18498c43d2
git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@576 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
732 lines
25 KiB
Plaintext
732 lines
25 KiB
Plaintext
=================================================================
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Logtalk - Object oriented extension to Prolog
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Release 2.14.2
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Copyright (c) 1998-2002 Paulo Moura. All Rights Reserved.
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=================================================================
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RELEASE NOTES
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=============
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2.14.2 - August 26, 2002
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Calls to built-in method parameter/2 are now compiled inline, improving
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call performance.
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Updated Logtalk compiler to clean temporary compilation predicates after
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compiling an entity instead of only before compilation.
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Updated YAP 4.3.x config file for better Logtalk integration by hiding
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all internal compiler, runtime, and compiled entities static predicates.
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Updated GNU Prolog config file for better Logtalk integration by hiding
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all internal compiler, runtime, and compiled entities predicates.
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Updated the XSLT conversion scripts lgtxml.xsl and lgthtml.xsl to correct
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some HTML conformance errors in the generated pages.
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Corrected some XHTML conformance errors in the manual pages.
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2.14.1 - July 31, 2002
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New Windows NT script and updated Unix shell script for batch converting
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XML documenting files to HTML. Both scripts also generate an index.html
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file containing links to all converted XML documenting files.
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Corrected wrong XHTML DOCTYPE declaration in manual pages.
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2.14.0 - July 26, 2002
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Renamed all compiler and runtime internal predicates and all auxiliary
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predicates in the config files to start with a "$" character.
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New compiler option, code_prefix, to set a prefix for all Prolog code
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functors generated by Logtalk when compiling entities. Default is ''.
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New compiler option, named_anonymous_vars, that instructs the compiler to
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interpret variables that start with an underscore as anonymous variables
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(and to not report them as singleton variables). Default value is "off".
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Directive info/2 was wrongly declared as a entity directive instead of a
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predicate directive.
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Converted all manual pages to XHTML 1.0 format. Corrected a wrong link in
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the reference manual. Replaced GIF images by PNG versions.
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Updated BProlog 6.x config file to workaround the new 6.2 built-in
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predicate ::/2 that conflicts with the same named Logtalk message sending
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operator.
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Removed call to the obsolete built-in predicate nodbgcomp/0 from all
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ECLiPSe config files.
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2.13.0 - June 15, 2002
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Logtalk now outputs Prolog code using write_canonical/2 instead of
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write_term/3. Goals are better portability of the generated Prolog files
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and avoid issues with clauses with long bodies for Prolog compilers that
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use a term print depth limit to prevent problems with cyclic terms.
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Added report of default flag values at Logtalk startup.
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Logtalk now prints a warning when redefining parametric objects.
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Removed need of an abort/0 predicate from the Logtalk debugger example.
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Removed any definition of this predicate from the config files.
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Added missing definitions for some ISO built-in predicates to the Amzi!
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Prolog 6.2.2 config file.
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2.12.0 - May 25, 2002
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New read-only Logtalk flag "version". Corrected exception term generated
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when trying to modify a read-only flag using the set_logtalk_flag/2
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built-in predicate.
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Updated config file for OpenProlog 1.1b5.
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New config file for ECLiPSe 5.4.
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Renamed config files for CIAO 1.7 (beta of 1.8) to "ciao_aux18.config"
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and "ciao18.config".
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Updated config file for Amzi! Prolog 6.2.2.
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New example of using some of the built-in database handling methods
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(dynpred).
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Syntax configuration files for jEdit 4.0, VIM 6.1, NEdit 5.2, and
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TextPad 4.5 text editors providing syntax highlighting for editing
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Logtalk source files.
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2.11.0 - April 22, 2002
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Added a "smart compilation" feature to the Logtalk compiler, controlled
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by a "smart_compilation" flag. Only available in Prolog compilers that
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provide access to file modification dates.
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Added a "startup_message" flag to control printing of the Logtalk banner
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at startup.
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Reworked Logtalk pre-processor compilation and loading reports. Compiler
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option "report" now togles between normal reporting (as specified by the
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other flags) and silent compilation/loading of source files.
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2.10.0 - April 5, 2002
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Scope of object asserted predicates for which there is no declaration is
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now a function of the context instead of always being declared public.
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Asserting in this, the predicate is declared private, asserting in self,
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the predicate is declared protected, otherwise the predicate is declared
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public.
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Throw an error if a category contains clauses for dynamic predicates.
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Updated documentation on categories and built-in methods for database
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handling.
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Retracting all clauses for a dynamic predicate from an object now allows
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an inherited definition to be called when sending the corresponding
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message. In previous versions the message just failed.
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Added missing entries for the built-in predicates current_logtalk_flag/2
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and set_logtalk_flag/2 to the Logtalk compiler built-in predicates table.
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Updated config file for Amzi! Prolog 6.1.74.
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Updated notes on patching XSB to work with Logtalk.
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2.9.3 - February 9, 2002
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New current_logtalk_flag/2 and set_logtalk_flag/2 built-in predicates.
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Updated documentation on new built-in predicates.
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Renamed SWI-Prolog config file swi330.config to swi.config.
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Renamed config file predicate lgt_default_compiler_option/2 to lgt_flag/2.
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New XSL stylesheets and shell scripts to convert Logtalk XML entity
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documenting files to PDF format using XSL Formating Objects.
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2.9.2 - January 4, 2002
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The Logtalk compiler can now print a warning when compiling source files
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that use non-ISO defined built-in predicates using a new portability/1
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compiler option. Updated the relevant sections of the user manual and the
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errors example.
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Corrected a compiler bug where the entity relation tables only recorded
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the last entry per entity relation type.
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Updated config file for CIAO 1.7#162.
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2.9.1 - December 5, 2001
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Logtalk compiler now prints a warning when redefining or replacing an
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existing entity.
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Corrected a compiler bug in the error checking code for the info/1
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and info/2 directives.
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Changed the order of object loading in the "mi" example to avoid
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suporious warning messages.
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Added a new problem ("bridge") to the "searching" example. Improved
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"performance" monitor to give correct reports on alternative solutions.
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Corrected a bug in the "water jug" state space example.
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2.9.0 - October 22, 2001
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Added config files for CIAO Prolog 1.7p115 and B-Prolog 6.0.
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Compiling and loading an entity that contains references to unknown
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entities (by default) prints a warning. Updated user and reference
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manuals.
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Rewrited all the compiler warning/error code and output messages.
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Changed compiled code functors postfixes from "_sdcl" and "_sdef" to
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"_idcl" and "_idef" (implies recompilation of all objects, protocols,
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and categories).
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Changed all occurrences and references to the term "entity_scope" to
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"scope".
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Removed some redundant productions from the Logtalk grammar.
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Updated documentation on the xml directory. Renamed some of the .xsl
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files. Added sample scripts to batch convert .xml files to .html files.
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Added a new loader utility file, all.loader, to load all library files
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loaded by the other loader files.
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Started work on documenting the Logtalk pre-processor/compiler source
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file.
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New "errors" example. Updated the "inheritance" example.
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2.8.4 - March 9, 2001
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Updated config files for BinProlog 8.0, K-Prolog 5.01, XSB 2.3, and
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Amzi! Prolog 4.103~5.0.
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New config file for Amzi! Prolog 6.1 beta.
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Corrected an incomplete entity definition in the Logtalk XML DTD.
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Rewrite the Logtalk XSLT files for improved compatibility with XSLT
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processors regarding handling of whitespace.
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A first cut of a XML Schema for the Logtalk XML documentation files
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(file xml/logtalk.xsd).
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Small improvements to the documentation.
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2.8.3 - November 21, 2000
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Corrected a bug where sending a message for a built-in method to an
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unknown object fails instead of generating the expected exception.
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Put some ocorrences of atoms public, mode, and type between ()'s to
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avoid compilation errors in BinProlog 8.0 and other Prolog compilers
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that declare these atoms as operators.
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Corrected the definition of the state space of the "Missionaires and
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Cannibals" problem in the "searching" example that resulted in some
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wrong solutions.
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2.8.2 - November 5, 2000
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New .xsl file to convert .xml files to TeXML files.
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Fixed a problem with explicit compilation options being correctly parsed
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but not processed.
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Corrected a bug regarding default init options definition for the
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points, polygons, and bricks examples. Updated category initialization
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in roots example.
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2.8.1 - October 28, 2000
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New config file for K-Prolog 5.0.
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Improved compiler error detection and reporting of invalid directives
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and clauses.
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Corrected a problem with some Prolog compilers where compiling a file
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containing syntax errors may not close the file after the errors are
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reported.
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Many small improvements to all documentation.
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Small improvements to the .xsl files and to the output of .xml files.
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2.8.0 - October 1, 2000
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I have found just a few days ago that I have uploaded to the Logtalk web
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server a development version of Logtalk 2.7.0 instead of the final one!
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To avoid confusions I decided to release a new version.
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Changed implementation of the logtalk_compile/1-2 and logtalk_load/1-2
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predicates to only accept a list of entities instead of either an entity
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or a list of entities, simplifying and improving the performance of these
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predicates. Improved error reporting for the logtalk_compile/1 and
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logtalk_load/1 predicates. Updated relevant sessions in the user and
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reference manuals.
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Simplified the implementation of the following predicates, by sharing
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the error checking code with the corresponding extended versions:
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implements_protocol/2, imports_category/2, instantiates_class/2,
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specializes_class/2, extends_protocol/2, and extends_object/2.
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Completed some missing library file dependencies documentation in some
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examples.
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New version of the QUICK_START help file. Updated tutorial.
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2.7.0 - August 24, 2000
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First release of the Logtalk standard library of objects, protocols and
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categories.
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Rewritten all examples to use the new Logtalk standard library.
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New logtalk_load/2 and logtalk_compile/2 Logtalk built-in predicates,
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accepting a list of compiler options. See the User and Reference Manuals
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for details.
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New XSLT file for viewing .xml files in Microsoft Internet Explorer 5.5
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for Windows after installing the latest Microsoft XML Parser Preview
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Release. Small improvements in all XSLT files.
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Starting with this version all config files need to provide a definition
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for the compare/3 predicate if it is not built-in in the corresponding
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Prolog compiler. Also, default Logtalk compiler options are now also set
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in the config files using the lgt_default_compiler_option/2 predicate.
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Updated config file for CIAO 1.6p1. See the configs/NOTES file for
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details.
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2.6.2 - July 4, 2000
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Improved performance and error checking for the built-in predicates
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create_object/4, create_protocol/3 and create_category/4.
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Updated config file for BinProlog 7.83.
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Many small updates to all documentation.
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New PDF versions of the documentation formated for printing (with page
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numbers, table of contents and index)are now available in both A4 and
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US letter formats.
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2.6.1 - May 5, 2000
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Modified the structure of the automatically generated XML documenting
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files to improve XSL translation performance. Added a new, more standard
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compliant, XSL file to generate HTML files and renamed the old one to
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ie5.xsl. See the xml/NOTES file for details. Corrected an error in the
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logtalk.css CSS file.
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Modified the definitions of predicates lgt_file_extension/2 and
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lgt_file_name/2 in all config files.
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Updated all the user manual sessions related to automatic documentation.
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Updated all HTML documentation for future XHTML 1.0 conformance.
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Start adding documenting directives to most examples.
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2.6.0 - April 27, 2000
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Added support for documentation of objects, protocols, and categories,
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using automatic generation of XML files.
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Added info/1 and info/2 directives for documenting objects, protocols,
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categories, and predicates. Added definition of documentation file name
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extension and default file names for the DTD and XSL files to the config
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files.
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Improved error checking for the built-in predicates create_object/4,
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create_protocol/3 and create_category/4 to also detect invalid entity
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identifiers.
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Updated the user and reference manuals to describe the new automatic
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documenting features.
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Updated all HTML documentation to conform to HTML 4.01 strict standard.
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Corrected some wrong cross-reference links and titles in the reference
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and user manuals HTML pages.
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PDF versions of the manuals and tutorial are now available in both A4
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and US letter formats.
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Corrected two errors in the searching example, one in the definition of
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the farmer problem state space and the other when backtracking over
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performance reports.
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2.5.2 - March 7, 2000
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Updated manuals to clarify some limitations of declaring and defining
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dynamic predicates inside categories and documented a way of using the
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built-in local method this/1 to access object parameters.
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Removed references to parametric categories from the Logtalk
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documentation (at runtime we can only access object parameters,
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not category parameters).
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Corrected two wrong declarations of built-in methods (forall/2 and
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retractall/1) in the Logtalk pre-processor.
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Corrected bug where predicates declared in dynamic entities may have
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a "static" instead of a "dynamic" property.
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Corrected a bug in category compilation that prevented a dynamic category
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from being abolished. Speedup predicate definition lookups for categories.
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2.5.1 - February 18, 2000
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Two new examples: birds, a bird identification expert system adopted
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(with permission) from an Amzi example, and viewpoints, a set of
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prototypes showing how to do property sharing and value sharing in
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Logtalk.
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Renamed config file yap421.config to yap430.config to match the name of
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the new YAP 4.3.0 public release (named 4.2.1 while on beta testing).
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Partial config file for Trinc Prolog R3.
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2.5.0 - December 29, 1999
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The Logtalk pre-processor now accepts arbitrary clauses and directives
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to appear in a file before an opening entity directive. The clauses and
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directives are added unchanged to the compiled file.
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Improved performance for all kinds of message sending.
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Two new examples: reflection, showing how to implement a simple
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class-based reflective system, and symdiff, showing how to use
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parametric objects to implement symbolic expression differentiation
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and simplification.
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Updated config file for the beta 8 release of SWI-Prolog 3.3.0.
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2.4.0 - December 1, 1999
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Logtalk is now an Open Source project, available under Perl's Artistic
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license.
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Two new examples: instmethods, ilustrating the use of instance defined
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methods, and classvars, showing how to implement class variables.
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Updated Logtalk grammar to explicitly allow for user-defined types
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in mode/2 directives.
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New config files for SWI-Prolog 3.3.0, SICStus Prolog 3.8 and CIAO
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Prolog 1.4p0 (incomplete).
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Updated config file for B-Prolog 4.0.
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Updated config file for GNU Prolog to use the new call_with_args()
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built-in predicate added in version 1.1.0.
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Updated config file for YAP Prolog to use the new call_with_args()
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built-in predicate added in version 4.2.1.
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2.3.1 - September 22, 1999
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Logtalk pre-processor updated to only report one warning per redefined
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Logtalk or Prolog built-in predicate.
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Changed some occurrences of atom "public" to "(public)" in
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compiler/logtalk.pl file to avoid syntax errors in Prolog compilers
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(like BinProlog) that define "public" as an operator. Also put some
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terms between ()'s to avoid syntax errors with ALS Prolog 3.1
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Update config file for ALS Prolog to work with version 3.1.
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Updated configs/NOTES file include a workaround to use Logtalk with
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XSB 2.0, some guidelines on how to write loader utility files for
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BinProlog 7.50, and a bug in ALS Prolog 3.1 that affects Logtalk.
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2.3.0 - September 12, 1999
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Metapredicate information is now stored with the other predicate
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properties, instead of being discarded after compiling the clauses of
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a metapredicate. Added predicate property metapredicate/1. It is now
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possible to assert clauses for dynamic metapredicates.
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Corrected a bug in the processing of metacalls in pseudo-object user.
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Corrected a bug in the implementation of private inheritance.
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Improved performance of protected inheritance.
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Corrected failure of processing initialization/1 and op/3 directives in
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create_object/4, create_category/4 and create_protocol/3 built-in
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predicates.
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Corrected a bug when calling private static category predicates from
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importing objects. Simplified code generated for categories.
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Rewrite code for the built-in method current_predicate/1 to avoid
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duplicated or wrong results when overriding predicate declarations
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and to ensure that all possible argument type errors are detected.
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Changed compilation of classes that do not instantiate any (meta)class
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in order to throw the correct exception when a message is sent to them.
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Changed compilation of root objects (that do not instantiate, specialize
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or extend other objects) so that calls to "super" (^^/1) fail (as they
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should) instead of generating a "predicate does not exist" error message.
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Changed implementation of "super" calls (^^/1) to avoid a potential
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endless loop problem when using these calls from the inheritance root
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object of a reflexive class-based systems.
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Pre-processor now checks for callable and object identifier errors.
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Runtime now checks for non-instantiated messages.
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Added new example (inheritance) about public, protected and private
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inheritance.
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Updated metapredicates, lo, kernel, and types examples. Most of the
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code in the last two examples is being updated to form the basis of an
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upcoming Logtalk standard library.
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Small changes in the pre-processor/runtime code for compatibility with
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ECLiPSe 4.2.2. Updated config files for this Prolog compiler.
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Rewrite some predicates in the config files for SWI-Prolog and LPA
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Mac & WIN Prologs for improved performance.
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New tutorial session about events and monitors.
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Updated documentation to match the changes made in this version.
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2.2.0 - July 10, 1999
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Implemented public, protected and private object inheritance, protocol
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implementation and category importation.
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New Logtalk built-in predicates instantiates_class/3, extends_object/3,
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extends_protocol/3, specializes_class/3, imports_category/3 and
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implements_protocol/3. The third argument returns the relation scope.
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|
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Pre-processor now checks most directive errors.
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|
|
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Changed ^^/1 (super call) implementation to only allow the use of a
|
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single predicate call for argument and to retain the original sender
|
|
of the message (see the updated sicstus example).
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|
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Fixed bug that prevented directives with a variable number of arguments
|
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(like dynamic(), public(), uses(), ...) being recognized.
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|
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Changed definition of predicate read_term/3 in the configs files of Amzi!,
|
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Aquarius, Arity, Eclipse, IC, K, LPA Mac&WIN, Master and XSB to always
|
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instantiates the singleton variables list to the empty list. Needed to
|
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prevent backtracking problems in logtalk_load/1 and logtalk_compile/1
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|
predicates.
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|
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Removed choice-point in processing metacalls in predicate definitions.
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|
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A banner with the Logtalk version is printed after loading the runtime/
|
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pre-processor.
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|
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Removed variables example. The category attributes is now part of the
|
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kernel example. Corrected some warmless syntax errors in directives in
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kernel/attributes.lgt, kernel/monitor.lgt and miscellaneous/queens.lgt.
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|
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Changed name of blocks example to bricks and object "block" to "brick"
|
|
in order to avoid problems with some Prolog compilers that use the atom
|
|
"block" for operators or built-in predicates.
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|
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|
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2.1.0 - May 11, 1999
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|
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Fixed some bugs in the definition of the pseudo-object user when sending
|
|
the message predicate_property/2.
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|
|
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Renamed config file for Calypso to GNU Prolog.
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|
|
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New config file for LPA WinProlog 4.0.
|
|
|
|
Corrected the omission in the documentation of the Logtalk grammar of the
|
|
built_in entity property.
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|
|
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New tutorial pages about building reflective class-based systems.
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|
|
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Modified pre-processor to compile throw/1 as a control structure to
|
|
ensure compatibility with the GNU-Prolog compiler.
|
|
|
|
Modified pre-processor to ensure compatibility with Prolog compilers that
|
|
use immediate update semantics instead of the ISO logical database update.
|
|
|
|
Improved simplification of compiled object and category clauses.
|
|
|
|
Rewrite and clean up pre-processor code for better compiler performance.
|
|
|
|
Several updates to the examples files.
|
|
|
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Changed all example loader files to wrap the call to logtalk_load/1 inside
|
|
an initialization/1 directive for ISO standard compliance.
|
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|
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|
|
2.0 GM - February 9, 1999
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|
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Removed some redundant choice-points that are being created when
|
|
compiling Logtalk entities.
|
|
|
|
Small compilation speed optimizations.
|
|
|
|
Logtalk compiled files now contain the declarations for the message
|
|
sending operators to ensure compatibility with some Prolog compilers.
|
|
|
|
Changed the way Logtalk pre-processor writes directives to ensure
|
|
compatibility with some Prolog compilers. Corrected a bug in the
|
|
processing of the op/3 directive.
|
|
|
|
Updated PrologII+ config file for version 4.5.
|
|
|
|
Changed the definitions of catch/3 and throw/1 in the config files for
|
|
LPA Prolog compilers.
|
|
|
|
New config file for MasterProlog 4.1; removed config file for the
|
|
old BIM Prolog 4.0.
|
|
|
|
Corrected an error in the config file for OpenProlog in the definiton
|
|
of the write_term/3 predicate.
|
|
|
|
Added a safer definition for write_term/3 predicate in the config
|
|
files for Amzi, Aquarius, Arity, Eclipse, IC, K, LPA Mac, LPA Win,
|
|
and XSB Prolog compilers.
|
|
|
|
Added a QUICK_START file.
|
|
|
|
|
|
2.0 Beta 3 - February 1, 1999
|
|
|
|
Closed some encapsulation holes in the implementation of super calls.
|
|
|
|
Changed Logtalk pre-processor to use write_term/3 instead of write/2 and
|
|
writeq/2 to workaround some compatibility problems with some Prolog
|
|
compilers.
|
|
|
|
Changed mode operators priority and type to be compatible with the ISO
|
|
standard.
|
|
|
|
Modified definition of predicate read_term/3 in the config file for Amzi
|
|
compiler to return the atom end_of_file instead of '!EOF' at the end of
|
|
a file (this prevented Logtalk to complete compilation any file under
|
|
this compiler). Improved detection of built-in predicates while compiling.
|
|
|
|
Removed config file for wamcc. This compiler have been replaced by
|
|
Calypso (developed by the same author).
|
|
|
|
Updated K-Prolog config file for version 4.50.
|
|
|
|
Improved documentation of template config file.
|
|
|
|
Added SCRIPT files to the kernel and types examples.
|
|
|
|
Updated Tutorial and User and Reference Manuals.
|
|
|
|
New end user license.
|
|
|
|
|
|
2.0 Beta 2 - November 16, 1998
|
|
|
|
Built-ins logtalk_compile/1 and logtalk_load/1 updated to match
|
|
the documentation regarding thrown errors and to accept a list of
|
|
entities to compile/load.
|
|
|
|
Modified the examples loader utility files to make only a call to
|
|
logtalk_load/1 by using a list of entities. This should make it easy to
|
|
modify these files for compilers that don't support arbritrary queries
|
|
in a file.
|
|
|
|
Logtalk runtime no longer tries to catch some of the errors thrown
|
|
by ::/2.
|
|
|
|
Added to all config files a Logtalk predicate to check if a file
|
|
exists in the current working directory (used by the logtalk_load/1
|
|
and logtalk_compile/1 Logtalk built-in predicates).
|
|
|
|
New configs files for the K-Prolog 4.14 and Calypso 1.0b6 Prolog
|
|
compilers.
|
|
|
|
Completed the config file for Open Prolog 1.03d38 (with the exception
|
|
of lgt_current_date/3 that still have a dummy definition).
|
|
|
|
Added a missing definition for Logtalk predicate forall/2 to the config
|
|
file for Prolog II+ 4.4.
|
|
|
|
Modified Logtalk pre-processor/runtime to avoid syntax errors when
|
|
running on Open Prolog or Calypso and to remove some redundant
|
|
choice-points that are being created when compiling categories and
|
|
protocols.
|
|
|
|
Modified some examples that use operators to avoid syntax errors in
|
|
some Prolog compilers.
|
|
|
|
Modified the implementation of the built-in method
|
|
predicate_property/2 to avoid duplicate answers and to throw an
|
|
instantiation error if the first argument is not bound.
|
|
|
|
Modified definition of the pseudo-object user to hide Logtalk pre-
|
|
processor predicates from the current_predicate/1 built-in method and
|
|
to ensure that the predicate_property/2 built-in method returns
|
|
Logtalk defined predicate properties for built-in Logtalk and Prolog
|
|
predicates.
|
|
|
|
Modified Prolog code generated by the pre-processor to further minimize
|
|
possible conflicts with user defined predicates.
|
|
|
|
Added a lgt_predicate_property/2 predicate to the config files to
|
|
improve Logtalk portability.
|
|
|
|
Updated Tutorial and User and Reference Manuals.
|
|
|
|
|
|
2.0 Beta 1 - October 18, 1998
|
|
|
|
Added basic support for implementation multi-inheritance.
|
|
|
|
Logtalk pre-processor updated to try to detect misspelt local
|
|
predicate calls.
|
|
|
|
First public beta.
|
|
|
|
|
|
2.0 Alpha 1 - July, 1998
|
|
|
|
First release for registered users.
|