Added flags library
This commit is contained in:
Theofrastos Mantadelis
parent
b73a93f26a
commit
73918e78aa
@ -78,6 +78,7 @@ PROGRAMS= \
|
||||
$(srcdir)/lam_mpi.yap \
|
||||
$(srcdir)/ypp.yap \
|
||||
$(srcdir)/c_alarms.yap \
|
||||
$(srcdir)/flags.yap \
|
||||
$(srcdir)/block_diagram.yap
|
||||
|
||||
MYDDAS_PROGRAMS= $(srcdir)/MYDDAS/myddas.ypp \
|
||||
|
||||
561
library/flags.yap
Normal file
561
library/flags.yap
Normal file
@ -0,0 +1,561 @@
|
||||
%%% -*- Mode: Prolog; -*-
|
||||
|
||||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
%
|
||||
% Flags was developed at Katholieke Universiteit Leuven
|
||||
%
|
||||
% Copyright 2010
|
||||
% Katholieke Universiteit Leuven
|
||||
%
|
||||
% Contributions to this file:
|
||||
% Author: Theofrastos Mantadelis
|
||||
% Sugestions: Bernd Gutmann, Paulo Moura
|
||||
% Version: 0.1
|
||||
% Date: 19/11/2010
|
||||
%
|
||||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
%
|
||||
% 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.
|
||||
%
|
||||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
|
||||
|
||||
:- module(flags, [flag_define/2,
|
||||
flag_define/5,
|
||||
flag_define/7,
|
||||
flag_set/2,
|
||||
flag_set/3,
|
||||
flag_unsafe_set/2,
|
||||
flag_get/2,
|
||||
flags_reset/0,
|
||||
flags_reset/1,
|
||||
flags_save/1,
|
||||
flags_load/1,
|
||||
flag_groups/1,
|
||||
flag_group_chk/1,
|
||||
flag_help/0,
|
||||
flags_print/0,
|
||||
defined_flag/7]).
|
||||
|
||||
:- use_module(library(lists), [append/3, memberchk/2, member/2]).
|
||||
|
||||
:- style_check(all).
|
||||
:- yap_flag(unknown, error).
|
||||
|
||||
:- dynamic(['$defined_flag$'/7, '$store_flag_value$'/2]).
|
||||
:- meta_predicate(flag_define(+, +, +, ?, ?, ?, :)).
|
||||
:- meta_predicate(flag_define(+, :)).
|
||||
:- meta_predicate(validate(+, :, ?, +)).
|
||||
:- multifile(flags_type_definition/3).
|
||||
|
||||
flag_define(FlagName, InputOptions):-
|
||||
strip_module(InputOptions, Module, UserOptions),
|
||||
Defaults = [flag_group(general), flag_type(nonvar), default_value(true), description(FlagName), access(read_write), handler(true)],
|
||||
append(UserOptions, Defaults, Options),
|
||||
memberchk(flag_group(FlagGroup), Options),
|
||||
memberchk(flag_type(FlagType), Options),
|
||||
memberchk(default_value(DefaultValue), Options),
|
||||
memberchk(description(Description), Options),
|
||||
memberchk(access(Access), Options),
|
||||
memberchk(handler(Handler), Options),
|
||||
flag_define(FlagName, FlagGroup, FlagType, DefaultValue, Description, Access, Module:Handler).
|
||||
|
||||
flag_define(FlagName, FlagGroup, FlagType, DefaultValue, Description):-
|
||||
flag_define(FlagName, FlagGroup, FlagType, DefaultValue, Description, read_write, true).
|
||||
|
||||
flag_define(FlagName, FlagGroup, FlagType, DefaultValue, Description, Access, MHandler):-
|
||||
strip_module(MHandler, Module, Handler),
|
||||
nonvar(FlagName),
|
||||
nonvar(FlagGroup),
|
||||
nonvar(FlagType),
|
||||
nonvar(Access),
|
||||
nonvar(Handler), !,
|
||||
(\+ atom(FlagName) ->
|
||||
throw(error(type_error(atom, FlagName), message('Flag name needs to be an atom.', flag_define(FlagName, FlagGroup, FlagType, DefaultValue, Description, Access, Module:Handler))))
|
||||
; \+ atom(FlagGroup) ->
|
||||
throw(error(type_error(atom, FlagGroup), message('Flag group needs to be an atom.', flag_define(FlagName, FlagGroup, FlagType, DefaultValue, Description, Access, Module:Handler))))
|
||||
; \+ flag_type(FlagType) ->
|
||||
throw(error(domain_error(flag_type, FlagType), message('Unknown flag type.', flag_define(FlagName, FlagGroup, FlagType, DefaultValue, Description, Module:Handler))))
|
||||
; \+ validate_type(FlagType) ->
|
||||
throw(error(evaluation_error(type_validation), message('Validation of flag type failed, check custom domain.', flag_define(FlagName, FlagGroup, FlagType, DefaultValue, Description, Access, Module:Handler))))
|
||||
; '$defined_flag$'(FlagName, _FlagGroup, _FlagType, _DefaultValue, _Description, _Access, _Handler) ->
|
||||
throw(error(permission_error(create, flag, FlagName), message('Re-defining a flag is not allowed.', flag_define(FlagName, FlagGroup, FlagType, DefaultValue, Description, Access, Module:Handler))))
|
||||
; \+ memberchk(Access, [read_write, read_only, hidden, hidden_read_only]),
|
||||
throw(error(domain_error(access, Access), message('Wrong access attribute, available are: read_write, read_only, hidden, hidden_read_only.', flag_define(FlagName, FlagGroup, FlagType, DefaultValue, Description, Access, Module:Handler))))
|
||||
; \+ callable(Handler) ->
|
||||
throw(error(type_error(callable, Handler), message('Flag handler needs to be callable.', flag_define(FlagName, FlagGroup, FlagType, DefaultValue, Description, Access, Module:Handler))))
|
||||
;
|
||||
validate(FlagType, Module:Handler, DefaultValue, FlagName),
|
||||
assertz('$defined_flag$'(FlagName, FlagGroup, FlagType, DefaultValue, Description, Access, Module:Handler)),
|
||||
assertz('$store_flag_value$'(FlagName, DefaultValue)),
|
||||
(Handler == true ->
|
||||
true
|
||||
;
|
||||
call(Module:Handler, stored, DefaultValue)
|
||||
)
|
||||
).
|
||||
flag_define(FlagName, FlagGroup, FlagType, DefaultValue, Description, Access, Handler):-
|
||||
throw(error(instantiation_error, message('Flag name, group, type, access and handler need to be instantiated.', flag_define(FlagName, FlagGroup, FlagType, DefaultValue, Description, Access, Handler)))).
|
||||
|
||||
flag_groups(FlagGroups):-
|
||||
all(FlagGroup, ('$defined_flag$'(_FlagName, FlagGroup, _FlagType, _DefaultValue, _Description, Access, _Handler), Access \== hidden, Access \== hidden_read_only), FlagGroups).
|
||||
|
||||
flag_group_chk(FlagGroup):-
|
||||
nonvar(FlagGroup),
|
||||
'$defined_flag$'(_FlagName, FlagGroup, _FlagType, _DefaultValue, _Description, _Access, _Handler), !.
|
||||
|
||||
flag_type(Type):-
|
||||
flags_type_definition(Type, _, _).
|
||||
|
||||
% flags_type_definition(TypeName, TypeHandler, TypeValidator).
|
||||
flags_type_definition(nonvar, nonvar, true).
|
||||
flags_type_definition(atom, atom, true).
|
||||
flags_type_definition(atomic, atomic, true).
|
||||
flags_type_definition(integer, integer, true).
|
||||
flags_type_definition(float, float, true).
|
||||
flags_type_definition(number, number, true).
|
||||
flags_type_definition(ground, ground, true).
|
||||
flags_type_definition(compound, compound, true).
|
||||
flags_type_definition(is_list, is_list, true).
|
||||
flags_type_definition(callable, callable, true).
|
||||
flags_type_definition(in_interval(Type, Interval), in_interval(Type, Interval), in_interval(Type, Interval)).
|
||||
flags_type_definition(integer_in_interval(Interval), in_interval(integer, Interval), in_interval(integer, Interval)).
|
||||
flags_type_definition(positive_integer, in_interval(integer, (0, (+inf))), true).
|
||||
flags_type_definition(non_negative_integer, in_interval(integer, ([0], (+inf))), true).
|
||||
flags_type_definition(negative_integer, in_interval(integer, ((-inf), 0)), true).
|
||||
flags_type_definition(float_in_interval(Interval), in_interval(float, Interval), in_interval(float, Interval)).
|
||||
flags_type_definition(positive_float, in_interval(float, (0.0, (+inf))), true).
|
||||
flags_type_definition(non_negative_float, in_interval(float, ([0.0], (+inf))), true).
|
||||
flags_type_definition(negative_float, in_interval(float, ((-inf), 0.0)), true).
|
||||
flags_type_definition(number_in_interval(Interval), in_interval(number, Interval), in_interval(number, Interval)).
|
||||
flags_type_definition(positive_number, in_interval(number, (0.0, (+inf))), true).
|
||||
flags_type_definition(non_negative_number, in_interval(number, ([0.0], (+inf))), true).
|
||||
flags_type_definition(negative_number, in_interval(number, ((-inf), 0.0)), true).
|
||||
flags_type_definition(in_domain(Domain), in_domain(Domain), in_domain(Domain)).
|
||||
flags_type_definition(boolean, in_domain([true, false]), true).
|
||||
flags_type_definition(switch, in_domain([on, off]), true).
|
||||
|
||||
in_domain(Domain):-
|
||||
ground(Domain),
|
||||
is_list(Domain).
|
||||
in_domain(Domain, Value):-
|
||||
ground(Value),
|
||||
memberchk(Value, Domain).
|
||||
|
||||
in_interval(Type, Interval):-
|
||||
is_list(Interval), !,
|
||||
Interval \== [],
|
||||
in_interval_conj(Type, Interval).
|
||||
in_interval(Type, Interval):-
|
||||
in_interval_single(Type, Interval).
|
||||
|
||||
in_interval_conj(_Type, []).
|
||||
in_interval_conj(Type, [Interval|Rest]):-
|
||||
in_interval_single(Type, Interval),
|
||||
in_interval_conj(Type, Rest).
|
||||
|
||||
in_interval_single(Type, ([Min], [Max])):-
|
||||
!, call(Type, Min),
|
||||
call(Type, Max),
|
||||
Min =< Max.
|
||||
|
||||
in_interval_single(Type, ([Min], Max)):-
|
||||
!, call(Type, Min),
|
||||
call(Type, Max),
|
||||
Min < Max.
|
||||
|
||||
in_interval_single(Type, (Min, [Max])):-
|
||||
!, call(Type, Min),
|
||||
call(Type, Max),
|
||||
Min < Max.
|
||||
|
||||
in_interval_single(Type, (Min, Max)):-
|
||||
call(Type, Min),
|
||||
call(Type, Max),
|
||||
Min < Max,
|
||||
Max - Min > 0.0.
|
||||
|
||||
in_interval(Type, [Interval|_Rest], Value):-
|
||||
in_interval(Type, Interval, Value), !.
|
||||
in_interval(Type, [_Interval|Rest], Value):-
|
||||
in_interval(Type, Rest, Value).
|
||||
|
||||
in_interval(Type, ([Min], [Max]), Value):-
|
||||
!, call(Type, Value),
|
||||
Value >= Min,
|
||||
Value =< Max.
|
||||
|
||||
in_interval(Type, ([Min], Max), Value):-
|
||||
!, call(Type, Value),
|
||||
Value >= Min,
|
||||
Value < Max.
|
||||
|
||||
in_interval(Type, (Min, [Max]), Value):-
|
||||
!, call(Type, Value),
|
||||
Value > Min,
|
||||
Value =< Max.
|
||||
|
||||
in_interval(Type, (Min, Max), Value):-
|
||||
call(Type, Value),
|
||||
Value > Min,
|
||||
Value < Max.
|
||||
|
||||
validate_type(Type):-
|
||||
flags_type_definition(Type, _, TypeValidater),
|
||||
call(TypeValidater).
|
||||
|
||||
validate(FlagType, Handler, Value, FlagName):-
|
||||
strip_module(Handler, _Module, true),
|
||||
!, flags_type_definition(FlagType, FlagValidator, _),
|
||||
(call(FlagValidator, Value) ->
|
||||
true
|
||||
;
|
||||
throw(error(validation_error(FlagType, Value), message('Validation of value fails.', validate(FlagType, Value, FlagName))))
|
||||
).
|
||||
validate(FlagType, Handler, Value, FlagName):-
|
||||
flags_type_definition(FlagType, FlagValidator, _),
|
||||
((call(Handler, validating, Value), (call(FlagValidator, Value); call(Handler, validate, Value))) ->
|
||||
call(Handler, validated, Value)
|
||||
;
|
||||
throw(error(validation_error(FlagType, Value), message('Validation of value fails.', validate(FlagType, Handler, Value, FlagName))))
|
||||
).
|
||||
|
||||
flag_set(FlagName, FlagValue):-
|
||||
flag_set(FlagName, _OldValue, FlagValue).
|
||||
flag_set(FlagName, OldValue, FlagValue):-
|
||||
atom(FlagName),
|
||||
'$defined_flag$'(FlagName, _FlagGroup, FlagType, _DefaultValue, _Description, Access, Module:Handler), !,
|
||||
(Access \== read_only, Access \== hidden_read_only ->
|
||||
validate(FlagType, Module:Handler, FlagValue, FlagName),
|
||||
retract('$store_flag_value$'(FlagName, OldValue)),
|
||||
assertz('$store_flag_value$'(FlagName, FlagValue)),
|
||||
(Handler == true ->
|
||||
true
|
||||
;
|
||||
call(Module:Handler, stored, FlagValue)
|
||||
)
|
||||
;
|
||||
throw(error(permission_error(set, flag, FlagName), message('Setting the flag value is not allowed.',flag_set(FlagName, OldValue, FlagValue))))
|
||||
).
|
||||
flag_set(FlagName, OldValue, FlagValue):-
|
||||
throw(error(existence_error(flag, FlagName), message('The flag is not defined.', flag_set(FlagName, OldValue, FlagValue)))).
|
||||
|
||||
flag_unsafe_set(FlagName, FlagValue):-
|
||||
retract('$store_flag_value$'(FlagName, _)),
|
||||
assertz('$store_flag_value$'(FlagName, FlagValue)).
|
||||
|
||||
flag_get(FlagName, FlagValue):-
|
||||
'$store_flag_value$'(FlagName, FlagValue).
|
||||
flag_get(FlagName, FlagValue):-
|
||||
\+ '$store_flag_value$'(FlagName, _),
|
||||
throw(error(existence_error(flag, FlagName), message('The flag is not defined.', flag_get(FlagName, FlagValue)))).
|
||||
|
||||
flags_reset:-
|
||||
retractall('$store_flag_value$'(_, _)),
|
||||
'$defined_flag$'(FlagName, _FlagGroup, _FlagType, DefaultValue, _Description, _Access, Module:Handler),
|
||||
assertz('$store_flag_value$'(FlagName, DefaultValue)),
|
||||
(Handler == true ->
|
||||
true
|
||||
;
|
||||
call(Module:Handler, stored, DefaultValue)
|
||||
),
|
||||
fail.
|
||||
flags_reset.
|
||||
|
||||
flags_reset(FlagGroup):-
|
||||
'$defined_flag$'(FlagName, FlagGroup, _FlagType, DefaultValue, _Description, _Access, Module:Handler),
|
||||
retractall('$store_flag_value$'(FlagName, _)),
|
||||
assertz('$store_flag_value$'(FlagName, DefaultValue)),
|
||||
(Handler == true ->
|
||||
true
|
||||
;
|
||||
call(Module:Handler, stored, DefaultValue)
|
||||
),
|
||||
fail.
|
||||
flags_reset(_).
|
||||
|
||||
flags_save(FileName):-
|
||||
tell(FileName),
|
||||
catch(('$store_flag_value$'(FlagName, Value),
|
||||
write_canonical('$store_flag_value$'(FlagName, Value)),
|
||||
write('.'), nl),
|
||||
Exception, clean_and_throw(told, Exception)),
|
||||
fail.
|
||||
flags_save(_FileName):-
|
||||
told.
|
||||
|
||||
flags_load(FileName):-
|
||||
see(FileName),
|
||||
catch((read('$store_flag_value$'(FlagName, Value)),
|
||||
flag_set(FlagName, Value)),
|
||||
Exception, clean_and_throw(seen, Exception)),
|
||||
fail.
|
||||
flags_load(_FileName):-
|
||||
seen.
|
||||
|
||||
clean_and_throw(Action, Exception):-
|
||||
Action,
|
||||
throw(Exception).
|
||||
|
||||
flag_help:-
|
||||
format('This is a short tutorial for the flags library.~nExported predicates:~n'),
|
||||
format(' flag_define/5 : defines a new flag without a handler~n'),
|
||||
format(' flag_define(FlagName, FlagGroup, FlagType, DefaultValue, Description)~n'),
|
||||
format(' flag_define/6 : defines a new flag with a handler~n'),
|
||||
format(' flag_define(FlagName, FlagGroup, FlagType, DefaultValue, Description, Handler)~n'),
|
||||
format(' FlagName : the name of the flag~n'),
|
||||
format(' FlagGroup : the name of the flag group~n'),
|
||||
format(' FlagType : the type of the flag available types are:~n'),
|
||||
flag_help_types,
|
||||
format(' DefaultValue : the default value for the flag~n'),
|
||||
format(' Description : a flag description~n'),
|
||||
format(' Handler : a handler~n'),
|
||||
flags:flag_help_handler,
|
||||
format(' flag_groups/1 : returns all the flag groups in a list~n'),
|
||||
format(' flag_group_chk/1 : checks if a group exists~n'),
|
||||
format(' flag_set/2 : sets the value of a flag~n'),
|
||||
format(' flag_get/2 : gets the value of a flag~n'),
|
||||
format(' flag_store/2 : sets the value of a flag ignoring all tests and handlers~n'),
|
||||
format(' flag_reset/0 : resets all flags to their default value~n'),
|
||||
format(' flag_reset/1 : resets all flags of a group to their default value~n'),
|
||||
format(' flag_help/0 : this screen~n'),
|
||||
format(' flags_print/0 : shows the current flags/values~n').
|
||||
flag_help_types:-
|
||||
flag_type(FlagType),
|
||||
format(' ~w~n', [FlagType]),
|
||||
fail.
|
||||
flag_help_types.
|
||||
|
||||
flag_help_handler:-
|
||||
format(' Handler important notes:~n'),
|
||||
format(' Conjuction: external_handler(validating, Value):-...~n'),
|
||||
format(' Disjunction: external_handler(validate, Value):-...~n'),
|
||||
format(' After: external_handler(validated, Value):-...~n'),
|
||||
format(' After set: external_handler(stored, Value):-...~n'),
|
||||
format(' this is implemented as (validating,(original;validated))~n'),
|
||||
format(' validating|original|validate|result~n'),
|
||||
format(' true | true | true | true~n'),
|
||||
format(' true | true | fail | true~n'),
|
||||
format(' true | fail | true | true~n'),
|
||||
format(' true | fail | fail | fail~n'),
|
||||
format(' fail | true | true | fail~n'),
|
||||
format(' fail | true | fail | fail~n'),
|
||||
format(' fail | fail | true | fail~n'),
|
||||
format(' fail | fail | fail | fail~n'),
|
||||
format(' Default behaviour is validating->true, validate->fail~n'),
|
||||
format(' To completly replace original set validate->true~n'),
|
||||
format(' To add new values to original set validating->true~n'),
|
||||
format(' To remove values from original set validate->fail~n'),
|
||||
format(' Example definition with a handler:~n'),
|
||||
format(' flag_define(myflag, mygroup, in_interval(integer, [(-5, 5),([15],[25])]), 0, description, my_handler).~n'),
|
||||
format(' my_handler(validate, Value):-Value is 10.~n'),
|
||||
format(' my_handler(validating, Value).~n'),
|
||||
format(' my_handler(validated, Value).~n'),
|
||||
format(' my_handler(stored, Value).~n'),
|
||||
format(' This has defined a flag that accepts integers (-5,5)v[15,25].~n'),
|
||||
format(' The handler adds the value 10 in those.~n').
|
||||
|
||||
flags_print:-
|
||||
flag_groups(Groups),
|
||||
forall(member(Group, Groups), flags_print(Group)).
|
||||
flags_print(Group):-
|
||||
format(' ~w:~n~w~38+ ~w~19+ ~w~10+ ~w~10+~n', [Group, 'Description', 'Domain', 'Flag', 'Value']),
|
||||
fail.
|
||||
flags_print(FlagGroup):-
|
||||
'$defined_flag$'(FlagName, FlagGroup, FlagType, _DefaultValue, Description, Access, _Handler),
|
||||
Access \== hidden, Access \== hidden_read_only,
|
||||
flag_get(FlagName, Value),
|
||||
format('~w~38+ ~w~19+ ~w~10+ ~q~10+~n', [Description, FlagType, FlagName, Value]),
|
||||
fail.
|
||||
flags_print(_).
|
||||
|
||||
defined_flag(FlagName, FlagGroup, FlagType, DefaultValue, Description, Access, Handler):-
|
||||
'$defined_flag$'(FlagName, FlagGroup, FlagType, DefaultValue, Description, Access, Handler),
|
||||
Access \== hidden, Access \== hidden_read_only.
|
||||
defined_flag(FlagName, FlagGroup, FlagType, DefaultValue, Description, Access, Handler):-
|
||||
nonvar(FlagName), nonvar(FlagGroup),
|
||||
'$defined_flag$'(FlagName, FlagGroup, FlagType, DefaultValue, Description, Access, Handler).
|
||||
|
||||
|
||||
Reference in New Issue
Block a user