logtalk installation directory!" + echo "Trying the default locations for the Logtalk installation..." + if [ -d "/usr/local/share/logtalk" ]; then + LOGTALKHOME=/usr/local/share/logtalk + echo "... using Logtalk installation found at /usr/local/share/logtalk" + elif [ -d "/usr/share/logtalk" ]; then + LOGTALKHOME=/usr/share/logtalk + echo "... using Logtalk installation found at /usr/share/logtalk" + elif [ -d "/opt/local/share/logtalk" ]; then + LOGTALKHOME=/opt/local/share/logtalk + echo "... using Logtalk installation found at /opt/local/share/logtalk" + elif [ -d "/opt/share/logtalk" ]; then + LOGTALKHOME=/opt/share/logtalk + echo "... using Logtalk installation found at /opt/share/logtalk" + else + echo "... unable to locate Logtalk installation directory!" + echo + exit 1 + fi + echo +elif ! [ -d "$LOGTALKHOME" ]; then + echo "The environment variable LOGTALKHOME points to a non-existing directory!" + echo "Its current value is: $LOGTALKHOME" + echo "The variable must be set to your Logtalk installation directory!" + echo + exit 1 +fi +export LOGTALKHOME + +if ! [ "$LOGTALKUSER" ]; then + echo "The environment variable LOGTALKUSER should be defined first, pointing" + echo "to your Logtalk user directory!" + echo "Trying the default location for the Logtalk user directory..." + export LOGTALKUSER=$HOME/logtalk + if [ -d "$LOGTALKUSER" ]; then + echo "... using Logtalk user directory found at $LOGTALKUSER" + else + echo "... Logtalk user directory not found at default location. Creating a" + echo "new Logtalk user directory by running the \"cplgtdirs\" shell script:" + cplgtdirs + fi +elif ! [ -d "$LOGTALKUSER" ]; then + echo "Cannot find \$LOGTALKUSER directory! Creating a new Logtalk user directory" + echo "by running the \"cplgtdirs\" shell script:" + cplgtdirs +fi +echo + +if xsb -v 2>&1 | grep "CVS" 2>&1 >/dev/null; then + exec xsb -l -e "['$LOGTALKUSER/configs/xsbcvs.pl', '$LOGTALKHOME/compiler/logtalk.pl', '$LOGTALKUSER/libpaths/libpaths.pl']." "$@" +else + exec xsb -l -e "['$LOGTALKUSER/configs/xsb.pl', '$LOGTALKHOME/compiler/logtalk.pl', '$LOGTALKUSER/libpaths/libpaths_no_env_var.pl']." "$@" +fi diff --git a/Logtalk/integration/yaplgt.sh b/Logtalk/integration/yaplgt.sh new file mode 100755 index 000000000..f9f790273 --- /dev/null +++ b/Logtalk/integration/yaplgt.sh @@ -0,0 +1,60 @@ +#/bin/sh + +## ================================================================ +## Logtalk - Open source object-oriented logic programming language +## Release 2.30.1 +## +## Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. +## ================================================================ + +if ! [ "$LOGTALKHOME" ]; then + echo "The environment variable LOGTALKHOME should be defined first, pointing" + echo "to your Logtalk installation directory!" + echo "Trying the default locations for the Logtalk installation..." + if [ -d "/usr/local/share/logtalk" ]; then + LOGTALKHOME=/usr/local/share/logtalk + echo "... using Logtalk installation found at /usr/local/share/logtalk" + elif [ -d "/usr/share/logtalk" ]; then + LOGTALKHOME=/usr/share/logtalk + echo "... using Logtalk installation found at /usr/share/logtalk" + elif [ -d "/opt/local/share/logtalk" ]; then + LOGTALKHOME=/opt/local/share/logtalk + echo "... using Logtalk installation found at /opt/local/share/logtalk" + elif [ -d "/opt/share/logtalk" ]; then + LOGTALKHOME=/opt/share/logtalk + echo "... using Logtalk installation found at /opt/share/logtalk" + else + echo "... unable to locate Logtalk installation directory!" + echo + exit 1 + fi + echo +elif ! [ -d "$LOGTALKHOME" ]; then + echo "The environment variable LOGTALKHOME points to a non-existing directory!" + echo "Its current value is: $LOGTALKHOME" + echo "The variable must be set to your Logtalk installation directory!" + echo + exit 1 +fi +export LOGTALKHOME + +if ! [ "$LOGTALKUSER" ]; then + echo "The environment variable LOGTALKUSER should be defined first, pointing" + echo "to your Logtalk user directory!" + echo "Trying the default location for the Logtalk user directory..." + export LOGTALKUSER=$HOME/logtalk + if [ -d "$LOGTALKUSER" ]; then + echo "... using Logtalk user directory found at $LOGTALKUSER" + else + echo "... Logtalk user directory not found at default location. Creating a" + echo "new Logtalk user directory by running the \"cplgtdirs\" shell script:" + cplgtdirs + fi +elif ! [ -d "$LOGTALKUSER" ]; then + echo "Cannot find \$LOGTALKUSER directory! Creating a new Logtalk user directory" + echo "by running the \"cplgtdirs\" shell script:" + cplgtdirs +fi +echo + +exec yap -s 49152 -h 16384 -t 1024 -l "$LOGTALKHOME/integration/logtalk_yap.pl" "$@" diff --git a/Logtalk/libpaths/NOTES.txt b/Logtalk/libpaths/NOTES.txt index bfaf497b7..f4776751f 100644 --- a/Logtalk/libpaths/NOTES.txt +++ b/Logtalk/libpaths/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ This folder contains a Prolog file, "libpaths.pl", which, when loaded, defines the library paths for the Logtalk standard library and for all @@ -23,15 +23,15 @@ As defined, the provided "libpaths.pl" file is already compatible with some of the most popular Prolog compilers, running on both MacOS X, Linux, Windows, Unix, and Unix-like operating-systems. -The Prolog integration scripts found on the "scripts" directory generate -scripts and shortcuts that automatically load the copy of the "libpaths.pl" -file from the Logtalk end-user directory created by the "scripts/cplgtdirs.*" -scripts. See the "INSTALL.txt" and "scripts/NOTES.txt" files for more details. -Note that some Prolog compilers do not support the () -notation. See the "configs/NOTES.txt" file for details. +The Prolog integration scripts, found on the "integration" directory, +automatically load the copy of the "libpaths.pl" file from the Logtalk +end-user directory created by the "scripts/cplgtdirs.*" scripts. See the +"INSTALL.txt" and "scripts/NOTES.txt" files for more details. Note that +some Prolog compilers do not support the () notation. +See the "configs/NOTES.txt" file for details. -The somehow contrived code found on the "libpaths.pl" file is needed -to ensure compatibility with both the ISO Prolog standard and with most +The somehow contrived code found on the "libpaths.pl" file is needed to +ensure compatibility with both the ISO Prolog standard and with most Prolog compilers. The code could be greatly simplified by using a multifile predicate directive for the library path dynamic predicate. Unfortunately, not all Prolog compilers support multifile predicates. @@ -41,6 +41,7 @@ Prolog compilers that are expected to be compatible with the provided * B-Prolog * CIAO + * CxProlog * ECLiPSe * GNU-Prolog * K-Prolog diff --git a/Logtalk/libpaths/libpaths.pl b/Logtalk/libpaths/libpaths.pl index 0475ee8a5..9c2bc7536 100644 --- a/Logtalk/libpaths/libpaths.pl +++ b/Logtalk/libpaths/libpaths.pl @@ -1,8 +1,8 @@ %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % -% Logtalk - Object oriented extension to Prolog -% Release 2.29.5 +% Logtalk - Open source object-oriented logic programming language +% Release 2.30.1 % % Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. % @@ -46,7 +46,6 @@ assertz(logtalk_library_path(miscellaneous, examples('miscellaneous/'))), assertz(logtalk_library_path(modules, examples('modules/'))), assertz(logtalk_library_path(msglog, examples('msglog/'))), - assertz(logtalk_library_path(msort, threads('msort/'))), assertz(logtalk_library_path(nondet, threads('nondet/'))), assertz(logtalk_library_path(operators, examples('operators/'))), assertz(logtalk_library_path(parametric, examples('parametric/'))), @@ -65,7 +64,9 @@ assertz(logtalk_library_path(shapes_ch, examples('shapes/ch/'))), assertz(logtalk_library_path(shapes_ph, examples('shapes/ph/'))), assertz(logtalk_library_path(sicstus, examples('sicstus/'))), + assertz(logtalk_library_path(sorting, threads('sorting/'))), assertz(logtalk_library_path(sync, threads('sync/'))), assertz(logtalk_library_path(symdiff, examples('symdiff/'))), + assertz(logtalk_library_path(tabling, examples('tabling/'))), assertz(logtalk_library_path(threads, examples('threads/'))), assertz(logtalk_library_path(viewpoints, examples('viewpoints/'))))). diff --git a/Logtalk/library/NOTES.txt b/Logtalk/library/NOTES.txt index 1558f633b..ebb62c71b 100644 --- a/Logtalk/library/NOTES.txt +++ b/Logtalk/library/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ This folder contains some useful objects, categories, and protocols. diff --git a/Logtalk/library/SCRIPT.txt b/Logtalk/library/SCRIPT.txt index 8bdf08ade..389fb2c72 100644 --- a/Logtalk/library/SCRIPT.txt +++ b/Logtalk/library/SCRIPT.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ | ?- meta::succeeds(integer, [1, 2, 3]). diff --git a/Logtalk/library/after_event_registry.lgt b/Logtalk/library/after_event_registry.lgt index a0e456ddb..09bc6cada 100644 --- a/Logtalk/library/after_event_registry.lgt +++ b/Logtalk/library/after_event_registry.lgt @@ -2,38 +2,30 @@ :- object(after_event_registry, implements(event_registryp)). - :- info([ version is 1.0, author is 'Paulo Moura', date is 2000/7/24, comment is 'After events registry predicates.']). - monitors(Monitors) :- findall(Monitor, current_event(after, _, _, _, Monitor), List), {sort(List, Monitors)}. - monitored(Objects) :- findall(Object, current_event(after, Object, _, _, _), List), {sort(List, Objects)}. - monitor(Object, Message, Sender, Monitor) :- current_event(after, Object, Message, Sender, Monitor). - set_monitor(Object, Message, Sender, Monitor) :- define_events(after, Object, Message, Sender, Monitor). - del_monitors(Object, Message, Sender, Monitor) :- abolish_events(after, Object, Message, Sender, Monitor). - del_monitors :- abolish_events(after, _, _, _, _). - :- end_object. diff --git a/Logtalk/library/all.notes b/Logtalk/library/all.notes index 173577c84..543f780b4 100644 --- a/Logtalk/library/all.notes +++ b/Logtalk/library/all.notes @@ -1,10 +1,10 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ The all_loader.lgt file will load all the entities loaded by the other diff --git a/Logtalk/library/assignvars.lgt b/Logtalk/library/assignvars.lgt index 3f2dc0e74..d6f661d21 100644 --- a/Logtalk/library/assignvars.lgt +++ b/Logtalk/library/assignvars.lgt @@ -15,14 +15,12 @@ version 2.1 (http://opensource.org/licenses/osl-2.1.php). :- category(assignvars). - :- info([ version is 1.0, author is 'Nobukuni Kino and Paulo Moura', date is 2005/1/7, comment is 'Assignable variables (supporting logical, backtracable assignement of non-variable terms).']). - :- public(assignable/1). :- mode(assignable(-assignvar), one). :- info(assignable/1, [ @@ -56,35 +54,28 @@ version 2.1 (http://opensource.org/licenses/osl-2.1.php). exceptions is [ 'Variable is not instantiated' - instantiation_error]]). - :-op(100, xfx, <=). :-op(100, xfx, =>). - assignable(Assig) :- nonvar(Assig), self(Self), sender(Sender), throw(error(type_error(variable, Assig), Self::assignable(Assig), Sender)). - assignable([_| _]). - assignable(Assig, Init) :- nonvar(Assig), self(Self), sender(Sender), throw(error(type_error(variable, Assig), Self::assignable(Assig, Init), Sender)). - assignable(Assig, Init) :- var(Init), self(Self), sender(Sender), throw(error(instantiation_error, Self::assignable(Assig, Init), Sender)). - assignable([_, Init| _], Init). - Assig <= Value :- var(Value), self(Self), @@ -97,7 +88,6 @@ version 2.1 (http://opensource.org/licenses/osl-2.1.php). ; Tail = [Value| _]. - Assig => Value :- var(Assig), self(Self), @@ -110,5 +100,4 @@ version 2.1 (http://opensource.org/licenses/osl-2.1.php). ; Current = Value. - :- end_category. diff --git a/Logtalk/library/atom.lgt b/Logtalk/library/atom.lgt index c6a10b076..6526fb4f7 100644 --- a/Logtalk/library/atom.lgt +++ b/Logtalk/library/atom.lgt @@ -2,16 +2,13 @@ :- object(atom, extends(atomic)). - :- info([ version is 1.0, author is 'Paulo Moura', date is 2000/7/24, comment is 'Atom data type predicates.']). - valid(Atom) :- atom(Atom). - :- end_object. diff --git a/Logtalk/library/atomic.lgt b/Logtalk/library/atomic.lgt index 64db015a6..25a77811f 100644 --- a/Logtalk/library/atomic.lgt +++ b/Logtalk/library/atomic.lgt @@ -2,16 +2,13 @@ :- object(atomic, extends(term)). - :- info([ version is 1.0, author is 'Paulo Moura', date is 2000/7/24, comment is 'Atomic data type predicates.']). - valid(Atomic) :- atomic(Atomic). - :- end_object. diff --git a/Logtalk/library/attributes.lgt b/Logtalk/library/attributes.lgt index f65f83af7..d935feb5b 100644 --- a/Logtalk/library/attributes.lgt +++ b/Logtalk/library/attributes.lgt @@ -1,105 +1,75 @@ :- category(attributes). - :- info([ version is 1.0, author is 'Paulo Moura', date is 2000/7/24, comment is 'Dynamic attributes dictionary.']). - :- public(attribute/2). - :- mode(attribute(?nonvar, ?nonvar), zero_or_more). - :- info(attribute/2, [comment is 'Returns, by backtracking, all pairs of atribute-values.', argnames is ['Attribute', 'Value']]). - :- public(attributes/1). - :- mode(attributes(-list), one). - :- info(attributes/1, [comment is 'List of all pairs of atribute-values.', argnames is ['Attributes']]). - :- private(attribute_/2). :- dynamic(attribute_/2). - :- mode(attribute_(?nonvar, ?nonvar), zero_or_more). - :- info(attribute_/2, [comment is 'Stores attributes values.', argnames is ['Attribute', 'Value']]). - :- public(del_attribute/2). - :- mode(del_attribute(?nonvar, ?nonvar), zero_or_more). - :- info(del_attribute/2, [comment is 'Deletes a matching attribute-value pair.', argnames is ['Attribute', 'Value']]). - :- public(del_attributes/2). - :- mode(del_attributes(@term, @term), one). - :- info(del_attributes/2, [comment is 'Deletes all matching attribute-value pairs.', argnames is ['Attribute', 'Value']]). - :- public(set_attribute/2). - :- mode(set_attribute(+nonvar, +nonvar), one). - :- info(set_attribute/2, [comment is 'Sets an attribute value.', argnames is ['Attribute', 'Value']]). - :- public(set_attributes/1). - :- mode(set_attributes(+list), one). - :- info(set_attributes/1, [comment is 'Sets a list of attribute-value pairs.', argnames is ['Attributes']]). - attribute(Attribute, Value) :- ::attribute_(Attribute, Value). - attributes(Attributes) :- findall(Attribute, ::attribute_(Attribute, _), Attributes). - del_attribute(Attribute, Value) :- ::retract(attribute_(Attribute, Value)). - del_attributes(Attribute, Value) :- ::retractall(attribute_(Attribute, Value)). - set_attribute(Attribute, Value) :- ::retractall(attribute_(Attribute, _)), ::assertz(attribute_(Attribute, Value)). - set_attributes([]). - set_attributes([Attribute-Value| Attributes]) :- ::retractall(attribute_(Attribute, _)), ::assertz(attribute_(Attribute, Value)), set_attributes(Attributes). - :- end_category. diff --git a/Logtalk/library/before_event_registry.lgt b/Logtalk/library/before_event_registry.lgt index 396642cf1..51b210e45 100644 --- a/Logtalk/library/before_event_registry.lgt +++ b/Logtalk/library/before_event_registry.lgt @@ -2,38 +2,30 @@ :- object(before_event_registry, implements(event_registryp)). - :- info([ version is 1.0, author is 'Paulo Moura', date is 2000/7/24, comment is 'Before events registry predicates.']). - monitors(Monitors) :- findall(Monitor, current_event(before, _, _, _, Monitor), List), {sort(List, Monitors)}. - monitored(Objects) :- findall(Object, current_event(before, Object, _, _, _), List), {sort(List, Objects)}. - monitor(Object, Message, Sender, Monitor) :- current_event(before, Object, Message, Sender, Monitor). - set_monitor(Object, Message, Sender, Monitor) :- define_events(before, Object, Message, Sender, Monitor). - del_monitors(Object, Message, Sender, Monitor) :- abolish_events(before, Object, Message, Sender, Monitor). - del_monitors :- abolish_events(before, _, _, _, _). - :- end_object. diff --git a/Logtalk/library/bintree.lgt b/Logtalk/library/bintree.lgt index d10279f30..b0d18314f 100644 --- a/Logtalk/library/bintree.lgt +++ b/Logtalk/library/bintree.lgt @@ -3,153 +3,112 @@ implements(dictionaryp), extends(compound)). - :- info([ version is 1.1, author is 'Paulo Moura', date is 2006/9/17, comment is 'Dictionary protocol implemented using binary trees.']). - :- private(map/4). :- meta_predicate(map(*, *, *, ::)). - :- mode(map(+atom, +tree, -tree, -callable), zero_or_one). - as_list(Tree, List) :- as_list(Tree, [], List). - as_list(t, List, List). - as_list(t(Key, Value, Left, Right), Acc, List) :- as_list(Right, Acc, Acc2), as_list(Left, [Key-Value| Acc2], List). - empty(Tree) :- Tree == t. - insert(Key, Value, t, t(Key, Value, t, t)) :- nonvar(Key). - insert(Key, Value, t(Key1, Value1, Left1, Right1), t(Key1, Value2, Left2, Right2)) :- compare(Order, Key, Key1), insert(Order, Key, Value, Key1, Value1, Left1, Right1, Value2, Left2, Right2). - insert(=, _, Value, _, _, Left, Right, Value, Left, Right). - insert(<, Key, Value, _, Value1, Left1, Right, Value1, Left2, Right) :- insert(Key, Value, Left1, Left2). - insert(>, Key, Value, _, Value1, Left, Right1, Value1, Left, Right2) :- insert(Key, Value, Right1, Right2). - insert_all([], Tree, Tree). - insert_all([Key-Value| Rest], Old, New) :- insert(Key, Value, Old, Aux), insert_all(Rest, Aux, New). - lookup(Key, Value, Tree) :- - var(Key) -> + ( var(Key) -> lookup_var(Key, Value, Tree) - ; - lookup_nonvar(Key, Value, Tree). - + ; lookup_nonvar(Key, Value, Tree) + ). lookup_nonvar(Key, Value, t(Key1, Value1, Left1, Right1)) :- compare(Order, Key, Key1), lookup_nonvar(Order, Key, Value, Value1, Left1, Right1). - lookup_nonvar(=, _, Value, Value, _, _). - lookup_nonvar(<, Key, Value, _, Left, _) :- lookup_nonvar(Key, Value, Left). - lookup_nonvar(<, Key, Value, _, _, Right) :- lookup_nonvar(Key, Value, Right). - lookup_var(Key, Value, t(_, _, Left, _)) :- lookup_var(Key, Value, Left). - lookup_var(Key, Value, t(Key, Value,_,_)). - lookup_var(Key, Value, t(_, _, _, Right)) :- lookup_var(Key, Value, Right). - keys(Tree, Keys) :- keys(Tree, [], Keys). - keys(t, Keys, Keys). - keys(t(Key, _, Left, Right), Acc, Keys) :- keys(Right, Acc, Acc2), keys(Left, [Key| Acc2], Keys). - delete(t, _, _, t). - delete(t(Key1, Value1, Left1, Right1), Key, Value, Out) :- compare(Order, Key, Key1), delete(Order, Key1, Value1, Left1, Right1, Key, Value, Out). - delete(=, Key1, Value1, Left1, Right1, Key1, Value1, Out) :- join(Left1, Right1, Out). - delete(<, Key1, Value1, Left1, Right1, Key, Value, t(Key1, Value1, Left2, Right1)) :- delete(Left1, Key, Value, Left2). - delete(>, Key1, Value1, Left1, Right1, Key, Value, t(Key1, Value1, Left1, Right2)) :- delete(Right1, Key, Value, Right2). - join(t, Right, Right) :- !. - join(Left, t, Left) :- !. - join(t(Key, Value, Left, Right), Tree, t(Key, Value, Left, Right2)) :- join(Right, Tree, Right2). - map(Pred, Old, New) :- map(Pred, Old, New, _). - map(Pred, t(Key1, Value1, Left1, Right1), t(Key2, Value2, Left2, Right2), Goal) :- Goal =.. [Pred, Key1-Value1, Key2-Value2], once(Goal), map(Pred, Left1, Left2, _), map(Pred, Right1, Right2, _). - map(_, t, t, _). - new(t). - size(Dictionary, Size) :- size(Dictionary, 0, Size). - size(t, Size, Size). - size(t(_, _, Left, Right), Acc, Size) :- size(Left, Acc, Acc2), Acc3 is Acc2 + 1, size(Right, Acc3, Size). - :- end_object. diff --git a/Logtalk/library/callable.lgt b/Logtalk/library/callable.lgt index 636b399bf..402cf17b8 100644 --- a/Logtalk/library/callable.lgt +++ b/Logtalk/library/callable.lgt @@ -2,16 +2,16 @@ :- object(callable, extends(term)). - :- info([ - version is 1.0, + version is 1.1, author is 'Paulo Moura', - date is 2000/7/24, + date is 2007/4/29, comment is 'Callable term type predicates.']). - valid(Callable) :- - once((atom(Callable); compound(Callable))). - + ( atom(Callable) -> + true + ; compound(Callable) + ). :- end_object. diff --git a/Logtalk/library/character.lgt b/Logtalk/library/character.lgt index c76619a3c..750ebef02 100644 --- a/Logtalk/library/character.lgt +++ b/Logtalk/library/character.lgt @@ -3,87 +3,68 @@ implements(characterp), extends(atom)). - :- info([ version is 1.0, author is 'Paulo Moura', date is 2000/7/24, comment is 'Character predicates.']). - is_alpha('_'). - is_alpha(Char) :- is_letter(Char). - is_letter(Char) :- is_lower_case(Char). - is_letter(Char) :- is_upper_case(Char). - is_alphanumeric(Char) :- is_alpha(Char). - is_alphanumeric(Char) :- is_dec_digit(Char). - is_bin_digit(0). is_bin_digit(1). - is_octal_digit(Digit) :- Digit @>= 0, Digit @=< 7. - is_dec_digit(Digit) :- Digit @>= 0, Digit @=< 9. - is_hex_digit(Digit) :- Digit @>= 0, Digit @=< 9. - is_hex_digit(Digit) :- Digit @>= 'A', Digit @=< 'F'. - is_hex_digit(Digit) :- Digit @>= a, Digit @=< f. - is_lower_case(Char) :- Char @>= a, Char @=< z. - is_upper_case(Char) :- Char @>= 'A', Char @=< 'Z'. - is_vowel(a). is_vowel(e). is_vowel(i). is_vowel(o). is_vowel(u). - is_vowel('A'). is_vowel('E'). is_vowel('I'). is_vowel('O'). is_vowel('U'). - is_layout(' '). - lower_upper(a, 'A'). lower_upper(b, 'B'). lower_upper(c, 'C'). @@ -110,15 +91,12 @@ lower_upper(x, 'X'). lower_upper(y, 'Y'). lower_upper(z, 'Z'). - lower_upper(Char, Char) :- \+ (Char @>= a, Char @=< z), \+ (Char @>= 'A', Char @=< 'Z'). - valid(Character) :- atom(Character), atom_length(Character, 1). - :- end_object. diff --git a/Logtalk/library/characterp.lgt b/Logtalk/library/characterp.lgt index 5699dae81..1049fd655 100644 --- a/Logtalk/library/characterp.lgt +++ b/Logtalk/library/characterp.lgt @@ -1,122 +1,84 @@ :- protocol(characterp). - :- info([ version is 1.0, author is 'Paulo Moura', date is 2000/7/24, comment is 'Character protocol.']). - :- public(is_alphanumeric/1). - :- mode(is_alphanumeric(+char), zero_or_one). - :- info(is_alphanumeric/1, [ comment is 'True if the argument is an alphanumeric character.', argnames is ['Term']]). - :- public(is_alpha/1). - :- mode(is_alpha(+char), zero_or_one). - :- info(is_alpha/1, [ comment is 'True if the argument is a letter or an underscore.', argnames is ['Term']]). - :- public(is_letter/1). - :- mode(is_letter(+char), zero_or_one). - :- info(is_letter/1, [ comment is 'True if the argument is a letter.', argnames is ['Term']]). - :- public(is_bin_digit/1). - :- mode(is_bin_digit(+char), zero_or_one). - :- info(is_bin_digit/1, [ comment is 'True if the argument is a binary digit.', argnames is ['Term']]). - :- public(is_octal_digit/1). - :- mode(is_octal_digit(+char), zero_or_one). - :- info(is_octal_digit/1, [ comment is 'True if the argument is an octal digit.', argnames is ['Term']]). - :- public(is_dec_digit/1). - :- mode(is_dec_digit(+char), zero_or_one). - :- info(is_dec_digit/1, [ comment is 'True if the argument is a decimal digit.', argnames is ['Term']]). - :- public(is_hex_digit/1). - :- mode(is_hex_digit(+char), zero_or_one). - :- info(is_hex_digit/1, [ comment is 'True if the argument is an hexadecimal digit.', argnames is ['Term']]). - :- public(is_lower_case/1). - :- mode(is_lower_case(+char), zero_or_one). - :- info(is_lower_case/1, [ comment is 'True if the argument is a lower case letter.', argnames is ['Term']]). - :- public(is_upper_case/1). - :- mode(is_upper_case(+char), zero_or_one). - :- info(is_upper_case/1, [ comment is 'True if the argument is a upper case letter.', argnames is ['Term']]). - :- public(is_vowel/1). - :- mode(is_vowel(+char), zero_or_one). - :- info(is_vowel/1, [ comment is 'True if the argument is a vowel.', argnames is ['Term']]). - :- public(is_layout/1). - :- mode(is_layout(+char), zero_or_one). - :- info(is_layout/1, [ comment is 'True if the argument is a layout character.', argnames is ['Term']]). - :- public(lower_upper/2). - :- mode(lower_upper(?char, ?char), zero_or_more). :- mode(lower_upper(+char, ?char), zero_or_one). :- mode(lower_upper(?char, +char), zero_or_one). - :- info(lower_upper/2, [ comment is 'Converts between lower and upper case letters.', argnames is ['Term1', 'Term2']]). - :- end_protocol. diff --git a/Logtalk/library/class_hierarchy.lgt b/Logtalk/library/class_hierarchy.lgt index af6757ee6..30b5960f5 100644 --- a/Logtalk/library/class_hierarchy.lgt +++ b/Logtalk/library/class_hierarchy.lgt @@ -2,69 +2,56 @@ :- category(class_hierarchy, implements(class_hierarchyp)). - :- info([ version is 1.1, author is 'Paulo Moura', date is 2006/2/20, comment is 'Class hierarchy predicates.']). - class(Class) :- self(Self), instantiates_class(Self, Class). - classes(Classes) :- self(Self), findall(Class, instantiates_class(Self, Class), Classes). - ancestor(Ancestor) :- self(Self), ancestor(Self, Ancestor). - ancestor(Self, Ancestor) :- instantiates_class(Self, Ancestor). - ancestor(Self, Ancestor) :- instantiates_class(Self, Class), superclass(Class, Ancestor). - ancestors(Ancestors) :- self(Self), findall(Ancestor, ancestor(Self, Ancestor), Ancestors). - instance(Instance) :- self(Self), instantiates_class(Instance, Self). - instances(Instances) :- self(Self), findall(Instance, instantiates_class(Instance, Self), Instances). - subclass(Subclass) :- self(Self), specializes_class(Subclass, Self). - subclasses(Subclasses) :- self(Self), findall(Subclass, specializes_class(Subclass, Self), Subclasses). - superclass(Superclass) :- self(Self), superclass(Self, Superclass). superclass(Self, Superclass) :- specializes_class(Self, Superclass). - superclass(Self, Superclass) :- specializes_class(Self, Class), superclass(Class, Superclass). @@ -73,27 +60,22 @@ self(Self), findall(Superclass, specializes_class(Self, Superclass), Superclasses). - leaf(Leaf) :- self(Self), leaf(Self, Leaf). - leaf(Self, Leaf) :- instantiates_class(Leaf, Self), \+ instantiates_class(_, Leaf), \+ specializes_class(_, Leaf). - leaf(Self, Leaf) :- specializes_class(Leaf, Self), \+ instantiates_class(_, Leaf), \+ specializes_class(_, Leaf). - leaf(Self, Leaf) :- specializes_class(Subclass, Self), leaf(Subclass, Leaf). - leaves(Leaves) :- self(Self), ( setof(Leaf, leaf(Self, Leaf), Leaves) -> @@ -101,21 +83,17 @@ ; Leaves = [] ). - leaf_instance(Leaf) :- self(Self), leaf_instance(Self, Leaf). - leaf_instance(Self, Leaf) :- instantiates_class(Leaf, Self), \+ instantiates_class(_, Leaf). - leaf_instance(Self, Leaf) :- specializes_class(Subclass, Self), leaf_instance(Subclass, Leaf). - leaf_instances(Leaves) :- self(Self), ( setof(Leaf, leaf_instance(Self, Leaf), Leaves) -> @@ -123,7 +101,6 @@ ; Leaves = [] ). - leaf_class(Leaf) :- self(Self), leaf_class(Self, Leaf). @@ -131,7 +108,6 @@ leaf_class(Self, Leaf) :- specializes_class(Leaf, Self), \+ specializes_class(_, Leaf). - leaf_class(Self, Leaf) :- specializes_class(Subclass, Self), leaf_class(Subclass, Leaf). @@ -143,24 +119,19 @@ ; Leaves = [] ). - descendant(Descendant) :- self(Self), descendant(Self, Descendant). - descendant(Self, Descendant) :- instantiates_class(Descendant, Self). - descendant(Self, Descendant) :- specializes_class(Descendant, Self), \+ instantiates_class(Descendant, Self). - descendant(Self, Descendant) :- specializes_class(Subclass, Self), descendant(Subclass, Descendant). - descendants(Descendants) :- self(Self), ( setof(Descendant, descendant(Self, Descendant), Descendants) -> @@ -168,20 +139,16 @@ ; Descendants = [] ). - descendant_class(Descendant) :- self(Self), descendant_class(Self, Descendant). - descendant_class(Self, Descendant) :- specializes_class(Descendant, Self). - descendant_class(Self, Descendant) :- specializes_class(Subclass, Self), descendant_class(Subclass, Descendant). - descendant_classes(Descendants) :- self(Self), ( setof(Descendant, descendant_class(Self, Descendant), Descendants) -> @@ -189,20 +156,16 @@ ; Descendants = [] ). - descendant_instance(Descendant) :- self(Self), descendant_instance(Self, Descendant). - descendant_instance(Self, Descendant) :- instantiates_class(Descendant, Self). - descendant_instance(Self, Descendant) :- specializes_class(Subclass, Self), descendant_instance(Subclass, Descendant). - descendant_instances(Descendants) :- self(Self), ( setof(Descendant, descendant_instance(Self, Descendant), Descendants) -> @@ -210,5 +173,4 @@ ; Descendants = [] ). - :- end_category. diff --git a/Logtalk/library/class_hierarchyp.lgt b/Logtalk/library/class_hierarchyp.lgt index f3dbc14b4..350f6d222 100644 --- a/Logtalk/library/class_hierarchyp.lgt +++ b/Logtalk/library/class_hierarchyp.lgt @@ -2,156 +2,106 @@ :- protocol(class_hierarchyp, extends(hierarchyp)). - :- info([ version is 1.0, author is 'Paulo Moura', date is 2000/7/24, comment is 'Class hierarchy protocol.']). - :- public(class/1). - :- mode(class(?object), zero_or_more). - :- info(class/1, [ comment is 'Returns, by backtracking, all object classes.', argnames is ['Class']]). - :- public(classes/1). - :- mode(classes(-list), one). - :- info(classes/1, [ comment is 'List of all object classes.', argnames is ['Classes']]). - :- public(instance/1). - :- mode(instance(?object), zero_or_more). - :- info(instance/1, [ comment is 'Returns, by backtracking, all class instances.', argnames is ['Instance']]). - :- public(instances/1). - :- mode(instances(-list), one). - :- info(instances/1, [ comment is 'List of all class instances.', argnames is ['Instances']]). - :- public(subclass/1). - :- mode(subclass(?object), zero_or_more). - :- info(subclass/1, [ comment is 'Returns, by backtracking, all class subclasses.', argnames is ['Subclass']]). - :- public(subclasses/1). - :- mode(subclasses(-list), one). - :- info(subclasses/1, [ comment is 'List of all class subclasses.', argnames is ['Subclasses']]). - :- public(superclass/1). - :- mode(superclass(?object), zero_or_more). - :- info(superclass/1, [ comment is 'Returns, by backtracking, all class superclasses.', argnames is ['Superclass']]). - :- public(superclasses/1). - :- mode(superclasses(-list), one). - :- info(superclasses/1, [ comment is 'List of all class superclasses.', argnames is ['Superclasses']]). - :- public(leaf_instance/1). - :- mode(leaf_instance(?object), zero_or_more). - :- info(leaf_instance/1, [ comment is 'Returns, by backtracking, all class leaf instances.', argnames is ['Leaf']]). - :- public(leaf_instances/1). - :- mode(leaf_instances(-list), one). - :- info(leaf_instances/1, [ comment is 'List of all class leaf instances.', argnames is ['Leaves']]). - :- public(leaf_class/1). - :- mode(leaf_class(?object), zero_or_more). - :- info(leaf_class/1, [ comment is 'Returns, by backtracking, all class leaf subclasses.', argnames is ['Leaf']]). - :- public(leaf_classes/1). - :- mode(leaf_classes(-list), one). - :- info(leaf_classes/1, [ comment is 'List of all class leaf leaf subclasses.', argnames is ['Leaves']]). - :- public(descendant_instance/1). - :- mode(descendant_instance(?object), zero_or_more). - :- info(descendant_instance/1, [ comment is 'Returns, by backtracking, all class descendant instances.', argnames is ['Descendant']]). - :- public(descendant_instances/1). - :- mode(descendant_instances(-list), one). - :- info(descendant_instances/1, [ comment is 'List of all class descendant instances.', argnames is ['Descendants']]). - :- public(descendant_class/1). - :- mode(descendant_class(?object), zero_or_more). - :- info(descendant_class/1, [ comment is 'Returns, by backtracking, all class descendant subclasses.', argnames is ['Descendant']]). - :- public(descendant_classes/1). - :- mode(descendant_classes(-list), one). - :- info(descendant_classes/1, [ comment is 'List of all class descendant subclasses.', argnames is ['Descendants']]). - :- end_protocol. diff --git a/Logtalk/library/comparingp.lgt b/Logtalk/library/comparingp.lgt index 166487405..5de6a21ca 100644 --- a/Logtalk/library/comparingp.lgt +++ b/Logtalk/library/comparingp.lgt @@ -1,66 +1,46 @@ :- protocol(comparingp). - :- info([ version is 1.0, author is 'Paulo Moura', date is 2000/7/24, comment is 'Comparing protocol using overloading of standard operators.']). - :- public((<)/2). - :- mode(<(+term, +term), zero_or_one). - :- info((<)/2, [ comment is 'True if Term1 is less than Term2.', argnames is ['Term1', 'Term2']]). - :- public((=<)/2). - :- mode(=<(+term, +term), zero_or_one). - :- info((=<)/2, [ comment is 'True if Term1 is less or equal than Term2.', argnames is ['Term1', 'Term2']]). - :- public((>)/2). - :- mode(>(+term, +term), zero_or_one). - :- info((>)/2, [ comment is 'True if Term1 is greater than Term2.', argnames is ['Term1', 'Term2']]). - :- public((>=)/2). - :- mode(>=(+term, +term), zero_or_one). - :- info((>=)/2, [ comment is 'True if Term1 is equal or grater than Term2.', argnames is ['Term1', 'Term2']]). - :- public((=:=)/2). - :- mode(=:=(+term, +term), zero_or_one). - :- info((=:=)/2, [ comment is 'True if Term1 is equal to Term2.', argnames is ['Term1', 'Term2']]). - :- public((=\=)/2). - :- mode(=\=(+term, +term), zero_or_one). - :- info((=\=)/2, [ comment is 'True if Term1 is not equal to Term2.', argnames is ['Term1', 'Term2']]). - :- end_protocol. diff --git a/Logtalk/library/compound.lgt b/Logtalk/library/compound.lgt index 190a53cab..d1ebbf503 100644 --- a/Logtalk/library/compound.lgt +++ b/Logtalk/library/compound.lgt @@ -2,16 +2,13 @@ :- object(compound, extends(term)). - :- info([ version is 1.0, author is 'Paulo Moura', date is 2000/7/24, comment is 'Compound data type.']). - valid(Compound) :- compound(Compound). - :- end_object. diff --git a/Logtalk/library/date.lgt b/Logtalk/library/date.lgt index a762b2af9..5d15cfa87 100644 --- a/Logtalk/library/date.lgt +++ b/Logtalk/library/date.lgt @@ -2,25 +2,21 @@ :- object(date, implements(datep)). - :- info([ version is 1.1, author is 'Paulo Moura', date is 2006/3/7, comment is 'Date predicates.']). - today(Year, Month, Day) :- {'$lgt_current_date'(Year, Month, Day)}. - leap_year(Year) :- ( 0 =:= mod(Year, 4), 0 =\= mod(Year, 100) -> true ; 0 =:= mod(Year, 400) ). - name_of_day(1, 'Sunday', 'Sun'). name_of_day(2, 'Monday', 'Mon'). name_of_day(3, 'Tuesday', 'Tue'). @@ -29,7 +25,6 @@ name_of_day(6, 'Friday', 'Fri'). name_of_day(7, 'Saturday', 'Sat'). - name_of_month( 1, 'January', 'Jan'). name_of_month( 2, 'February', 'Feb'). name_of_month( 3, 'March', 'Mar'). @@ -43,7 +38,6 @@ name_of_month(11, 'November', 'Nov'). name_of_month(12, 'December', 'Dec'). - days_in_month( 1, _, 31). days_in_month( 2, Year, Days) :- leap_year(Year) -> Days = 29; Days = 28. @@ -58,7 +52,6 @@ days_in_month(11, _, 30). days_in_month(12, _, 31). - valid(Year, Month, Day) :- integer(Year), integer(Month), Month >= 1, Month =< 12, @@ -66,5 +59,4 @@ days_in_month(Month, Year, Days), Day >= 1, Day =< Days. - :- end_object. diff --git a/Logtalk/library/datep.lgt b/Logtalk/library/datep.lgt index 4cd6984fc..102f4f9fb 100644 --- a/Logtalk/library/datep.lgt +++ b/Logtalk/library/datep.lgt @@ -1,66 +1,46 @@ :- protocol(datep). - :- info([ version is 1.1, author is 'Paulo Moura', date is 2005/3/17, comment is 'Date protocol.']). - :- public(today/3). - :- mode(today(-integer, -integer, -integer), one). - :- info(today/3, [ comment is 'Returns current date.', argnames is ['Year', 'Month', 'Day']]). - :- public(leap_year/1). - :- mode(leap_year(+integer), zero_or_one). - :- info(leap_year/1, [comment is 'True if the argument is a leap year.', argnames is ['Year']]). - :- public(name_of_day/3). - :- mode(name_of_day(?integer, ?atom, ?atom), zero_or_more). - :- info(name_of_day/3, [ comment is 'Name and short name of day.', argnames is ['Index', 'Name', 'Short']]). - :- public(name_of_month/3). - :- mode(name_of_month(?integer, ?atom, ?atom), zero_or_more). - :- info(name_of_month/3, [ comment is 'Name and short name of month.', argnames is ['Index', 'Name', 'Short']]). - :- public(days_in_month/3). - :- mode(days_in_month(?integer, +integer, ?integer), zero_or_more). - :- info(days_in_month/3, [ comment is 'Number of days in a month.', argnames is ['Month', 'Year', 'Days']]). - :- public(valid/3). - :- mode(valid(@integer, @integer, @integer), zero_or_one). - :- info(valid/3, [ comment is 'True if the arguments represent a valid date.', argnames is ['Year', 'Month', 'Day']]). - :- end_protocol. diff --git a/Logtalk/library/dates.notes b/Logtalk/library/dates.notes index 4fc9d55a8..5cd14dca7 100644 --- a/Logtalk/library/dates.notes +++ b/Logtalk/library/dates.notes @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load all entities in this group load the dates_loader.lgt utility diff --git a/Logtalk/library/dates_loader.lgt b/Logtalk/library/dates_loader.lgt index ea510475c..eb3840cdf 100644 --- a/Logtalk/library/dates_loader.lgt +++ b/Logtalk/library/dates_loader.lgt @@ -1,5 +1,3 @@ :- initialization( - logtalk_load([ - datep, date, - timep, time])). + logtalk_load([datep, date, timep, time], [reload(skip)])). diff --git a/Logtalk/library/debugging.notes b/Logtalk/library/debugging.notes index 7d7c2de33..e8ee0347e 100644 --- a/Logtalk/library/debugging.notes +++ b/Logtalk/library/debugging.notes @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load all entities in this group load the debugging_loader.lgt utility diff --git a/Logtalk/library/debugging_loader.lgt b/Logtalk/library/debugging_loader.lgt index 84e2e1729..da145feb4 100644 --- a/Logtalk/library/debugging_loader.lgt +++ b/Logtalk/library/debugging_loader.lgt @@ -1,3 +1,3 @@ :- initialization( - logtalk_load([event_dbgp, event_dbg], [events(on)])). + logtalk_load([event_dbgp, event_dbg], [events(on), reload(skip)])). diff --git a/Logtalk/library/dependents.notes b/Logtalk/library/dependents.notes index 7585f4f65..a4d22be5b 100644 --- a/Logtalk/library/dependents.notes +++ b/Logtalk/library/dependents.notes @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load all entities in this group load the dependents_loader.lgt diff --git a/Logtalk/library/dependents_loader.lgt b/Logtalk/library/dependents_loader.lgt index 03f1e494c..9c8c85e98 100644 --- a/Logtalk/library/dependents_loader.lgt +++ b/Logtalk/library/dependents_loader.lgt @@ -1,3 +1,3 @@ :- initialization( - logtalk_load([observer, subject])). + logtalk_load([observer, subject], [reload(skip)])). diff --git a/Logtalk/library/dictionaryp.lgt b/Logtalk/library/dictionaryp.lgt index 9615dc098..0fa7d5a94 100644 --- a/Logtalk/library/dictionaryp.lgt +++ b/Logtalk/library/dictionaryp.lgt @@ -1,103 +1,71 @@ :- protocol(dictionaryp). - :- info([ version is 1.0, author is 'Paulo Moura', date is 2000/7/24, comment is 'Dictionary protocol.']). - :- public(as_dictionary/2). - :- mode(as_dictionary(@list, -dictionary), one). - :- info(as_dictionary/2, [ comment is 'Converts a list of key-value pairs to a dictionary.', argnames is ['List', 'Dictionary']]). - :- public(as_list/2). - :- mode(as_list(@dictionary, -list), one). - :- info(as_list/2, [ comment is 'Converts a dictionary to a list of key-value pairs.', argnames is ['Dictionary', 'List']]). - :- public(delete/4). - :- mode(delete(+dictionary, @ground, ?term, -dictionary), zero_or_one). - :- info(delete/4, [ comment is 'Deletes a matching Key-Value pair from a dictionary, returning the updated dictionary.', argnames is ['Dictionary_in', 'Key', 'Value', 'Dictionary_out']]). - :- public(empty/1). - :- mode(empty(@dictionary), zero_or_one). - :- info(empty/1, [ comment is 'True if the dictionary is empty.', argnames is ['Dictionary']]). - :- public(insert/4). - :- mode(insert(+ground, @term, +dictionary, -dictionary), one). - :- info(insert/4, [ comment is 'Inserts a Key-Value pair into a dictionary, returning the updated dictionary.', argnames is ['Key', 'Value', 'Dictionary_in', 'Dictionary_out']]). - :- public(insert_all/3). - :- mode(insert_all(@list, +dictionary, -dictionary), one). - :- info(insert_all/3, [ comment is 'Inserts a list of Key-Value pairs into a dictionary, returning the updated dictionary.', argnames is ['List', 'Dictionary_in', 'Dictionary_out']]). - :- public(lookup/3). - :- mode(lookup(+ground, ?term, @dictionary), zero_or_one). :- mode(lookup(-ground, ?term, @dictionary), zero_or_more). - :- info(lookup/3, [ comment is 'Get a matching Key-Value pair from a dictionary.', argnames is ['Key', 'Value', 'Dictionary']]). - :- public(keys/2). - :- mode(keys(@dictionary, -list), one). - :- info(keys/2, [ comment is 'Returns a list with all dictionary keys.', argnames is ['Dictionary', 'List']]). - :- public(map/3). - :- mode(map(+functor, +dictionary, -dictionary), zero_or_one). - :- info(map/3, [ comment is 'Maps a binary predicate over each dictionary key-value pair returning a new pair.', argnames is ['Functor', 'In', 'Out']]). - :- public(size/2). - :- mode(size(@dictionary, ?integer), zero_or_one). - :- info(size/2, [ comment is 'Number of dictionary entries.', argnames is ['Dictionary', 'Size']]). - :- end_protocol. diff --git a/Logtalk/library/difflist.lgt b/Logtalk/library/difflist.lgt index c18c8790f..a23725e83 100644 --- a/Logtalk/library/difflist.lgt +++ b/Logtalk/library/difflist.lgt @@ -3,28 +3,22 @@ implements(listp), extends(compound)). - :- info([ version is 1.1, author is 'Paulo Moura', date is 2004/5/9, comment is 'Difference list predicates.']). - :- public(as_list/2). - :- mode(as_list(+list, -list), one). - :- info(as_list/2, [comment is 'Converts a difference list to a normal list.', argnames is ['Diffist', 'List']]). - append(List1-Back1, Back1-Back2, List1-Back2) :- nonvar(List1), nonvar(Back1), !. - append(Prefix, Suffix, List) :- length(List, Length), prefix(Prefix, List), @@ -33,187 +27,153 @@ length(Suffix, SLength), suffix(Suffix, List). - as_list(List-Back, Out) :- - List == Back -> + ( List == Back -> Out = [] - ; - Out = [Head| Tail], + ; Out = [Head| Tail], List = [Head| Rest], - as_list(Rest-Back, Tail). - + as_list(Rest-Back, Tail) + ). delete(List-Back, Element, Remaining) :- - List == Back -> + ( List == Back -> unify_with_occurs_check(Remaining, Back-Back) - ; - List \== Back, + ; List \== Back, List = [Head| Tail], - (Head == Element -> + ( Head == Element -> delete(Tail-Back, Element, Remaining) - ; - Remaining = [Head| Tail2], - delete(Tail-Back, Element, Tail2-Back)). - - + ; Remaining = [Head| Tail2], + delete(Tail-Back, Element, Tail2-Back) + ) + ). delete_matches(List-Back, Element, Remaining) :- - List == Back -> + ( List == Back -> unify_with_occurs_check(Remaining, Back-Back) - ; - List \== Back, + ; List \== Back, List = [Head| Tail], - (\+ \+ Head = Element -> + ( \+ \+ Head = Element -> delete_matches(Tail-Back, Element, Remaining) - ; - Remaining = [Head| Tail2], - delete_matches(Tail-Back, Element, Tail2-Back)). - + ; Remaining = [Head| Tail2], + delete_matches(Tail-Back, Element, Tail2-Back) + ) + ). empty(List-Back) :- List == Back. - flatten(List-Back, Flatted-Back) :- flatten(List-Back, Back-Back, Flatted-Back). - flatten(Var, Tail-Back, [Var| Tail]-Back) :- var(Var), !. - flatten(List-Back, Flatted, Flatted) :- List == Back, !. - flatten(List-Back, Acc, Flatted) :- !, List \== Back, List = [Head| Tail], flatten(Tail-Back, Acc, Acc2), flatten(Head, Acc2, Flatted). - flatten(Head, Tail-Back, [Head| Tail]-Back). - keysort(Difflist, Sorted) :- as_list(Difflist, List), {keysort(List, List2)}, list::as_difflist(List2, Sorted). - last(List-Back, Last) :- List \== Back, List = [Head| Tail], last(Tail-Back, Head, Last). - last(List, Last, Last) :- unify_with_occurs_check(List, Back-Back). - last(List-Back, _, Last) :- List \== Back, List = [Head| Tail], last(Tail-Back, Head, Last). - length(List, Length) :- - integer(Length) -> + ( integer(Length) -> Length >= 0, make_list(Length, List) - ; - length(List, 0, Length). - + ; length(List, 0, Length) + ). length(List, Length, Length) :- unify_with_occurs_check(List, Back-Back). - length(List-Back, Acc, Length) :- List \== Back, List = [_| Tail], Acc2 is Acc + 1, length(Tail-Back, Acc2, Length). - make_list(0, List):- !, unify_with_occurs_check(List, Back-Back). - make_list(N, List-Back):- List \== Back, List = [_| Tail], M is N-1, make_list(M, Tail-Back). - max(List-Back, Max) :- List \== Back, List = [Head| Tail], max(Tail-Back, Head, Max). - max(List-Back, Max, Max) :- List == Back, !. - max(List-Back, Aux, Max) :- List \== Back, List = [Head| Tail], - (Aux @< Head -> + ( Aux @< Head -> max(Tail-Back, Head, Max) - ; - max(Tail-Back, Aux, Max)). - + ; max(Tail-Back, Aux, Max) + ). member(Element, List-Back) :- List \== Back, List = [Element|_]. - member(Element, List-Back) :- List \== Back, List = [_| Tail], member(Element, Tail-Back). - memberchk(Element, List) :- once(member(Element, List)). - nth0(Position, List, Element) :- nth(Element, List, 0, Position, _). - nth0(Nth, List, Element, Tail) :- nth(Element, List, 0, Nth, Tail). - nth1(Position, List, Element) :- nth(Element, List, 1, Position, _). - nth1(Nth, List, Element, Tail) :- nth(Element, List, 1, Nth, Tail). - nth(Element, List-Back, Position, Position, Tail-Back) :- List \== Back, List = [Element| Tail]. - nth(Element, List-Back, Count, Position, Tail-Back) :- List \== Back, List = [_| List2], Count2 is Count + 1, nth(Element, List2-Back, Count2, Position, Tail-Back). - min(List-Back, Min) :- List \== Back, List = [Head| Tail], min(Tail-Back, Head, Min). - min(List-Back, Min, Min) :- List == Back, !. - min(List-Back, Aux, Min) :- List \== Back, List = [Head| Tail], @@ -222,30 +182,24 @@ ; min(Tail-Back, Aux, Min)). - new(List) :- unify_with_occurs_check(List, Back-Back). - permutation(List, Permutation) :- same_length(List, Permutation), permutation2(List, Permutation). - permutation2(List1-Back1, List2-Back2) :- List1 == Back1, List2 == Back2. - permutation2(List1-Back1, List2-Back2) :- List2 \== Back2, List2 = [Head2| Tail2], select(Head2, List1-Back1, Tail1-Back1), permutation2(Tail1-Back1, Tail2-Back2). - prefix(List, _) :- unify_with_occurs_check(List, Back-Back). - prefix(List-Back, List2-Back2) :- List \== Back, List = [Head| Tail], @@ -253,25 +207,20 @@ List2 = [Head| Tail2], prefix(Tail-Back, Tail2-Back2). - reverse(List-Back, Reversed-Back) :- same_length(List-Back, Reversed-Back), reverse(List-Back, Back-Back, Reversed-Back). - reverse(List-Back, Reversed, Reversed) :- List == Back. - reverse(List-Back, Acc-Back, Reversed) :- List \== Back, List = [Head| Tail], reverse(Tail-Back, [Head| Acc]-Back, Reversed). - same_length(List1, List2) :- unify_with_occurs_check(List1, Back1-Back1), unify_with_occurs_check(List2, Back2-Back2). - same_length(List1-Back1, List2-Back2) :- List1 \== Back1, List1 = [_| Tail1], @@ -279,11 +228,9 @@ List2 = [_| Tail2], same_length(Tail1-Back1, Tail2-Back2). - select(Head, List-Back, Tail-Back) :- List \== Back, List = [Head| Tail]. - select(Head, List-Back, List2-Back) :- List \== Back, List = [Other| Tail], @@ -291,40 +238,32 @@ List2 = [Other| Tail2], select(Head, Tail-Back, Tail2-Back). - sort(Difflist, Sorted) :- as_list(Difflist, List), {sort(List, List2)}, list::as_difflist(List2, Sorted). - sublist(Sublist, List) :- unify_with_occurs_check(Sublist, List). - sublist(Sublist-Back, List-Back):- List \== Back, List = [Head| Tail], sublist(Tail-Back, Head, Sublist-Back). - sublist(List, _, Sublist) :- unify_with_occurs_check(List, Sublist). - sublist(List-Back, _, Sublist-Back):- List \== Back, List = [Head| Tail], sublist(Tail-Back, Head, Sublist-Back). - sublist(List-Back, Element, [Element| Sublist]-Back):- List \== Back, List = [Head| Tail], sublist(Tail-Back, Head, Sublist-Back). - subtract(List-Back, _, Result) :- unify_with_occurs_check(Result, Back-Back), List == Back, !. - subtract(List-Back, Ys, List2-Back) :- List \== Back, List = [Head| Tail], @@ -334,29 +273,23 @@ List2 = [Head| Tail2], subtract(Tail-Back, Ys, Tail2-Back)). - suffix(Suffix, List) :- unify_with_occurs_check(Suffix, List). - suffix(Suffix-Back, List-Back) :- List \== Back, List = [_| Tail], suffix(Suffix-Back, Tail-Back). - valid(List) :- nonvar(List), valid2(List). - valid2(List-Back) :- List == Back, !. - valid2(List-Back) :- nonvar(List), List = [_| Tail], valid2(Tail-Back). - :- end_object. diff --git a/Logtalk/library/event_dbg.lgt b/Logtalk/library/event_dbg.lgt index b9202487c..49f7c777e 100644 --- a/Logtalk/library/event_dbg.lgt +++ b/Logtalk/library/event_dbg.lgt @@ -3,63 +3,46 @@ implements(event_dbgp, monitoring), imports(monitor)). - :- info([ version is 1.1, date is 2006/12/15, author is 'Paulo Moura', comment is 'Debugging facilities similar to those found in most Prolog compilers.']). - :- initialization(::init). - :- protected(port_output/4). - :- mode(port_output(+atom, +object, @callable, +object), one). - :- info(port_output/4, [ comment is 'Outputs current port information.', argnames is ['Port', 'Object', 'Message', 'Sender']]). - :- protected(execute_option/1). - :- mode(execute_option(+atom), one). - :- info(execute_option/1, [ comment is 'Executes a user option at a debugger port.', argnames is ['Option']]). - :- protected(query_user/1). - :- mode(query_user(-atom), one). - :- info(query_user/1, [ comment is 'Query a user about an option at a debugger port.', argnames is ['Option']]). - :- private(stream_/2). :- dynamic(stream_/2). - :- mode(stream_(?atom, ?stream), zero_or_more). - :- info(stream/2, [ comment is 'Stores the current debugger input and ouput streams.', argnames is ['Kind', 'Stream']]). - stream(Name, Stream) :- ::stream_(Name, Stream). - set_stream(Name, Stream) :- ::retractall(stream_(Name, _)), ::assertz(stream_(Name, Stream)). - trace :- self(Self), abolish_events(before, _, _, _, Self), @@ -67,25 +50,20 @@ define_events(before, _, _, _, Self), define_events(after, _, _, _, Self). - notrace :- self(Self), abolish_events(before, _, _, _, Self), abolish_events(after, _, _, _, Self). - debugging :- ::monitor_activated. - debug :- ::activate_monitor. - nodebug :- ::suspend_monitor. - port_output(Port, Object, Message, Sender) :- ::stream(output, Output), write(Output, Port), @@ -97,7 +75,6 @@ writeq(Output, Sender), nl(Output). - query_user(Option) :- ::stream(output, Output), ::stream(input, Input), @@ -105,21 +82,18 @@ write(Output, ' >> '), read(Input, Option), nl(Output), - (valid_option(Option) -> + ( valid_option(Option) -> true - ; - ::execute_option(h), fail), + ; ::execute_option(h), + fail + ), !. - execute_option(c). - execute_option(f) :- !, fail. - execute_option(n) :- ::nodebug. - execute_option(b) :- ::stream(output,Output), ::stream(input, Input), @@ -128,17 +102,15 @@ read(Input, Goal), writeq(Output, Goal), nl(Output), - (once(Goal) -> + ( once(Goal) -> write(Output, ' answer: '), writeq(Output, Goal), nl(Output) - ; - write(Output, ' no'), nl(Output)), + ; write(Output, ' no'), nl(Output) + ), Goal = true, !. - execute_option(a) :- throw(error(logtalk_execution_aborted)). - execute_option(h) :- ::stream(output, Output), write(Output, ' Available options are:'), nl(Output), @@ -150,26 +122,22 @@ write(Output, ' h - help (prints this list of options)'), nl(Output), nl(Output). - valid_option(c). valid_option(f). valid_option(n). valid_option(b). valid_option(a). - before(Object, Message, Sender) :- ::port_output(call, Object, Message, Sender), ::query_user(Option), ::execute_option(Option). - after(Object, Message, Sender) :- ::port_output(exit, Object, Message, Sender), ::query_user(Option), ::execute_option(Option). - init :- ::reset_monitor, current_input(Input), @@ -177,5 +145,4 @@ current_output(Output), ::set_stream(output, Output). - :- end_object. diff --git a/Logtalk/library/event_dbgp.lgt b/Logtalk/library/event_dbgp.lgt index 6e5d2099c..ddba4d123 100644 --- a/Logtalk/library/event_dbgp.lgt +++ b/Logtalk/library/event_dbgp.lgt @@ -1,78 +1,52 @@ :- protocol(event_dbgp). - :- info([ version is 1.0, date is 2000/7/24, author is 'Paulo Moura', comment is 'Debugging protocol similar to those found in most Prolog compilers.']). - :- public(trace/0). - :- mode(trace, one). - :- info(trace/0, [ comment is 'Starts tracing all message sending events.']). - :- public(notrace/0). - :- mode(notrace, one). - :- info(notrace/0, [ comment is 'Stops tracing.']). - :- public(debug/0). - :- mode(debug, one). - :- info(debug/0, [ comment is 'Activates spy points and starts debugging.']). - :- public(nodebug/0). - :- mode(nodebug, one). - :- info(nodebug/0, [ comment is 'Suspends spy points and stops debugging.']). - :- public(debugging/0). - :- mode(debugging, zero_or_one). - :- info(debugging/0, [ comment is 'True if the debugger is active.']). - :- public(init/0). - :- mode(init, one). - :- info(init/0, [ comment is 'Initializes debugger, turns debugging off and resets all spy points and streams.']). - :- public(stream/2). - :- mode(stream(?atom, ?stream), zero_or_more). - :- info(stream/2, [ comment is 'Current debugger input or ouput streams.', argnames is ['Kind', 'Stream']]). - :- public(set_stream/2). - :- mode(set_stream(+atom, +stream), one). - :- info(set_stream/2, [ comment is 'Sets the debugger input or output stream.', argnames is ['Kind', 'Stream']]). - :- end_protocol. diff --git a/Logtalk/library/event_handlersp.lgt b/Logtalk/library/event_handlersp.lgt index db456fb43..263786a1f 100644 --- a/Logtalk/library/event_handlersp.lgt +++ b/Logtalk/library/event_handlersp.lgt @@ -1,30 +1,22 @@ :- protocol(event_handlersp). - :- info([ version is 1.1, author is 'Paulo Moura', date is 2003/2/12, comment is 'Event handlers protocol.']). - :- public(before/3). - :- mode(before(@object, @nonvar, @object), zero_or_one). - :- info(before/3, [ comment is 'Before event handler.', argnames is ['Object', 'Message', 'Sender']]). - :- public(after/3). - :- mode(after(@object, @nonvar, @object), zero_or_one). - :- info(after/3, [ comment is 'After event handler.', argnames is ['Object', 'Message', 'Sender']]). - :- end_protocol. diff --git a/Logtalk/library/event_registry.lgt b/Logtalk/library/event_registry.lgt index 9bcd44ae4..c93dc026e 100644 --- a/Logtalk/library/event_registry.lgt +++ b/Logtalk/library/event_registry.lgt @@ -2,14 +2,12 @@ :- object(event_registry, implements(event_registryp)). - :- info([ version is 1.0, author is 'Paulo Moura', date is 2000/7/24, comment is 'Before and after events registry predicates.']). - monitors(Monitors) :- findall( Monitor, @@ -18,7 +16,6 @@ List), {sort(List, Monitors)}. - monitored(Objects) :- findall( Object, @@ -27,25 +24,20 @@ List), {sort(List, Objects)}. - monitor(Object, Message, Sender, Monitor) :- current_event(before, Object, Message, Sender, Monitor), current_event(after, Object, Message, Sender, Monitor). - set_monitor(Object, Message, Sender, Monitor) :- define_events(before, Object, Message, Sender, Monitor), define_events(after, Object, Message, Sender, Monitor). - del_monitors(Object, Message, Sender, Monitor) :- abolish_events(before, Object, Message, Sender, Monitor), abolish_events(after, Object, Message, Sender, Monitor). - del_monitors :- abolish_events(before, _, _, _, _), abolish_events(after, _, _, _, _). - :- end_object. diff --git a/Logtalk/library/event_registryp.lgt b/Logtalk/library/event_registryp.lgt index 4ff9555be..fe65fe336 100644 --- a/Logtalk/library/event_registryp.lgt +++ b/Logtalk/library/event_registryp.lgt @@ -1,65 +1,45 @@ :- protocol(event_registryp). - :- info([ version is 1.0, author is 'Paulo Moura', date is 2000/7/24, comment is 'Event registry protocol.']). - :- public(monitors/1). - :- mode(monitors(-list), one). - :- info(monitors/1, [ comment is 'Returns a list of all current monitors.', argnames is ['Monitors']]). - :- public(monitored/1). - :- mode(monitored(-list), one). - :- info(monitored/1, [ comment is 'Returns a list of all currently monitored objects.', argnames is ['Objects']]). - :- public(monitor/4). - :- mode(monitor(?object, ?nonvar, ?object, ?object), zero_or_more). - :- info(monitor/4, [ comment is 'True if the arguments describe a currently defined monitored event.', argnames is ['Object', 'Message', 'Sender', 'Monitor']]). - :- public(set_monitor/4). - :- mode(set_monitor(?object, ?nonvar, ?object, +object), zero_or_one). - :- info(set_monitor/4, [ comment is 'Sets a monitor for the set of matching events.', argnames is ['Object', 'Message', 'Sender', 'Monitor']]). - :- public(del_monitors/4). - :- mode(del_monitors(?object, ?nonvar, ?object, ?object), one). - :- info(del_monitors/4, [ comment is 'Deletes all matching monitored events.', argnames is ['Object', 'Message', 'Sender', 'Monitor']]). - :- public(del_monitors/0). - :- mode(del_monitors, one). - :- info(del_monitors/0, [ comment is 'Deletes all monitored events.']). - :- end_protocol. diff --git a/Logtalk/library/events.notes b/Logtalk/library/events.notes index 90c24e6f9..446dc5a13 100644 --- a/Logtalk/library/events.notes +++ b/Logtalk/library/events.notes @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load all entities in this library load the events_loader.lgt utility diff --git a/Logtalk/library/events_loader.lgt b/Logtalk/library/events_loader.lgt index 13397f2c0..1c382b9a7 100644 --- a/Logtalk/library/events_loader.lgt +++ b/Logtalk/library/events_loader.lgt @@ -4,4 +4,4 @@ event_handlersp, event_registryp, event_registry, before_event_registry, after_event_registry, - monitorp, monitor])). + monitorp, monitor], [events(on), reload(skip)])). diff --git a/Logtalk/library/experimental/NOTES.txt b/Logtalk/library/experimental/NOTES.txt index 7ef29ba00..3a28a602e 100644 --- a/Logtalk/library/experimental/NOTES.txt +++ b/Logtalk/library/experimental/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ This folder contains objects, categories, and protocols whose implementation is Prolog-compiler dependent. Each sub-folder diff --git a/Logtalk/library/float.lgt b/Logtalk/library/float.lgt index 6a18c214d..318fdaa5b 100644 --- a/Logtalk/library/float.lgt +++ b/Logtalk/library/float.lgt @@ -2,16 +2,13 @@ :- object(float, extends(number)). - :- info([ version is 1.0, author is 'Paulo Moura', date is 2000/7/24, comment is 'Floating point numbers data type predicates.']). - valid(Float) :- float(Float). - :- end_object. diff --git a/Logtalk/library/hierarchies.notes b/Logtalk/library/hierarchies.notes index bff0c8abb..a0fbf7da1 100644 --- a/Logtalk/library/hierarchies.notes +++ b/Logtalk/library/hierarchies.notes @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load all entities in this group load the hierarchies_loader.lgt diff --git a/Logtalk/library/hierarchies_loader.lgt b/Logtalk/library/hierarchies_loader.lgt index 7a05c6f90..90e8c895f 100644 --- a/Logtalk/library/hierarchies_loader.lgt +++ b/Logtalk/library/hierarchies_loader.lgt @@ -3,4 +3,4 @@ logtalk_load([ hierarchyp, proto_hierarchyp, proto_hierarchy, - class_hierarchyp, class_hierarchy])). + class_hierarchyp, class_hierarchy], [reload(skip)])). diff --git a/Logtalk/library/hierarchyp.lgt b/Logtalk/library/hierarchyp.lgt index f1f1aacaa..009663f47 100644 --- a/Logtalk/library/hierarchyp.lgt +++ b/Logtalk/library/hierarchyp.lgt @@ -1,66 +1,46 @@ :- protocol(hierarchyp). - :- info([ version is 1.0, author is 'Paulo Moura', date is 2000/7/24, comment is 'Common hierarchy protocol for prototype and class hierarchies.']). - :- public(ancestor/1). - :- mode(ancestor(?object), zero_or_more). - :- info(ancestor/1, [ comment is 'Returns, by backtracking, all object ancestors.', argnames is ['Ancestor']]). - :- public(ancestors/1). - :- mode(ancestors(-list), one). - :- info(ancestors/1, [ comment is 'List of all object ancestors.', argnames is ['Ancestors']]). - :- public(leaf/1). - :- mode(leaf(?object), zero_or_more). - :- info(leaf/1, [ comment is 'Returns, by backtracking, all object leaves.', argnames is ['Leaf']]). - :- public(leaves/1). - :- mode(leaves(-list), one). - :- info(leaves/1, [ comment is 'List of all object leaves.', argnames is ['Leaves']]). - :- public(descendant/1). - :- mode(descendant(?object), zero_or_more). - :- info(descendant/1, [ comment is 'Returns, by backtracking, all object descendants.', argnames is ['Descendant']]). - :- public(descendants/1). - :- mode(descendants(-list), one). - :- info(descendants/1, [ comment is 'List of all object descendants.', argnames is ['Descendants']]). - :- end_protocol. diff --git a/Logtalk/library/integer.lgt b/Logtalk/library/integer.lgt index 18f876341..5431caf66 100644 --- a/Logtalk/library/integer.lgt +++ b/Logtalk/library/integer.lgt @@ -2,45 +2,37 @@ :- object(integer, extends(number)). - :- info([ - version is 1.0, + version is 1.1, author is 'Paulo Moura', - date is 2000/7/24, + date is 2007/4/20, comment is 'Integer data type predicates.']). - :- public(between/3). - - :- mode(between(+integer, +integer, ?integer), zero_or_more). - + :- mode(between(+integer, +integer, +integer), zero_or_one). + :- mode(between(+integer, +integer, -integer), zero_or_more). :- info(between/3, [ comment is 'Returns integers in the interval defined by the two first arguments.', argnames is ['Lower', 'Upper', 'Integer']]). - between(Lower, Upper, Integer) :- integer(Lower), integer(Upper), - (var(Integer) -> + ( var(Integer) -> Lower =< Upper, generate(Lower, Upper, Integer) - ; - integer(Integer), + ; integer(Integer), Lower =< Integer, - Integer =< Upper). - + Integer =< Upper + ). generate(Lower, _, Lower). - generate(Lower, Upper, Integer) :- Lower < Upper, Next is Lower + 1, generate(Next, Upper, Integer). - valid(Integer) :- integer(Integer). - :- end_object. diff --git a/Logtalk/library/list.lgt b/Logtalk/library/list.lgt index c98a15cc9..e93b0c1d8 100644 --- a/Logtalk/library/list.lgt +++ b/Logtalk/library/list.lgt @@ -3,37 +3,30 @@ implements(listp), extends(compound)). - :- info([ version is 1.3, author is 'Paulo Moura', date is 2006/12/21, comment is 'List predicates.']). - :- public(as_difflist/2). - :- mode(as_difflist(+list, -list), one). - :- info(as_difflist/2, [comment is 'Converts a list to a difference list.', argnames is ['List', 'Diffist']]). append([], List, List). - append([Head| Tail], List, [Head| Tail2]) :- append(Tail, List, Tail2). as_difflist([], Back-Back). - as_difflist([Head| Tail], [Head| Tail2]-Back) :- as_difflist(Tail, Tail2-Back). delete([], _, []). - delete([Head| Tail], Element, Remaining) :- ( Head == Element -> delete(Tail, Element, Remaining) @@ -41,9 +34,7 @@ delete(Tail, Element, Tail2) ). - delete_matches([], _, []). - delete_matches([Head| Tail], Element, Remaining) :- ( \+ \+ Head = Element -> delete_matches(Tail, Element, Remaining) @@ -51,44 +42,33 @@ delete_matches(Tail, Element, Tail2) ). - empty(List) :- List == []. - flatten(List, Flatted) :- flatten(List, [], Flatted). - flatten(Var, Tail, [Var| Tail]) :- var(Var), !. - flatten([], Flatted, Flatted) :- !. - flatten([Head| Tail], List, Flatted) :- !, flatten(Tail, List, Aux), flatten(Head, Aux, Flatted). - flatten(Head, Tail, [Head| Tail]). - keysort(List, Sorted) :- {keysort(List, Sorted)}. - last([Head| Tail], Last) :- last(Tail, Head, Last). - last([], Last, Last). - last([Head| Tail], _, Last) :- last(Tail, Head, Last). - length(List, Length) :- ( integer(Length) -> Length >= 0, @@ -96,84 +76,65 @@ ; length(List, 0, Length) ). - make_list(0, []):- !. - make_list(N, [_| Tail]):- M is N-1, make_list(M, Tail). - length([], Length, Length). - length([_| Tail], Acc, Length) :- Acc2 is Acc + 1, length(Tail, Acc2, Length). - max([N| Ns], Max) :- max(Ns, N, Max). max([], Max, Max). - max([N| Ns], Aux, Max) :- ( N @> Aux -> max(Ns, N, Max) ; max(Ns, Aux, Max) ). - member(Element, [Element| _]). - member(Element, [_| List]) :- member(Element, List). memberchk(Element, [Element| _]) :- !. - memberchk(Element, [_| List]) :- memberchk(Element, List). - min([N| Ns], Min) :- min(Ns, N, Min). min([], Min, Min). - min([N| Ns], Aux, Min) :- ( N @< Aux -> min(Ns, N, Min) ; min(Ns, Aux, Min) ). - new([]). - nextto(X, Y, [X, Y| _]). - nextto(X, Y, [_| Tail]) :- nextto(X, Y, Tail). - nth0(Nth, List, Element) :- nth(Element, List, 0, Nth, _). - nth0(Nth, List, Element, Tail) :- nth(Element, List, 0, Nth, Tail). - nth1(Nth, List, Element) :- nth(Element, List, 1, Nth, _). - nth1(Nth, List, Element, Tail) :- nth(Element, List, 1, Nth, Tail). - nth(Element, List, Acc, Nth, Tail) :- ( integer(Nth), Nth >= Acc, @@ -183,75 +144,53 @@ nth_aux(Element, List, Acc, Nth, Tail) ). - nth_aux(Head, [Head| Tail], Position, Position, Tail). - nth_aux(Head, [_| List], Count, Position, Tail) :- Count2 is Count + 1, nth_aux(Head, List, Count2, Position, Tail). - permutation(List, Permutation) :- same_length(List, Permutation), permutation2(List, Permutation). - permutation2([], []). - permutation2(List, [Head| Tail]) :- select(Head, List, Remaining), permutation2(Remaining, Tail). - prefix([], _). - prefix([Element| Tail], [Element| Tail2]) :- prefix(Tail, Tail2). - reverse(List, Reversed) :- reverse(List, [], Reversed, Reversed). - reverse([], Reversed, Reversed, []). - reverse([Head| Tail], List, Reversed, [_| Bound]) :- reverse(Tail, [Head| List], Reversed, Bound). - same_length([], []). - same_length([_| Tail1], [_| Tail2]) :- same_length(Tail1, Tail2). - select(Head, [Head| Tail], Tail). - select(Head, [Head2| Tail], [Head2| Tail2]) :- select(Head, Tail, Tail2). - sort(List, Sorted) :- {sort(List, Sorted)}. - sublist(List, List). - sublist(Sublist, [Head| Tail]):- sublist(Tail, Head, Sublist). - sublist(Sublist, _, Sublist). - sublist([Head| Tail], _, Sublist):- sublist(Tail, Head, Sublist). - sublist([Head| Tail], Element, [Element| Sublist]):- sublist(Tail, Head, Sublist). - subtract([], _, []). - subtract([Head| Tail], List, Rest) :- ( ::memberchk(Head, List) -> subtract(Tail, List, Rest) @@ -259,22 +198,16 @@ subtract(Tail, List, Tail2) ). - suffix(List, List). - suffix(List, [_| Tail]) :- suffix(List, Tail). - valid(List) :- nonvar(List), \+ \+ valid2(List). - valid2([]). - valid2([_| List]) :- valid2(List). - :- end_object. diff --git a/Logtalk/library/listp.lgt b/Logtalk/library/listp.lgt index 66462dcc3..32ad4ecc7 100644 --- a/Logtalk/library/listp.lgt +++ b/Logtalk/library/listp.lgt @@ -1,251 +1,171 @@ :- protocol(listp). - :- info([ version is 1.2, author is 'Paulo Moura', date is 2004/5/9, comment is 'List protocol.']). - :- public(append/3). - :- mode(append(?list, ?list, ?list), zero_or_more). - :- info(append/3, [ comment is 'Appends two lists.', argnames is ['List1', 'List2', 'List']]). - :- public(delete/3). - :- mode(delete(@list, @term, ?list), one). - :- info(delete/3, [comment is 'Deletes from a list all ocurrences of an element returning the list of remaining elements.', argnames is ['List', 'Element', 'Remaining']]). - :- public(delete_matches/3). - :- mode(delete_matches(@list, @term, ?list), one). - :- info(delete_matches/3, [comment is 'Deletes all matching elements from a list, returning the list of remaining elements.', argnames is ['List', 'Element', 'Remaining']]). - :- public(empty/1). - :- mode(empty(@list), zero_or_one). - :- info(empty/1, [comment is 'True if the argument is an empty list.', argnames is ['List']]). - :- public(flatten/2). - :- mode(flatten(+list, -list), one). - :- info(flatten/2, [comment is 'Flattens a list of lists into a list.', argnames is ['List', 'Flatted']]). - :- public(keysort/2). - :- mode(keysort(+list, -list), one). - :- info(keysort/2, [comment is 'Sorts a list of key-value pairs in ascending order.', argnames is ['List', 'Sorted']]). - :- public(last/2). - :- mode(last(?list, ?term), zero_or_more). - :- info(last/2, [comment is 'List last element (if it exists).', argnames is ['List', 'Last']]). - :- public(length/2). - :- mode(length(?list, ?integer), zero_or_more). - :- info(length/2, [comment is 'List length.', argnames is ['List', 'Length']]). - :- public(max/2). - :- mode(max(+list, -term), zero_or_one). - :- info(max/2, [comment is 'Determines the list maximum value using standard order. Fails if the list is empty.', argnames is ['List', 'Maximum']]). - :- public(member/2). - :- mode(member(?term, ?list), zero_or_more). - :- info(member/2, [comment is 'Element is a list member.', argnames is ['Element', 'List']]). - :- public(memberchk/2). - :- mode(memberchk(?term, ?list), zero_or_one). - :- info(memberchk/2, [comment is 'Checks if a term is a member of a list.', argnames is ['Element', 'List']]). - :- public(min/2). - :- mode(min(+list, -term), zero_or_one). - :- info(min/2, [comment is 'Determines the minimum value in a list using standard order. Fails if the list is empty.', argnames is ['List', 'Minimum']]). - :- public(nextto/3). - :- mode(nextto(?term, ?term, ?list), zero_or_more). - :- info(nextto/3, [ comment is 'X and Y are consecutive elements in List.', argnames is ['X', 'Y', 'List']]). - :- public(nth0/3). - :- mode(nth0(?integer, ?list, ?term), zero_or_more). - :- info(nth0/3, [ comment is 'Nth element of a list (counting from zero).', argnames is ['Nth', 'List', 'Element']]). - :- public(nth0/4). - :- mode(nth0(?integer, ?list, ?term, ?list), zero_or_more). - :- info(nth0/4, [ comment is 'Nth element of a list (counting from zero).', argnames is ['Nth', 'List', 'Element', 'Residue']]). - :- public(nth1/3). - :- mode(nth1(?integer, ?list, ?term), zero_or_more). - :- info(nth1/3, [ comment is 'Nth element of a list (counting from one).', argnames is ['Nth', 'List', 'Element']]). - :- public(nth1/4). - :- mode(nth1(?integer, ?list, ?term, ?list), zero_or_more). - :- info(nth1/4, [ comment is 'Nth element of a list (counting from zero).', argnames is ['Nth', 'List', 'Element', 'Residue']]). - :- public(permutation/2). - :- mode(permutation(?list, ?list), zero_or_more). - :- info(permutation/2, [comment is 'The two lists are a permutation of the same list.', argnames is ['List', 'Permutation']]). - :- public(prefix/2). - :- mode(prefix(?list, +list), zero_or_more). - :- info(prefix/2, [comment is 'Prefix is a prefix of List.', argnames is ['Prefix', 'List']]). - :- public(reverse/2). - :- mode(reverse(+list, ?list), zero_or_one). :- mode(reverse(?list, +list), zero_or_one). :- mode(reverse(-list, -list), one_or_more). - :- info(reverse/2, [comment is 'Reverses a list.', argnames is ['List', 'Reversed']]). - :- public(same_length/2). - :- mode(same_length(+list, ?list), zero_or_one). :- mode(same_length(?list, +list), zero_or_one). :- mode(same_length(-list, -list), one_or_more). - :- info(same_length/2, [comment is 'The two lists have the same length.', argnames is ['List1', 'List2']]). - :- public(select/3). - :- mode(select(?term, +list, ?list), zero_or_more). :- mode(select(?term, ?list, +list), zero_or_more). - :- info(select/3, [comment is 'Selects an element from a list, returning the list of remaining elements.', argnames is ['Element', 'List', 'Remaining']]). - :- public(sort/2). - :- mode(sort(+list, -list), one). - :- info(sort/2, [comment is 'Sorts a list in ascending order.', argnames is ['List', 'Sorted']]). - :- public(sublist/2). - :- mode(sublist(?list, +list), zero_or_more). - :- info(sublist/2, [comment is 'The first list is a sublist of the second.', argnames is ['Sublist', 'List']]). - :- public(subtract/3). - :- mode(subtract(+list, +list, -list), one). - :- info(subtract/3, [comment is 'Removes all elements in the second list from the first list, returning the list of remaining elements.', argnames is ['List', 'Elements', 'Remaining']]). - :- public(suffix/2). - :- mode(suffix(?list, +list), zero_or_more). - :- info(suffix/2, [comment is 'Suffix is a suffix of List.', argnames is ['Suffix', 'List']]). - :- end_protocol. diff --git a/Logtalk/library/loop.lgt b/Logtalk/library/loop.lgt index cf4cd9222..978d81de9 100644 --- a/Logtalk/library/loop.lgt +++ b/Logtalk/library/loop.lgt @@ -2,74 +2,59 @@ :- object(loop, implements(loopp)). - :- info([ version is 1.1, author is 'Paulo Moura', date is 2006/9/17, comment is 'Loop control structures predicates.']). + :- meta_predicate(whiledo(::, ::)). + whiledo(Condition, Action) :- + ( call(Condition) -> + \+ \+ call(Action), + whiledo(Condition, Action) + ; true + ). :- meta_predicate(dowhile(::, ::)). - - :- meta_predicate(forto(*, *, ::)). - - :- meta_predicate(forto(*, *, *, ::)). - - :- meta_predicate(fordownto(*, *, ::)). - - :- meta_predicate(fordownto(*, *, *, ::)). - - :- meta_predicate(whiledo(::, ::)). - - dowhile(Action, Condition) :- \+ \+ call(Action), whiledo(Condition, Action). - - whiledo(Condition, Action) :- - call(Condition) -> - \+ \+ call(Action), - whiledo(Condition, Action) - ; - true. - - + :- meta_predicate(forto(*, *, ::)). forto(First, Last, Call) :- - First =< Last -> + ( First =< Last -> \+ \+ call(Call), Next is First + 1, forto(Next, Last, Call) - ; - true. - + ; true + ). + :- meta_predicate(forto(*, *, *, ::)). forto(Count, First, Last, Call) :- - First =< Last -> + ( First =< Last -> \+ \+ (Count = First, call(Call)), Next is First + 1, forto(Count, Next, Last, Call) - ; - true. - + ; true + ). + :- meta_predicate(fordownto(*, *, ::)). fordownto(First, Last, Call) :- - First >= Last -> + ( First >= Last -> \+ \+ call(Call), Next is First - 1, fordownto(Next, Last, Call) - ; - true. - + ; true + ). + :- meta_predicate(fordownto(*, *, *, ::)). fordownto(Count, First, Last, Call) :- - First >= Last -> + ( First >= Last -> \+ \+ (Count = First, call(Call)), Next is First - 1, fordownto(Count, Next, Last, Call) - ; - true. - + ; true + ). :- end_object. diff --git a/Logtalk/library/loopp.lgt b/Logtalk/library/loopp.lgt index ead548343..1f629a4ee 100644 --- a/Logtalk/library/loopp.lgt +++ b/Logtalk/library/loopp.lgt @@ -1,72 +1,52 @@ :- protocol(loopp). - :- info([ version is 1.1, author is 'Paulo Moura', date is 2006/9/17, comment is 'Loop control structures protocol.']). - :- public(dowhile/2). :- meta_predicate(dowhile(::, ::)). - :- mode(dowhile(+callable, @callable), zero_or_one). - :- info(dowhile/2, [ comment is 'Do Action while Condition is true.', argnames is ['Action', 'Condition']]). - :- public(forto/3). :- meta_predicate(forto(*, *, ::)). - :- mode(forto(+integer, +integer, @callable), zero_or_one). - :- info(forto/3, [ comment is 'Counting from First to Last do Call.', argnames is ['First', 'Last', 'Call']]). - :- public(forto/4). :- meta_predicate(forto(*, *, *, ::)). - :- mode(forto(-integer, +integer, +integer, @callable), zero_or_one). - :- info(forto/4, [ comment is 'Do Call counting from First to Last and instantiating Count to each sucessive value.', argnames is ['Count', 'First', 'Last', 'Call']]). - :- public(fordownto/3). :- meta_predicate(fordownto(*, *, ::)). - :- mode(fordownto(+integer, +integer, @callable), zero_or_one). - :- info(fordownto/3, [ comment is 'Counting from First to Last do Call.', argnames is ['First', 'Last', 'Call']]). - :- public(fordownto/4). :- meta_predicate(fordownto(*, *, *, ::)). - :- mode(fordownto(-integer, +integer, +integer, @callable), zero_or_one). - :- info(fordownto/4, [ comment is 'Do Call counting from First to Last and instantiating Count to each sucessive value.', argnames is ['Count', 'First', 'Last', 'Call']]). - :- public(whiledo/2). :- meta_predicate(whiledo(::, ::)). - :- mode(whiledo(+callable, @callable), zero_or_one). - :- info(whiledo/2, [ comment is 'While Condition is true do Action.', argnames is ['Condition', 'Action']]). - :- end_protocol. diff --git a/Logtalk/library/metapredicates.notes b/Logtalk/library/metapredicates.notes index 82e8aa692..38c948e9e 100644 --- a/Logtalk/library/metapredicates.notes +++ b/Logtalk/library/metapredicates.notes @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load all entities in this group load the metapredicates_loader.lgt diff --git a/Logtalk/library/metapredicates_loader.lgt b/Logtalk/library/metapredicates_loader.lgt index e5dfcfedb..823cbfcb1 100644 --- a/Logtalk/library/metapredicates_loader.lgt +++ b/Logtalk/library/metapredicates_loader.lgt @@ -1,5 +1,3 @@ :- initialization( - logtalk_load([ - metap, meta, - loopp, loop])). + logtalk_load([metap, meta, loopp, loop], [reload(skip)])). diff --git a/Logtalk/library/monitor.lgt b/Logtalk/library/monitor.lgt index 16d08bff0..dceabb086 100644 --- a/Logtalk/library/monitor.lgt +++ b/Logtalk/library/monitor.lgt @@ -2,29 +2,23 @@ :- category(monitor, implements(monitorp)). - :- info([ version is 1.1, author is 'Paulo Moura', date is 2004/3/31, comment is 'Monitor predicates.']). - :- private(spy_point_/4). :- dynamic(spy_point_/4). - :- mode(spy_point_(?event, ?object, ?callable, ?object), zero_or_more). - :- info(spy_point_/4, [ comment is 'Stores current spy points.', argnames is ['Event', 'Object', 'Message', 'Sender']]). - monitor_activated :- self(Self), once(current_event(_, _, _, _, Self)). - activate_monitor :- self(Self), abolish_events(before, _, _, _, Self), @@ -33,32 +27,26 @@ ::spy_point_(Event, Object, Message, Sender), define_events(Event, Object, Message, Sender, Self)). - suspend_monitor :- self(Self), abolish_events(before, _, _, _, Self), abolish_events(after, _, _, _, Self). - reset_monitor :- self(Self), abolish_events(before, _, _, _, Self), abolish_events(after, _, _, _, Self), ::retractall(spy_point_(_, _, _, _)). - spy_point(Event, Object, Message, Sender) :- ::spy_point_(Event, Object, Message, Sender). - set_spy_point(Event, Object, Message, Sender) :- ::retractall(spy_point_(Event, Object, Message, Sender)), once((var(Event); Event = before; Event = after)), ::assertz(spy_point_(Event, Object, Message, Sender)). - del_spy_points(Event, Object, Message, Sender) :- ::retractall(spy_point_(Event, Object, Message, Sender)). - :- end_category. diff --git a/Logtalk/library/monitorp.lgt b/Logtalk/library/monitorp.lgt index a20a393f4..34b895315 100644 --- a/Logtalk/library/monitorp.lgt +++ b/Logtalk/library/monitorp.lgt @@ -1,71 +1,48 @@ :- protocol(monitorp). - :- info([ version is 1.0, author is 'Paulo Moura', date is 2000/7/24, comment is 'Monitor protocol.']). - :- public(monitor_activated/0). - :- mode(monitor_activated, zero_or_one). - :- info(monitor_activated/0, [ comment is 'True if monitor is currently active.']). - :- public(activate_monitor/0). - :- mode(activate_monitor, one). - :- info(activate_monitor/0, [ comment is 'Activates all spy points and start monitoring.']). - :- public(suspend_monitor/0). - :- mode(suspend_monitor, one). - :- info(suspend_monitor/0, [ comment is 'Suspends monitoring, deactivating all spy points.']). - :- public(reset_monitor/0). - :- mode(reset_monitor, one). - :- info(reset_monitor/0, [ comment is 'Resets monitor, deactivating and deleting all spy points.']). - :- public(spy_point/4). - :- mode(spy_point(?event, ?object, ?callable, ?object), zero_or_more). - :- info(spy_point/4, [ comment is 'Current spy point.', argnames is ['Event', 'Object', 'Message', 'Sender']]). - :- public(set_spy_point/4). - :- mode(set_spy_point(?event, ?object, ?callable, ?object), one). - :- info(set_spy_point/4, [ comment is 'Sets a spy point.', argnames is ['Event', 'Object', 'Message', 'Sender']]). - :- public(del_spy_points/4). - :- mode(del_spy_points(@event, @object, @callable, @object), one). - :- info(del_spy_points/4, [ comment is 'Deletes all matching spy points.', argnames is ['Event', 'Object', 'Message', 'Sender']]). - :- end_protocol. diff --git a/Logtalk/library/natural.lgt b/Logtalk/library/natural.lgt index 6f46cda15..d87ef1148 100644 --- a/Logtalk/library/natural.lgt +++ b/Logtalk/library/natural.lgt @@ -2,23 +2,19 @@ :- object(natural, extends(integer)). - :- info([ version is 1.0, author is 'Paulo Moura', date is 2000/7/24, comment is 'Natural numbers data type predicates.']). - between(Lower, Upper, Integer) :- integer(Lower), Lower > 0, ^^between(Lower, Upper, Integer). - valid(Natural) :- integer(Natural), Natural > 0. - :- end_object. diff --git a/Logtalk/library/number.lgt b/Logtalk/library/number.lgt index eb4bbdb6e..267d4011d 100644 --- a/Logtalk/library/number.lgt +++ b/Logtalk/library/number.lgt @@ -2,16 +2,13 @@ :- object(number, extends(atomic)). - :- info([ version is 1.0, author is 'Paulo Moura', date is 2000/7/24, comment is 'Number data type predicates.']). - valid(Number) :- number(Number). - :- end_object. diff --git a/Logtalk/library/numberlist.lgt b/Logtalk/library/numberlist.lgt index 55e03e980..3ed4a9788 100644 --- a/Logtalk/library/numberlist.lgt +++ b/Logtalk/library/numberlist.lgt @@ -3,74 +3,66 @@ implements(numberlistp), extends(list)). - :- info([ - version is 1.0, + version is 1.1, author is 'Paulo Moura', - date is 2000/7/24, + date is 2007/4/20, comment is 'List of numbers predicates.']). - - average([], 0). - + average([], 0.0). average([N| Ns], Average) :- - average([N| Ns], 0, 0, Average). - + average(Ns, 1, N, Average). average([], Length, Sum, Average) :- Average is Sum / Length. - average([N| Ns], Lacc, Sacc, Average) :- Lacc2 is Lacc + 1, Sacc2 is Sacc + N, average(Ns, Lacc2, Sacc2, Average). - min([N| Ns], Min) :- min(Ns, N, Min). min([], Min, Min). - min([N| Ns], Aux, Min) :- - N < Aux -> + ( N < Aux -> min(Ns, N, Min) - ; - min(Ns, Aux, Min). - + ; min(Ns, Aux, Min) + ). max([N| Ns], Max) :- max(Ns, N, Max). max([], Max, Max). - max([N| Ns], Aux, Max) :- - N > Aux -> + ( N > Aux -> max(Ns, N, Max) - ; - max(Ns, Aux, Max). + ; max(Ns, Aux, Max) + ). + product(List, Product) :- + product(List, 1, Product). + + product([], Product, Product). + product([N| Ns], Acc, Product) :- + Acc2 is Acc * N, + product(Ns, Acc2, Product). sum(List, Sum) :- sum(List, 0, Sum). - sum([], Sum, Sum). - sum([N| Ns], Acc, Sum) :- Acc2 is Acc + N, sum(Ns, Acc2, Sum). - valid(List) :- nonvar(List), \+ \+ valid2(List). - valid2([]). - valid2([Head| Tail]) :- number(Head), valid2(Tail). - :- end_object. diff --git a/Logtalk/library/numberlistp.lgt b/Logtalk/library/numberlistp.lgt index f6ad24480..b5216975c 100644 --- a/Logtalk/library/numberlistp.lgt +++ b/Logtalk/library/numberlistp.lgt @@ -1,30 +1,28 @@ :- protocol(numberlistp). - :- info([ - version is 1.0, + version is 1.1, author is 'Paulo Moura', - date is 2000/7/24, + date is 2007/4/20, comment is 'List of numbers protocol.']). + :- public(product/2). + :- mode(product(+list(number), ?number), zero_or_one). + :- info(product/2, + [comment is 'Calculates the product of all list values.', + argnames is ['List', 'Product']]). :- public(sum/2). - - :- mode(sum(+list, ?number), zero_or_one). - + :- mode(sum(+list(number), ?number), zero_or_one). :- info(sum/2, [comment is 'Calculates the sum of all list values.', argnames is ['List', 'Sum']]). - :- public(average/2). - - :- mode(average(+list, ?number), zero_or_one). - + :- mode(average(+list(number), ?float), zero_or_one). :- info(average/2, [comment is 'Calculates the average of a list of values.', argnames is ['List', 'Average']]). - :- end_protocol. diff --git a/Logtalk/library/proto_hierarchy.lgt b/Logtalk/library/proto_hierarchy.lgt index 016417048..d5da9c7b2 100644 --- a/Logtalk/library/proto_hierarchy.lgt +++ b/Logtalk/library/proto_hierarchy.lgt @@ -2,66 +2,53 @@ :- category(proto_hierarchy, implements(proto_hierarchyp)). - :- info([ version is 1.1, author is 'Paulo Moura', date is 2006/2/20, comment is 'Prototype hierarchy predicates.']). - parent(Parent) :- self(Self), extends_object(Self, Parent). - parents(Parents) :- self(Self), findall(Parent, extends_object(Self, Parent), Parents). - ancestor(Ancestor) :- self(Self), ancestor(Self, Ancestor). - ancestor(Self, Ancestor) :- extends_object(Self, Ancestor). - ancestor(Self, Ancestor) :- extends_object(Self, Parent), ancestor(Parent, Ancestor). - ancestors(Ancestors) :- self(Self), findall(Ancestor, ancestor(Self, Ancestor), Ancestors). - extension(Prototype) :- self(Self), extends_object(Prototype, Self). - extensions(Prototypes) :- self(Self), findall(Prototype, extends_object(Prototype, Self), Prototypes). - leaf(Leaf) :- self(Self), leaf(Self, Leaf). - leaf(Self, Leaf) :- extends_object(Leaf, Self), \+ extends_object(_, Leaf). - leaf(Self, Leaf) :- extends_object(Object, Self), leaf(Object, Leaf). - leaves(Leaves) :- self(Self), ( setof(Leaf, leaf(Self, Leaf), Leaves) -> @@ -69,24 +56,19 @@ ; Leaves = [] ). - descendant(Descendant) :- self(Self), descendant(Self, Descendant). - descendant(Self, Descendant) :- extends_object(Descendant, Self). - descendant(Self, Descendant) :- extends_object(Descendant, Self), \+ extends_object(Descendant, Self). - descendant(Self, Descendant) :- extends_object(Subclass, Self), descendant(Subclass, Descendant). - descendants(Descendants) :- self(Self), ( setof(Descendant, descendant(Self, Descendant), Descendants) -> @@ -94,5 +76,4 @@ ; Descendants = [] ). - :- end_category. diff --git a/Logtalk/library/queue.lgt b/Logtalk/library/queue.lgt index efcf7bb99..4e4d8805a 100644 --- a/Logtalk/library/queue.lgt +++ b/Logtalk/library/queue.lgt @@ -3,14 +3,12 @@ implements(queuep), extends(compound)). - :- info([ version is 1.0, author is 'Paulo Moura', date is 2000/7/24, comment is 'Queue predicates implemented using difference lists.']). - as_list(Queue-Back, List) :- Queue == Back -> List = [] @@ -19,70 +17,53 @@ Queue = [Head| Rest], as_list(Rest-Back, Tail). - empty(Front-Back) :- Front == Back. - head(Front-Back, Head) :- Front \== Back, Front = [Head| _]. - join(Element, Front-[Element| Back], Front-Back). - join_all([], Queue, Queue). - join_all([Head| Tail], Queue1, Queue3) :- join(Head, Queue1, Queue2), join_all(Tail, Queue2, Queue3). - jump(Element, Front-Back, [Element| Front]-Back). - jump_all([], Queue, Queue). - jump_all([Head| Tail], Queue1, Queue3) :- jump(Head, Queue1, Queue2), jump_all(Tail, Queue2, Queue3). - length(Front-Back, Length) :- length(Front, Back, 0, N), Length = N. - length(Front, Back, N, N) :- Front == Back, !. - length([_|Front], Back, K, N) :- L is K+1, length(Front, Back, L, N). - new(Back-Back). - serve(OldFront-Back, Head, NewFront-Back) :- OldFront \== Back, OldFront = [Head| NewFront]. - valid(Queue) :- nonvar(Queue), valid2(Queue). - valid2(Queue-Back) :- Queue == Back, !. - valid2(Queue-Back) :- nonvar(Queue), Queue = [_| Tail], valid2(Tail-Back). - :- end_object. diff --git a/Logtalk/library/queuep.lgt b/Logtalk/library/queuep.lgt index 9876cea62..10f33c4df 100644 --- a/Logtalk/library/queuep.lgt +++ b/Logtalk/library/queuep.lgt @@ -1,93 +1,64 @@ :- protocol(queuep). - :- info([ version is 1.0, author is 'Paulo Moura', date is 2000/7/24, comment is 'Queue protocol.']). - :- public(empty/1). - :- mode(empty(@queue), zero_or_one). - :- info(empty/1, [ comment is 'True if the queue is empty.', argnames is ['Queue']]). - :- public(head/2). - :- mode(head(+queue, ?term), zero_or_one). - :- info(head/2, [ comment is 'Unifies Head with the first element of the queue.', argnames is ['Queue', 'Head']]). - :- public(join/3). - :- mode(join(@term, +queue, -queue), zero_or_one). - :- info(join/3, [ comment is 'Adds the new element at the end of the queue.', argnames is ['Element', 'Queue_in', 'Queue_out']]). - :- public(join_all/3). - :- mode(join_all(+list, +queue, -queue), zero_or_one). - :- info(join_all/3, [ comment is 'Adds the new elements at the end of the queue. The elements are added in the same order that they appear in the list.', argnames is ['List', 'Queue_in', 'Queue_out']]). - :- public(jump/3). - :- mode(jump(@term, +queue, -queue), zero_or_one). - :- info(jump/3, [ comment is 'Adds the new element at the front of the queue.', argnames is ['Element', 'Queue_in', 'Queue_out']]). - :- public(jump_all/3). - :- mode(jump_all(+list, +queue, -queue), zero_or_one). - :- info(jump_all/3, [ comment is 'Adds the new elements at the front of the queue. The elements are added in the same order that they appear in the list.', argnames is ['Element', 'Queue_in', 'Queue_out']]). - :- public(length/2). - :- mode(length(+queue, ?integer), zero_or_one). - :- info(length/2, [comment is 'Queue length.', argnames is ['Queue', 'Length']]). - :- public(serve/3). - :- mode(serve(+queue, ?term, -queue), zero_or_one). - :- info(serve/3, [ comment is 'Removes the first element of the queue for service.', argnames is ['Queue_in', 'Head', 'Queue_out']]). - :- public(as_list/2). - :- mode(as_list(+queue, -list), one). - :- info(as_list/2, [comment is 'Converts a queue to a list.', argnames is ['Queue', 'List']]). - :- end_protocol. diff --git a/Logtalk/library/random.notes b/Logtalk/library/random.notes index 86c63efdc..3b34121f9 100644 --- a/Logtalk/library/random.notes +++ b/Logtalk/library/random.notes @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load all entities in this library load the random_loader.lgt utility diff --git a/Logtalk/library/random_loader.lgt b/Logtalk/library/random_loader.lgt index 1753fbac1..1b69ea634 100644 --- a/Logtalk/library/random_loader.lgt +++ b/Logtalk/library/random_loader.lgt @@ -1,3 +1,3 @@ :- initialization( - logtalk_load([randomp, random])). + logtalk_load([randomp, random], [reload(skip)])). diff --git a/Logtalk/library/randomp.lgt b/Logtalk/library/randomp.lgt index e071c6291..34443739c 100644 --- a/Logtalk/library/randomp.lgt +++ b/Logtalk/library/randomp.lgt @@ -1,68 +1,48 @@ :- protocol(randomp). - :- info([ version is 1.0, author is 'Paulo Moura', date is 2000/7/24, comment is 'Random number generator protocol.']). - :- public(random/1). - :- mode(random(-float), one). - :- info(random/1, [ comment is 'Returns a new random float value in the interval [0.0, 1.0[.', argnames is ['Random']]). - :- public(random/3). - :- mode(random(+integer, +integer, -integer), zero_or_one). :- mode(random(+float, +float, -float), zero_or_one). - :- info(random/3, [ comment is 'Returns a new random value in the interval [Lower, Upper[.', argnames is ['Lower', 'Upper', 'Random']]). - :- public(randseq/4). - :- mode(randseq(+integer, +integer, +integer, -list), zero_or_one). :- mode(randseq(+integer, +float, +float, -list), zero_or_one). - :- info(randseq/4, [ comment is 'Returns a list of Length random values in the interval [Lower, Upper[.', argnames is ['Length', 'Lower', 'Upper', 'List']]). - :- public(randset/4). - :- mode(randset(+integer, +integer, +integer, -list), zero_or_one). :- mode(randset(+integer, +float, +float, -list), zero_or_one). - :- info(randset/4, [ comment is 'Returns an ordered set of Length random values in the interval [Lower, Upper[.', argnames is ['Length', 'Lower', 'Upper', 'Set']]). - :- public(reset_seed/0). - :- mode(reset_seed, one). - :- info(reset_seed/0, [ comment is 'Resets the random seed to its default value.']). - :- public(set_seed/1). - :- mode(set_seed(+integer), zero_or_one). - :- info(set_seed/1, [ comment is 'Sets the random seed to the given value.', argnames is ['Seed']]). - :- end_protocol. diff --git a/Logtalk/library/set.lgt b/Logtalk/library/set.lgt index 459f7d8d8..0b1a4002f 100644 --- a/Logtalk/library/set.lgt +++ b/Logtalk/library/set.lgt @@ -3,89 +3,65 @@ implements(setp), extends(compound)). - :- info([ version is 1.0, author is 'Paulo Moura', date is 2000/7/24, comment is 'Set predicates implemented using ordered lists. Uses ==/2 for element comparison and standard term ordering.']). - delete([], _, []). - delete([Head| Tail], Element, Remaining) :- compare(Order, Head, Element), delete(Order, Head, Tail, Element, Remaining). delete(=, _, Tail, _, Tail). - delete(<, Head, Tail, Element, [Head| Tail2]) :- delete(Tail, Element, Tail2). - delete(>, _, Tail, _, Tail). - disjoint([], _) :- !. - disjoint(_, []) :- !. - disjoint([Head1| Tail1], [Head2| Tail2]) :- compare(Order, Head1, Head2), disjoint(Order, Head1, Tail1, Head2, Tail2). - disjoint(<, _, Tail1, Head2, Tail2) :- disjoint(Tail1, [Head2| Tail2]). - disjoint(>, Head1, Tail1, _, Tail2) :- disjoint([Head1| Tail1], Tail2). - equal(Set1, Set2) :- Set1 == Set2. - empty(Set) :- Set == []. - insert([], Element, [Element]). - insert([Head| Tail], Element, Set) :- compare(Order, Head, Element), insert(Order, Head, Tail, Element, Set). - insert(<, Head, Tail, Element, [Head| Set]) :- insert(Tail, Element, Set). - insert(=, Head, Tail, _, [Head| Tail]). - insert(>, Head, Tail, Element, [Element, Head| Tail]). - insert_all([], Set, Set). - insert_all([Head| Tail], Set1, Set3) :- insert(Set1, Head, Set2), insert_all(Tail, Set2, Set3). - intersect([Head1| Tail1], [Head2| Tail2]) :- compare(Order, Head1, Head2), intersect(Order, Head1, Tail1, Head2, Tail2). intersect(=, _, _, _, _). - intersect(<, _, Tail1, Head2, Tail2) :- intersect(Tail1, [Head2| Tail2]). - intersect(>, Head1, Tail1, _, Tail2) :- intersect([Head1| Tail1], Tail2). - intersection(_, [], []) :- !. - intersection([], _, []) :- !. intersection([Head1| Tail1], [Head2| Tail2], Intersection) :- @@ -94,170 +70,124 @@ intersection(=, Head, Tail1, _, Tail2, [Head| Intersection]) :- intersection(Tail1, Tail2, Intersection). - intersection(<, _, Tail1, Head2, Tail2, Intersection) :- intersection(Tail1, [Head2| Tail2], Intersection). - intersection(>, Head1, Tail1, _, Tail2, Intersection) :- intersection([Head1|Tail1], Tail2, Intersection). - length(Set, Length) :- length(Set, 0, Length). - length([], Length, Length). - length([_| Set], Acc, Length) :- Acc2 is Acc + 1, length(Set, Acc2, Length). - member(Element, Set) :- - var(Element) -> + ( var(Element) -> member_var(Element, Set) - ; - member_nonvar(Element, Set). - + ; member_nonvar(Element, Set) + ). member_var(Element, [Element| _]). - member_var(Element, [_| Set]) :- member_var(Element, Set). - member_nonvar(Element, [Head| Tail]):- compare(Order, Element, Head), member_nonvar(Order, Element, Tail). member_nonvar(=, _, _). - member_nonvar(>, Element, [Head| Tail]) :- compare(Order, Element, Head), member_nonvar(Order, Element, Tail). - new([]). - powerset(Set, PowerSet):- reverse(Set, RSet), powerset_1(RSet, [[]], PowerSet). - powerset_1([], PowerSet, PowerSet). - powerset_1([X| Xs], Yss0, Yss):- powerset_2(Yss0, X, Yss1), powerset_1(Xs, Yss1, Yss). - powerset_2([], _, []). - powerset_2([Zs| Zss], X, [Zs, [X| Zs]| Yss]):- powerset_2(Zss, X, Yss). - reverse(List, Reversed) :- reverse(List, [], Reversed). - reverse([], Reversed, Reversed). - reverse([Head| Tail], List, Reversed) :- reverse(Tail, [Head| List], Reversed). - select(Head, [Head| Tail], Tail). - select(Head, [Head2| Tail], [Head2| Tail2]) :- select(Head, Tail, Tail2). - subset([], _) :- !. - subset([Head1| Tail1], [Head2| Tail2]) :- compare(Order, Head1, Head2), subset(Order, Head1, Tail1, Head2, Tail2). - subset(=, _, Tail1, _, Tail2) :- subset(Tail1, Tail2). - subset(>, Head1, Tail1, _, Tail2) :- subset([Head1| Tail1], Tail2). - subtract(Set, [], Set) :- !. - subtract([], _, []) :- !. subtract([Head1| Tail1], [Head2| Tail2], Difference) :- compare(Order, Head1, Head2), subtract(Order, Head1, Tail1, Head2, Tail2, Difference). - subtract(=, _, Tail1, _, Tail2, Difference) :- subtract(Tail1, Tail2, Difference). - subtract(<, Head1, Tail1, Head2, Tail2, [Head1| Difference]) :- subtract(Tail1, [Head2| Tail2], Difference). - subtract(>, Head1, Tail1, _, Tail2, Difference) :- subtract([Head1| Tail1], Tail2, Difference). - symdiff(Set, [], Set) :- !. - symdiff([], Set, Set) :- !. - symdiff([Head1| Tail1], [Head2| Tail2], Difference) :- compare(Order, Head1, Head2), symdiff(Order, Head1, Tail1, Head2, Tail2, Difference). - symdiff(=, _, Tail1, _, Tail2, Difference) :- symdiff(Tail1, Tail2, Difference). - symdiff(<, Head1, Tail1, Head2, Tail2, [Head1| Difference]) :- symdiff(Tail1, [Head2| Tail2], Difference). - symdiff(>, Head1, Tail1, Head2, Tail2, [Head2| Difference]) :- symdiff([Head1| Tail1], Tail2, Difference). - union(Set, [], Set) :- !. - union([], Set, Set) :- !. - union([Head1| Tail1], [Head2| Tail2], Union) :- compare(Order, Head1, Head2), union(Order, Head1, Tail1, Head2, Tail2, Union). - union(=, Head, Tail1, _, Tail2, [Head| Union]) :- union(Tail1, Tail2, Union). - union(<, Head1, Tail1, Head2, Tail2, [Head1| Union]) :- union(Tail1, [Head2| Tail2], Union). - union(>, Head1, Tail1, Head2, Tail2, [Head2| Union]) :- union([Head1| Tail1], Tail2, Union). - valid(Set) :- nonvar(Set), valid2(Set). valid2([]) :- !. - valid2([_]) :- !. - valid2([Element1, Element2| Set]) :- Element1 @< Element2, valid2([Element2| Set]). - :- end_object. diff --git a/Logtalk/library/setp.lgt b/Logtalk/library/setp.lgt index 5859dd99d..76fe30caa 100644 --- a/Logtalk/library/setp.lgt +++ b/Logtalk/library/setp.lgt @@ -1,157 +1,107 @@ :- protocol(setp). - :- info([ version is 1.0, author is 'Paulo Moura', date is 2000/7/24, comment is 'Set protocol.']). - :- public(delete/3). - :- mode(delete(+set, @term, ?set), one). - :- info(delete/3, [comment is 'Deletes an element from a set returning the set of remaining elements.', argnames is ['Set', 'Element', 'Remaining']]). - :- public(disjoint/2). - :- mode(disjoint(+set, +set), zero_or_one). - :- info(disjoint/2, [ comment is 'True if the two sets have no element in common.', argnames is ['Set1', 'Set2']]). - :- public(equal/2). - :- mode(equal(+set, +set), zero_or_one). - :- info(equal/2, [ comment is 'True if the two sets are equal.', argnames is ['Set1', 'Set2']]). - :- public(empty/1). - :- mode(empty(+set), zero_or_one). - :- info(empty/1, [ comment is 'True if the set is empty.', argnames is ['Set']]). - :- public(insert/3). - :- mode(insert(+set, +term, ?set), one). - :- info(insert/3, [ comment is 'Inserts an element in a set, returning the resulting set.', argnames is ['In', 'Element', 'Out']]). - :- public(insert_all/3). - :- mode(insert_all(+list, +set, ?set), one). - :- info(insert_all/3, [ comment is 'Inserts a list of elemnts in a set, returning the resulting set.', argnames is ['List', 'In', 'Out']]). - :- public(intersect/2). - :- mode(intersect(+set, +set), zero_or_one). - :- info(intersect/2, [ comment is 'True if the two sets have at least one element in common.', argnames is ['Set1', 'Set2']]). - :- public(intersection/3). - :- mode(intersection(+set, +set, ?set), zero_or_one). - :- info(intersection/3, [ comment is 'Returns the intersection of Set1 and Set2.', argnames is ['Set1', 'Set2', 'Intersection']]). - :- public(length/2). - :- mode(length(+set, ?integer), zero_or_one). - :- info(length/2, [comment is 'Number of set elements.', argnames is ['Set', 'Length']]). - :- public(member/2). - :- mode(member(+term, +set), zero_or_one). :- mode(member(-term, +set), zero_or_more). - :- info(member/2, [comment is 'Element is a member of set Set.', argnames is ['Element', 'Set']]). - :- public(powerset/2). - :- mode(powerset(+set, -list), one). - :- info(powerset/2, [comment is 'Returns the power set of a set, represented as a list of sets.', argnames is ['Set', 'Powerset']]). - :- public(select/3). - :- mode(select(?term, +set, ?set), zero_or_more). - :- info(select/3, [comment is 'Selects an element from a set, returning the set of remaining elements.', argnames is ['Element', 'Set', 'Remaining']]). - :- public(subset/2). - :- mode(subset(+set, +set), zero_or_one). - :- info(subset/2, [ comment is 'True if Subset is a subset of Set.', argnames is ['Subset', 'Set']]). - :- public(subtract/3). - :- mode(subtract(+set, +set, ?set), zero_or_one). - :- info(subtract/3, [ comment is 'True when Difference contains all and only the elements of Set1 which are not also in Set2.', argnames is ['Set1', 'Set2', 'Difference']]). - :- public(symdiff/3). - :- mode(symdiff(+set, +set, ?set), zero_or_one). - :- info(symdiff/3, [ comment is 'True if Difference is the symmetric difference of Set1 and Set2.', argnames is ['Set1', 'Set2', 'Difference']]). - :- public(union/3). - :- mode(union(+set, +set, ?set), zero_or_one). - :- info(union/3, [ comment is 'True if Union is the union of Set1 and Set2.', argnames is ['Set1', 'Set2', 'Union']]). - :- end_protocol. diff --git a/Logtalk/library/term.lgt b/Logtalk/library/term.lgt index c865b290f..a75a3accf 100644 --- a/Logtalk/library/term.lgt +++ b/Logtalk/library/term.lgt @@ -2,23 +2,45 @@ :- object(term, implements(termp)). - :- info([ - version is 1.0, + version is 1.1, author is 'Paulo Moura', - date is 2000/7/24, - comment is 'Prolog term predicates.']). + date is 2007/4/3, + comment is 'Prolog term utility predicates.']). + depth(Term, Depth) :- + depth(Term, 0, 0, Depth). + + depth(Var, Acc, MaxSoFar, Depth) :- + var(Var), + !, + ( Acc > MaxSoFar -> + Depth = Acc + ; Depth = MaxSoFar + ). + depth(Atomic, Acc, MaxSoFar, Depth) :- + atomic(Atomic), + !, + ( Acc > MaxSoFar -> + Depth = Acc + ; Depth = MaxSoFar + ). + depth([Arg| Args], Acc, MaxSoFar, Depth) :- + !, + depth(Arg, Acc, MaxSoFar, ArgDepth), + depth(Args, Acc, ArgDepth, Depth). + depth(Term, Acc, MaxSoFar, Depth) :- + Acc2 is Acc + 1, + Term =.. [_| Args], + depth(Args, Acc2, MaxSoFar, Depth). ground(Term) :- nonvar(Term), functor(Term, _, Arity), ground(Arity, Term). - ground(0, _) :- !. - ground(N, Term) :- N > 0, arg(N, Term, Arg), @@ -26,39 +48,34 @@ N2 is N - 1, ground(N2, Term). - occurs(Var, Term) :- - var(Term) -> + ( var(Term) -> Var == Term - ; - functor(Term, _, Arity), - occurs(Arity, Var, Term). - + ; functor(Term, _, Arity), + occurs(Arity, Var, Term) + ). occurs(N, Var, Term) :- compound(Term), arg(N, Term, Arg), occurs(Var, Arg), !. - occurs(N, Var, Term) :- N > 1, N2 is N - 1, occurs(N2, Var, Term). - subsumes(General, Specific) :- vars(Specific, Vars), subsumes(General, Specific, Vars). - subsumes(General, Specific, Vars) :- var(General), !, - (var_member_chk(General, Vars) -> + ( var_member_chk(General, Vars) -> General == Specific - ; - General = Specific). + ; General = Specific + ). subsumes(General, Specific, Vars) :- nonvar(Specific), @@ -66,9 +83,8 @@ functor(Specific, Functor, Arity), subsumes(Arity, General, Specific, Vars). - - subsumes(0, _, _, _) :- !. - + subsumes(0, _, _, _) :- + !. subsumes(N, General, Specific, Vars) :- arg(N, General, GenArg), arg(N, Specific, SpeArg), @@ -76,56 +92,49 @@ M is N-1, !, subsumes(M, General, Specific, Vars). - var_member_chk(Var, [Head| Tail]) :- - Var == Head -> + ( Var == Head -> true - ; - var_member_chk(Var, Tail). - + ; var_member_chk(Var, Tail) + ). subterm(Term, Term). - subterm(Sub, Term) :- nonvar(Term), functor(Term, _, N), subterm(N, Sub, Term). - subterm(N, Sub, Term) :- compound(Term), arg(N, Term, Arg), subterm(Sub, Arg). - subterm(N, Sub, Term) :- N > 1, M is N-1, subterm(M, Sub, Term). - valid(_). + variant(Term1, Term2) :- + \+ \+ subsumes(Term1, Term2), + \+ \+ subsumes(Term2, Term1). vars(Term, Vars) :- vars(Term, [], Vars). - vars(Term, Acc, Vars) :- - var(Term) -> - (var_member_chk(Term, Acc) -> + ( var(Term) -> + ( var_member_chk(Term, Acc) -> Vars = Acc - ; - Vars = [Term| Acc]) - ; - Term =.. [_| Args], - var_list(Args, Acc, Vars). - + ; Vars = [Term| Acc] + ) + ; Term =.. [_| Args], + var_list(Args, Acc, Vars) + ). var_list([], Vars, Vars). - var_list([Term| Terms], Acc, Vars) :- vars(Term, Acc, Acc2), var_list(Terms, Acc2, Vars). - :- end_object. diff --git a/Logtalk/library/termp.lgt b/Logtalk/library/termp.lgt index e377c60c3..191297963 100644 --- a/Logtalk/library/termp.lgt +++ b/Logtalk/library/termp.lgt @@ -1,75 +1,64 @@ :- protocol(termp). - :- info([ - version is 1.0, + version is 1.1, author is 'Paulo Moura', - date is 2000/7/24, - comment is 'Prolog terms protocol.']). + date is 2007/4/3, + comment is 'Prolog term utility predicates protocol.']). + :- public(depth/2). + :- mode(depth(@term, ?integer), zero_or_one). + :- info(depth/2, [ + comment is 'True if the depth of Term is Depth. The depth of atomic terms is zero; the depth of a compound term is one plus the maximium depth of its sub-terms.', + argnames is ['Term', 'Depth']]). :- public(ground/1). - :- mode(ground(@term), zero_or_one). - :- info(ground/1, [ comment is 'True if the argument is ground.', argnames is ['Term']]). - :- public(new/1). - :- mode(new(-nonvar), zero_or_one). - :- info(new/1, [ comment is 'Creates a new term instance (if meaningful).', argnames is ['Term']]). - :- public(occurs/2). - :- mode(occurs(@var, @term), zero_or_one). - :- info(occurs/2, [ comment is 'True if the variable occurs in the term.', argnames is ['Variable', 'Term']]). - :- public(subsumes/2). - :- mode(subsumes(@term, @term), zero_or_one). - :- info(subsumes/2, [ comment is 'The first term subsumes the second term.', argnames is ['General', 'Specific']]). - :- public(subterm/2). - :- mode(subterm(?term, +term), zero_or_more). - :- info(subterm/2, [ comment is 'The first term is a subterm of the second term.', argnames is ['Subterm', 'Term']]). - :- public(valid/1). - :- mode(valid(@nonvar), zero_or_one). - :- info(valid/1, [ comment is 'Term is valid.', argnames is ['Term']]). + :- public(variant/2). + :- mode(variant(@term, @term), zero_or_one). + :- info(variant/2, [ + comment is 'Each term is a variant of the other (i.e. they are structurally equivalent).', + argnames is ['Term1', 'Term2']]). :- public(vars/2). - :- mode(vars(@term, -list), one). - :- info(vars/2, [ comment is 'Returns a list of all term variables.', argnames is ['Term', 'List']]). - :- end_protocol. diff --git a/Logtalk/library/time.lgt b/Logtalk/library/time.lgt index 69a1b241a..265de01fc 100644 --- a/Logtalk/library/time.lgt +++ b/Logtalk/library/time.lgt @@ -2,26 +2,21 @@ :- object(time, implements(timep)). - :- info([ version is 1.0, author is 'Paulo Moura', date is 2000/7/24, comment is 'Time predicates.']). - now(Hours, Mins, Secs) :- {'$lgt_current_time'(Hours, Mins, Secs)}. - cpu_time(Seconds) :- {'$lgt_cpu_time'(Seconds)}. - valid(Hours, Mins, Secs) :- integer(Hours), Hours >= 0, integer(Mins), Mins >= 0, Mins =< 59, integer(Secs), Secs >= 0, Secs =< 59. - :- end_object. diff --git a/Logtalk/library/timep.lgt b/Logtalk/library/timep.lgt index bcdd4a681..ea345e498 100644 --- a/Logtalk/library/timep.lgt +++ b/Logtalk/library/timep.lgt @@ -1,39 +1,28 @@ :- protocol(timep). - :- info([ version is 1.0, author is 'Paulo Moura', date is 2000/7/24, comment is 'Time protocol.']). - :- public(now/3). - :- mode(now(-integer, -integer, -integer), one). - :- info(now/3, [ comment is 'Returns current time.', argnames is ['Hours', 'Mins', 'Secs']]). - :- public(cpu_time/1). - :- mode(cpu_time(-number), one). - :- info(cpu_time/1, [comment is 'Returns the current cpu time.', argnames is ['Time']]). - :- public(valid/3). - :- mode(valid(+integer, +integer, +integer), zero_or_one). - :- info(valid/3, [ comment is 'True if the arguments represent a valid time value.', argnames is ['Hours', 'Mins', 'Secs']]). - :- end_protocol. diff --git a/Logtalk/library/types.notes b/Logtalk/library/types.notes index 44dfb24c2..04c0c6565 100644 --- a/Logtalk/library/types.notes +++ b/Logtalk/library/types.notes @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To load all entities in this group load the types_loader.lgt utility diff --git a/Logtalk/library/types_loader.lgt b/Logtalk/library/types_loader.lgt index 4bf878fe3..cc6000c70 100644 --- a/Logtalk/library/types_loader.lgt +++ b/Logtalk/library/types_loader.lgt @@ -13,4 +13,4 @@ queuep, queue, dictionaryp, bintree, setp, set, set1, - comparingp])). + comparingp], [reload(skip)])). diff --git a/Logtalk/library/varlist.lgt b/Logtalk/library/varlist.lgt index 802427da0..6c9b0bc11 100644 --- a/Logtalk/library/varlist.lgt +++ b/Logtalk/library/varlist.lgt @@ -2,45 +2,36 @@ :- object(varlist, extends(list)). - :- info([ version is 1.0, author is 'Paulo Moura', date is 2000/7/24, comment is 'List of variables predicates.']). - member(Element, [Head| _]) :- Element == Head. - member(Element, [_| Tail]) :- member(Element, Tail). memberchk(Element, [Head| Tail]) :- - Element == Head -> + ( Element == Head -> true - ; - memberchk(Element, Tail). - + ; memberchk(Element, Tail) + ). prefix([], _). - prefix([Head1| Tail1], [Head2| Tail2]) :- Head1 == Head2, prefix(Tail1, Tail2). - valid(List) :- nonvar(List), \+ \+ valid2(List). - valid2([]). - valid2([Head| Tail]) :- var(Head), valid2(Tail). - :- end_object. diff --git a/Logtalk/manuals/NOTES.txt b/Logtalk/manuals/NOTES.txt index 392d45f42..6c27bbed8 100644 --- a/Logtalk/manuals/NOTES.txt +++ b/Logtalk/manuals/NOTES.txt @@ -1,9 +1,9 @@ -================================================================= -Logtalk - Object oriented extension to Prolog -Release 2.29.5 +================================================================ +Logtalk - Open source object-oriented logic programming language +Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -================================================================= +================================================================ To consult the Logtalk documentation open the file "index.html" with a web browser. diff --git a/Logtalk/manuals/glossary.html b/Logtalk/manuals/glossary.html index c09e18e2d..5ba2798c3 100644 --- a/Logtalk/manuals/glossary.html +++ b/Logtalk/manuals/glossary.html @@ -23,170 +23,170 @@
-
ancestor
+
ancestor
A class or parent that contributes (via inheritance) to the definition of an object. For class-based hierarchies, the ancestors of an object are its class(es) and all the superclasses of its class(es). For prototype-based hierarchies, the ancestors of an object are its parent(s) and the ancestors of its parent(s).
-
category
+
category
A set of predicates directives and clauses that can be imported by any object.
-
class
+
class
An object that defines the common predicates of a set of objects (its instances).
-
abstract class
+
abstract class
A class that cannot be instantiated. Usually used to store common predicates that are inherited by other classes.
-
metaclass
+
metaclass
The class of a class, when we see it as an object. Metaclass instances are themselves classes. In a reflexive system any metaclass is also an object.
-
subclass
+
subclass
A class that is a specialization, direct or indirectly, of another class.
-
superclass
+
superclass
A class from which another class is a specialization (directly or indirectly via another class).
-
directive
-
A Prolog term that affects the interpretation of Prolog code. Directives are represented using the :-/1 prefix operator.
+
directive
+
A Prolog/Logtalk term that affects the interpretation of Prolog/Logtalk code. Directives are represented using the :-/1 prefix operator.
-
entity directive
+
entity directive
A directive that affects how Logtalk entities (objects, protocols, or categories) are used or compiled.
-
predicate directive
+
predicate directive
A directive that affects how predicates are called or compiled.
-
source file directive
+
source file directive
A directive that affects how a source file is compiled.
-
encapsulation
+
encapsulation
The hiding of an object implementation. This promotes software reuse by isolating users from implementation details.
-
entity
+
entity
Generic name for Logtalk compilation units: objects, categories, and protocols.
-
event
+
event
The sending of a message to an object. An event can be expressed as an ordered tuple: (Event, Object, Message, Sender). Logtalk distinguish between the sending of a message - before event - and the return of control to the sender - after event.
-
grammar rule
+
grammar rule
An alternative notation for predicates used to parse or generate sentences on some language. This notation hides the arguments used to pass the lists of tokens being processed, thus simplifying the representation of grammars. Grammar rules are represented using the infix operator -->/2 instead of the operator used on predicate clauses (:-/2).
-
grammar rule non-terminal
+
grammar rule non-terminal
A syntactic category of words of phrases. A non-terminal is identified by its name and number of arguments using the notation <name>//<nargs>.
-
grammar rule terminal
+
grammar rule terminal
A word or a basic symbol of a language.
-
identity
-
Property of an entity that distinguish it from every other entity. In Logtalk an entity identity can be an atom or a compound term. All Logtalk entities (objects, protocols, and categories) share the same name space.
+
identity
+
Property of an entity that distinguishes it from every other entity. In Logtalk, an object identity can be an atom or a compound term. Category and protocol identities must be atoms. All Logtalk entities (objects, protocols, and categories) share the same name space.
-
inheritance
+
inheritance
An object inherits predicate directives and clauses from other objects that it extends or specializes. If an object extends other object then we have a prototype-based inheritance. If an object specializes or instantiates another object we have a class-based inheritance.
-
private inheritance
+
private inheritance
All public and protected predicates are inherited as private predicates.
-
protected inheritance
+
protected inheritance
All public predicates are inherited as protected. No change for protected or private predicates.
-
public inheritance
+
public inheritance
All inherited predicates maintain the declared scope.
-
instance
+
instance
The same as object. This term is used when we want to emphasize that an object characteristics are defined by another object (its class).
-
instantiation
-
The process of creating a new class instance. In Logtalk does not necessarily implies dynamic creation of an object at runtime; an instance may also be defined as a static object in a source file.
+
instantiation
+
The process of creating a new class instance. In Logtalk, this does not necessarily implies dynamic creation of an object at runtime; an instance may also be defined as a static object in a source file.
-
library
+
library
A directory containing source files. The directory name is used as the library name.
-
message
+
message
A request for a service, sent to an object. In more logical terms, a message can be seen as a request for proof construction using an object's predicates.
-
metainterpreter
+
metainterpreter
A program capable of running other programs written in the same language.
-
method
+
method
Set of predicate clauses used to answer a message sent to an object. Logtalk uses dynamic binding to find which method to run to answer a message.
-
monitor
+
monitor
Any object that is notified when a spied event occurs. The spied events can be set by the monitor itself or by any other object.
-
object
-
An entity characterized by an identity and a set of predicate directives and clauses. In Logtalk objects can be either static or dynamic, like any other Prolog code.
+
object
+
An entity characterized by an identity and a set of predicate directives and clauses. Logtalk objects can be either static or dynamic. Logtalk objects can play the role of classes, instances, or prototypes.
-
parametric object
+
parametric object
An object whose name is a compound term containing free variables that can be used to parameterize the object predicates.
-
parametric object proxy
-
A compond term with the same functor and usually the same number of arguments as the identifier of a parametric object.
+
parametric object proxy
+
A compound term with the same functor and usually with the same number of arguments as the identifier of a parametric object.
-
parent
-
An object that is extended by another object.
+
parent
+
A prototype that is extended by another prototype.
-
predicate
+
predicate
Predicates describe what is true about the application domain. A predicate is identified by its name and number of arguments using the notation <name>/<nargs>.
-
local predicate
-
A predicate that is defined in an object (or in a category) but that is not listed in a scope directive. These predicates behave like private predicates but are invisible to the reflection methods.
+
local predicate
+
A predicate that is defined in an object (or in a category) but that is not listed in a scope directive. These predicates behave like private predicates but are invisible to the reflection built-in methods. Local predicates are usually auxiliary predicates, only relevant to the entity where they are defined.
-
meta-predicate
+
meta-predicate
A predicate where one of its arguments will be called as a goal. For instance, findall/3 and call/1 are Prolog built-ins meta-predicates.
-
private predicate
+
private predicate
A predicate that can only be called from the object that contains the scope directive.
-
protected predicate
+
protected predicate
A predicate that can only be called from the object containing the scope directive or from an object that inherits the predicate.
-
public predicate
+
public predicate
A predicate that can be called from any object.
-
visible predicate
-
A predicate that is declared for an object, a built-in method, or a Prolog or Logtalk built-in predicate.
+
visible predicate
+
A predicate that is declared for an object, a built-in method, or a Prolog/Logtalk built-in predicate.
-
profiler
+
profiler
A program that collects data about other program performance.
-
protocol
+
protocol
A set of predicates directives that can be implemented by an object or a category (or extended by another protocol).
-
prototype
+
prototype
A self-describing object that may extend or be extended by other objects.
-
self
+
self
The original object that received the message under processing.
-
sender
+
sender
An object that sends a message to other object.
-
specialization
+
specialization
A class is specialized by constructing a new class that inherit its predicates and possibly add new ones.
-
this
+
this
The object that contains the predicate clause under execution.
@@ -194,7 +194,7 @@
Copyright © Paulo Moura — Logtalk.org
- Last updated on: October 26, 2006 + Last updated on: April 14, 2007
 
diff --git a/Logtalk/manuals/index.html b/Logtalk/manuals/index.html index 7eec2a81e..cdb098a41 100644 --- a/Logtalk/manuals/index.html +++ b/Logtalk/manuals/index.html @@ -6,7 +6,7 @@ - Logtalk 2.29.5 Documentation + Logtalk 2.30.1 Documentation @@ -14,10 +14,10 @@
  - Logtalk 2.29.5 Documentation + Logtalk 2.30.1 Documentation
-

Logtalk 2.29.5 Documentation

+

Logtalk 2.30.1 Documentation

  • User Manual

    • @@ -31,7 +31,7 @@
    Copyright © Paulo Moura — Logtalk.org
    - Last updated on: March 24, 2007 + Last updated on: June 8, 2007
     
    diff --git a/Logtalk/manuals/migration/index.html b/Logtalk/manuals/migration/index.html index f5697c436..a07baa853 100644 --- a/Logtalk/manuals/migration/index.html +++ b/Logtalk/manuals/migration/index.html @@ -21,7 +21,7 @@

    Prolog Integration and Migration Guide

    -An application may include plain Prolog files, Prolog modules, and Logtalk objects. This is a perfect valid way of developing a complex application and, in some cases, it might be the most appropriated solution. Modules may be used when a simple encapsulation mechanism is adequate and Logtalk objects may be used when more powerful encapsulation, abstraction, and reuse features are needed. Logtalk supports the compilation of source files containing both plain Prolog and Prolog modules. This guide provides tips for helping integrating and migrating plain Prolog code and Prolog module code to Logtalk. Step-by-step instructions are provided for encapsulating plain Prolog code in objects, converting Prolog modules into objects, and compiling and reusing Prolog modules as objects from inside Logtalk. An interesting application of the techniques described in this guide is a solution for running a Prolog application which uses modules on a Prolog compiler with no module system. +An application may include plain Prolog files, Prolog modules, and Logtalk objects. This is a perfectly valid way of developing a complex application and, in some cases, it might be the most appropriated solution. Modules may be used for legacy code or when a simple encapsulation mechanism is adequate. Logtalk objects may be used when more powerful encapsulation, abstraction, and reuse features are needed. Logtalk supports the compilation of source files containing both plain Prolog and Prolog modules. This guide provides tips for helping integrating and migrating plain Prolog code and Prolog module code to Logtalk. Step-by-step instructions are provided for encapsulating plain Prolog code in objects, converting Prolog modules into objects, and compiling and reusing Prolog modules as objects from inside Logtalk. An interesting application of the techniques described in this guide is a solution for running a Prolog application which uses modules on a Prolog compiler with no module system.

    @@ -38,7 +38,22 @@ Logtalk source files may contain plain Prolog code intermixed with Logtalk code. Most applications consist of several plain Prolog source files, each one defining a few top predicates and auxiliary predicates that are not meant to be directly called by the user. Encapsulating plain Prolog code in objects allows us to make clear the different roles of each predicate, to hide implementation details, and to take advantage of other Logtalk features.

    -Encapsulating Prolog code using Logtalk objects is easy. First, for each source file, add an opening object directive, object/1, to the beginning of the file and an ending object directive, end_object/0, to end of the file. Choose an object name that reflects the purpose of source file code. Second, add public predicate directives for the top-level predicates that are used directly by the user or called from other source files. Third, we need to be able to call from inside an object a predicate defined in other source file/object. The easiest solution, which has the advantage of not implying any modification to the predicate clauses, is to use uses/2 directives. If your Prolog compiler supports cross-referencing tools, you may use them to help you make sure that all calls to predicates on other source files/objects are listed in the uses/2 directives. Compiling the resulting objects with the Logtalk portability flag set to warning may help you find calls to predicates defined on other converted source files. +Encapsulating Prolog code using Logtalk objects is easy. First, for each source file, add an opening object directive, object/1, to the beginning of the file and an ending object directive, end_object/0, to end of the file. Choose an object name that reflects the purpose of source file code (this is a good opportunity to reorganize your code if needed). Second, add public predicate directives for the top-level predicates that are used directly by the user or called from other source files. Third, we need to be able to call from inside an object a predicate defined in other source file/object. The easiest solution, which has the advantage of not implying any modification to the predicate clauses, is to use the uses/2 directive. If your Prolog compiler supports cross-referencing tools, you may use them to help you make sure that all calls to predicates on other source files/objects are listed in the uses/2 directives. Compiling the resulting objects with the Logtalk portability flag set to warning will help you locate calls to predicates defined on other converted source files. +

    + +

    Prolog multifile predicates

    + +

    +Prolog multifile predicates are used when clauses for the same predicate are spread among several source files. When encapsulating plain Prolog code that uses multifile predicates, is often the case that the clauses of the multifile predicates get spread between different objects and categories. When calling such predicates, you often want to use not only local clauses but also clauses stored in ancestor objects or imported. However, these inherited clauses are overridden by the local ones. For ancestor objects, use the super call operator, ^^/1, to get access to the overridden clauses. For imported categories, use the message to self operator, ::/1, to get access to the overridden clauses. For example, assume a multifile predicate, mp/2 with both local clauses and clauses imported from a category. The solution is to add a local clause giving access to the imported clauses by using the ::/1 operator: +

    +
    +mp(..., ...).    % local clauses
+...
+mp(A, B) :-      % imported clauses
+    ::mp(A, B).
+
    +

    +By adding the gateway clause after or before the local clauses, you can choose if the local clauses should be used before or after the overridden clauses.

    Converting Prolog modules into objects

    @@ -47,14 +62,14 @@ Encapsulating Prolog code using Logtalk objects is easy. First, for each source Converting Prolog modules into objects allows an application to run on a wider range of Prolog compilers, overcoming module compatibility problems. Not all Prolog compilers support a module system. Among those Prolog compilers which support a module system, the lack of standardization leads to several issues, specially with operators and meta-predicates. In addition, the conversion allows you to take advantage of Logtalk more powerful abstraction and reuse mechanisms such as separating interface from implementation.

    -Converting a Prolog module into a Logtalk object is easy. First, convert the module module/1 directive into an opening object directive, object/1, using the module name as the object name. For module/2 directives apply the same conversion and convert the list of exported predicates into Logtalk public predicate directives. Second, add a closing object directive, end_object/0, at the end of the module code. Third, convert any export/1 directives into public predicate directives. Fourth, convert any use_module/2 directives into Logtalk uses/2 directives. Any use_module/1 directives are also converted into Logtalk uses/2 directives but you will need to first find out which predicates your module uses from the specified modules. Fifth, convert any meta_predicate/1 directives into Logtalk meta-predicate/1 directives by replacing the module meta-argument indicator, :, into the Logtalk meta-predicate indicator, ::. Arguments which are not meta-arguments are represented by the * character. Compiling the resulting objects with the Logtalk portability flag set to warning may help you find calls to predicates defined on other converted modules. +Converting a Prolog module into an object is easy as long as the directives used in the module are supported by Logtalk (see below). First, convert the module module/1 directive into an opening object directive, object/1, using the module name as the object name. For module/2 directives apply the same conversion and convert the list of exported predicates into Logtalk public predicate directives. Second, add a closing object directive, end_object/0, at the end of the module code. Third, convert any export/1 directives into public predicate directives. Fourth, convert any use_module/2 directives into Logtalk uses/2 directives. Any use_module/1 directives are also converted into Logtalk uses/2 directives but you will need first to find out which predicates your module uses from the specified modules. Fifth, convert any meta_predicate/1 directives into Logtalk meta-predicate/1 directives by replacing the module meta-argument indicator, :, into the Logtalk meta-predicate indicator, ::. Arguments which are not meta-arguments are represented by the * character. Compile the resulting objects with the Logtalk portability flag set to warning to help you locate calls to predicates defined on other converted modules.

    Compiling Prolog modules as objects

    -An alternative to convert Prolog modules into objects is to just compile the modules as objects. When possible, this has the advantage of not implying any code changes. You may compile a Prolog module as an object by changing the source file name extension to .lgt and then using the logtalk_load/1-2 and logtalk_compile/1-2 predicates (set the Logtalk portability flag set to warning to help you catch any unnoticed cross-module predicate calls). This allows you to reuse existing module code as objects. However, there are some limitations that you should be aware. These limitations are a consequence of the lack of standardization of Prolog module systems. Currently, Logtalk supports the following module directives: +An alternative to convert Prolog modules into objects is to just compile the modules as objects. This has the advantage of not implying any code changes. However, this is only possible for modules containing only predicates clauses and Logtalk supported directives (see below). Assuming that is the case, you may compile a Prolog module as an object by changing the source file name extension to .lgt and then using the logtalk_load/1-2 and logtalk_compile/1-2 predicates (set the Logtalk portability flag set to warning to help you catch any unnoticed cross-module predicate calls). This allows you to reuse existing module code as objects. However, there are some limitations that you should be aware. These limitations are a consequence of the lack of standardization of Prolog module systems. Currently, Logtalk supports the following module directives:

    module/1
    @@ -78,7 +93,7 @@ When compiling modules as objects, you probably don't need event support turned

    Current limitations and workarounds

    -Note that use_module/1 directives are not currently supported. Therefore, this directives must be converted into use_module/2 directives by finding which predicates exported by the specified module are imported into the module containing the directive. Automating the conversion would imply loading the module without re-interpreting it as an object, which might not be what the user intended. Nevertheless, finding the names of the imported predicates is easy. First, comment out the use_module/1 directives and compile the file (making sure that the compiler flag misspelt is set to warning). Logtalk will print a warning with a list of predicates that are called but never defined. Second, use these list to replace the use_module/1 directives by use_module/2 directives. You should then be able to compile the modified Prolog module as an object. +Note that use_module/1 directives are not directly supported. Therefore, this directives must be converted into use_module/2 directives by finding which predicates exported by the specified module are imported into the module containing the directive. Automating the conversion would imply loading the module without re-interpreting it as an object, which might not be what the user intended. Nevertheless, finding the names of the imported predicates is easy. First, comment out the use_module/1 directives and compile the file (making sure that the compiler flag misspelt is set to warning). Logtalk will print a warning with a list of predicates that are called but never defined. Second, use these list to replace the use_module/1 directives by use_module/2 directives. You should then be able to compile the modified Prolog module as an object.

    Changing the extension of a module source file to .lgt in order to be able to compile it as Logtalk source file is not always feasible. An alternative is to create symbolic links or shortcuts for the module files using *.lgt names. In addition, for avoiding conflicts between the Logtalk generated Prolog files and the module files, create the links on a different directory and add a library entry for the directory using the predicate logtalk_library_path/2. For example, on a POSIX operating-system with library/*.pl module source file names, the links can be easily created by running the following bash shell commands: @@ -94,17 +109,25 @@ The symbolic links or shortcuts can also be easily created on most operating-sys

    Dealing with proprietary Prolog directives

    -Most Prolog compilers define proprietary, non-standard directives that may be used in both plain code and module code. Logtalk will generate compilation errors on source files containing these directives unless you first specify how the directives should be handled. Three actions are possible and can be specified, on a per-directive basis, on the Prolog configuration files: simply ignoring the directive, copying the directive as-is to the generated Prolog files, or rewriting the directive and compiling the resulting one. Each action is specified using, respectively, the predicates: '$lgt_ignore_pl_directive'/1, '$lgt_copy_pl_directive'/1, and '$lgt_rewrite_pl_directive'/2. For example, assume that a given Prolog compiler defines a comment/2 directive for predicates using the format: +Most Prolog compilers define proprietary, non-standard directives that may be used in both plain code and module code. Logtalk will generate compilation errors on source files containing these directives unless you first specify how the directives should be handled. Three actions are possible and can be specified, on a per-directive basis, on the Prolog configuration files: ignoring the directive (i.e. do not copy the directive, although a goal can be proved as a consequence), rewriting and copy the directive to the generated Prolog files, or rewriting and recompiling the resulting directive. Each action is specified using, respectively, the predicates: '$lgt_ignore_pl_directive'/1, '$lgt_rewrite_and_copy_pl_directive'/2, and '$lgt_rewrite_and_recompile_pl_directive'/2. For example, assume that a given Prolog compiler defines a comment/2 directive for predicates using the format: 

    :- comment(foo/2, "Brief description of the predicate").

    -We can rewrite this predicate into a Logtalk info/2 directive by defining a suitable clause for the '$lgt_rewrite_pl_directive'/2 predicate: +We can rewrite this predicate into a Logtalk info/2 directive by defining a suitable clause for the '$lgt_rewrite_and_recompile_pl_directive'/2 predicate:

    -
    '$lgt_rewrite_pl_directive'(comment(F/A, String), info(F/A, [comment is Atom])) :-
+
    '$lgt_rewrite_and_recompile_pl_directive'(comment(F/A, String), info(F/A, [comment is Atom])) :-
     atom_codes(Atom, String).
    
 
    
 This Logtalk feature can be used to allow compilation of legacy Prolog code without the need of changing the sources. When used, is advisable to set the portability/1 compiler flag to warning in order to more easily identify source files that are likely non-portable across Prolog compilers. 
 
    
+
    
+A second example, using the '$lgt_ignore_pl_directive'/1 hook predicate:
+
    
+
    '$lgt_ignore_pl_directive'(load_foreign_files(Files,Libs,InitRoutine)) :-
+    load_foreign_files(Files,Libs,InitRoutine).
    
+
    
+In this case, although the directive is not copied to the generated Prolog file, the foreign library files are loaded as a side-effect of calling the hook predicate.
+
    
 
 
 
    Calling Prolog module predicates using message sending
    
@@ -119,7 +142,7 @@ This feature is needed to properly support compilation of modules containing 
 	
    
 		Copyright © Paulo Moura — Logtalk.org
    	
-		Last updated on: March 5, 2007
+		Last updated on: June 6, 2007
 	
    
 	
    
 		glossary
    
diff --git a/Logtalk/manuals/print.css b/Logtalk/manuals/print.css
index 58a4d0070..b39bd5af4 100644
--- a/Logtalk/manuals/print.css
+++ b/Logtalk/manuals/print.css
@@ -64,7 +64,10 @@ body {
 	font-weight: bold;
 	font-family: Helvetica, Arial, Verdana, sans-serif;
 	border-color: black;
-	border-width: 0pt 0pt 1pt 0pt;
+	border-left: 0pt;
+	border-top: 0pt;
+	border-right: 0pt;
+	border-bottom: 1pt;
 	border-style: solid;
 	region: top;
 }
@@ -100,7 +103,10 @@ div.top-right > span.chapter:before {
 	font-weight: bold;
 	font-family: Helvetica, Arial, Verdana, sans-serif;
 	border-color: black;
-	border-width: 1pt 0pt 0pt 0pt;
+	border-left: 0pt;
+	border-top: 1pt;
+	border-right: 0pt;
+	border-bottom: 0pt;
 	border-style: solid;
 }
 
diff --git a/Logtalk/manuals/refman/builtins/abolish_category1.html b/Logtalk/manuals/refman/builtins/abolish_category1.html
index 8d1e86206..8bffe2edf 100644
--- a/Logtalk/manuals/refman/builtins/abolish_category1.html
+++ b/Logtalk/manuals/refman/builtins/abolish_category1.html
@@ -19,7 +19,7 @@
 
    
 
    contents > reference manual > built-in predicates
    
 
-
    abolish_category/1
    
+
    abolish_category/1
    
 
 
    Description
    
 
diff --git a/Logtalk/manuals/refman/builtins/abolish_events5.html b/Logtalk/manuals/refman/builtins/abolish_events5.html
index fdd80c813..4fdd02808 100644
--- a/Logtalk/manuals/refman/builtins/abolish_events5.html
+++ b/Logtalk/manuals/refman/builtins/abolish_events5.html
@@ -19,7 +19,7 @@
 
    
 
    contents > reference manual > built-in predicates
    
 
-
    abolish_events/5
    
+
    abolish_events/5
    
 
 
 
    Description
    
diff --git a/Logtalk/manuals/refman/builtins/abolish_object1.html b/Logtalk/manuals/refman/builtins/abolish_object1.html
index 2d691bc9e..7a4baf33e 100644
--- a/Logtalk/manuals/refman/builtins/abolish_object1.html
+++ b/Logtalk/manuals/refman/builtins/abolish_object1.html
@@ -19,7 +19,7 @@
 
    
 
    contents > reference manual > built-in predicates
    
 
-
    abolish_object/1
    
+
    abolish_object/1
    
 
 
    Description
    
 
diff --git a/Logtalk/manuals/refman/builtins/abolish_protocol1.html b/Logtalk/manuals/refman/builtins/abolish_protocol1.html
index c0354eb76..3947abb23 100644
--- a/Logtalk/manuals/refman/builtins/abolish_protocol1.html
+++ b/Logtalk/manuals/refman/builtins/abolish_protocol1.html
@@ -19,8 +19,7 @@
 
    
 
    contents > reference manual > built-in predicates
    
 
-
    abolish_protocol/1
    
-
+
    abolish_protocol/1
    
 
 
    Description
    
 
diff --git a/Logtalk/manuals/refman/builtins/category_property2.html b/Logtalk/manuals/refman/builtins/category_property2.html
index 5774e2606..655abc8d5 100644
--- a/Logtalk/manuals/refman/builtins/category_property2.html
+++ b/Logtalk/manuals/refman/builtins/category_property2.html
@@ -19,8 +19,7 @@
 
    
 
    contents > reference manual > built-in predicates
    
 
-
    category_property/2
    
-
+
    category_property/2
    
 
 
    Description
    
 
diff --git a/Logtalk/manuals/refman/builtins/create_category4.html b/Logtalk/manuals/refman/builtins/create_category4.html
index c2267cdfd..9a5bd4b07 100644
--- a/Logtalk/manuals/refman/builtins/create_category4.html
+++ b/Logtalk/manuals/refman/builtins/create_category4.html
@@ -19,8 +19,7 @@
 
    
 
    contents > reference manual > built-in predicates
    
 
-
    create_category/4
    
-
+
    create_category/4
    
 
 
    Description
    
 
diff --git a/Logtalk/manuals/refman/builtins/create_object4.html b/Logtalk/manuals/refman/builtins/create_object4.html
index 9ded105fa..a0825c9ad 100644
--- a/Logtalk/manuals/refman/builtins/create_object4.html
+++ b/Logtalk/manuals/refman/builtins/create_object4.html
@@ -19,8 +19,7 @@
 
    
 
    contents > reference manual > built-in predicates
    
 
-
    create_object/4
    
-
+
    create_object/4
    
 
 
    Description
    
 
diff --git a/Logtalk/manuals/refman/builtins/create_protocol3.html b/Logtalk/manuals/refman/builtins/create_protocol3.html
index 901a3369c..7c298c9a2 100644
--- a/Logtalk/manuals/refman/builtins/create_protocol3.html
+++ b/Logtalk/manuals/refman/builtins/create_protocol3.html
@@ -19,8 +19,7 @@
 
    
 
    contents > reference manual > built-in predicates
    
 
-
    create_protocol/3
    
-
+
    create_protocol/3
    
 
 
    Description
    
 
diff --git a/Logtalk/manuals/refman/builtins/current_category1.html b/Logtalk/manuals/refman/builtins/current_category1.html
index 3333007a9..5e246dd28 100644
--- a/Logtalk/manuals/refman/builtins/current_category1.html
+++ b/Logtalk/manuals/refman/builtins/current_category1.html
@@ -19,8 +19,7 @@
 
    
 
    contents > reference manual > built-in predicates
    
 
-
    current_category/1
    
-
+
    current_category/1
    
 
 
    Description
    
 
diff --git a/Logtalk/manuals/refman/builtins/current_event5.html b/Logtalk/manuals/refman/builtins/current_event5.html
index eb7fa0331..6dddcb81c 100644
--- a/Logtalk/manuals/refman/builtins/current_event5.html
+++ b/Logtalk/manuals/refman/builtins/current_event5.html
@@ -19,8 +19,7 @@
 
    
 
    contents > reference manual > built-in predicates
    
 
-
    current_event/5
    
-
+
    current_event/5
    
 
 
    Description
    
 
diff --git a/Logtalk/manuals/refman/builtins/current_logtalk_flag2.html b/Logtalk/manuals/refman/builtins/current_logtalk_flag2.html
index 7bac486b5..60935e39e 100644
--- a/Logtalk/manuals/refman/builtins/current_logtalk_flag2.html
+++ b/Logtalk/manuals/refman/builtins/current_logtalk_flag2.html
@@ -19,8 +19,7 @@
 
    
 
    contents > reference manual > built-in predicates
    
 
-
    current_logtalk_flag/2
    
-
+
    current_logtalk_flag/2
    
 
 
    Description
    
 
diff --git a/Logtalk/manuals/refman/builtins/current_object1.html b/Logtalk/manuals/refman/builtins/current_object1.html
index b8e1930f2..6546e1657 100644
--- a/Logtalk/manuals/refman/builtins/current_object1.html
+++ b/Logtalk/manuals/refman/builtins/current_object1.html
@@ -19,8 +19,7 @@
 
    
 
    contents > reference manual > built-in predicates
    
 
-
    current_object/1
    
-
+
    current_object/1
    
 
 
    Description
    
 
diff --git a/Logtalk/manuals/refman/builtins/current_protocol1.html b/Logtalk/manuals/refman/builtins/current_protocol1.html
index 555791c08..5f6fbb877 100644
--- a/Logtalk/manuals/refman/builtins/current_protocol1.html
+++ b/Logtalk/manuals/refman/builtins/current_protocol1.html
@@ -19,8 +19,7 @@
 
    
 
    contents > reference manual > built-in predicates
    
 
-
    current_protocol/1
    
-
+
    current_protocol/1
    
 
 
    Description
    
 
diff --git a/Logtalk/manuals/refman/builtins/define_events5.html b/Logtalk/manuals/refman/builtins/define_events5.html
index 9b13b23cd..555c3eb90 100644
--- a/Logtalk/manuals/refman/builtins/define_events5.html
+++ b/Logtalk/manuals/refman/builtins/define_events5.html
@@ -19,8 +19,7 @@
 
    
 
    contents > reference manual > built-in predicates
    
 
-
    define_events/5
    
-
+
    define_events/5
    
 
 
    Description
    
 
diff --git a/Logtalk/manuals/refman/builtins/extends_object2_3.html b/Logtalk/manuals/refman/builtins/extends_object2_3.html
index 819355ff4..7553c0491 100644
--- a/Logtalk/manuals/refman/builtins/extends_object2_3.html
+++ b/Logtalk/manuals/refman/builtins/extends_object2_3.html
@@ -19,8 +19,7 @@
 
    
 
    contents > reference manual > built-in predicates
    
 
-
    extends_object/2-3
    
-
+
    extends_object/2-3
    
 
 
    Description
    
 
diff --git a/Logtalk/manuals/refman/builtins/extends_protocol2_3.html b/Logtalk/manuals/refman/builtins/extends_protocol2_3.html
index e9676388a..9c12a4689 100644
--- a/Logtalk/manuals/refman/builtins/extends_protocol2_3.html
+++ b/Logtalk/manuals/refman/builtins/extends_protocol2_3.html
@@ -19,8 +19,7 @@
 
    
 
    contents > reference manual > built-in predicates
    
 
-
    extends_protocol/2-3
    
-
+
    extends_protocol/2-3
    
 
 
    Description
    
 
diff --git a/Logtalk/manuals/refman/builtins/forall2.html b/Logtalk/manuals/refman/builtins/forall2.html
index 366f03922..2b8a65408 100644
--- a/Logtalk/manuals/refman/builtins/forall2.html
+++ b/Logtalk/manuals/refman/builtins/forall2.html
@@ -19,8 +19,7 @@
 
    
 
    contents > reference manual > built-in predicates
    
 
-
    forall/2
    
-
+
    forall/2
    
 
 
    Description
    
 
diff --git a/Logtalk/manuals/refman/builtins/implements_protocol2_3.html b/Logtalk/manuals/refman/builtins/implements_protocol2_3.html
index 15cdaf2d8..7b6d16acd 100644
--- a/Logtalk/manuals/refman/builtins/implements_protocol2_3.html
+++ b/Logtalk/manuals/refman/builtins/implements_protocol2_3.html
@@ -19,8 +19,7 @@
 
    
 
    contents > reference manual > built-in predicates
    
 
-
    implements_protocol/2-3
    
-
+
    implements_protocol/2-3
    
 
 
    Description
    
 
diff --git a/Logtalk/manuals/refman/builtins/imports_category2_3.html b/Logtalk/manuals/refman/builtins/imports_category2_3.html
index bf2d1337f..b969f890a 100644
--- a/Logtalk/manuals/refman/builtins/imports_category2_3.html
+++ b/Logtalk/manuals/refman/builtins/imports_category2_3.html
@@ -19,8 +19,7 @@
 
    
 
    contents > reference manual > built-in predicates
    
 
-
    imports_category/2-3
    
-
+
    imports_category/2-3
    
 
 
    Description
    
 
diff --git a/Logtalk/manuals/refman/builtins/instantiates_class2_3.html b/Logtalk/manuals/refman/builtins/instantiates_class2_3.html
index d5b13ced8..3ddb29474 100644
--- a/Logtalk/manuals/refman/builtins/instantiates_class2_3.html
+++ b/Logtalk/manuals/refman/builtins/instantiates_class2_3.html
@@ -19,8 +19,7 @@
 
    
 
    contents > reference manual > built-in predicates
    
 
-
    instantiates_class/2-3
    
-
+
    instantiates_class/2-3
    
 
 
    Description
    
 
diff --git a/Logtalk/manuals/refman/builtins/logtalk_compile1.html b/Logtalk/manuals/refman/builtins/logtalk_compile1.html
index 7865208cf..22d878e55 100644
--- a/Logtalk/manuals/refman/builtins/logtalk_compile1.html
+++ b/Logtalk/manuals/refman/builtins/logtalk_compile1.html
@@ -19,8 +19,7 @@
 
    
 
    contents > reference manual > built-in predicates
    
 
-
    logtalk_compile/1
    
-
+
    logtalk_compile/1
    
 
 
    Description
    
 
diff --git a/Logtalk/manuals/refman/builtins/logtalk_compile2.html b/Logtalk/manuals/refman/builtins/logtalk_compile2.html
index bfbff85bd..67e77f72e 100644
--- a/Logtalk/manuals/refman/builtins/logtalk_compile2.html
+++ b/Logtalk/manuals/refman/builtins/logtalk_compile2.html
@@ -19,8 +19,7 @@
 
    
 
    contents > reference manual > built-in predicates
    
 
-
    logtalk_compile/2
    
-
+
    logtalk_compile/2
    
 
 
    Description
    
 
diff --git a/Logtalk/manuals/refman/builtins/logtalk_library_path2.html b/Logtalk/manuals/refman/builtins/logtalk_library_path2.html
index e7c9da93d..974419406 100644
--- a/Logtalk/manuals/refman/builtins/logtalk_library_path2.html
+++ b/Logtalk/manuals/refman/builtins/logtalk_library_path2.html
@@ -19,14 +19,13 @@
 
    
 
    contents > reference manual > built-in predicates
    
 
-
    logtalk_library_path/2
    
-
+
    logtalk_library_path/2
    
 
 
    Description
    
 
 
    logtalk_library_path(Library, Path)
    
 
    
-Dynamic, user-defined predicate, allowing the declaration of aliases to library paths. Library aliases may also be used on the second argument (using the notation alias(path)). Paths must always end with the path directory separator character.
+Dynamic, user-defined predicate, allowing the declaration of aliases to library paths. Library aliases may also be used on the second argument (using the notation alias(path)). Paths must always end with the path directory separator character ("/").
 
    
 
 
    Template and modes
    
@@ -65,7 +64,7 @@ yes
    Copyright © Paulo Moura — Logtalk.org
    - Last updated on: October 26, 2006 + Last updated on: May 26, 2007
    previous | glossary | next
    diff --git a/Logtalk/manuals/refman/builtins/logtalk_load1.html b/Logtalk/manuals/refman/builtins/logtalk_load1.html index d38875ce3..7f962aa38 100644 --- a/Logtalk/manuals/refman/builtins/logtalk_load1.html +++ b/Logtalk/manuals/refman/builtins/logtalk_load1.html @@ -19,8 +19,7 @@
    contents > reference manual > built-in predicates
    -

    logtalk_load/1

    - +

    logtalk_load/1

    Description

    @@ -32,6 +31,9 @@ Compiles to disk and then loads to memory a source file or a list of source file

    Note that only the errors related to problems in the predicate argument are listed below. Other exceptions may be thrown by the compiler if any of the loaded entities contain syntax errors.

    +

    +Depending on the back-end Prolog compiler, the notation {File} may be used in alternative (check the config files for its availability). +

    Template and modes

    @@ -65,7 +67,7 @@ Note that only the errors related to problems in the predicate argument are list
    Copyright © Paulo Moura — Logtalk.org
    - Last updated on: October 26, 2006 + Last updated on: May 26, 2007
    previous | glossary | next
    diff --git a/Logtalk/manuals/refman/builtins/logtalk_load2.html b/Logtalk/manuals/refman/builtins/logtalk_load2.html index c65fc34d8..ea606e84c 100644 --- a/Logtalk/manuals/refman/builtins/logtalk_load2.html +++ b/Logtalk/manuals/refman/builtins/logtalk_load2.html @@ -19,8 +19,7 @@
    contents > reference manual > built-in predicates
    -

    logtalk_load/2

    - +

    logtalk_load/2

    Description

    diff --git a/Logtalk/manuals/refman/builtins/logtalk_version3.html b/Logtalk/manuals/refman/builtins/logtalk_version3.html index 2c974bd12..c9de80460 100644 --- a/Logtalk/manuals/refman/builtins/logtalk_version3.html +++ b/Logtalk/manuals/refman/builtins/logtalk_version3.html @@ -19,14 +19,13 @@
    contents > reference manual > built-in predicates
    -

    logtalk_version/3

    - +

    logtalk_version/3

    Description

    logtalk_version(Major, Minor, Patch)

    -Returns the Logtalk preprocessor and runtime version. +Returns the Logtalk compiler and runtime version.

    Template and modes

    @@ -51,7 +50,7 @@ Returns the Logtalk preprocessor and runtime version.
    Copyright © Paulo Moura — Logtalk.org
    - Last updated on: October 26, 2006 + Last updated on: April 14, 2007
    previous | glossary | next
    diff --git a/Logtalk/manuals/refman/builtins/object_property2.html b/Logtalk/manuals/refman/builtins/object_property2.html index 85fab8395..d8ee56233 100644 --- a/Logtalk/manuals/refman/builtins/object_property2.html +++ b/Logtalk/manuals/refman/builtins/object_property2.html @@ -19,8 +19,7 @@
    contents > reference manual > built-in predicates
    -

    object_property/2

    - +

    object_property/2

    Description

    diff --git a/Logtalk/manuals/refman/builtins/protocol_property2.html b/Logtalk/manuals/refman/builtins/protocol_property2.html index f7181096f..6f544792c 100644 --- a/Logtalk/manuals/refman/builtins/protocol_property2.html +++ b/Logtalk/manuals/refman/builtins/protocol_property2.html @@ -19,8 +19,7 @@
    contents > reference manual > built-in predicates
    -

    protocol_property/2

    - +

    protocol_property/2

    Description

    diff --git a/Logtalk/manuals/refman/builtins/retractall1.html b/Logtalk/manuals/refman/builtins/retractall1.html index a0f7abe79..7f7a58076 100644 --- a/Logtalk/manuals/refman/builtins/retractall1.html +++ b/Logtalk/manuals/refman/builtins/retractall1.html @@ -19,8 +19,7 @@
    contents > reference manual > built-in predicates
    -

    retractall/1

    - +

    retractall/1

    Description

    diff --git a/Logtalk/manuals/refman/builtins/set_logtalk_flag2.html b/Logtalk/manuals/refman/builtins/set_logtalk_flag2.html index 02902651c..cad04a34e 100644 --- a/Logtalk/manuals/refman/builtins/set_logtalk_flag2.html +++ b/Logtalk/manuals/refman/builtins/set_logtalk_flag2.html @@ -19,8 +19,7 @@
    contents > reference manual > built-in predicates
    -

    set_logtalk_flag/2

    - +

    set_logtalk_flag/2

    Description

    diff --git a/Logtalk/manuals/refman/builtins/specializes_class2_3.html b/Logtalk/manuals/refman/builtins/specializes_class2_3.html index f3fa225c1..9e000d94a 100644 --- a/Logtalk/manuals/refman/builtins/specializes_class2_3.html +++ b/Logtalk/manuals/refman/builtins/specializes_class2_3.html @@ -19,8 +19,7 @@
    contents > reference manual > built-in predicates
    -

    specializes_class/2-3

    - +

    specializes_class/2-3

    Description

    diff --git a/Logtalk/manuals/refman/builtins/threaded1.html b/Logtalk/manuals/refman/builtins/threaded1.html index 6bdf02aa8..397c798b3 100644 --- a/Logtalk/manuals/refman/builtins/threaded1.html +++ b/Logtalk/manuals/refman/builtins/threaded1.html @@ -19,14 +19,13 @@
    contents > reference manual > built-in predicates
    -

    threaded/1

    - +

    threaded/1

    Description

    threaded(Conjunction)

    -Proves each goal in a conjunction of goals in its own thread. The argument can also be a conjunction of messages, either to self or to an explicit object. A call to this predicate blocks until all individual threads terminate. This predicate is transparent to cuts and exceptions. +Proves each goal in a conjunction of goals in its own thread. The argument can also be a conjunction of messages, either to self or to an explicit object. A call to this predicate blocks until all individual threads terminate. This predicate is deterministic and opaque to cuts, similar to once/1.

    Template and modes

    @@ -55,12 +54,14 @@ Proves each goal in a conjunction of goals in its own thread. The argument can a
    threaded(::(Message, Messages))
    Prove a conjunction of messages to an object, each one in its own thread:
    threaded(Object::(Message, Messages))
    +
    Prove a conjunction of objects receiving the same message, each one in its own thread:
    +
    threaded((Object, Objects)::Message)
    Copyright © Paulo Moura — Logtalk.org
    - Last updated on: March 24, 2007 + Last updated on: May 8, 2007
    previous | glossary | next
    diff --git a/Logtalk/manuals/refman/builtins/threaded_call1.html b/Logtalk/manuals/refman/builtins/threaded_call1.html index 6e8b98fb2..7d65ad2bc 100644 --- a/Logtalk/manuals/refman/builtins/threaded_call1.html +++ b/Logtalk/manuals/refman/builtins/threaded_call1.html @@ -19,19 +19,18 @@
    contents > reference manual > built-in predicates
    -

    threaded_call/1

    - +

    threaded_call/1

    Description

    threaded_call(Goal)

    -Proves Goal asynchronously using a new thread. The argument can be a message sending goal. This call always succeeds. The result (success, failure, or exception) is sent back to the thread of the object containing the call (this). +Proves Goal asynchronously using a new thread. The argument can be a message sending goal. This call always succeeds. The result (success, failure, or exception) is sent back to the message queue of the object containing the call (this).

    Template and modes

    -
    threaded_call(+callable)
    +
    threaded_call(@callable)

    Errors

    @@ -56,7 +55,7 @@ Proves Goal asynchronously using a new thread. The argument can be
    Copyright © Paulo Moura — Logtalk.org
    - Last updated on: February 13, 2007 + Last updated on: May 26, 2007
    previous | glossary | next
    diff --git a/Logtalk/manuals/refman/builtins/threaded_exit1.html b/Logtalk/manuals/refman/builtins/threaded_exit1.html index e08918711..02c8b68cb 100644 --- a/Logtalk/manuals/refman/builtins/threaded_exit1.html +++ b/Logtalk/manuals/refman/builtins/threaded_exit1.html @@ -19,14 +19,13 @@
    contents > reference manual > built-in predicates
    -

    threaded_exit/1

    - +

    threaded_exit/1

    Description

    threaded_exit(Goal)

    -Retrieve the result of proving Goal in a new thread. This call blocks execution until the reply is sent to the this thread by the thread executing the goal. This predicate is non-deterministic, providing access to any alternative solutions of its argument. +Retrieve the result of proving Goal in a new thread. This predicate blocks execution until the reply is sent to the this message queue by the thread executing the goal. When there is no thread proving the goal, the predicate generates an exception. This predicate is non-deterministic, providing access to any alternative solutions of its argument.

    Template and modes

    @@ -40,6 +39,8 @@ Retrieve the result of proving Goal in a new thread. This call bloc
    instantiation_error
    Goal is neither a variable nor a callable term:
    type_error(callable, Goal)
    +
    no thread is running for proving Goal:
    +
    existence_error(goal_thread, Goal)

    Examples

    @@ -56,7 +57,7 @@ Retrieve the result of proving Goal in a new thread. This call bloc
    Copyright © Paulo Moura — Logtalk.org
    - Last updated on: December 8, 2006 + Last updated on: May 29, 2007
    previous | glossary | next
    diff --git a/Logtalk/manuals/refman/builtins/threaded_ignore1.html b/Logtalk/manuals/refman/builtins/threaded_ignore1.html index ee61228bc..cb0df1eca 100644 --- a/Logtalk/manuals/refman/builtins/threaded_ignore1.html +++ b/Logtalk/manuals/refman/builtins/threaded_ignore1.html @@ -19,19 +19,18 @@
    contents > reference manual > built-in predicates
    -

    threaded_ignore/1

    - +

    threaded_ignore/1

    Description

    threaded_ignore(Goal)

    -Proves Goal asynchronously using a new thread. Only the first goal solution is found. The argument can be a message sending goal. This call always succeeds, independently of the result (success, failure, or exception), which is simply discarded instead of being sent back to the thread of the object containing the call (this). +Proves Goal asynchronously using a new thread. Only the first goal solution is found. The argument can be a message sending goal. This call always succeeds, independently of the result (success, failure, or exception), which is simply discarded instead of being sent back to the message queue of the object containing the call (this).

    Template and modes

    -
    threaded_ignore(+callable)
    +
    threaded_ignore(@callable)

    Errors

    @@ -56,7 +55,7 @@ Proves Goal asynchronously using a new thread. Only the first goal
    Copyright © Paulo Moura — Logtalk.org
    - Last updated on: February 13, 2007 + Last updated on: May 26, 2007
    previous | glossary | next
    diff --git a/Logtalk/manuals/refman/builtins/threaded_notify1.html b/Logtalk/manuals/refman/builtins/threaded_notify1.html index 1741a072d..aaa806b9c 100644 --- a/Logtalk/manuals/refman/builtins/threaded_notify1.html +++ b/Logtalk/manuals/refman/builtins/threaded_notify1.html @@ -19,8 +19,7 @@
    contents > reference manual > built-in predicates
    -

    threaded_notify/1

    - +

    threaded_notify/1

    Description

    diff --git a/Logtalk/manuals/refman/builtins/threaded_once1.html b/Logtalk/manuals/refman/builtins/threaded_once1.html index 755f87b7f..1100240da 100644 --- a/Logtalk/manuals/refman/builtins/threaded_once1.html +++ b/Logtalk/manuals/refman/builtins/threaded_once1.html @@ -19,19 +19,18 @@
    contents > reference manual > built-in predicates
    -

    threaded_once/1

    - +

    threaded_once/1

    Description

    threaded_once(Goal)

    -Proves Goal asynchronously using a new thread. Only the first goal solution is found. The argument can be a message sending goal. This call always succeeds. The result (success, failure, or exception) is sent back to the thread of the object containing the call (this). +Proves Goal asynchronously using a new thread. Only the first goal solution is found. The argument can be a message sending goal. This call always succeeds. The result (success, failure, or exception) is sent back to the message queue of the object containing the call (this).

    Template and modes

    -
    threaded_once(+callable)
    +
    threaded_once(@callable)

    Errors

    @@ -56,7 +55,7 @@ Proves Goal asynchronously using a new thread. Only the first goal
    Copyright © Paulo Moura — Logtalk.org
    - Last updated on: February 13, 2007 + Last updated on: May 26, 2007
    previous | glossary | next
    diff --git a/Logtalk/manuals/refman/builtins/threaded_peek1.html b/Logtalk/manuals/refman/builtins/threaded_peek1.html index da432dda0..8d98d3a71 100644 --- a/Logtalk/manuals/refman/builtins/threaded_peek1.html +++ b/Logtalk/manuals/refman/builtins/threaded_peek1.html @@ -19,7 +19,7 @@
    contents > reference manual > built-in predicates
    -

    threaded_peek/1

    +

    threaded_peek/1

    Description

    diff --git a/Logtalk/manuals/refman/builtins/threaded_race1.html b/Logtalk/manuals/refman/builtins/threaded_race1.html index bea927856..7ac296b65 100644 --- a/Logtalk/manuals/refman/builtins/threaded_race1.html +++ b/Logtalk/manuals/refman/builtins/threaded_race1.html @@ -19,14 +19,13 @@
    contents > reference manual > built-in predicates
    -

    threaded_race/1

    - +

    threaded_race/1

    Description

    threaded_race((Goal; Goals))

    -Allows a disjunction of goals to be interpreted as a set of competing goals, each one running on its own thread. This call always succeeds. When one of the goals succeeds, the other ones are aborted (i.e. their threads are terminated). The result (of the first goal to succeed) is sent back to the thread of the object containing the call (this). The corresponding threaded_exit/1 goal must match all the goals in the disjunction. This is useful when you have a set of different methods to solve a problem without knowing a priori which one will lead to the fastest result. +Allows a disjunction of goals to be interpreted as a set of competing goals, each one running on its own thread. This call always succeeds. When one of the goals succeeds, the other ones are aborted (i.e. their threads are terminated). The result (of the first goal to succeed) is sent back to the message queue of the object containing the call (this). The corresponding threaded_exit/1 goal must match all the goals in the disjunction. This is useful when you have a set of different methods to solve a problem without knowing a priori which one will lead to the fastest result.

    Template and modes

    @@ -56,7 +55,7 @@ Allows a disjunction of goals to be interpreted as a set of competing g
    Copyright © Paulo Moura — Logtalk.org
    - Last updated on: February 13, 2007 + Last updated on: May 26, 2007
    previous | glossary | next
    diff --git a/Logtalk/manuals/refman/builtins/threaded_wait1.html b/Logtalk/manuals/refman/builtins/threaded_wait1.html index 402566739..901d63528 100644 --- a/Logtalk/manuals/refman/builtins/threaded_wait1.html +++ b/Logtalk/manuals/refman/builtins/threaded_wait1.html @@ -19,14 +19,13 @@
    contents > reference manual > built-in predicates
    -

    threaded_wait/1

    - +

    threaded_wait/1

    Description

    threaded_wait(Term)

    -Suspends the thread making the call until a notification is received that unifies with Term. The call must be made within the same object (this) containing the calls to the threaded_notify/1 predicate that will eventually send the notification. +Suspends the thread making the call until a notification is received that unifies with Term. The call must be made within the same object (this) containing the calls to the threaded_notify/1 predicate that will eventually send the notification.

    Template and modes

    diff --git a/Logtalk/manuals/refman/control/context2.html b/Logtalk/manuals/refman/control/context2.html new file mode 100644 index 000000000..4708b5f2a --- /dev/null +++ b/Logtalk/manuals/refman/control/context2.html @@ -0,0 +1,68 @@ + + + + + + + + Logtalk control construct: <</2 + + + + + + +
    Logtalk reference manual
    +
    Control construct: <</2
    +
    +
    +
    contents > reference manual > control constructs
    + +

    <</2

    + +

    Description

    + +
    Object << Goal
    +

    +Calls a goal within the context of the specified object. Goal is called with the execution context (sender, this, and self) set to Object. Goal may need to be written within brackets to avoid parsing errors due to operator clashes. This control construct is mainly used for debugging and for writing object unit tests. +

    + +

    Template and modes

    + +
    +object_identifier << +callable
    + +

    Errors

    + +
    +
    Either Object or Goal is a variable:
    +
    instantiation_error
    +
    Object is neither a variable nor a valid object identifier:
    +
    type_error(object_identifier, Goal)
    +
    Goal is neither a variable nor a callable term:
    +
    type_error(callable, Goal)
    +
    Object does not contain a local definition for the Goal predicate:
    +
    existence_error(procedure, Goal)
    +
    Object does not exist:
    +
    existence_error(object, Object)
    +
    + +

    Examples

    + +
    test(member) :-
+    list << member(1, [1]).
    + +
    +
    + Copyright © Paulo Moura — Logtalk.org
    + Last updated on: June 8, 2007 +
    +
    + previous | glossary | next
    + XHTML + CSS +
    +
    + + + + diff --git a/Logtalk/manuals/refman/control/direct1.html b/Logtalk/manuals/refman/control/direct1.html new file mode 100644 index 000000000..62a2a7968 --- /dev/null +++ b/Logtalk/manuals/refman/control/direct1.html @@ -0,0 +1,71 @@ + + + + + + + + Logtalk control construct: :/1 + + + + + + +
    Logtalk reference manual
    +
    Control construct: :/1
    +
    +
    +
    contents > reference manual > control constructs
    + +

    :/1

    + +

    Description

    + +
    :Goal
    +

    +Calls an imported category predicate without using the message sending mechanisms. The category predicate is called with the same execution context (sender, this, and self) as the predicate whose body contains the call. The lookup for both the predicate declaration and the predicate definition begins in this. For the predicate definition, the lookup is restricted to the imported categories. As a consequence, any redeclaration or redefinition of the predicate in a descendant of the object containing the call will be ignored. +

    + +

    Template and modes

    + +
    :+callable
    + +

    Errors

    + +
    +
    Goal is a variable:
    +
    instantiation_error
    +
    Goal is neither a variable nor a callable term:
    +
    type_error(callable, Goal)
    +
    The object containing the call does not import any category:
    +
    existence_error(procedure, Goal)
    +
    + +

    Examples

    + +
    :- object(bounded_point,
+    imports(bounded_coordinate),
+    instantiates(class),
+    specializes(point)).
+
+    move(X, Y) :-
+        :check_bounds(x, X),    % defined in the "bounded_coordinate" category
+        :check_bounds(y, Y),
+        ^^move(X, Y).
    + +
    +
    + Copyright © Paulo Moura — Logtalk.org
    + Last updated on: June 8, 2007 +
    +
    + previous | glossary | next
    + XHTML + CSS +
    +
    + + + + diff --git a/Logtalk/manuals/refman/control/external1.html b/Logtalk/manuals/refman/control/external1.html index 368bae5bf..0a8fd831d 100644 --- a/Logtalk/manuals/refman/control/external1.html +++ b/Logtalk/manuals/refman/control/external1.html @@ -19,14 +19,13 @@
    contents > reference manual > control constructs
    -

    {}/1

    - +

    {}/1

    Description

    {Goal}

    - Calls external Prolog code. Can be used to bypass the Logtalk preprocessor/compiler. +Calls external Prolog code. Can be used to bypass the Logtalk compiler. The argument is called within the context of the pseudo-object user.

    Template and modes

    @@ -35,11 +34,12 @@

    Errors

    -
    -

    - (none) -

    -
    +
    +
    Goal is a variable:
    +
    instantiation_error
    +
    Goal is neither a variable nor a callable term:
    +
    type_error(callable, Goal)
    +

    Examples

    @@ -49,7 +49,7 @@
    Copyright © Paulo Moura — Logtalk.org
    - Last updated on: October 26, 2006 + Last updated on: June 5, 2007
    previous | glossary | next
    diff --git a/Logtalk/manuals/refman/control/to_object2.html b/Logtalk/manuals/refman/control/to_object2.html index a340dcaa9..823ed9385 100644 --- a/Logtalk/manuals/refman/control/to_object2.html +++ b/Logtalk/manuals/refman/control/to_object2.html @@ -19,8 +19,7 @@
    contents > reference manual > control constructs
    -

    ::/2

    - +

    ::/2

    Description

    diff --git a/Logtalk/manuals/refman/control/to_self1.html b/Logtalk/manuals/refman/control/to_self1.html index 5975277c0..de19b130c 100644 --- a/Logtalk/manuals/refman/control/to_self1.html +++ b/Logtalk/manuals/refman/control/to_self1.html @@ -19,8 +19,7 @@
    contents > reference manual > control constructs
    -

    ::/1

    - +

    ::/1

    Description

    diff --git a/Logtalk/manuals/refman/control/to_super1.html b/Logtalk/manuals/refman/control/to_super1.html index c44c29997..67b3bbc0c 100644 --- a/Logtalk/manuals/refman/control/to_super1.html +++ b/Logtalk/manuals/refman/control/to_super1.html @@ -19,8 +19,7 @@
    contents > reference manual > control constructs
    -

    ^^/1

    - +

    ^^/1

    Description

    diff --git a/Logtalk/manuals/refman/directives/alias3.html b/Logtalk/manuals/refman/directives/alias3.html index b8eeda8e7..431e6a95e 100644 --- a/Logtalk/manuals/refman/directives/alias3.html +++ b/Logtalk/manuals/refman/directives/alias3.html @@ -19,8 +19,7 @@
    contents > reference manual > directives
    -

    alias/3

    - +

    alias/3

    Description

    diff --git a/Logtalk/manuals/refman/directives/calls1.html b/Logtalk/manuals/refman/directives/calls1.html index 67a0a3c76..403702f9d 100644 --- a/Logtalk/manuals/refman/directives/calls1.html +++ b/Logtalk/manuals/refman/directives/calls1.html @@ -19,8 +19,7 @@
    contents > reference manual > directives
    -

    calls/1

    - +

    calls/1

    Description

    diff --git a/Logtalk/manuals/refman/directives/category1_3.html b/Logtalk/manuals/refman/directives/category1_3.html index dc29e00b1..6f8cb8dbf 100644 --- a/Logtalk/manuals/refman/directives/category1_3.html +++ b/Logtalk/manuals/refman/directives/category1_3.html @@ -19,8 +19,7 @@
    contents > reference manual > directives
    -

    category/1-3

    - +

    category/1-3

    Description

    diff --git a/Logtalk/manuals/refman/directives/discontiguous1.html b/Logtalk/manuals/refman/directives/discontiguous1.html index 8034f6c80..9b109827d 100644 --- a/Logtalk/manuals/refman/directives/discontiguous1.html +++ b/Logtalk/manuals/refman/directives/discontiguous1.html @@ -19,8 +19,7 @@
    contents > reference manual > directives
    -

    discontiguous/1

    - +

    discontiguous/1

    Description

    diff --git a/Logtalk/manuals/refman/directives/dynamic0.html b/Logtalk/manuals/refman/directives/dynamic0.html index 9fd847700..c085f6a12 100644 --- a/Logtalk/manuals/refman/directives/dynamic0.html +++ b/Logtalk/manuals/refman/directives/dynamic0.html @@ -19,8 +19,7 @@
    contents > reference manual > directives
    -

    dynamic/0

    - +

    dynamic/0

    Description

    diff --git a/Logtalk/manuals/refman/directives/dynamic1.html b/Logtalk/manuals/refman/directives/dynamic1.html index 6956028dc..141cfcd13 100644 --- a/Logtalk/manuals/refman/directives/dynamic1.html +++ b/Logtalk/manuals/refman/directives/dynamic1.html @@ -19,8 +19,7 @@
    contents > reference manual > directives
    -

    dynamic/1

    - +

    dynamic/1

    Description

    diff --git a/Logtalk/manuals/refman/directives/encoding1.html b/Logtalk/manuals/refman/directives/encoding1.html index 6e95f705a..a2dc1da3d 100644 --- a/Logtalk/manuals/refman/directives/encoding1.html +++ b/Logtalk/manuals/refman/directives/encoding1.html @@ -19,8 +19,7 @@
    contents > reference manual > directives
    -

    encoding/1

    - +

    encoding/1

    Description

    diff --git a/Logtalk/manuals/refman/directives/end_category0.html b/Logtalk/manuals/refman/directives/end_category0.html index 463537c40..2b0d1c9dd 100644 --- a/Logtalk/manuals/refman/directives/end_category0.html +++ b/Logtalk/manuals/refman/directives/end_category0.html @@ -19,8 +19,7 @@
    contents > reference manual > directives
    -

    end_category/0

    - +

    end_category/0

    Description

    diff --git a/Logtalk/manuals/refman/directives/end_object0.html b/Logtalk/manuals/refman/directives/end_object0.html index 77b8d8fc6..5c3d3b430 100644 --- a/Logtalk/manuals/refman/directives/end_object0.html +++ b/Logtalk/manuals/refman/directives/end_object0.html @@ -19,8 +19,7 @@
    contents > reference manual > directives
    -

    end_object/0

    - +

    end_object/0

    Description

    diff --git a/Logtalk/manuals/refman/directives/end_protocol0.html b/Logtalk/manuals/refman/directives/end_protocol0.html index 8ada63d7f..b7c24cc66 100644 --- a/Logtalk/manuals/refman/directives/end_protocol0.html +++ b/Logtalk/manuals/refman/directives/end_protocol0.html @@ -19,8 +19,7 @@
    contents > reference manual > directives
    -

    end_protocol/0

    - +

    end_protocol/0

    Description

    diff --git a/Logtalk/manuals/refman/directives/info1.html b/Logtalk/manuals/refman/directives/info1.html index 106e93570..8253f8b2b 100644 --- a/Logtalk/manuals/refman/directives/info1.html +++ b/Logtalk/manuals/refman/directives/info1.html @@ -19,8 +19,7 @@
    contents > reference manual > directives
    -

    info/1

    - +

    info/1

    Description

    diff --git a/Logtalk/manuals/refman/directives/info2.html b/Logtalk/manuals/refman/directives/info2.html index 6b9c42a9f..cd533475e 100644 --- a/Logtalk/manuals/refman/directives/info2.html +++ b/Logtalk/manuals/refman/directives/info2.html @@ -19,8 +19,7 @@
    contents > reference manual > directives
    -

    info/2

    - +

    info/2

    Description

    diff --git a/Logtalk/manuals/refman/directives/initialization1.html b/Logtalk/manuals/refman/directives/initialization1.html index 03e1a313a..d2f5c2222 100644 --- a/Logtalk/manuals/refman/directives/initialization1.html +++ b/Logtalk/manuals/refman/directives/initialization1.html @@ -19,8 +19,7 @@
    contents > reference manual > directives
    -

    initialization/1

    - +

    initialization/1

    Description

    diff --git a/Logtalk/manuals/refman/directives/meta_predicate1.html b/Logtalk/manuals/refman/directives/meta_predicate1.html index 87ca1aa77..a0ea276b7 100644 --- a/Logtalk/manuals/refman/directives/meta_predicate1.html +++ b/Logtalk/manuals/refman/directives/meta_predicate1.html @@ -19,8 +19,7 @@
    contents > reference manual > directives
    -

    meta_predicate/1

    - +

    meta_predicate/1

    Description

    diff --git a/Logtalk/manuals/refman/directives/mode2.html b/Logtalk/manuals/refman/directives/mode2.html index cfe3a949c..fe848ec1d 100644 --- a/Logtalk/manuals/refman/directives/mode2.html +++ b/Logtalk/manuals/refman/directives/mode2.html @@ -19,8 +19,7 @@
    contents > reference manual > directives
    -

    mode/2

    - +

    mode/2

    Description

    diff --git a/Logtalk/manuals/refman/directives/object1_5.html b/Logtalk/manuals/refman/directives/object1_5.html index 8bfb6cda0..3db059dcb 100644 --- a/Logtalk/manuals/refman/directives/object1_5.html +++ b/Logtalk/manuals/refman/directives/object1_5.html @@ -19,8 +19,7 @@
    contents > reference manual > directives
    -

    object/1-5

    - +

    object/1-5

    Description

    diff --git a/Logtalk/manuals/refman/directives/op3.html b/Logtalk/manuals/refman/directives/op3.html index 1e749fad8..05d730c7d 100644 --- a/Logtalk/manuals/refman/directives/op3.html +++ b/Logtalk/manuals/refman/directives/op3.html @@ -19,8 +19,7 @@
    contents > reference manual > directives
    -

    op/3

    - +

    op/3

    Description

    diff --git a/Logtalk/manuals/refman/directives/private1.html b/Logtalk/manuals/refman/directives/private1.html index 3813a3692..6124e2974 100644 --- a/Logtalk/manuals/refman/directives/private1.html +++ b/Logtalk/manuals/refman/directives/private1.html @@ -19,8 +19,7 @@
    contents > reference manual > directives
    -

    private/1

    - +

    private/1

    Description

    diff --git a/Logtalk/manuals/refman/directives/protected1.html b/Logtalk/manuals/refman/directives/protected1.html index a9fc987c9..357b6e134 100644 --- a/Logtalk/manuals/refman/directives/protected1.html +++ b/Logtalk/manuals/refman/directives/protected1.html @@ -19,8 +19,7 @@
    contents > reference manual > directives
    -

    protected/1

    - +

    protected/1

    Description

    diff --git a/Logtalk/manuals/refman/directives/protocol1_2.html b/Logtalk/manuals/refman/directives/protocol1_2.html index f67c51f04..22041483b 100644 --- a/Logtalk/manuals/refman/directives/protocol1_2.html +++ b/Logtalk/manuals/refman/directives/protocol1_2.html @@ -19,8 +19,7 @@
    contents > reference manual > directives
    -

    protocol/1-2

    - +

    protocol/1-2

    Description

    diff --git a/Logtalk/manuals/refman/directives/public1.html b/Logtalk/manuals/refman/directives/public1.html index afe2db161..a3f7a5086 100644 --- a/Logtalk/manuals/refman/directives/public1.html +++ b/Logtalk/manuals/refman/directives/public1.html @@ -19,8 +19,7 @@
    contents > reference manual > directives
    -

    public/1

    - +

    public/1

    Description

    diff --git a/Logtalk/manuals/refman/directives/synchronized0.html b/Logtalk/manuals/refman/directives/synchronized0.html index 3364a9af2..e4ff3b8f7 100644 --- a/Logtalk/manuals/refman/directives/synchronized0.html +++ b/Logtalk/manuals/refman/directives/synchronized0.html @@ -19,8 +19,7 @@
    contents > reference manual > directives
    -

    synchronized/0

    - +

    synchronized/0

    Description

    diff --git a/Logtalk/manuals/refman/directives/synchronized1.html b/Logtalk/manuals/refman/directives/synchronized1.html index f485c77a5..598990887 100644 --- a/Logtalk/manuals/refman/directives/synchronized1.html +++ b/Logtalk/manuals/refman/directives/synchronized1.html @@ -19,8 +19,7 @@
    contents > reference manual > directives
    -

    synchronized/1

    - +

    synchronized/1

    Description

    diff --git a/Logtalk/manuals/refman/directives/threaded0.html b/Logtalk/manuals/refman/directives/threaded0.html index c0ed79052..b4945dcf8 100644 --- a/Logtalk/manuals/refman/directives/threaded0.html +++ b/Logtalk/manuals/refman/directives/threaded0.html @@ -19,14 +19,13 @@
    contents > reference manual > directives
    -

    threaded/0

    - +

    threaded/0

    Description

    threaded

    -Declares that an entity support asynchronous messages. Any object containing calls to the predicates threaded_call/1-2 or threaded_exit/1-2 must contain this directive. +Declares that an object (or a category) supports concurrent calls and asynchronous messages. Any object (or category) containing calls to the built-in multi-threading predicates must contain this directive.

    Template and modes

    @@ -41,7 +40,7 @@ Declares that an entity support asynchronous messages. Any object containing cal
    Copyright © Paulo Moura — Logtalk.org
    - Last updated on: October 26, 2006 + Last updated on: May 26, 2007
    previous | glossary | next
    diff --git a/Logtalk/manuals/refman/directives/uses1.html b/Logtalk/manuals/refman/directives/uses1.html index 536fadfaa..a7a3afcee 100644 --- a/Logtalk/manuals/refman/directives/uses1.html +++ b/Logtalk/manuals/refman/directives/uses1.html @@ -19,8 +19,7 @@
    contents > reference manual > directives
    -

    uses/1

    - +

    uses/1

    Description

    diff --git a/Logtalk/manuals/refman/directives/uses2.html b/Logtalk/manuals/refman/directives/uses2.html index d92bf713f..252fbfc0e 100644 --- a/Logtalk/manuals/refman/directives/uses2.html +++ b/Logtalk/manuals/refman/directives/uses2.html @@ -19,15 +19,14 @@
    contents > reference manual > directives
    -

    uses/2

    - +

    uses/2

    Description

    uses(Object, Predicates)
 uses(Object, PredicatesAndAliases)

    -Declares that all calls (made from predicates defined in the category or object containing the directive) to the specified predicates are to be interpreted as messages to the specified object. Thus, this directive may be used to simplify writing of predicate definitions by allowing the programmer to omit the Object:: prefix when using the predicates listed in the directive (as long as the predicate calls do not occur as arguments for user-defined meta_predicates or for non-standard Prolog meta_predicates not declared on the config files). +Declares that all calls (made from predicates defined in the category or object containing the directive) to the specified predicates are to be interpreted as messages to the specified object. Thus, this directive may be used to simplify writing of predicate definitions by allowing the programmer to omit the Object:: prefix when using the predicates listed in the directive (as long as the predicate calls do not occur as arguments for user-defined meta-predicates or for non-standard Prolog meta-predicates not declared on the config files).

    It is possible to specify a predicate alias using the notation Functor/Arity::Alias/Arity. Aliases may be used either for avoiding conflicts between predicates specificed in several uses/2 directives or for giving more meanfingul names considering the using context of the predicates. @@ -63,7 +62,7 @@ btree_to_queue :-

    Copyright © Paulo Moura — Logtalk.org
    - Last updated on: October 26, 2006 + Last updated on: June 4, 2007
    previous | glossary | next
    diff --git a/Logtalk/manuals/refman/grammar.html b/Logtalk/manuals/refman/grammar.html index 10dcb6c4c..1a4ad320b 100644 --- a/Logtalk/manuals/refman/grammar.html +++ b/Logtalk/manuals/refman/grammar.html @@ -19,14 +19,14 @@
    contents > reference manual
    -

    Grammar

    +

    Grammar

    The Logtalk grammar is here described using Backus-Naur Form syntax. Non-terminal symbols in italics have the definition found in the ISO Prolog Standard. Terminal symbols are represented in a fixed width font and between "".

    -

    Compilation units

    +

    Compilation units

    entity ::=
    @@ -35,7 +35,7 @@ The Logtalk grammar is here described using Backus-Naur Form syntax. Non-termina
    protocol
    -

    Object definition

    +

    Object definition

    object ::=
    @@ -79,7 +79,7 @@ The Logtalk grammar is here described using Backus-Naur Form syntax. Non-termina
    -

    Category definition

    +

    Category definition

    category ::=
    @@ -105,7 +105,7 @@ The Logtalk grammar is here described using Backus-Naur Form syntax. Non-termina
    -

    Protocol definition

    +

    Protocol definition

    protocol ::=
    @@ -121,7 +121,7 @@ The Logtalk grammar is here described using Backus-Naur Form syntax. Non-termina
    -

    Entity relations

    +

    Entity relations

    implements_protocols ::=
    @@ -148,7 +148,7 @@ The Logtalk grammar is here described using Backus-Naur Form syntax. Non-termina
    "specializes(" specialized_objects ")"
    -

    Implemented protocols

    +

    Implemented protocols

    implemented_protocols ::=
    implemented_protocol |
    @@ -170,7 +170,7 @@ The Logtalk grammar is here described using Backus-Naur Form syntax. Non-termina
    "[" implemented_protocol_sequence "]"
    -

    Extended protocols

    +

    Extended protocols

    extended_protocols ::=
    extended_protocol |
    @@ -192,7 +192,7 @@ The Logtalk grammar is here described using Backus-Naur Form syntax. Non-termina
    "[" extended_protocol_sequence "]"
    -

    Imported categories

    +

    Imported categories

    imported_categories ::=
    imported_category |
    @@ -214,7 +214,7 @@ The Logtalk grammar is here described using Backus-Naur Form syntax. Non-termina
    "[" imported_category_sequence "]"
    -

    Extended objects

    +

    Extended objects

    extended_objects ::=
    extended_object |
    @@ -236,7 +236,7 @@ The Logtalk grammar is here described using Backus-Naur Form syntax. Non-termina
    "[" extended_object_sequence "]"
    -

    Instantiated objects

    +

    Instantiated objects

    instantiated_objects ::=
    instantiated_object |
    @@ -258,7 +258,7 @@ The Logtalk grammar is here described using Backus-Naur Form syntax. Non-termina
    "[" instantiated_object_sequence "]"
    -

    Specialized objects

    +

    Specialized objects

    specialized_objects ::=
    specialized_object |
    @@ -280,7 +280,7 @@ The Logtalk grammar is here described using Backus-Naur Form syntax. Non-termina
    "[" specialized_object_sequence "]"
    -

    Entity scope

    +

    Entity scope

    scope ::=
    "public" |
    @@ -289,7 +289,7 @@ The Logtalk grammar is here described using Backus-Naur Form syntax. Non-termina
    -

    Entity identifiers

    +

    Entity identifiers

    entity_identifiers ::=
    @@ -313,7 +313,7 @@ The Logtalk grammar is here described using Backus-Naur Form syntax. Non-termina
    "[" entity_identifier_sequence "]"
    -

    Object identifiers

    +

    Object identifiers

    object_identifiers ::=
    object_identifier |
    @@ -335,7 +335,7 @@ The Logtalk grammar is here described using Backus-Naur Form syntax. Non-termina
    "[" object_identifier_sequence "]"
    -

    Category identifiers

    +

    Category identifiers

    category_identifiers ::=
    category_identifier |
    @@ -356,7 +356,7 @@ The Logtalk grammar is here described using Backus-Naur Form syntax. Non-termina
    "[" category_identifier_sequence "]"
    -

    Protocol identifiers

    +

    Protocol identifiers

    protocol_identifiers ::=
    protocol_identifier |
    @@ -379,7 +379,7 @@ The Logtalk grammar is here described using Backus-Naur Form syntax. Non-termina
    -

    Source file names

    +

    Source file names

    source_file_names ::=
    @@ -411,9 +411,9 @@ The Logtalk grammar is here described using Backus-Naur Form syntax. Non-termina -

    Directives

    +

    Directives

    -

    Source file directives

    +

    Source file directives

    source_file_directives ::=
    source_file_directive |
    @@ -426,7 +426,7 @@ The Logtalk grammar is here described using Backus-Naur Form syntax. Non-termina
    operator_directive
    -

    Object directives

    +

    Object directives

    object_directives ::=
    object_directive |
    @@ -444,7 +444,7 @@ The Logtalk grammar is here described using Backus-Naur Form syntax. Non-termina
    predicate_directives
    -

    Category directives

    +

    Category directives

    category_directives ::=
    category_directive |
    @@ -461,7 +461,7 @@ The Logtalk grammar is here described using Backus-Naur Form syntax. Non-termina
    predicate_directives
    -

    Protocol directives

    +

    Protocol directives

    protocol_directives ::=
    protocol_directive |
    @@ -475,7 +475,7 @@ The Logtalk grammar is here described using Backus-Naur Form syntax. Non-termina
    predicate_directives
    -

    Predicate directives

    +

    Predicate directives

    predicate_directives ::=
    predicate_directive |
    @@ -624,12 +624,12 @@ The Logtalk grammar is here described using Backus-Naur Form syntax. Non-termina
    number_of_solutions ::=
    "zero" | "zero_or_one" | "zero_or_more" | "one" | "one_or_more" | "error"
    -
    -
    meta_predicate_mode_indicator ::=
    +
    +
    meta_predicate_mode_indicator ::=
    atom "(" meta_predicate_terms ")"
    -
    -
    meta_predicate_terms ::=
    +
    +
    meta_predicate_terms ::=
    meta_predicate_term |
    meta_predicate_term "," meta_predicate_terms
    @@ -655,7 +655,7 @@ The Logtalk grammar is here described using Backus-Naur Form syntax. Non-termina
    -

    Clauses and goals

    +

    Clauses and goals

    goal ::=
    @@ -708,32 +708,32 @@ The Logtalk grammar is here described using Backus-Naur Form syntax. Non-termina
    "{" callable "}"
    -

    Entity properties

    +

    Entity properties

    -
    category_property ::=
    +
    category_property ::=
    "static" |
    "dynamic" |
    "built_in" |
    "synchronized"
    -
    -
    object_property ::=
    +
    +
    object_property ::=
    "static" |
    "dynamic" |
    "built_in" |
    "synchronized" |
    "threaded"
    -
    -
    protocol_property ::=
    +
    +
    protocol_property ::=
    "static" |
    "dynamic" |
    "built_in"
    -

    Predicate properties

    +

    Predicate properties

    predicate_property ::=
    @@ -754,7 +754,7 @@ The Logtalk grammar is here described using Backus-Naur Form syntax. Non-termina
    Copyright © Paulo Moura — Logtalk.org
    - Last updated on: December 14, 2006 + Last updated on: April 14, 2007
    previous | glossary | next
    diff --git a/Logtalk/manuals/refman/index.html b/Logtalk/manuals/refman/index.html index ee49936d0..d9054ed2c 100644 --- a/Logtalk/manuals/refman/index.html +++ b/Logtalk/manuals/refman/index.html @@ -24,52 +24,52 @@

    Grammar

    -
    Compilation units
    -
    Object definition
    -
    Category definition
    -
    Protocol definition
    +
    Compilation units
    +
    Object definition
    +
    Category definition
    +
    Protocol definition
    -
    Entity relations
    -
    Implemented protocols
    -
    Extended protocols
    -
    Imported categories
    -
    Extended objects
    -
    Instantiated objects
    -
    Specialized objects
    -
    Entity scope
    +
    Entity relations
    +
    Implemented protocols
    +
    Extended protocols
    +
    Imported categories
    +
    Extended objects
    +
    Instantiated objects
    +
    Specialized objects
    +
    Entity scope
    -
    Entity identifiers
    -
    Object identifiers
    -
    Category identifiers
    -
    Protocol identifiers
    +
    Entity identifiers
    +
    Object identifiers
    +
    Category identifiers
    +
    Protocol identifiers
    -
    Source file names
    +
    Source file names
    -
    Directives
    -
    Object directives
    -
    Category directives
    -
    Protocol directives
    -
    Predicate directives
    +
    Directives
    +
    Object directives
    +
    Category directives
    +
    Protocol directives
    +
    Predicate directives
    -
    Clauses
    +
    Clauses
    -
    Entity properties
    +
    Entity properties
    -
    Predicate properties
    +
    Predicate properties

    Directives

    @@ -214,7 +214,7 @@

    Built-in methods

    -

    Local methods

    +

    Execution context methods

    parameter/2
    @@ -293,10 +293,22 @@
    {}/1
    +

    Context-switching calls

    + +
    +
    <</2
    +
    + +

    Direct calls of category predicates

    + +
    +
    :/1
    +
    +
    Copyright © Paulo Moura — Logtalk.org
    - Last updated on: March 24, 2007 + Last updated on: June 8, 2007
    glossary
    diff --git a/Logtalk/manuals/refman/methods/abolish1.html b/Logtalk/manuals/refman/methods/abolish1.html index c769145bf..898ac8eae 100644 --- a/Logtalk/manuals/refman/methods/abolish1.html +++ b/Logtalk/manuals/refman/methods/abolish1.html @@ -19,8 +19,7 @@
    contents > reference manual > built-in methods
    -

    abolish/1

    - +

    abolish/1

    Description

    diff --git a/Logtalk/manuals/refman/methods/after3.html b/Logtalk/manuals/refman/methods/after3.html index 09937a0e1..8bd03c7d9 100644 --- a/Logtalk/manuals/refman/methods/after3.html +++ b/Logtalk/manuals/refman/methods/after3.html @@ -19,8 +19,7 @@
    contents > reference manual > built-in methods
    -

    after/3

    - +

    after/3

    Description

    diff --git a/Logtalk/manuals/refman/methods/asserta1.html b/Logtalk/manuals/refman/methods/asserta1.html index 8e2f4379c..0a36fded1 100644 --- a/Logtalk/manuals/refman/methods/asserta1.html +++ b/Logtalk/manuals/refman/methods/asserta1.html @@ -19,8 +19,7 @@
    contents > reference manual > built-in methods
    -

    asserta/1

    - +

    asserta/1

    Description

    diff --git a/Logtalk/manuals/refman/methods/assertz1.html b/Logtalk/manuals/refman/methods/assertz1.html index 0faf54202..8ecf329d2 100644 --- a/Logtalk/manuals/refman/methods/assertz1.html +++ b/Logtalk/manuals/refman/methods/assertz1.html @@ -19,8 +19,7 @@
    contents > reference manual > built-in methods
    -

    assertz/1

    - +

    assertz/1

    Description

    diff --git a/Logtalk/manuals/refman/methods/bagof3.html b/Logtalk/manuals/refman/methods/bagof3.html index b36a6662e..7b6da6906 100644 --- a/Logtalk/manuals/refman/methods/bagof3.html +++ b/Logtalk/manuals/refman/methods/bagof3.html @@ -19,8 +19,7 @@
    contents > reference manual > built-in methods
    -

    bagof/3

    - +

    bagof/3

    Description

    diff --git a/Logtalk/manuals/refman/methods/before3.html b/Logtalk/manuals/refman/methods/before3.html index b908960d5..94adada4b 100644 --- a/Logtalk/manuals/refman/methods/before3.html +++ b/Logtalk/manuals/refman/methods/before3.html @@ -19,8 +19,7 @@
    contents > reference manual > built-in methods
    -

    before/3

    - +

    before/3

    Description

    diff --git a/Logtalk/manuals/refman/methods/call1.html b/Logtalk/manuals/refman/methods/call1.html index 7617ac3e4..b07f23324 100644 --- a/Logtalk/manuals/refman/methods/call1.html +++ b/Logtalk/manuals/refman/methods/call1.html @@ -19,8 +19,7 @@
    contents > reference manual > built-in methods
    -

    call/N

    - +

    call/N

    Description

    diff --git a/Logtalk/manuals/refman/methods/clause2.html b/Logtalk/manuals/refman/methods/clause2.html index 429d1d42e..c505a2d50 100644 --- a/Logtalk/manuals/refman/methods/clause2.html +++ b/Logtalk/manuals/refman/methods/clause2.html @@ -19,8 +19,7 @@
    contents > reference manual > built-in methods
    -

    clause/2

    - +

    clause/2

    Description

    diff --git a/Logtalk/manuals/refman/methods/current_predicate1.html b/Logtalk/manuals/refman/methods/current_predicate1.html index 804b4d9a0..14ffed1a5 100644 --- a/Logtalk/manuals/refman/methods/current_predicate1.html +++ b/Logtalk/manuals/refman/methods/current_predicate1.html @@ -19,8 +19,7 @@
    contents > reference manual > built-in methods
    -

    current_predicate/1

    - +

    current_predicate/1

    Description

    diff --git a/Logtalk/manuals/refman/methods/expand_term2.html b/Logtalk/manuals/refman/methods/expand_term2.html index f30af8765..d75687c40 100644 --- a/Logtalk/manuals/refman/methods/expand_term2.html +++ b/Logtalk/manuals/refman/methods/expand_term2.html @@ -19,8 +19,7 @@
    contents > reference manual > built-in methods
    -

    expand_term/2

    - +

    expand_term/2

    Description

    diff --git a/Logtalk/manuals/refman/methods/findall3.html b/Logtalk/manuals/refman/methods/findall3.html index 081fb9969..61fd559a4 100644 --- a/Logtalk/manuals/refman/methods/findall3.html +++ b/Logtalk/manuals/refman/methods/findall3.html @@ -19,8 +19,7 @@
    contents > reference manual > built-in methods
    -

    findall/3

    - +

    findall/3

    Description

    diff --git a/Logtalk/manuals/refman/methods/forall2.html b/Logtalk/manuals/refman/methods/forall2.html index 0e92de3bd..369c4d30e 100644 --- a/Logtalk/manuals/refman/methods/forall2.html +++ b/Logtalk/manuals/refman/methods/forall2.html @@ -19,8 +19,7 @@
    contents > reference manual > built-in methods
    -

    forall/2

    - +

    forall/2

    Description

    diff --git a/Logtalk/manuals/refman/methods/parameter2.html b/Logtalk/manuals/refman/methods/parameter2.html index 7c979ccff..a20cc9469 100644 --- a/Logtalk/manuals/refman/methods/parameter2.html +++ b/Logtalk/manuals/refman/methods/parameter2.html @@ -19,8 +19,7 @@
    contents > reference manual > built-in methods
    -

    parameter/2

    - +

    parameter/2

    Description

    diff --git a/Logtalk/manuals/refman/methods/phrase2.html b/Logtalk/manuals/refman/methods/phrase2.html index 4aae6392a..2be47ff27 100644 --- a/Logtalk/manuals/refman/methods/phrase2.html +++ b/Logtalk/manuals/refman/methods/phrase2.html @@ -19,8 +19,7 @@
    contents > reference manual > built-in methods
    -

    phrase/2

    - +

    phrase/2

    Description

    diff --git a/Logtalk/manuals/refman/methods/phrase3.html b/Logtalk/manuals/refman/methods/phrase3.html index bc70d4a2a..aa9a5c536 100644 --- a/Logtalk/manuals/refman/methods/phrase3.html +++ b/Logtalk/manuals/refman/methods/phrase3.html @@ -19,8 +19,7 @@
    contents > reference manual > built-in methods
    -

    phrase/3

    - +

    phrase/3

    Description

    diff --git a/Logtalk/manuals/refman/methods/predicate_property2.html b/Logtalk/manuals/refman/methods/predicate_property2.html index 553d64d4c..2fc96fa26 100644 --- a/Logtalk/manuals/refman/methods/predicate_property2.html +++ b/Logtalk/manuals/refman/methods/predicate_property2.html @@ -19,8 +19,7 @@
    contents > reference manual > built-in methods
    -

    predicate_property/2

    - +

    predicate_property/2

    Description

    diff --git a/Logtalk/manuals/refman/methods/retract1.html b/Logtalk/manuals/refman/methods/retract1.html index 8f9311edf..40cc93528 100644 --- a/Logtalk/manuals/refman/methods/retract1.html +++ b/Logtalk/manuals/refman/methods/retract1.html @@ -19,7 +19,7 @@
    contents > reference manual > built-in methods
    -

    retract/1

    +

    retract/1

    Description

    diff --git a/Logtalk/manuals/refman/methods/retractall1.html b/Logtalk/manuals/refman/methods/retractall1.html index bdcc82c1c..bb59562f9 100644 --- a/Logtalk/manuals/refman/methods/retractall1.html +++ b/Logtalk/manuals/refman/methods/retractall1.html @@ -19,8 +19,7 @@
    contents > reference manual > built-in methods
    -

    retractall/1

    - +

    retractall/1

    Description

    diff --git a/Logtalk/manuals/refman/methods/self1.html b/Logtalk/manuals/refman/methods/self1.html index 72d21715a..e9f80ed94 100644 --- a/Logtalk/manuals/refman/methods/self1.html +++ b/Logtalk/manuals/refman/methods/self1.html @@ -19,8 +19,7 @@
    contents > reference manual > built-in methods
    -

    self/1

    - +

    self/1

    Description

    diff --git a/Logtalk/manuals/refman/methods/sender1.html b/Logtalk/manuals/refman/methods/sender1.html index 72e2e1118..8fd5683a0 100644 --- a/Logtalk/manuals/refman/methods/sender1.html +++ b/Logtalk/manuals/refman/methods/sender1.html @@ -19,8 +19,7 @@
    contents > reference manual > built-in methods
    -

    sender/1

    - +

    sender/1

    Description

    diff --git a/Logtalk/manuals/refman/methods/setof3.html b/Logtalk/manuals/refman/methods/setof3.html index be43f1bed..a9e30bb78 100644 --- a/Logtalk/manuals/refman/methods/setof3.html +++ b/Logtalk/manuals/refman/methods/setof3.html @@ -19,8 +19,7 @@
    contents > reference manual > built-in methods
    -

    setof/3

    - +

    setof/3

    Description

    diff --git a/Logtalk/manuals/refman/methods/term_expansion2.html b/Logtalk/manuals/refman/methods/term_expansion2.html index bf8edc483..bc5749acd 100644 --- a/Logtalk/manuals/refman/methods/term_expansion2.html +++ b/Logtalk/manuals/refman/methods/term_expansion2.html @@ -19,8 +19,7 @@
    contents > reference manual > built-in methods
    -

    term_expansion/2

    - +

    term_expansion/2

    Description

    diff --git a/Logtalk/manuals/refman/methods/this1.html b/Logtalk/manuals/refman/methods/this1.html index 0338ddc81..60deb47e2 100644 --- a/Logtalk/manuals/refman/methods/this1.html +++ b/Logtalk/manuals/refman/methods/this1.html @@ -19,7 +19,7 @@
    contents > reference manual > built-in methods
    -

    this/1

    +

    this/1

    Description

    diff --git a/Logtalk/manuals/refman/refman.header b/Logtalk/manuals/refman/refman.header index c6b7bcf31..36f41837e 100644 --- a/Logtalk/manuals/refman/refman.header +++ b/Logtalk/manuals/refman/refman.header @@ -27,7 +27,7 @@
    -

    Logtalk 2.29.5

    +

    Logtalk 2.30.1

    Reference Manual

    Copyright © Paulo Moura

    @@ -35,7 +35,7 @@
    http://logtalk.org/

    -

    Last updated on March 24, 2007

    +

    Last updated on June 8, 2007

    diff --git a/Logtalk/manuals/refman/refman.sh b/Logtalk/manuals/refman/refman.sh index a77a5a029..2767503a2 100755 --- a/Logtalk/manuals/refman/refman.sh +++ b/Logtalk/manuals/refman/refman.sh @@ -1,13 +1,13 @@ #!/bin/bash -## ================================================================= -## Logtalk - Object oriented extension to Prolog -## Release 2.29.5 +## ================================================================ +## Logtalk - Open source object-oriented logic programming language +## Release 2.30.1 ## ## Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. -## ================================================================= +## ================================================================ -css2xslfo=/Applications/XML/CSSToXSLFO/css2xslfo1_4.jar +css2xslfo=/Applications/XML/CSSToXSLFO/css2xslfo1_4_2.jar xslt_proc=xsltproc # xslt_proc=xalan @@ -114,6 +114,8 @@ eval $xslt_proc -o control/to_object2.section refman.xsl control/to_object2.html eval $xslt_proc -o control/to_self1.section refman.xsl control/to_self1.html eval $xslt_proc -o control/to_super1.section refman.xsl control/to_super1.html eval $xslt_proc -o control/external1.section refman.xsl control/external1.html +eval $xslt_proc -o control/context2.section refman.xsl control/context2.html +eval $xslt_proc -o control/direct1.section refman.xsl control/direct1.html cat -s \ refman.header \ @@ -216,6 +218,8 @@ cat -s \ control/to_self1.section \ control/to_super1.section \ control/external1.section \ + control/context2.section \ + control/direct1.section \ refman.footer \ > refman.html diff --git a/Logtalk/manuals/tutorial/attributes.html b/Logtalk/manuals/tutorial/attributes.html index 6a90a0998..c1b738000 100644 --- a/Logtalk/manuals/tutorial/attributes.html +++ b/Logtalk/manuals/tutorial/attributes.html @@ -33,7 +33,7 @@ In this example, we will illustrate the use of: by defining a category that implements a set of predicates for handling dynamic object attributes.

    -

    Defining a category

    +

    Defining a category

    We want to define a set of predicates to handle dynamic object attributes. We need public predicates to set, get, and delete attributes, and a private dynamic predicate to store the attributes values. Let us name these predicates set_attribute/2 and get_attribute/2, for getting and setting an attribute value, del_attribute/2 and del_attributes/2, for deleting attributes, and attribute_/2, for storing the attributes values. @@ -92,7 +92,7 @@ We have two new directives, +

    Importing the category

    We reuse a category's predicates by importing them into an object: @@ -120,7 +120,7 @@ Attribute = name, Value = paulo ; Attribute = gender, Value = male ; no -

    Summary

    +

    Summary

    • Categories are similar to objects: we just write our predicate directives and definitions bracketed by opening and ending category directives.
      • diff --git a/Logtalk/manuals/tutorial/lists.html b/Logtalk/manuals/tutorial/lists.html index 51788e674..0a369b819 100644 --- a/Logtalk/manuals/tutorial/lists.html +++ b/Logtalk/manuals/tutorial/lists.html @@ -32,7 +32,7 @@ In this example, we will illustrate the use of: by using common list utility predicates.

      -

      Defining a list object

      +

      Defining a list object

      We will start by defining an object, list, containing predicate definitions for some common list predicates like append/3, length/2 and member/2: @@ -100,7 +100,7 @@ uncaught exception: The error term describes the type of error, the message that caused the exception, and the sender of the message (in this case, the pseudo-object user because we are sending the message from the top-level interpreter).

      -

      Defining a list protocol

      +

      Defining a list protocol

      As we saw in the above example, a Logtalk object may contain predicate directives and predicate definitions (clauses). The set of predicate directives defines what we call the object's protocol or interface. An interface may have several implementations. For instance, we may want to define a new object that implements the list predicates using difference lists. However, we do not want to repeat the predicate directives in the new object. Therefore, what we need is to split the object's protocol from the object's implementation by defining a new Logtalk entity known as a protocol. Logtalk protocols are compilations units, at the same level as objects and categories. That said, let us define a listp protocol: @@ -151,7 +151,7 @@ The protocol declared in listp may now be alternatively implemented :- end_object. -

      Summary

      +

      Summary

      • It is easy to define a simple object: just put your Prolog code inside starting and ending object directives and add the necessary scope directives. The object will be self-defining and ready to use.
        • diff --git a/Logtalk/manuals/tutorial/profiling.html b/Logtalk/manuals/tutorial/profiling.html index 5c77a25e1..a37aa5768 100644 --- a/Logtalk/manuals/tutorial/profiling.html +++ b/Logtalk/manuals/tutorial/profiling.html @@ -32,7 +32,7 @@ In this example, we will illustrate the use of: by defining a simple profiler that prints the starting and ending time for processing a message sent to an object.

        -

        Messages as events

        +

        Messages as events

        In a pure object-oriented system, all computations start by sending messages to objects. We can thus define an event as the sending of a message to an object. An event can then be specified by the tuple (Object, Message, Sender). This definition can be refined by interpreting the sending of a message and the return of the control to the object that has sent the message as two distinct events. We call these events respectively before and after. Therefore, we end up by representing an event by the tuple (Event, Object, Message, Sender). For instance, if we send the message: @@ -53,7 +53,7 @@ Note that the second event is only generated if the message succeeds. If the mes Events are automatically generated by the message sending mechanisms for each public message sent using the ::/2 operator.

        -

        Profilers as monitors

        +

        Profilers as monitors

        A monitor is an object that reacts whenever a spied event occurs. The monitor actions are defined by two event handlers: before/3 for before events and after/3 for after events. These predicates are automatically called by the message sending mechanisms when an event registered for the monitor occurs. These event handlers are declared as public predicates in the monitoring built-in protocol. @@ -120,7 +120,7 @@ yes This call will abolish all events defined over the object foo assigned to the stop_watch monitor.

        -

        Summary

        +

        Summary

        • An event is defined as the sending of a (public) message to an object.
          • diff --git a/Logtalk/manuals/tutorial/reflection.html b/Logtalk/manuals/tutorial/reflection.html index 2eed946f7..521a163ed 100644 --- a/Logtalk/manuals/tutorial/reflection.html +++ b/Logtalk/manuals/tutorial/reflection.html @@ -28,7 +28,7 @@ When compiling an object, Logtalk distinguishes prototypes from instance or clas In this example, we are going to define the basis for a reflective class-based system, based on an extension of the ideas presented in [Cointe 87]. This extension provides, along with root objects for the instantiation and specialization hierarchies, explicit support for abstract classes [Moura 94].

          -

          Defining the base classes

          +

          Defining the base classes

          We will start by defining three classes: object, abstract_class, and class. The class object will contain all predicates common to all objects. It will be the root of the inheritance graph: @@ -63,7 +63,7 @@ The class class specializes abstract_class by adding p Note that all three objects are instances of class class. The instantiation and specialization relationships are chosen so that each object may use the predicates defined in itself and in the other two objects, with no danger of method lookup endless loops.

          -

          Summary

          +

          Summary

          • An object that does not instantiate or specialize other objects is always compiled as a prototype.
            • diff --git a/Logtalk/manuals/userman/categories.html b/Logtalk/manuals/userman/categories.html index 3a490c1fa..8b5fe1aa9 100644 --- a/Logtalk/manuals/userman/categories.html +++ b/Logtalk/manuals/userman/categories.html @@ -19,7 +19,7 @@
            contents > user manual
            -

            Categories

            +

            Categories

            Categories provide a way to encapsulate a set of related predicate declarations and definitions that do not represent an object and that only make sense when composed with other predicates. Categories may also be used to break a complex object in functional units. A category can be imported by several objects (without code duplication), including objects participating in prototype or class-based hierarchies. This concept of categories shares some ideas with Smalltalk-80 functional categories [Goldberg 83], Flavors mix-ins [Moon 86] (without necessarily implying multi-inheritance) and Objective-C categories [Cox 86]. @@ -28,13 +28,13 @@ Categories provide a way to encapsulate a set of related predicate declarations There are no pre-defined categories in Logtalk.

            -

            Defining a new category

            +

            Defining a new category

            -We can define a new object in the same way we write Prolog code: by using a text editor. Logtalk source files may contain one or more objects, categories, or protocols. If you prefer to define each entity in its own source file, it is recommended that the file be named after the category. By default, all Logtalk source files use the extension .lgt but this is optional and can be set in the configuration files. Compiled source files (by the Logtalk preprocessor) have, by default, a .pl extension. Again, this can be set to match the needs of a particular Prolog compiler in the corresponding configuration file. For instance, we may define a category named documenting and save it in a documenting.lgt source file that will be compiled to a documenting.pl Prolog file. +We can define a new object in the same way we write Prolog code: by using a text editor. Logtalk source files may contain one or more objects, categories, or protocols. If you prefer to define each entity in its own source file, it is recommended that the file be named after the category. By default, all Logtalk source files use the extension .lgt but this is optional and can be set in the configuration files. Intermediate Prolog source files (generated by the Logtalk compiler) have, by default, a .pl extension. Again, this can be set to match the needs of a particular Prolog compiler in the corresponding configuration file. For instance, we may define a category named documenting and save it in a documenting.lgt source file that will be compiled to a documenting.pl Prolog file.

            -Category names must be atoms. Objects, categories, and protocols share the same name space: we can not have a category with the same name as an object or a protocol. +Category names must be atoms. Objects, categories, and protocols share the same name space: we cannot have a category with the same name as an object or a protocol.

            Category code (directives and predicates) is textually encapsulated by using two Logtalk directives: category/1-3 and end_category/0. The most simple category will be one that is self-contained, not depending on any other Logtalk entity: @@ -86,7 +86,7 @@ Categories cannot inherit from objects. In addition, categories cannot contain c Each object importing this category will have its own attribute_/2 private, dynamic predicate. The predicates attribute/2, set_attribute/2, and del_attribute/2 always access and modify the dynamic predicate contained in the object receiving the corresponding messages.

            -

            Finding defined categories

            +

            Finding defined categories

            We can find, by backtracking, all defined categories by using the current_category/1 Logtalk built-in predicate with an uninstantiated variable: @@ -96,7 +96,7 @@ We can find, by backtracking, all defined categories by using the +

            Creating a new category in runtime

            A category can be dynamically created at runtime by using the create_category/4 built-in predicate: @@ -133,7 +133,7 @@ is equivalent to compiling and loading the category: If we need to create a lot of (dynamic) categories at runtime, then is best to to define a metaclass or a prototype with a predicate that will call this built-in predicate in order to provide more sophisticated behavior.

            -

            Abolishing an existing category

            +

            Abolishing an existing category

            Dynamic categories can be abolished using the abolish_category/1 built-in predicate: @@ -143,13 +143,13 @@ Dynamic categories can be abolished using the +

            Category directives

            Category directives are used to set initialization goals and category properties and to document a category dependencies on other Logtalk entities.

            -

            Category initialization

            +

            Category initialization

            We can define a goal to be executed as soon as a category is (compiled and) loaded to memory with the initialization/1 directive: @@ -159,7 +159,7 @@ We can define a goal to be executed as soon as a category is (compiled and) load The argument can be any valid Prolog or Logtalk goal, including a message sending call.

            -

            Dynamic categories

            +

            Dynamic categories

            As usually happens with Prolog code, a category can be either static or dynamic. A category created during the execution of a program is always dynamic. A category defined in a file can be either dynamic or static. Dynamic categories are declared by using the dynamic/0 directive in the category source code: @@ -169,7 +169,7 @@ As usually happens with Prolog code, a category can be either static or dynamic. The directive must precede any predicate directives or clauses. Please be aware that using dynamic code implies a performance hit when compared to static code. We should only use dynamic categories when these need to be abolished during program execution.

            -

            Category dependencies

            +

            Category dependencies

            Besides the relations declared in the category opening directive, the predicate definitions contained in the category may imply other dependencies. This can be documented by using the calls/1 and the uses/1 directives. @@ -186,7 +186,7 @@ If a predicate definition sends a message to a specific object, this dependence These two directives can be used by the Logtalk runtime to ensure that all needed entities are loaded when running an application.

            -

            Category documentation

            +

            Category documentation

            A category can be documented with arbitrary user-defined information by using the info/1 directive: @@ -196,7 +196,7 @@ A category can be documented with arbitrary user-defined information by using th See the documenting Logtalk programs session for details.

            -

            Category relationships

            +

            Category relationships

            Logtalk provides two sets of built-in predicates that enable us to query the system about the possible relationships that a category can have with other entities. @@ -229,7 +229,7 @@ or, if we want to know the importation scope: Note that a category may be imported by several objects (or other categories).

            -

            Category properties

            +

            Category properties

            We can find the properties of defined categories by calling the built-in predicate category_property/2: @@ -239,7 +239,7 @@ We can find the properties of defined categories by calling the built-in predica A category may have the property static, dynamic, or built_in. Dynamic categories can be abolished in runtime by calling the abolish_category/1 built-in predicate. A category may also have the property synchronized, which is related to multi-threading programming.

            -

            Importing categories

            +

            Importing categories

            Any number of objects can import a category. In addition, an object may import any number of categories. The syntax is very simple: @@ -270,10 +270,56 @@ Omitting the scope keyword is equivalent to writing: ... :- end_object. +

            Using category predicates

            + +

            +Category predicates can be called from within an object using either the message sending mechanisms or a direct call. Consider the following category: +

            +
            :- category(output).
+
+    :- public(out/1).
+
+    out(X) :-
+        writeq(X), nl.
+
+:- end_category.
            +

            +Using the message sending mechanisms, the predicate out/1 can be called from within an object importing the category by simply sending a message to self. For example: +

            +
            :- object(worker,
+    imports(output)).
+
+    ...
+    do(Task) :-
+        execute(Task, Result),
+        ::out(Result).
+    ...
+
+:- end_object.
            +

            +This is the recommended way of calling category predicates as it supports the specialization/redefinition of the category predicate in a descendant object (as the predicate declaration and definition lookups will start from self). Messages to self usually imply the use of dynamic binding as the actual object that will receive the message is only known at runtime. This translates to a small performance penalty when compared with calls to local object predicates. +

            +

            +It is also possible to call category predicates such that the predicate declaration and definition lookups will start from this instead of self by using the :/1 control construct. For example: +

            +
            :- object(worker,
+    imports(output)).
+
+    ...
+    do(Task) :-
+        execute(Task, Result),
+        :out(Result).
+    ...
+
+:- end_object.
            +

            +This alternative should only be used when the user knows a priori that the category predicates will not be specialized or redefined by descendant objects of the object importing the category. Its advantage is that, whenever possible, the Logtalk compiler will optimize the calls by using static binding. However, when static binding is not possible due to the lack of sufficient information at compilation time, the performance may be worse than calling the category predicate using a message to self due to the lack of a caching mechanism. +

            +
            Copyright © Paulo Moura — Logtalk.org
            - Last updated on: January 15, 2007 + Last updated on: June 8, 2007
            previous | glossary | next
            diff --git a/Logtalk/manuals/userman/documenting.html b/Logtalk/manuals/userman/documenting.html index 700e0d5a2..b11528bdb 100644 --- a/Logtalk/manuals/userman/documenting.html +++ b/Logtalk/manuals/userman/documenting.html @@ -19,7 +19,7 @@
            contents > user manual
            -

            Documenting Logtalk programs

            +

            Documenting Logtalk programs

            Logtalk automatically generates a documentation file for each compiled entity (object, protocol, or category) in XML format. Contents of the XML file include the entity name, type, and compilation mode (static or dynamic), the entity relations with other entities, and a description of any declared predicates (name, compilation mode, scope, ...). @@ -28,13 +28,13 @@ Logtalk automatically generates a documentation file for each compiled entity (o The XML documentation files can be enriched with arbitrary user-defined information, either about an entity or about its predicates, by using the two directives described below.

            -

            Documenting directives

            +

            Documenting directives

            Logtalk supports two documentation directives for providing arbitrary user-defined information about an entity or a predicate. These two directives complement other Logtalk directives that also provide important documentation information like uses/1, calls/1, or mode/2.

            -

            Entity directives

            +

            Entity directives

            Arbitrary user-defined entity information can be represented using the info/1 directive: @@ -79,7 +79,7 @@ For example: Use only the keywords that make sense for your application and remember that you are free to invent your own keywords.

            -

            Predicate directives

            +

            Predicate directives

            Arbitrary user-defined predicate information can be represented using the @@ -119,7 +119,7 @@ For example: Use only the keywords that make sense for your application and remember that you are free to invent your own keywords.

            -

            Processing and viewing documenting files

            +

            Processing and viewing documenting files

            The XML documenting files are (by default) automatically generated when you compile a Logtalk entity. For example, assuming the default filename extensions, compiling a trace object and a sort(_) parametric object contained in a source file will result in trace_0.xml and sort_1.xml XML files. diff --git a/Logtalk/manuals/userman/errors.html b/Logtalk/manuals/userman/errors.html index 95bdc2d12..f9c0a179e 100644 --- a/Logtalk/manuals/userman/errors.html +++ b/Logtalk/manuals/userman/errors.html @@ -19,7 +19,7 @@

            contents > user manual
            -

            Error handling

            +

            Error handling

            All error/exception handling is done in Logtalk by using the ISO defined catch/3 and throw/1 predicates [ISO 95]. Some Prolog compilers do not implement these predicates or, if they do, the implementation is not compatible with the standard. Furthermore, the nature of these predicates does not allow their definition by the user. For these reasons, we should check our Prolog compiler before trying to add error handling code to your Logtalk applications. @@ -44,79 +44,79 @@ For example:

            Compiler warnings and errors

            -The Logtalk preprocessor/compiler uses the read_term/3 ISO Prolog defined built-in predicate to read and process a Logtalk source file. One consequence of this is that invalid Prolog terms or syntax errors may abort the compilation process with limited information given to the user (due to the inherent limitations of the read_term/3 predicate). +The current Logtalk compiler uses the read_term/3 ISO Prolog defined built-in predicate to read and process a Logtalk source file. One consequence of this is that invalid Prolog terms or syntax errors may abort the compilation process with limited information given to the user (due to the inherent limitations of the read_term/3 predicate).

            -If all the (Prolog) terms in a source file are valid, then there is a set of errors or potential errors, described below, that the preprocessor will try to detect and report, depending on the used compiler flags (see the Installing and running Logtalk section of this manual for details). +If all the terms in a source file are valid, then there is a set of errors or potential errors, described below, that the compiler will try to detect and report, depending on the used compiler flags (see the Installing and running Logtalk section of this manual for details).

            -

            Unknown entities

            +

            Unknown entities

            -The Logtalk preprocessor/compiler will warn us of any referenced entity that is not currently loaded. The warning may reveal a misspell entity name or just an entity that it will be loaded next. +The Logtalk compiler will warn us of any referenced entity that is not currently loaded. The warning may reveal a misspell entity name or just an entity that it will be loaded next.

            -

            Singleton variables

            +

            Singleton variables

            -Singleton variables in a clause are often misspell variables and, as such, one of the most common errors when programming in Prolog. If your Prolog compiler complies with the Prolog ISO standard or at least supports the ISO predicate read_term/3 called with the option singletons(S), then the Logtalk preprocessor/compiler will warn us of any singleton it finds while compiling a Logtalk entity. +Singleton variables in a clause are often misspell variables and, as such, one of the most common errors when programming in Prolog. If your Prolog compiler complies with the Prolog ISO standard or at least supports the ISO predicate read_term/3 called with the option singletons(S), then the Logtalk compiler will warn us of any singleton it finds while compiling a Logtalk entity.

            -

            Redefinition of Prolog built-in predicates

            +

            Redefinition of Prolog built-in predicates

            -The Logtalk preprocessor/compiler will warn us of any redefinition of a Prolog built-in predicate inside an object or category. Sometimes the redefinition is intended. In other cases, the user may not be aware that the subjacent Prolog compiler may already provide the predicate as a built-in or we may want to ensure code portability among several Prolog compilers with different sets of built-in predicates. +The Logtalk compiler will warn us of any redefinition of a Prolog built-in predicate inside an object or category. Sometimes the redefinition is intended. In other cases, the user may not be aware that the subjacent Prolog compiler may already provide the predicate as a built-in or we may want to ensure code portability among several Prolog compilers with different sets of built-in predicates.

            -

            Redefinition of Logtalk built-in predicates

            +

            Redefinition of Logtalk built-in predicates

            Similar to the redefinition of Prolog built-in predicates, the Logtalk compiler will warn us if we try to redefine a Logtalk built-in. The redefinition will probably be an error in almost all (if not all) cases.

            -

            Redefinition of Logtalk built-in methods

            +

            Redefinition of Logtalk built-in methods

            An error will be thrown if we attempt to redefine a Logtalk built-in method inside an entity. The default behavior is to report the error and abort the compilation of the offending entity.

            -

            Misspell calls of local predicates

            +

            Misspell calls of local predicates

            A warning will be reported if Logtalk finds (in the body of a predicate definition) a call to a local predicate that is not defined, built-in (either in Prolog or in Logtalk) or declared dynamic. In most cases these calls are simple misspell errors.

            -

            Portability warnings

            +

            Portability warnings

            A warning will be reported if a predicate clause contains a call to a non-ISO defined built-in predicate.

            -

            Other warnings and errors

            +

            Other warnings and errors

            -The Logtalk preprocessor/compiler will throw an error if it finds a predicate clause or a directive that cannot be parsed. The default behavior is to report the error and abort the compilation of the offending entity. +The Logtalk compiler will throw an error if it finds a predicate clause or a directive that cannot be parsed. The default behavior is to report the error and abort the compilation of the offending entity.

            -

            Runtime errors

            +

            Runtime errors

            This session briefly describes runtime errors that result from misuse of Logtalk built-in predicates, built-in methods or from message sending. For a complete and detailed description of runtime errors please consult the Reference Manual.

            -

            Logtalk built-in predicates

            +

            Logtalk built-in predicates

            All Logtalk built-in predicates checks the type and mode of the calling arguments, throwing an exception in case of misuse.

            -

            Logtalk built-in methods

            +

            Logtalk built-in methods

            Every Logtalk built-in method checks the type and mode of the calling arguments, throwing an exception in case of misuse.

            -

            Message sending

            +

            Message sending

            The message sending mechanisms always check if the receiver of a message is a defined object and if the message corresponds to a declared predicate within the scope of the sender. @@ -125,7 +125,7 @@ The message sending mechanisms always check if the receiver of a message is a de

            Copyright © Paulo Moura — Logtalk.org
            - Last updated on: October 26, 2006 + Last updated on: April 14, 2007
            previous | glossary | next
            diff --git a/Logtalk/manuals/userman/events.html b/Logtalk/manuals/userman/events.html index 3960833d6..23999d438 100644 --- a/Logtalk/manuals/userman/events.html +++ b/Logtalk/manuals/userman/events.html @@ -19,7 +19,7 @@
            contents > user manual
            -

            Event-driven programming

            +

            Event-driven programming

            The addition of event-driven programming capacities to the Logtalk language [Moura 94] is based on a simple but powerful idea: @@ -47,13 +47,13 @@ With the integration between object-oriented and event-driven programming, we in

          • Provide a mechanism for easily defining method pre- and post-conditions that can be toggled using the events compiler option. The pre- and post-conditions may be defined in the same object containing the methods or distributed between several objects acting as method monitors.
          -

          Definitions

          +

          Definitions

          The words event and monitor have multiple meanings in computer science, so, to avoid misunderstandings, it is advisable that we start by defining them in the Logtalk context.

          -

          Event

          +

          Event

          In an object-oriented system, all computations start through message sending. It thus becomes quite natural to declare that the only event that can occur in this kind of system is precisely the sending of a message. An event can thus be represented by the ordered tuple (Object, Message, Sender). @@ -73,7 +73,7 @@ The implementation of the event notion in Logtalk enjoys the following propertie

          The notion of event allows the user not only to have the possibility of observing, but also of controlling and modifying an application behavior, namely by dynamically changing the observed events during program execution. It is our goal to provide the user with the possibility of modeling the largest possible number of situations.
    -

    Monitor

    +

    Monitor

    Complementary to the notion of event is the notion of monitor. A monitor is an object that is automatically notified by the message sending mechanisms whenever certain events occur. A monitor should naturally define the actions to be carried out whenever a monitored event occurs. @@ -92,19 +92,19 @@ The implementation of the monitor notion in Logtalk enjoys the following propert

    In other words, if the message contains uninstantiated variables, these are not affected by the acting of monitors associated to the event.
    -

    Event generation

    +

    Event generation

    For each message that is sent (using the ::/2 message sending mechanism) the runtime system automatically generates two events. The first — before event — is generated when the message is sent. The second — after event — is generated after the message has successfully been executed.

    -

    Communicating events to monitors

    +

    Communicating events to monitors

    Whenever a spied event occurs, the message sending mechanisms call the corresponding event handlers directly for all registered monitors. These calls are made bypassing the message sending primitives in order to avoid potential endless loops. The event handlers consist in user definitions for the public predicates declared in the monitoring built-in protocol (one for each event kind; see below for more details).

    -

    Performance concerns

    +

    Performance concerns

    Ideally, the existence of monitored messages should not affect the processing of the remaining messages. On the other hand, for each message that has been sent, the system must verify if its respective event is monitored. Whenever possible, this verification should be performed in constant time and independently from the number of monitored events. The events representation takes advantage of the first argument indexing performed by most Prolog compilers, which ensure — in the general case — an access in constant time. @@ -113,7 +113,7 @@ Ideally, the existence of monitored messages should not affect the processing of Event-support can be turned off on a per-object (or per-category) basis using the compiler flag events/1. With event-support turned off, Logtalk uses optimized code for processing message sending calls that skips the checking of monitored events, resulting in a small but measurable performance improvement.

    -

    Monitor semantics

    +

    Monitor semantics

    The established semantics for monitors actions consists on considering its success as a necessary condition so that a message can succeed: @@ -128,19 +128,19 @@ The established semantics for monitors actions consists on considering its succe Note that this is the most general choice. If we wish a transparent presence of monitors in a message processing, we just have to define the monitor actions in such a way that they never fail (which is very simple to accomplish).

    -

    Activation order of monitors

    +

    Activation order of monitors

    Ideally, whenever there are several monitors defined for the same event, the calling order should not interfere with the result. However, this is not always possible. In the case of an event of type before, the failure of a monitor prevents a message from being sent and prevents the execution of the remaining monitors. In case of an event of type after, a monitor failure will force backtracking over message execution. Different orders of monitor activation can therefore lead to different results if the monitor actions imply object modifications unrecoverable in case of backtracking. Therefore, the order for monitor activation must be always taken as arbitrary. In effect, to suppose or to try to impose a specific sequence implies a global knowledge of an application dynamics, which is not always possible. Furthermore, that knowledge can reveal itself as incorrect if there is any changing in the execution conditions. Note that, given the independence between monitors, it does not make sense that a failure forces backtracking over the actions previously executed.

    -

    Event handling

    +

    Event handling

    Logtalk provides three built-in predicates for event handling. These predicates enable you to find what events are defined, to define new events and to abolish events when they are no longer needed. If you plan to use events extensively in your application, then you should probably define a set of objects that use the built-in predicates described below to implement more sophisticated and high-level behavior.

    -

    Finding defined events

    +

    Finding defined events

    The events that are currently defined can be retrieved using the Logtalk built-in predicate current_event/5: @@ -150,7 +150,7 @@ The events that are currently defined can be retrieved using the Logtalk built-i Note that this predicate will return a set of matching events if some of the returned arguments are free variables or contain free variables.

    -

    Defining new events

    +

    Defining new events

    New events can be defined using the Logtalk built-in predicate define_events/5: @@ -160,7 +160,7 @@ New events can be defined using the Logtalk built-in predicate +

    Abolishing defined events

    Events that are no longer needed may be abolished using the abolish_events/5 built-in predicate: @@ -170,7 +170,7 @@ Events that are no longer needed may be abolished using the +

    Defining event handlers

    The monitoring built-in protocol declares two public predicates, before/3 and after/3, that are automatically called to handle before and after events. Any object that plays the role of monitor should define one or both of these event handler methods: diff --git a/Logtalk/manuals/userman/features.html b/Logtalk/manuals/userman/features.html index fee2e4dd5..d7d4f990a 100644 --- a/Logtalk/manuals/userman/features.html +++ b/Logtalk/manuals/userman/features.html @@ -19,7 +19,7 @@

    contents > user manual
    -

    Logtalk features

    +

    Logtalk features

    Some years ago, I decided that the best way to learn object-oriented programming was to build my own object-oriented language. Prolog always being my favorite language, I chose to extend it with object-oriented capabilities. Eventually this work has lead to the Logtalk system. The first public release of Logtalk 1.x occurred in February of 1995. Based on feedback by users and on the author subsequent work, the second major version went public in July of 1998. @@ -28,7 +28,7 @@ Some years ago, I decided that the best way to learn object-oriented programming Although this version of Logtalk shares many ideas and goals with previous 1.x versions, programs written for one version are not compatible with the other (however, conversion from previous versions can easily be accomplished in most cases). This is a consequence of the desire to have a more friendly system, with a very smooth learning curve, bringing Logtalk programming closer to traditional Prolog programming. There are, of course, also other important changes, that result in a more powerful and funnier system. Logtalk 2.x development provides the following features:

    -

    Integration of logic and object-oriented programming

    +

    Integration of logic and object-oriented programming

    @@ -39,7 +39,7 @@ In a more pragmatically view, Logtalk objects provide Prolog with the possibilit

    -

    Integration of event-driven and object-oriented programming

    +

    Integration of event-driven and object-oriented programming

    @@ -47,7 +47,7 @@ Event-driven programming enables the building of reactive systems, where computi

    -

    Support for component-based programming

    +

    Support for component-based programming

    @@ -55,7 +55,7 @@ Predicates can be encapsulated inside categories which can be imported

    -

    Support for both prototype and class-based systems

    +

    Support for both prototype and class-based systems

    @@ -63,7 +63,7 @@ Almost any (if not all) object-oriented languages available today are either cla

    -

    Support for multiple object hierarchies

    +

    Support for multiple object hierarchies

    @@ -71,7 +71,7 @@ Languages like Smalltalk-80 [Goldberg

    -

    Separation between interface and implementation

    +

    Separation between interface and implementation

    @@ -79,7 +79,7 @@ This is an expected (should we say standard ?) feature of almost any modern prog

    -

    Private, protected and public inheritance

    +

    Private, protected and public inheritance

    @@ -87,7 +87,7 @@ Logtalk supports private, protected and public inheritance in a similar way to C

    -

    Private, protected and public object predicates

    +

    Private, protected and public object predicates

    @@ -95,7 +95,7 @@ Logtalk supports data hiding by implementing private, protected and public objec

    -

    Parametric objects

    +

    Parametric objects

    @@ -103,15 +103,23 @@ Object names can be compound terms (instead of atoms), providing a way to parame

    -

    Smooth learning curve

    +

    High level multi-threading programming support

    -Logtalk has a smooth learning curve, by adopting standard Prolog syntax (using a preprocessor) and by enabling an incremental learning and use of most of its features. +High level multi-threading programming is available when running Logtalk with selected back-end Prolog compilers, allowing objects to support both synchronous and asynchronous messages. Logtalk allows programmers to take advantage of modern multi-processor and multi-core computers without bothering with the details of creating and destroying threads, implement thread communication, or synchronizing threads.

    -

    Compatibility with most Prologs and the ISO standard

    +

    Smooth learning curve

    + +
    +

    +Logtalk has a smooth learning curve, by adopting standard Prolog syntax and by enabling an incremental learning and use of most of its features. +

    +
    + +

    Compatibility with most Prologs and the ISO standard

    @@ -119,24 +127,24 @@ The Logtalk system has been designed to be compatible with most Prolog compilers

    -

    Performance

    +

    Performance

    The current Logtalk implementation works as a pre-processor: Logtalk source files are first compiled to Prolog source files, which are then compiled by the chosen Prolog compiler. Therefore, Logtalk performance necessarily depends on the back-end Prolog compiler. The Logtalk pre-processor respects the programmers choices when writing efficient code that takes advantage of tail recursion and first-argument indexing.

    -As an object-oriented language, Logtalk uses dynamic binding for matching messages and methods. Furthermore, Logtalk entities (objects, protocols, and categories) are independently compiled, allowing for a very flexible programming development. Entities can be edited, compiled, and loaded at runtime, without necessarily implying recompilation of all related entities. +As an object-oriented language, Logtalk uses both static binding and dynamic binding for matching messages and methods. Furthermore, Logtalk entities (objects, protocols, and categories) are independently compiled, allowing for a very flexible programming development. Entities can be edited, compiled, and loaded at runtime, without necessarily implying recompilation of all related entities.

    -The Logtalk runtime engine implements caching of method lookups (including messages to self and super calls), ensuring a performance level close to what could be achieved with static binding implementations. +When dynamic binding is used, the Logtalk runtime engine implements caching of method lookups (including messages to self and super calls), ensuring a performance level close to what could be achieved when using static binding.

    Copyright © Paulo Moura — Logtalk.org
    - Last updated on: October 26, 2006 + Last updated on: June 8, 2007
    previous | glossary | next
    diff --git a/Logtalk/manuals/userman/index.html b/Logtalk/manuals/userman/index.html index 0cd4668cc..aa3228aaf 100644 --- a/Logtalk/manuals/userman/index.html +++ b/Logtalk/manuals/userman/index.html @@ -57,6 +57,7 @@
    Private, protected, and public inheritance
    Private, protected, and public object predicates
    Parametric objects
    +
    High level multi-threading programming support
    Smooth learning curve
    Compatibility with most Prologs and the ISO standard
    Performance
    @@ -85,6 +86,8 @@
    Objects, prototypes, classes, and instances
    +
    Prototypes
    +
    Classes
    Defining a new object
    Parametric objects
    Finding defined objects
    @@ -136,6 +139,7 @@
    Category relationships
    Category properties
    Importing categories
    +
    Using category predicates

    Predicates

    @@ -206,7 +210,7 @@
    Enabling multi-threading support
    -
    Object threads
    +
    Object message queues
    Multi-threading built-in predicates
    Proving goals concurrently using threads
    Proving goals asynchronously using threads
    @@ -277,6 +281,7 @@
    Tracing program execution
    Debugging using spy points
    Debugging commands
    +
    Context-switching calls

    Programming in Logtalk

    @@ -295,7 +300,7 @@
    Copyright © Paulo Moura — Logtalk.org
    - Last updated on: March 24, 2007 + Last updated on: June 8, 2007
    glossary
    diff --git a/Logtalk/manuals/userman/inheritance.html b/Logtalk/manuals/userman/inheritance.html index 6355b2b0e..cca1f0e9d 100644 --- a/Logtalk/manuals/userman/inheritance.html +++ b/Logtalk/manuals/userman/inheritance.html @@ -19,49 +19,49 @@
    contents > user manual
    -

    Inheritance

    +

    Inheritance

    The inheritance mechanisms found on object-oriented programming languages allow us the specialization of previously defined objects, avoiding the unnecessary repetition of code. In the context of logic programming, we can interpret inheritance as a form of theory extension: an object will virtually contain, besides its own predicates, all the predicates inherited from other objects that are not redefined by itself.

    -

    Protocol inheritance

    +

    Protocol inheritance

    Protocol inheritance refers to the inheritance of predicate declarations (scope directives). These can be contained in objects, in protocols, or in categories. Logtalk supports single and multi-inheritance of protocols: an object or a category may implement several protocols and a protocol may extend several protocols.

    -

    Search order for prototype hierarchies

    +

    Search order for prototype hierarchies

    The search order for predicate declarations is first the object, second the implemented protocols (and the protocols that these may extend), third the imported categories (and the protocols that they may implement), and last the objects that the object extends. This search is performed in a depth-first way. When an object inherits two different declarations for the same predicate, by default only the first one will be considered.

    -

    Search order for class hierarchies

    +

    Search order for class hierarchies

    The search order for predicate declarations starts in the object classes. Following the classes declaration order, the search starts in the classes implemented protocols (and the protocols that these may extend), third the classes imported categories (and the protocols that they may implement), and last the superclasses of the object classes. This search is performed in a depth-first way. If the object inherits two different declarations for the same predicate, by default only the first one will be considered.

    -

    Implementation inheritance

    +

    Implementation inheritance

    Implementation inheritance refers to the inheritance of predicate definitions. These can be contained in objects or in categories. Logtalk supports multi-inheritance of implementation: an object may import several categories or extend, specialize, or instantiate several objects.

    -

    Search order for prototype hierarchies

    +

    Search order for prototype hierarchies

    The search order for predicate definitions is similar to the search for predicate declarations except that implemented protocols are ignored (they can only contain predicate directives).

    -

    Search order for class hierarchies

    +

    Search order for class hierarchies

    The search order for predicate definitions is similar to the search for predicate declarations except that implemented protocols are ignored (they can only contain predicate directives).

    -

    Inheritance versus predicate redefinition

    +

    Inheritance versus predicate redefinition

    When we define a predicate that is already inherited from other object, the inherited definitions are hidden by the new definitions. This is called overriding inheritance: a local definition overrides any inherited ones. For example, assume that we have the following two objects: @@ -103,7 +103,7 @@ yes However, we can explicitly program other behaviors. Let us see a few examples.

    -

    Specialization inheritance

    +

    Specialization inheritance

    Specialization of inherited definitions: the new definition uses the inherited definitions, adding to this new code. This is accomplished by calling the ^^/1 operator in the new definition. @@ -135,7 +135,7 @@ root init yes -

    Union inheritance

    +

    Union inheritance

    Union of the new with the inherited definitions: all the definitions are taken into account, the calling order being defined by the inheritance mechanisms. This can be accomplished by writing a clause that just calls, using the ^^/1 operator, the inherited definitions. The relative position of this clause among the other definition clauses sets the calling order for the local and inherited definitions. @@ -168,7 +168,7 @@ Foo = 2 ; no -

    Selective inheritance

    +

    Selective inheritance

    Hiding some of the inherited definitions, or differential inheritance: this form of inheritance is normally used in the representation of exceptions to generic definitions. Here we will need to use the ^^/1 operator to test and possibly reject some of the inherited definitions. @@ -201,7 +201,7 @@ Mode = walks ; no -

    Public, protected, and private inheritance

    +

    Public, protected, and private inheritance

    To make all public predicates declared via implemented protocols, importeds categories, or inherited objects protected or to make all public and protected predicates private we prefix the entity's name with the corresponding keyword. For instance: @@ -235,7 +235,7 @@ This is the same as: This way we ensure backward compatibility with older Logtalk versions and a simplified syntax when protected or private inheritance are not used.

    -

    Composition versus multiple inheritance

    +

    Composition versus multiple inheritance

    It is not possible to discuss inheritance mechanisms without referring to the long and probably endless debate on single versus multiple inheritance. The single inheritance mechanism can be implemented in an very efficient way, but it imposes several limitations on reusing, even if the multiple characteristics we intend to inherit are orthogonal. On the other hand, the multiple inheritance mechanisms are attractive in their apparent capability of modeling complex situations. However, they include a potential for conflict between inherited definitions whose variety does not allow a single and satisfactory solution for all the cases. diff --git a/Logtalk/manuals/userman/installing.html b/Logtalk/manuals/userman/installing.html index 7133ce8b3..5f05fc033 100644 --- a/Logtalk/manuals/userman/installing.html +++ b/Logtalk/manuals/userman/installing.html @@ -19,7 +19,7 @@

    contents > user manual
    -

    Installing Logtalk

    +

    Installing Logtalk

    This page provides an overview of Logtalk installation requirements and instructions and a description of the files contained on the Logtalk distribution. For detailed, up-to-date installation and configuration instructions, please see the README.txt, INSTALL.txt, and CUSTOMIZE.txt files distributed with Logtalk. The broad compatibility of Logtalk, both with Prolog compilers and operating-systems, together with all the possible user scenarios, means that installation can vary from very simple by running an installer or a couple of scripts to the need of patching both Logtalk and Prolog compilers to workaround the lack of strong Prolog standards. @@ -28,15 +28,15 @@ This page provides an overview of Logtalk installation requirements and instruct The preferred installation scenario is to have Logtalk installed in a system-wide location, thus available for all users, and a local copy of user-modifiable files on each user home directory (even when you are the single user of your computer). This scenario allows each user to independently customize Logtalk and to freely modify the provided programming examples. Logtalk installers, installation shell scripts, and Prolog integration scripts favor this installation scenario, although alternative installation scenarios are always possible.

    -

    Hardware & software requirements

    +

    Hardware & software requirements

    -

    Computer and operating system

    +

    Computer and operating system

    Logtalk is compatible with almost any computer/operating-system with a modern Prolog compiler available. Currently, the main development environment is an Apple MacBook Pro running MacOS X. Being written in Prolog and distributed in source form, the only issue regarding operating system compatibility are the end-of-line codes in the source text files!

    -

    Prolog compiler

    +

    Prolog compiler

    In writing Logtalk I have tried to follow the current ISO Prolog Part 1 standard whenever possible. Capabilities needed by Logtalk that are not defined in the ISO standard are: @@ -53,13 +53,13 @@ For optimal performance, Logtalk requires that the Prolog compiler supports [ISO 95], it is advisable that you try to use the most recent version of your favorite Prolog compiler.

    -

    Logtalk installers

    +

    Logtalk installers

    Logtalk installers are available for MacOS X, Linux, and Microsoft Windows 2000/XP/2003. Depending on the chosen installer, some tasks (e.g. setting environment variables or integrating Logtalk with some Prolog compilers) may need to be performed manually.

    -

    Source distribution

    +

    Source distribution

    Logtalk sources are available in a tar archive compressed with gzip, lgt2xxx.tgz. You may expand the archive by using a decompressing utility or by typing the following commands at the command-line: @@ -69,7 +69,7 @@ Logtalk sources are available in a tar archive compressed with lgt2xxx in your current directory. Almost all files in the Logtalk distribution are text files. Different operating-systems use different end-of-line codes for text files. Ensure that your decompressing utility convert the end-of-lines of all text files to match your operating system.

    -

    Directories and files organization

    +

    Directories and files organization

    In the Logtalk installation directory, you will find the following files and directories: @@ -112,6 +112,11 @@ In the Logtalk installation directory, you will find the following files and dir

    ... - other examples
    +
    +
    integration
    +
    NOTES.txt - notes on scripts for Logtalk integration with Prolog compilers
    +
    ... - Prolog integration scripts
    +
    libpaths
    NOTES.txt - description on how to setup library and examples paths
    @@ -133,8 +138,8 @@ In the Logtalk installation directory, you will find the following files and dir
    scripts
    -
    NOTES.txt - notes on scripts for Logtalk packaging, installation, and integration with Prolog compilers
    -
    ... - packaging, installation, and Prolog integration scripts
    +
    NOTES.txt - notes on scripts for Logtalk user setup, packaging, and installation
    +
    ... - packaging, installation, and setup scripts
    wenv
    @@ -148,14 +153,14 @@ In the Logtalk installation directory, you will find the following files and dir
    logtalk.dtd - Document Type Description file describing the structure of the XML files
    lgthtml.xsl - transformation style sheet to output HTML code from the XML files
    ... - other XSL files
    -
    lgt2html.sh - shell script for converting XML documenting files to PDF files
    +
    lgt2html.sh - shell script for converting XML documenting files to (X)HTML files
    ... - other script files
    -

    Configuration files

    +

    Configuration files

    -Configuration files provide the glue code between the Logtalk preprocessor/runtime and a Prolog compiler. Each configuration file contains two sets of predicates: ISO Prolog standard predicates and directives not built-in in the target Prolog compiler and Logtalk-specific predicates. +Configuration files provide the glue code between the Logtalk compiler/runtime and a Prolog compiler. Each configuration file contains two sets of predicates: ISO Prolog standard predicates and directives not built-in in the target Prolog compiler and Logtalk-specific predicates.

    Logtalk already includes ready to use configuration files for most academic and commercial Prolog compilers. If a configuration file is not available for the compiler that you intend to use, then you need to build a new one, starting from the included template.config file. Start by making a copy of the template file. Carefully check (or complete if needed) each listed definition. If your Prolog compiler conforms to the ISO standard, this task should only take you a few minutes. In most cases, you can borrow code from some of the predefined configuration files. If you are unsure that your Prolog compiler provides all the ISO predicates needed by Logtalk, try to run the system by setting the unknown predicate error handler to report as an error any call to a missing predicate. Better yet, switch to a modern, ISO compliant, Prolog compiler. If you send me your configuration file, with a reference to the target Prolog compiler, maybe I can include it in the next release of Logtalk. @@ -169,7 +174,7 @@ The configuration files specifies default values for all the Logtalk compiler fl

    altdirs
    -
    Allows the use of alternative directories for storing the Prolog files and the XML documenting files resulting from entity compilation. This flag can only be set for Prolog compilers providing the necessary operating-system access predicates for implementing this feature (specifically, a built-in predicate for creating new directories). Possible option values are on and off (the usual default). The names of the alternative directories are specified using the predicate '$lgt_alt_directory'/2, which is also defined in the configuration files. Make sure the directory names are valid for your operating system before setting this flag on.
    +
    Allows the use of alternative directories for storing the Prolog files and the XML documenting files resulting from entity compilation. This flag can only be set for Prolog compilers providing the necessary operating-system access predicates for implementing this feature (specifically, a built-in predicate for creating new directories). Possible option values are on and off (the usual default). The names of the alternative directories are specified using the compiler flags tmpdir and xmldir, which are also defined in the configuration files. Make sure the directory names are valid for your operating system before setting this flag on.
    supports_break_predicate
    @@ -184,34 +189,34 @@ The configuration files specifies default values for all the Logtalk compiler fl
    Informs Logtalk if the Prolog compiler provides suitable multi-threading programming support. Possible flag values are unsupported, on, and off. The default flag vale for compatible Prolog compilers is off, i.e. multi-threading programming support is disabled by default.
    -

    Logtalk compiler and runtime

    +

    Logtalk compiler and runtime

    -The compiler sub-directory contains the Prolog source file(s) that implement the Logtalk preprocessor/compiler and the Logtalk runtime. The compiler and the runtime may be split in two (or more) separate files or combined in a single file, depending on the Logtalk release that you are installing. +The compiler sub-directory contains the Prolog source file(s) that implement the Logtalk compiler and the Logtalk runtime. The compiler and the runtime may be split in two (or more) separate files or combined in a single file, depending on the Logtalk release that you are installing.

    -

    Library

    +

    Library

    Starting from version 2.7, Logtalk contains a standard library of useful objects, categories, and protocols. Read the corresponding NOTES.txt file for details about the library contents.

    -

    Examples

    +

    Examples

    Logtalk 2.x contains new implementations of some of the examples provided with previous 1.x versions. The sources of each one of these examples can be found included in a subdirectory with the same name, inside the directory examples. The majority of these examples include a file named SCRIPT.txt that contains cases of simple utilization. Some examples may depend on other examples and library objects to work properly. Read the corresponding NOTES.txt file for details before running an example.

    -

    Logtalk source files

    +

    Logtalk source files

    -Logtalk source files are text files containing entity definitions (objects, categories, or protocols). The extension .lgt is normally used. The Logtalk preprocessor compiles these files to plain Prolog, replacing the .lgt extension with .pl (the default Prolog extension). If your Prolog compiler expects the Prolog source filenames to end with a specific, different extension, you can set it in the corresponding configuration file. +Logtalk source files are text files containing entity definitions (objects, categories, or protocols). The extension .lgt is normally used. Logtalk compiles these files to plain Prolog, replacing the .lgt extension with .pl (the default Prolog extension). If your Prolog compiler expects the Prolog source filenames to end with a specific, different extension, you can set it in the corresponding configuration file.

    Copyright © Paulo Moura — Logtalk.org
    - Last updated on: December 8, 2006 + Last updated on: April 14, 2007
    previous | glossary | next
    diff --git a/Logtalk/manuals/userman/messages.html b/Logtalk/manuals/userman/messages.html index 32c8cb078..3ce6a9885 100644 --- a/Logtalk/manuals/userman/messages.html +++ b/Logtalk/manuals/userman/messages.html @@ -19,7 +19,7 @@
    contents > user manual
    -

    Message sending

    +

    Message sending

    Messages allows us to call object predicates. Logtalk uses the same nomenclature found in other object-oriented programming languages such as Smalltalk. Therefore, the terms predicate and method are often used interchangeably when refering to predicates defined inside objects and categories. A message must always match a predicate within the scope of the sender object. @@ -28,7 +28,7 @@ Messages allows us to call object predicates. Logtalk uses the same nomenclature Note that message sending is only the same as calling an object's predicate if the object does not inherit (or import) predicate definitions from other objects (or categories). Otherwise, the predicate definition that will be executed may depend on the relationships of the object with other Logtalk entities.

    -

    Operators used in message sending

    +

    Operators used in message sending

    Logtalk uses the following three operators for message sending: @@ -37,10 +37,10 @@ Logtalk uses the following three operators for message sending: :- op(600, fx, ::). :- op(600, fx, ^^).

    -It is assumed that these operators remain active (once the Logtalk preprocessor and runtime files are loaded) until the end of the Prolog session (this is the usual behavior of most Prolog compilers). Note that these operator definitions are compatible with the pre-defined operators in the Prolog ISO standard. +It is assumed that these operators remain active (once the Logtalk compiler and runtime files are loaded) until the end of the Prolog session (this is the usual behavior of most Prolog compilers). Note that these operator definitions are compatible with the pre-defined operators in the Prolog ISO standard.

    -

    Sending a message to an object

    +

    Sending a message to an object

    Sending a message to an object is accomplished by using the ::/2 infix operator: @@ -50,7 +50,7 @@ Sending a message to an object is accomplished by using the +

    Broadcasting

    In the Logtalk context, broadcasting is interpreted as the sending of the same message to a group of objects or the sending of several messages to the same object. Both needs can be achieved by using the message sending method described above. However, for convenience, Logtalk implements an extended syntax for message sending that makes programming easier in these situations. @@ -106,7 +106,7 @@ or: The message must match a public or protected predicate declared for the receiving object, a private predicate within the scope of the sender, or a Logtalk/Prolog built-in predicate otherwise an error will be thrown (see the Reference Manual for details). If the message is sent from inside a category or if we are using private inheritance, then the message may also match a private predicate.

    -

    Calling an overridden predicate definition

    +

    Calling an overridden predicate definition

    When redefining a predicate, sometimes we need to call the inherited definition in the new code. This functionality, introduced by the Smalltalk language through the super primitive, is available in Logtalk through the ^^/1 prefix operator: @@ -120,10 +120,10 @@ Most of the time we will use this operator by instantiating the pattern: ^^Predicate, % call inherited definition ... . % do something more -

    Message sending and event generation

    +

    Message sending and event generation

    -Every message sent using ::/2 operator generates two events, one before and one after the message execution. Messages that are sent using the ::/1 (message to self) operator or the ^^/1 super mechanism described above do not generate any events. The rational behind this distinction is that messages to self and super calls are only used internally in the definition of methods or to execute additional messages with the same target object (represented by self). In other words, events are only generated when using an object's public interface; they can not be used to break object encapsulation. +Every message sent using ::/2 operator generates two events, one before and one after the message execution. Messages that are sent using the ::/1 (message to self) operator or the ^^/1 super mechanism described above do not generate any events. The rational behind this distinction is that messages to self and super calls are only used internally in the definition of methods or to execute additional messages with the same target object (represented by self). In other words, events are only generated when using an object's public interface; they cannot be used to break object encapsulation.

    If we need to generate events for a public message sent to self, then we just need to write something like: @@ -145,19 +145,19 @@ If we also need the sender of the message to be other than the object containing When events are not used, is possible to turn off event generation on a per object basis by using the events/1 compiler option. See the session on event-driven programming for more details.

    -

    Message sending performance

    +

    Message sending performance

    -Logtalk implements dynamic binding, coupled with a caching mechanism that avoids repeated lookups of predicate declarations and predicate definitions for the same messages. This is a solution common to other programming languages supporting dynamic binding. Message lookups are automatically cached the first time a message is sent. Cache entries are automatically removed when loading entities or using Logtalk dynamic features which invalidate the cached lookups. +Logtalk supports both static binding and dynamic binding. Static binding is used whenever messages are sent (using ::/2) to objects loaded using the reload(skip) compiler flag. When that is not the case (or when using ::/1), Logtalk uses dynamic binding coupled with a caching mechanism that avoids repeated lookups of predicate declarations and predicate definitions. This is a solution common to other programming languages supporting dynamic binding. Message lookups are automatically cached the first time a message is sent. Cache entries are automatically removed when loading entities or using Logtalk dynamic features that invalidate the cached lookups.

    -When discussing Logtalk message sending performance, two distinct cases should be considered: messages sent by the user from the top-level interpreter and messages sent from compiled objects. In addition, the message declaration and definition lookups may, or may not be already cached by the runtime engine. In what follows, we will assume that the message lookups are already cached. +Whenever static binding is used, message sending performance is the same as a predicate call in plain Prolog. When discussing Logtalk dynamic binding performance, two distinct cases should be considered: messages sent by the user from the top-level interpreter and messages sent from compiled objects. In addition, the message declaration and definition lookups may, or may not be already cached by the runtime engine. In what follows, we will assume that the message lookups are already cached.

    -

    Translating message processing to predicate calls

    +

    Translating message processing to predicate calls

    -In order to better understand the performance tradeoffs of using Logtalk when compared to plain Prolog or to Prolog module systems, is useful to translate message processing in terms of predicate calls. However, in doing this, we should keep in mind that the number of predicate calls is not necessarily proportional to the time taken to execute them. +In order to better understand the performance tradeoffs of using Logtalk dynamic binding when compared to plain Prolog or to Prolog module systems, is useful to translate message processing in terms of predicate calls. However, in doing this, we should keep in mind that the number of predicate calls is not necessarily proportional to the time taken to execute them.

    A message sent from a compiled object to another object translates to six predicate calls: @@ -187,7 +187,7 @@ When a message is sent by the user from the top-level interpreter, Logtalk needs When a message is not cached, the number of predicate calls depends on the number of steps needed for the Logtalk runtime engine to lookup the corresponding predicate scope declaration (to check if the message is valid) and then to lookup a predicate definition for answering the message.

    -

    Processing time

    +

    Processing time

    Not all predicate calls take the same time. Moreover, the time taken to process a specific predicate call depends on the Prolog compiler implementation details. As such, the only valid performance measure is the time taken for processing a message. @@ -235,7 +235,7 @@ It should be stressed that message sending is only one of the factors affecting

    Copyright © Paulo Moura — Logtalk.org
    - Last updated on: January 21, 2007 + Last updated on: April 14, 2007
    previous | glossary | next
    diff --git a/Logtalk/manuals/userman/nomenclature.html b/Logtalk/manuals/userman/nomenclature.html index 4d2fbf83a..7836342d4 100644 --- a/Logtalk/manuals/userman/nomenclature.html +++ b/Logtalk/manuals/userman/nomenclature.html @@ -19,13 +19,13 @@
    contents > user manual
    -

    Nomenclature

    +

    Nomenclature

    Depending on your Object-oriented Programming background (or lack of it), you may find Logtalk nomenclature either familiar or at odds with the terms used in other languages. In addition, being a superset of Prolog, terms such as predicate and method are often used interchangeably. Logtalk inherits most of its nomenclature from Smalltalk, arguably (and somehow sadly!) not the most popular OOP language nowadays. In this section, we try to map nomenclatures from popular OOP languages such as C++ and Java to the Logtalk nomenclature.

    -

    C++ nomenclature

    +

    C++ nomenclature

    There are several C++ glossaries available on the Internet. The list that follows relates the most commonly used C++ terms with their Logtalk equivalents. @@ -88,7 +88,7 @@ There are several C++ glossaries available on the Internet. The list that follow

    Logtalk allows any predicate defined in a class to be overridden on a descendant class. There is no virtual keyword in Logtalk.
    -

    Java nomenclature

    +

    Java nomenclature

    There are several Java glossaries available on the Internet. The list that follows relates the most commonly used Java terms with their Logtalk equivalents. diff --git a/Logtalk/manuals/userman/objects.html b/Logtalk/manuals/userman/objects.html index d3931fd48..19d24dc00 100644 --- a/Logtalk/manuals/userman/objects.html +++ b/Logtalk/manuals/userman/objects.html @@ -19,7 +19,7 @@

    contents > user manual
    -

    Objects

    +

    Objects

    The main goal of Logtalk objects is the encapsulation and reuse of predicates. Instead of a single database containing all your code, Logtalk objects provide separated namespaces or databases allowing the partitioning of code in more manageable parts. Logtalk does not aim to bring some sort of new dynamic state change concept to Logic Programming or Prolog. @@ -28,22 +28,34 @@ The main goal of Logtalk objects is the encapsulation and reuse of predicates. I In Logtalk, the only pre-defined objects are the built-in objects user, debugger, and logtalk, which are described at the end of this section.

    -

    Objects, prototypes, classes, and instances

    +

    Objects, prototypes, classes, and instances

    -There are only three kinds of encapsulation entities in Logtalk: objects, protocols, and categories. Logtalk uses the term object in a broad sense. The terms prototype, parent, class, subclass, superclass, metaclass, and instance always designate an object. Different names are used to emphasize the role played by an object in a particular context. I.e. we use a term other than object when we want to make the relationship with other objects explicit. For example, an object with an instantiation relation with other object plays the role of an instance, while the instantiated object plays the role of a class; an object with a specialization relation other object plays the role of a subclass, while the specialized object plays the role of a superclass; an object with an extension relation with other object plays the role of a prototype, the same for the extended object. A stand-alone object, i.e. an object with no relations with other objects, is always interpreted as a prototype. In Logtalk, entity relations essentially define patterns of code reuse. +There are only three kinds of encapsulation entities in Logtalk: objects, protocols, and categories. Logtalk uses the term object in a broad sense. The terms prototype, parent, class, subclass, superclass, metaclass, and instance always designate an object. Different names are used to emphasize the role played by an object in a particular context. I.e. we use a term other than object when we want to make the relationship with other objects explicit. For example, an object with an instantiation relation with other object plays the role of an instance, while the instantiated object plays the role of a class; an object with a specialization relation other object plays the role of a subclass, while the specialized object plays the role of a superclass; an object with an extension relation with other object plays the role of a prototype, the same for the extended object. A stand-alone object, i.e. an object with no relations with other objects, is always interpreted as a prototype. In Logtalk, entity relations essentially define patterns of code reuse. An entity is compiled accordingly to the roles it plays.

    Logtalk allows you to work from standalone objects to any kind of hierarchy, either class-based or prototype-based. You may use single or multiple inheritance, use or forgo metaclasses, implement reflective designs, use parametric objects, and take advantage of protocols and categories (think components).

    -

    Defining a new object

    +

    Prototypes

    -We can define a new object in the same way we write Prolog code: by using a text editor. Logtalk source files may contain one or more objects, categories, or protocols. If you prefer to define each entity in its own source file, it is recommended that the file be named after the object. By default, all Logtalk source files use the extension .lgt but this is optional and can be set in the configuration files. Compiled source files (by the Logtalk preprocessor) have, by default, a .pl extension. Again, this can be set to match the needs of a particular Prolog compiler in the corresponding configuration file. For instance, we may define an object named vehicle and save it in a vehicle.lgt source file which will be compiled to a vehicle.pl Prolog file. +Prototypes are either self-defined objects or objects defined as extensions to other prototypes with whom they share common properties. Prototypes are ideal for representing one-of-a-kind objects. Prototypes usually represent concrete objects in the application domain. When linking prototypes using extension relations, Logtalk uses the term prototype hierarchies although most authors prefer to use the term hierarchy only with class generalization/specialization relations. In the context of logic programming, prototypes are often the ideal replacement for modules. +

    + +

    Classes

    + +

    +Classes are used to represent abstractions of common properties of sets of objects. Classes provide an ideal structuring solution when you want to express hierarchies of abstractions or work with many similar objects. Classes are used indirectly through instantiation. Contrary to most object-oriented programming languages, instances can be created both dynamically at runtime or defined in a source file like other objects. +

    + +

    Defining a new object

    + +

    +We can define a new object in the same way we write Prolog code: by using a text editor. Logtalk source files may contain one or more objects, categories, or protocols. If you prefer to define each entity in its own source file, it is recommended that the file be named after the object. By default, all Logtalk source files use the extension .lgt but this is optional and can be set in the configuration files. Intermediate Prolog source files (generated by the Logtalk compiler) have, by default, a .pl extension. Again, this can be set to match the needs of a particular Prolog compiler in the corresponding configuration file. For instance, we may define an object named vehicle and save it in a vehicle.lgt source file which will be compiled to a vehicle.pl Prolog file.

    -Object names can be atoms or compound terms (when defining parametric objects, see below). Objects, categories and protocols share the same name space: we can not have an object with the same name as a protocol or a category. +Object names can be atoms or compound terms (when defining parametric objects, see below). Objects, categories, and protocols share the same name space: we cannot have an object with the same name as a protocol or a category.

    Object code (directives and predicates) is textually encapsulated by using two Logtalk directives: object/1-5 and end_object/0. The most simple object will be one that is self-contained, not depending on any other Logtalk entity: @@ -130,7 +142,7 @@ A stand-alone object (i.e. an object with no extension, instantiation, Note that with these instantiation and specialization relations, object, class, and abstract_class are, at the same time, classes and instances of some class. In addition, each object inherits its own predicates and the predicates of the other two objects without any inheritance loop problems.

    -If you do not need a reflective system solution but still want to use classes and instances then you can simplify the above scheme by making an object an instance of itself or, if you prefer, by making a class its own metaclass. For example: +When a full-blown reflective system solution is not needed, the above scheme can be simplified by making an object an instance of itself, i.e. by making a class its own metaclass. For example: 

    :- object(class,
     instantiates(class)).
@@ -144,10 +156,10 @@ A third alternative is to use neither metaclasses or reflective designs but inst
     ...
 :- end_object.

    -We can use, in the same application, both prototype and class-based hierarchies (and freely exchange messages between all objects). We can not however mix the two types of hierarchies by, e.g., specializing an object that extends another object in this current Logtalk version. +We can use, in the same application, both prototype and class-based hierarchies (and freely exchange messages between all objects). We cannot however mix the two types of hierarchies by, e.g., specializing an object that extends another object in this current Logtalk version.

    -

    Parametric objects

    +

    Parametric objects

    Parametric objects have a compound term for name instead of an atom. This compound term usually contains free variables that are instantiated when sending a message to the object. The object predicates can then be coded to depend on the variables instantiation values. When an object state is set at object creation and never changed, parameters provide a better solution than using the object's database via asserts. Parametric objects can also be used to attach a set of predicates to terms that share a common functor and arity. @@ -184,7 +196,7 @@ When storing a parametric object in its own source file, the convention is to na Compound terms with the same functor and (usually) the same number of arguments as a parametric object identifier may act as proxies to a parametric object. Proxies may be stored on the database as Prolog facts and be used to represent different instantiations of a parametric object parameters.

    -

    Finding defined objects

    +

    Finding defined objects

    We can find, by backtracking, all defined objects by calling the current_object/1 built-in predicate with an uninstantiated variable: @@ -194,7 +206,7 @@ We can find, by backtracking, all defined objects by calling the +

    Creating a new object in runtime

    An object can be dynamically created at runtime by using the create_object/4 built-in predicate: @@ -225,7 +237,7 @@ is equivalent to compiling and loading the object: If we need to create a lot of (dynamic) objects at runtime, then is best to define a metaclass or a prototype with a predicate that will call this built-in predicate to make new objects. This predicate may provide automatic object name generation, name checking, and accept object initialization options.

    -

    Abolishing an existing object

    +

    Abolishing an existing object

    Dynamic objects can be abolished using the abolish_object/1 built-in predicate: @@ -235,13 +247,13 @@ Dynamic objects can be abolished using the -

    Object directives

    +

    Object directives

    Object directives are used to set initialization goals and object properties and to document an object dependencies on other Logtalk entities.

    -

    Object initialization

    +

    Object initialization

    We can define a goal to be executed as soon as an object is (compiled and) loaded to memory with the initialization/1 directive: @@ -284,7 +296,7 @@ The initialization goal can also be a message to self in order to call an Note, however, that descendant objects do not inherit initialization directives. In this context, self denotes the object that contains the directive. Also note that by initialization we do not necessarily mean setting an object dynamic state.

    -

    Dynamic objects

    +

    Dynamic objects

    Similar to Prolog predicates, an object can be either static or dynamic. An object created during the execution of a program is always dynamic. An object defined in a file can be either dynamic or static. Dynamic objects are declared by using the dynamic/0 directive in the object source code: @@ -294,7 +306,7 @@ Similar to Prolog predicates, an object can be either static or dynamic. An obje The directive must precede any predicate directives or clauses. Please be aware that using dynamic code implies a performance hit when compared to static code. We should only use dynamic objects when these need to be abolished during program execution. In addition, note that we can declare and define dynamic predicates within a static object.

    -

    Object dependencies

    +

    Object dependencies

    Besides the relations declared in the object opening directive, the predicate definitions contained in the object may imply other dependencies. These can be documented by using the calls/1 and the uses/1 directives. @@ -311,7 +323,7 @@ If a predicate definition sends a message to a specific object, this dependence These two directives may be used by the Logtalk runtime to ensure that all needed entities are loaded when running an application.

    -

    Object documentation

    +

    Object documentation

    An object can be documented with arbitrary user-defined information by using the info/1 directive: @@ -321,7 +333,7 @@ An object can be documented with arbitrary user-defined information by using the See the documenting Logtalk programs session for details.

    -

    Object relationships

    +

    Object relationships

    Logtalk provides five sets of built-in predicates that enable us to query the system about the possible relationships that an object may have with other entities. @@ -370,7 +382,7 @@ or, if we want to know the implementation scope: Note that, if we use an uninstantiated variable for the first argument, we will need to use the current_object/1 built-in predicate to ensure that the entity returned is an object and not a category.

    -

    Object properties

    +

    Object properties

    We can find the properties of defined objects by calling the built-in predicate object_property/2: @@ -380,34 +392,34 @@ We can find the properties of defined objects by calling the built-in predicate An object may have the property static, dynamic, or built_in. Dynamic objects can be abolished in runtime by calling the abolish_object/1 built-in predicate. An object may also have the properties synchronized and threaded, which are related to multi-threading programming.

    -

    Built-in objects

    +

    Built-in objects

    Logtalk defines some built-in objects that are always available for any application.

    -

    The built-in pseudo-object user

    +

    The built-in pseudo-object user

    Logtalk defines a built-in, pseudo-object named user that contains all user predicate definitions not encapsulated in a Logtalk entity. These predicates are assumed to be implicitly declared public.

    -

    The built-in object debugger

    +

    The built-in object debugger

    Logtalk defines a built-in object named debugger which implements the Logtalk built-in debugger (see the section on debugging Logtalk programs for details). This object is virtually compiled as a prototype. Programmers may define new prototypes extending debugger in order to implement custom debuggers.

    -

    The built-in object logtalk

    +

    The built-in object logtalk

    -Logtalk defines an empty built-in object named logtalk, which can play the role of both a class and a prototype. It may be used to define class hierarchies without forcing the use of metaclasses or reflective designs, as illustrated above. This object supports the dynamic declaration and definition of predicates (using the dynamic database methods). +Logtalk defines an empty built-in object named logtalk, which can play the role of both a class and a prototype. It may be used to define class hierarchies without forcing the use of metaclasses or reflective designs, as illustrated above. This object supports the dynamic declaration and definition of predicates (using the dynamic database built-in methods).

    Copyright © Paulo Moura — Logtalk.org
    - Last updated on: January 15, 2007 + Last updated on: April 14, 2007
    previous | glossary | next
    diff --git a/Logtalk/manuals/userman/predicates.html b/Logtalk/manuals/userman/predicates.html index 042c6c5c8..82dcb2e55 100644 --- a/Logtalk/manuals/userman/predicates.html +++ b/Logtalk/manuals/userman/predicates.html @@ -19,13 +19,13 @@
    contents > user manual
    -

    Predicates

    +

    Predicates

    Predicate directives and clauses can be encapsulated inside objects and categories. Protocols can only contain predicate directives.

    -

    Declaring predicates

    +

    Declaring predicates

    All object (or category) predicates that we want to access from other objects must be explicitly declared. A predicate declaration must contain, at least, a scope directive. Other directives may be used to document the predicate or to ensure proper compilation of the predicate definitions. @@ -34,10 +34,10 @@ All object (or category) predicates that we want to access from other objects mu Predicate directives should always precede the corresponding predicate definitions and/or calls in the source files in order to ensure proper compilation.

    -

    Scope directives

    +

    Scope directives

    -A predicate can be public, protected, or private. Public predicates can be called from any object. Protected predicates can only be called from the container object or from a container descendant. Private predicates can only be called from the container object. +A predicate can be public, protected, private, or local. Public predicates can be called from any object. Protected predicates can only be called from the container object or from a container descendant. Private predicates can only be called from the container object. Local predicates, like private predicates, can only be called from the container object (or category) but they are invisible to the reflection built-in methods (current_predicate/1 and predicate_property/2) and to the message error handling mechanisms (i.e. sending a message corresponding to a local predicate results in a predicate_declaration existence error, not in a scope error).

    The scope declarations are made using the directives public/1, protected/1, and private/1. For example: @@ -48,10 +48,10 @@ The scope declarations are made using the directives +

    Mode directive

    Many predicates cannot be called with arbitrary arguments with arbitrary instantiation status. The valid arguments and instantiation modes can be documented by using the mode/2 directive. For instance: @@ -103,7 +103,7 @@ Note that most predicates have more than one valid mode implying several mode di Some old Prolog compilers supported some sort of mode directives to improve performance. To the best of my knowledge, there is no modern Prolog compiler supporting these kind of directive. The current version of the Logtalk compiler just parses and than discards this directive (however, see the description on synchronized predicates on the multi-threading programming section). Nevertheless, the use of mode directives is a good starting point for documenting your predicates.

    -

    Meta-predicate directive

    +

    Meta-predicate directive

    Some predicates may have arguments that will be called as goals or closures that will be used for constructing a call. To ensure that these calls and closures will be executed in the correct scope (i.e. in the calling context, this, not in the predicate definition context) we need to use the meta_predicate/1 directive. For example: @@ -127,7 +127,7 @@ This is similar to the declaration of meta-predicates in the ISO standard for Pr The meta_predicate/1 directive must precede the meta-predicate definition and any local calls to the meta-predicate in order to ensure proper compilation. In addition, as each Logtalk entity is independently compiled, this directive must be included in every object or category that contains a definition for the described predicate, even if the predicate declaration is inherited from another entity, to ensure proper compilation of meta-arguments.

    -

    Discontiguous directive

    +

    Discontiguous directive

    The clause of an object (or category) predicate may not be contiguous. In that case, we must declare the predicate discontiguous by using the discontiguous/1 directive: @@ -140,7 +140,7 @@ This is a directive that we should avoid using: it makes your code harder to rea As each Logtalk entity is compiled independently from other entities, this directive must be included in every object or category that contains a definition for the described predicate (even if the predicate declaration is inherited from other entity).

    -

    Dynamic directive

    +

    Dynamic directive

    An object (or category) predicate can be static or dynamic. By default, all object predicates are static. To declare a dynamic predicate we use the dynamic/1 directive: @@ -150,7 +150,7 @@ An object (or category) predicate can be static or dynamic. By default, all obje This directive may also be used to declare dynamic grammar rule non-terminals. As each Logtalk entity is compiled independently from other entities, this directive must be included in every object or category that contains a definition for the described predicate (even if the predicate declaration is inherited from other entity). If we omit the dynamic declaration then the predicate definition will be compiled to static code. Note that any static object may declare and define dynamic predicates.

    -

    Operator directive

    +

    Operator directive

    An object (or category) predicate can be declared as an operator using the familiar op/3 directive: @@ -168,7 +168,7 @@ When the same operators are used on several entities within the same source file :- op(0, xfx, implies). % after all entities that used the operator -

    Uses directive

    +

    Uses directive

    When a predicate makes heavy use of predicates defined on other objects, its clauses can be excessively verbose due to all the necessary message sending constructs. Consider the following example: @@ -210,7 +210,7 @@ The uses/2 directive allows simpler predicate definitions as long a In the current Logtalk version, the omission of the Object:: prefix is not supported when the predicate call occurs as an argument of a user-defined meta-predicate (Logtalk specified meta-predicates and Prolog non-standard meta-predicates declared in the config files pose no problem).

    -

    Alias directive

    +

    Alias directive

    Logtalk allows the definition of an alternative name for an inherited or imported predicate (or for an inherited or imported grammar rule non-terminal) through the use of the alias/3 directive: @@ -278,7 +278,7 @@ The alias/3 directive may also be used to give access to an inherit Thus, when sending the message member/2 to my_data_structure, the predicate definition in set will be used instead of the one contained in list.

    -

    Documenting directive

    +

    Documenting directive

    A predicate can be documented with arbitrary user-defined information by using the info/2 directive: @@ -288,9 +288,9 @@ A predicate can be documented with arbitrary user-defined information by using t The second argument is a list of Key is Value terms. See the Documenting Logtalk programs session for details.

    -

    Defining predicates

    +

    Defining predicates

    -

    Object predicates

    +

    Object predicates

    We define object predicates as we have always defined Prolog predicates, the only difference be that we have four more control structures (the three message sending operators plus the external call operator) to play with. For example, if we wish to define an object containing common utility list predicates like append/2 or member/2 we could write something like: @@ -313,7 +313,7 @@ We define object predicates as we have always defined Prolog predicates, the onl Note that, abstracting from the opening and closing object directives and the scope directives, what we have written is plain Prolog. Calls in a predicate definition body default to the local predicates, unless we use the message sending operators or the external call operator. This enables easy conversion from Prolog code to Logtalk objects: we just need to add the necessary encapsulation and scope directives to the old code.

    -

    Category predicates

    +

    Category predicates

    Because a category can be imported by several different objects, dynamic private predicates must be called using the ::/1 message sending operator. This ensures that the correct predicate definition will be used. For example, if we want to define a category implementing variables using destructive assignment we could write: @@ -341,7 +341,7 @@ This way, each importing object will have its own definition for the value A category may only contain clauses for static predicates. Nevertheless, as the example above illustrates, there are no restrictions in declaring and calling dynamic predicates from inside a category.

    -

    Meta-predicates

    +

    Meta-predicates

    Meta-predicates may be defined inside objects (and categories) as any other predicate. A meta-predicate is declared using the meta_predicate/1 directive as described earlier on this section. When defining a meta-predicate, the arguments in the clause heads corresponding to the meta-arguments must be variables. All meta-arguments are called in the context of the object calling the meta-predicate (either directly or through message sending). @@ -360,7 +360,7 @@ all_true(Closure, [Arg| Args]) :- Note that the meta-predicate directive specifies that the closure will be extended with exactly one extra argument.

    -

    Definite clause grammars

    +

    Definite clause grammars

    Definite clause grammar rules provide a convenient notation to represent the rewrite rules common of most grammars in Prolog. In Logtalk, definite clause grammar rules can be encapsulated in objects and categories. Currently, the ISO/IEC WG17 group is working on a draft specification for a definite clause grammars Prolog standard. Therefore, in the mean time, Logtalk follows the common practice of Prolog compilers supporting definite clause grammars, extending it to support calling grammar rules contained in categories and objects. A common example of a definite clause grammar is the definition of a set of rules for parsing simple arithmetic expressions: @@ -466,13 +466,13 @@ A grammar rule non-terminal may be declared as dynamic or discontiguous, as any :- info(sentence//0, [ comment is 'Rewrites a sentence into a noun phrase and a verb phrase.']). -

    Built-in object predicates (methods)

    +

    Built-in object predicates (methods)

    Logtalk defines a set of built-in object predicates or methods to access message execution context, to find sets of solutions, to inspect objects and for database handling. Similar to Prolog built-in predicates, these built-in methods should not be redefined.

    -

    Execution context methods

    +

    Execution context methods

    Logtalk defines four built-in methods to access an object execution context. These methods (with the possible exception of parameter/2) are translated to a single unification performed at compile time with a clause head context argument. Therefore, they can be freely used without worrying about performance penalties. When called from inside a category, these methods refer to the execution context of the object importing the category. @@ -547,7 +547,7 @@ yes The method parameter/2 is only translated to a compile time unification when used inside objects with its first argument instantiated at compile time. When the first argument is not known at compile time, or when the method is used inside categories, its call implies a call to the built-in Prolog predicate arg/3. Nevertheless, note that calls to parameter/2 from inside categories are inherently problematic: a category may be implemented by several objects, both parametric (with different number of parameters) and non-parametric. Care must be taken to ensure that a parametric object importing such a category match the interpretation of its parameters used in the category.

    -

    Database methods

    +

    Database methods

    Logtalk provides a set of built-in methods for object database handling similar to the usual database Prolog predicates: abolish/1, asserta/1, assertz/1, clause/2, retract/1, and retractall/1. These methods always operate on the database of the object receiving the corresponding message. @@ -556,37 +556,37 @@ Logtalk provides a set of built-in methods for object database handling similar When working with dynamic grammar rule non-terminals, you may use the built-in method expand_term/2 convert a grammar rule into a clause that can than be used with the database methods.

    -

    Meta-call methods

    +

    Meta-call methods

    Logtalk supports the generalizaed call/N predicate as a built-in. This built-in predicate must be used in the implementation of meta-predicates which work with closures instead of goals.

    -

    All solutions methods

    +

    All solutions methods

    The usual all solutions meta-predicates are pre-defined methods in Logtalk: bagof/3, findall/3, and setof/3. There is also a forall/2 method that implements generate and test loops.

    -

    Reflection methods

    +

    Reflection methods

    Logtalk provides two built-in methods for inspecting object predicates: predicate_property/2, which returns predicate properties and current_predicate/1, which enables us to query about predicate definitions. See below for a more detailed description of both methods.

    -

    Definite clause grammar parsing methods

    +

    Definite clause grammar parsing methods

    Logtalk supports two definite clause grammar parsing built-in methods, phrase/2 and phrase/3, with definitions similar to the predicates with the same name found on most Prolog compilers that support definite clause grammars.

    -

    Term expansion methods

    +

    Term expansion methods

    Logtalk supports a expand_term/2 built-in method for expanding a term into another. This method is mostly used to translate grammar rules into Prolog clauses. It can be customized, e.g. for bypassing the default Logtalk grammar rule translator, by defining clause for the predicate term_expansion/2.

    -

    Predicate properties

    +

    Predicate properties

    We can find the properties of visible predicates by calling the predicate_property/2 built-in method. For example: @@ -626,7 +626,7 @@ The property synchronized is returned for predicates that are decla

    -

    Finding declared predicates

    +

    Finding declared predicates

    We can find, by backtracking, all visible user predicates by calling the current_predicate/1 built-in method. This method respects the predicate's scope declarations. For instance, the following call: @@ -643,7 +643,7 @@ will only return user predicates that are declared public. The predicate propert Usually, the non-terminal and the corresponding predicate share the same functor but users should not rely on this always being true.

    -

    Calling Prolog built-in predicates

    +

    Calling Prolog built-in predicates

    In predicate definitions, predicate calls which are not prefixed with a message sending operator (either :: or ^^), are compiled to either calls to local predicates or as calls to Logtalk/Prolog built-in predicates. A predicate call is compiled as a call to a local predicate if the object (or category) contains a scope directive, a definition for the called predicate, or a dynamic declaration for it. When the object (or category) does not contain either a definition of the called predicate or a corresponding dynamic declaration, Logtalk tests if the call corresponds to a Logtalk or Prolog built-in predicate. Calling a predicate which is neither a local predicate nor a Logtalk/Prolog built-in predicate results in a compile time warning. This means that, in the following example: @@ -656,10 +656,10 @@ In predicate definitions, predicate calls which are not prefixed with a message the call to the predicate write/1 will be compiled as a call to the corresponding Prolog built-in predicate unless the object (or category) encapsulating the above definition also contains a predicate named write/1 or a dynamic declaration for the predicate.

    -When calling non-standard Prolog built-in predicates, you may run into portability problems when trying your applications with other Prolog compilers which might not have the same set of built-in predicates. You may use the Logtalk compiler flag portability/1 to help you check for problematic calls in your code. +When calling non-standard Prolog built-in predicates, you may run into portability problems while trying your applications with different back-end Prolog compilers (non-standard predicates are often specific to a Prolog compiler). You may use the Logtalk compiler flag portability/1 to help check for problematic calls in your code.

    -

    Calling Prolog non-standard meta-predicates

    +

    Calling Prolog non-standard meta-predicates

    Compiling calls to non-standard, Prolog built-in meta-predicates can be tricky for two reasons: first, there is no standard way of checking if a built-in predicate is also a meta-predicate and finding out which are its meta-arguments; second, in some cases, the meta-arguments of a meta-predicate are not goals but closures, used for constructing goals. The way the goals are constructed is specific to the meta-predicate and cannot be reliable inferred by the Logtalk compiler. For meta-predicates whose meta-arguments are directly called as goals, the solution is to explicitly declare them in the corresponding Prolog configuration file using the predicate '$lgt_pl_meta-predicate'/1. For example: @@ -672,7 +672,7 @@ Currently, there is no clean workaround for calling non-standard, Prolog built-i

    Copyright © Paulo Moura — Logtalk.org
    - Last updated on: March 21, 2007 + Last updated on: April 14, 2007
    previous | glossary | next
    diff --git a/Logtalk/manuals/userman/programming.html b/Logtalk/manuals/userman/programming.html index 8c1820e4f..c90a7c38b 100644 --- a/Logtalk/manuals/userman/programming.html +++ b/Logtalk/manuals/userman/programming.html @@ -19,9 +19,9 @@
    contents > user manual
    -

    Programming in Logtalk

    +

    Programming in Logtalk

    -

    Writing programs

    +

    Writing programs

    For a successful programming in Logtalk, you need a good working knowledge of Prolog and an understanding of the principles of object-oriented programming. All guidelines for writing good Prolog code apply as well to Logtalk programming. To those guidelines, you should add the basics of good object-oriented design. @@ -30,16 +30,16 @@ For a successful programming in Logtalk, you need a good working knowledge of Pr One of the advantages of a system like Logtalk is that it enable us to use the currently available object-oriented methodologies, tools, and metrics [Champaux 92] in Prolog programming. That said, writing programs in Logtalk is similar to writing programs in Prolog: we define new predicates describing what is true about our domain objects, about our problem solution. We encapsulate our predicate directives and definitions inside new objects, categories and protocols that we create by hand with a text editor or by using the Logtalk built-in predicates. Some of the information collected during the analysis and design phases can be integrated in the objects, categories and protocols that we define by using the available entity and predicate documenting directives.

    -

    Source files

    +

    Source files

    -Logtalk source files may contain any number of objects, categories, protocols, and plain Prolog code. If you prefer to define each entity in its own source file, then it is recommended that the source file be named after the entity identifier. For parametric objects, the identifier arity can be appended to the identifier functor. By default, all Logtalk source files use the extension .lgt but this is optional and can be set in the configuration files. Compiled source files (by the Logtalk preprocessor) have, by default, a .pl extension. Again, this can be set to match the needs of a particular Prolog compiler in the corresponding configuration file. For example, we may define an object named vehicle and save it in a vehicle.lgt source file that will be compiled to a vehicle.pl Prolog file. If we have a sort(_) parametric object we can save it on a sort_1.lgt source file that will be compiled to a sort_1.pl Prolog file. This name scheme helps avoid file name conflicts (remember that all Logtalk entities share the same name space). +Logtalk source files may contain any number of objects, categories, protocols, and plain Prolog code. If you prefer to define each entity in its own source file, then it is recommended that the source file be named after the entity identifier. For parametric objects, the identifier arity can be appended to the identifier functor. By default, all Logtalk source files use the extension .lgt but this is optional and can be set in the configuration files. Intermediate Prolog source files (generated by the Logtalk compiler) have, by default, a .pl extension. Again, this can be set to match the needs of a particular Prolog compiler in the corresponding configuration file. For example, we may define an object named vehicle and save it in a vehicle.lgt source file that will be compiled to a vehicle.pl Prolog file. If we have a sort(_) parametric object we can save it on a sort_1.lgt source file that will be compiled to a sort_1.pl Prolog file. This name scheme helps avoid file name conflicts (remember that all Logtalk entities share the same name space).

    -Logtalk source files may contain arbitrary Prolog directives and clauses interleaved with Logtalk entity definitions. These directives and clauses will not be compiled by the Logtalk preprocessor and will be copied unchanged to the corresponding Prolog output file. This feature is included to help the integration of Logtalk with other Prolog extensions such as, for example, constraint programming extensions. +Logtalk source files may contain arbitrary Prolog directives and clauses interleaved with Logtalk entity definitions. These directives and clauses will not be compiled by Logtalk and will be copied unchanged to the corresponding Prolog output file. This feature is included to help the integration of Logtalk with Prolog extensions such as, for example, constraint programming extensions.

    -

    Loader utility files

    +

    Loader utility files

    Most examples directories contain a Logtalk utility file that can be used to load all included source files. These loader utility files are usually named loader.lgt or contain the word "loader" in their name. Loader files are compiled and loaded like any ordinary Logtalk source file. For an example loader file named loader.lgt we would type: @@ -69,7 +69,7 @@ A common mistake is to try to set compiler options using logtalk_load/2loader.lgt file itself and will not affect the compilation of files loaded through the initialization/1 directive contained on the loader file.

    -

    Libraries of source files

    +

    Libraries of source files

    Logtalk defines a library simply as a directory containing source files. Library locations can be specified by asserting clauses to the dynamic predicate logtalk_library_path/2. For example: @@ -92,13 +92,13 @@ The best way to take advantage of this feature is to load at startup a source fi Unfortunately, a few Prolog compilers do not support the <library>(<source file>) notation. In this case, you will need to set the working directory to be the one that contains the source file in order to load it. The library notation provides functionality similar to the file_search_path/2 mechanism introduced by Quintus Prolog and later adopted by some other Prolog compilers.

    -

    Portable programs

    +

    Portable programs

    Logtalk is compatible with almost all modern Prolog compilers. However, this does not necessarily imply that your Logtalk programs will have the same level of portability. If possible, you should only use in your programs Logtalk built-in predicates and ISO Prolog defined built-in predicates. If you need to use built-in predicates that may not be available in other Prolog compilers, you should try to encapsulate the non-portable code in a small number of objects and provide a portable interface for that code through the use of Logtalk protocols. An example will be code that access operating-system specific features. The Logtalk compiler can warn you of the use of non-ISO defined built-in predicates by using the portability/1 compiler flag.

    -

    Avoiding common errors

    +

    Avoiding common errors

    Try to write objects and protocol documentation before writing any other code; if you are having trouble documenting a predicate perhaps we need to go back to the design stage. @@ -116,20 +116,20 @@ Since each Logtalk entity is independently compiled, if an object inherits a dyn In general, Logtalk does not verify if a user predicate call/return arguments comply with the declared modes. On the other hand, Logtalk built-in predicates, built-in methods, and message sending control structures are carefully checked for calling mode errors.

    -Logtalk error handling strongly depends on the ISO compliance of the chosen Prolog compiler. For instance, the error terms that are generated by some Logtalk built-in predicates assume that the Prolog built-in predicates behave as defined in the ISO standard regarding error conditions. In particular, if your Prolog compiler does not support a read_term/3 built-in predicate compliant with the ISO Prolog Standard definition, then the current version of the Logtalk preprocessor may not be able to detect misspell variables in your source code. +Logtalk error handling strongly depends on the ISO compliance of the chosen Prolog compiler. For instance, the error terms that are generated by some Logtalk built-in predicates assume that the Prolog built-in predicates behave as defined in the ISO standard regarding error conditions. In particular, if your Prolog compiler does not support a read_term/3 built-in predicate compliant with the ISO Prolog Standard definition, then the current version of the Logtalk compiler may not be able to detect misspell variables in your source code.

    -

    Coding style guidlines

    +

    Coding style guidlines

    It is suggested that all code between an entity opening and closing directives be indented by one tab stop. When defining entity code, both directives and predicates, Prolog coding style guidelines may be applied. All Logtalk source files, examples, and standard library entities use four-space tabs for laying out code. Closed related entities should be defined in the same source file. Entities that might be useful in different contexts (such as library entities) are best defined in their own source files.

    -

    Logtalk scope

    +

    Logtalk scope

    -Logtalk, as an object-oriented extension to Prolog, shares with it the same preferred areas of application but also extends them with those areas where object-oriented features provide an advantage compared to plain Prolog. Among these areas we have: +Logtalk, being a superset of Prolog, shares with it the same preferred areas of application but also extends them with those areas where object-oriented features provide an advantage compared to plain Prolog. Among these areas we have:

    Object-oriented programming teaching and researching
    @@ -159,7 +159,7 @@ Logtalk, as an object-oriented extension to Prolog, shares with it the same pref
    Copyright © Paulo Moura — Logtalk.org
    - Last updated on: December 11, 2006 + Last updated on: April 14, 2007
    previous | glossary | next
    diff --git a/Logtalk/manuals/userman/protocols.html b/Logtalk/manuals/userman/protocols.html index 5539706bc..ea639af21 100644 --- a/Logtalk/manuals/userman/protocols.html +++ b/Logtalk/manuals/userman/protocols.html @@ -19,7 +19,7 @@
    contents > user manual
    -

    Protocols

    +

    Protocols

    Protocols enable the separation between interface and implementation: several objects can implement the same protocol and an object can implement several protocols. Protocols may contain only predicate declarations. In some languages the term interface is used with similar meaning. Logtalk allows predicate declarations of any scope within protocols, contrary to some languages that only allow public declarations. @@ -28,13 +28,13 @@ Protocols enable the separation between interface and implementation: several ob In Logtalk, the only pre-defined protocol is the built-in protocol monitoring, which is described at the end of this section.

    -

    Defining a new protocol

    +

    Defining a new protocol

    -We can define a new object in the same way we write Prolog code: by using a text editor. Logtalk source files may contain one or more objects, categories, or protocols. If you prefer to define each entity in its own source file, it is recommended that the file be named after the protocol. By default, all Logtalk source files use the extension .lgt but this is optional and can be set in the configuration files. Compiled source files (by the Logtalk preprocessor) have, by default, a .pl extension. Again, this can be set to match the needs of a particular Prolog compiler in the corresponding configuration file. For example, we may define a protocol named listp and save it in a listp.lgt source file that will be compiled to a listp.pl Prolog file. +We can define a new object in the same way we write Prolog code: by using a text editor. Logtalk source files may contain one or more objects, categories, or protocols. If you prefer to define each entity in its own source file, it is recommended that the file be named after the protocol. By default, all Logtalk source files use the extension .lgt but this is optional and can be set in the configuration files. Intermediate Prolog source files (generated by the Logtalk compiler) have, by default, a .pl extension. Again, this can be set to match the needs of a particular Prolog compiler in the corresponding configuration file. For example, we may define a protocol named listp and save it in a listp.lgt source file that will be compiled to a listp.pl Prolog file.

    -Protocol names must be atoms. Objects, categories and protocols share the same name space: we can not have a protocol with the same name as an object or a category. +Protocol names must be atoms. Objects, categories and protocols share the same name space: we cannot have a protocol with the same name as an object or a category.

    Protocol directives are textually encapsulated by using two Logtalk directives: protocol/1-2 and end_protocol/0. The most simple protocol will be one that is self-contained, not depending on any other Logtalk entity: @@ -50,7 +50,7 @@ If a protocol extends one or more protocols, then the opening directive will be: ... :- end_protocol. -

    Finding defined protocols

    +

    Finding defined protocols

    We can find, by backtracking, all defined protocols by using the current_protocol/1 built-in predicate with an uninstantiated variable: @@ -60,7 +60,7 @@ We can find, by backtracking, all defined protocols by using the +

    Creating a new protocol in runtime

    We can create a new (dynamic) protocol in runtime by calling the Logtalk built-in predicate create_protocol/3: @@ -88,7 +88,7 @@ is equivalent to compiling and loading the protocol: If we need to create a lot of (dynamic) protocols at runtime, then is best to define a metaclass or a prototype with a predicate that will call this built-in predicate in order to provide more sophisticated behavior.

    -

    Abolishing an existing protocol

    +

    Abolishing an existing protocol

    Dynamic protocols can be abolished using the abolish_protocol/1 built-in predicate: @@ -104,7 +104,7 @@ The argument must be an identifier of a defined dynamic protocol, otherwise an e Protocol directives are used to set initialization goals and protocol properties.

    -

    Protocol initialization

    +

    Protocol initialization

    We can define a goal to be executed as soon as a protocol is (compiled and) loaded to memory with the initialization/1 directive: @@ -114,7 +114,7 @@ We can define a goal to be executed as soon as a protocol is (compiled and) load The argument can be any valid Prolog or Logtalk goal, including a message sending call.

    -

    Dynamic protocols

    +

    Dynamic protocols

    As usually happens with Prolog code, a protocol can be either static or dynamic. A protocol created during the execution of a program is always dynamic. A protocol defined in a file can be either dynamic or static. Dynamic protocols are declared by using the dynamic/0 directive in the protocol source code: @@ -124,7 +124,7 @@ As usually happens with Prolog code, a protocol can be either static or dynamic. The directive must precede any predicate directives. Please be aware that using dynamic code implies a performance hit when compared to static code. We should only use dynamic protocols when these need to be abolished during program execution.

    -

    Protocol documentation

    +

    Protocol documentation

    A protocol can be documented with arbitrary user-defined information by using the info/1 directive: @@ -134,7 +134,7 @@ A protocol can be documented with arbitrary user-defined information by using th See the documenting Logtalk programs session for details.

    -

    Protocol relationships

    +

    Protocol relationships

    Logtalk provides two sets of built-in predicates that enable us to query the system about the possible relationships that a protocol have with other entities. @@ -159,7 +159,7 @@ or, if we want to know the implementation scope: Note that, if we use an uninstantiated variable for the first argument, we will need to use the current_object/1 or current_category/1 built-in predicates to identify the kind of entity returned.

    -

    Protocol properties

    +

    Protocol properties

    We can find the properties of defined protocols by calling the protocol_property/2 built-in predicate: @@ -169,7 +169,7 @@ We can find the properties of defined protocols by calling the abolish_protocol/1 built-in predicate.

    -

    Implementing protocols

    +

    Implementing protocols

    Any number of objects or categories can implement a protocol. The syntax is very simple: @@ -210,13 +210,13 @@ Omitting the scope keyword is equivalent to writing: The same rules applies to protocols implemented by categories.

    -

    Built-in protocols

    +

    Built-in protocols

    Logtalk defines a built-in protocol that is always available for any application.

    -

    The built-in protocol monitoring

    +

    The built-in protocol monitoring

    Logtalk defines a built-in protocol named monitoring that contains declarations for the before/3 and after/3 public event handler predicates. See the event-driven programming section for more details. @@ -225,7 +225,7 @@ Logtalk defines a built-in protocol named monitoring that contains

    Copyright © Paulo Moura — Logtalk.org
    - Last updated on: January 15, 2007 + Last updated on: April 14, 2007
    previous | glossary | next
    diff --git a/Logtalk/manuals/userman/running.html b/Logtalk/manuals/userman/running.html index 4bea76894..8e23c2052 100644 --- a/Logtalk/manuals/userman/running.html +++ b/Logtalk/manuals/userman/running.html @@ -19,15 +19,15 @@
    contents > user manual
    -

    Running and debugging Logtalk programs

    +

    Running and debugging Logtalk programs

    -

    Running a Logtalk session

    +

    Running a Logtalk session

    We run Logtalk inside a normal Prolog session, after loading the necessary files. Logtalk extends but does not modify your Prolog compiler. We can freely mix Prolog queries with the sending of messages and our programs can be made of both normal Prolog clauses and object definitions.

    -

    Starting Logtalk

    +

    Starting Logtalk

    Depending on your Logtalk installation, you may use a script or a shortcut to start Logtalk with your chosen Prolog compiler. On POSIX operating systems, the scripts should be available from the command-line; scripts are named upon the used Prolog compilers. On Windows, the shortcuts should be available from the Start Menu. If no scripts or shortcuts are available for your installation, operating-system, or Prolog compiler, you can always start a Logtalk session by performing the following steps: @@ -45,7 +45,7 @@ Note that the configuration files, compiler/runtime files, and library paths fil Most Prolog compilers support automatic loading of an initialization file, which can include the necessary directives to load both the Prolog configuration file and the Logtalk compiler. This feature, when available, allows automatic loading of Logtalk when you start your Prolog compiler.

    -

    Compiling and loading your programs

    +

    Compiling and loading your programs

    Your programs will be made of source files containing your objects, protocols, and categories. After changing the Prolog working directory to the one containing your files, you can compile them to disk by calling the Logtalk built-in predicate @@ -53,7 +53,7 @@ Your programs will be made of source files containing your objects, protocols, a 

    | ?- logtalk_compile([source_file1, source_file2, ...]).

    -This predicate runs the preprocessor on each argument file and, if no fatal errors are found, outputs Prolog source files that can then be consulted or compiled in the usual way by your Prolog compiler. Note that the predicate argument must be either an entity name or a list of entity names. +This predicate runs the compiler on each argument file and, if no fatal errors are found, outputs Prolog source files that can then be consulted or compiled in the usual way by your Prolog compiler. Note that the predicate argument must be either an entity name or a list of entity names.

    To compile to disk and also load into memory the source files we can use the Logtalk built-in predicate logtalk_load/1: @@ -68,8 +68,12 @@ Both predicates expect a source name name or a list of source name names as an a

    If you have more than a few source files then you may want to use a loader helper file containing the calls to the logtalk_load/1-2 predicates. Consulting or compiling the loader file will then compile and load all your Logtalk entities into memory (see the next section for details).

    +

    +With most Prolog back-end compilers, you can use the shorthand {File} for logtalk_load(File). The use this shorthand should be restricted to the Logtak/Prolog top-level; do not use it from within source files. +

    -

    Compiler flags

    + +

    Compiler flags

    The logtalk_load/1 and logtalk_compile/1 always use the current set of default compiler flags as specified in the Logtalk configuration files or changed for the current session using the built-in predicate set_logtalk_flag/2. Although the default flag values cover the usual cases, you may want to use a different set of flag values while compiling or loading some of your Logtalk source files. This can be accomplished by using the logtalk_load/2 or the logtalk_compile/2 built-in predicates. These two predicates accept a list of flag values affecting how a Logtalk source file is compiled and loaded: @@ -102,7 +106,7 @@ yes

    misspelt(Option)
    -
    Controls the misspelt predicate call warnings. A misspelt call is a call to a predicate which is not defined in the object or category containing the call, is not declared as dynamic, and is not a Logtalk/Prolog built-in predicate. Possible option values are warning (the usual default) and silent (not recommended).
    +
    Controls the misspelt predicate call warnings. A misspelt call is a call to a predicate which is not defined in the object or category containing the call, is not declared as dynamic, and is not a Logtalk/Prolog built-in predicate. Possible option values are error, warning (the usual default), and silent (not recommended).
    lgtredef(Option)
    @@ -132,6 +136,10 @@ yes
    xmldocs(Option)
    Controls the automatic generation of documenting files in XML format. Possible option values are on (the usual default) and off.
    +
    +
    xmldir(Directory)
    +
    Sets the directory to be used to store the automatically generated XML documenting files. The default value is xml_docs, a sub-directory of the source files directory. Use of this flag implies that the read-only flag altdirs be set to on (not supported in some back-end Prolog compilers).
    +
    xmlspec(Option)
    Defines the XML documenting files specification format. Possible option values are dtd (for the DTD specification; the usual default) and xsd (for the XML Schema specification). Most XSL processors support DTDs but only some of them support XML Schemas.
    @@ -175,36 +183,37 @@ yes
    hook(Object::Functor)
    Allows the definition of a compiler hook that is called for each term read form a source file. This option specifies both an object (which can be the pseudo-object user) and the functor of a public predicate with two arguments, the first one receiving the term read form the source file and the second one returning a list of terms corresponding to the expansion of the first argument.
    +
    +
    tmpdir(Directory)
    +
    Sets the directory to be used to store the temporary files generated when compiling Logtalk source files. The default value is lgt_tmp, a sub-directory of the source files directory. Use of this flag implies that the read-only flag altdirs be set to on (not supported in some back-end Prolog compilers).
    +
    -

    Reloading and smart compilation of source files

    +

    Reloading and smart compilation of source files

    -When using library entities and stable code, you can avoid reloading the corresponding source files (and, therefore, recompiling them) by setting the compiler option reload to skip. +As a general rule, reloading source files should never occur in production code and should be handled with care in development code. Reloading a Logtalk source file usually implies reloading the intermediate Prolog file that is generated by the Logtalk compiler. The problem is that there is no standard behavior for reloading Prolog files. For static predicates, almost all Prolog compilers replace the old definitions with the new ones. However, for dynamic predicates, the behavior depends on the Prolog compiler. Most compilers replace the old definitions but some of them simply append the new ones, which usually leads to trouble. See the compatibility notes for the back-end Prolog compiler you intend to use for more information. There is an additional potential problem when using multi-threading programming. Reloading a threaded object does not recreate from scratch its old message queue, which may still be in use (e.g. threads may be waiting on it).

    -If the Prolog compiler that you are using supports retrieving of file modification dates, then you can turn on smart compilation of source files to avoid recompiling files that have not been modified since last compilation. -

    -

    -Smart compilation of source files is usually off by default. You can turn it on by changing the default flag value in the configuration file, by using the corresponding compiler flag with the compiling and loading built-in predicates, or, for the remaining of a working session, by using the call: +When using library entities and stable code, you can avoid reloading the corresponding source files (and, therefore, recompiling them) by setting the compiler option reload to skip. For code under development, you can turn on smart compilation of source files to avoid recompiling files that have not been modified since last compilation (assuming that back-end Prolog compiler that you are using supports retrieving of file modification dates). Smart compilation of source files is usually off by default. You can enable it by changing the default flag value in the configuration file, by using the corresponding compiler flag with the compiling and loading built-in predicates, or, for the remaining of a working session, by using the call: 

    | ?- set_logtalk_flag(smart_compilation, on).

    -Some caveats that you should be aware. First, some warnings that might be produced when compiling a source file will not show up if the corresponding object file is up-to-date because the source file is not being (re)compiled. Second, if you are using several Prolog compilers with Logtalk, be sure to perform the first compilation of your source files with smart compilation turned off: the intermediate Prolog files generated by the Logtalk preprocessor may be not compatible across Prolog compilers or even for the same Prolog compiler across operating systems (due to the use of different end-of-line characters). +Some caveats that you should be aware. First, some warnings that might be produced when compiling a source file will not show up if the corresponding object file is up-to-date because the source file is not being (re)compiled. Second, if you are using several Prolog compilers with Logtalk, be sure to perform the first compilation of your source files with smart compilation turned off: the intermediate Prolog files generated by the Logtalk compiler may be not compatible across Prolog compilers or even for the same Prolog compiler across operating systems (due to the use of different character encodings or end-of-line characters).

    -

    Using Logtalk for batch processing

    +

    Using Logtalk for batch processing

    If you use Logtalk for batch processing, you probably want to suppress most, if not all, banners, messages, and warnings that are normally printed by the system. To suppress printing of the Logtalk startup banner and default flags, set the option startup_message in the config file that you are using to none. To suppress printing of compiling and loading messages (including compiling warnings but not compiling error messages), turn off the option report.

    -

    Debugging Logtalk programs

    +

    Debugging Logtalk programs

    Logtalk defines a built-in pseudo-object named debugger, which implements debugging features similar to those found on most Prolog compilers. However, there are some differences between the usual implementation of Prolog debuggers and the current implementation of the Logtalk debugger that you should be aware. First, unlike some Prolog debuggers, the Logtalk debugger is not implemented as a meta-interpreter. This translates to a different, although similar, set of debugging features with some limitations when compared with some Prolog debuggers. Second, debugging is only possible for objects compiled in debug mode. When compiling an object in debug mode, Logtalk keeps each clause goal in both source form and compiled form in order to allow tracing of the goal execution. Third, implementation of spy points allows the user to specify the execution context for entering the debugger. This feature is a consequence of the encapsulation of predicates inside objects.

    -

    Compiling entities in debug mode

    +

    Compiling entities in debug mode

    Compilation of source files in debug mode is controlled by the compiler flag debug. The default value for this flag, usually off, is defined in the config files. Its value may be changed at runtime by writing: @@ -223,7 +232,7 @@ The compiler flag smart_compilation is automatically turned off whe 

    | ?- debugger::debugging(Entity).
    -

    Logtalk Procedure Box model

    +

    Logtalk Procedure Box model

    Logtalk uses a Procedure Box model similar to those found on most Prolog compilers. The traditional Prolog procedure box model uses four ports (call, exit, redo, and fail) for describing control flow when a predicate clause is used during program execution: @@ -348,7 +357,7 @@ All predicate spy points removed. All context spy points removed. yes -

    Tracing program execution

    +

    Tracing program execution

    Logtalk allows tracing of execution for all objects compiled in debug mode. To start the debugger in trace mode, write: @@ -367,7 +376,7 @@ To stop tracing and turning off the debugger, write: yes -

    Debugging using spy points

    +

    Debugging using spy points

    Tracing a program execution may generate large amounts of debugging data. Debugging using spy points allows the user to concentrate its attention in specific points of its code. To start a debugging session using spy points, write: @@ -388,7 +397,7 @@ yes Note that stopping the debugger does not remove any defined spy points.

    -

    Debugging commands

    +

    Debugging commands

    The debugger pauses at leashed posts when tracing or when finding a spy point for user interaction. The commands available are as follows: @@ -412,6 +421,8 @@ The debugger pauses at leashed posts when tracing or when finding a spy point fo

    suspends execution and starts new interpreter; type end_of_file to terminate
    a — abort
    returns to top level interpreter
    +
    q — quit
    +
    quits Logtalk
    d — display
    writes current goal without using operator notation
    x — context
    @@ -430,10 +441,58 @@ The debugger pauses at leashed posts when tracing or when finding a spy point fo
    prints list of command options; ? can be used in alternative
    +

    Context-switching calls

    + +

    +Logtalk provides a control construct, <</2, which allows the execution of a query within the context of an object. Common debugging uses include checking an object local predicates (e.g. predicates representing internal dynamic state) and sending a message from within an object. +

    +

    +Consider the following toy example: +

    +
    :- object(broken).
+
+    :- public(a/1).
+    :- private([b/2, c/1]).
+    :- dynamic(c/1).
+
+    a(A) :- b(A, B), c(B).
+    b(1, 2). b(2, 4). b(3, 6).
+    c(3).    % in a real-life example, this would be a clause asserted at runtime
+
+:- end_object.
+
    +

    +Something is wrong when we try the object public predicate, a/1: +

    +
    | ?- broken::a(A).
+
+no
    +

    +For helping diagnosing the problem, instead of compiling the object in debug mode and doing a trace of the query to check the clauses for the non-public predicates, we can instead simply type: +

    +
    | ?- broken << c(C).
+
+C = 3
+yes
+
    +

    +The <</2 control construct works by switching the execution context to the object in the first argument and then compiling and executing the second argument within that context: +

    +
    | ?- broken << (self(Self), sender(Sender), this(This)).
+
+Self = broken
+Sender = broken
+This = broken
+
+yes
    +

    +As exemplified above, the <</2 control construct allows you to call an object local and private predicates. However, it is important to stress that we are not bypassing or defeating an object predicate scope directives. The calls take place within the context of the specified object, not within the context of the object making the <</2 call. Thus, the <</2 control construct implements a form of execution-context switching. +

    +
    Copyright © Paulo Moura — Logtalk.org
    - Last updated on: March 15, 2007 + Last updated on: June 8, 2007
    previous | glossary | next
    diff --git a/Logtalk/manuals/userman/threads.html b/Logtalk/manuals/userman/threads.html index 050ed6d77..3cccdc7d3 100644 --- a/Logtalk/manuals/userman/threads.html +++ b/Logtalk/manuals/userman/threads.html @@ -19,38 +19,38 @@
    contents > user manual
    -

    Multi-threading programming

    +

    Multi-threading programming

    -Logtalk provides experimental support for multi-threading programming on selected Prolog compilers. Logtalk makes use of the low-level Prolog built-in predicates that interface with POSIX threads (or a suitable emulation), providing a small set of high-level predicates and directives that allows programmers to easily take advantage of modern multi-processor and multi-core computers without caring about the details of creating, synchronizing, or communicating with threads. Logtalk multi-threading programming integrates with object-oriented programming by supporting per object threads, enabling objects to prove goals asynchronously (including call to local predicates and message sending goals). This allows an object to send both synchronous and asynchronous messages. +Logtalk provides experimental support for multi-threading programming on selected Prolog compilers. Logtalk makes use of the low-level Prolog built-in predicates that interface with POSIX threads (or a suitable emulation), providing a small set of high-level predicates and directives that allows programmers to easily take advantage of modern multi-processor and multi-core computers without worrying about the details of creating, synchronizing, or communicating with threads. Logtalk multi-threading programming integrates with object-oriented programming by enabling objects and categories to prove goals concurrently and to send both synchronous and asynchronous messages.

    -

    Enabling multi-threading support

    +

    Enabling multi-threading support

    Multi-threading support may be disabled by default. It can be enabled on the Prolog configuration files of supported compilers by setting the read-only compiler flag threads to on.

    -

    Object threads

    +

    Object message queues

    -In order to automatically create and set up an object's thread the threaded/0 object directive must be used: +In order to automatically create and set up an object message queue the threaded/0 object directive must be used: 

    :- threaded.

    -The thread is created when the object is loaded or created at runtime. The thread for the pseudo-object user is automatically created when Logtalk is loaded (provided that multi-threading programming is supported and enabled for the chosen Prolog compiler). +The message queue is created when the object is loaded or created at runtime. The message queue for the pseudo-object user is automatically created when Logtalk is loaded (provided that multi-threading programming is supported and enabled for the chosen Prolog compiler).

    -The message queue associated with an object's thread receives both goals to be proved asynchronously and the replies to the threaded calls made from within the object itself. +Object message queues are used for exchanging thread nitifications and for storing concurrent goal solutions and replies to the multi-threading calls made from within the object itself.

    -

    Multi-threading built-in predicates

    +

    Multi-threading built-in predicates

    Logtalk provides a small set of built-in predicates for multi-threading programming. For simple tasks where you simply want to prove a set of goals, each one in its own thread, Logtalk provides a threaded/1 built-in predicate. The remaining predicates allow for fine-grained control, including postponing retrieving of thread goal results at a later time, supporting non-deterministic thread goals, and make one-way asynchronous calls. Together, these predicates provide high-level support for multi-threading programming, covering most common use cases.

    -

    Proving goals concurrently using threads

    +

    Proving goals concurrently using threads

    A conjunction of goals may be proved concurrently by calling the Logtalk built-in predicate threaded/1. Each goal in the conjunction runs in its own thread. This is akin to and-parallelism. For example, assume that we want to find all the prime numbers in a given interval, [N, M]. We can split the interval in two parts and then span two threads to compute the primes numbers in each sub-interval: @@ -68,39 +68,13 @@ prime_numbers(N, M, Acc, Primes) :- ...

    -The threaded/1 call terminates when the two implicit thread calls terminate. In a computer with two or more processors (or with a processor with two or more cores) the code above can be expected to provide better computation times when compared with single-threaded code for sufficiently large intervals. +The threaded/1 call terminates when the two implicit threads terminate. In a computer with two or more processors (or with a processor with two or more cores) the code above can be expected to provide better computation times when compared with single-threaded code for sufficiently large intervals.

    -Backtracking over a threaded/1 call is equivalent to backtracking over its argument. For example: -

    -
    ?- threaded(list::(member(X, [1,2,3]), member(Y, [a,b,c]))).
-
-X = 1, Y = a ;
-X = 1, Y = b ;
-X = 1, Y = c ;
-X = 2, Y = a ;
-X = 2, Y = b ;
-X = 2, Y = c ;
-X = 3, Y = a ;
-X = 3, Y = b ;
-X = 3, Y = c
-yes
-
    -

    -The threaded/1 built-in predicate is transparent to cuts and exceptions. For example: -

    -
    ?- threaded(list::(member(X, [1,2,3]), !,  member(Y, [a,b,c]))).
-
-X = 1, Y = a ;
-X = 1, Y = b ;
-X = 1, Y = c
-yes
-
    -

    The threaded/1 built-in predicate is most useful for lengthy, independent deterministic computations where the computational costs of each goal outweigh the overhead of the implicit thread creation and management.

    -

    Proving goals asynchronously using threads

    +

    Proving goals asynchronously using threads

    A goal may be proved asynchronously using a new thread by calling the Logtalk built-in predicate threaded_call/1. The term representing the goal is copied, not shared with the thread. Therefore, any variable bindings resulting from the goal proof must be retrieved by calls to the built-in predicate threaded_exit/1. @@ -121,10 +95,10 @@ prime_numbers(N, M, Acc, Primes) :- ...

    -Note that a call to the threaded_call/1 predicate is always true (assuming a callable argument). The threaded_exit/1 calls block execution until the results of the threaded_call/1 calls are sent back to the object's thread. +Note that a call to the threaded_call/1 predicate is always true (assuming a callable argument). The threaded_exit/1 calls block execution until the results of the threaded_call/1 calls are sent back to the object message queue.

    -

    Retrieving asynchronous goal proof results

    +

    Retrieving asynchronous goal proof results

    The results of proving a goal asynchronously in a new thread may be retrieved by calling the Logtalk built-in predicate threaded_exit/1 within the same object where the call to the threaded_call/1 predicate was made. @@ -148,13 +122,13 @@ no Note that, in this case, the threaded_call/1 and the threaded_exit/1 calls are made within the pseudo-object user. The implicit thread running the lists::member/2 goal suspends itself after providing a solution, waiting for the request of an alternative solution; the thread is automatically terminated when the runtime engine detects that further backtracking to the threaded_exit/1 call is no longer possible.

    -Calls to the threaded_exit/1 predicate block the caller until the object's thread receives the reply to the asynchronous call. The predicate threaded_peek/1 may be used to check if a reply is already available without removing it from the thread queue. The threaded_peek/1 predicate call succeeds or fails immediately without blocking the caller. However, keep in mind that repeated use of this predicate is equivalent to polling a thread queue, which may severely hurt performance. +Calls to the threaded_exit/1 predicate block the caller until the object message queue receives the reply to the asynchronous call. The predicate threaded_peek/1 may be used to check if a reply is already available without removing it from the thread queue. The threaded_peek/1 predicate call succeeds or fails immediately without blocking the caller. However, keep in mind that repeated use of this predicate is equivalent to polling a message queue, which may severely hurt performance.

    -Be careful when using the threaded_exit/1 predicate inside failure-driven loops. When all the solutions have been found (and the thread generating them is therefore terminated), re-calling the predicate will block the calling thread, waiting for a reply that most likely will never arrive. +Be careful when using the threaded_exit/1 predicate inside failure-driven loops. When all the solutions have been found (and the thread generating them is therefore terminated), re-calling the predicate will generate an exception. Note that failing instead of throwing an exception is not an acceptable solution as it could be misinterpreted as a failure of the threaded_exit/1 argument.

    -

    One-way asynchronous calls

    +

    One-way asynchronous calls

    Sometimes we want to prove a goal in a new thread without caring about the results. This may be accomplished by using the built-in predicate threaded_ignore/1. For example, assume that we are developing a multi-agent application where an agent may send an "happy birthday" message to another agent. We could write: @@ -166,7 +140,7 @@ The call succeeds with no reply of the goal success, failure, or even exception

    -

    Competing goals

    +

    Competing goals

    The built-in predicate threaded_race/1 allows a disjunction of goals to be interpreted as a set of competing goals, each one running on its own thread. The first thread to terminate successfully leads to the termination of the other threads. This is useful when we have several methods to compute something, without knowing a priori which method will be faster. For example, assume that we have defined a predicate try_method/2 that calls a chosen method, returning its result. We may then write: @@ -185,10 +159,10 @@ The built-in predicate +

    Asynchronous calls and synchronized predicates

    -Proving a goal asynchronously using a new thread may lead to problems when the goal implies side-effects such as input/output operations or modifications to an object's database. For example, if a new thread is started with the same goal before the first one finished its job, we may end up with mixed output, a corrupted database, or unexpected goal failures. In order to solve this problem, predicates (and grammar rule non-terminals) with side-effects can be declared as synchronized by using the synchronized/1 predicate directive. Proving a query to a synchronized predicate (or synchronized non-terminal) is protected by a mutex, thus allowing for easy thread synchronization. For example: +Proving a goal asynchronously using a new thread may lead to problems when the goal implies side-effects such as input/output operations or modifications to an object database. For example, if a new thread is started with the same goal before the first one finished its job, we may end up with mixed output, a corrupted database, or unexpected goal failures. In order to solve this problem, predicates (and grammar rule non-terminals) with side-effects can be declared as synchronized by using the synchronized/1 predicate directive. Proving a query to a synchronized predicate (or synchronized non-terminal) is protected by a mutex, thus allowing for easy thread synchronization. For example: 

    :- synchronized(db_update/1).   % ensure thread synchronization
 
@@ -249,11 +223,11 @@ and then always use the sync_random/1 predicate instead of the pred
 The synchronization entity and predicate directives may be used when defining objects that may be reused in both single-threaded and multi-threaded Logtalk applications. The directives are simply ignored (i.e. the synchronized predicates are interpreted as normal predicates) when the objects are used in a single-threaded application.
 
    
 
-
    Synchronizing threads through notifications
    
+
    Synchronizing threads through notifications
    
 
 
    
 Declaring a set of predicates as synchronized can only ensure that they are not executed at the same time by different threads. Sometimes we need to suspend a thread not on a synchronization lock but on some condition that must hold true for a thread goal to proceed. I.e. we want a thread goal to be suspended until a condition becomes true instead of simply failing. The built-in predicate threaded_wait/1 allows us to suspend a predicate execution (running in its own thread) until a notification is received. Notifications are posted using the built-in predicate
- threaded_notify/1. A notification is a Prolog term that a programmer chooses to represent some condition becoming true. Any Prolog term can be used as a notification argument for these predicates. Related calls to the threaded_wait/1 and threaded_notify/1 must be made within the same object, this, as the object's thread message queue is used internally for posting and retrieving notifications.
+ threaded_notify/1. A notification is a Prolog term that a programmer chooses to represent some condition becoming true. Any Prolog term can be used as a notification argument for these predicates. Related calls to the threaded_wait/1 and threaded_notify/1 must be made within the same object, this, as the object message queue is used internally for posting and retrieving notifications.
 
    
 
    
 Each notification posted by a call to the threaded_notify/1 predicate is consumed by a single threaded_wait/1 predicate call. Care should be taken to avoid deadlocks when two (or more) threads both wait and post notifications to each other.
@@ -262,7 +236,7 @@ Each notification posted by a call to the threaded_notify/1 predica
 
    
 	
    
 		Copyright © Paulo Moura — Logtalk.org
    	
-		Last updated on: March 24, 2007
+		Last updated on: May 29, 2007
 	
    
 	
    
 		previous | glossary | next
    
diff --git a/Logtalk/manuals/userman/userman.header b/Logtalk/manuals/userman/userman.header
index 721df2574..c6e24b9c2 100644
--- a/Logtalk/manuals/userman/userman.header
+++ b/Logtalk/manuals/userman/userman.header
@@ -27,7 +27,7 @@
 
    
 
 
    
-	
    Logtalk 2.29.5
    
+	
    Logtalk 2.30.1
    
 	
    User Manual
    
 	
    Copyright © Paulo Moura
    
 	
    
@@ -35,7 +35,7 @@
 		
    
 		http://logtalk.org/
 	
    
-	
    Last updated on March 24, 2007
    
+	
    Last updated on June 8, 2007
    
 
    
 
 
    
diff --git a/Logtalk/manuals/userman/userman.sh b/Logtalk/manuals/userman/userman.sh
index acaac238f..476996096 100755
--- a/Logtalk/manuals/userman/userman.sh
+++ b/Logtalk/manuals/userman/userman.sh
@@ -1,13 +1,13 @@
 #!/bin/bash
 
-## =================================================================
-## Logtalk - Object oriented extension to Prolog
-## Release 2.29.5
+## ================================================================
+## Logtalk - Open source object-oriented logic programming language
+## Release 2.30.1
 ##
 ## Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-## =================================================================
+## ================================================================
 
-css2xslfo=/Applications/XML/CSSToXSLFO/css2xslfo1_4.jar
+css2xslfo=/Applications/XML/CSSToXSLFO/css2xslfo1_4_2.jar
 
 xslt_proc=xsltproc
 # xslt_proc=xalan
diff --git a/Logtalk/scripts/NOTES.txt b/Logtalk/scripts/NOTES.txt
index 3c0b1bdcd..38b5b5302 100644
--- a/Logtalk/scripts/NOTES.txt
+++ b/Logtalk/scripts/NOTES.txt
@@ -1,55 +1,54 @@
-=================================================================
-Logtalk - Object oriented extension to Prolog
-Release 2.29.5
+================================================================
+Logtalk - Open source object-oriented logic programming language
+Release 2.30.1
 
 Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-=================================================================
+================================================================
 
 
-This directory contains several shell scripts used for Logtalk packaging, 
+This directory contains some shell scripts used for Logtalk packaging, 
 installation, and integration with Prolog compilers. Those with extension 
 ".sh" are Bourne-compatible shells scripts for MacOS X, Linux, and similar 
 systems. Those with extension ".js" are JScript command-line scripts for 
 Windows; they require WSH 5.6 or later version to be installed and should 
 be run using cscript.exe from a DOS command line shell (you may download 
-WSH 5.6 from http://msdn.microsoft.com/downloads/list/webdev.asp)
+WSH 5.6 from http://msdn.microsoft.com/downloads/list/webdev.asp).
 
 build_release.sh
-	helper script for building the distribution files of a new Logtalk release
+	helper script for building most of the distribution files of a new 
+	Logtalk release
 
-lgt_install.sh
+cleandist.sh
+	script for cleaning a Logtalk distribution in preparation for packaging
+
+install.sh
 	shell script for installing Logtalk in a system-wide location for Unix 
 	and Unix-like operating systems (must be run from this directory by a 
 	user with administration privileges; accepts as an optional argument 
-	a prefix for the installation directory, default is "/usr/local" with
-	useful scripts written to "/usr/local/bin", which should be your path)
-lgt_install.js
-	Windows 2000/XP JScript script for completing the Logtalk installation by 
-	setting the LOGTALKHOME system environment variable and the LOGTALKUSER 
-	user environment variable (for the user performing the installation), by 
-	creating a new program group named "Logtalk" in the Windows Start Menu, 
-	and by adding the directories "%LOGTALKHOME%\scripts" and "%LOGTALKHOME%\xml" 
-	to the system path environment variable (must be run from this directory 
-	by a user with administration privileges after decompressing the Logtalk 
-	distribution into its final destination; you must restart your computer 
-	after running this script in order to use the items on the "Logtalk"
-	program group due to the definition of new system environment variables)
+	a prefix for the installation directory: default is "/opt/local" on 
+	Darwin and "/usr/local" on other POSIX systems, resulting in Logtalk 
+	being installed in "$prefix/share" with useful scripts written to 
+	"$prefix/bin", which should be your path)
 
-linux/build_rpm.sh
-	simple shell script for building Linux RPMs
+uninstall.sh
+	shell script for de-installing Logtalk in Unix and Unix-like operating 
+	systems (must be run from this directory by a user with administration 
+	privileges)
 
-linux/logtalk.spec
-	specification file for building Linux RPMs
-	(copy the Logtalk tarball to your RPM SOURCES directory and then 
-	run the command: rpmbuild -ba --target=noarch-*-linux logtalk.spec)
+debian
+	directory containing support files for building a Debian package
+	(work in progress; experimental)
+
+linux
+	directory containing files used when building
 
 macosx
-	directory containing files used when building MacOS X installer packages
+	directory containing files used when building MacOS X installer 
+	packages
 
-windows/logtalk.iss
-	Inno Setup GUI Windows installer script; you may compile it with Inno 
-	Setup 5.1.9 or later version to produce a Windows 2000/XP GUI installer
-	(http://www.jrsoftware.org/isinfo.php)
+windows
+	directory containing files used when building Windows 2000/XP GUI 
+	installers
 
 cplgtdirs.sh
 cplgtdirs.js
@@ -58,130 +57,6 @@ cplgtdirs.js
 	LOGTALKUSER (defaults to "~/logtalk" on POSIX operating-systems 
 	and to "My Documents\Logtalk" on Windows when the variable is not 
 	defined); must be run by the end-user in order to ensure proper 
-	permissions for the copied files
-
-cleandist.sh
-	script for cleaning a Logtalk distribution in preparation for packaging
-
-debian
-	directory containing support files for building a Debian package
-	(work in progress; not yet functional)
-
-
-The following scripts allow easy integration of Logtalk with selected Prolog 
-compilers; they must be run by a user with administration privileges:
-
-make_ciaolgt.sh
-	makes a shell script named "ciaolgt" for running Logtalk with CIAO Prolog
-	(the first run of the "ciaolgt" script must be made as root or using sudo)
-make_ciaolgt.js
-	makes a Windows shortcut named "Logtalk - CIAO" for running Logtalk with 
-	CIAO 1.10 (the first call to the shortcut must be made by a user with 
-	administrative rights)
-
-make_eclipselgt.sh
-	makes a shell script named "eclipselgt" for running Logtalk with ECLiPSe
-make_eclipselgt.js
-	makes a Windows shortcut named "Logtalk - ECLiPSe" for running Logtalk 
-	with ECLiPSe 5.11 or 5.10 (if you are using a different version, you must 
-	edit the reference to the registry key in the script; if you prefer to use
-	TkEclipse, open the "%LOGTALKHOME%\bin\logtalke_eclipse.pl" file with it)
-
-make_gplgt.sh
-	makes a shell script named "gplgt" for running Logtalk with GNU Prolog 
-	(this script is adequate for development purposes but does not provide 
-	the best possible performance for running Logtalk with this Prolog 
-	compiler; for optimal performance, see the "configs/NOTES.txt" file)
-make_gplgt.js
-	makes a Windows shortcut named "Logtalk - GNU Prolog" for running Logtalk 
-	with GNU Prolog (this script is adequate for development purposes but does 
-	not provide the best possible performance for running Logtalk with this 
-	Prolog compiler; for optimal performance, see the "configs/NOTES.txt" file)
-
-make_plclgt.sh
-	makes a shell script named "plclgt" for running Logtalk with K-Prolog	
-make_plclgt.js
-	makes a Windows shortcut named "Logtalk - K-Prolog" for running Logtalk 
-	with K-Prolog
-
-make_qplgt.sh
-	makes a shell script named "qplgt" for running Logtalk with Qu-Prolog 
-	(based on script code contributed by Peter Robinson); this script does 
-	not read at runtime the config and the libpaths files: you will need to 
-	run this script again if you modify these files
-
-make_sicstuslgt.sh
-	makes a shell script named "sicstuslgt" for running Logtalk with SICStus 
-	Prolog
-make_sicstuslgt.js
-	makes a Windows shortcut named "Logtalk - SICStus Prolog" for running 
-	Logtalk with SICStus Prolog 3.12 or 4.0 (if you are using a different 
-	version, you must edit the reference to the registry key in the script)
-
-make_swilgt.sh
-	makes a shell script named "swilgt" for running Logtalk with SWI-Prolog;
-	the script assumes that the SWI-Prolog executable is named "swipl" on 
-	MacOS X and named "pl" on Linux and other similar operating systems;
-	with multi-threading support turned on, you will get an warmless message
-	when halting the system regarding threads that wouldn't die: you can 
-	supress the message by using "% swilgt 2> /dev/null"
-make_swilgt.js
-	makes a Windows shortcut named "Logtalk - SWI-Prolog" for running 
-	Logtalk´with SWI-Prolog
-
-make_yaplgt.sh
-	makes a shell script named "yaplgt" for running Logtalk with YAP
-make_yaplgt.js
-	makes a Windows shortcut named "Logtalk - YAP" for running Logtalk 
-	with YAP (assumes that the Yap folder is installed in "C:\Program Files"; 
-	edit the path to the "yap.exe" executable in the script if necessary)
-
-make_xsblgt.sh
-	makes a shell script named "xsblgt" for running Logtalk with XSB (the 
-	first run of the "xsblgt" script must be made as root or using sudo); 
-	due to lack of XSB support for dealing with environment variables in 
-	file paths, each user must set the environment variable LOGTALKUSER to
-	"~/logtalk"
-make_xsblgt.js
-	makes a Windows shortcut named "Logtalk - XSB" for running Logtalk 
-	with XSB (the first call to the shortcut must be made by a user with 
-	administrative rights; assumes that XSB is installed in "C:\", edit 
-	the path to the "xsb.exe" executable in the script if necessary; each 
-	user will need to edit the file "libpaths/libpaths_no_env_var.pl" in 
-	order to replace all occurrences of the LOGTALKUSER environment variable 
-	with its value)
-
-makeall_lgt.sh
-	simple shell script for running all the "make_*lgt.sh" shell scripts 
-	in sequence (except the "make_qplgt.sh" as this script implies 
-	modifications to the Logtalk files which are not necessary for the 
-	other Prolog compilers); note that this script will not print any of 
-	the special instructions, remarks, or error messages that you may get 
-	when running the "make_*lgt.sh" shell scripts individually
-makeall_lgt.js
-	simple shell script for running all the "make_*lgt.js" shell scripts 
-	in sequence; note that this script will not print any of the special 
-	instructions, remarks, or error messages that you may get when running 
-	the "make_*lgt.js" shell scripts individually
-
-These scripts require the environment variable LOGTALKHOME (pointing 
-to the Logtalk installation directory) to be defined. The "*.sh" shell 
-scripts accept as an optional argument a prefix for the location of a 
-link to the scripts (default is "/usr/local", creating the links in 
-"/usr/local/bin"). The "*.js" scripts add the created shortcuts to the 
-"Logtalk" program group (which is accessed from the Windows Start Menu).
-
-Please note that the environment variables LOGTALKHOME and LOGTALKUSER 
-must be defined in order to run the "*lgt" scripts that are created by 
-the shell scripts above or the Windows shortcuts (see the "INSTALL.txt" 
-file for details on setting the variables).
-
-When Logtalk is manually installed from sources, the shell scripts 
-might not have the executable permission bit set. In that case it will 
-be necessary to first run the command "chmod a+x *.sh" on the "scripts" 
-and "xml" directories.
-
-Depending on the size and complexity of your Logtalk applications, you 
-may need to change the integration scripts in order to allocate more 
-memory to Prolog compilers. Please consult the documentation on the 
-Prolog compilers you intend to use for details.
+	permissions for the copied files; the LOGTALKHOME environment 
+	variable must be defined (pointing to the Logtalk installation 
+	directory)
diff --git a/Logtalk/scripts/build_release.sh b/Logtalk/scripts/build_release.sh
index fc7344aae..fef5f05b4 100644
--- a/Logtalk/scripts/build_release.sh
+++ b/Logtalk/scripts/build_release.sh
@@ -1,54 +1,86 @@
 #!/bin/sh
 
-## =================================================================
-## Logtalk - Object oriented extension to Prolog
-## Release 2.29.5
+## ================================================================
+## Logtalk - Open source object-oriented logic programming language
+## Release 2.30.1
 ##
 ## Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-## =================================================================
+## ================================================================
 
 dir=`PWD`
 
-cvs -d :pserver:anonymous@cvs.logtalk.org:/usr/local/cvsroot checkout logtalk
+svn export http://svn.logtalk.org/logtalk/trunk logtalk
 
 cd logtalk
 scripts/cleandist.sh
+find . -type f -print0 | xargs -0 chmod 644
+find . -type d -print0 | xargs -0 chmod 755
+chmod a+x integration/*.sh
 chmod a+x manuals/userman/*.sh
 chmod a+x manuals/refman/*.sh
 chmod a+x scripts/*.sh
 chmod a-x scripts/*.js
+chmod a+x scripts/debian/postinst
+chmod a+x scripts/debian/prerm
+chmod a+x scripts/debian/postrm
 chmod a+x scripts/linux/*.sh
 chmod a+x scripts/macosx/postflight
 chmod a+x xml/*.sh
 chmod a-x xml/*.js
 
 cd ..
-cp -R logtalk/manuals man2295
-tar -czf man2295.tgz man2295
-mv logtalk lgt2295
-tar -czf lgt2295.tgz lgt2295
+cp -R logtalk/manuals man2301
+tar -czf man2301.tgz man2301
+mv logtalk lgt2301
+tar -cjf lgt2301.tar.bz2 lgt2301
 
-md5="`md5 -q lgt2295.tgz`"
+mkdir -p debian/usr/bin
+mkdir -p debian/usr/share/doc/logtalk
+mkdir -p debian/usr/share/doc-base
+mkdir -p debian/usr/share/menu
+mkdir -p debian/DEBIAN
+cd lgt2301/scripts
+./install.sh $dir/debian/usr
+cp debian/logtalk.doc-base $dir/debian/usr/share/doc-base/logtalk-docs
+cp debian/menu $dir/debian/usr/share/menu/logtalk
+cp ../*.bib $dir/debian/usr/share/doc/logtalk
+cp ../*.txt $dir/debian/usr/share/doc/logtalk
+cp debian/copyright $dir/debian/usr/share/doc/logtalk
+cp debian/changelog $dir/debian/usr/share/doc/logtalk
+cp debian/changelog.Debian $dir/debian/usr/share/doc/logtalk
+gzip --best $dir/debian/usr/share/doc/logtalk/*.bib 
+gzip --best $dir/debian/usr/share/doc/logtalk/*.txt 
+gzip --best $dir/debian/usr/share/doc/logtalk/changelog 
+gzip --best $dir/debian/usr/share/doc/logtalk/changelog.Debian
+cp debian/control $dir/debian/DEBIAN
+cp debian/postinst $dir/debian/DEBIAN
+cp debian/prerm $dir/debian/DEBIAN
+cp debian/postrm $dir/debian/DEBIAN
+cd $dir
+dpkg-deb --build debian logtalk_2.30.1-1_all.deb
+
+md5="`md5 -q lgt2301.tar.bz2`"
 sudo mkdir -p /opt/local/var/db/dports/distfiles/logtalk
-sudo cp -f lgt2295.tgz /opt/local/var/db/dports/distfiles/logtalk/lgt2295.tgz
+sudo cp -f lgt2301.tar.bz2 /opt/local/var/db/dports/distfiles/logtalk/lgt2301.tar.bz2
 cd /opt/local/var/db/dports/sources/rsync.rsync.darwinports.org_dpupdate_dports/lang/logtalk/
 sudo cp -f Portfile Portfile.old
-sudo sed -e 's/^version.*/version 2.29.5/' -i '' Portfile
+sudo sed -e 's/^version.*/version 2.30.1/' -i '' Portfile
 sudo sed -e "s/^checksums.*/checksums md5 $md5/" -i '' Portfile
-sudo sed -e 's/^distname.*/distname lgt2295/' -i '' Portfile
+sudo sed -e 's/^distname.*/distname lgt2301/' -i '' Portfile
+sudo sed -e 's/^extract\.suffix.*/extract.suffix .tar.bz2/' -i '' Portfile
 sudo port clean --archive logtalk
-sudo port install logtalk
+sudo port destroot logtalk
 sudo port pkg logtalk
-cp -R work/logtalk-2.29.5.pkg $dir
-sudo port uninstall logtalk
+cp -R work/logtalk-2.30.1.pkg $dir
+sudo port clean logtalk
 
 cd $dir
-mkdir manpdf2295
-cd man2295/userman
+mkdir manpdf2301
+cd man2301/userman
 ./userman.sh
-mv userman.pdf ../../manpdf2295
+mv userman.pdf ../../manpdf2301
 cd ../refman
 ./refman.sh
-mv refman.pdf ../../manpdf2295
+mv refman.pdf ../../manpdf2301
 cd ../..
-tar -czf manpdf2295.tgz manpdf2295
+tar -czf manpdf2301.tgz manpdf2301
diff --git a/Logtalk/scripts/cleandist.sh b/Logtalk/scripts/cleandist.sh
index 73c80c565..9e0c05b13 100755
--- a/Logtalk/scripts/cleandist.sh
+++ b/Logtalk/scripts/cleandist.sh
@@ -1,11 +1,11 @@
 #!/bin/sh
 
-## =================================================================
-## Logtalk - Object oriented extension to Prolog
-## Release 2.29.5
+## ================================================================
+## Logtalk - Open source object-oriented logic programming language
+## Release 2.30.1
 ##
 ## Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-## =================================================================
+## ================================================================
 
 find . -name .svn -print0 | xargs -0 rm -rf
 find . -name CVS -print0 | xargs -0 rm -rf
diff --git a/Logtalk/scripts/cplgtdirs.js b/Logtalk/scripts/cplgtdirs.js
index 6bc3bd328..bc4eaba4d 100644
--- a/Logtalk/scripts/cplgtdirs.js
+++ b/Logtalk/scripts/cplgtdirs.js
@@ -1,9 +1,9 @@
-// =================================================================
-// Logtalk - Object oriented extension to Prolog
-// Release 2.29.5
+// ================================================================
+// Logtalk - Open source object-oriented logic programming language
+// Release 2.30.1
 //
 // Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-// =================================================================
+// ================================================================
 
 if (ScriptEngineMajorVersion() < 5 || ScriptEngineMajorVersion() == 5 && ScriptEngineMinorVersion() < 6) {
 	WScript.Echo('Error! WSH 5.6 or later version needed for running this script.');
@@ -80,6 +80,7 @@ FSObject.CreateFolder(logtalk_user);
 WScript.Echo("Copying Logtalk files and directories...");
 FSObject.CopyFolder(logtalk_home + "\\configs", logtalk_user + "\\configs");
 FSObject.CopyFile(logtalk_user + "\\configs\\xsb.config", logtalk_user + "\\configs\\xsb.pl");
+FSObject.CopyFile(logtalk_user + "\\configs\\xsbcvs.config", logtalk_user + "\\configs\\xsbcvs.pl");
 FSObject.CopyFolder(logtalk_home + "\\contributions", logtalk_user + "\\contributions");
 FSObject.CopyFolder(logtalk_home + "\\examples", logtalk_user + "\\examples");
 FSObject.CopyFolder(logtalk_home + "\\libpaths", logtalk_user + "\\libpaths");
@@ -121,6 +122,11 @@ link.Description = "Shortcut to Logtalk DTD";
 link.TargetPath = logtalk_home + "\\xml\\logtalk.dtd";
 link.Save();
 
+link = WshShell.CreateShortcut(logtalk_user + "\\xml\\logtalk.rng.lnk");
+link.Description = "Shortcut to Logtalk RELAX NG Schema";
+link.TargetPath = logtalk_home + "\\xml\\logtalk.rng";
+link.Save();
+
 link = WshShell.CreateShortcut(logtalk_user + "\\xml\\logtalk.xsd.lnk");
 link.Description = "Shortcut to Logtalk XML Schema";
 link.TargetPath = logtalk_home + "\\xml\\logtalk.xsd";
@@ -140,6 +146,8 @@ WScript.Echo("the configuration file for your Prolog compiler found in the direc
 WScript.Echo("");
 WScript.Echo("  " + logtalk_user + "\\configs");
 WScript.Echo("");
+WScript.Echo("See the \%LOGTALKUSER\%\\CUSTOMIZE.txt file for details.");
+WScript.Echo("");
 
 WScript.Quit(0);
 
diff --git a/Logtalk/scripts/cplgtdirs.sh b/Logtalk/scripts/cplgtdirs.sh
index 64e0b4f64..9063063c0 100755
--- a/Logtalk/scripts/cplgtdirs.sh
+++ b/Logtalk/scripts/cplgtdirs.sh
@@ -1,27 +1,43 @@
 #!/bin/sh
 
-## =================================================================
-## Logtalk - Object oriented extension to Prolog
-## Release 2.29.5
+## ================================================================
+## Logtalk - Open source object-oriented logic programming language
+## Release 2.30.1
 ##
 ## Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-## =================================================================
+## ================================================================
 
 echo
 echo "This script copies the Logtalk user-modifiable files and directories"
 echo "to the user home directory. The location can be set by the environment"
-echo "variable \$LOGTALKUSER (defaults to ~/logtalk when the variable is not"
+echo "variable \$LOGTALKUSER (defaults to \"~/logtalk\" when the variable is not"
 echo "defined)"
 echo
 
-if ! [ "$LOGTALKHOME" ]
-then
-	echo "The environment variable LOGTALKHOME must be defined first!"
+if ! [ "$LOGTALKHOME" ]; then
+	echo "The environment variable LOGTALKHOME should be defined first!"
+	echo "Trying default Logtalk installation directories..."
+	if [ -d "/usr/local/share/logtalk" ]; then
+		LOGTALKHOME=/usr/local/share/logtalk
+		echo "Using Logtalk installation at \"/usr/local/share/logtalk\""
+	elif [ -d "/usr/share/logtalk" ]; then
+		LOGTALKHOME=/usr/share/logtalk
+		echo "Using Logtalk installation at \"/usr/share/logtalk\""
+	elif [ -d "/opt/local/share/logtalk" ]; then
+		LOGTALKHOME=/opt/local/share/logtalk
+		echo "Using Logtalk installation at \"/opt/local/share/logtalk\""
+	elif [ -d "/opt/share/logtalk" ]; then
+		LOGTALKHOME=/opt/share/logtalk
+		echo "Using Logtalk installation at \"/opt/share/logtalk\""
+	else
+		echo "Unable to locate Logtalk installation directory!"
+		echo
+		exit 1
+	fi
+	echo "After the script completion, you must set the environment variable"
+	echo "LOGTALKHOME pointing to \"$LOGTALKHOME\"."
 	echo
-	exit 1
-fi
-
-if ! [ -d "$LOGTALKHOME" ]; then
+elif ! [ -d "$LOGTALKHOME" ]; then
 	echo "The environment variable LOGTALKHOME points to a non-existing directory!"
 	echo "Its current value is: $LOGTALKHOME"
 	echo "The variable must be set to your Logtalk installation directory!"
@@ -33,7 +49,7 @@ if ! [ "$LOGTALKUSER" ]
 then
 	LOGTALKUSER=$HOME/logtalk
 	echo "After the script completion, you must set the environment variable"
-	echo "LOGTALKUSER pointing to $LOGTALKUSER"
+	echo "LOGTALKUSER pointing to \"$LOGTALKUSER\"."
 	echo
 fi
 
@@ -41,7 +57,7 @@ if [ -d "$LOGTALKUSER" ]
 then
 	date=`eval date \"+%Y-%m-%d %H-%M-%S\"`
 	mv $LOGTALKUSER "$LOGTALKUSER backup $date"
-	echo "Created a backup of the existing $LOGTALKUSER directory."
+	echo "Created a backup of the existing \"$LOGTALKUSER\" directory."
 	echo
 fi
 
@@ -54,6 +70,7 @@ mkdir -p "$LOGTALKUSER"/library
 mkdir -p "$LOGTALKUSER"/xml
 cp -RL "$LOGTALKHOME"/configs "$LOGTALKUSER"/
 ln -sf xsb.config "$LOGTALKUSER"/configs/xsb.pl
+ln -sf xsbcvs.config "$LOGTALKUSER"/configs/xsbcvs.pl
 cp -RL "$LOGTALKHOME"/contributions "$LOGTALKUSER"/
 cp -RL "$LOGTALKHOME"/examples "$LOGTALKUSER"/
 cp -RL "$LOGTALKHOME"/libpaths "$LOGTALKUSER"/
@@ -78,14 +95,17 @@ ln -sf "$LOGTALKHOME"/xml/lgt2html.sh "$LOGTALKUSER"/xml/lgt2html
 ln -sf "$LOGTALKHOME"/xml/lgt2pdf.sh "$LOGTALKUSER"/xml/lgt2pdf
 ln -sf "$LOGTALKHOME"/xml/lgt2xml.sh "$LOGTALKUSER"/xml/lgt2xml
 ln -sf "$LOGTALKHOME"/xml/logtalk.dtd "$LOGTALKUSER"/xml/logtalk.dtd
+ln -sf "$LOGTALKHOME"/xml/logtalk.rng "$LOGTALKUSER"/xml/logtalk.rng
 ln -sf "$LOGTALKHOME"/xml/logtalk.xsd "$LOGTALKUSER"/xml/logtalk.xsd
 echo "Finished copying Logtalk files and directories."
 echo
-echo "You may need to edit the \$LOGTALKUSER/libpaths/libpaths.pl file to match"
-echo "your Prolog compiler and operating-system requirements or to add your own"
-echo "library paths."
+echo "You may need to edit the \"$LOGTALKUSER/libpaths/libpaths.pl\""
+echo "file to match your Prolog compiler and operating-system requirements or"
+echo "to add your own library paths."
 echo
 echo "You may want to customize the default Logtalk compiler flags by editing"
 echo "the configuration file for your Prolog compiler found in the directory"
-echo "\$LOGTALKUSER/configs."
+echo "\"$LOGTALKUSER/configs\"."
+echo "For more information on customizing Logtalk and your working environment,"
+echo "consult the \"$LOGTALKUSER/CUSTOMIZE.txt\" file."
 echo
diff --git a/Logtalk/scripts/debian/changelog b/Logtalk/scripts/debian/changelog
new file mode 100644
index 000000000..fee35ab83
--- /dev/null
+++ b/Logtalk/scripts/debian/changelog
@@ -0,0 +1,5 @@
+logtalk (2.30.1-1) unstable; urgency=low
+
+  * Initial Release.
+
+ -- Paulo Moura   Sat May 29 10:52:34 WEST 2007
diff --git a/Logtalk/scripts/debian/changelog.Debian b/Logtalk/scripts/debian/changelog.Debian
new file mode 100644
index 000000000..1a9fda3ca
--- /dev/null
+++ b/Logtalk/scripts/debian/changelog.Debian
@@ -0,0 +1,3 @@
+Logtalk Debian maintainer and upstream author are the same.
+Consult the normal changelog file for any Debian changes.
+Consult the RELEASE_NOTES.txt file for Logtalk changes.
\ No newline at end of file
diff --git a/Logtalk/scripts/debian/control b/Logtalk/scripts/debian/control
index b5fee0855..7dd0c5ae4 100644
--- a/Logtalk/scripts/debian/control
+++ b/Logtalk/scripts/debian/control
@@ -1,9 +1,14 @@
-Source: logtalk
-Version: 2.29.5
+Package: logtalk
+Version: 2.30.1
+Maintainer: Paulo Moura 
 Section: devel
 Priority: optional
-Architecture: any
+Architecture: all
 Essential: no
-Recommends: swi-prolog | gprolog
-Maintainer: Paulo Moura 
-Description: Logtalk is an open source object-oriented extension to the Prolog programming language. Integrating logic programming with object-oriented and event-driven programming, it is compatible with most Prolog compilers. It supports both prototypes and classes. In addition, it supports component-based programming through category-based composition.
+Description: Open source object-oriented logic programming language.
+ Logtalk is an open source object-oriented logic programming language 
+ that can use most Prolog implementations as a back-end compiler.
+ As a multi-paradigm language, Logtalk includes support for both 
+ prototypes and classes, protocols, component-based programming 
+ through category-based composition, event-driven programming, and 
+ multi-threading programming.
diff --git a/Logtalk/scripts/debian/copyright b/Logtalk/scripts/debian/copyright
new file mode 100644
index 000000000..2b396f8c1
--- /dev/null
+++ b/Logtalk/scripts/debian/copyright
@@ -0,0 +1,210 @@
+This package was debianized by Paulo Moura .
+
+It was downloaded from: http://logtalk.org/files/
+
+This software is copyright (c) 1998-2007 by Paulo Moura, Logtalk.org
+
+You are free to distribute this software under the terms of
+the The Artistic License 2.0:
+
+		       The Artistic License 2.0
+
+	    Copyright (c) 2000-2006, The Perl Foundation.
+
+     Everyone is permitted to copy and distribute verbatim copies
+      of this license document, but changing it is not allowed.
+
+Preamble
+
+This license establishes the terms under which a given free software
+Package may be copied, modified, distributed, and/or redistributed.
+The intent is that the Copyright Holder maintains some artistic
+control over the development of that Package while still keeping the
+Package available as open source and free software.
+
+You are always permitted to make arrangements wholly outside of this
+license directly with the Copyright Holder of a given Package.  If the
+terms of this license do not permit the full use that you propose to
+make of the Package, you should contact the Copyright Holder and seek
+a different licensing arrangement. 
+
+Definitions
+
+    "Copyright Holder" means the individual(s) or organization(s)
+    named in the copyright notice for the entire Package.
+
+    "Contributor" means any party that has contributed code or other
+    material to the Package, in accordance with the Copyright Holder's
+    procedures.
+
+    "You" and "your" means any person who would like to copy,
+    distribute, or modify the Package.
+
+    "Package" means the collection of files distributed by the
+    Copyright Holder, and derivatives of that collection and/or of
+    those files. A given Package may consist of either the Standard
+    Version, or a Modified Version.
+
+    "Distribute" means providing a copy of the Package or making it
+    accessible to anyone else, or in the case of a company or
+    organization, to others outside of your company or organization.
+
+    "Distributor Fee" means any fee that you charge for Distributing
+    this Package or providing support for this Package to another
+    party.  It does not mean licensing fees.
+
+    "Standard Version" refers to the Package if it has not been
+    modified, or has been modified only in ways explicitly requested
+    by the Copyright Holder.
+
+    "Modified Version" means the Package, if it has been changed, and
+    such changes were not explicitly requested by the Copyright
+    Holder. 
+
+    "Original License" means this Artistic License as Distributed with
+    the Standard Version of the Package, in its current version or as
+    it may be modified by The Perl Foundation in the future.
+
+    "Source" form means the source code, documentation source, and
+    configuration files for the Package.
+
+    "Compiled" form means the compiled bytecode, object code, binary,
+    or any other form resulting from mechanical transformation or
+    translation of the Source form.
+
+
+Permission for Use and Modification Without Distribution
+
+(1)  You are permitted to use the Standard Version and create and use
+Modified Versions for any purpose without restriction, provided that
+you do not Distribute the Modified Version.
+
+
+Permissions for Redistribution of the Standard Version
+
+(2)  You may Distribute verbatim copies of the Source form of the
+Standard Version of this Package in any medium without restriction,
+either gratis or for a Distributor Fee, provided that you duplicate
+all of the original copyright notices and associated disclaimers.  At
+your discretion, such verbatim copies may or may not include a
+Compiled form of the Package.
+
+(3)  You may apply any bug fixes, portability changes, and other
+modifications made available from the Copyright Holder.  The resulting
+Package will still be considered the Standard Version, and as such
+will be subject to the Original License.
+
+
+Distribution of Modified Versions of the Package as Source 
+
+(4)  You may Distribute your Modified Version as Source (either gratis
+or for a Distributor Fee, and with or without a Compiled form of the
+Modified Version) provided that you clearly document how it differs
+from the Standard Version, including, but not limited to, documenting
+any non-standard features, executables, or modules, and provided that
+you do at least ONE of the following:
+
+    (a)  make the Modified Version available to the Copyright Holder
+    of the Standard Version, under the Original License, so that the
+    Copyright Holder may include your modifications in the Standard
+    Version.
+
+    (b)  ensure that installation of your Modified Version does not
+    prevent the user installing or running the Standard Version. In
+    addition, the Modified Version must bear a name that is different
+    from the name of the Standard Version.
+
+    (c)  allow anyone who receives a copy of the Modified Version to
+    make the Source form of the Modified Version available to others
+    under
+		
+	(i)  the Original License or
+
+	(ii)  a license that permits the licensee to freely copy,
+	modify and redistribute the Modified Version using the same
+	licensing terms that apply to the copy that the licensee
+	received, and requires that the Source form of the Modified
+	Version, and of any works derived from it, be made freely
+	available in that license fees are prohibited but Distributor
+	Fees are allowed.
+
+
+Distribution of Compiled Forms of the Standard Version 
+or Modified Versions without the Source
+
+(5)  You may Distribute Compiled forms of the Standard Version without
+the Source, provided that you include complete instructions on how to
+get the Source of the Standard Version.  Such instructions must be
+valid at the time of your distribution.  If these instructions, at any
+time while you are carrying out such distribution, become invalid, you
+must provide new instructions on demand or cease further distribution.
+If you provide valid instructions or cease distribution within thirty
+days after you become aware that the instructions are invalid, then
+you do not forfeit any of your rights under this license.
+
+(6)  You may Distribute a Modified Version in Compiled form without
+the Source, provided that you comply with Section 4 with respect to
+the Source of the Modified Version.
+
+
+Aggregating or Linking the Package 
+
+(7)  You may aggregate the Package (either the Standard Version or
+Modified Version) with other packages and Distribute the resulting
+aggregation provided that you do not charge a licensing fee for the
+Package.  Distributor Fees are permitted, and licensing fees for other
+components in the aggregation are permitted. The terms of this license
+apply to the use and Distribution of the Standard or Modified Versions
+as included in the aggregation.
+
+(8) You are permitted to link Modified and Standard Versions with
+other works, to embed the Package in a larger work of your own, or to
+build stand-alone binary or bytecode versions of applications that
+include the Package, and Distribute the result without restriction,
+provided the result does not expose a direct interface to the Package.
+
+
+Items That are Not Considered Part of a Modified Version 
+
+(9) Works (including, but not limited to, modules and scripts) that
+merely extend or make use of the Package, do not, by themselves, cause
+the Package to be a Modified Version.  In addition, such works are not
+considered parts of the Package itself, and are not subject to the
+terms of this license.
+
+
+General Provisions
+
+(10)  Any use, modification, and distribution of the Standard or
+Modified Versions is governed by this Artistic License. By using,
+modifying or distributing the Package, you accept this license. Do not
+use, modify, or distribute the Package, if you do not accept this
+license.
+
+(11)  If your Modified Version has been derived from a Modified
+Version made by someone other than you, you are nevertheless required
+to ensure that your Modified Version complies with the requirements of
+this license.
+
+(12)  This license does not grant you the right to use any trademark,
+service mark, tradename, or logo of the Copyright Holder.
+
+(13)  This license includes the non-exclusive, worldwide,
+free-of-charge patent license to make, have made, use, offer to sell,
+sell, import and otherwise transfer the Package with respect to any
+patent claims licensable by the Copyright Holder that are necessarily
+infringed by the Package. If you institute patent litigation
+(including a cross-claim or counterclaim) against any party alleging
+that the Package constitutes direct or contributory patent
+infringement, then this Artistic License to you shall terminate on the
+date that such litigation is filed.
+
+(14)  Disclaimer of Warranty:
+THE PACKAGE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS "AS
+IS' AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES. THE IMPLIED
+WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
+NON-INFRINGEMENT ARE DISCLAIMED TO THE EXTENT PERMITTED BY YOUR LOCAL
+LAW. UNLESS REQUIRED BY LAW, NO COPYRIGHT HOLDER OR CONTRIBUTOR WILL
+BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
+DAMAGES ARISING IN ANY WAY OUT OF THE USE OF THE PACKAGE, EVEN IF
+ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/Logtalk/scripts/debian/docs b/Logtalk/scripts/debian/docs
new file mode 100644
index 000000000..de58f4ba8
--- /dev/null
+++ b/Logtalk/scripts/debian/docs
@@ -0,0 +1,8 @@
+BIBLIOGRAPHY.bib
+CUSTOMIZE.txt
+INSTALL.txt
+LICENSE.txt
+QUICK_START.txt
+README.txt
+RELEASE_NOTES.txt
+UPGRADING.txt
diff --git a/Logtalk/scripts/debian/logtalk.doc-base b/Logtalk/scripts/debian/logtalk.doc-base
new file mode 100644
index 000000000..efd6e0cd8
--- /dev/null
+++ b/Logtalk/scripts/debian/logtalk.doc-base
@@ -0,0 +1,15 @@
+Document: logtalk-docs
+Title: Logtalk
+Author: Paulo Moura
+Abstract: Logtalk documentation.
+ Logtalk is an open source object-oriented logic programming language,
+ which can be used with a large number of back-end Prolog compilers.
+Section: Apps/Programming
+
+Format: HTML
+Index: /usr/share/logtalk/manuals/index.html
+Files: /usr/share/logtalk/manuals/*
+
+Format: text
+Files: /usr/share/logtalk/BIBLIOGRAPHY.bib /usr/share/logtalk/CUSTOMIZE.txt /usr/share/logtalk/INSTALL.txt /usr/share/logtalk/LICENSE.txt /usr/share/logtalk/QUICK_START.txt /usr/share/logtalk/README.txt /usr/share/logtalk/RELEASE_NOTES.txt /usr/share/logtalk/UPGRADING.txt
+
diff --git a/Logtalk/scripts/debian/menu b/Logtalk/scripts/debian/menu
new file mode 100644
index 000000000..c1708c1b3
--- /dev/null
+++ b/Logtalk/scripts/debian/menu
@@ -0,0 +1 @@
+?package(logtalk): needs="text" section="Apps/Programming" title="Logtalk - GNU Prolog" command="gplgt"
diff --git a/Logtalk/scripts/debian/postinst b/Logtalk/scripts/debian/postinst
new file mode 100755
index 000000000..9455fa451
--- /dev/null
+++ b/Logtalk/scripts/debian/postinst
@@ -0,0 +1,62 @@
+#!/bin/bash
+
+## ================================================================
+## Logtalk - Open source object-oriented logic programming language
+## Release 2.30.1
+##
+## Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
+## ================================================================
+
+echo ""
+echo "Installed Logtalk on \"/usr/share\"."
+
+chown -f -R -L root:root /usr/share/logtalk
+
+echo ""
+echo "Installing and registering Logtalk online documentation..."
+
+if [ "$1" = configure ]; then
+	if which install-docs >/dev/null 2>&1; then
+		install-docs -i /usr/share/doc-base/logtalk-docs
+	fi
+fi
+
+chown -f -R -L root:root /usr/share/doc/logtalk
+
+echo "Adding menu entries for some of the Logtalk integration scripts..."
+
+if test -x /usr/bin/update-menus; then
+	update-menus
+fi
+
+echo
+echo "Links to the \"cplgtdirs\", \"lgt2pdf\", \"lgt2html\", and \"lgt2xml\" scripts have"
+echo "been created on \"/usr/bin\"."
+echo
+echo "The following integration scripts are installed for running Logtalk"
+echo "with selected back-end Prolog compilers:"
+echo
+echo "  B-Prolog:       bplgt       (first run must use sudo)"
+echo "  CIAO:           ciaolgt     (first run must use sudo)"
+echo "  CxProlog:       cxlgt"
+echo "  ECLiPSe:        eclipselgt"
+echo "  GNU Prolog:     gplgt"
+echo "  K-Prolog:       plclgt"
+echo "  SICStus Prolog: sicstuslgt"
+echo "  SWI-Prolog:     swilgt"
+echo "  XSB:            xsblgt      (first run must use sudo)"
+echo "  YAP:            yaplgt"
+echo
+echo "The Prolog integration scripts can be found on \"/usr/bin\"."
+echo "Make sure that the Prolog compilers are properly installed and available"
+echo "on your execution path."
+echo
+echo "Users should run the \"cplgtdirs\" shell script once before using the"
+echo "integration scripts."
+echo
+echo "If you get an unexpected failure when using one of the Prolog integration"
+echo "scripts, consult see the \"/usr/share/logtalk/configs/NOTES.txt\" file"
+echo "for compatibility notes."
+echo
+echo "Logtalk basic installation completed."
+echo
diff --git a/Logtalk/scripts/debian/postrm b/Logtalk/scripts/debian/postrm
new file mode 100755
index 000000000..f65058ced
--- /dev/null
+++ b/Logtalk/scripts/debian/postrm
@@ -0,0 +1,18 @@
+#!/bin/bash
+
+## ================================================================
+## Logtalk - Open source object-oriented logic programming language
+## Release 2.30.1
+##
+## Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
+## ================================================================
+
+echo "Removing menu entries for some of the Logtalk integration scripts..."
+
+if test -x /usr/bin/update-menus; then
+	update-menus
+fi
+
+echo ""
+echo "You have succesfully uninstalled Logtalk!"
+echo ""
diff --git a/Logtalk/scripts/debian/prerm b/Logtalk/scripts/debian/prerm
new file mode 100755
index 000000000..7f50cebe3
--- /dev/null
+++ b/Logtalk/scripts/debian/prerm
@@ -0,0 +1,22 @@
+#!/bin/bash
+
+## ================================================================
+## Logtalk - Open source object-oriented logic programming language
+## Release 2.30.1
+##
+## Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
+## ================================================================
+
+echo ""
+echo "Uninstalling and de-registering Logtalk online documentation..."
+
+if [ "$1" = remove -o "$1" = upgrade ]; then
+	if which install-docs >/dev/null 2>&1; then
+		install-docs -r logtalk-docs
+	fi
+fi
+
+echo ""
+echo "Removing Logtalk integration and documentation scripts..."
+
+rm -rf /usr/share/logtalk/bin
diff --git a/Logtalk/scripts/install.sh b/Logtalk/scripts/install.sh
new file mode 100755
index 000000000..cebf162f4
--- /dev/null
+++ b/Logtalk/scripts/install.sh
@@ -0,0 +1,112 @@
+#!/bin/sh
+
+## ================================================================
+## Logtalk - Open source object-oriented logic programming language
+## Release 2.30.1
+##
+## Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
+## ================================================================
+
+if [ -z "$1" ]; then
+	case $( uname -s ) in
+		Darwin	) prefix=/opt/local;;
+		*		) prefix=/usr/local;;
+	esac
+	mkdir -p $prefix
+else
+	prefix="$1"
+fi
+
+if ! [ -d "$prefix" ]; then
+	echo "Directory prefix does not exist!"
+	echo
+	exit 1
+fi
+
+echo
+echo "Installing Logtalk on $prefix/share ..."
+echo
+
+mkdir -p $prefix/share
+
+rm -rf $prefix/share/lgt2301
+rm -f $prefix/share/logtalk
+
+mkdir $prefix/share/lgt2301
+
+cd ..
+cp -R * $prefix/share/lgt2301
+
+cd $prefix/share/lgt2301
+scripts/cleandist.sh
+find . -type f -print0 | xargs -0 chmod 644
+find . -type d -print0 | xargs -0 chmod 755
+chmod a+x integration/*.sh
+chmod a+x manuals/userman/*.sh
+chmod a+x manuals/refman/*.sh
+chmod a+x scripts/*.sh
+chmod a-x scripts/*.js
+chmod a+x scripts/debian/postinst
+chmod a+x scripts/debian/prerm
+chmod a+x scripts/debian/postrm
+chmod a+x scripts/linux/*.sh
+chmod a+x scripts/macosx/postflight
+chmod a+x xml/*.sh
+chmod a-x xml/*.js
+
+cd ..
+ln -sf lgt2301 logtalk
+
+mkdir -p $prefix/bin
+cd $prefix/bin
+
+ln -sf ../share/logtalk/scripts/cplgtdirs.sh cplgtdirs
+ln -sf ../share/logtalk/xml/lgt2pdf.sh lgt2pdf
+ln -sf ../share/logtalk/xml/lgt2html.sh lgt2html
+ln -sf ../share/logtalk/xml/lgt2xml.sh lgt2xml
+
+echo "Links to the \"cplgtdirs\", \"lgt2pdf\", \"lgt2html\", and \"lgt2xml\" scripts"
+echo "have been created on \"$prefix/bin\"; you may need to add this directory"
+echo "to your execution path."
+echo
+
+ln -sf ../share/logtalk/integration/bplgt.sh bplgt
+ln -sf ../share/logtalk/integration/ciaolgt.sh ciaolgt
+ln -sf ../share/logtalk/integration/cxlgt.sh cxlgt
+ln -sf ../share/logtalk/integration/eclipselgt.sh eclipselgt
+ln -sf ../share/logtalk/integration/gplgt.sh gplgt
+ln -sf ../share/logtalk/integration/plclgt.sh plclgt
+#ln -sf ../share/logtalk/integration/qplgt.sh qplgt
+ln -sf ../share/logtalk/integration/sicstuslgt.sh sicstuslgt
+ln -sf ../share/logtalk/integration/swilgt.sh swilgt
+ln -sf ../share/logtalk/integration/xsblgt.sh xsblgt
+ln -sf ../share/logtalk/integration/yaplgt.sh yaplgt
+
+echo "The following integration scripts are installed for running Logtalk"
+echo "with selected back-end Prolog compilers:"
+echo
+echo "  B-Prolog:       bplgt       (first run must use sudo)"
+echo "  CIAO:           ciaolgt     (first run must use sudo)"
+echo "  CxProlog:       cxlgt"
+echo "  ECLiPSe:        eclipselgt"
+echo "  GNU Prolog:     gplgt"
+echo "  K-Prolog:       plclgt"
+echo "  SICStus Prolog: sicstuslgt"
+echo "  SWI-Prolog:     swilgt"
+echo "  XSB:            xsblgt      (first run must use sudo)"
+echo "  YAP:            yaplgt"
+echo
+echo "The Prolog integration scripts can be found on \"$prefix/bin\"."
+echo "Make sure that the Prolog compilers are properly installed and available"
+echo "on your execution path."
+echo
+echo "Users should ensure that the environment variable LOGTALKHOME is set to"
+echo "\"$prefix/share/logtalk\" and then run the \"cplgtdirs\" shell script once"
+echo "before running the integration scripts."
+echo
+echo "If you get an unexpected failure when using one of the Prolog integration"
+echo "scripts, consult the \"$prefix/share/logtalk/configs/NOTES.txt\" file"
+echo "for compatibility notes."
+echo
+echo "Logtalk basic installation completed."
+echo
diff --git a/Logtalk/scripts/lgt_install.js b/Logtalk/scripts/lgt_install.js
deleted file mode 100644
index 0e192db7d..000000000
--- a/Logtalk/scripts/lgt_install.js
+++ /dev/null
@@ -1,138 +0,0 @@
-// =================================================================
-// Logtalk - Object oriented extension to Prolog
-// Release 2.29.5
-//
-// Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-// =================================================================
-
-if (ScriptEngineMajorVersion() < 5 || ScriptEngineMajorVersion() == 5 && ScriptEngineMinorVersion() < 6) {
-	WScript.Echo('Error! WSH 5.6 or later version needed for running this script.');
-	WScript.Quit(1);
-}
-
-if (WScript.Arguments.Unnamed.Length > 0) {
-	usage_help();
-	WScript.Quit(0);
-}
-
-WScript.Echo('');
-WScript.Echo('Completing Logtalk installation...');
-WScript.Echo('');
-
-var WshShell = new ActiveXObject("WScript.Shell");
-var WshSystemEnv = WshShell.Environment("SYSTEM");
-var WshUserEnv = WshShell.Environment("USER");
-var FSObject = new ActiveXObject("Scripting.FileSystemObject");
-
-WshShell.CurrentDirectory = "..";
-
-WshSystemEnv.Item("LOGTALKHOME") = WshShell.CurrentDirectory;
-WScript.Echo("Defined system environment variable LOGTALKHOME pointing to:");
-WScript.Echo("");
-WScript.Echo("  " + WshShell.CurrentDirectory);
-WScript.Echo("");
-
-if (WshUserEnv.Item("LOGTALKUSER")) {
-	WScript.Echo("Reusing user environment variable LOGTALKUSER pointing to:");
-	WScript.Echo("");
-	WScript.Echo("  " + WshUserEnv.Item("LOGTALKUSER"));
-}
-else {
-	WshUserEnv.Item("LOGTALKUSER") = WshShell.SpecialFolders("MyDocuments") + "\\logtalk";
-	WScript.Echo("Defined user environment variable LOGTALKUSER pointing to:");
-	WScript.Echo("");
-	WScript.Echo("  " + WshShell.SpecialFolders("MyDocuments") + "\\logtalk");
-}
-WScript.Echo("");
-
-FSObject.CopyFile(WshShell.CurrentDirectory + "\\scripts\\*.bat", FSObject.GetSpecialFolder(0));
-FSObject.CopyFile(WshShell.CurrentDirectory + "\\xml\\*.bat", FSObject.GetSpecialFolder(0));
-WScript.Echo("Copied Logtalk documenting batch scripts to the system's Windows folder");
-WScript.Echo("");
-
-var ProgramsPath = WshShell.SpecialFolders("AllUsersPrograms");
-
-if (!FSObject.FolderExists(ProgramsPath + "\\Logtalk")) 
-	FSObject.CreateFolder(ProgramsPath + "\\Logtalk");
-
-var link = WshShell.CreateShortcut(ProgramsPath + "\\Logtalk\\Logtalk Web Site.url");
-link.TargetPath = "http://logtalk.org/";
-link.Save();
-
-link = WshShell.CreateShortcut(ProgramsPath + "\\Logtalk\\Logtalk HTML Documentation.lnk");
-link.Description = "Browse Logtalk Documentation";
-link.TargetPath = WshShell.CurrentDirectory + "\\manuals\\index.html";
-link.Save();
-
-link = WshShell.CreateShortcut(ProgramsPath + "\\Logtalk\\Logtalk ReadMe.lnk");
-link.Description = "Open Logtalk ReadMe";
-link.TargetPath = WshShell.CurrentDirectory + "\\README.txt";
-link.Save();
-
-link = WshShell.CreateShortcut(ProgramsPath + "\\Logtalk\\Logtalk Installation and Configuration.lnk");
-link.Description = "Open Logtalk Install and configuration instructions";
-link.TargetPath = WshShell.CurrentDirectory + "\\INSTALL.txt";
-link.Save();
-
-link = WshShell.CreateShortcut(ProgramsPath + "\\Logtalk\\Logtalk Customization.lnk");
-link.Description = "Open Logtalk customization instructions";
-link.TargetPath = WshShell.CurrentDirectory + "\\CUSTOMIZE.txt";
-link.Save();
-
-link = WshShell.CreateShortcut(ProgramsPath + "\\Logtalk\\Logtalk Quick Start.lnk");
-link.Description = "Open Logtalk Quick Start";
-link.TargetPath = WshShell.CurrentDirectory + "\\QUICK_START.txt";
-link.Save();
-
-link = WshShell.CreateShortcut(ProgramsPath + "\\Logtalk\\Logtalk Bibliography.lnk");
-link.Description = "Open Logtalk Bibliography";
-link.TargetPath = WshShell.CurrentDirectory + "\\BIBLIOGRAPHY.bib";
-link.Save();
-
-link = WshShell.CreateShortcut(ProgramsPath + "\\Logtalk\\Logtalk License.lnk");
-link.Description = "Open Logtalk License";
-link.TargetPath = WshShell.CurrentDirectory + "\\LICENSE.txt";
-link.Save();
-
-link = WshShell.CreateShortcut(ProgramsPath + "\\Logtalk\\Logtalk Release Notes.lnk");
-link.Description = "Open Logtalk Release Notes";
-link.TargetPath = WshShell.CurrentDirectory + "\\RELEASE_NOTES.txt";
-link.Save();
-
-link = WshShell.CreateShortcut(ProgramsPath + "\\Logtalk\\Logtalk Upgrading.lnk");
-link.Description = "Open Logtalk Upgrading instructions";
-link.TargetPath = WshShell.CurrentDirectory + "\\UPGRADING.txt";
-link.Save();
-
-WScript.Echo('Logtalk basic installation completed. You will need to RESTART in order');
-WScript.Echo('to activate the new system environment variables and use the items in');
-WScript.Echo('the new Logtalk program group. See the INSTALL and CUSTOMIZATION files');
-WScript.Echo('for details on customizing your working environment.');
-WScript.Echo('');
-WScript.Echo('After restarting your computer, you may want to run some of the Prolog');
-WScript.Echo('integration scripts, which you will find on the same directory as this');
-WScript.Echo('installer script.');
-WScript.Echo('');
-WScript.Echo('Users must run the batch script "cplgtdirs" once in order to copy the');
-WScript.Echo('Logtalk user-modifiable files to their home directories. The path to');
-WScript.Echo('the "cplgtdirs", "lgt2pdf", "lgt2html", and "lgt2xml" batch scripts');
-WScript.Echo('has been added to the system path environment variable.');
-WScript.Echo('');
-
-WScript.Quit(0);
-
-function usage_help() {
-	WScript.Echo('');
-	WScript.Echo('This script completes the installation of Logtalk by setting the LOGTALKHOME');
-	WScript.Echo('and LOGTALKUSER system environment variables and by creating a new program');
-	WScript.Echo('group named "Logtalk" in the Windows Start Menu.');
-	WScript.Echo('');
-	WScript.Echo('The script must be run from this directory, by a user with administration');
-	WScript.Echo('privileges, after decompressing the Logtalk distribution into its final');
-	WScript.Echo('destination.');
-	WScript.Echo('');
-	WScript.Echo('Usage:');
-	WScript.Echo('  ' + WScript.ScriptName + ' help');
-	WScript.Echo('  ' + WScript.ScriptName);
-	WScript.Echo('');
-}
diff --git a/Logtalk/scripts/lgt_install.sh b/Logtalk/scripts/lgt_install.sh
deleted file mode 100755
index 2bd1da518..000000000
--- a/Logtalk/scripts/lgt_install.sh
+++ /dev/null
@@ -1,66 +0,0 @@
-#!/bin/sh
-
-## =================================================================
-## Logtalk - Object oriented extension to Prolog
-## Release 2.29.5
-##
-## Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-## =================================================================
-
-if [ -z "$1" ]; then
-	prefix=/usr/local
-else
-	prefix="$1"
-fi
-
-if ! [ -d "$prefix" ]; then
-	echo "Directory prefix does not exist!"
-	echo
-	exit 1
-fi
-
-echo
-echo "Installing Logtalk on $prefix ..."
-echo
-
-rm -rf $prefix/lgt2295
-rm -f $prefix/logtalk
-
-mkdir $prefix/lgt2295
-
-cd ..
-cp -R * $prefix/lgt2295
-
-cd $prefix
-chmod -R go-w,a+r lgt2295
-chmod a+x lgt2295
-chmod a+x lgt2295/scripts/*.sh
-chmod a-x lgt2295/scripts/*.js
-chmod a+x lgt2295/scripts/linux/*.sh
-chmod a+x lgt2295/scripts/macosx/postflight
-chmod a+x lgt2295/xml/*.sh
-chmod a-x lgt2295/xml/*.js
-ln -sf lgt2295 logtalk
-
-mkdir -p bin
-cd bin
-ln -sf ../logtalk/scripts/cplgtdirs.sh cplgtdirs
-ln -sf ../logtalk/xml/lgt2pdf.sh lgt2pdf
-ln -sf ../logtalk/xml/lgt2html.sh lgt2html
-ln -sf ../logtalk/xml/lgt2xml.sh lgt2xml
-
-echo "Logtalk basic installation completed. See the INSTALL and CUSTOMIZATION"
-echo "files for details on customizing your working environment."
-echo
-echo "You may want to run some of the Prolog integration scripts, which you"
-echo "will find on the same directory as this installer script."
-echo
-echo "Users must define the environment variable LOGTALKHOME pointing to"
-echo "$prefix/logtalk and then run the shell script cplgtdirs"
-echo "in order to copy the Logtalk user-modifiable files to their home"
-echo "directories."
-echo
-echo "Links to the cplgtdirs, lgt2pdf, lgt2html, and lgt2xml scripts have"
-echo "been created on $prefix/bin; you may need to add this directory to"
-echo "your execution path."
-echo
diff --git a/Logtalk/scripts/lgt_uninstall.sh b/Logtalk/scripts/lgt_uninstall.sh
deleted file mode 100755
index f05a3e816..000000000
--- a/Logtalk/scripts/lgt_uninstall.sh
+++ /dev/null
@@ -1,53 +0,0 @@
-#!/bin/sh
-
-## =================================================================
-## Logtalk - Object oriented extension to Prolog
-## Release 2.29.5
-##
-## Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-## =================================================================
-
-echo
-echo "Uninstalling Logtalk system-level files..."
-echo
-
-if ! [ "$LOGTALKHOME" ]
-then
-	echo "The environment variable LOGTALKHOME must be defined first!"
-	echo
-	exit 1
-fi
-
-if ! [ -d "$LOGTALKHOME" ]; then
-	echo "The environment variable LOGTALKHOME points to a non-existing directory!"
-	echo "Its current value is: $LOGTALKHOME"
-	echo "The variable must be set to your Logtalk installation directory!"
-	echo
-	exit 1
-fi
-
-cd $LOGTALKHOME/..
-rm -rf lgt2295
-rm -f logtalk
-
-if [ -d bin ]; then
-	cd bin
-	rm -f bplgt
-	rm -f ciaolgt
-	rm -f cplgtdirs
-	rm -f eclipselgt
-	rm -f gplgt
-	rm -f lgt2html
-	rm -f lgt2pdf
-	rm -f lgt2xml
-	rm -f plclgt
-	rm -f qplgt
-	rm -f sicstuslgt
-	rm -f swilgt
-	rm -f xsblgt
-	rm -f yaplgt
-fi
-
-echo "Logtalk system-level uninstall completed. For uninstalling user-level"
-echo "Logtalk files simply delete the LOGTALKUSER directories."
-echo
diff --git a/Logtalk/scripts/linux/NOTES.txt b/Logtalk/scripts/linux/NOTES.txt
index 2c2f3397c..3993d7745 100644
--- a/Logtalk/scripts/linux/NOTES.txt
+++ b/Logtalk/scripts/linux/NOTES.txt
@@ -1,9 +1,9 @@
-=================================================================
-Logtalk - Object oriented extension to Prolog
-Release 2.29.5
+================================================================
+Logtalk - Open source object-oriented logic programming language
+Release 2.30.1
 
 Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-=================================================================
+================================================================
 
 
 This directory contains files used when building Linux RPM packages.
diff --git a/Logtalk/scripts/linux/build_rpm.sh b/Logtalk/scripts/linux/build_rpm.sh
index 13110dd54..da1d30ffe 100644
--- a/Logtalk/scripts/linux/build_rpm.sh
+++ b/Logtalk/scripts/linux/build_rpm.sh
@@ -1,24 +1,21 @@
 #!/bin/sh
 
-## =================================================================
-## Logtalk - Object oriented extension to Prolog
-## Release 2.29.5
+## ================================================================
+## Logtalk - Open source object-oriented logic programming language
+## Release 2.30.1
 ##
 ## Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-## =================================================================
+## ================================================================
 
 dir="$PWD"
 cd ..
 
-LOGTALKHOME=/usr/local/logtalk ./lgt_uninstall.sh
-./lgt_install.sh
+LOGTALKHOME=/usr/local/share/logtalk ./uninstall.sh
+./install.sh
 
-cd /usr/local/logtalk
-scripts/cleandist.sh
-
-cd ..
-tar -czf lgt2295.tgz lgt2295
-mv lgt2295.tgz /usr/src/redhat/SOURCES
+cd /usr/local/share
+tar -cjf lgt2301.tar.bz2 lgt2301
+mv lgt2301.tar.bz2 /usr/src/redhat/SOURCES
 
 cd "$dir"
 rpmbuild -ba --target=noarch-*-linux logtalk.spec
diff --git a/Logtalk/scripts/linux/logtalk.spec b/Logtalk/scripts/linux/logtalk.spec
index 68ebc6b6f..814ddd929 100644
--- a/Logtalk/scripts/linux/logtalk.spec
+++ b/Logtalk/scripts/linux/logtalk.spec
@@ -1,73 +1,132 @@
 Name: logtalk
-Summary: Logtalk - Open source object-oriented extension to Prolog
-Version: 2.29.5
+Summary: Logtalk - Open source object-oriented logic programming language
+Version: 2.30.1
 Release: 1
 License: Artistic License 2.0
 Group: Development/Languages
 Packager: Paulo Moura 
-Source: http://logtalk.org/files/lgt2295.tgz
+Source: http://logtalk.org/files/lgt2301.tar.bz2
 BuildArchitectures: noarch
 URL: http://logtalk.org/
 Prefix: /usr/local
 AutoReqProv: no
 %description
-Logtalk is an open source object-oriented extension to the Prolog programming language. Integrating logic programming with object-oriented and event-driven programming, it is compatible with most Prolog compilers. It supports both prototypes and classes. In addition, it supports component-based programming through category-based composition.
+Logtalk is an open source object-oriented logic programming language that can use most Prolog implementations as a back-end compiler. As a multi-paradigm language, Logtalk includes support for both prototypes and classes, protocols, component-based programming through category-based composition, event-driven programming, and multi-threading programming.
+
 %prep
-%setup -n lgt2295
+
+%setup -n lgt2301
+
 %build
+
 %install
-rm -rf /usr/local/lgt2295
-rm -f /usr/local/logtalk
-mkdir /usr/local/lgt2295
-cp -R * /usr/local/lgt2295
-cd /usr/local
-chmod -R go-w,a+r lgt2295
-chmod a+x lgt2295
-chmod a+x lgt2295/scripts/*.sh
-chmod a-x lgt2295/scripts/*.js
-chmod a+x lgt2295/scripts/linux/*.sh
-chmod a+x lgt2295/scripts/macosx/postflight
-chmod a+x lgt2295/xml/*.sh
-chmod a-x lgt2295/xml/*.js
-ln -sf lgt2295 logtalk
+mkdir -p /usr/local/share
+rm -rf /usr/local/share/lgt2301
+rm -f /usr/local/share/logtalk
+mkdir /usr/local/share/lgt2301
+cp -R * /usr/local/share/lgt2301
+cd /usr/local/share
+find lgt2301 -type f -print0 | xargs -0 chmod 644
+find lgt2301 -type d -print0 | xargs -0 chmod 755
+chmod a+x lgt2301/integration/*.sh
+chmod a+x lgt2301/scripts/*.sh
+chmod a-x lgt2301/scripts/*.js
+chmod a+x lgt2301/scripts/linux/*.sh
+chmod a+x lgt2301/scripts/macosx/postflight
+chmod a+x lgt2301/xml/*.sh
+chmod a-x lgt2301/xml/*.js
+ln -sf lgt2301 logtalk
+cd ..
+mkdir -p bin 
 cd bin
-ln -sf ../logtalk/scripts/cplgtdirs.sh cplgtdirs
-ln -sf ../logtalk/xml/lgt2pdf.sh lgt2pdf
-ln -sf ../logtalk/xml/lgt2html.sh lgt2html
-ln -sf ../logtalk/xml/lgt2xml.sh lgt2xml
+ln -sf ../share/logtalk/integration/bplgt.sh bplgt
+ln -sf ../share/logtalk/integration/ciaolgt.sh ciaolgt
+ln -sf ../share/logtalk/integration/cxlgt.sh cxlgt
+ln -sf ../share/logtalk/integration/eclipselgt.sh eclipselgt
+ln -sf ../share/logtalk/integration/gplgt.sh gplgt
+ln -sf ../share/logtalk/integration/plclgt.sh plclgt
+ln -sf ../share/logtalk/integration/sicstuslgt.sh sicstuslgt
+ln -sf ../share/logtalk/integration/swilgt.sh swilgt
+ln -sf ../share/logtalk/integration/xsblgt.sh xsblgt
+ln -sf ../share/logtalk/integration/yaplgt.sh yaplgt
+ln -sf ../share/logtalk/scripts/cplgtdirs.sh cplgtdirs
+ln -sf ../share/logtalk/xml/lgt2pdf.sh lgt2pdf
+ln -sf ../share/logtalk/xml/lgt2html.sh lgt2html
+ln -sf ../share/logtalk/xml/lgt2xml.sh lgt2xml
 %clean
 %files
-%defattr(-,root,users)
-%doc /usr/local/lgt2295/BIBLIOGRAPHY.bib
-%doc /usr/local/lgt2295/CUSTOMIZE.txt
-%doc /usr/local/lgt2295/INSTALL.txt
-%doc /usr/local/lgt2295/LICENSE.txt
-%doc /usr/local/lgt2295/QUICK_START.txt
-%doc /usr/local/lgt2295/README.txt
-%doc /usr/local/lgt2295/RELEASE_NOTES.txt
-%doc /usr/local/lgt2295/UPGRADING.txt
-/usr/local/lgt2295/compiler
-/usr/local/lgt2295/configs
-/usr/local/lgt2295/contributions
-/usr/local/lgt2295/examples
-/usr/local/lgt2295/libpaths
-/usr/local/lgt2295/library
-%docdir /usr/local/lgt2295/manuals
-/usr/local/lgt2295/manuals
-/usr/local/lgt2295/scripts
-/usr/local/lgt2295/wenv
-/usr/local/lgt2295/xml
-/usr/local/logtalk
+%defattr(-,root,root)
+%doc /usr/local/share/lgt2301/BIBLIOGRAPHY.bib
+%doc /usr/local/share/lgt2301/CUSTOMIZE.txt
+%doc /usr/local/share/lgt2301/INSTALL.txt
+%doc /usr/local/share/lgt2301/LICENSE.txt
+%doc /usr/local/share/lgt2301/QUICK_START.txt
+%doc /usr/local/share/lgt2301/README.txt
+%doc /usr/local/share/lgt2301/RELEASE_NOTES.txt
+%doc /usr/local/share/lgt2301/UPGRADING.txt
+/usr/local/share/lgt2301/compiler
+/usr/local/share/lgt2301/configs
+/usr/local/share/lgt2301/contributions
+/usr/local/share/lgt2301/examples
+/usr/local/share/lgt2301/integration
+/usr/local/share/lgt2301/libpaths
+/usr/local/share/lgt2301/library
+%docdir /usr/local/share/lgt2301/manuals
+/usr/local/share/lgt2301/manuals
+/usr/local/share/lgt2301/scripts
+/usr/local/share/lgt2301/wenv
+/usr/local/share/lgt2301/xml
+/usr/local/share/logtalk
 /usr/local/bin/cplgtdirs
 /usr/local/bin/lgt2pdf
 /usr/local/bin/lgt2html
 /usr/local/bin/lgt2xml
+/usr/local/bin/bplgt
+/usr/local/bin/ciaolgt
+/usr/local/bin/cxlgt
+/usr/local/bin/eclipselgt
+/usr/local/bin/gplgt
+/usr/local/bin/plclgt
+/usr/local/bin/sicstuslgt
+/usr/local/bin/swilgt
+/usr/local/bin/xsblgt
+/usr/local/bin/yaplgt
+
 %post
+echo
+echo "Installed Logtalk on \"$RPM_INSTALL_PREFIX/share\"."
+echo
+echo "Links to the \"cplgtdirs\", \"lgt2pdf\", \"lgt2html\", and \"lgt2xml\" scripts"
+echo "have been created on \"$RPM_INSTALL_PREFIX/bin\"; you may need to add this directory"
+echo "to your execution path."
+echo
+echo "The following integration scripts are installed for running Logtalk"
+echo "with selected back-end Prolog compilers:"
+echo
+echo "  B-Prolog:       bplgt       (first run must use sudo)"
+echo "  CIAO:           ciaolgt     (first run must use sudo)"
+echo "  CxProlog:       cxlgt"
+echo "  ECLiPSe:        eclipselgt"
+echo "  GNU Prolog:     gplgt"
+echo "  K-Prolog:       plclgt"
+echo "  SICStus Prolog: sicstuslgt"
+echo "  SWI-Prolog:     swilgt"
+echo "  XSB:            xsblgt      (first run must use sudo)"
+echo "  YAP:            yaplgt"
+echo
+echo "The Prolog integration scripts can be found on \"$RPM_INSTALL_PREFIX/bin\"."
+echo "Make sure that the Prolog compilers are properly installed and available"
+echo "on your execution path."
+echo
+echo "If you get an unexpected failure when using one of the Prolog integration"
+echo "scripts, consult the \"$RPM_INSTALL_PREFIX/share/logtalk/configs/NOTES.txt\" file"
+echo "for compatibility notes."
+echo
 mkdir -p /etc/profile.d
 echo "# Logtalk environment setup" > /etc/profile.d/logtalk.sh
 echo "" >> /etc/profile.d/logtalk.sh
 echo "# Logtalk installation directory:" >> /etc/profile.d/logtalk.sh
-echo "export LOGTALKHOME=$RPM_INSTALL_PREFIX/logtalk" >> /etc/profile.d/logtalk.sh
+echo "export LOGTALKHOME=$RPM_INSTALL_PREFIX/share/logtalk" >> /etc/profile.d/logtalk.sh
 echo "" >> /etc/profile.d/logtalk.sh
 echo "# Default location for Logtalk end-user files:" >> /etc/profile.d/logtalk.sh
 echo "export LOGTALKUSER=\$HOME/logtalk" >> /etc/profile.d/logtalk.sh
@@ -75,25 +134,28 @@ chmod a+x /etc/profile.d/logtalk.sh
 echo "# Logtalk environment setup" > /etc/profile.d/logtalk.csh
 echo "" >> /etc/profile.d/logtalk.csh
 echo "# Logtalk installation directory:" >> /etc/profile.d/logtalk.csh
-echo "setenv LOGTALKHOME $RPM_INSTALL_PREFIX/logtalk" >> /etc/profile.d/logtalk.csh
+echo "setenv LOGTALKHOME $RPM_INSTALL_PREFIX/share/logtalk" >> /etc/profile.d/logtalk.csh
 echo "" >> /etc/profile.d/logtalk.csh
 echo "# Default location for Logtalk end-user files:" >> /etc/profile.d/logtalk.csh
 echo "setenv LOGTALKUSER \$HOME/logtalk" >> /etc/profile.d/logtalk.csh
 chmod a+x /etc/profile.d/logtalk.csh
-eval export LOGTALKHOME=$RPM_INSTALL_PREFIX/logtalk; cd $LOGTALKHOME/scripts; ./makeall_lgt.sh $RPM_INSTALL_PREFIX
-echo ""
 echo "Defined the following environment variables for all users:"
-echo ""
-echo "  Logtalk installation directory: LOGTALKHOME = $RPM_INSTALL_PREFIX/logtalk"
+echo
+echo "  Logtalk installation directory: LOGTALKHOME = $RPM_INSTALL_PREFIX/share/logtalk"
 echo "  Default Logtalk user files directory: LOGTALKUSER = \$HOME/logtalk"
-echo ""
+echo
 echo "You may need to logout and login again or start a new shell in order to"
 echo "use the new environment variables."
-echo ""
-echo "You may change the default value of the LOGTALKUSER environment variable"
-echo "in your shell configuration files if you already use, or want to use, a "
-echo "different location for the Logtalk user files directory."
-echo ""
+echo
+echo "Users may change the default value of the LOGTALKUSER environment variable"
+echo "in their shell configuration files if they already use, or want to use, a "
+echo "different location for the Logtalk user files directory. This directory "
+echo "is created by running the \"cplgtdirs\" shell script, which must be run "
+echo "once by each user before using the integration scripts."
+echo
+echo "Logtalk basic installation completed."
+echo
+
 %postun
-rm -f /etc/profile.d/logtalk.sh
-rm -f /etc/profile.d/logtalk.csh
+rm -f /etc/profile.d/logtalk.sh 2> /dev/null
+rm -f /etc/profile.d/logtalk.csh 2> /dev/null
diff --git a/Logtalk/scripts/logtalk.iss b/Logtalk/scripts/logtalk.iss
deleted file mode 100755
index b17a738ab..000000000
--- a/Logtalk/scripts/logtalk.iss
+++ /dev/null
@@ -1,208 +0,0 @@
-; Script generated by the Inno Setup Script Wizard.
-
-#define MyAppName "Logtalk"
-#define MyAppVerName "Logtalk 2.28.2"
-#define MyAppPublisher "Logtalk.org"
-#define MyAppURL "http://logtalk.org"
-#define MyAppUrlName "Logtalk Web Site.url"
-#define MyAppRegURL "http://logtalk.org/regform.html"
-#define MyAppRegUrlName "Logtalk Registration.url"
-
-#define LOGTALKHOME "{reg:HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Environment,LOGTALKHOME|{pf}\Logtalk}"
-#define LOGTALKUSER "{reg:HKCU\Environment,LOGTALKUSER|{userdocs}\Logtalk}"
-
-[Setup]
-AppName={#MyAppName}
-AppVerName={#MyAppVerName}
-AppPublisher={#MyAppPublisher}
-AppPublisherURL={#MyAppURL}
-AppSupportURL={#MyAppURL}
-AppUpdatesURL={#MyAppURL}
-ChangesEnvironment=yes
-DefaultDirName={#LOGTALKHOME}
-DefaultGroupName={#MyAppName}
-DisableProgramGroupPage=yes
-LicenseFile=C:\logtalk\LICENSE.txt
-InfoBeforeFile=C:\logtalk\README.txt
-OutputBaseFilename=lgt2282
-Compression=lzma
-SolidCompression=yes
-
-VersionInfoVersion=2.28.2
-VersionInfoCopyright=© Paulo Moura, 1998-2006
-
-AllowRootDirectory=yes
-UninstallFilesDir="{userdocs}\Logtalk uninstaller"
-
-MinVersion=0,5.0
-
-[Types]
-Name: "full"; Description: "Full installation (recommended)"
-Name: "base"; Description: "Base system installation"
-Name: "user"; Description: "User data files installation (must be run by all end-users)"
-Name: "prolog"; Description: "Prolog integration (see documentation for compatibility details)"
-Name: "custom"; Description: "Custom installation"; Flags: iscustom
-
-[Components]
-Name: "base"; Description: "Base system"; Types: full base custom; Flags: disablenouninstallwarning
-Name: "user"; Description: "User data files"; Types: full user custom; Flags: checkablealone disablenouninstallwarning
-Name: "user\backup"; Description: "Backup current user data files"; Types: full user custom; Flags: disablenouninstallwarning
-Name: "prolog"; Description: "Prolog integration"; Types: full prolog custom; Flags: disablenouninstallwarning
-Name: "prolog\bp"; Description: "B-Prolog integration (version 6.9 or later)"; Types: full prolog custom; Flags: disablenouninstallwarning
-Name: "prolog\ciao"; Description: "Ciao Prolog integration (version 1.10#5 or later)"; Types: full prolog custom; Flags: disablenouninstallwarning
-Name: "prolog\eclipse"; Description: "ECLiPSe integration (version 5.10#26 or later)"; Types: full prolog custom; Flags: disablenouninstallwarning
-Name: "prolog\gprolog"; Description: "GNU Prolog integration (version 1.2.16 or later)"; Types: full prolog custom; Flags: disablenouninstallwarning
-Name: "prolog\plc"; Description: "K-Prolog integration (version 5.1.4 or later)"; Types: full prolog custom; Flags: disablenouninstallwarning
-Name: "prolog\sicstus"; Description: "SICStus Prolog integration (versions 3.12.x, 4.0)"; Types: full prolog custom; Flags: disablenouninstallwarning
-Name: "prolog\swi"; Description: "SWI-Prolog integration (version 5.6.16 or later)"; Types: full prolog custom; Flags: disablenouninstallwarning
-Name: "prolog\xsb"; Description: "XSB integration (version 3.0 or later)"; Types: full prolog custom; Flags: disablenouninstallwarning
-Name: "prolog\yap"; Description: "YAP integration (version 5.1.1 or later)"; Types: full prolog custom; Flags: disablenouninstallwarning
-
-[Tasks]
-Name: registration; Description: "&Register {#MyAppName} (opens a web page; requires an Internet connection)"; Components: base user
-Name: shortcut; Description: "&Create a desktop shortcut to the Logtalk user folder"; Components: user
-
-[Languages]
-Name: "english"; MessagesFile: "compiler:Default.isl"
-
-[Messages]
-BeveledLabel=Logtalk 2.28.2 © Paulo Moura, 1998-2006
-
-[Dirs]
-Name: {code:GetLgtUserDir}; Components: user; Flags: uninsneveruninstall
-Name: "{userdocs}\Logtalk uninstaller"
-
-[Files]
-Source: "C:\logtalk\*"; Excludes: ".*,CVS"; DestDir: "{app}"; Components: base; Flags: ignoreversion recursesubdirs createallsubdirs
-
-Source: "C:\logtalk\configs\*"; Excludes: ".*,CVS"; DestDir: "{code:GetLgtUserDir}\configs"; Components: user; Flags: ignoreversion recursesubdirs createallsubdirs uninsneveruninstall
-Source: "C:\logtalk\contributions\*"; Excludes: ".*,CVS"; DestDir: "{code:GetLgtUserDir}\contributions"; Components: user; Flags: ignoreversion recursesubdirs createallsubdirs uninsneveruninstall
-Source: "C:\logtalk\examples\*"; Excludes: ".*,CVS"; DestDir: "{code:GetLgtUserDir}\examples"; Components: user; Flags: ignoreversion recursesubdirs createallsubdirs uninsneveruninstall
-Source: "C:\logtalk\libpaths\*"; Excludes: ".*,CVS"; DestDir: "{code:GetLgtUserDir}\libpaths"; Components: user; Flags: ignoreversion recursesubdirs createallsubdirs uninsneveruninstall
-Source: "C:\logtalk\library\*"; Excludes: ".*,CVS"; DestDir: "{code:GetLgtUserDir}\library"; Components: user; Flags: ignoreversion recursesubdirs createallsubdirs uninsneveruninstall
-Source: "C:\logtalk\xml\*"; Excludes: ".*,CVS"; DestDir: "{code:GetLgtUserDir}\xml"; Components: user; Flags: ignoreversion recursesubdirs createallsubdirs uninsneveruninstall
-
-Source: "C:\logtalk\configs\xsb.config"; DestDir: "{code:GetLgtUserDir}\configs"; DestName: "xsb.pl"; Components: user; Flags: ignoreversion uninsneveruninstall
-Source: "C:\logtalk\libpaths\libpaths.pl"; DestDir: "{code:GetLgtUserDir}\libpaths"; DestName: "libpaths_no_env_var.pl"; Components: user; Flags: ignoreversion uninsneveruninstall
-
-Source: "C:\logtalk\scripts\*.bat"; DestDir: "{win}"; Components: base; Flags: ignoreversion
-Source: "C:\logtalk\xml\*.bat"; DestDir: "{win}"; Components: base; Flags: ignoreversion
-
-[INI]
-Filename: "{app}\{#MyAppUrlName}"; Section: "InternetShortcut"; Key: "URL"; String: "{#MyAppURL}"; Components: base
-Filename: "{app}\{#MyAppRegUrlName}"; Section: "InternetShortcut"; Key: "URL"; String: "{#MyAppRegURL}"; Components: base
-
-[Icons]
-Name: "{group}\{#MyAppName} Bibliography"; Filename: "{app}\BIBLIOGRAPHY.bib"; Components: base
-Name: "{group}\{#MyAppName} Documentation"; Filename: "{app}\manuals\index.html"; Components: base
-Name: "{group}\{#MyAppName} License"; Filename: "{app}\LICENSE.txt"; Components: base
-Name: "{group}\{#MyAppName} Release Notes"; Filename: "{app}\RELEASE_NOTES.txt"; Components: base
-Name: "{group}\{#MyAppName} Read Me"; Filename: "{app}\README.txt"; Components: base
-Name: "{group}\{#MyAppName} Customization instructions"; Filename: "{app}\CUSTOMIZE.txt"; Components: base
-
-Name: "{group}\{#MyAppName} Web Site"; Filename: "{app}\{#MyAppUrlName}"; Components: base
-Name: "{group}\{cm:UninstallProgram,{#MyAppName}}"; Filename: "{uninstallexe}"; Components: base
-
-Name: "{code:GetLgtUserDir}\manuals"; Filename: "{app}\manuals"; Components: user
-Name: "{code:GetLgtUserDir}\wenv"; Filename: "{app}\wenv"; Components: user
-
-Name: "{userdesktop}\Logtalk user files"; Filename: "{code:GetLgtUserDir}"; Components: user; Tasks: shortcut
-
-[Registry]
-Root: HKLM; Subkey: "SYSTEM\CurrentControlSet\Control\Session Manager\Environment"; ValueType: expandsz; ValueName: "LOGTALKHOME"; ValueData: "{app}"; Components: base; Flags: deletevalue uninsdeletevalue
-Root: HKCU; Subkey: "Environment"; ValueType: expandsz; ValueName: "LOGTALKUSER"; ValueData: "{code:GetLgtUserDir}"; Flags: deletevalue uninsdeletevalue
-
-[Run]
-Filename: "{cmd}"; Parameters: "/C set LOGTALKHOME={app} & cscript ""{app}\scripts\make_bplgt.js"""; Description: "B-Prolog integration"; Components: prolog\bp
-Filename: "{cmd}"; Parameters: "/C set LOGTALKHOME={app} & cscript ""{app}\scripts\make_ciaolgt.js"""; Description: "Ciao Prolog integration"; Components: prolog\ciao
-Filename: "{cmd}"; Parameters: "/C set LOGTALKHOME={app} & cscript ""{app}\scripts\make_eclipselgt.js"""; Description: "ECLiPSe integration"; Components: prolog\eclipse
-Filename: "{cmd}"; Parameters: "/C set LOGTALKHOME={app} & cscript ""{app}\scripts\make_gplgt.js"""; Description: "GNU Prolog integration"; Components: prolog\gprolog
-Filename: "{cmd}"; Parameters: "/C set LOGTALKHOME={app} & cscript ""{app}\scripts\make_plclgt.js"""; Description: "K-Prolog integration"; Components: prolog\plc
-Filename: "{cmd}"; Parameters: "/C set LOGTALKHOME={app} & cscript ""{app}\scripts\make_sicstuslgt.js"""; Description: "SICStus Prolog integration"; Components: prolog\sicstus
-Filename: "{cmd}"; Parameters: "/C set LOGTALKHOME={app} & cscript ""{app}\scripts\make_swilgt.js"""; Description: "SWI-Prolog integration"; Components: prolog\swi
-Filename: "{cmd}"; Parameters: "/C set LOGTALKHOME={app} & cscript ""{app}\scripts\make_xsblgt.js"""; Description: "XSB integration"; Components: prolog\xsb
-Filename: "{cmd}"; Parameters: "/C set LOGTALKHOME={app} & cscript ""{app}\scripts\make_yaplgt.js"""; Description: "YAP integration"; Components: prolog\yap
-
-Filename: "{app}\RELEASE_NOTES.txt"; Description: "View the release notes"; Components: base user; Flags: postinstall shellexec skipifsilent
-Filename: "{app}\CUSTOMIZE.txt"; Description: "Read the customization instructions for completing your setup"; Components: base user; Flags: postinstall shellexec skipifsilent
-
-Filename: "{app}\{#MyAppRegUrlName}"; Flags: shellexec nowait; Tasks: registration
-
-[UninstallDelete]
-Type: filesandordirs; Name: "{app}"; Components: base
-Type: filesandordirs; Name: "{group}"; Components: base
-
-[Code]
-var
-  LgtUserDirPage: TInputDirWizardPage;
-  WarningPage: TOutputMsgWizardPage;
-  Explanation, Warning, Scripts: String;
-
-procedure InitializeWizard;
-begin
-  Explanation := 'Select the folder in which Setup should install Logtalk user data files, then click Next.'
-                 + Chr(13) + Chr(13)
-                 + 'These files allows each user to independently customize Logtalk and to freely modify the provided programming examples.'
-                 + Chr(13) + Chr(13)
-                 + 'A copy of these files must exist in the user home folder in order to use the Logtalk-Prolog integration scripts available from the Start Menu.'
-                 + Chr(13) + Chr(13)
-                 + 'Addtional end-users may use this installer to make a copy of these files on their home folders after a full installation of Logtalk.';
-  LgtUserDirPage := CreateInputDirPage(wpSelectDir,
-    'Select folder for Logtalk user data files', 'Where should Logtalk user data files be installed?',
-    Explanation,
-    False, 'New Folder');
-  LgtUserDirPage.Add('');
-  LgtUserDirPage.Values[0] := ExpandConstant('{#LOGTALKUSER}');
-  if not IsAdminLoggedOn then
-  begin
-    Warning := 'Full installation of Logtalk requires an administrative user.'
-               + Chr(13) + Chr(13)
-               + 'If the base Logtalk system is already installed, you may proceed in order to setup Logtalk for you as an end-user.'
-               + Chr(13) + Chr(13)
-               + 'If Logtalk is already set for you, this installer will make a backup copy of your current files (if you choose the same installation folder) and will restore all user data files to their default, pristine state.';
-    WarningPage := CreateOutputMsgPage(wpWelcome,
-  'Information', 'Please read the following important information before continuing.', Warning);
-  end
-end;
-
-function GetLgtUserDir(Param: String): String;
-begin
-  Result := LgtUserDirPage.Values[0]
-end;
-
-function GetCurrentDate(Param: String): String;
-begin
-  Result := GetDateTimeString('dddddd tt', '-', '-')
-end;
-
-function ShouldSkipPage(PageID: Integer): Boolean;
-begin
-  if (PageID = wpSelectDir) and not IsAdminLoggedOn then
-    Result := True
-  else if (PageID = wpSelectComponents) and not IsAdminLoggedOn then
-  begin
-    WizardForm.TypesCombo.ItemIndex := 2;
-    WizardForm.TypesCombo.OnChange(nil);
-    Result := True
-  end
-  else if (PageID = wpReady) and not IsAdminLoggedOn then
-    Result := True
-  else
-    Result := False;
-end;
-
-procedure CurStepChanged(CurStep: TSetupStep);
-begin
-  if (CurStep = ssInstall) and DirExists(LgtUserDirPage.Values[0]) and (pos('backup', WizardSelectedComponents(False)) > 0) then
-    RenameFile(LgtUserDirPage.Values[0], LgtUserDirPage.Values[0] + ' backup ' + GetDateTimeString('dddddd tt', '-', '-'));
-  if (CurStep = ssInstall) and (pos('prolog', WizardSelectedComponents(False)) > 0) then
-  begin
-    Scripts := 'The installer needs to run a set of JScripts scripts within command shells' + Chr(13) +
-               'in order to integrate Logtalk with your installed Prolog compilers.' + Chr(13) + Chr(13) +
-               'These scripts require WSH 5.6 (or later version) to be installed.' + Chr(13) + Chr(13) +
-               'Make sure that any security software you may have installed do not block' + Chr(13) +
-               'the execution of the scripts.';
-    MsgBox(Scripts, mbInformation, MB_OK)
-  end
-end;
-
diff --git a/Logtalk/scripts/logtalk.spec b/Logtalk/scripts/logtalk.spec
deleted file mode 100644
index b15cde347..000000000
--- a/Logtalk/scripts/logtalk.spec
+++ /dev/null
@@ -1,95 +0,0 @@
-Name: logtalk
-Summary: Logtalk - Open source object-oriented extension to Prolog
-Version: 2.28.2
-Release: 1
-License: Artistic License 2.0
-Group: Development/Languages
-Packager: Paulo Moura 
-Source: http://logtalk.org/files/lgt2282.tgz
-BuildArchitectures: noarch
-URL: http://logtalk.org/
-Prefix: /usr/local
-AutoReqProv: no
-%description
-Logtalk is an open source object-oriented extension to the Prolog programming language. Integrating logic programming with object-oriented and event-driven programming, it is compatible with most Prolog compilers. It supports both prototypes and classes. In addition, it supports component-based programming through category-based composition.
-%prep
-%setup -n lgt2282
-%build
-%install
-rm -rf /usr/local/lgt2282
-rm -f /usr/local/logtalk
-mkdir /usr/local/lgt2282
-cp -R * /usr/local/lgt2282
-cd /usr/local
-chmod -R go-w,a+r lgt2282
-chmod a+x lgt2282
-chmod a+x lgt2282/scripts/*.sh
-chmod a+x lgt2282/xml/*.sh
-ln -sf lgt2282 logtalk
-cd bin
-ln -sf ../logtalk/scripts/cplgtdirs.sh cplgtdirs
-ln -sf ../logtalk/xml/lgt2pdf.sh lgt2pdf
-ln -sf ../logtalk/xml/lgt2html.sh lgt2html
-ln -sf ../logtalk/xml/lgt2xml.sh lgt2xml
-%clean
-%files
-%defattr(-,root,users)
-%doc /usr/local/lgt2282/BIBLIOGRAPHY.bib
-%doc /usr/local/lgt2282/CUSTOMIZE.txt
-%doc /usr/local/lgt2282/INSTALL.txt
-%doc /usr/local/lgt2282/LICENSE.txt
-%doc /usr/local/lgt2282/QUICK_START.txt
-%doc /usr/local/lgt2282/README.txt
-%doc /usr/local/lgt2282/RELEASE_NOTES.txt
-%doc /usr/local/lgt2282/UPGRADING.txt
-/usr/local/lgt2282/compiler
-/usr/local/lgt2282/configs
-/usr/local/lgt2282/contributions
-/usr/local/lgt2282/examples
-/usr/local/lgt2282/libpaths
-/usr/local/lgt2282/library
-%docdir /usr/local/lgt2282/manuals
-/usr/local/lgt2282/manuals
-/usr/local/lgt2282/scripts
-/usr/local/lgt2282/wenv
-/usr/local/lgt2282/xml
-/usr/local/logtalk
-/usr/local/bin/cplgtdirs
-/usr/local/bin/lgt2pdf
-/usr/local/bin/lgt2html
-/usr/local/bin/lgt2xml
-%post
-mkdir -p /etc/profile.d
-echo "# Logtalk environment setup" > /etc/profile.d/logtalk.sh
-echo "" >> /etc/profile.d/logtalk.sh
-echo "# Logtalk installation directory:" >> /etc/profile.d/logtalk.sh
-echo "export LOGTALKHOME=$RPM_INSTALL_PREFIX/logtalk" >> /etc/profile.d/logtalk.sh
-echo "" >> /etc/profile.d/logtalk.sh
-echo "# Default location for Logtalk end-user files:" >> /etc/profile.d/logtalk.sh
-echo "export LOGTALKUSER=$HOME/logtalk" >> /etc/profile.d/logtalk.sh
-chmod a+x /etc/profile.d/logtalk.sh
-echo "# Logtalk environment setup" > /etc/profile.d/logtalk.csh
-echo "" >> /etc/profile.d/logtalk.csh
-echo "# Logtalk installation directory:" >> /etc/profile.d/logtalk.csh
-echo "setenv LOGTALKHOME $RPM_INSTALL_PREFIX/logtalk" >> /etc/profile.d/logtalk.csh
-echo "" >> /etc/profile.d/logtalk.csh
-echo "# Default location for Logtalk end-user files:" >> /etc/profile.d/logtalk.csh
-echo "setenv LOGTALKUSER $HOME/logtalk" >> /etc/profile.d/logtalk.csh
-chmod a+x /etc/profile.d/logtalk.csh
-eval export LOGTALKHOME=$RPM_INSTALL_PREFIX/logtalk; cd $LOGTALKHOME/scripts; ./makeall_lgt.sh $RPM_INSTALL_PREFIX
-echo ""
-echo "Defined the following environment variables for all users:"
-echo ""
-echo "  Logtalk installation directory: LOGTALKHOME = $RPM_INSTALL_PREFIX/logtalk"
-echo "  Default Logtalk user files directory: LOGTALKUSER = $HOME/logtalk"
-echo ""
-echo "You may need to logout and login again or start a new shell in order to"
-echo "use the new environment variables."
-echo ""
-echo "You may change the default value of the LOGTALKUSER environment variable"
-echo "in your shell configuration files if you already use, or want to use, a 
-echo "different location for the Logtalk user files directory."
-echo ""
-%postun
-rm -f /etc/profile.d/logtalk.sh
-rm -f /etc/profile.d/logtalk.csh
diff --git a/Logtalk/scripts/macosx/NOTES.txt b/Logtalk/scripts/macosx/NOTES.txt
index c92cbf702..6cf6f0a38 100644
--- a/Logtalk/scripts/macosx/NOTES.txt
+++ b/Logtalk/scripts/macosx/NOTES.txt
@@ -1,9 +1,9 @@
-=================================================================
-Logtalk - Object oriented extension to Prolog
-Release 2.29.5
+================================================================
+Logtalk - Open source object-oriented logic programming language
+Release 2.30.1
 
 Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-=================================================================
+================================================================
 
 
 This directory contains files used when building MacOS X installer 
diff --git a/Logtalk/scripts/macosx/ReadMe.html b/Logtalk/scripts/macosx/ReadMe.html
index f48d36e28..84c25d126 100644
--- a/Logtalk/scripts/macosx/ReadMe.html
+++ b/Logtalk/scripts/macosx/ReadMe.html
@@ -1,6 +1,7 @@
-
    Logtalk - Object oriented extension to Prolog
    
+
    Logtalk
    
+
    Open source object-oriented logic programming language
    
 
-
    Release 2.29.5
    
+
    Release 2.30.1
    
 
 
    Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
    
 
@@ -41,8 +42,8 @@ about Logtalk.
    
 
 
    3. Registration
    
 
-
    To register as a Logtalk user either use the registration form found at 
-the Logtalk web site or send an email message to:
    
+
    
+To register as a Logtalk user either use the registration form found at the Logtalk web site, http://logtalk.org/regform.html, or send an email message to:
    
 
 
    
   
    registration@logtalk.org
    
@@ -56,29 +57,9 @@ platforms (mac, pc, unix,...) (optional)
    
 
 
    4. Support
    
 
-
    Logtalk support is available for registered users via email to 
-support@logtalk.org.
    
-
-
    At the URL http://logtalk.org/bugs.html you can find a list of known 
-problems and download bug fixes. The latest news about Logtalk are
-available at the URL http://logtalk.org/news.html.
    
-
-
    There is also a mailing list, "logtalk", used to announce new releases and
-bug fixes and for discussion between registered Logtalk users, that you 
-may subscribe. For instructions on how to subscribe, please visit the web 
-page:
    
-
-
    
-  
    http://lserv.ci.uc.pt/mailman/listinfo/logtalk
    
-
    
-
-
    or send an email message to:
    
-
-
    
-  
    logtalk-request@lserv.ci.uc.pt
    
-
    
-
-
    with just the word "help" in the subject or in the message body.
    
+
    
+For support options, please consult the page http://logtalk.org/support.html.
+
    
 
 
    5. Installation
    
 
@@ -99,7 +80,7 @@ Logtalk installation and working environment.
    
 
 
    7. Quick start
    
 
-
    The file QUICK_START provides quick instructions for those of you in a hurry 
+
    The file QUICK_START.txt provides quick instructions for those of you in a hurry 
 to run Logtalk, provided that your favorite Prolog compiler is supported.
    
 
 
    7. Documentation
    
@@ -107,20 +88,20 @@ to run Logtalk, provided that your favorite Prolog compiler is supported.
    
 
    The reference and user manuals and the tutorial are provided in XHTML format 
 and can be found in the "manuals" directory.
    
 
-
    The file RELEASE_NOTES contains descriptions of all Logtalk updates since the 
+
    The file RELEASE_NOTES.txt contains descriptions of all Logtalk updates since the 
 first public version. Read it carefully if you have been using a previous 
 Logtalk version.
    
 
 
    8. Upgrading
    
 
 
    If you are upgrading from a previous Logtalk version, please check the file 
-UPGRADING for instructions on how to upgrade your programs or your custom 
+UPGRADING.txt for instructions on how to upgrade your programs or your custom 
 configuration files to run under this new version.
    
 
 
    9. Citations
    
 
 
    If you want to cite Logtalk in your publications, please consult the file 
-BIBLIOGRAPHY for bibliographic references in BibTeX format.
    
+BIBLIOGRAPHY.bib for bibliographic references in BibTeX format.
    
 
 
    10. Contributions
    
 
diff --git a/Logtalk/scripts/macosx/Welcome.html b/Logtalk/scripts/macosx/Welcome.html
index 2d885e006..0126eca66 100644
--- a/Logtalk/scripts/macosx/Welcome.html
+++ b/Logtalk/scripts/macosx/Welcome.html
@@ -8,10 +8,10 @@
 Welcome to the Logtalk for Mac OS X Installer
 
    
 
    
-Logtalk is an open source object-oriented extension to the Prolog programming language. Integrating logic programming with object-oriented and event-driven programming, it is compatible with most Prolog compilers. It supports both prototypes and classes. In addition, it supports component-based programming through category-based composition.
+Logtalk is an open source object-oriented logic programming language that can use most Prolog implementations as a back-end compiler. As a multi-paradigm language, Logtalk includes support for both prototypes and classes, protocols, component-based programming through category-based composition, event-driven programming, and multi-threading programming.
 
    
 
    
-This installer guides you through the steps necessary to install Logtalk for Mac OS X. Logtalk is installed on the /opt/local/share/logtalk directory. After completing the installation, each Logtalk end-user must run the shell command cplgtdirs once before using the Logtalk – Prolog integration scripts. This command creates a folder named logtalk on the user's home directory containing configuration files, examples, and documentation. Inside this folder is a link to a CUSTOMIZE.txt file describes how to customize Logtalk for your personal use. Links to the Logtalk – Prolog integration scripts are created on the /opt/local/bin directory, which must be on your system path. The integration scripts are described on the /opt/local/share/logtalk/scripts/NOTES.txt file.
+This installer guides you through the steps necessary to install Logtalk for Mac OS X. Logtalk is installed on the /opt/local/share/logtalk directory. A link to the Logtalk installation folder is automatically created on the Applications folder. After completing the installation, each Logtalk end-user must run the shell command cplgtdirs once before using the Prolog integration scripts. This command creates a folder named logtalk on the user's home directory containing configuration files, examples, and documentation. Inside this folder is a link to a CUSTOMIZE.txt file describes how to customize Logtalk for your personal use. Links to the Prolog integration scripts are created on the /opt/local/bin directory, which must be on your system path. See the /Applications/Logtalk/QUICK_START.txt file for instructions on how to run Logtalk.
 
    
 
    
 To get started, click Continue.
diff --git a/Logtalk/scripts/macosx/postflight b/Logtalk/scripts/macosx/postflight
index 76b61781f..f03a50d44 100644
--- a/Logtalk/scripts/macosx/postflight
+++ b/Logtalk/scripts/macosx/postflight
@@ -1,14 +1,14 @@
 #!/bin/bash
 
-## =================================================================
-## Logtalk - Object oriented extension to Prolog
-## Release 2.29.5
+## ================================================================
+## Logtalk - Open source object-oriented logic programming language
+## Release 2.30.1
 ##
 ## Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-## =================================================================
+## ================================================================
 
 echo ""
-echo "Checking the LOGTALKHOME environment variable definition..."
+echo "Checking for the Logtalk environment variable definitions..."
 echo ""
 
 if grep "LOGTALKHOME=/opt/local/share/logtalk" /etc/profile >/dev/null 2>&1; then
@@ -32,6 +32,10 @@ else
 	echo 'setenv LOGTALKUSER $HOME/logtalk' >> /etc/csh.cshrc
 fi
 
+echo ""
+echo "Creating a link to the Logtalk installation folder in the /Applications folder..."
+ln -sf /opt/local/share/logtalk /Applications/Logtalk
+
 echo ""
 echo "You have succesfully installed Logtalk!"
 echo ""
diff --git a/Logtalk/scripts/make_bplgt.js b/Logtalk/scripts/make_bplgt.js
deleted file mode 100644
index a310945d1..000000000
Binary files a/Logtalk/scripts/make_bplgt.js and /dev/null differ
diff --git a/Logtalk/scripts/make_bplgt.sh b/Logtalk/scripts/make_bplgt.sh
deleted file mode 100755
index 792458ab0..000000000
--- a/Logtalk/scripts/make_bplgt.sh
+++ /dev/null
@@ -1,63 +0,0 @@
-#!/bin/sh
-
-## =================================================================
-## Logtalk - Object oriented extension to Prolog
-## Release 2.29.5
-##
-## Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-## =================================================================
-
-echo
-echo "Creating a script named bplgt for running Logtalk with B-Prolog ..."
-echo
-
-if ! [ "$LOGTALKHOME" ]
-then
-	echo "The environment variable LOGTALKHOME must be defined first!"
-	echo
-	exit 1
-fi
-
-if ! [ -d "$LOGTALKHOME" ]; then
-	echo "The environment variable LOGTALKHOME points to a non-existing directory!"
-	echo "Its current value is: $LOGTALKHOME"
-	echo "The variable must be set to your Logtalk installation directory!"
-	echo
-	exit 1
-fi
-
-if [ -z "$1" ]; then
-	prefix=/usr/local
-else
-	prefix="$1"
-fi
-
-if ! [ -d "$prefix" ]; then
-	echo "Directory prefix does not exist!"
-	echo
-	exit 1
-fi
-
-cd "$LOGTALKHOME"
-mkdir -p bin
-cd bin
-eval bp -g "\"set_prolog_flag(redefined, off), compile('../compiler/logtalk.pl').\""
-mv ../compiler/logtalk.pl.out .
-
-echo ":- set_prolog_flag(redefined, off)." > logtalk_bp.pl
-echo ":- compile('\$LOGTALKUSER/configs/b.config')." >> logtalk_bp.pl
-echo ":- load('\$LOGTALKUSER/configs/b.config')." >> logtalk_bp.pl
-echo ":- load('\$LOGTALKHOME/bin/logtalk.pl')." >> logtalk_bp.pl
-echo ":- compile('\$LOGTALKUSER/libpaths/libpaths.pl')." >> logtalk_bp.pl
-echo ":- load('\$LOGTALKUSER/libpaths/libpaths.pl')." >> logtalk_bp.pl
-
-echo "#/bin/sh" > bplgt
-echo "bp -g  \"consult('\\\$LOGTALKHOME/bin/logtalk_bp.pl'), \\\$bp_top_level\" \"\$@\"" >> bplgt
-chmod a+x bplgt
-ln -sf $LOGTALKHOME/bin/bplgt $prefix/bin/bplgt
-echo "Done. A link to the script was been created in $prefix/bin."
-echo
-echo "Users should ensure that the environment variables LOGTALKHOME"
-echo "and LOGTALKUSER are defined and then run the \"cplgtdirs\" script"
-echo "once prior to using the bplgt script."
-echo
diff --git a/Logtalk/scripts/make_ciaolgt.js b/Logtalk/scripts/make_ciaolgt.js
deleted file mode 100644
index 095be7438..000000000
--- a/Logtalk/scripts/make_ciaolgt.js
+++ /dev/null
@@ -1,117 +0,0 @@
-// =================================================================
-// Logtalk - Object oriented extension to Prolog
-// Release 2.29.5
-//
-// Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-// =================================================================
-
-if (ScriptEngineMajorVersion() < 5 || ScriptEngineMajorVersion() == 5 && ScriptEngineMinorVersion() < 6) {
-	WScript.Echo('Error! WSH 5.6 or later version needed for running this script.');
-	WScript.Quit(1);
-}
-
-if (WScript.Arguments.Unnamed.Length > 0) {
-	usage_help();
-	WScript.Quit(0);
-}
-
-WScript.Echo('');
-WScript.Echo('Creating a shortcut named "Logtalk - CIAO" for running Logtalk');
-WScript.Echo('with CIAO...');
-WScript.Echo('');
-
-var WshShell = new ActiveXObject("WScript.Shell");
-
-var prolog_path = WshShell.RegRead("HKLM\\Software\\Ciao Prolog\\ciao_dir") + "\\shell\\ciaosh.cpx";
-
-var FSObject = new ActiveXObject("Scripting.FileSystemObject");
-
-if (!FSObject.FileExists(prolog_path)) {
-	WScript.Echo("Error! Cannot find ciaosh.cpx at the expected place!");
-	WScript.Echo("Please, edit the script and update the location of the ciaosh.cpx executable.");
-	WScript.Quit(1);
-}
-
-var WshSystemEnv = WshShell.Environment("SYSTEM");
-var WshUserEnv = WshShell.Environment("USER");
-var logtalk_home;
-
-if (WshSystemEnv.Item("LOGTALKHOME"))
-	logtalk_home = WshSystemEnv.Item("LOGTALKHOME");
-else if (WshUserEnv.Item("LOGTALKHOME"))
-	logtalk_home = WshUserEnv.Item("LOGTALKHOME")
-else {
-	WScript.Echo("Error! The system environment variable LOGTALKHOME must be defined first!");
-	usage_help();
-	WScript.Quit(1);
-}
-
-if (!FSObject.FolderExists(logtalk_home)) {
-	WScript.Echo("The environment variable LOGTALKHOME points to a non-existing directory!");
-	WScript.Echo("Its current value is: %LOGTALKHOME%");
-	WScript.Echo("The variable must be set to your Logtalk installation directory!");
-	WScript.Echo("");
-	usage_help();
-	WScript.Quit(1);
-}
-
-logtalk_home = logtalk_home.replace(/\\/g, "\\\\");
-
-if (!FSObject.FolderExists(logtalk_home + "\\bin")) 
-	FSObject.CreateFolder(logtalk_home + "\\bin");
-
-var f = FSObject.CreateTextFile(logtalk_home + "\\bin\\logtalk_ciao.pl", true);
-
-f.WriteLine(":- ensure_loaded('$LOGTALKUSER/configs/ciao_aux.config').");
-f.WriteLine(":- set_prolog_flag(multi_arity_warnings, off).");
-f.WriteLine(":- ensure_loaded('$LOGTALKHOME/compiler/logtalk.pl').");
-f.WriteLine(":- ensure_loaded('$LOGTALKUSER/libpaths/libpaths.pl').");
-f.WriteLine(":- op(600, xfy, ::).");
-f.WriteLine(":- op(600, fy, ::).");
-f.WriteLine(":- op(600, fy, ^^).");
-f.WriteLine(":- op(200, fy, +).");
-f.WriteLine(":- op(200, fy, ?).");
-f.WriteLine(":- op(200, fy, @).");
-f.WriteLine(":- op(200, fy, -).");
-f.Close();
-
-var ProgramsPath = WshShell.SpecialFolders("AllUsersPrograms");
-
-if (!FSObject.FolderExists(ProgramsPath + "\\Logtalk")) 
-	FSObject.CreateFolder(ProgramsPath + "\\Logtalk");
-
-var link = WshShell.CreateShortcut(ProgramsPath + "\\Logtalk\\Logtalk - CIAO.lnk");
-link.Arguments = '-l "$LOGTALKHOME/bin/logtalk_ciao.pl"';
-link.Description = 'Runs Logtalk with CIAO';
-link.IconLocation = 'app.exe,1';
-link.TargetPath = prolog_path;
-link.WindowStyle = 1;
-link.WorkingDirectory = logtalk_home;
-link.Save();
-
-WScript.Echo('Done. The "Logtalk - CIAO" shortcut was been added to the');
-WScript.Echo('Start Menu Programs. Make sure that the environment variables');
-WScript.Echo('LOGTALKHOME and LOGTALKUSER are defined for all users wishing');
-WScript.Echo('to use the shortcut.');
-WScript.Echo('');
-WScript.Echo('The first call to the shortcut must be made by a user with');
-WScript.Echo('administrative rights.');
-WScript.Echo('');
-WScript.Echo('Users must run the batch script "cplgtdirs" once before using');
-WScript.Echo('the "Logtalk - CIAO" shortcut.');
-WScript.Echo('');
-
-WScript.Quit(0);
-
-function usage_help() {
-	WScript.Echo('');
-	WScript.Echo('This script creates a shortcut named "Logtalk - CIAO" for running Logtalk');
-	WScript.Echo('with CIAO. The script must be run by a user with administrative rights.');
-	WScript.Echo('The LOGTALKHOME environment variable must be defined before running this');
-	WScript.Echo('script.');
-	WScript.Echo('');
-	WScript.Echo('Usage:');
-	WScript.Echo('  ' + WScript.ScriptName + ' help');
-	WScript.Echo('  ' + WScript.ScriptName);
-	WScript.Echo('');
-}
diff --git a/Logtalk/scripts/make_ciaolgt.sh b/Logtalk/scripts/make_ciaolgt.sh
deleted file mode 100755
index 0214158a8..000000000
--- a/Logtalk/scripts/make_ciaolgt.sh
+++ /dev/null
@@ -1,66 +0,0 @@
-#!/bin/sh
-
-## =================================================================
-## Logtalk - Object oriented extension to Prolog
-## Release 2.29.5
-##
-## Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-## =================================================================
-
-echo
-echo "Creating a script named ciaolgt for running Logtalk with CIAO..."
-echo
-
-if ! [ "$LOGTALKHOME" ]
-then
-	echo "The environment variable LOGTALKHOME must be defined first!"
-	echo
-	exit 1
-fi
-
-if ! [ -d "$LOGTALKHOME" ]; then
-	echo "The environment variable LOGTALKHOME points to a non-existing directory!"
-	echo "Its current value is: $LOGTALKHOME"
-	echo "The variable must be set to your Logtalk installation directory!"
-	echo
-	exit 1
-fi
-
-if [ -z "$1" ]; then
-	prefix=/usr/local
-else
-	prefix="$1"
-fi
-
-if ! [ -d "$prefix" ]; then
-	echo "Directory prefix does not exist!"
-	echo
-	exit 1
-fi
-
-cd "$LOGTALKHOME"
-mkdir -p bin
-cd bin
-echo ":- ensure_loaded('\$LOGTALKUSER/configs/ciao_aux.config')." > logtalk_ciao.pl
-echo ":- set_prolog_flag(multi_arity_warnings, off)." >> logtalk_ciao.pl
-echo ":- ensure_loaded('\$LOGTALKHOME/compiler/logtalk.pl')." >> logtalk_ciao.pl
-echo ":- ensure_loaded('\$LOGTALKUSER/libpaths/libpaths.pl')." >> logtalk_ciao.pl
-echo ":- op(600, xfy, ::)." >> logtalk_ciao.pl
-echo ":- op(600, fy, ::)." >> logtalk_ciao.pl
-echo ":- op(600, fy, ^^)." >> logtalk_ciao.pl
-echo ":- op(200, fy, +)." >> logtalk_ciao.pl
-echo ":- op(200, fy, ?)." >> logtalk_ciao.pl
-echo ":- op(200, fy, @)." >> logtalk_ciao.pl
-echo ":- op(200, fy, -)." >> logtalk_ciao.pl
-echo "#/bin/sh" > ciaolgt
-echo "ciaosh -l \"\$LOGTALKHOME/bin/logtalk_ciao.pl\" \"\$@\"" >> ciaolgt
-chmod a+x ciaolgt
-ln -sf $LOGTALKHOME/bin/ciaolgt $prefix/bin/ciaolgt
-echo "Done. A link to the script was been created in $prefix/bin."
-echo "The first call to the script the must be made as root or using"
-echo "sudo."
-echo
-echo "Users should ensure that the environment variables LOGTALKHOME"
-echo "and LOGTALKUSER are defined and then run the \"cplgtdirs\" script"
-echo "once prior to using the ciaolgt script."
-echo
diff --git a/Logtalk/scripts/make_eclipselgt.js b/Logtalk/scripts/make_eclipselgt.js
deleted file mode 100644
index e223de696..000000000
--- a/Logtalk/scripts/make_eclipselgt.js
+++ /dev/null
@@ -1,145 +0,0 @@
-// =================================================================
-// Logtalk - Object oriented extension to Prolog
-// Release 2.29.5
-//
-// Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-// =================================================================
-
-if (ScriptEngineMajorVersion() < 5 || ScriptEngineMajorVersion() == 5 && ScriptEngineMinorVersion() < 6) {
-	WScript.Echo('Error! WSH 5.6 or later version needed for running this script.');
-	WScript.Quit(1);
-}
-
-if (WScript.Arguments.Unnamed.Length > 0) {
-	usage_help();
-	WScript.Quit(0);
-}
-
-WScript.Echo('');
-WScript.Echo('Creating a shortcut named "Logtalk - ECLiPSe" for running Logtalk with');
-WScript.Echo('ECLiPSe 5.11 or 5.10 (edit this script if you are using a different version)...');
-WScript.Echo('');
-
-var WshShell = new ActiveXObject("WScript.Shell");
-
-var prolog_path;
-var prolog_path511;
-var prolog_path510;
-
-try {
-	prolog_path511 = WshShell.RegRead("HKLM\\Software\\IC-Parc\\Eclipse\\5.11\\ECLIPSEDIR") + "\\lib\\i386_nt\\eclipse.exe";
-}
-catch(e) {
-	prolog_path511 = "not_installed.lgt";
-}
-try {
-	prolog_path510 = WshShell.RegRead("HKLM\\Software\\IC-Parc\\Eclipse\\5.10\\ECLIPSEDIR") + "\\lib\\i386_nt\\eclipse.exe";
-}
-catch(e) {
-	prolog_path510 = "not_installed.lgt";
-}
-
-var FSObject = new ActiveXObject("Scripting.FileSystemObject");
-
-if (FSObject.FileExists(prolog_path511)) {
-	prolog_path = prolog_path511;
-}
-else if (FSObject.FileExists(prolog_path510)) {
-	prolog_path = prolog_path510;
-}
-else {
-	WScript.Echo("Error! Cannot find eclipse.exe at the expected place!");
-	WScript.Echo("Please, edit the script and update the location of the eclipse.exe executable.");
-	WScript.Quit(1);
-}
-
-var WshSystemEnv = WshShell.Environment("SYSTEM");
-var WshUserEnv = WshShell.Environment("USER");
-var logtalk_home;
-
-if (WshSystemEnv.Item("LOGTALKHOME"))
-	logtalk_home = WshSystemEnv.Item("LOGTALKHOME");
-else if (WshUserEnv.Item("LOGTALKHOME"))
-	logtalk_home = WshUserEnv.Item("LOGTALKHOME")
-else {
-	WScript.Echo("Error! The system environment variable LOGTALKHOME must be defined first!");
-	usage_help();
-	WScript.Quit(1);
-}
-
-if (!FSObject.FolderExists(logtalk_home)) {
-	WScript.Echo("The environment variable LOGTALKHOME points to a non-existing directory!");
-	WScript.Echo("Its current value is: %LOGTALKHOME%");
-	WScript.Echo("The variable must be set to your Logtalk installation directory!");
-	WScript.Echo("");
-	usage_help();
-	WScript.Quit(1);
-}
-
-logtalk_home = logtalk_home.replace(/\\/g, "\\\\");
-
-if (!FSObject.FolderExists(logtalk_home + "\\bin")) 
-	FSObject.CreateFolder(logtalk_home + "\\bin");
-
-var f1 = FSObject.CreateTextFile(logtalk_home + "\\bin\\logtalk_comp_eclipse.pl", true);
-var f2 = FSObject.OpenTextFile(logtalk_home + "\\compiler\\logtalk.pl", 1);
-var line;
-
-f1.WriteLine(":- pragma(system).");
-f1.WriteLine(":- pragma(nodebug).");
-while (!f2.AtEndOfStream) {
-	line = f2.ReadLine();
-	f1.WriteLine(line);
-}
-
-f1.Close();
-f2.Close();
-
-f = FSObject.CreateTextFile(logtalk_home + "\\bin\\logtalk_eclipse.pl", true);
-
-f.WriteLine(":- ensure_loaded(library(toplevel)).");
-f.WriteLine(":- cd('$LOGTALKUSER').");
-f.WriteLine(":- compile('configs/eclipseiso.config').");
-f.WriteLine(":- cd('$LOGTALKHOME').");
-f.WriteLine(":- compile('bin/logtalk_comp_eclipse.pl').");
-f.WriteLine(":- cd('$LOGTALKUSER').");
-f.WriteLine(":- compile('libpaths/libpaths.pl').");
-f.Close();
-
-var ProgramsPath = WshShell.SpecialFolders("AllUsersPrograms");
-
-if (!FSObject.FolderExists(ProgramsPath + "\\Logtalk")) 
-	FSObject.CreateFolder(ProgramsPath + "\\Logtalk");
-
-var link = WshShell.CreateShortcut(ProgramsPath + "\\Logtalk\\Logtalk - ECLiPSe.lnk");
-link.Arguments = '-b "%LOGTALKHOME%\\bin\\logtalk_eclipse.pl"';
-link.Description = 'Runs Logtalk with ECLiPSe';
-link.IconLocation = 'app.exe,1';
-link.TargetPath = prolog_path;
-link.WindowStyle = 1;
-link.WorkingDirectory = '%LOGTALKUSER%';
-link.Save();
-
-WScript.Echo('Done. The "Logtalk - ECLiPSe" shortcut was been added to the');
-WScript.Echo('Start Menu Programs. Make sure that the environment variables');
-WScript.Echo('LOGTALKHOME and LOGTALKUSER are defined for all users wishing');
-WScript.Echo('to use the shortcut.');
-WScript.Echo('');
-WScript.Echo('Users must run the batch script "cplgtdirs" once before using');
-WScript.Echo('the "Logtalk - ECLiPSe" shortcut.');
-WScript.Echo('');
-
-WScript.Quit(0);
-
-function usage_help() {
-	WScript.Echo('');
-	WScript.Echo('This script creates a shortcut named "Logtalk - ECLiPSe" for running Logtalk');
-	WScript.Echo('with ECLiPSe. The script must be run by a user with administrative rights.');
-	WScript.Echo('The LOGTALKHOME environment variable must be defined before running this');
-	WScript.Echo('script.');
-	WScript.Echo('');
-	WScript.Echo('Usage:');
-	WScript.Echo('  ' + WScript.ScriptName + ' help');
-	WScript.Echo('  ' + WScript.ScriptName);
-	WScript.Echo('');
-}
diff --git a/Logtalk/scripts/make_eclipselgt.sh b/Logtalk/scripts/make_eclipselgt.sh
deleted file mode 100755
index 282a84aaa..000000000
--- a/Logtalk/scripts/make_eclipselgt.sh
+++ /dev/null
@@ -1,64 +0,0 @@
-#!/bin/sh
-
-## =================================================================
-## Logtalk - Object oriented extension to Prolog
-## Release 2.29.5
-##
-## Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-## =================================================================
-
-echo
-echo "Creating a script named eclipselgt for running Logtalk with ECLiPSe..."
-echo
-
-if ! [ "$LOGTALKHOME" ]
-then
-	echo "The environment variable LOGTALKHOME must be defined first!"
-	echo
-	exit 1
-fi
-
-if ! [ -d "$LOGTALKHOME" ]; then
-	echo "The environment variable LOGTALKHOME points to a non-existing directory!"
-	echo "Its current value is: $LOGTALKHOME"
-	echo "The variable must be set to your Logtalk installation directory!"
-	echo
-	exit 1
-fi
-
-if [ -z "$1" ]; then
-	prefix=/usr/local
-else
-	prefix="$1"
-fi
-
-if ! [ -d "$prefix" ]; then
-	echo "Directory prefix does not exist!"
-	echo
-	exit 1
-fi
-
-cd "$LOGTALKHOME"
-mkdir -p bin
-cd bin
-
-echo ":- pragma(system)." > logtalk_comp_eclipse.pl
-echo ":- pragma(nodebug)." >> logtalk_comp_eclipse.pl
-echo ":- ensure_loaded(library(toplevel))." >> logtalk_comp_eclipse.pl
-echo ":- include('\$LOGTALKHOME/compiler/logtalk.pl')." >> logtalk_comp_eclipse.pl
-
-echo ":- compile('\$LOGTALKUSER/configs/eclipseiso.config')." > logtalk_eclipse.pl
-echo ":- compile('\$LOGTALKHOME/bin/logtalk_comp_eclipse.pl')." >> logtalk_eclipse.pl
-echo ":- compile('\$LOGTALKUSER/libpaths/libpaths.pl')." >> logtalk_eclipse.pl
-
-echo "#/bin/sh" > eclipselgt
-echo "eclipse -b \"\$LOGTALKHOME/bin/logtalk_eclipse.pl\" \"\$@\"" >> eclipselgt
-chmod a+x eclipselgt
-ln -sf $LOGTALKHOME/bin/eclipselgt $prefix/bin/eclipselgt
-
-echo "Done. A link to the script was been created in $prefix/bin."
-echo
-echo "Users should ensure that the environment variables LOGTALKHOME"
-echo "and LOGTALKUSER are defined and then run the \"cplgtdirs\" script"
-echo "once prior to using the eclipselgt script."
-echo
diff --git a/Logtalk/scripts/make_gplgt.js b/Logtalk/scripts/make_gplgt.js
deleted file mode 100644
index c9e2a3e11..000000000
--- a/Logtalk/scripts/make_gplgt.js
+++ /dev/null
@@ -1,114 +0,0 @@
-// =================================================================
-// Logtalk - Object oriented extension to Prolog
-// Release 2.29.5
-//
-// Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-// =================================================================
-
-if (ScriptEngineMajorVersion() < 5 || ScriptEngineMajorVersion() == 5 && ScriptEngineMinorVersion() < 6) {
-	WScript.Echo('Error! WSH 5.6 or later version needed for running this script.');
-	WScript.Quit(1);
-}
-
-if (WScript.Arguments.Unnamed.Length > 0) {
-	usage_help();
-	WScript.Quit(0);
-}
-
-WScript.Echo('');
-WScript.Echo('Creating a shortcut named "Logtalk - GNU Prolog" for running Logtalk');
-WScript.Echo('with GNU Prolog...');
-WScript.Echo('');
-
-var WshShell = new ActiveXObject("WScript.Shell");
-
-var prolog_path = WshShell.RegRead("HKCU\\Software\\GnuProlog\\RootPath") + "\\bin\\gprolog.exe";
-
-var FSObject = new ActiveXObject("Scripting.FileSystemObject");
-
-if (!FSObject.FileExists(prolog_path)) {
-	WScript.Echo("Error! Cannot find gprolog.exe at the expected place!");
-	WScript.Echo("Please, edit the script and update the location of the gprolog.exe executable.");
-	WScript.Quit(1);
-}
-
-var WshSystemEnv = WshShell.Environment("SYSTEM");
-var WshUserEnv = WshShell.Environment("USER");
-var logtalk_home;
-
-if (WshSystemEnv.Item("LOGTALKHOME"))
-	logtalk_home = WshSystemEnv.Item("LOGTALKHOME");
-else if (WshUserEnv.Item("LOGTALKHOME"))
-	logtalk_home = WshUserEnv.Item("LOGTALKHOME")
-else {
-	WScript.Echo("Error! The system environment variable LOGTALKHOME must be defined first!");
-	usage_help();
-	WScript.Quit(1);
-}
-
-if (!FSObject.FolderExists(logtalk_home)) {
-	WScript.Echo("The environment variable LOGTALKHOME points to a non-existing directory!");
-	WScript.Echo("Its current value is: %LOGTALKHOME%");
-	WScript.Echo("The variable must be set to your Logtalk installation directory!");
-	WScript.Echo("");
-	usage_help();
-	WScript.Quit(1);
-}
-
-logtalk_home = logtalk_home.replace(/\\/g, "\\\\");
-
-if (!FSObject.FolderExists(logtalk_home + "\\bin")) 
-	FSObject.CreateFolder(logtalk_home + "\\bin");
-
-FSObject.CopyFile(logtalk_home + "\\configs\\gnu.config", logtalk_home + "\\bin\\gnu.pl");
-
-var f1 = FSObject.CreateTextFile(logtalk_home + "\\bin\\logtalk_gp.pl", true);
-var f2 = FSObject.OpenTextFile(logtalk_home + "\\compiler\\logtalk.pl", 1);
-var line;
-
-f1.WriteLine(":- built_in.");
-while (!f2.AtEndOfStream) {
-	line = f2.ReadLine();
-	f1.WriteLine(line);
-}
-
-f1.Close();
-f2.Close();
-
-var ProgramsPath = WshShell.SpecialFolders("AllUsersPrograms");
-
-if (!FSObject.FolderExists(ProgramsPath + "\\Logtalk")) 
-	FSObject.CreateFolder(ProgramsPath + "\\Logtalk");
-
-var link = WshShell.CreateShortcut(ProgramsPath + "\\Logtalk\\Logtalk - GNU Prolog.lnk");
-link.Arguments = "--init-goal \"['$LOGTALKUSER/configs/gnu.config', '$LOGTALKHOME/bin/logtalk_gp.pl', '$LOGTALKUSER/libpaths/libpaths.pl']\"";
-link.Description = "Runs Logtalk with GNU Prolog";
-link.IconLocation = "app.exe,1";
-link.TargetPath = prolog_path;
-link.WindowStyle = 1;
-link.WorkingDirectory = logtalk_home;
-link.Save();
-
-WScript.Echo('Done. The "Logtalk - GNU Prolog" shortcut was been added to the');
-WScript.Echo('Start Menu Programs. Make sure that the environment variables');
-WScript.Echo('LOGTALKHOME and LOGTALKUSER are defined for all users wishing');
-WScript.Echo('to use the shortcut.');
-WScript.Echo('');
-WScript.Echo('Users must run the batch script "cplgtdirs" once before using');
-WScript.Echo('the "Logtalk - GNU Prolog" shortcut.');
-WScript.Echo('');
-
-WScript.Quit(0);
-
-function usage_help() {
-	WScript.Echo('');
-	WScript.Echo('This script creates a shortcut named "Logtalk - GNU Prolog" for running Logtalk');
-	WScript.Echo('with GNU Prolog. The script must be run by a user with administrative rights.');
-	WScript.Echo('The LOGTALKHOME environment variable must be defined before running this');
-	WScript.Echo('script.');
-	WScript.Echo('');
-	WScript.Echo('Usage:');
-	WScript.Echo('  ' + WScript.ScriptName + ' help');
-	WScript.Echo('  ' + WScript.ScriptName);
-	WScript.Echo('');
-}
diff --git a/Logtalk/scripts/make_gplgt.sh b/Logtalk/scripts/make_gplgt.sh
deleted file mode 100755
index 0bcac5c24..000000000
--- a/Logtalk/scripts/make_gplgt.sh
+++ /dev/null
@@ -1,55 +0,0 @@
-#!/bin/sh
-
-## =================================================================
-## Logtalk - Object oriented extension to Prolog
-## Release 2.29.5
-##
-## Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-## =================================================================
-
-echo
-echo "Creating a script named gplgt for running Logtalk with GNU Prolog..."
-echo
-
-if ! [ "$LOGTALKHOME" ]
-then
-	echo "The environment variable LOGTALKHOME must be defined first!"
-	echo
-	exit 1
-fi
-
-if ! [ -d "$LOGTALKHOME" ]; then
-	echo "The environment variable LOGTALKHOME points to a non-existing directory!"
-	echo "Its current value is: $LOGTALKHOME"
-	echo "The variable must be set to your Logtalk installation directory!"
-	echo
-	exit 1
-fi
-
-if [ -z "$1" ]; then
-	prefix=/usr/local
-else
-	prefix="$1"
-fi
-
-if ! [ -d "$prefix" ]; then
-	echo "Directory prefix does not exist!"
-	echo
-	exit 1
-fi
-
-cd "$LOGTALKHOME"
-mkdir -p bin
-cd bin
-echo ":- built_in." > logtalk_gp.pl
-cat ../compiler/logtalk.pl >> logtalk_gp.pl
-echo "#/bin/sh" > gplgt
-echo "gprolog --init-goal \"['\$LOGTALKUSER/configs/gnu.config', '\$LOGTALKHOME/bin/logtalk_gp.pl', '\$LOGTALKUSER/libpaths/libpaths.pl']\" \"\$@\"" >> gplgt
-chmod a+x gplgt
-ln -sf $LOGTALKHOME/bin/gplgt $prefix/bin/gplgt
-echo "Done. A link to the script was been created in $prefix/bin."
-echo
-echo "Users should ensure that the environment variables LOGTALKHOME"
-echo "and LOGTALKUSER are defined and then run the \"cplgtdirs\" script"
-echo "once prior to using the gplgt script."
-echo
diff --git a/Logtalk/scripts/make_plclgt.js b/Logtalk/scripts/make_plclgt.js
deleted file mode 100644
index 83c7ad863..000000000
--- a/Logtalk/scripts/make_plclgt.js
+++ /dev/null
@@ -1,115 +0,0 @@
-// =================================================================
-// Logtalk - Object oriented extension to Prolog
-// Release 2.29.5
-//
-// Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-// =================================================================
-
-if (ScriptEngineMajorVersion() < 5 || ScriptEngineMajorVersion() == 5 && ScriptEngineMinorVersion() < 6) {
-	WScript.Echo('Error! WSH 5.6 or later version needed for running this script.');
-	WScript.Quit(1);
-}
-
-if (WScript.Arguments.Unnamed.Length > 0) {
-	usage_help();
-	WScript.Quit(0);
-}
-
-WScript.Echo('');
-WScript.Echo('Creating a shortcut named "Logtalk - K-Prolog" for running Logtalk');
-WScript.Echo('with K-Prolog...');
-WScript.Echo('');
-
-var WshShell = new ActiveXObject("WScript.Shell");
-var WshSystemEnv = WshShell.Environment("SYSTEM");
-var WshUserEnv = WshShell.Environment("USER");
-
-var prolog_path;
-
-if (WshSystemEnv.Item("PLC"))
-	prolog_path = WshSystemEnv.Item("PLC") + "\\plc.exe";
-else if (WshUserEnv.Item("PLC"))
-	prolog_path = WshUserEnv.Item("PLC") + "\\plc.exe"
-else {
-	WScript.Echo("Error! The K-Prolog environment variable PLC must be defined first!");
-	usage_help();
-	WScript.Quit(1);
-}
-
-var FSObject = new ActiveXObject("Scripting.FileSystemObject");
-
-if (!FSObject.FileExists(prolog_path)) {
-	WScript.Echo("Error! Cannot find plc.exe at the expected place!");
-	WScript.Quit(1);
-}
-
-var logtalk_home;
-
-if (WshSystemEnv.Item("LOGTALKHOME"))
-	logtalk_home = WshSystemEnv.Item("LOGTALKHOME");
-else if (WshUserEnv.Item("LOGTALKHOME"))
-	logtalk_home = WshUserEnv.Item("LOGTALKHOME")
-else {
-	WScript.Echo("Error! The environment variable LOGTALKHOME must be defined first!");
-	usage_help();
-	WScript.Quit(1);
-}
-
-if (!FSObject.FolderExists(logtalk_home)) {
-	WScript.Echo("The environment variable LOGTALKHOME points to a non-existing directory!");
-	WScript.Echo("Its current value is: %LOGTALKHOME%");
-	WScript.Echo("The variable must be set to your Logtalk installation directory!");
-	WScript.Echo("");
-	usage_help();
-	WScript.Quit(1);
-}
-
-logtalk_home = logtalk_home.replace(/\\/g, "\\\\");
-
-if (!FSObject.FolderExists(logtalk_home + "\\bin"))
-	FSObject.CreateFolder(logtalk_home + "\\bin");
-
-f = FSObject.CreateTextFile(logtalk_home + "\\bin\\logtalk_plc.pl", true);
-
-f.WriteLine(":- consult('$LOGTALKUSER/configs/k.config').");
-f.WriteLine(":- consult('$LOGTALKHOME/compiler/logtalk.pl').");
-f.WriteLine(":- consult('$LOGTALKUSER/libpaths/libpaths.pl').");
-f.Close();
-
-var ProgramsPath = WshShell.SpecialFolders("AllUsersPrograms");
-
-if (!FSObject.FolderExists(ProgramsPath + "\\Logtalk")) 
-	FSObject.CreateFolder(ProgramsPath + "\\Logtalk");
-
-var link = WshShell.CreateShortcut(ProgramsPath + "\\Logtalk\\Logtalk - K-Prolog.lnk");
-link.Arguments = "-h 2048k -l 1024k -g 2048k -e \"(consult('$LOGTALKHOME/bin/logtalk_plc.pl'), '$root').\"";
-link.Description = "Runs Logtalk with K-Prolog";
-link.IconLocation = "app.exe,1";
-link.TargetPath = prolog_path;
-link.WindowStyle = 1;
-link.WorkingDirectory = logtalk_home;
-link.Save();
-
-WScript.Echo('Done. The "Logtalk - K-Prolog" shortcut was been added to the');
-WScript.Echo('Start Menu Programs. Make sure that the environment variables');
-WScript.Echo('LOGTALKHOME and LOGTALKUSER are defined for all users wishing');
-WScript.Echo('to use the shortcut.');
-WScript.Echo('');
-WScript.Echo('Users must run the batch script "cplgtdirs" once before using');
-WScript.Echo('the "Logtalk - K-Prolog" shortcut.');
-WScript.Echo('');
-
-WScript.Quit(0);
-
-function usage_help() {
-	WScript.Echo('');
-	WScript.Echo('This script creates a shortcut named "Logtalk - K-Prolog" for');
-	WScript.Echo('running Logtalk with K-Prolog. The script must be run by a user');
-	WScript.Echo('with administrative rights. The LOGTALKHOME environment variable');
-	WScript.Echo('must be defined before running this script.');
-	WScript.Echo('');
-	WScript.Echo('Usage:');
-	WScript.Echo('  ' + WScript.ScriptName + ' help');
-	WScript.Echo('  ' + WScript.ScriptName);
-	WScript.Echo('');
-}
diff --git a/Logtalk/scripts/make_plclgt.sh b/Logtalk/scripts/make_plclgt.sh
deleted file mode 100755
index 01ffd3e22..000000000
--- a/Logtalk/scripts/make_plclgt.sh
+++ /dev/null
@@ -1,56 +0,0 @@
-#!/bin/sh
-
-## =================================================================
-## Logtalk - Object oriented extension to Prolog
-## Release 2.29.5
-##
-## Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-## =================================================================
-
-echo
-echo "Creating a script named plclgt for running Logtalk with K-Prolog..."
-echo
-
-if ! [ "$LOGTALKHOME" ]
-then
-	echo "The environment variable LOGTALKHOME must be defined first!"
-	echo
-	exit 1
-fi
-
-if ! [ -d "$LOGTALKHOME" ]; then
-	echo "The environment variable LOGTALKHOME points to a non-existing directory!"
-	echo "Its current value is: $LOGTALKHOME"
-	echo "The variable must be set to your Logtalk installation directory!"
-	echo
-	exit 1
-fi
-
-if [ -z "$1" ]; then
-	prefix=/usr/local
-else
-	prefix="$1"
-fi
-
-if ! [ -d "$prefix" ]; then
-	echo "Directory prefix does not exist!"
-	echo
-	exit 1
-fi
-
-cd "$LOGTALKHOME"
-mkdir -p bin
-cd bin
-echo ":- ensure_loaded('\$LOGTALKUSER/configs/k.config')." > logtalk_plc.pl
-echo ":- ensure_loaded('\$LOGTALKHOME/compiler/logtalk.pl')." >> logtalk_plc.pl
-echo ":- ensure_loaded('\$LOGTALKUSER/libpaths/libpaths.pl')." >> logtalk_plc.pl
-echo "#/bin/sh" > plclgt
-echo "\$PLC/plc -h 2048k -l 1024k -g 2048k -e \"(consult('\\\$LOGTALKHOME/bin/logtalk_plc.pl'), '\\\$root').\" \"\$@\"" >> plclgt
-chmod a+x plclgt
-ln -sf $LOGTALKHOME/bin/plclgt $prefix/bin/plclgt
-echo "Done. A link to the script was been created in $prefix/bin."
-echo
-echo "Users should ensure that the environment variables LOGTALKHOME"
-echo "and LOGTALKUSER are defined and then run the \"cplgtdirs\" script"
-echo "once prior to using the plclgt script."
-echo
diff --git a/Logtalk/scripts/make_qplgt.sh b/Logtalk/scripts/make_qplgt.sh
index 874c6c87f..9f57f7dd2 100755
--- a/Logtalk/scripts/make_qplgt.sh
+++ b/Logtalk/scripts/make_qplgt.sh
@@ -1,29 +1,48 @@
 #!/bin/sh
 
-## =================================================================
-## Logtalk - Object oriented extension to Prolog
-## Release 2.29.5
+## ================================================================
+## Logtalk - Open source object-oriented logic programming language
+## Release 2.30.1
 ##
 ## Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-## =================================================================
+## ================================================================
+
+#	makes a shell script named "qplgt" for running Logtalk with Qu-Prolog 
+#	(based on script code contributed by Peter Robinson); this script does 
+#	not read at runtime the config and the libpaths files: you will need to 
+#	run this script again if you modify these files
+
 
 echo
 echo "Creating a script named qplgt for running Logtalk with Qu-Prolog..."
 echo
 
-if ! [ "$LOGTALKHOME" ]
-then
-	echo "The environment variable LOGTALKHOME must be defined first!"
-	echo
-	exit 1
-fi
-
-if ! [ -d "$LOGTALKHOME" ]; then
-	echo "The environment variable LOGTALKHOME points to a non-existing directory!"
-	echo "Its current value is: $LOGTALKHOME"
-	echo "The variable must be set to your Logtalk installation directory!"
-	echo
-	exit 1
+if ! [ "$LOGTALKHOME" ]; then
+	echo "The environment variable LOGTALKHOME should be defined first!"
+	echo "Trying default Logtalk installation directories..."
+	if [ -d "/usr/local/share/logtalk" ]; then
+		LOGTALKHOME=/usr/local/share/logtalk
+		echo "Using Logtalk installation at \"/usr/local/share/logtalk\""
+	elif [ -d "/usr/share/logtalk" ]; then
+		LOGTALKHOME=/usr/share/logtalk
+		echo "Using Logtalk installation at \"/usr/share/logtalk\""
+	elif [ -d "/opt/local/share/logtalk" ]; then
+		LOGTALKHOME=/opt/local/share/logtalk
+		echo "Using Logtalk installation at \"/opt/local/share/logtalk\""
+	elif [ -d "/opt/share/logtalk" ]; then
+		LOGTALKHOME=/opt/share/logtalk
+		echo "Using Logtalk installation at \"/opt/share/logtalk\""
+	else
+		echo "Unable to locate Logtalk installation directory!"
+		echo
+		exit 1
+	fi
+	elif ! [ -d "$LOGTALKHOME" ]; then
+		echo "The environment variable LOGTALKHOME points to a non-existing directory!"
+		echo "Its current value is: $LOGTALKHOME"
+		echo "The variable must be set to your Logtalk installation directory!"
+		echo
+		exit 1
 fi
 
 if [ -z "$1" ]; then
@@ -40,6 +59,7 @@ fi
 
 cd "$LOGTALKHOME"
 mkdir -p bin
+
 cd configs
 cp qu.config qu.ql
 echo "fcompile('qu.ql', [assemble_only(true)]), load(qu). \
@@ -49,12 +69,16 @@ qc -c qphook.ql
 cd ../bin
 qc -s 3072 -d 1024 -h 2048 -o qplgt ../configs/qphook.qo ../configs/qu.qo ../compiler/logtalk.qo  ../libpaths/libpaths.qo
 chmod a+x qplgt
+
+mkdir -p $prefix/bin
 ln -sf $LOGTALKHOME/bin/qplgt $prefix/bin/qplgt
+
 rm ../configs/qu.ql
 rm ../configs/qphook.qo
 rm ../configs/qu.qo
 rm ../compiler/logtalk.qo
 rm ../libpaths/libpaths.qo
+
 echo "Done. A link to the script was been created in $prefix/bin."
 echo "The script must be regenerated whenever changes are made to"
 echo "either the config file or the libpaths file."
diff --git a/Logtalk/scripts/make_sicstuslgt.js b/Logtalk/scripts/make_sicstuslgt.js
deleted file mode 100644
index 40891aee6..000000000
--- a/Logtalk/scripts/make_sicstuslgt.js
+++ /dev/null
@@ -1,130 +0,0 @@
-// =================================================================
-// Logtalk - Object oriented extension to Prolog
-// Release 2.29.5
-//
-// Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-// =================================================================
-
-if (ScriptEngineMajorVersion() < 5 || ScriptEngineMajorVersion() == 5 && ScriptEngineMinorVersion() < 6) {
-	WScript.Echo('Error! WSH 5.6 or later version needed for running this script.');
-	WScript.Quit(1);
-}
-
-if (WScript.Arguments.Unnamed.Length > 0) {
-	usage_help();
-	WScript.Quit(0);
-}
-
-WScript.Echo('');
-WScript.Echo('Creating a shortcut named "Logtalk - SICStus Prolog" for running Logtalk with');
-WScript.Echo('SICStus Prolog 4.0 or 3.12 (edit the script if you are using other version)...');
-WScript.Echo('');
-
-var WshShell = new ActiveXObject("WScript.Shell");
-
-var prolog_path;
-var prolog_path4;
-var prolog_path3;
-var config_file;
-
-try {
-	prolog_path4 = WshShell.RegRead("HKLM\\Software\\SICS\\SICStus4.0_win32\\SP_PATH") + "\\bin\\spwin.exe";
-}
-catch(e) {
-	prolog_path4 = "not_installed.lgt";
-}
-try {
-	prolog_path3 = WshShell.RegRead("HKLM\\Software\\SICS\\SICStus3.12_win32\\SP_PATH") + "\\bin\\spwin.exe";
-}
-catch(e) {
-	prolog_path3 = "not_installed.lgt";
-}
-
-var FSObject = new ActiveXObject("Scripting.FileSystemObject");
-
-if (FSObject.FileExists(prolog_path4)) {
-	prolog_path = prolog_path4;
-	config_file = "sicstus4.config";
-}
-else if (FSObject.FileExists(prolog_path3)) {
-	prolog_path = prolog_path3;
-	config_file = "sicstus.config";
-}
-else {
-	WScript.Echo("Error! Cannot find spwin.exe at the expected places!");
-	WScript.Echo("Please, edit the script and update the location of the spwin.exe executable.");
-	WScript.Quit(1);
-}
-
-var WshSystemEnv = WshShell.Environment("SYSTEM");
-var WshUserEnv = WshShell.Environment("USER");
-var logtalk_home;
-
-if (WshSystemEnv.Item("LOGTALKHOME"))
-	logtalk_home = WshSystemEnv.Item("LOGTALKHOME");
-else if (WshUserEnv.Item("LOGTALKHOME"))
-	logtalk_home = WshUserEnv.Item("LOGTALKHOME")
-else {
-	WScript.Echo("Error! The environment variable LOGTALKHOME must be defined first!");
-	usage_help();
-	WScript.Quit(1);
-}
-
-if (!FSObject.FolderExists(logtalk_home)) {
-	WScript.Echo("The environment variable LOGTALKHOME points to a non-existing directory!");
-	WScript.Echo("Its current value is: %LOGTALKHOME%");
-	WScript.Echo("The variable must be set to your Logtalk installation directory!");
-	WScript.Echo("");
-	usage_help();
-	WScript.Quit(1);
-}
-
-logtalk_home = logtalk_home.replace(/\\/g, "\\\\");
-
-if (!FSObject.FolderExists(logtalk_home + "\\bin")) 
-	FSObject.CreateFolder(logtalk_home + "\\bin");
-
-var f = FSObject.CreateTextFile(logtalk_home + "\\bin\\logtalk_sicstus.pl", true);
-
-f.WriteLine(":- consult('$LOGTALKUSER/configs/" + config_file + "').");
-f.WriteLine(":- consult('$LOGTALKHOME/compiler/logtalk.pl').");
-f.WriteLine(":- consult('$LOGTALKUSER/libpaths/libpaths.pl').");
-f.Close();
-
-var ProgramsPath = WshShell.SpecialFolders("AllUsersPrograms");
-
-if (!FSObject.FolderExists(ProgramsPath + "\\Logtalk")) 
-	FSObject.CreateFolder(ProgramsPath + "\\Logtalk");
-
-var link = WshShell.CreateShortcut(ProgramsPath + "\\Logtalk\\Logtalk - SICStus Prolog.lnk");
-link.Arguments = '-l "%LOGTALKHOME%\\bin\\logtalk_sicstus.pl"';
-link.Description = 'Runs Logtalk with SICStus Prolog';
-link.IconLocation = 'app.exe,1';
-link.TargetPath = prolog_path;
-link.WindowStyle = 1;
-link.WorkingDirectory = logtalk_home;
-link.Save();
-
-WScript.Echo('Done. The "Logtalk - SICStus Prolog" shortcut was been added to');
-WScript.Echo('the Start Menu Programs. Make sure that the environment variables');
-WScript.Echo('LOGTALKHOME and LOGTALKUSER are defined for all users wishing');
-WScript.Echo('to use the shortcut.');
-WScript.Echo('');
-WScript.Echo('Users must run the batch script "cplgtdirs" once before using the');
-WScript.Echo('"Logtalk - SICStus Prolog" shortcut.');
-WScript.Echo('');
-
-WScript.Quit(0);
-
-function usage_help() {
-	WScript.Echo('');
-	WScript.Echo('This script creates a shortcut named "Logtalk - SICStus Prolog" for');
-	WScript.Echo('running Logtalk with SICStus Prolog. The script must be run by a user');
-	WScript.Echo('with administrative rights. The LOGTALKHOME environment variable must');
-	WScript.Echo('be defined before running this script.');
-	WScript.Echo('');
-	WScript.Echo('Usage:');
-	WScript.Echo('  ' + WScript.ScriptName + ' help');
-	WScript.Echo('  ' + WScript.ScriptName);
-	WScript.Echo('');
-}
diff --git a/Logtalk/scripts/make_sicstuslgt.sh b/Logtalk/scripts/make_sicstuslgt.sh
deleted file mode 100755
index 2a188f9e3..000000000
--- a/Logtalk/scripts/make_sicstuslgt.sh
+++ /dev/null
@@ -1,63 +0,0 @@
-#!/bin/sh
-
-## =================================================================
-## Logtalk - Object oriented extension to Prolog
-## Release 2.29.5
-##
-## Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-## =================================================================
-
-echo
-echo "Creating a script named sicstuslgt for running Logtalk with SICStus Prolog..."
-echo
-
-if ! [ "$LOGTALKHOME" ]
-then
-	echo "The environment variable LOGTALKHOME must be defined first!"
-	echo
-	exit 1
-fi
-
-if ! [ -d "$LOGTALKHOME" ]; then
-	echo "The environment variable LOGTALKHOME points to a non-existing directory!"
-	echo "Its current value is: $LOGTALKHOME"
-	echo "The variable must be set to your Logtalk installation directory!"
-	echo
-	exit 1
-fi
-
-if [ -z "$1" ]; then
-	prefix=/usr/local
-else
-	prefix="$1"
-fi
-
-if ! [ -d "$prefix" ]; then
-	echo "Directory prefix does not exist!"
-	echo
-	exit 1
-fi
-
-cd "$LOGTALKHOME"
-mkdir -p bin
-cd bin
-if sicstus -f --goal "halt." 2>&1 | grep "SICStus 4" 2>&1 >/dev/null; then
-	echo ":- compile('\$LOGTALKUSER/configs/sicstus4.config')." > logtalk_sicstus.pl
-	sed -e '/call_with_args/ s//call/g' ../compiler/logtalk.pl > logtalk_comp_sicstus.pl
-	echo ":- compile('\$LOGTALKHOME/bin/logtalk_comp_sicstus.pl')." >> logtalk_sicstus.pl
-else
-	echo ":- compile('\$LOGTALKUSER/configs/sicstus.config')." > logtalk_sicstus.pl
-	echo ":- compile('\$LOGTALKHOME/compiler/logtalk.pl')." >> logtalk_sicstus.pl
-fi
-echo ":- compile('\$LOGTALKUSER/libpaths/libpaths.pl')." >> logtalk_sicstus.pl
-
-echo "#/bin/sh" > sicstuslgt
-echo "sicstus -l \"\$LOGTALKHOME/bin/logtalk_sicstus.pl\" \"\$@\"" >> sicstuslgt
-chmod a+x sicstuslgt
-ln -sf $LOGTALKHOME/bin/sicstuslgt $prefix/bin/sicstuslgt
-echo "Done. A link to the script was been created in $prefix/bin."
-echo
-echo "Users should ensure that the environment variables LOGTALKHOME"
-echo "and LOGTALKUSER are defined and then run the \"cplgtdirs\" script"
-echo "once prior to using the sicstuslgt script."
-echo
diff --git a/Logtalk/scripts/make_swilgt.js b/Logtalk/scripts/make_swilgt.js
deleted file mode 100644
index 66a84a53d..000000000
--- a/Logtalk/scripts/make_swilgt.js
+++ /dev/null
@@ -1,118 +0,0 @@
-// =================================================================
-// Logtalk - Object oriented extension to Prolog
-// Release 2.29.5
-//
-// Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-// =================================================================
-
-if (WScript.Arguments.Unnamed.Length > 0) {
-	usage_help();
-	WScript.Quit(0);
-}
-
-WScript.Echo('');
-WScript.Echo('Creating a shortcut named "Logtalk - SWI-Prolog" for running Logtalk');
-WScript.Echo('with SWI-Prolog...');
-WScript.Echo('');
-
-var WshShell = new ActiveXObject("WScript.Shell");
-
-var prolog_path = WshShell.RegRead("HKLM\\Software\\SWI\\Prolog\\home") + "\\bin\\plwin.exe";
-
-var FSObject = new ActiveXObject("Scripting.FileSystemObject");
-
-if (!FSObject.FileExists(prolog_path)) {
-	WScript.Echo("Error! Cannot find plwin.exe at the expected place!");
-	WScript.Echo("Please, edit the script and update the location of the plwin.exe executable.");
-	WScript.Quit(1);
-}
-
-var WshSystemEnv = WshShell.Environment("SYSTEM");
-var WshUserEnv = WshShell.Environment("USER");
-var logtalk_home;
-
-if (WshSystemEnv.Item("LOGTALKHOME"))
-	logtalk_home = WshSystemEnv.Item("LOGTALKHOME");
-else if (WshUserEnv.Item("LOGTALKHOME"))
-	logtalk_home = WshUserEnv.Item("LOGTALKHOME")
-else {
-	WScript.Echo("Error! The environment variable LOGTALKHOME must be defined first!");
-	usage_help();
-	WScript.Quit(1);
-}
-
-if (!FSObject.FolderExists(logtalk_home)) {
-	WScript.Echo("The environment variable LOGTALKHOME points to a non-existing directory!");
-	WScript.Echo("Its current value is: %LOGTALKHOME%");
-	WScript.Echo("The variable must be set to your Logtalk installation directory!");
-	WScript.Echo("");
-	usage_help();
-	WScript.Quit(1);
-}
-
-logtalk_home = logtalk_home.replace(/\\/g, "\\\\");
-
-if (!FSObject.FolderExists(logtalk_home + "\\bin"))
-	FSObject.CreateFolder(logtalk_home + "\\bin");
-
-var f1 = FSObject.CreateTextFile(logtalk_home + "\\bin\\logtalk_comp_swi.pl", true);
-var f2 = FSObject.OpenTextFile(logtalk_home + "\\compiler\\logtalk.pl", 1);
-var line;
-
-f1.WriteLine(":- set_prolog_flag(iso, true).");
-f1.WriteLine(":- set_prolog_flag(generate_debug_info, false).");
-f1.WriteLine(":- system_module.");
-while (!f2.AtEndOfStream) {
-	line = f2.ReadLine();
-	f1.WriteLine(line);
-}
-
-f1.Close();
-f2.Close();
-
-f = FSObject.CreateTextFile(logtalk_home + "\\bin\\logtalk_swi.init", true);
-
-f.WriteLine(":- consult('$LOGTALKUSER/configs/swi.config').");
-f.WriteLine(":- consult('$LOGTALKHOME/bin/logtalk_comp_swi.pl').");
-f.WriteLine(":- consult('$LOGTALKUSER/libpaths/libpaths.pl').");
-f.WriteLine(":- consult('$LOGTALKUSER/configs/swihook.pl').");
-f.WriteLine(":- consult('$LOGTALKUSER/configs/xpcehook.pl').");
-f.Close();
-
-var ProgramsPath = WshShell.SpecialFolders("AllUsersPrograms");
-
-if (!FSObject.FolderExists(ProgramsPath + "\\Logtalk")) 
-	FSObject.CreateFolder(ProgramsPath + "\\Logtalk");
-
-var link = WshShell.CreateShortcut(ProgramsPath + "\\Logtalk\\Logtalk - SWI-Prolog.lnk");
-link.Arguments = '-f "%LOGTALKHOME%\\bin\\logtalk_swi.init"';
-link.Description = 'Runs Logtalk with SWI-Prolog';
-link.IconLocation = 'app.exe,1';
-link.TargetPath = prolog_path;
-link.WindowStyle = 1;
-link.WorkingDirectory = logtalk_home;
-link.Save();
-
-WScript.Echo('Done. The "Logtalk - SWI-Prolog" shortcut was been added to the');
-WScript.Echo('Start Menu Programs. Make sure that the environment variables');
-WScript.Echo('LOGTALKHOME and LOGTALKUSER are defined for all users wishing');
-WScript.Echo('to use the shortcut.');
-WScript.Echo('');
-WScript.Echo('Users must run the batch script "cplgtdirs" once before using');
-WScript.Echo('the "Logtalk -  SWI-Prolog" shortcut.');
-WScript.Echo('');
-
-WScript.Quit(0);
-
-function usage_help() {
-	WScript.Echo('');
-	WScript.Echo('This script creates a shortcut named "Logtalk - SWI-Prolog" for');
-	WScript.Echo('running Logtalk with SWI-Prolog. The script must be run by a user');
-	WScript.Echo('with administrative rights. The LOGTALKHOME environment variable');
-	WScript.Echo('must be defined before running this script.');
-	WScript.Echo('');
-	WScript.Echo('Usage:');
-	WScript.Echo('  ' + WScript.ScriptName + ' help');
-	WScript.Echo('  ' + WScript.ScriptName);
-	WScript.Echo('');
-}
diff --git a/Logtalk/scripts/make_swilgt.sh b/Logtalk/scripts/make_swilgt.sh
deleted file mode 100755
index 43d448c9a..000000000
--- a/Logtalk/scripts/make_swilgt.sh
+++ /dev/null
@@ -1,65 +0,0 @@
-#!/bin/sh
-
-## =================================================================
-## Logtalk - Object oriented extension to Prolog
-## Release 2.29.5
-##
-## Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-## =================================================================
-
-echo
-echo "Creating a script named swilgt for running Logtalk with SWI-Prolog..."
-echo
-
-if ! [ "$LOGTALKHOME" ]
-then
-	echo "The environment variable LOGTALKHOME must be defined first!"
-	echo
-	exit 1
-fi
-
-if ! [ -d "$LOGTALKHOME" ]; then
-	echo "The environment variable LOGTALKHOME points to a non-existing directory!"
-	echo "Its current value is: $LOGTALKHOME"
-	echo "The variable must be set to your Logtalk installation directory!"
-	echo
-	exit 1
-fi
-
-if [ -z "$1" ]; then
-	prefix=/usr/local
-else
-	prefix="$1"
-fi
-
-if ! [ -d "$prefix" ]; then
-	echo "Directory prefix does not exist!"
-	echo
-	exit 1
-fi
-
-cd "$LOGTALKHOME"
-mkdir -p bin
-cd bin
-echo ":- set_prolog_flag(iso, true)." > logtalk_comp_swi.pl
-echo ":- set_prolog_flag(generate_debug_info, false)." >> logtalk_comp_swi.pl
-echo ":- system_module." >> logtalk_comp_swi.pl
-cat ../compiler/logtalk.pl >> logtalk_comp_swi.pl
-echo ":- consult('\$LOGTALKUSER/configs/swi.config')." > logtalk_swi.pl
-echo ":- consult('\$LOGTALKHOME/bin/logtalk_comp_swi.pl')." >> logtalk_swi.pl
-echo ":- consult('\$LOGTALKUSER/libpaths/libpaths.pl')." >> logtalk_swi.pl
-echo ":- consult('\$LOGTALKUSER/configs/swihook.pl')." >> logtalk_swi.pl
-echo ":- consult('\$LOGTALKUSER/configs/xpcehook.pl')." >> logtalk_swi.pl
-echo "#/bin/sh" > swilgt
-case $( uname -s ) in
-	Darwin	) echo "swipl -f \"\$LOGTALKHOME/bin/logtalk_swi.pl\" \"\$@\"" >> swilgt;;
-	*		) echo "pl -f \"\$LOGTALKHOME/bin/logtalk_swi.pl\" \"\$@\"" >> swilgt;;
-esac
-chmod a+x swilgt
-ln -sf $LOGTALKHOME/bin/swilgt $prefix/bin/swilgt
-echo "Done. A link to the script was been created in $prefix/bin."
-echo
-echo "Users should ensure that the environment variables LOGTALKHOME"
-echo "and LOGTALKUSER are defined and then run the \"cplgtdirs\" script"
-echo "once prior to using the swilgt script."
-echo
diff --git a/Logtalk/scripts/make_xsbcvslgt.js b/Logtalk/scripts/make_xsbcvslgt.js
deleted file mode 100644
index b3ed86c7a..000000000
--- a/Logtalk/scripts/make_xsbcvslgt.js
+++ /dev/null
@@ -1,108 +0,0 @@
-// =================================================================
-// Logtalk - Object oriented extension to Prolog
-// Release 2.27.1
-//
-// Copyright (c) 1998-2006 Paulo Moura.  All Rights Reserved.
-// =================================================================
-
-var prolog_path = "C:\\Program Files\\XSB\\bin\\xsb.exe";
-
-if (WScript.Arguments.Unnamed.Length > 0) {
-	usage_help();
-	WScript.Quit(0);
-}
-
-WScript.Echo('');
-WScript.Echo('Creating a shortcut named "Logtalk - XSB CVS" for running Logtalk');
-WScript.Echo('with XSB...');
-WScript.Echo('');
-
-var FSObject = new ActiveXObject("Scripting.FileSystemObject");
-
-if (!FSObject.FileExists(prolog_path)) {
-	WScript.Echo("Error! Cannot find xsb.exe at the expected place!");
-	WScript.Echo("Please edit the script and update the location of the xsb.exe executable.");
-	WScript.Quit(1);
-}
-
-var WshShell = new ActiveXObject("WScript.Shell");
-
-var WshSystemEnv = WshShell.Environment("SYSTEM");
-var WshUserEnv = WshShell.Environment("USER");
-var logtalk_home;
-
-if (WshSystemEnv.Item("LOGTALKHOME"))
-	logtalk_home = WshSystemEnv.Item("LOGTALKHOME");
-else if (WshUserEnv.Item("LOGTALKHOME"))
-	logtalk_home = WshUserEnv.Item("LOGTALKHOME")
-else {
-	WScript.Echo("Error! The environment variable LOGTALKHOME must be defined first!");
-	usage_help();
-	WScript.Quit(1);
-}
-
-if (!FSObject.FolderExists(logtalk_home)) {
-	WScript.Echo("The environment variable LOGTALKHOME points to a non-existing directory!");
-	WScript.Echo("Its current value is: %LOGTALKHOME%");
-	WScript.Echo("The variable must be set to your Logtalk installation directory!");
-	WScript.Echo("");
-	usage_help();
-	WScript.Quit(1);
-}
-
-logtalk_home = logtalk_home.replace(/\\/g, "\\\\");
-
-if (!FSObject.FolderExists(logtalk_home + "\\bin")) 
-	FSObject.CreateFolder(logtalk_home + "\\bin");
-
-FSObject.CopyFile(logtalk_home + "\\compiler\\logtalk.pl", logtalk_home + "\\bin\\logtalkcvs.P");
-
-var f = FSObject.CreateTextFile(logtalk_home + "\\bin\\logtalk_xsbcvs.P", true);
-
-f.WriteLine(":- reconsult('$LOGTALKUSER\\\\configs\\\\xsbcvs.P').");
-f.WriteLine(":- reconsult('$LOGTALKHOME\\\\bin\\\\logtalk.P').");
-f.WriteLine(":- reconsult('$LOGTALKUSER\\\\libpaths\\\\libpaths.P').");
-f.Close();
-
-var ProgramsPath = WshShell.SpecialFolders("AllUsersPrograms");
-
-if (!FSObject.FolderExists(ProgramsPath + "\\Logtalk")) 
-	FSObject.CreateFolder(ProgramsPath + "\\Logtalk");
-
-var link = WshShell.CreateShortcut(ProgramsPath + "\\Logtalk\\Logtalk - XSB CVS.lnk");
-link.Arguments = "-l %LOGTALKHOME%\\bin\\logtalk_xsbcvs.P";
-link.Description = "Runs Logtalk with XSB CVS";
-link.IconLocation = "app.exe,1";
-link.TargetPath = prolog_path;
-link.WindowStyle = 1;
-link.WorkingDirectory = logtalk_home;
-link.Save();
-
-WScript.Echo('Done. The "Logtalk - XSB CVS" shortcut was been added to the Start Menu');
-WScript.Echo('Programs.  Make sure that the environment variables LOGTALKHOME and');
-WScript.Echo('LOGTALKUSER are defined for all users wishing to use the shortcut.');
-WScript.Echo('');
-WScript.Echo('The first call to the shortcut must be made by a user with');
-WScript.Echo('administrative rights.');
-WScript.Echo('');
-WScript.Echo('Users must run the batch script "cplgtdirs" before using the');
-WScript.Echo('"Logtalk - XSB CVS" shortcut. Users must edit the contents of');
-WScript.Echo('the "libpaths.P" file on the "libpaths" directory in order to');
-WScript.Echo('replace all occurrences of the LOGTALKUSER environment variable');
-WScript.Echo('by its value.');
-WScript.Echo('');
-
-WScript.Quit(0);
-
-function usage_help() {
-	WScript.Echo('');
-	WScript.Echo('This script creates a shortcut named "Logtalk - XSB CVS" for running Logtalk');
-	WScript.Echo('with XSB. The script must be run by a user with administrative rights.');
-	WScript.Echo('The LOGTALKHOME environment variable must be defined before running this');
-	WScript.Echo('script.');
-	WScript.Echo('');
-	WScript.Echo('Usage:');
-	WScript.Echo('  ' + WScript.ScriptName + ' help');
-	WScript.Echo('  ' + WScript.ScriptName);
-	WScript.Echo('');
-}
diff --git a/Logtalk/scripts/make_xsbcvslgt.sh b/Logtalk/scripts/make_xsbcvslgt.sh
deleted file mode 100755
index 5702f9316..000000000
--- a/Logtalk/scripts/make_xsbcvslgt.sh
+++ /dev/null
@@ -1,58 +0,0 @@
-#!/bin/sh
-
-## =================================================================
-## Logtalk - Object oriented extension to Prolog
-## Release 2.27.1
-##
-## Copyright (c) 1998-2006 Paulo Moura.  All Rights Reserved.
-## =================================================================
-
-echo
-echo "Creating a script named xsbcvslgt for running Logtalk with XSB..."
-echo
-
-if ! [ "$LOGTALKHOME" ]
-then
-	echo "The environment variable LOGTALKHOME must be defined first!"
-	echo
-	exit 1
-fi
-
-if ! [ -d "$LOGTALKHOME" ]; then
-	echo "The environment variable LOGTALKHOME points to a non-existing directory!"
-	echo "Its current value is: $LOGTALKHOME"
-	echo "The variable must be set to your Logtalk installation directory!"
-	echo
-	exit 1
-fi
-
-if [ -z "$1" ]; then
-	prefix=/usr/local
-else
-	prefix="$1"
-fi
-
-if ! [ -d "$prefix" ]; then
-	echo "Directory prefix does not exist!"
-	echo
-	exit 1
-fi
-
-cd "$LOGTALKHOME"
-mkdir -p bin
-cd bin
-cp ../compiler/logtalk.pl logtalkcvs.P
-echo ":- reconsult('$LOGTALKUSER/configs/xsbcvs.P')." > logtalkxsbcvs.P
-echo ":- reconsult('$LOGTALKHOME/bin/logtalkcvs.P')." >> logtalkxsbcvs.P
-echo ":- reconsult('$LOGTALKUSER/libpaths/libpaths.P')." >> logtalkxsbcvs.P
-echo "#/bin/sh" > xsbcvslgt
-echo "xsb -e \"reconsult('\$LOGTALKHOME/bin/logtalkxsbcvs.P').\"" >> xsbcvslgt
-chmod a+x xsbcvslgt
-ln -sf $LOGTALKHOME/bin/xsbcvslgt $prefix/bin/xsbcvslgt
-echo "Done. A link to the script was been created in $prefix/bin."
-echo "Users must define the environment variables LOGTALKHOME and"
-echo "LOGTALKUSER in order to use the script. Users must run the"
-echo "the cplgtdirs script before using the xsbcvslgt script."
-echo
-echo "The first call to the script must be made as root or using sudo."
-echo
diff --git a/Logtalk/scripts/make_xsblgt.js b/Logtalk/scripts/make_xsblgt.js
deleted file mode 100644
index 5fe08fee5..000000000
--- a/Logtalk/scripts/make_xsblgt.js
+++ /dev/null
@@ -1,111 +0,0 @@
-// =================================================================
-// Logtalk - Object oriented extension to Prolog
-// Release 2.29.5
-//
-// Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-// =================================================================
-
-if (ScriptEngineMajorVersion() < 5 || ScriptEngineMajorVersion() == 5 && ScriptEngineMinorVersion() < 6) {
-	WScript.Echo('Error! WSH 5.6 or later version needed for running this script.');
-	WScript.Quit(1);
-}
-
-var prolog_path = "C:\\XSB\\config\\x86-pc-windows\\bin\\xsb.exe";
-
-if (WScript.Arguments.Unnamed.Length > 0) {
-	usage_help();
-	WScript.Quit(0);
-}
-
-WScript.Echo('');
-WScript.Echo('Creating a shortcut named "Logtalk - XSB" for running Logtalk');
-WScript.Echo('with XSB...');
-WScript.Echo('');
-
-var FSObject = new ActiveXObject("Scripting.FileSystemObject");
-
-if (!FSObject.FileExists(prolog_path)) {
-	WScript.Echo("Error! Cannot find xsb.exe at the expected place!");
-	WScript.Echo("Please edit the script and update the location of the xsb.exe executable.");
-	WScript.Quit(1);
-}
-
-var WshShell = new ActiveXObject("WScript.Shell");
-
-var WshSystemEnv = WshShell.Environment("SYSTEM");
-var WshUserEnv = WshShell.Environment("USER");
-var logtalk_home;
-
-if (WshSystemEnv.Item("LOGTALKHOME"))
-	logtalk_home = WshSystemEnv.Item("LOGTALKHOME");
-else if (WshUserEnv.Item("LOGTALKHOME"))
-	logtalk_home = WshUserEnv.Item("LOGTALKHOME")
-else {
-	WScript.Echo("Error! The environment variable LOGTALKHOME must be defined first!");
-	usage_help();
-	WScript.Quit(1);
-}
-
-if (!FSObject.FolderExists(logtalk_home)) {
-	WScript.Echo("The environment variable LOGTALKHOME points to a non-existing directory!");
-	WScript.Echo("Its current value is: %LOGTALKHOME%");
-	WScript.Echo("The variable must be set to your Logtalk installation directory!");
-	WScript.Echo("");
-	usage_help();
-	WScript.Quit(1);
-}
-
-logtalk_home = logtalk_home.replace(/\\/g, "\\\\");
-
-if (!FSObject.FolderExists(logtalk_home + "\\bin")) 
-	FSObject.CreateFolder(logtalk_home + "\\bin");
-
-var f = FSObject.CreateTextFile(logtalk_home + "\\bin\\logtalk_xsb.pl", true);
-
-f.WriteLine(":- expand_filename('configs/xsb.pl', Path), reconsult(Path).");
-f.WriteLine(":- reconsult('" + logtalk_home + "\\\\compiler\\\\logtalk.pl').");
-f.WriteLine(":- expand_filename('libpaths/libpaths_no_env_var.pl', Path), reconsult(Path).");
-f.Close();
-
-var ProgramsPath = WshShell.SpecialFolders("AllUsersPrograms");
-
-if (!FSObject.FolderExists(ProgramsPath + "\\Logtalk")) 
-	FSObject.CreateFolder(ProgramsPath + "\\Logtalk");
-
-var link = WshShell.CreateShortcut(ProgramsPath + "\\Logtalk\\Logtalk - XSB.lnk");
-link.Arguments = "-l -e \"reconsult('%LOGTALKHOME%\\\\bin\\\\logtalk_xsb.pl').\"";
-link.Description = "Runs Logtalk with XSB";
-link.IconLocation = "app.exe,1";
-link.TargetPath = prolog_path;
-link.WindowStyle = 1;
-link.WorkingDirectory = "%LOGTALKUSER%";
-link.Save();
-
-WScript.Echo('Done. The "Logtalk - XSB" shortcut was been added to the Start Menu');
-WScript.Echo('Programs.  Make sure that the environment variables LOGTALKHOME and');
-WScript.Echo('LOGTALKUSER are defined for all users wishing to use the shortcut.');
-WScript.Echo('');
-WScript.Echo('The first call to the shortcut must be made by a user with');
-WScript.Echo('administrative rights.');
-WScript.Echo('');
-WScript.Echo('Users must run the batch script "cplgtdirs" once before using the');
-WScript.Echo('"Logtalk - XSB" shortcut. Users must edit the contents of the');
-WScript.Echo('"libpaths_no_env_var.pl" file on the "libpaths" directory in order');
-WScript.Echo('to replace all occurrences of the LOGTALKUSER environment variable');
-WScript.Echo('by its value.');
-WScript.Echo('');
-
-WScript.Quit(0);
-
-function usage_help() {
-	WScript.Echo('');
-	WScript.Echo('This script creates a shortcut named "Logtalk - XSB" for running Logtalk');
-	WScript.Echo('with XSB. The script must be run by a user with administrative rights.');
-	WScript.Echo('The LOGTALKHOME environment variable must be defined before running this');
-	WScript.Echo('script.');
-	WScript.Echo('');
-	WScript.Echo('Usage:');
-	WScript.Echo('  ' + WScript.ScriptName + ' help');
-	WScript.Echo('  ' + WScript.ScriptName);
-	WScript.Echo('');
-}
diff --git a/Logtalk/scripts/make_xsblgt.sh b/Logtalk/scripts/make_xsblgt.sh
deleted file mode 100755
index 44cf1273c..000000000
--- a/Logtalk/scripts/make_xsblgt.sh
+++ /dev/null
@@ -1,60 +0,0 @@
-#!/bin/sh
-
-## =================================================================
-## Logtalk - Object oriented extension to Prolog
-## Release 2.29.5
-##
-## Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-## =================================================================
-
-echo
-echo "Creating a script named xsblgt for running Logtalk with XSB..."
-echo
-
-if ! [ "$LOGTALKHOME" ]
-then
-	echo "The environment variable LOGTALKHOME must be defined first!"
-	echo
-	exit 1
-fi
-
-if ! [ -d "$LOGTALKHOME" ]; then
-	echo "The environment variable LOGTALKHOME points to a non-existing directory!"
-	echo "Its current value is: $LOGTALKHOME"
-	echo "The variable must be set to your Logtalk installation directory!"
-	echo
-	exit 1
-fi
-
-if [ -z "$1" ]; then
-	prefix=/usr/local
-else
-	prefix="$1"
-fi
-
-if ! [ -d "$prefix" ]; then
-	echo "Directory prefix does not exist!"
-	echo
-	exit 1
-fi
-
-cd "$LOGTALKHOME"
-mkdir -p bin
-cd bin
-echo ":- reconsult('~/logtalk/configs/xsb.pl')." > logtalk_xsb.pl
-echo ":- reconsult('compiler/logtalk.pl')." >> logtalk_xsb.pl
-echo ":- reconsult('~/logtalk/libpaths/libpaths_no_env_var.pl')." >> logtalk_xsb.pl
-echo ":- path_sysop(chdir, '~')." >> logtalk_xsb.pl
-echo "#/bin/sh" > xsblgt
-echo "cd \$LOGTALKHOME" >> xsblgt
-echo "xsb -l -e \"reconsult('bin/logtalk_xsb.pl').\" \"\$@\"" >> xsblgt
-chmod a+x xsblgt
-ln -sf $LOGTALKHOME/bin/xsblgt $prefix/bin/xsblgt
-echo "Done. A link to the script was been created in $prefix/bin."
-echo "The first call to the script the must be made as root or using"
-echo "sudo."
-echo
-echo "Users should ensure that the environment variables LOGTALKHOME"
-echo "and LOGTALKUSER are defined and then run the \"cplgtdirs\" script"
-echo "once prior to using the xsblgt script."
-echo
diff --git a/Logtalk/scripts/make_yaplgt.js b/Logtalk/scripts/make_yaplgt.js
deleted file mode 100644
index 2be4e1dea..000000000
--- a/Logtalk/scripts/make_yaplgt.js
+++ /dev/null
@@ -1,105 +0,0 @@
-// =================================================================
-// Logtalk - Object oriented extension to Prolog
-// Release 2.29.5
-//
-// Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-// =================================================================
-
-if (ScriptEngineMajorVersion() < 5 || ScriptEngineMajorVersion() == 5 && ScriptEngineMinorVersion() < 6) {
-	WScript.Echo('Error! WSH 5.6 or later version needed for running this script.');
-	WScript.Quit(1);
-}
-
-var prolog_path = "C:\\Yap\\bin\\yap.exe";
-
-if (WScript.Arguments.Unnamed.Length > 0) {
-	usage_help();
-	WScript.Quit(0);
-}
-
-WScript.Echo('');
-WScript.Echo('Creating a shortcut named "Logtalk - YAP" for running Logtalk');
-WScript.Echo('with YAP...');
-WScript.Echo('');
-
-var FSObject = new ActiveXObject("Scripting.FileSystemObject");
-
-if (!FSObject.FileExists(prolog_path)) {
-	WScript.Echo("Error! Cannot find yap.exe at the expected place!");
-	WScript.Echo("Please edit the script and update the location of the yap.exe executable.");
-	WScript.Quit(1);
-}
-
-var WshShell = new ActiveXObject("WScript.Shell");
-
-var WshSystemEnv = WshShell.Environment("SYSTEM");
-var WshUserEnv = WshShell.Environment("USER");
-var logtalk_home;
-
-if (WshSystemEnv.Item("LOGTALKHOME"))
-	logtalk_home = WshSystemEnv.Item("LOGTALKHOME");
-else if (WshUserEnv.Item("LOGTALKHOME"))
-	logtalk_home = WshUserEnv.Item("LOGTALKHOME")
-else {
-	WScript.Echo("Error! The environment variable LOGTALKHOME must be defined first!");
-	usage_help();
-	WScript.Quit(1);
-}
-
-if (!FSObject.FolderExists(logtalk_home)) {
-	WScript.Echo("The environment variable LOGTALKHOME points to a non-existing directory!");
-	WScript.Echo("Its current value is: %LOGTALKHOME%");
-	WScript.Echo("The variable must be set to your Logtalk installation directory!");
-	WScript.Echo("");
-	usage_help();
-	WScript.Quit(1);
-}
-
-logtalk_home = logtalk_home.replace(/\\/g, "\\\\");
-
-if (!FSObject.FolderExists(logtalk_home + "\\bin")) 
-	FSObject.CreateFolder(logtalk_home + "\\bin");
-
-var f = FSObject.CreateTextFile(logtalk_home + "\\bin\\logtalk_yap.pl", true);
-
-f.WriteLine(":- reconsult('$LOGTALKUSER\\\\configs\\\\yap.config').");
-f.WriteLine(":- reconsult('$LOGTALKHOME\\\\compiler\\\\logtalk.pl').");
-f.WriteLine(":- reconsult('$LOGTALKUSER\\\\libpaths\\\\libpaths.pl').");
-f.Close();
-
-var ProgramsPath = WshShell.SpecialFolders("AllUsersPrograms");
-
-if (!FSObject.FolderExists(ProgramsPath + "\\Logtalk")) 
-	FSObject.CreateFolder(ProgramsPath + "\\Logtalk");
-
-var link = WshShell.CreateShortcut(ProgramsPath + "\\Logtalk\\Logtalk - YAP.lnk");
-link.Arguments = '-l "%LOGTALKHOME%\\bin\\logtalk_yap.pl"';
-link.Description = 'Runs Logtalk with YAP';
-link.IconLocation = 'app.exe,1';
-link.TargetPath = prolog_path;
-link.WindowStyle = 1;
-link.WorkingDirectory = logtalk_home;
-link.Save();
-
-WScript.Echo('Done. The "Logtalk - YAP" shortcut was been added to the Start Menu');
-WScript.Echo('Programs. Make sure that the environment variables LOGTALKHOME and');
-WScript.Echo('LOGTALKUSER are defined for all users wishing to use the shortcut.');
-WScript.Echo('');
-WScript.Echo('Users must run the batch script "cplgtdirs" once before using the');
-WScript.Echo('"Logtalk - YAP" shortcut.');
-WScript.Echo('');
-
-WScript.Quit(0);
-
-function usage_help() {
-	WScript.Echo('');
-	WScript.Echo('This script creates a shortcut named "Logtalk - YAP" for running Logtalk');
-	WScript.Echo('with YAP. The script must be run by a user with administrative rights.');
-	WScript.Echo('The LOGTALKHOME environment variable must be defined before running this');
-	WScript.Echo('script.');
-	WScript.Echo('');
-	WScript.Echo('Usage:');
-	WScript.Echo('  ' + WScript.ScriptName + ' help');
-	WScript.Echo('  ' + WScript.ScriptName);
-	WScript.Echo('');
-}
diff --git a/Logtalk/scripts/make_yaplgt.sh b/Logtalk/scripts/make_yaplgt.sh
deleted file mode 100755
index 4f1829a60..000000000
--- a/Logtalk/scripts/make_yaplgt.sh
+++ /dev/null
@@ -1,57 +0,0 @@
-#!/bin/sh
-
-## =================================================================
-## Logtalk - Object oriented extension to Prolog
-## Release 2.29.5
-##
-## Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-## =================================================================
-
-echo
-echo "Creating a script named yaplgt for running Logtalk with YAP..."
-echo
-
-if ! [ "$LOGTALKHOME" ]
-then
-	echo "The environment variable LOGTALKHOME must be defined first!"
-	echo
-	exit 1
-fi
-
-if ! [ -d "$LOGTALKHOME" ]; then
-	echo "The environment variable LOGTALKHOME points to a non-existing directory!"
-	echo "Its current value is: $LOGTALKHOME"
-	echo "The variable must be set to your Logtalk installation directory!"
-	echo
-	exit 1
-fi
-
-if [ -z "$1" ]; then
-	prefix=/usr/local
-else
-	prefix="$1"
-fi
-
-if ! [ -d "$prefix" ]; then
-	echo "Directory prefix does not exist!"
-	echo
-	exit 1
-fi
-
-cd "$LOGTALKHOME"
-mkdir -p bin
-cd bin
-echo ":- reconsult('\$LOGTALKUSER/configs/yap.config')." > logtalk_yap.pl
-echo ":- reconsult('\$LOGTALKHOME/compiler/logtalk.pl')." >> logtalk_yap.pl
-echo ":- reconsult('\$LOGTALKUSER/libpaths/libpaths.pl')." >> logtalk_yap.pl
-
-echo "#/bin/sh" > yaplgt
-echo "yap -s 49152 -h 16384 -t 1024 -l \"\$LOGTALKHOME/bin/logtalk_yap.pl\" \"\$@\"" >> yaplgt
-chmod a+x yaplgt
-ln -sf $LOGTALKHOME/bin/yaplgt $prefix/bin/yaplgt
-echo "Done. A link to the script was been created in $prefix/bin."
-echo
-echo "Users should ensure that the environment variables LOGTALKHOME"
-echo "and LOGTALKUSER are defined and then run the \"cplgtdirs\" script"
-echo "once prior to using the yaplgt script."
-echo
diff --git a/Logtalk/scripts/makeall_lgt.js b/Logtalk/scripts/makeall_lgt.js
deleted file mode 100644
index 8d663aa88..000000000
--- a/Logtalk/scripts/makeall_lgt.js
+++ /dev/null
@@ -1,83 +0,0 @@
-// =================================================================
-// Logtalk - Object oriented extension to Prolog
-// Release 2.29.5
-//
-// Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-// =================================================================
-
-if (ScriptEngineMajorVersion() < 5 || ScriptEngineMajorVersion() == 5 && ScriptEngineMinorVersion() < 6) {
-	WScript.Echo('Error! WSH 5.6 or later version needed for running this script.');
-	WScript.Quit(1);
-}
-
-WScript.Echo('');
-WScript.Echo('Creating shortcuts for running Logtalk with selected Prolog compilers...');
-WScript.Echo('');
-
-var WshShell = new ActiveXObject("WScript.Shell");
-var WshSystemEnv = WshShell.Environment("SYSTEM");
-var WshUserEnv = WshShell.Environment("USER");
-
-if (WshSystemEnv.Item("LOGTALKHOME"))
-	logtalk_home = WshSystemEnv.Item("LOGTALKHOME");
-else if (WshUserEnv.Item("LOGTALKHOME"))
-	logtalk_home = WshUserEnv.Item("LOGTALKHOME")
-else {
-	WScript.Echo("Error! The environment variable LOGTALKHOME must be defined first!");
-	usage_help();
-	WScript.Quit(1);
-}
-
-var FSObject = new ActiveXObject("Scripting.FileSystemObject");
-
-if (!FSObject.FolderExists(logtalk_home)) {
-	WScript.Echo("The environment variable LOGTALKHOME points to a non-existing directory!");
-	WScript.Echo("Its current value is: %LOGTALKHOME%");
-	WScript.Echo("The variable must be set to your Logtalk installation directory!");
-	WScript.Echo("");
-	usage_help();
-	WScript.Quit(1);
-}
-
-WScript.Echo('Creating shortcut Logtalk - B-Prolog...');
-WshShell.Run("cscript %LOGTALKHOME%\\scripts\\make_bplgt.js", true);
-
-WScript.Echo('Creating shortcut Logtalk - CIAO...');
-WshShell.Run("cscript %LOGTALKHOME%\\scripts\\make_ciaolgt.js", true);
-	
-WScript.Echo('Creating shortcut Logtalk - ECLiPSe...');
-WshShell.Run("cscript %LOGTALKHOME%\\scripts\\make_eclipselgt.js", true);
-
-WScript.Echo('Creating shortcut Logtalk - GNU Prolog...');
-WshShell.Run("cscript %LOGTALKHOME%\\scripts\\make_gplgt.js", true);
-
-WScript.Echo('Creating shortcut Logtalk - K-Prolog...');
-WshShell.Run("cscript %LOGTALKHOME%\\scripts\\make_plclgt.js", true);
-
-WScript.Echo('Creating shortcut Logtalk - SICStus...');
-WshShell.Run("cscript %LOGTALKHOME%\\scripts\\make_sicstuslgt.js", true);
-
-WScript.Echo('Creating shortcut Logtalk - SWI-Prolog...');
-WshShell.Run("cscript %LOGTALKHOME%\\scripts\\make_swilgt.js", true);
-
-WScript.Echo('Creating shortcut Logtalk - XSB...');
-WshShell.Run("cscript %LOGTALKHOME%\\scripts\\make_xsblgt.js", true);
-
-WScript.Echo('Creating shortcut Logtalk - YAP...');
-WshShell.Run("cscript %LOGTALKHOME%\\scripts\\make_yaplgt.js", true);
-
-WScript.Echo('');
-WScript.Echo('Done. Links to the created shortcuts are availasble from the Start Menu');
-WScript.Echo('Logtalk program group. Ensure that the environment variables LOGTALKHOME');
-WScript.Echo('and LOGTALKUSER are defined for all users wishing to use the shortcuts.');
-WScript.Echo('');
-WScript.Echo('Users must run the batch script "cplgtdirs" once prior to using the');
-WScript.Echo('Logtalk - Prolog integration scripts.');
-WScript.Echo('');
-WScript.Echo('If you get an unexpected failure when creating or using a shortcut for');
-WScript.Echo('one of the above Prolog compilers, make sure that the Prolog compiler');
-WScript.Echo('is properly installed, consult the NOTES file on the scripts directory,');
-WScript.Echo('and try to run the corresponding script individually.');
-WScript.Echo('');
-
-WScript.Quit(0);
diff --git a/Logtalk/scripts/makeall_lgt.sh b/Logtalk/scripts/makeall_lgt.sh
deleted file mode 100755
index 594a35bc0..000000000
--- a/Logtalk/scripts/makeall_lgt.sh
+++ /dev/null
@@ -1,124 +0,0 @@
-#!/bin/sh
-
-## =================================================================
-## Logtalk - Object oriented extension to Prolog
-## Release 2.29.5
-##
-## Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-## =================================================================
-
-echo
-echo "Creating scripts for running Logtalk with selected Prolog compilers..."
-echo
-
-if ! [ "$LOGTALKHOME" ]
-then
-	echo "The environment variable LOGTALKHOME must be defined first!"
-	echo
-	exit 1
-fi
-
-if ! [ -d "$LOGTALKHOME" ]; then
-	echo "The environment variable LOGTALKHOME points to a non-existing directory!"
-	echo "Its current value is: $LOGTALKHOME"
-	echo "The variable must be set to your Logtalk installation directory!"
-	echo
-	exit 1
-fi
-
-if [ -z "$1" ]; then
-	prefix=/usr/local
-else
-	prefix="$1"
-fi
-
-if ! [ -d "$prefix" ]; then
-	echo "Directory prefix does not exist!"
-	echo
-	exit 1
-fi
-
-./make_bplgt.sh $prefix > /dev/null 2> /dev/null
-if [ $? = 0 ] ; then
-	echo "bplgt script created      (B-Prolog integration script)"
-else
-	echo "bplgt script creation failed      (B-Prolog integration script)"
-fi
-
-./make_ciaolgt.sh $prefix > /dev/null 2> /dev/null
-if [ $? = 0 ] ; then
-	echo "ciaolgt script created    (Ciao Prolog integration script)"
-else
-	echo "ciaolgt script creation failed    (Ciao Prolog integration script)"
-fi
-
-./make_eclipselgt.sh $prefix > /dev/null 2> /dev/null
-if [ $? = 0 ] ; then
-	echo "eclipselgt script created (ECLiPSe integration script)"
-else
-	echo "eclipselgt script creation failed (ECLiPSe integration script)"
-fi
-
-./make_gplgt.sh $prefix > /dev/null 2> /dev/null
-if [ $? = 0 ] ; then
-	echo "gplgt script created      (GNU Prolog integration script)"
-else
-	echo "gplgt script creation failed      (GNU Prolog integration script)"
-fi
-
-./make_plclgt.sh $prefix > /dev/null 2> /dev/null
-if [ $? = 0 ] ; then
-	echo "plclgt script created     (K-Prolog integration script)"
-else
-	echo "plclgt script creation failed     (K-Prolog integration script)"
-fi
-
-./make_qplgt.sh $prefix > /dev/null 2> /dev/null
-if [ $? = 0 ] ; then
-	echo "qplgt script created      (Qu-Prolog integration script)"
-else
-	echo "qplgt script creation failed      (Qu-Prolog integration script)"
-fi
-
-./make_sicstuslgt.sh $prefix > /dev/null 2> /dev/null
-if [ $? = 0 ] ; then
-	echo "sicstuslgt script created (SICStus Prolog integration script)"
-else
-	echo "sicstuslgt script creation failed (SICStus Prolog integration script)"
-fi
-
-./make_swilgt.sh $prefix > /dev/null 2> /dev/null
-if [ $? = 0 ] ; then
-	echo "swilgt script created     (SWI-Prolog integration script)"
-else
-	echo "swilgt script creation failed     (SWI-Prolog integration script)"
-fi
-
-./make_xsblgt.sh $prefix > /dev/null 2> /dev/null
-if [ $? = 0 ] ; then
-	echo "xsblgt script created     (XSB integration script)"
-else
-	echo "xsblgt script creation failed     (XSB integration script)"
-fi
-
-./make_yaplgt.sh $prefix > /dev/null 2> /dev/null
-if [ $? = 0 ] ; then
-	echo "yaplgt script created     (YAP integration script)"
-else
-	echo "yaplgt script creation failed     (YAP integration script)"
-fi	
-
-echo
-echo "Done. Links to the created scripts can be found on $prefix/bin."
-echo "Make sure that the Prolog compilers are also available on your "
-echo "execution path."
-echo
-echo "If you got an unexpected failure when creating or using one of the"
-echo "Prolog integration scripts, make sure that the Prolog compiler is"
-echo "properly installed, consult the NOTES file on the scripts directory,"
-echo "and try to run the corresponding script individually."
-echo
-echo "Users should ensure that the environment variables LOGTALKHOME"
-echo "and LOGTALKUSER are defined and then run the \"cplgtdirs\" script"
-echo "once prior to using the Prolog integration scripts."
-echo
diff --git a/Logtalk/scripts/uninstall.sh b/Logtalk/scripts/uninstall.sh
new file mode 100755
index 000000000..a851c9d1e
--- /dev/null
+++ b/Logtalk/scripts/uninstall.sh
@@ -0,0 +1,64 @@
+#!/bin/sh
+
+## ================================================================
+## Logtalk - Open source object-oriented logic programming language
+## Release 2.30.1
+##
+## Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
+## ================================================================
+
+echo
+echo "Uninstalling Logtalk system-level files..."
+echo
+
+if ! [ "$LOGTALKHOME" ]; then
+	echo "The environment variable LOGTALKHOME should be defined first!"
+	echo "Trying default Logtalk installation directories..."
+	if [ -d "/usr/local/share/logtalk" ]; then
+		LOGTALKHOME=/usr/local/share/logtalk
+		echo "Using Logtalk installation at \"/usr/local/share/logtalk\""
+	elif [ -d "/usr/share/logtalk" ]; then
+		LOGTALKHOME=/usr/share/logtalk
+		echo "Using Logtalk installation at \"/usr/share/logtalk\""
+	elif [ -d "/opt/local/share/logtalk" ]; then
+		LOGTALKHOME=/opt/local/share/logtalk
+		echo "Using Logtalk installation at \"/opt/local/share/logtalk\""
+	elif [ -d "/opt/share/logtalk" ]; then
+		LOGTALKHOME=/opt/share/logtalk
+		echo "Using Logtalk installation at \"/opt/share/logtalk\""
+	else
+		echo "Unable to locate Logtalk installation directory!"
+		echo
+		exit 1
+	fi
+	elif ! [ -d "$LOGTALKHOME" ]; then
+		echo "The environment variable LOGTALKHOME points to a non-existing directory!"
+		echo "Its current value is: $LOGTALKHOME"
+		echo "The variable must be set to your Logtalk installation directory!"
+		echo
+		exit 1
+fi
+
+cd $LOGTALKHOME/..
+rm -rf lgt2301
+rm -f logtalk
+cd ../bin
+rm -f bplgt
+rm -f ciaolgt
+rm -f cplgtdirs
+rm -f cxlgt
+rm -f eclipselgt
+rm -f gplgt
+rm -f lgt2html
+rm -f lgt2pdf
+rm -f lgt2xml
+rm -f plclgt
+rm -f qplgt
+rm -f sicstuslgt
+rm -f swilgt
+rm -f xsblgt
+rm -f yaplgt
+
+echo "Logtalk system-level uninstall completed. For uninstalling user-level"
+echo "Logtalk files simply delete the LOGTALKUSER directories."
+echo
diff --git a/Logtalk/scripts/windows/NOTES.txt b/Logtalk/scripts/windows/NOTES.txt
index df71ac664..abdd6bbc9 100644
--- a/Logtalk/scripts/windows/NOTES.txt
+++ b/Logtalk/scripts/windows/NOTES.txt
@@ -1,9 +1,12 @@
-=================================================================
-Logtalk - Object oriented extension to Prolog
-Release 2.29.5
+================================================================
+Logtalk - Open source object-oriented logic programming language
+Release 2.30.1
 
 Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-=================================================================
+================================================================
 
 
-This directory contains files used when building Windows installers.
+This directory contains files used when building Windows 2000/XP GUI 
+installers using Inno Setup 5.1.11 (or a later version):
+
+	http://www.jrsoftware.org/isinfo.php
diff --git a/Logtalk/scripts/windows/logtalk.iss b/Logtalk/scripts/windows/logtalk.iss
index d866a1070..d79949f83 100644
--- a/Logtalk/scripts/windows/logtalk.iss
+++ b/Logtalk/scripts/windows/logtalk.iss
@@ -1,7 +1,7 @@
 ; Script generated by the Inno Setup Script Wizard.
 
 #define MyAppName "Logtalk"
-#define MyAppVerName "Logtalk 2.29.5"
+#define MyAppVerName "Logtalk 2.30.1"
 #define MyAppPublisher "Logtalk.org"
 #define MyAppURL "http://logtalk.org"
 #define MyAppUrlName "Logtalk Web Site.url"
@@ -24,12 +24,12 @@ DefaultGroupName={#MyAppName}
 DisableProgramGroupPage=yes
 LicenseFile=C:\logtalk\LICENSE.txt
 InfoBeforeFile=C:\logtalk\README.txt
-OutputBaseFilename=lgt2295
+OutputBaseFilename=lgt2301
 Compression=lzma
 SolidCompression=yes
 PrivilegesRequired=none
 
-VersionInfoVersion=2.29.5
+VersionInfoVersion=2.30.1
 VersionInfoCopyright=© Paulo Moura, 1998-2007
 
 AllowRootDirectory=yes
@@ -49,7 +49,7 @@ Name: "base"; Description: "Base system"; Types: full base custom; Flags: disabl
 Name: "user"; Description: "User data files"; Types: full user custom; Flags: checkablealone disablenouninstallwarning
 Name: "user\backup"; Description: "Backup current user data files"; Types: full user custom; Flags: disablenouninstallwarning
 Name: "prolog"; Description: "Prolog integration"; Types: full prolog custom; Flags: disablenouninstallwarning
-Name: "prolog\bp"; Description: "B-Prolog integration (version 6.9 or later)"; Types: full prolog custom; Flags: disablenouninstallwarning
+Name: "prolog\bp"; Description: "B-Prolog integration (version 7.0 or later)"; Types: full prolog custom; Flags: disablenouninstallwarning
 Name: "prolog\ciao"; Description: "Ciao Prolog integration (version 1.10#5 or later)"; Types: full prolog custom; Flags: disablenouninstallwarning
 Name: "prolog\eclipse"; Description: "ECLiPSe integration (version 5.10#26 or later)"; Types: full prolog custom; Flags: disablenouninstallwarning
 Name: "prolog\gprolog"; Description: "GNU Prolog integration (version 1.2.16 or later)"; Types: full prolog custom; Flags: disablenouninstallwarning
@@ -67,7 +67,7 @@ Name: shortcut; Description: "&Create a desktop shortcut to the Logtalk user fol
 Name: "english"; MessagesFile: "compiler:Default.isl"
 
 [Messages]
-BeveledLabel=Logtalk 2.29.5 © Paulo Moura, 1998-2007
+BeveledLabel=Logtalk 2.30.1 © Paulo Moura, 1998-2007
 
 [Dirs]
 Name: {code:GetLgtUserDir}; Components: user; Flags: uninsneveruninstall
@@ -85,6 +85,7 @@ Source: "C:\logtalk\xml\*"; Excludes: ".*,CVS"; DestDir: "{code:GetLgtUserDir}\x
 
 Source: "C:\logtalk\configs\amzi.config"; DestDir: "{code:GetLgtUserDir}\configs"; DestName: "amzi.pro"; Components: user; Flags: ignoreversion uninsneveruninstall
 Source: "C:\logtalk\configs\xsb.config"; DestDir: "{code:GetLgtUserDir}\configs"; DestName: "xsb.pl"; Components: user; Flags: ignoreversion uninsneveruninstall
+Source: "C:\logtalk\configs\xsbcvs.config"; DestDir: "{code:GetLgtUserDir}\configs"; DestName: "xsbcvs.pl"; Components: user; Flags: ignoreversion uninsneveruninstall
 Source: "C:\logtalk\libpaths\libpaths.pl"; DestDir: "{code:GetLgtUserDir}\libpaths"; DestName: "libpaths_no_env_var.pl"; Components: user; Flags: ignoreversion uninsneveruninstall
 
 Source: "C:\logtalk\scripts\*.bat"; DestDir: "{win}"; Components: base; Flags: ignoreversion
@@ -95,14 +96,37 @@ Filename: "{app}\{#MyAppUrlName}"; Section: "InternetShortcut"; Key: "URL"; Stri
 Filename: "{app}\{#MyAppRegUrlName}"; Section: "InternetShortcut"; Key: "URL"; String: "{#MyAppRegURL}"; Components: base
 
 [Icons]
-Name: "{group}\{#MyAppName} Bibliography"; Filename: "{app}\BIBLIOGRAPHY.bib"; Components: base
-Name: "{group}\{#MyAppName} Documentation"; Filename: "{app}\manuals\index.html"; Components: base
-Name: "{group}\{#MyAppName} License"; Filename: "{app}\LICENSE.txt"; Components: base
-Name: "{group}\{#MyAppName} Release Notes"; Filename: "{app}\RELEASE_NOTES.txt"; Components: base
-Name: "{group}\{#MyAppName} Read Me"; Filename: "{app}\README.txt"; Components: base
-Name: "{group}\{#MyAppName} Customization instructions"; Filename: "{app}\CUSTOMIZE.txt"; Components: base
+Name: "{group}\Bibliography"; Filename: "{app}\BIBLIOGRAPHY.bib"; Components: base
+Name: "{group}\Documentation"; Filename: "{app}\manuals\index.html"; Components: base
+Name: "{group}\License"; Filename: "{app}\LICENSE.txt"; Components: base
+Name: "{group}\Release Notes"; Filename: "{app}\RELEASE_NOTES.txt"; Components: base
+Name: "{group}\Read Me"; Filename: "{app}\README.txt"; Components: base
+Name: "{group}\Customization instructions"; Filename: "{app}\CUSTOMIZE.txt"; Components: base
+
+Name: "{group}\Web Site"; Filename: "{#MyAppUrl}"; Components: base
+
+Name: "{group}\Logtalk - B-Prolog"; Filename: "{code:GetBPExePath}"; Parameters: "-g ""consult('$LOGTALKHOME/integration/logtalk_bp.pl'), $bp_top_level"""; Comment: "Runs Logtalk with B-Prolog"; WorkingDir: "{code:GetLgtUserDir}"; Components: prolog\bp; Flags: createonlyiffileexists
+
+Name: "{group}\Logtalk - Ciao Prolog"; Filename: "{code:GetCiaoExePath}"; Parameters: "-l ""$LOGTALKHOME/integration/logtalk_ciao.pl"""; Comment: "Runs Logtalk with Ciao Prolog"; WorkingDir: "{code:GetLgtUserDir}"; Components: prolog\ciao; Flags: createonlyiffileexists
+
+Name: "{group}\Logtalk - ECLiPSe"; Filename: "{code:GetEclipseExePath}"; Parameters: "-b ""%LOGTALKHOME%\integration\logtalk_eclipse.pl"""; Comment: "Runs Logtalk with ECLiPSe"; WorkingDir: "{code:GetLgtUserDir}"; Components: prolog\eclipse; Flags: createonlyiffileexists
+
+Name: "{group}\Logtalk - GNU Prolog"; Filename: "{code:GetGPExePath}"; Parameters: "--init-goal ""['$LOGTALKUSER/configs/gnu.config', '$LOGTALKHOME/integration/logtalk_gp.pl', '$LOGTALKUSER/libpaths/libpaths.pl']"""; Comment: "Runs Logtalk with GNU Prolog"; WorkingDir: "{code:GetLgtUserDir}"; Components: prolog\gprolog; Flags: createonlyiffileexists
+
+Name: "{group}\Logtalk - K-Prolog"; Filename: "{code:GetKPExePath}"; Parameters: "-h 2048k -l 1024k -g 2048k -e ""(consult('$LOGTALKHOME/integration/logtalk_plc.pl'), '$root')."""; Comment: "Runs Logtalk with K-Prolog"; WorkingDir: "{code:GetLgtUserDir}"; Components: prolog\gprolog; Flags: createonlyiffileexists
+
+Name: "{group}\Logtalk - SICStus Prolog 3"; Filename: "{code:GetSP3ExePath}"; Parameters: "-l ""%LOGTALKHOME%\integration\logtalk_sicstus3.pl"""; Comment: "Runs Logtalk with SSICStus Prolog 3"; WorkingDir: "{code:GetLgtUserDir}"; Components: prolog\sicstus; Flags: createonlyiffileexists
+
+Name: "{group}\Logtalk - SICStus Prolog 4"; Filename: "{code:GetSP4ExePath}"; Parameters: "-l ""%LOGTALKHOME%\integration\logtalk_sicstus4.pl"""; Comment: "Runs Logtalk with SICStus Prolog 4"; WorkingDir: "{code:GetLgtUserDir}"; Components: prolog\sicstus; Flags: createonlyiffileexists
+
+Name: "{group}\Logtalk - SWI-Prolog"; Filename: "{code:GetSWIExePath}"; Parameters: "-f ""%LOGTALKHOME%\integration\logtalk_swi.pl"""; Comment: "Runs Logtalk with SWI-Prolog"; WorkingDir: "{code:GetLgtUserDir}"; Components: prolog\swi; Flags: createonlyiffileexists
+
+Name: "{group}\Logtalk - XSB"; Filename: "C:\XSB\config\x86-pc-windows\bin\xsb.exe"; Parameters: "-l -e ""['%LOGTALKUSER%\\configs\\xsb.pl', '%LOGTALKHOME%\\compiler\\logtalk.pl', '%LOGTALKUSER%\\libpaths\\libpaths_no_env_var.pl']."""; Comment: "Runs Logtalk with XSB"; WorkingDir: "{code:GetLgtUserDir}"; Components: prolog\xsb; Flags: createonlyiffileexists
+
+Name: "{group}\Logtalk - XSB CVS"; Filename: "C:\XSB\config\x86-pc-windows\bin\xsb.exe"; Parameters: "-l -e ""['%LOGTALKUSER%\\configs\\xsbcvs.pl', '%LOGTALKHOME%\\compiler\\logtalk.pl', '%LOGTALKUSER%\\libpaths\\libpaths.pl']."""; Comment: "Runs Logtalk with XSB CVS"; WorkingDir: "{code:GetLgtUserDir}"; Components: prolog\xsb; Flags: createonlyiffileexists
+
+Name: "{group}\Logtalk - YAP"; Filename: "C:\Yap\bin\yap.exe"; Parameters: "-l ""$LOGTALKHOME/integration/logtalk_yap.pl"""; Comment: "Runs Logtalk with YAP"; WorkingDir: "{code:GetLgtUserDir}"; Components: prolog\yap; Flags: createonlyiffileexists
 
-Name: "{group}\{#MyAppName} Web Site"; Filename: "{#MyAppUrl}"; Components: base
 Name: "{group}\{cm:UninstallProgram,{#MyAppName}}"; Filename: "{uninstallexe}"; Components: base
 
 Name: "{code:GetLgtUserDir}\manuals"; Filename: "{app}\manuals"; Components: user
@@ -115,16 +139,6 @@ Root: HKLM; Subkey: "SYSTEM\CurrentControlSet\Control\Session Manager\Environmen
 Root: HKCU; Subkey: "Environment"; ValueType: expandsz; ValueName: "LOGTALKUSER"; ValueData: "{code:GetLgtUserDir}"; Flags: deletevalue uninsdeletevalue
 
 [Run]
-Filename: "{cmd}"; Parameters: "/C set LOGTALKHOME={app} & cscript ""{app}\scripts\make_bplgt.js"""; Description: "B-Prolog integration"; Components: prolog\bp
-Filename: "{cmd}"; Parameters: "/C set LOGTALKHOME={app} & cscript ""{app}\scripts\make_ciaolgt.js"""; Description: "Ciao Prolog integration"; Components: prolog\ciao
-Filename: "{cmd}"; Parameters: "/C set LOGTALKHOME={app} & cscript ""{app}\scripts\make_eclipselgt.js"""; Description: "ECLiPSe integration"; Components: prolog\eclipse
-Filename: "{cmd}"; Parameters: "/C set LOGTALKHOME={app} & cscript ""{app}\scripts\make_gplgt.js"""; Description: "GNU Prolog integration"; Components: prolog\gprolog
-Filename: "{cmd}"; Parameters: "/C set LOGTALKHOME={app} & cscript ""{app}\scripts\make_plclgt.js"""; Description: "K-Prolog integration"; Components: prolog\plc
-Filename: "{cmd}"; Parameters: "/C set LOGTALKHOME={app} & cscript ""{app}\scripts\make_sicstuslgt.js"""; Description: "SICStus Prolog integration"; Components: prolog\sicstus
-Filename: "{cmd}"; Parameters: "/C set LOGTALKHOME={app} & cscript ""{app}\scripts\make_swilgt.js"""; Description: "SWI-Prolog integration"; Components: prolog\swi
-Filename: "{cmd}"; Parameters: "/C set LOGTALKHOME={app} & cscript ""{app}\scripts\make_xsblgt.js"""; Description: "XSB integration"; Components: prolog\xsb
-Filename: "{cmd}"; Parameters: "/C set LOGTALKHOME={app} & cscript ""{app}\scripts\make_yaplgt.js"""; Description: "YAP integration"; Components: prolog\yap
-
 Filename: "{app}\RELEASE_NOTES.txt"; Description: "View the release notes"; Components: base user; Flags: postinstall shellexec skipifsilent
 Filename: "{app}\CUSTOMIZE.txt"; Description: "Read the customization instructions for completing your setup"; Components: base user; Flags: postinstall shellexec skipifsilent
 
@@ -138,7 +152,7 @@ Type: filesandordirs; Name: "{group}"; Components: base
 var
   LgtUserDirPage: TInputDirWizardPage;
   WarningPage: TOutputMsgWizardPage;
-  Explanation, Warning, Scripts: String;
+  Explanation, Warning: String;
 
 procedure InitializeWizard;
 begin
@@ -196,14 +210,82 @@ end;
 procedure CurStepChanged(CurStep: TSetupStep);
 begin
   if (CurStep = ssInstall) and DirExists(LgtUserDirPage.Values[0]) and (pos('backup', WizardSelectedComponents(False)) > 0) then
-    RenameFile(LgtUserDirPage.Values[0], LgtUserDirPage.Values[0] + ' backup ' + GetDateTimeString('dddddd tt', '-', '-'));
-  if (CurStep = ssInstall) and (pos('prolog', WizardSelectedComponents(False)) > 0) then
-  begin
-    Scripts := 'The installer needs to run a set of JScripts scripts within command shells' + Chr(13) +
-               'in order to integrate Logtalk with your installed Prolog compilers.' + Chr(13) + Chr(13) +
-               'These scripts require WSH 5.6 (or later version) to be installed.' + Chr(13) + Chr(13) +
-               'Make sure that any security software you may have installed do not block' + Chr(13) +
-               'the execution of the scripts.';
-    MsgBox(Scripts, mbInformation, MB_OK)
-  end
+    RenameFile(LgtUserDirPage.Values[0], LgtUserDirPage.Values[0] + ' backup ' + GetDateTimeString('dddddd tt', '-', '-'))
+end;
+
+function GetBPExePath(Param: String): String;
+var
+  BPDIR: String;
+begin
+  if RegQueryStringValue(HKLM, 'SYSTEM\CurrentControlSet\Control\Session Manager\Environment\', 'BPDIR', BPDIR) then
+    Result := BPDIR + '\bp.bat'
+  else
+	Result := 'lgt_exe_does_not_exist'
+end;
+
+function GetCiaoExePath(Param: String): String;
+var
+  CiaoDir: String;
+begin
+  if RegQueryStringValue(HKLM, 'Software\Ciao Prolog\', 'ciao_dir', CiaoDir) then
+    Result := CiaoDir + '\shell\ciaosh.cpx'
+  else
+	Result := 'lgt_exe_does_not_exist'
+end;
+
+function GetEclipseExePath(Param: String): String;
+var
+  ECLIPSEDIR: String;
+begin
+  if RegQueryStringValue(HKLM, 'Software\IC-Parc\Eclipse\5.11\', 'ECLIPSEDIR', ECLIPSEDIR) then
+    Result := ECLIPSEDIR + '\lib\i386_nt\eclipse.exe'
+  else if RegQueryStringValue(HKLM, 'Software\IC-Parc\Eclipse\5.10\', 'ECLIPSEDIR', ECLIPSEDIR) then
+    Result := ECLIPSEDIR + '\lib\i386_nt\eclipse.exe'
+  else
+	Result := 'lgt_exe_does_not_exist'
+end;
+
+function GetGPExePath(Param: String): String;
+var
+  RootPath: String;
+begin
+  if RegQueryStringValue(HKCU, 'Software\GnuProlog\', 'RootPath', RootPath) then
+    Result := RootPath + '\bin\gprolog.exe'
+  else
+	Result := 'lgt_exe_does_not_exist'
+end;
+
+function GetKPExePath(Param: String): String;
+begin
+    Result := GetEnv('PLC') + '\plc.exe'
+end;
+
+function GetSP3ExePath(Param: String): String;
+var
+  SP_PATH: String;
+begin
+  if RegQueryStringValue(HKLM, 'Software\SICS\SICStus3.12_win32\', 'SP_PATH', SP_PATH) then
+    Result := SP_PATH + '\bin\spwin.exe'
+  else
+	Result := 'lgt_exe_does_not_exist'
+end;
+
+function GetSP4ExePath(Param: String): String;
+var
+  SP_PATH: String;
+begin
+  if RegQueryStringValue(HKLM, 'Software\SICS\SICStus4.0_win32\', 'SP_PATH', SP_PATH) then
+    Result := SP_PATH + '\bin\spwin.exe'
+  else
+	Result := 'lgt_exe_does_not_exist'
+end;
+
+function GetSWIExePath(Param: String): String;
+var
+  Home: String;
+begin
+  if RegQueryStringValue(HKLM, 'Software\SWI\Prolog\', 'home', Home) then
+    Result := Home + '\bin\plwin.exe'
+  else
+	Result := 'lgt_exe_does_not_exist'
 end;
diff --git a/Logtalk/wenv/NOTES.txt b/Logtalk/wenv/NOTES.txt
index a23478214..2c3627ccc 100644
--- a/Logtalk/wenv/NOTES.txt
+++ b/Logtalk/wenv/NOTES.txt
@@ -1,9 +1,9 @@
-=================================================================
-Logtalk - Object oriented extension to Prolog
-Release 2.29.5
+================================================================
+Logtalk - Open source object-oriented logic programming language
+Release 2.30.1
 
 Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-=================================================================
+================================================================
 
 
 This directory contains files that provide syntax highlighting and 
diff --git a/Logtalk/wenv/bbedit/NOTES.txt b/Logtalk/wenv/bbedit/NOTES.txt
index 99fe300a7..c60f98ede 100644
--- a/Logtalk/wenv/bbedit/NOTES.txt
+++ b/Logtalk/wenv/bbedit/NOTES.txt
@@ -1,9 +1,9 @@
-=================================================================
-Logtalk - Object oriented extension to Prolog
-Release 2.29.5
+================================================================
+Logtalk - Open source object-oriented logic programming language
+Release 2.30.1
 
 Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-=================================================================
+================================================================
 
 
 This directory contains files that provide basic syntax highlighting 
diff --git a/Logtalk/wenv/bbedit/logtalk.plist b/Logtalk/wenv/bbedit/logtalk.plist
index 4bc96a9e1..61ee3d971 100644
--- a/Logtalk/wenv/bbedit/logtalk.plist
+++ b/Logtalk/wenv/bbedit/logtalk.plist
@@ -10,6 +10,8 @@
 	
 	BBLMKeywordList
 	
+		:
+		<<
 		::
 		^^
 		{
diff --git a/Logtalk/wenv/context/Logtalk.chl b/Logtalk/wenv/context/Logtalk.chl
index 969e204f1..130e81544 100644
--- a/Logtalk/wenv/context/Logtalk.chl
+++ b/Logtalk/wenv/context/Logtalk.chl
@@ -5,7 +5,7 @@
 //
 //	http://logtalk.org/
 //
-//	Last updated on: October, 16 2006
+//	Last updated on: June 10, 2007
 //
 //////////////////////////////////////////////////////////////////////////////
 
@@ -33,7 +33,7 @@ NumConstChars:
 EscapeChar:             \
 
 
-KeyWords1:              :: ^^ { }
+KeyWords1:              :: ^^ { } : <<
 
 
 StringBegChar:          "
diff --git a/Logtalk/wenv/context/NOTES.txt b/Logtalk/wenv/context/NOTES.txt
index 629ad4944..8ba0a4857 100644
--- a/Logtalk/wenv/context/NOTES.txt
+++ b/Logtalk/wenv/context/NOTES.txt
@@ -1,9 +1,9 @@
-=================================================================
-Logtalk - Object oriented extension to Prolog
-Release 2.29.5
+================================================================
+Logtalk - Open source object-oriented logic programming language
+Release 2.30.1
 
 Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-=================================================================
+================================================================
 
 
 This directory contains files that provides basic syntax coloring for 
diff --git a/Logtalk/wenv/crimson/NOTES.txt b/Logtalk/wenv/crimson/NOTES.txt
index 357f84754..334d874c7 100644
--- a/Logtalk/wenv/crimson/NOTES.txt
+++ b/Logtalk/wenv/crimson/NOTES.txt
@@ -1,9 +1,9 @@
-=================================================================
-Logtalk - Object oriented extension to Prolog
-Release 2.29.5
+================================================================
+Logtalk - Open source object-oriented logic programming language
+Release 2.30.1
 
 Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-=================================================================
+================================================================
 
 
 This directory contains files that provides basic syntax coloring 
diff --git a/Logtalk/wenv/crimson/logtalk.key b/Logtalk/wenv/crimson/logtalk.key
index fd2d163a8..24896e438 100755
--- a/Logtalk/wenv/crimson/logtalk.key
+++ b/Logtalk/wenv/crimson/logtalk.key
@@ -18,7 +18,7 @@ threaded
 implements imports extends instantiates specializes
 
 [KEYWORDS2:GLOBAL]
-:: ^^ { }
+:: ^^ { } : <<
 
 [KEYWORDS3:GLOBAL]
 
diff --git a/Logtalk/wenv/ctags/NOTES.txt b/Logtalk/wenv/ctags/NOTES.txt
index 46ecdba4d..f402e04b3 100644
--- a/Logtalk/wenv/ctags/NOTES.txt
+++ b/Logtalk/wenv/ctags/NOTES.txt
@@ -1,9 +1,9 @@
-=================================================================
-Logtalk - Object oriented extension to Prolog
-Release 2.29.5
+================================================================
+Logtalk - Open source object-oriented logic programming language
+Release 2.30.1
 
 Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-=================================================================
+================================================================
 
 
 This folder contains minimal support for using Exuberant Ctags 
diff --git a/Logtalk/wenv/e/NOTES.txt b/Logtalk/wenv/e/NOTES.txt
index 6f01d99bc..2586577b7 100644
--- a/Logtalk/wenv/e/NOTES.txt
+++ b/Logtalk/wenv/e/NOTES.txt
@@ -1,9 +1,9 @@
-=================================================================
-Logtalk - Object oriented extension to Prolog
-Release 2.29.5
+================================================================
+Logtalk - Open source object-oriented logic programming language
+Release 2.30.1
 
 Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-=================================================================
+================================================================
 
 
 The "e" Windows text editor (http://www.e-texteditor.com/) supports 
diff --git a/Logtalk/wenv/emacs/NOTES.txt b/Logtalk/wenv/emacs/NOTES.txt
index 1b3f95ed5..233345de1 100644
--- a/Logtalk/wenv/emacs/NOTES.txt
+++ b/Logtalk/wenv/emacs/NOTES.txt
@@ -1,9 +1,9 @@
-=================================================================
-Logtalk - Object oriented extension to Prolog
-Release 2.29.5
+================================================================
+Logtalk - Open source object-oriented logic programming language
+Release 2.30.1
 
 Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-=================================================================
+================================================================
 
 
 This directory contains a logtalk.el file that provides syntax 
diff --git a/Logtalk/wenv/emacs/logtalk.el b/Logtalk/wenv/emacs/logtalk.el
index ddddf0519..428c6a363 100644
--- a/Logtalk/wenv/emacs/logtalk.el
+++ b/Logtalk/wenv/emacs/logtalk.el
@@ -4,8 +4,8 @@
 
 ;; Author: Paulo Moura
 ;; Creation date: November 15, 2003
-;; Last modification date: March 24, 2007
-;; Version: 0.96
+;; Last modification date: June 10, 2007
+;; Version: 0.97
 
 ;; Installation:
 ;;
@@ -27,7 +27,7 @@
 
 ;; setup 
 
-(defvar logtalk-mode-version "0.96"
+(defvar logtalk-mode-version "0.97"
 	"Logtalk mode version number")
 
 (defvar logtalk-mode-hook nil)
@@ -229,6 +229,10 @@
 		;;
 		("::\\|\\^\\^\\|[{}]" . 'logtalk-message-operator-face)
 		;;
+		;; category predicate direct call:
+		;;
+		(":" . 'logtalk-message-operator-face)
+		;;
 		;; mode operators:
 		;;
 		("[@?]" . 'logtalk-built-in-predicate-face)
diff --git a/Logtalk/wenv/jedit/NOTES.txt b/Logtalk/wenv/jedit/NOTES.txt
index ecacbaa3c..e9b0847ba 100644
--- a/Logtalk/wenv/jedit/NOTES.txt
+++ b/Logtalk/wenv/jedit/NOTES.txt
@@ -1,9 +1,9 @@
-=================================================================
-Logtalk - Object oriented extension to Prolog
-Release 2.29.5
+================================================================
+Logtalk - Open source object-oriented logic programming language
+Release 2.30.1
 
 Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-=================================================================
+================================================================
 
 
 This directory contains files that provide syntax highlighting, automatic
diff --git a/Logtalk/wenv/jedit/logtalk.xml b/Logtalk/wenv/jedit/logtalk.xml
index 5469f7ffb..0bfdfc4a0 100644
--- a/Logtalk/wenv/jedit/logtalk.xml
+++ b/Logtalk/wenv/jedit/logtalk.xml
@@ -5,9 +5,9 @@
 
+		:
+
 		
 		!
 		,
diff --git a/Logtalk/wenv/kate/NOTES.txt b/Logtalk/wenv/kate/NOTES.txt
index d7cdc7347..80bf9dc97 100644
--- a/Logtalk/wenv/kate/NOTES.txt
+++ b/Logtalk/wenv/kate/NOTES.txt
@@ -1,9 +1,9 @@
-=================================================================
-Logtalk - Object oriented extension to Prolog
-Release 2.29.5
+================================================================
+Logtalk - Open source object-oriented logic programming language
+Release 2.30.1
 
 Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-=================================================================
+================================================================
 
 
 This directory contains files that provide support for code folding and 
diff --git a/Logtalk/wenv/kate/logtalk.xml b/Logtalk/wenv/kate/logtalk.xml
index 77b6d8e72..6370ced0e 100644
--- a/Logtalk/wenv/kate/logtalk.xml
+++ b/Logtalk/wenv/kate/logtalk.xml
@@ -1,7 +1,7 @@
 
 
 
-
+
 
 	
 
@@ -141,6 +141,8 @@
 				
 				
 				
+				
+				
 				
 				
 				
diff --git a/Logtalk/wenv/nano/NOTES.txt b/Logtalk/wenv/nano/NOTES.txt
new file mode 100644
index 000000000..8bb42bed8
--- /dev/null
+++ b/Logtalk/wenv/nano/NOTES.txt
@@ -0,0 +1,22 @@
+================================================================
+Logtalk - Open source object-oriented logic programming language
+Release 2.30.1
+
+Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
+================================================================
+
+
+This directory contains a "logtalk.nanorc" file that provides basic syntax 
+highlighting for editing Logtalk source files with the GNU Nano 2.x text 
+editor:
+
+	http://www.nano-editor.org/
+
+To install copy the file "logtalk.nanorc" to the directory:
+
+    $prefix/share/nano/
+
+where "$prefix" is the prefix for the Nano installation directory 
+(usually "/usr/local" or "/opt/local").
+
+THIS SYNTAX COLORING FILE IS UNDER DEVELOPMENT.
diff --git a/Logtalk/wenv/nano/logtalk.nanorc b/Logtalk/wenv/nano/logtalk.nanorc
new file mode 100644
index 000000000..7f5a84359
--- /dev/null
+++ b/Logtalk/wenv/nano/logtalk.nanorc
@@ -0,0 +1,19 @@
+## Here is an example for Logtalk.
+##
+syntax "logtalk" "\.(lgt|config)$"
+
+color magenta "::"
+color magenta ":"
+color magenta "\^\^"
+color magenta "<<"
+color magenta "[{}]"
+color black ":-"
+
+color brightblack start="^[[:space:]]*:- (object|category|protocol)\(" end="\)\."
+color brightblack "^[[:space:]]*:- end_(object|category|protocol)\."
+
+color green ""[^"]*""
+color green "'[^']*'"
+
+color blue "%.*"
+color blue start="/\*" end="\*/"
diff --git a/Logtalk/wenv/nedit/NOTES.txt b/Logtalk/wenv/nedit/NOTES.txt
index f851c4172..437f60d6f 100644
--- a/Logtalk/wenv/nedit/NOTES.txt
+++ b/Logtalk/wenv/nedit/NOTES.txt
@@ -1,9 +1,9 @@
-=================================================================
-Logtalk - Object oriented extension to Prolog
-Release 2.29.5
+================================================================
+Logtalk - Open source object-oriented logic programming language
+Release 2.30.1
 
 Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-=================================================================
+================================================================
 
 
 This directory contains a file that provides syntax highlighting 
diff --git a/Logtalk/wenv/nedit/logtalk.pats b/Logtalk/wenv/nedit/logtalk.pats
index 0cf780a6a..b65fec33a 100644
--- a/Logtalk/wenv/nedit/logtalk.pats
+++ b/Logtalk/wenv/nedit/logtalk.pats
@@ -2,7 +2,7 @@
 !
 ! Author: Paulo Moura (pmoura at logtalk.org)
 !
-! Last changed in: December 14, 2006
+! Last changed in: June 10, 2007
 !
 !
 ! To install this patterns file:
@@ -29,6 +29,7 @@ nedit.highlightPatterns: Logtalk:1:0{\n\
 	Clause operators:":\\-|\\.|,":::Keyword::\n\
 	Term testing:"(?|\\-\\>|<(true|fail)>":::Subroutine::\n\
 	Control constructs:"<(call|catch|throw)(?=[(])":::Subroutine::\n\
 	Block comment:"/\\*":"\\*/"::Comment::\n\
diff --git a/Logtalk/wenv/npp/NOTES.txt b/Logtalk/wenv/npp/NOTES.txt
index a97833b0d..068bf2da3 100644
--- a/Logtalk/wenv/npp/NOTES.txt
+++ b/Logtalk/wenv/npp/NOTES.txt
@@ -1,9 +1,9 @@
-=================================================================
-Logtalk - Object oriented extension to Prolog
-Release 2.29.5
+================================================================
+Logtalk - Open source object-oriented logic programming language
+Release 2.30.1
 
 Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-=================================================================
+================================================================
 
 
 This directory contains files that provides basic syntax coloring and 
diff --git a/Logtalk/wenv/smultron/NOTES.txt b/Logtalk/wenv/smultron/NOTES.txt
index b0573d781..0f626d800 100644
--- a/Logtalk/wenv/smultron/NOTES.txt
+++ b/Logtalk/wenv/smultron/NOTES.txt
@@ -1,9 +1,9 @@
-=================================================================
-Logtalk - Object oriented extension to Prolog
-Release 2.29.5
+================================================================
+Logtalk - Open source object-oriented logic programming language
+Release 2.30.1
 
 Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-=================================================================
+================================================================
 
 
 This directory contains the Logtalk.plist file that provides basic syntax 
diff --git a/Logtalk/wenv/smultron/logtalk.plist b/Logtalk/wenv/smultron/logtalk.plist
index 6941d7b57..c23a8abe2 100644
--- a/Logtalk/wenv/smultron/logtalk.plist
+++ b/Logtalk/wenv/smultron/logtalk.plist
@@ -176,6 +176,7 @@
 	
 		::
         ^^
+		<<
 	
 	keywordsCaseSensitive
 	
diff --git a/Logtalk/wenv/source-highlight/NOTES.txt b/Logtalk/wenv/source-highlight/NOTES.txt
index 3cd6b4a9f..e8a54449a 100644
--- a/Logtalk/wenv/source-highlight/NOTES.txt
+++ b/Logtalk/wenv/source-highlight/NOTES.txt
@@ -1,9 +1,9 @@
-=================================================================
-Logtalk - Object oriented extension to Prolog
-Release 2.29.5
+================================================================
+Logtalk - Open source object-oriented logic programming language
+Release 2.30.1
 
 Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-=================================================================
+================================================================
 
 
 This directory contains files that provide support for using version 2.0 
diff --git a/Logtalk/wenv/source-highlight/logtalk.lang b/Logtalk/wenv/source-highlight/logtalk.lang
index 6fcfa994f..c5d8de423 100644
--- a/Logtalk/wenv/source-highlight/logtalk.lang
+++ b/Logtalk/wenv/source-highlight/logtalk.lang
@@ -65,7 +65,7 @@ normal =	'\<[a-z][A-Za-z0-9_]*'
 
 number =	'0\'[A-Za-z0-9] | 0b[0-1]+ | 0o[0-7]+ | 0x[0-9a-fA-F]+ | [0-9]+(\.[0-9]+)?([eE]([-+])?[0-9]+)?'
 
-symbol =	"::", "^^",
+symbol =	"::", "^^", ":",
 			">>", "<<", "/\\", "\\/", "\\",
 			"=:=", "=\\=", "<", "=<", ">", ">=",
 			"=..",
diff --git a/Logtalk/wenv/subethaedit/NOTES.txt b/Logtalk/wenv/subethaedit/NOTES.txt
index 77d5d55ed..c05467533 100644
--- a/Logtalk/wenv/subethaedit/NOTES.txt
+++ b/Logtalk/wenv/subethaedit/NOTES.txt
@@ -1,9 +1,9 @@
-=================================================================
-Logtalk - Object oriented extension to Prolog
-Release 2.29.5
+================================================================
+Logtalk - Open source object-oriented logic programming language
+Release 2.30.1
 
 Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-=================================================================
+================================================================
 
 
 This directory contains files that provide syntax highlighting 
diff --git a/Logtalk/wenv/subethaedit/logtalk.plist b/Logtalk/wenv/subethaedit/logtalk.plist
index 01133ee12..695c1105c 100644
--- a/Logtalk/wenv/subethaedit/logtalk.plist
+++ b/Logtalk/wenv/subethaedit/logtalk.plist
@@ -134,6 +134,23 @@
 			
 		
 
+		
+			Name
+			Category predicate direct call
+			Color
+			
+				0.000
+				0.000
+				1.000
+			
+			Multiline
+			
+			Regular Expressions
+			
+				:
+			
+		
+
 		
 			Name
 			External Call
diff --git a/Logtalk/wenv/subethaedit2/Logtalk.mode/Contents/Resources/SyntaxDefinition.xml b/Logtalk/wenv/subethaedit2/Logtalk.mode/Contents/Resources/SyntaxDefinition.xml
index 2d96ff599..c64ad6ce2 100644
--- a/Logtalk/wenv/subethaedit2/Logtalk.mode/Contents/Resources/SyntaxDefinition.xml
+++ b/Logtalk/wenv/subethaedit2/Logtalk.mode/Contents/Resources/SyntaxDefinition.xml
@@ -52,6 +52,10 @@
 				(\^\^)
 			
 
+			
+				(:)			
+			
+
 			
 				(\{)			
 				(\})
diff --git a/Logtalk/wenv/subethaedit2/NOTES.txt b/Logtalk/wenv/subethaedit2/NOTES.txt
index 6b6956e54..53dc4c540 100644
--- a/Logtalk/wenv/subethaedit2/NOTES.txt
+++ b/Logtalk/wenv/subethaedit2/NOTES.txt
@@ -1,9 +1,9 @@
-=================================================================
-Logtalk - Object oriented extension to Prolog
-Release 2.29.5
+================================================================
+Logtalk - Open source object-oriented logic programming language
+Release 2.30.1
 
 Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-=================================================================
+================================================================
 
 
 This directory contains the Logtalk.mode bundle, which provides syntax 
diff --git a/Logtalk/wenv/superedi/Logtalk.syn b/Logtalk/wenv/superedi/Logtalk.syn
index 6eb694f3c..c8512cde4 100644
--- a/Logtalk/wenv/superedi/Logtalk.syn
+++ b/Logtalk/wenv/superedi/Logtalk.syn
@@ -56,6 +56,11 @@ Method = ^\s*:-\spublic[(]{[a-z][a-zA-Z0-9_]+}
 ::
 
 
+; Logtalk category predicate direct call operator
+
+:
+
+
 ; Logtalk external call
 {
 }
diff --git a/Logtalk/wenv/superedi/NOTES.txt b/Logtalk/wenv/superedi/NOTES.txt
index 1edde557b..48ac0777c 100644
--- a/Logtalk/wenv/superedi/NOTES.txt
+++ b/Logtalk/wenv/superedi/NOTES.txt
@@ -1,9 +1,9 @@
-=================================================================
-Logtalk - Object oriented extension to Prolog
-Release 2.29.5
+================================================================
+Logtalk - Open source object-oriented logic programming language
+Release 2.30.1
 
 Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-=================================================================
+================================================================
 
 
 This directory contains files that provides basic syntax coloring, 
diff --git a/Logtalk/wenv/tests/NOTES.txt b/Logtalk/wenv/tests/NOTES.txt
index cc1e64b99..2e87b5673 100644
--- a/Logtalk/wenv/tests/NOTES.txt
+++ b/Logtalk/wenv/tests/NOTES.txt
@@ -1,9 +1,9 @@
-=================================================================
-Logtalk - Object oriented extension to Prolog
-Release 2.29.5
+================================================================
+Logtalk - Open source object-oriented logic programming language
+Release 2.30.1
 
 Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-=================================================================
+================================================================
 
 
 This directory contains example Logtalk source files for testing 
diff --git a/Logtalk/wenv/textmate/Logtalk.tmbundle/Syntaxes/Logtalk.plist b/Logtalk/wenv/textmate/Logtalk.tmbundle/Syntaxes/Logtalk.plist
index d21b56cb8..42ee5089e 100644
--- a/Logtalk/wenv/textmate/Logtalk.tmbundle/Syntaxes/Logtalk.plist
+++ b/Logtalk/wenv/textmate/Logtalk.tmbundle/Syntaxes/Logtalk.plist
@@ -133,7 +133,7 @@
 		
 		
 			match
-			(::|\^\^)
+			(:|::|\^\^)
 			name
 			keyword.operator.message-sending.logtalk
 		
diff --git a/Logtalk/wenv/textmate/NOTES.txt b/Logtalk/wenv/textmate/NOTES.txt
index e071263e2..7ae8106cb 100644
--- a/Logtalk/wenv/textmate/NOTES.txt
+++ b/Logtalk/wenv/textmate/NOTES.txt
@@ -1,9 +1,9 @@
-=================================================================
-Logtalk - Object oriented extension to Prolog
-Release 2.29.5
+================================================================
+Logtalk - Open source object-oriented logic programming language
+Release 2.30.1
 
 Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-=================================================================
+================================================================
 
 
 This directory contains the Logtalk.tmbundle bundle, which provides code 
diff --git a/Logtalk/wenv/textpad/NOTES.txt b/Logtalk/wenv/textpad/NOTES.txt
index b5600bb06..3b5665158 100644
--- a/Logtalk/wenv/textpad/NOTES.txt
+++ b/Logtalk/wenv/textpad/NOTES.txt
@@ -1,9 +1,9 @@
-=================================================================
-Logtalk - Object oriented extension to Prolog
-Release 2.29.5
+================================================================
+Logtalk - Open source object-oriented logic programming language
+Release 2.30.1
 
 Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-=================================================================
+================================================================
 
 
 This directory contains a file that provides basic syntax highlighting 
diff --git a/Logtalk/wenv/textpad/logtalk.syn b/Logtalk/wenv/textpad/logtalk.syn
index 2619a23ef..849074425 100644
--- a/Logtalk/wenv/textpad/logtalk.syn
+++ b/Logtalk/wenv/textpad/logtalk.syn
@@ -56,6 +56,11 @@ CharEsc = \
 ::
 
 
+; Logtalk category predicate direct call operator
+
+:
+
+
 ; Logtalk external call
 {
 }
diff --git a/Logtalk/wenv/textwrangler/NOTES.txt b/Logtalk/wenv/textwrangler/NOTES.txt
index 315f4eb4f..6c8483e23 100644
--- a/Logtalk/wenv/textwrangler/NOTES.txt
+++ b/Logtalk/wenv/textwrangler/NOTES.txt
@@ -1,9 +1,9 @@
-=================================================================
-Logtalk - Object oriented extension to Prolog
-Release 2.29.5
+================================================================
+Logtalk - Open source object-oriented logic programming language
+Release 2.30.1
 
 Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-=================================================================
+================================================================
 
 
 See the ../bbedit folder.
diff --git a/Logtalk/wenv/vim/NOTES.txt b/Logtalk/wenv/vim/NOTES.txt
index 491564001..9a5a1440e 100644
--- a/Logtalk/wenv/vim/NOTES.txt
+++ b/Logtalk/wenv/vim/NOTES.txt
@@ -1,9 +1,9 @@
-=================================================================
-Logtalk - Object oriented extension to Prolog
-Release 2.29.5
+================================================================
+Logtalk - Open source object-oriented logic programming language
+Release 2.30.1
 
 Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-=================================================================
+================================================================
 
 
 This directory contains files that provides syntax highlighting, code 
diff --git a/Logtalk/wenv/vim/syntax/logtalk.vim b/Logtalk/wenv/vim/syntax/logtalk.vim
index 2f34e776e..86119cc3c 100644
--- a/Logtalk/wenv/vim/syntax/logtalk.vim
+++ b/Logtalk/wenv/vim/syntax/logtalk.vim
@@ -38,6 +38,7 @@ syn region	logtalkAtom		start=+'+	skip=+\\'+	end=+'+
 " Logtalk message sending operators
 
 syn match	logtalkOperator		"::"
+syn match	logtalkOperator		":"
 syn match	logtalkOperator		"\^\^"
 
 
diff --git a/Logtalk/wenv/xcode/NOTES.txt b/Logtalk/wenv/xcode/NOTES.txt
index 7cf0c3064..ab2f6fba7 100644
--- a/Logtalk/wenv/xcode/NOTES.txt
+++ b/Logtalk/wenv/xcode/NOTES.txt
@@ -1,9 +1,9 @@
-=================================================================
-Logtalk - Object oriented extension to Prolog
-Release 2.29.5
+================================================================
+Logtalk - Open source object-oriented logic programming language
+Release 2.30.1
 
 Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-=================================================================
+================================================================
 
 
 This directory contains some files that provide basic syntax highlighting 
diff --git a/Logtalk/xml/NOTES.txt b/Logtalk/xml/NOTES.txt
index f9950dabd..eb7144dc5 100644
--- a/Logtalk/xml/NOTES.txt
+++ b/Logtalk/xml/NOTES.txt
@@ -1,9 +1,9 @@
-=================================================================
-Logtalk - Object oriented extension to Prolog
-Release 2.29.5
+================================================================
+Logtalk - Open source object-oriented logic programming language
+Release 2.30.1
 
 Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
-=================================================================
+================================================================
 
 
 This folder contains supporting files for converting and/or indexing XML 
diff --git a/Logtalk/xml/custom.ent b/Logtalk/xml/custom.ent
index 6d96dbfac..31f817e5f 100644
--- a/Logtalk/xml/custom.ent
+++ b/Logtalk/xml/custom.ent
@@ -2,8 +2,8 @@