Added flags library
This commit is contained in:
Theofrastos Mantadelis
parent
b73a93f26a
commit
73918e78aa
@ -78,6 +78,7 @@ PROGRAMS= \
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$(srcdir)/lam_mpi.yap \
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$(srcdir)/lam_mpi.yap \
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$(srcdir)/ypp.yap \
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$(srcdir)/ypp.yap \
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$(srcdir)/c_alarms.yap \
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$(srcdir)/c_alarms.yap \
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$(srcdir)/flags.yap \
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$(srcdir)/block_diagram.yap
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$(srcdir)/block_diagram.yap
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MYDDAS_PROGRAMS= $(srcdir)/MYDDAS/myddas.ypp \
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MYDDAS_PROGRAMS= $(srcdir)/MYDDAS/myddas.ypp \
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561
library/flags.yap
Normal file
561
library/flags.yap
Normal file
@ -0,0 +1,561 @@
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%%% -*- Mode: Prolog; -*-
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% Flags was developed at Katholieke Universiteit Leuven
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%
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% Copyright 2010
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% Katholieke Universiteit Leuven
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%
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% Contributions to this file:
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% Author: Theofrastos Mantadelis
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% Sugestions: Bernd Gutmann, Paulo Moura
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% Version: 0.1
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% Date: 19/11/2010
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%
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% Artistic License 2.0
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%
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% Copyright (c) 2000-2006, The Perl Foundation.
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%
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% Everyone is permitted to copy and distribute verbatim copies of this
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% license document, but changing it is not allowed. Preamble
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%
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% This license establishes the terms under which a given free software
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% Package may be copied, modified, distributed, and/or
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% redistributed. The intent is that the Copyright Holder maintains some
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% artistic control over the development of that Package while still
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% keeping the Package available as open source and free software.
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% You are always permitted to make arrangements wholly outside of this
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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:- module(flags, [flag_define/2,
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flag_define/5,
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flag_define/7,
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flag_set/2,
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flag_set/3,
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flag_unsafe_set/2,
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flag_get/2,
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flags_reset/0,
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flags_reset/1,
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flags_save/1,
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flags_load/1,
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flag_groups/1,
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flag_group_chk/1,
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flag_help/0,
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flags_print/0,
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defined_flag/7]).
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:- use_module(library(lists), [append/3, memberchk/2, member/2]).
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:- style_check(all).
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:- yap_flag(unknown, error).
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:- dynamic(['$defined_flag$'/7, '$store_flag_value$'/2]).
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:- meta_predicate(flag_define(+, +, +, ?, ?, ?, :)).
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:- meta_predicate(flag_define(+, :)).
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:- meta_predicate(validate(+, :, ?, +)).
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:- multifile(flags_type_definition/3).
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flag_define(FlagName, InputOptions):-
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strip_module(InputOptions, Module, UserOptions),
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Defaults = [flag_group(general), flag_type(nonvar), default_value(true), description(FlagName), access(read_write), handler(true)],
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append(UserOptions, Defaults, Options),
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memberchk(flag_group(FlagGroup), Options),
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memberchk(flag_type(FlagType), Options),
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memberchk(default_value(DefaultValue), Options),
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memberchk(description(Description), Options),
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memberchk(access(Access), Options),
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memberchk(handler(Handler), Options),
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flag_define(FlagName, FlagGroup, FlagType, DefaultValue, Description, Access, Module:Handler).
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flag_define(FlagName, FlagGroup, FlagType, DefaultValue, Description):-
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flag_define(FlagName, FlagGroup, FlagType, DefaultValue, Description, read_write, true).
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flag_define(FlagName, FlagGroup, FlagType, DefaultValue, Description, Access, MHandler):-
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strip_module(MHandler, Module, Handler),
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nonvar(FlagName),
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nonvar(FlagGroup),
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nonvar(FlagType),
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nonvar(Access),
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nonvar(Handler), !,
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(\+ atom(FlagName) ->
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throw(error(type_error(atom, FlagName), message('Flag name needs to be an atom.', flag_define(FlagName, FlagGroup, FlagType, DefaultValue, Description, Access, Module:Handler))))
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; \+ atom(FlagGroup) ->
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throw(error(type_error(atom, FlagGroup), message('Flag group needs to be an atom.', flag_define(FlagName, FlagGroup, FlagType, DefaultValue, Description, Access, Module:Handler))))
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; \+ flag_type(FlagType) ->
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throw(error(domain_error(flag_type, FlagType), message('Unknown flag type.', flag_define(FlagName, FlagGroup, FlagType, DefaultValue, Description, Module:Handler))))
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; \+ validate_type(FlagType) ->
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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))))
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; '$defined_flag$'(FlagName, _FlagGroup, _FlagType, _DefaultValue, _Description, _Access, _Handler) ->
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throw(error(permission_error(create, flag, FlagName), message('Re-defining a flag is not allowed.', flag_define(FlagName, FlagGroup, FlagType, DefaultValue, Description, Access, Module:Handler))))
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; \+ memberchk(Access, [read_write, read_only, hidden, hidden_read_only]),
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throw(error(domain_error(access, Access), message('Wrong access attribute, available are: read_write, read_only, hidden, hidden_read_only.', flag_define(FlagName, FlagGroup, FlagType, DefaultValue, Description, Access, Module:Handler))))
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; \+ callable(Handler) ->
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throw(error(type_error(callable, Handler), message('Flag handler needs to be callable.', flag_define(FlagName, FlagGroup, FlagType, DefaultValue, Description, Access, Module:Handler))))
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;
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validate(FlagType, Module:Handler, DefaultValue, FlagName),
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assertz('$defined_flag$'(FlagName, FlagGroup, FlagType, DefaultValue, Description, Access, Module:Handler)),
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assertz('$store_flag_value$'(FlagName, DefaultValue)),
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(Handler == true ->
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true
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;
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call(Module:Handler, stored, DefaultValue)
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)
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).
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flag_define(FlagName, FlagGroup, FlagType, DefaultValue, Description, Access, Handler):-
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throw(error(instantiation_error, message('Flag name, group, type, access and handler need to be instantiated.', flag_define(FlagName, FlagGroup, FlagType, DefaultValue, Description, Access, Handler)))).
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flag_groups(FlagGroups):-
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all(FlagGroup, ('$defined_flag$'(_FlagName, FlagGroup, _FlagType, _DefaultValue, _Description, Access, _Handler), Access \== hidden, Access \== hidden_read_only), FlagGroups).
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flag_group_chk(FlagGroup):-
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nonvar(FlagGroup),
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'$defined_flag$'(_FlagName, FlagGroup, _FlagType, _DefaultValue, _Description, _Access, _Handler), !.
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flag_type(Type):-
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flags_type_definition(Type, _, _).
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% flags_type_definition(TypeName, TypeHandler, TypeValidator).
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flags_type_definition(nonvar, nonvar, true).
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flags_type_definition(atom, atom, true).
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flags_type_definition(atomic, atomic, true).
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flags_type_definition(integer, integer, true).
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flags_type_definition(float, float, true).
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flags_type_definition(number, number, true).
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flags_type_definition(ground, ground, true).
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flags_type_definition(compound, compound, true).
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flags_type_definition(is_list, is_list, true).
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flags_type_definition(callable, callable, true).
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flags_type_definition(in_interval(Type, Interval), in_interval(Type, Interval), in_interval(Type, Interval)).
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flags_type_definition(integer_in_interval(Interval), in_interval(integer, Interval), in_interval(integer, Interval)).
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flags_type_definition(positive_integer, in_interval(integer, (0, (+inf))), true).
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flags_type_definition(non_negative_integer, in_interval(integer, ([0], (+inf))), true).
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flags_type_definition(negative_integer, in_interval(integer, ((-inf), 0)), true).
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flags_type_definition(float_in_interval(Interval), in_interval(float, Interval), in_interval(float, Interval)).
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flags_type_definition(positive_float, in_interval(float, (0.0, (+inf))), true).
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flags_type_definition(non_negative_float, in_interval(float, ([0.0], (+inf))), true).
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flags_type_definition(negative_float, in_interval(float, ((-inf), 0.0)), true).
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flags_type_definition(number_in_interval(Interval), in_interval(number, Interval), in_interval(number, Interval)).
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flags_type_definition(positive_number, in_interval(number, (0.0, (+inf))), true).
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flags_type_definition(non_negative_number, in_interval(number, ([0.0], (+inf))), true).
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||||||
|
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