%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % Logtalk - Object oriented extension to Prolog % Release 2.8.4 % % Copyright (c) 1998-2001 Paulo Moura. All Rights Reserved. % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % operators % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % message sending operators :- op(600, xfy, ::). % send to object :- op(600, fy, ::). % send to self :- op(600, fx, ^^). % super call % mode operators :- op(200, fy, +). % input argument (instantiated) :- op(200, fy, ?). % input/output argument :- op(200, fy, @). % input argument (not modified by the call) :- op(200, fy, -). % output argument (not instantiated) %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % runtime directives % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % defined events and monitors :- dynamic(lgt_before_/5). % lgt_before_(Obj, Msg, Sender, Monitor, Call) :- dynamic(lgt_after_/5). % lgt_after_(Obj, Msg, Sender, Monitor, Call) % loaded entities and respective relationships :- dynamic(lgt_current_protocol_/2). % lgt_current_protocol_(Ptc, Prefix) :- dynamic(lgt_current_category_/2). % lgt_current_category_(Ctg, Prefix) :- dynamic(lgt_current_object_/5). % lgt_current_object_(Obj, Prefix, Dcl, Def, Super) :- dynamic(lgt_implements_protocol_/3). % lgt_implements_protocol_(ObjOrCtg, Ptc, Scope) :- dynamic(lgt_imports_category_/3). % lgt_imports_category_(Obj, Ctg, Scope) :- dynamic(lgt_instantiates_class_/3). % lgt_instantiates_class_(Instance, Class, Scope) :- dynamic(lgt_specializes_class_/3). % lgt_specializes_class_(Class, Superclass, Scope) :- dynamic(lgt_extends_protocol_/3). % lgt_extends_protocol_(Ptc1, Ptc2, Scope) :- dynamic(lgt_extends_object_/3). % lgt_extends_object_(Prototype, Parent, Scope) %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % pre-processor directives % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % dynamic declarations :- dynamic(lgt_dcl_/1). % lgt_dcl_(Clause) :- dynamic(lgt_def_/1). % lgt_def_(Clause) :- dynamic(lgt_super_/1). % lgt_super_(Clause) :- dynamic(lgt_dynamic_/1). % lgt_dynamic_(Functor/Arity) :- dynamic(lgt_discontiguous_/1). % lgt_discontiguous_(Functor/Arity) :- dynamic(lgt_mode_/2). % lgt_mode_(Mode, Determinism) :- dynamic(lgt_public_/1). % lgt_public_(Functor/Arity) :- dynamic(lgt_protected_/1). % lgt_protected_(Functor/Arity) :- dynamic(lgt_private_/1). % lgt_private_(Functor/Arity) :- dynamic(lgt_metapredicate_/1). % lgt_metapredicate_(Pred) :- dynamic(lgt_object_/9). % lgt_object_(Obj, Prefix, Dcl, Def, Super, SDcl, SDef, DDcl, DDef) :- dynamic(lgt_category_/4). % lgt_category_(Ctg, Prefix, Dcl, Def) :- dynamic(lgt_protocol_/3). % lgt_protocol_(Ptc, Prefix, Dcl) :- dynamic(lgt_uses_/1). % lgt_uses_(Entity) :- dynamic(lgt_calls_/1). % lgt_calls_(Entity) :- dynamic(lgt_info_/1). % lgt_info_(List) :- dynamic(lgt_info_/2). % lgt_info_(Functor/Arity, List) :- dynamic(lgt_implemented_protocol_/4). % lgt_implemented_protocol_(Ptc, Prefix, Dcl, Scope) :- dynamic(lgt_imported_category_/5). % lgt_imported_category_(Ctg, Prefix, Dcl, Def, Scope) :- dynamic(lgt_extended_object_/10). % lgt_extended_object_(Parent, Prefix, Dcl, Def, Super, SDcl, SDef, DDcl, DDef, Scope) :- dynamic(lgt_instantiated_class_/10). % lgt_instantiated_class_(Class, Prefix, Dcl, Def, Super, SDcl, SDef, DDcl, DDef, Scope) :- dynamic(lgt_specialized_class_/10). % lgt_specialized_class_(Superclass, Prefix, Dcl, Def, Super, SDcl, SDef, DDcl, DDef, Scope) :- dynamic(lgt_extended_protocol_/4). % lgt_extended_protocol_(Ptc2, Prefix, Dcl, Scope) :- dynamic(lgt_entity_/4). % lgt_entity_(Type, Entity, Prefix, Dcl) :- dynamic(lgt_entity_functors_/1). % lgt_entity_functors_(Clause) :- dynamic(lgt_entity_init_/1). % lgt_entity_init_(Goal) :- dynamic(lgt_fentity_init_/1). % lgt_fentity_init_(Goal) :- dynamic(lgt_entity_comp_mode_/1). % lgt_entity_comp_mode_(Type) :- dynamic(lgt_redefined_built_in_/3). % lgt_redefined_built_in_(Head, Context, THead) :- dynamic(lgt_directive_/1). % lgt_directive_(Dir) :- dynamic(lgt_rclause_/1). % lgt_rclause_(Clause) :- dynamic(lgt_eclause_/1). % lgt_eclause_(Clause) :- dynamic(lgt_feclause_/1). % lgt_feclause_(Clause) :- dynamic(lgt_defs_pred_/1). % lgt_defs_pred_(Functor/Arity) :- dynamic(lgt_calls_pred_/1). % lgt_calls_pred_(Functor/Arity) :- dynamic(lgt_current_compiler_option_/2). % lgt_current_compiler_option_(Option, Value) %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % top level runtime predicate % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Obj::Pred :- var(Obj), throw(error(instantiation_error, Obj::Pred, user)). Obj::Pred :- var(Pred), throw(error(instantiation_error, Obj::Pred, user)). Obj::Pred :- lgt_sender(Context, user), lgt_this(Context, user), lgt_self(Context, Obj), lgt_tr_msg(Obj, Pred, Call, Context), call(Call). %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % built-in predicates % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % current_object(?object_identifier) current_object(Obj) :- nonvar(Obj), \+ lgt_valid_object_id(Obj), throw(error(type_error(object_identifier, Obj), current_object(Obj))). current_object(Obj) :- lgt_current_object_(Obj, _, _, _, _). % current_protocol(?protocol_identifier) current_protocol(Ptc) :- nonvar(Ptc), \+ lgt_valid_protocol_id(Ptc), throw(error(type_error(protocol_identifier, Ptc), current_protocol(Ptc))). current_protocol(Ptc) :- lgt_current_protocol_(Ptc, _). % current_category(?category_identifier) current_category(Ctg) :- nonvar(Ctg), \+ lgt_valid_category_id(Ctg), throw(error(type_error(category_identifier, Ctg), current_category(Ctg))). current_category(Ctg) :- lgt_current_category_(Ctg, _). % object_property(?object_identifier, ?object_property) object_property(Obj, Prop) :- nonvar(Obj), \+ lgt_valid_object_id(Obj), throw(error(type_error(object_identifier, Obj), object_property(Obj, Prop))). object_property(Obj, Prop) :- nonvar(Prop), \+ lgt_member(Prop, [(dynamic), static, built_in]), throw(error(domain_error(object_property, Prop), object_property(Obj, Prop))). object_property(user, built_in). object_property(Obj, Prop) :- lgt_current_object_(Obj, Prefix, _, _, _), functor(Pred, Prefix, 7), (lgt_predicate_property(Pred, (dynamic)) -> Prop = (dynamic) ; Prop = static). % category_property(?category_identifier, ?category_property) category_property(Ctg, Prop) :- nonvar(Ctg), \+ lgt_valid_category_id(Ctg), throw(error(type_error(category_identifier, Ctg), category_property(Ctg, Prop))). category_property(Ctg, Prop) :- nonvar(Prop), \+ lgt_member(Prop, [(dynamic), static, built_in]), throw(error(domain_error(category_property, Prop), category_property(Ctg, Prop))). category_property(Ctg, Prop) :- lgt_current_category_(Ctg, Prefix), functor(Pred, Prefix, 2), (lgt_predicate_property(Pred, (dynamic)) -> Prop = (dynamic) ; Prop = static). % protocol_property(?protocol_identifier, ?protocol_property) protocol_property(Ptc, Prop) :- nonvar(Ptc), \+ lgt_valid_protocol_id(Ptc), throw(error(type_error(protocol_identifier, Ptc), protocol_property(Ptc, Prop))). protocol_property(Ptc, Prop) :- nonvar(Prop), \+ lgt_member(Prop, [(dynamic), static, built_in]), throw(error(domain_error(protocol_property, Prop), protocol_property(Ptc, Prop))). protocol_property(Ptc, Prop) :- lgt_current_protocol_(Ptc, Prefix), functor(Pred, Prefix, 1), (lgt_predicate_property(Pred, (dynamic)) -> Prop = (dynamic) ; Prop = static). % create_object(+object_identifier, +list, +list, +list) create_object(Obj, Rels, Dirs, Clauses) :- var(Obj), throw(error(instantiation_error, create_object(Obj, Rels, Dirs, Clauses))). create_object(Obj, Rels, Dirs, Clauses) :- \+ lgt_valid_object_id(Obj), throw(error(type_error(object_identifier, Obj), create_object(Obj, Rels, Dirs, Clauses))). create_object(Obj, Rels, Dirs, Clauses) :- lgt_current_object_(Obj, _, _, _, _), throw(error(permission_error(replace, object, Obj), create_object(Obj, Rels, Dirs, Clauses))). create_object(Obj, Rels, Dirs, Clauses) :- lgt_current_category_(Obj, _), throw(error(permission_error(replace, category, Obj), create_object(Obj, Rels, Dirs, Clauses))). create_object(Obj, Rels, Dirs, Clauses) :- lgt_current_protocol_(Obj, _), throw(error(permission_error(replace, protocol, Obj), create_object(Obj, Rels, Dirs, Clauses))). create_object(Obj, Rels, Dirs, Clauses) :- (var(Rels); \+ lgt_proper_list(Rels)), throw(error(type_error(list, Rels), create_object(Obj, Rels, Dirs, Clauses))). create_object(Obj, Rels, Dirs, Clauses) :- (var(Dirs); \+ lgt_proper_list(Dirs)), throw(error(type_error(list, Dirs), create_object(Obj, Rels, Dirs, Clauses))). create_object(Obj, Rels, Dirs, Clauses) :- (var(Clauses); \+ lgt_proper_list(Clauses)), throw(error(type_error(list, Clauses), create_object(Obj, Rels, Dirs, Clauses))). create_object(Obj, Rels, Dirs, Clauses) :- lgt_clean_up, lgt_tr_directive(object, [Obj| Rels]), lgt_tr_directives(Dirs), lgt_tr_clauses(Clauses), lgt_fix_redef_built_ins, lgt_gen_object_clauses, lgt_gen_object_directives, lgt_assert_tr_entity. % create_category(+category_identifier, +list, +list, +list) create_category(Ctg, Rels, Dirs, Clauses) :- var(Ctg), throw(error(instantiation_error, create_category(Ctg, Rels, Dirs, Clauses))). create_category(Ctg, Rels, Dirs, Clauses) :- \+ lgt_valid_category_id(Ctg), throw(error(type_error(category_identifier, Ctg), create_category(Ctg, Rels, Dirs, Clauses))). create_category(Ctg, Rels, Dirs, Clauses) :- lgt_current_category_(Ctg, _), throw(error(permission_error(replace, category, Ctg), create_category(Ctg, Rels, Dirs, Clauses))). create_category(Ctg, Rels, Dirs, Clauses) :- lgt_current_object_(Ctg, _, _, _, _), throw(error(permission_error(replace, object, Ctg), create_category(Ctg, Rels, Dirs, Clauses))). create_category(Ctg, Rels, Dirs, Clauses) :- lgt_current_protocol_(Ctg, _), throw(error(permission_error(replace, protocol, Ctg), create_category(Ctg, Rels, Dirs, Clauses))). create_category(Ctg, Rels, Dirs, Clauses) :- (var(Rels); \+ lgt_proper_list(Rels)), throw(error(type_error(list, Rels), create_category(Ctg, Rels, Dirs, Clauses))). create_category(Ctg, Rels, Dirs, Clauses) :- (var(Dirs); \+ lgt_proper_list(Dirs)), throw(error(type_error(list, Dirs), create_category(Ctg, Rels, Dirs, Clauses))). create_category(Ctg, Rels, Dirs, Clauses) :- (var(Clauses); \+ lgt_proper_list(Clauses)), throw(error(type_error(list, Clauses), create_category(Ctg, Rels, Dirs, Clauses))). create_category(Ctg, Rels, Dirs, Clauses) :- lgt_clean_up, lgt_tr_directive(category, [Ctg| Rels]), lgt_tr_directives(Dirs), lgt_tr_clauses(Clauses), lgt_fix_redef_built_ins, lgt_gen_category_clauses, lgt_gen_category_directives, lgt_assert_tr_entity. % create_protocol(+protocol_identifier, +list, +list) create_protocol(Ptc, Rels, Dirs) :- var(Ptc), throw(error(instantiation_error, create_protocol(Ptc, Rels, Dirs))). create_protocol(Ptc, Rels, Dirs) :- \+ lgt_valid_protocol_id(Ptc), throw(error(type_error(protocol_identifier, Ptc), create_protocol(Ptc, Rels, Dirs))). create_protocol(Ptc, Rels, Dirs) :- lgt_current_protocol_(Ptc, _), throw(error(permission_error(replace, protocol, Ptc), create_protocol(Ptc, Rels, Dirs))). create_protocol(Ptc, Rels, Dirs) :- lgt_current_object_(Ptc, _, _, _, _), throw(error(permission_error(replace, object, Ptc), create_protocol(Ptc, Rels, Dirs))). create_protocol(Ptc, Rels, Dirs) :- lgt_current_category_(Ptc, _), throw(error(permission_error(replace, category, Ptc), create_protocol(Ptc, Rels, Dirs))). create_protocol(Ptc, Rels, Dirs) :- (var(Rels); \+ lgt_proper_list(Rels)), throw(error(type_error(list, Rels), create_protocol(Ptc, Rels, Dirs))). create_protocol(Ptc, Rels, Dirs) :- (var(Dirs); \+ lgt_proper_list(Dirs)), throw(error(type_error(list, Dirs), create_protocol(Ptc, Rels, Dirs))). create_protocol(Ptc, Rels, Dirs) :- lgt_clean_up, lgt_tr_directive(protocol, [Ptc| Rels]), lgt_tr_directives(Dirs), lgt_gen_protocol_clauses, lgt_gen_protocol_directives, lgt_assert_tr_entity. % abolish_object(@object_identifier) abolish_object(Obj) :- var(Obj), throw(error(instantiation_error, abolish_object(Obj))). abolish_object(Obj) :- \+ lgt_valid_object_id(Obj), throw(error(type_error(object_identifier, Obj), abolish_object(Obj))). abolish_object(Obj) :- lgt_current_object_(Obj, Prefix, _, _, _) -> (object_property(Obj, (dynamic)) -> lgt_once(Prefix, Dcl, Def, Super, SDcl, SDef, DDcl, DDef), forall( lgt_call(Def, _, _, _, _, Pred), (functor(Pred, Functor, Arity), abolish(Functor/Arity))), forall( lgt_call(DDef, _, _, _, _, Pred), (functor(Pred, Functor, Arity), abolish(Functor/Arity))), abolish(Dcl/4), abolish(Dcl/6), abolish(Def/5), abolish(Def/6), abolish(Super/6), abolish(SDcl/6), abolish(SDef/6), abolish(DDcl/4), abolish(DDef/5), abolish(Prefix/7), retractall(lgt_current_object_(Obj, _, _, _, _)), retractall(lgt_extends_object_(Obj, _, _)), retractall(lgt_instantiates_class_(Obj, _, _)), retractall(lgt_specializes_class_(Obj, _, _)), retractall(lgt_implements_protocol_(Obj, _, _)), retractall(lgt_imports_category_(Obj, _, _)) ; throw(error(permission_error(modify, static_object, Obj), abolish_object(Obj)))) ; throw(error(existence_error(object, Obj), abolish_object(Obj))). % abolish_category(@category_identifier) abolish_category(Ctg) :- var(Ctg), throw(error(instantiation_error, abolish_category(Ctg))). abolish_category(Ctg) :- \+ lgt_valid_category_id(Ctg), throw(error(type_error(category_identifier, Ctg), abolish_category(Ctg))). abolish_category(Ctg) :- lgt_current_category_(Ctg, Prefix) -> (category_property(Ctg, (dynamic)) -> lgt_once(Prefix, Dcl, Def), forall( lgt_call(Def, _, _, _, _, Pred), (functor(Pred, Functor, Arity), abolish(Functor/Arity))), abolish(Dcl/4), abolish(Dcl/5), abolish(Def/5), abolish(Prefix/2), retractall(lgt_current_category_(Ctg, _)), retractall(lgt_implements_protocol_(Ctg, _, _)) ; throw(error(permission_error(modify, static_category, Ctg), abolish_category(Ctg)))) ; throw(error(existence_error(category, Ctg), abolish_category(Ctg))). % abolish_protocol(@protocol_identifier) abolish_protocol(Ptc) :- var(Ptc), throw(error(instantiation_error, abolish_protocol(Ptc))). abolish_protocol(Ptc) :- \+ lgt_valid_protocol_id(Ptc), throw(error(type_error(protocol_identifier, Ptc), abolish_protocol(Ptc))). abolish_protocol(Ptc) :- lgt_current_protocol_(Ptc, Prefix) -> (protocol_property(Ptc, (dynamic)) -> lgt_once(Prefix, Dcl), abolish(Dcl/4), abolish(Dcl/5), abolish(Prefix/1), retractall(lgt_current_protocol_(Ptc, _)), retractall(lgt_extends_protocol_(Ptc, _, _)) ; throw(error(permission_error(modify, static_protocol, Ptc), abolish_protocol(Ptc)))) ; throw(error(existence_error(protocol, Ptc), abolish_protocol(Ptc))). % implements_protocol(?term, ?atom) implements_protocol(Entity, Ptc) :- catch( implements_protocol(Entity, Ptc, _), error(Error, _), throw(error(Error, implements_protocol(Entity, Ptc)))). % implements_protocol(?term, ?atom, ?atom) implements_protocol(Entity, Ptc, Scope) :- nonvar(Entity), \+ lgt_valid_object_id(Entity), throw(error(type_error(object_identifier, Entity), implements_protocol(Entity, Ptc, Scope))). implements_protocol(Entity, Ptc, Scope) :- nonvar(Ptc), \+ lgt_valid_protocol_id(Ptc), throw(error(type_error(protocol_identifier, Ptc), implements_protocol(Entity, Ptc, Scope))). implements_protocol(Entity, Ptc, Scope) :- nonvar(Scope), \+ lgt_member(Scope, [(public), protected, private]), throw(error(type_error(entity_scope, Scope), implements_protocol(Entity, Ptc, Scope))). implements_protocol(Entity, Ptc, Scope) :- lgt_implements_protocol_(Entity, Ptc, Scope). % imports_category(?term, ?term) imports_category(Obj, Ctg) :- catch( imports_category(Obj, Ctg, _), error(Error, _), throw(error(Error, imports_category(Obj, Ctg)))). % imports_category(?term, ?term, ?atom) imports_category(Obj, Ctg, Scope) :- nonvar(Obj), \+ lgt_valid_object_id(Obj), throw(error(type_error(object_identifier, Obj), imports_category(Obj, Ctg, Scope))). imports_category(Obj, Ctg, Scope) :- nonvar(Ctg), \+ lgt_valid_category_id(Ctg), throw(error(type_error(category_identifier, Ctg), imports_category(Obj, Ctg, Scope))). imports_category(Obj, Ctg, Scope) :- nonvar(Scope), \+ lgt_member(Scope, [(public), protected, private]), throw(error(type_error(entity_scope, Scope), imports_category(Obj, Ctg, Scope))). imports_category(Obj, Ctg, Scope) :- lgt_imports_category_(Obj, Ctg, Scope). % instantiates_class(?term, ?term) instantiates_class(Obj, Class) :- catch( instantiates_class(Obj, Class, _), error(Error, _), throw(error(Error, instantiates_class(Obj, Class)))). % instantiates_class(?term, ?term, ?atom) instantiates_class(Obj, Class, Scope) :- nonvar(Obj), \+ lgt_valid_object_id(Obj), throw(error(type_error(object_identifier, Obj), instantiates_class(Obj, Class, Scope))). instantiates_class(Obj, Class, Scope) :- nonvar(Class), \+ lgt_valid_object_id(Class), throw(error(type_error(object_identifier, Class), instantiates_class(Obj, Class, Scope))). instantiates_class(Obj, Class, Scope) :- nonvar(Scope), \+ lgt_member(Scope, [(public), protected, private]), throw(error(type_error(entity_scope, Scope), instantiates_class(Obj, Class, Scope))). instantiates_class(Obj, Class, Scope) :- lgt_instantiates_class_(Obj, Class, Scope). % specializes_class(?term, ?term) specializes_class(Class, Superclass) :- catch( specializes_class(Class, Superclass, _), error(Error, _), throw(error(Error, specializes_class(Class, Superclass)))). % specializes_class(?term, ?term, ?atom) specializes_class(Class, Superclass, Scope) :- nonvar(Class), \+ lgt_valid_object_id(Class), throw(error(type_error(object_identifier, Class), specializes_class(Class, Superclass, Scope))). specializes_class(Class, Superclass, Scope) :- nonvar(Superclass), \+ lgt_valid_object_id(Superclass), throw(error(type_error(object_identifier, Superclass), specializes_class(Class, Superclass, Scope))). specializes_class(Class, Superclass, Scope) :- nonvar(Scope), \+ lgt_member(Scope, [(public), protected, private]), throw(error(type_error(entity_scope, Scope), specializes_class(Class, Superclass, Scope))). specializes_class(Class, Superclass, Scope) :- lgt_specializes_class_(Class, Superclass, Scope). % extends_protocol(?atom, ?atom) extends_protocol(Ptc1, Ptc2) :- catch( extends_protocol(Ptc1, Ptc2, _), error(Error, _), throw(error(Error, extends_protocol(Ptc1, Ptc2)))). % extends_protocol(?atom, ?atom, ?atom) extends_protocol(Ptc1, Ptc2, Scope) :- nonvar(Ptc1), \+ lgt_valid_protocol_id(Ptc1), throw(error(type_error(protocol_identifier, Ptc1), extends_protocol(Ptc1, Ptc2, Scope))). extends_protocol(Ptc1, Ptc2, Scope) :- nonvar(Ptc2), \+ lgt_valid_protocol_id(Ptc2), throw(error(type_error(protocol_identifier, Ptc2), extends_protocol(Ptc1, Ptc2, Scope))). extends_protocol(Ptc1, Ptc2, Scope) :- nonvar(Scope), \+ lgt_member(Scope, [(public), protected, private]), throw(error(type_error(entity_scope, Scope), extends_protocol(Ptc1, Ptc2, Scope))). extends_protocol(Ptc1, Ptc2, Scope) :- lgt_extends_protocol_(Ptc1, Ptc2, Scope). % extends_object(?term, ?term) extends_object(Prototype, Parent) :- catch( extends_object(Prototype, Parent, _), error(Error, _), throw(error(Error, extends_object(Prototype, Parent)))). % extends_object(?term, ?term, ?atom) extends_object(Prototype, Parent, Scope) :- nonvar(Prototype), \+ lgt_valid_object_id(Prototype), throw(error(type_error(object_identifier, Prototype), extends_object(Prototype, Parent, Scope))). extends_object(Prototype, Parent, Scope) :- nonvar(Parent), \+ lgt_valid_object_id(Parent), throw(error(type_error(object_identifier, Parent), extends_object(Prototype, Parent, Scope))). extends_object(Prototype, Parent, Scope) :- nonvar(Scope), \+ lgt_member(Scope, [(public), protected, private]), throw(error(type_error(entity_scope, Scope), extends_object(Prototype, Parent, Scope))). extends_object(Prototype, Parent, Scope) :- lgt_extends_object_(Prototype, Parent, Scope). % current_event(?event, ?object_identifier, ?callable, ?object_identifier, ?object_identifier) current_event(Event, Obj, Msg, Sender, Monitor) :- nonvar(Event), Event \= before, Event \= after, throw(error(type_error(event, Event), current_event(Event, Obj, Msg, Sender, Monitor))). current_event(Event, Obj, Msg, Sender, Monitor) :- nonvar(Obj), \+ lgt_valid_object_id(Obj), throw(error(type_error(object_identifier, Obj), current_event(Event, Obj, Msg, Sender, Monitor))). current_event(Event, Obj, Msg, Sender, Monitor) :- nonvar(Msg), \+ lgt_callable(Msg), throw(error(type_error(callable, Msg), current_event(Event, Obj, Msg, Sender, Monitor))). current_event(Event, Obj, Msg, Sender, Monitor) :- nonvar(Sender), \+ lgt_valid_object_id(Sender), throw(error(type_error(object_identifier, Sender), current_event(Event, Obj, Msg, Sender, Monitor))). current_event(Event, Obj, Msg, Sender, Monitor) :- nonvar(Monitor), \+ lgt_valid_object_id(Monitor), throw(error(type_error(object_identifier, Monitor), current_event(Event, Obj, Msg, Sender, Monitor))). current_event(before, Obj, Msg, Sender, Monitor) :- lgt_before_(Obj, Msg, Sender, Monitor, _). current_event(after, Obj, Msg, Sender, Monitor) :- lgt_after_(Obj, Msg, Sender, Monitor, _). %define_events(@event, @object_identifier, @callable, @object_identifier, +object_identifier) define_events(Event, Obj, Msg, Sender, Monitor) :- nonvar(Event), Event \= before, Event \= after, throw(error(type_error(event, Event), define_events(Event, Obj, Msg, Sender, Monitor))). define_events(Event, Obj, Msg, Sender, Monitor) :- nonvar(Obj), \+ lgt_valid_object_id(Obj), throw(error(type_error(object_identifier, Obj), define_events(Event, Obj, Msg, Sender, Monitor))). define_events(Event, Obj, Msg, Sender, Monitor) :- nonvar(Msg), \+ lgt_callable(Msg), throw(error(type_error(callable, Msg), define_events(Event, Obj, Msg, Sender, Monitor))). define_events(Event, Obj, Msg, Sender, Monitor) :- nonvar(Sender), \+ lgt_valid_object_id(Sender), throw(error(type_error(object_identifier, Sender), define_events(Event, Obj, Msg, Sender, Monitor))). define_events(Event, Obj, Msg, Sender, Monitor) :- var(Monitor), throw(error(instantiation_error, define_events(Event, Obj, Msg, Sender, Monitor))). define_events(Event, Obj, Msg, Sender, Monitor) :- nonvar(Monitor), \+ lgt_valid_object_id(Monitor), throw(error(type_error(object_identifier, Monitor), define_events(Event, Obj, Msg, Sender, Monitor))). define_events(Event, Obj, Msg, Sender, Monitor) :- var(Event), !, lgt_current_object_(Monitor, _, _, Def, _), lgt_call(Def, before(Obj, Msg, Sender), Monitor, Monitor, Monitor, BCall, _), lgt_call(Def, after(Obj, Msg, Sender), Monitor, Monitor, Monitor, ACall, _), retractall(lgt_before_(Obj, Msg, Sender, Monitor, _)), assertz(lgt_before_(Obj, Msg, Sender, Monitor, BCall)), retractall(lgt_after_(Obj, Msg, Sender, Monitor, _)), assertz(lgt_after_(Obj, Msg, Sender, Monitor, ACall)). define_events(before, Obj, Msg, Sender, Monitor) :- lgt_current_object_(Monitor, _, _, Def, _), lgt_call(Def, before(Obj, Msg, Sender), Monitor, Monitor, Monitor, Call, _), retractall(lgt_before_(Obj, Msg, Sender, Monitor, _)), assertz(lgt_before_(Obj, Msg, Sender, Monitor, Call)). define_events(after, Obj, Msg, Sender, Monitor) :- lgt_current_object_(Monitor, _, _, Def, _), lgt_call(Def, after(Obj, Msg, Sender), Monitor, Monitor, Monitor, Call, _), retractall(lgt_after_(Obj, Msg, Sender, Monitor, _)), assertz(lgt_after_(Obj, Msg, Sender, Monitor, Call)). % abolish_events(@event, @object_identifier, @callable, @object_identifier, @object_identifier) abolish_events(Event, Obj, Msg, Sender, Monitor) :- nonvar(Event), Event \= before, Event \= after, throw(error(type_error(event, Event), abolish_events(Event, Obj, Msg, Sender, Monitor))). abolish_events(Event, Obj, Msg, Sender, Monitor) :- nonvar(Obj), \+ lgt_valid_object_id(Obj), throw(error(type_error(object_identifier, Obj), abolish_events(Event, Obj, Msg, Sender, Monitor))). abolish_events(Event, Obj, Msg, Sender, Monitor) :- nonvar(Msg), \+ lgt_callable(Msg), throw(error(type_error(callable, Msg), abolish_events(Event, Obj, Msg, Sender, Monitor))). abolish_events(Event, Obj, Msg, Sender, Monitor) :- nonvar(Sender), \+ lgt_valid_object_id(Sender), throw(error(type_error(object_identifier, Sender), abolish_events(Event, Obj, Msg, Sender, Monitor))). abolish_events(Event, Obj, Msg, Sender, Monitor) :- nonvar(Monitor), \+ lgt_valid_object_id(Monitor), throw(error(type_error(object_identifier, Monitor), abolish_events(Event, Obj, Msg, Sender, Monitor))). abolish_events(Event, Obj, Msg, Sender, Monitor) :- var(Event), !, retractall(lgt_before_(Obj, Msg, Sender, Monitor, _)), retractall(lgt_after_(Obj, Msg, Sender, Monitor, _)). abolish_events(before, Obj, Msg, Sender, Monitor) :- retractall(lgt_before_(Obj, Msg, Sender, Monitor, _)). abolish_events(after, Obj, Msg, Sender, Monitor) :- retractall(lgt_after_(Obj, Msg, Sender, Monitor, _)). % compiling and loading built-in predicates % lgt_compiler_option(+atom, ?atom) % % gets/check the current value of a compiler option lgt_compiler_option(Option, Value) :- lgt_current_compiler_option_(Option, Value2) -> Value = Value2 ; lgt_default_compiler_option(Option, Value). % logtalk_compile(+list) % % compiles to disk a list of entities using default options logtalk_compile(Entities) :- catch( logtalk_compile(Entities, []), error(Error, _), throw(error(Error, logtalk_compile(Entities)))). % logtalk_compile(+list, +list) % % compiles to disk a list of entities using a list of options logtalk_compile(Entities, Options) :- catch( (lgt_check_compiler_entities(Entities), lgt_check_compiler_options(Options)), Error, throw(error(Error, logtalk_compile(Entities, Options)))), lgt_set_compiler_options(Options), lgt_compile_entities(Entities). % lgt_check_compiler_entities(+list) % % check if the entities names are valid and if the corresponding % files exist in the current working directory lgt_check_compiler_entities(Entities) :- var(Entities), throw(instantiation_error). lgt_check_compiler_entities(Entities) :- \+ lgt_proper_list(Entities), throw(type_error(list, Entities)). lgt_check_compiler_entities(Entities) :- lgt_check_compiler_entity_list(Entities). lgt_check_compiler_entity_list([]). lgt_check_compiler_entity_list([Entity| Entities]) :- lgt_check_compiler_entity(Entity), lgt_check_compiler_entity_list(Entities). lgt_check_compiler_entity(Entity) :- \+ atom(Entity), throw(type_error(atom, Entity)). lgt_check_compiler_entity(Entity) :- lgt_file_name(logtalk, Entity, File), \+ lgt_file_exists(File), throw(existence_error(entity, Entity)). lgt_check_compiler_entity(_). % lgt_check_compiler_options(+list) % % check if the compiler options are valid lgt_check_compiler_options(Options) :- var(Options), throw(instantiation_error). lgt_check_compiler_options(Options) :- \+ lgt_proper_list(Options), throw(type_error(list, Options)). lgt_check_compiler_options(Options) :- lgt_check_compiler_option_list(Options). lgt_check_compiler_option_list([]). lgt_check_compiler_option_list([Option| Options]) :- lgt_check_compiler_option(Option), lgt_check_compiler_option_list(Options). lgt_check_compiler_option(Option) :- lgt_valid_compiler_option(Option) -> true ; throw(type_error(compiler_option, Option)). lgt_set_compiler_options(Options) :- retractall(lgt_current_compiler_option_(_, _)), lgt_assert_compiler_options(Options). lgt_assert_compiler_options([]). lgt_assert_compiler_options([Option| Options]) :- Option =.. [Key, Value], asserta(lgt_current_compiler_option_(Key, Value)), lgt_assert_compiler_options(Options). % logtalk_load(+list) % % compiles to disk and then load to memory a % list of entities using default options logtalk_load(Entities) :- catch( logtalk_load(Entities, []), error(Error, _), throw(error(Error, logtalk_load(Entities)))). % logtalk_load(+list, +list) % % compiles to disk and then load to memory a % list of entities using a list of options logtalk_load(Entities, Options) :- catch( (lgt_check_compiler_entities(Entities), lgt_check_compiler_options(Options)), Error, throw(error(Error, logtalk_load(Entities, Options)))), lgt_set_compiler_options(Options), lgt_load_entities(Entities). % logtalk_version(?integer, ?integer, ?integer) logtalk_version(Major, Minor, Patch) :- nonvar(Major), \+ integer(Major), throw(error(type_error(integer, Major), logtalk_version(Major, Minor, Patch))). logtalk_version(Major, Minor, Patch) :- nonvar(Minor), \+ integer(Minor), throw(error(type_error(integer, Minor), logtalk_version(Major, Minor, Patch))). logtalk_version(Major, Minor, Patch) :- nonvar(Patch), \+ integer(Patch), throw(error(type_error(integer, Patch), logtalk_version(Major, Minor, Patch))). logtalk_version(2, 8, 4). %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % built-in methods % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% lgt_current_predicate(Obj, Pred, Sender, _) :- nonvar(Pred), Pred \= _/_, throw(error(type_error(predicate_indicator, Pred), Obj::current_predicate(Pred), Sender)). lgt_current_predicate(Obj, Functor/Arity, Sender, _) :- nonvar(Functor), \+ atom(Functor), throw(error(type_error(predicate_indicator, Functor/Arity), Obj::current_predicate(Functor/Arity), Sender)). lgt_current_predicate(Obj, Functor/Arity, Sender, _) :- nonvar(Arity), \+ (integer(Arity), Arity >= 0), throw(error(type_error(predicate_indicator, Functor/Arity), Obj::current_predicate(Functor/Arity), Sender)). lgt_current_predicate(Obj, Functor/Arity, Sender, _) :- \+ lgt_current_object_(Obj, _, _, _, _), throw(error(existence_error(object, Obj), Obj::current_predicate(Functor/Arity), Sender)). lgt_current_predicate(Obj, Functor/Arity, Sender, Scope) :- nonvar(Functor), nonvar(Arity), !, functor(Pred, Functor, Arity), lgt_current_object_(Obj, _, Dcl, _, _), lgt_once(Dcl, Pred, PScope, _, _, SContainer, _), once((\+ \+ PScope = Scope; Sender = SContainer)). lgt_current_predicate(Obj, Functor/Arity, Sender, Scope) :- lgt_current_object_(Obj, _, Dcl, _, _), findall( Functor/Arity-(PScope, SContainer), (lgt_call(Dcl, Pred, PScope, _, _, SContainer, _), functor(Pred, Functor, Arity)), Preds), lgt_cp_filter(Preds, Filtered), lgt_member(Functor/Arity-(PScope, SContainer), Filtered), once((\+ \+ PScope = Scope; Sender = SContainer)). % lgt_cp_filter(+list, -list) % % removes duplicated predicates and predicates that have been redeclared lgt_cp_filter([], []). lgt_cp_filter([Data| Rest], [Data| Rest2]) :- lgt_cp_remove_all(Rest, Data, Aux), lgt_cp_filter(Aux, Rest2). lgt_cp_remove_all([], _, []). lgt_cp_remove_all([F/A-_| Rest], F/A-D, List) :- !, lgt_cp_remove_all(Rest, F/A-D, List). lgt_cp_remove_all([Data| Rest], Filter, [Data| Rest2]) :- !, lgt_cp_remove_all(Rest, Filter, Rest2). lgt_predicate_property(Obj, Pred, Prop, Sender, _) :- var(Pred), throw(error(instantiation_error, Obj::predicate_property(Pred, Prop), Sender)). lgt_predicate_property(Obj, Pred, Prop, Sender, _) :- nonvar(Prop), \+ lgt_member(Prop, [(public), protected, private, static, (dynamic), declared_in(_), defined_in(_), metapredicate(_), built_in]), throw(error(domain_error(predicate_property, Prop), Obj::predicate_property(Pred, Prop), Sender)). lgt_predicate_property(Obj, Pred, Prop, Sender, _) :- \+ lgt_callable(Pred), throw(error(type_error(callable, Pred), Obj::predicate_property(Pred, Prop), Sender)). lgt_predicate_property(Obj, Pred, Prop, Sender, _) :- \+ lgt_current_object_(Obj, _, _, _, _), throw(error(existence_error(object, Obj), Obj::predicate_property(Pred, Prop), Sender)). lgt_predicate_property(Obj, Pred, Prop, Sender, Scope) :- lgt_current_object_(Obj, _, Dcl, Def, _), lgt_once(Dcl, Pred, PScope, Type, Meta, SContainer, TContainer), !, once((\+ \+ PScope = Scope; Sender = SContainer)), (lgt_scope(Prop, PScope); Prop = Type; Prop = declared_in(TContainer); lgt_once(Def, Pred, _, _, _, _, DContainer), Prop = defined_in(DContainer); Meta \= no, Prop = metapredicate(Meta)). lgt_predicate_property(_, Pred, Prop, _, Scope) :- lgt_built_in_method(Pred, PScope), !, \+ \+ PScope = Scope, (lgt_scope(Prop, PScope); Prop = static; Prop = built_in). lgt_predicate_property(_, Pred, Prop, _, _) :- lgt_built_in(Pred), functor(Pred, Functor, Arity), functor(Meta, Functor, Arity), (Prop = (public); (lgt_predicate_property(Pred, (dynamic)) -> Prop = (dynamic); Prop = static); Prop = built_in; (lgt_pl_metapredicate(Meta) -> Prop = metapredicate(Meta))). % lgt_scope(?atom, ?term). lgt_scope(private, p). lgt_scope(protected, p(p)). lgt_scope((public), p(p(p))). lgt_abolish(Obj, Pred, Sender, _) :- var(Pred), throw(error(instantiation_error, Obj::abolish(Pred), Sender)). lgt_abolish(Obj, Pred, Sender, _) :- Pred \= _/_, throw(error(type_error(predicate_indicator, Pred), Obj::abolish(predicate), Sender)). lgt_abolish(Obj, Functor/Arity, Sender, _) :- (var(Functor); var(Arity)), throw(error(instantiation_error, Obj::abolish(Functor/Arity), Sender)). lgt_abolish(Obj, Functor/Arity, Sender, _) :- (var(Functor); var(Arity)), throw(error(instantiation_error, Obj::abolish(Functor/Arity), Sender)). lgt_abolish(Obj, Functor/Arity, Sender, _) :- \+ atom(Functor), throw(error(type_error(atom, Functor), Obj::abolish(Functor/Arity), Sender)). lgt_abolish(Obj, Functor/Arity, Sender, _) :- \+ integer(Arity), throw(error(type_error(integer, Arity), Obj::abolish(Functor/Arity), Sender)). lgt_abolish(Obj, Functor/Arity, Sender, _) :- \+ lgt_current_object_(Obj, _, _, _, _), throw(error(existence_error(object, Obj), Obj::abolish(Functor/Arity), Sender)). lgt_abolish(Obj, Functor/Arity, Sender, Scope) :- functor(Pred, Functor, Arity), lgt_current_object_(Obj, Prefix, _, _, _), lgt_once(Prefix, Dcl, _, _, _, _, DDcl, DDef), (lgt_once(Dcl, Pred, PScope, Type, _, SContainer, _) -> (Type = (dynamic) -> ((\+ \+ PScope = Scope; Sender = SContainer) -> (lgt_once(DDcl, Pred, _, _, _) -> (lgt_once(DDef, Pred, _, _, _, Call) -> functor(Call, CFunctor, CArity), abolish(CFunctor/CArity), Clause =.. [DDef, Pred, _, _, _, Call], retractall(Clause) ; true), Clause2 =.. [DDcl, Pred, _, _, _], retractall(Clause2) ; throw(error(permission_error(modify, predicate_declaration, Pred), Obj::abolish(Functor/Arity), Sender))) ; (PScope = p -> throw(error(permission_error(modify, private_predicate, Pred), Obj::abolish(Functor/Arity), Sender)) ; throw(error(permission_error(modify, protected_predicate, Pred), Obj::abolish(Functor/Arity), Sender)))) ; throw(error(permission_error(modify, static_predicate, Pred), Obj::abolish(Functor/Arity), Sender))) ; throw(error(existence_error(predicate_declaration, Pred), Obj::abolish(Functor/Arity), Sender))). lgt_asserta(Obj, Clause, Sender, _) :- var(Clause), throw(error(instantiation_error, Obj::asserta(Clause), Sender)). lgt_asserta(Obj, (Head:-Body), Sender, _) :- var(Head), throw(error(instantiation_error, Obj::asserta((Head:-Body)), Sender)). lgt_asserta(Obj, (Head:-Body), Sender, _) :- \+ lgt_callable(Head), throw(error(type_error(callable, Head), Obj::asserta((Head:-Body)), Sender)). lgt_asserta(Obj, (Head:-Body), Sender, _) :- \+ lgt_callable(Body), throw(error(type_error(callable, Body), Obj::asserta((Head:-Body)), Sender)). lgt_asserta(Obj, Clause, Sender, _) :- \+ lgt_current_object_(Obj, _, _, _, _), throw(error(existence_error(object, Obj), Obj::asserta(Clause), Sender)). lgt_asserta(Obj, (Head:-Body), Sender, Scope) :- !, lgt_current_object_(Obj, Prefix, _, _, _), lgt_once(Prefix, Dcl, Def, _, _, _, DDcl, DDef), (lgt_once(Dcl, Head, PScope, Type, Meta, SContainer, _) -> true ; lgt_assert_dynamic_dcl_clause(Head, DDcl)), (Type = (dynamic) -> ((\+ \+ PScope = Scope; Sender = SContainer) -> ((lgt_once(Def, Head, Sender2, This, Self, Call); lgt_once(DDef, Head, Sender2, This, Self, Call)) -> true ; functor(Head, Functor, Arity), lgt_assert_dynamic_def_clause(Functor, Arity, Prefix, DDef, _), lgt_once(DDef, Head, Sender2, This, Self, Call)), lgt_self(Context, Self), lgt_this(Context, This), lgt_sender(Context, Sender2), lgt_prefix(Context, Prefix), Head =.. [_| Args], Meta =.. [_| MArgs], lgt_extract_metavars(Args, MArgs, Metavars), lgt_metavars(Context, Metavars), asserta((Call:-lgt_tr_body(Body, TBody, Context), call(TBody))) ; (PScope = p -> throw(error(permission_error(modify, private_predicate, Head), Obj::asserta((Head:-Body)), Sender)) ; throw(error(permission_error(modify, protected_predicate, Head), Obj::asserta((Head:-Body)), Sender)))) ; throw(error(permission_error(modify, static_predicate, Head), Obj::asserta((Head:-Body)), Sender))). lgt_asserta(Obj, Head, Sender, Scope) :- lgt_current_object_(Obj, Prefix, _, _, _), lgt_once(Prefix, Dcl, Def, _, _, _, DDcl, DDef), (lgt_once(Dcl, Head, PScope, Type, _, SContainer, _) -> true ; lgt_assert_dynamic_dcl_clause(Head, DDcl)), (Type = (dynamic) -> ((\+ \+ PScope = Scope; Sender = SContainer) -> ((lgt_once(Def, Head, _, _, _, Call); lgt_once(DDef, Head, _, _, _, Call)) -> true ; functor(Head, Functor, Arity), lgt_assert_dynamic_def_clause(Functor, Arity, Prefix, DDef, _), lgt_once(DDef, Head, _, _, _, Call)), asserta(Call) ; (PScope = p -> throw(error(permission_error(modify, private_predicate, Head), Obj::asserta(Head), Sender)) ; throw(error(permission_error(modify, protected_predicate, Head), Obj::asserta(Head), Sender)))) ; throw(error(permission_error(modify, static_predicate, Head), Obj::asserta(Head), Sender))). lgt_assertz(Obj, Clause, Sender, _) :- var(Clause), throw(error(instantiation_error, Obj::assertz(Clause), Sender)). lgt_assertz(Obj, (Head:-Body), Sender, _) :- var(Head), throw(error(instantiation_error, Obj::assertz((Head:-Body)), Sender)). lgt_assertz(Obj, (Head:-Body), Sender, _) :- \+ lgt_callable(Head), throw(error(type_error(callable, Head), Obj::assertz((Head:-Body)), Sender)). lgt_assertz(Obj, (Head:-Body), Sender, _) :- \+ lgt_callable(Body), throw(error(type_error(callable, Body), Obj::assertz((Head:-Body)), Sender)). lgt_assertz(Obj, Clause, Sender, _) :- \+ lgt_current_object_(Obj, _, _, _, _), throw(error(existence_error(object, Obj), Obj::assertz(Clause), Sender)). lgt_assertz(Obj, (Head:-Body), Sender, Scope) :- !, lgt_current_object_(Obj, Prefix, _, _, _), lgt_once(Prefix, Dcl, Def, _, _, _, DDcl, DDef), (lgt_once(Dcl, Head, PScope, Type, Meta, SContainer, _) -> true ; lgt_assert_dynamic_dcl_clause(Head, DDcl)), (Type = (dynamic) -> ((\+ \+ PScope = Scope; Sender = SContainer) -> ((lgt_once(Def, Head, Sender2, This, Self, Call); lgt_once(DDef, Head, Sender2, This, Self, Call)) -> true ; functor(Head, Functor, Arity), lgt_assert_dynamic_def_clause(Functor, Arity, Prefix, DDef, _), lgt_once(DDef, Head, Sender2, This, Self, Call)), lgt_self(Context, Self), lgt_this(Context, This), lgt_sender(Context, Sender2), lgt_prefix(Context, Prefix), Head =.. [_| Args], Meta =.. [_| MArgs], lgt_extract_metavars(Args, MArgs, Metavars), lgt_metavars(Context, Metavars), assertz((Call:-lgt_tr_body(Body, TBody, Context), call(TBody))) ; (PScope = p -> throw(error(permission_error(modify, private_predicate, Head), Obj::assertz((Head:-Body)), Sender)) ; throw(error(permission_error(modify, protected_predicate, Head), Obj::assertz((Head:-Body)), Sender)))) ; throw(error(permission_error(modify, static_predicate, Head), Obj::assertz((Head:-Body)), Sender))). lgt_assertz(Obj, Head, Sender, Scope) :- lgt_current_object_(Obj, Prefix, _, _, _), lgt_once(Prefix, Dcl, Def, _, _, _, DDcl, DDef), (lgt_once(Dcl, Head, PScope, Type, _, SContainer, _) -> true ; lgt_assert_dynamic_dcl_clause(Head, DDcl)), (Type = (dynamic) -> ((\+ \+ PScope = Scope; Sender = SContainer) -> ((lgt_once(Def, Head, _, _, _, Call); lgt_once(DDef, Head, _, _, _, Call)) -> true ; functor(Head, Functor, Arity), lgt_assert_dynamic_def_clause(Functor, Arity, Prefix, DDef, _), lgt_once(DDef, Head, _, _, _, Call)), assertz(Call) ; (PScope = p -> throw(error(permission_error(modify, private_predicate, Head), Obj::assertz(Head), Sender)) ; throw(error(permission_error(modify, protected_predicate, Head), Obj::assertz(Head), Sender)))) ; throw(error(permission_error(modify, static_predicate, Head), Obj::assertz(Head), Sender))). lgt_clause(Obj, Head, Body, Sender, _) :- var(Head), throw(error(instantiation_error, Obj::clause(Head, Body), Sender)). lgt_clause(Obj, Head, Body, Sender, _) :- \+ lgt_callable(Head), throw(error(type_error(callable, Head), Obj::clause(Head, Body), Sender)). lgt_clause(Obj, Head, Body, Sender, _) :- nonvar(Body), \+ lgt_callable(Body), throw(error(type_error(callable, Body), Obj::clause(Head, Body), Sender)). lgt_clause(Obj, Head, Body, Sender, _) :- \+ lgt_current_object_(Obj, _, _, _, _), throw(error(existence_error(object, Obj), Obj::clause(Head, Body), Sender)). lgt_clause(Obj, Head, Body, Sender, Scope) :- lgt_current_object_(Obj, Prefix, _, _, _), lgt_once(Prefix, Dcl, Def, _, _, _, _, DDef), (lgt_once(Dcl, Head, PScope, Type, _, SContainer, _) -> (Type = (dynamic) -> ((\+ \+ PScope = Scope; Sender = SContainer) -> once((lgt_once(Def, Head, _, _, _, Call); lgt_once(DDef, Head, _, _, _, Call))), clause(Call, TBody), (TBody = (lgt_tr_body(Body, _, _), _) -> true ; Body = TBody) ; (PScope = p -> throw(error(permission_error(access, private_predicate, Head), Obj::clause(Head, Body), Sender)) ; throw(error(permission_error(access, protected_predicate, Head), Obj::clause(Head, Body), Sender)))) ; throw(error(permission_error(access, static_predicate, Head), Obj::clause(Head, Body), Sender))) ; throw(error(existence_error(predicate_declaration, Head), Obj::clause(Head, Body), Sender))). lgt_retract(Obj, Clause, Sender, _) :- var(Clause), throw(error(instantiation_error, Obj::retract(Clause), Sender)). lgt_retract(Obj, (Head:-Body), Sender, _) :- var(Head), throw(error(instantiation_error, Obj::retract((Head:-Body)), Sender)). lgt_retract(Obj, (Head:-Body), Sender, _) :- \+ lgt_callable(Head), throw(error(type_error(callable, Head), Obj::retract((Head:-Body)), Sender)). lgt_retract(Obj, Clause, Sender, _) :- \+ lgt_current_object_(Obj, _, _, _, _), throw(error(existence_error(object, Obj), Obj::retract(Clause), Sender)). lgt_retract(Obj, (Head:-Body), Sender, Scope) :- !, lgt_current_object_(Obj, Prefix, _, _, _), lgt_once(Prefix, Dcl, Def, _, _, _, _, DDef), (lgt_once(Dcl, Head, PScope, Type, _, SContainer, _) -> (Type = (dynamic) -> ((\+ \+ PScope = Scope; Sender = SContainer) -> ((lgt_once(Def, Head, _, _, _, Call); lgt_once(DDef, Head, _, _, _, Call)) -> TBody = (lgt_tr_body(Body, _, _), _), retract((Call:-TBody)) ; fail) ; (PScope = p -> throw(error(permission_error(modify, private_predicate, Head), Obj::retract((Head:-Body)), Sender)) ; throw(error(permission_error(modify, protected_predicate, Head), Obj::retract((Head:-Body)), Sender)))) ; throw(error(permission_error(modify, static_predicate, Head), Obj::retract((Head:-Body)), Sender))) ; throw(error(existence_error(predicate_declaration, Head), Obj::retract((Head:-Body)), Sender))). lgt_retract(Obj, Head, Sender, Scope) :- lgt_current_object_(Obj, Prefix, _, _, _), lgt_once(Prefix, Dcl, Def, _, _, _, _, DDef), (lgt_once(Dcl, Head, PScope, Type, _, SContainer, _) -> (Type = (dynamic) -> ((\+ \+ PScope = Scope; Sender = SContainer) -> ((lgt_once(Def, Head, _, _, _, Call); lgt_once(DDef, Head, _, _, _, Call)) -> retract(Call) ; fail) ; (PScope = p -> throw(error(permission_error(modify, private_predicate, Head), Obj::retract(Head), Sender)) ; throw(error(permission_error(modify, protected_predicate, Head), Obj::retract(Head), Sender)))) ; throw(error(permission_error(modify, static_predicate, Head), Obj::retract(Head), Sender))) ; throw(error(existence_error(predicate_declaration, Head), Obj::retract(Head), Sender))). lgt_retractall(Obj, Head, Sender, _) :- var(Head), throw(error(instantiation_error, Obj::retractall(Head), Sender)). lgt_retractall(Obj, Head, Sender, _) :- \+ lgt_callable(Head), throw(error(type_error(callable, Head), Obj::retractall(Head), Sender)). lgt_retractall(Obj, Head, Sender, _) :- \+ lgt_current_object_(Obj, _, _, _, _), throw(error(existence_error(object, Obj), Obj::retractall(Head), Sender)). lgt_retractall(Obj, Head, Sender, Scope) :- lgt_current_object_(Obj, Prefix, _, _, _), lgt_once(Prefix, Dcl, Def, _, _, _, _, DDef), (lgt_once(Dcl, Head, PScope, Type, _, SContainer, _) -> (Type = (dynamic) -> ((\+ \+ PScope = Scope; Sender = SContainer) -> ((lgt_once(Def, Head, _, _, _, Call); lgt_once(DDef, Head, _, _, _, Call)) -> retractall(Call) ; true) ; (PScope = p -> throw(error(permission_error(modify, private_predicate, Head), Obj::retractall(Head), Sender)) ; throw(error(permission_error(modify, protected_predicate, Head), Obj::retractall(Head), Sender)))) ; throw(error(permission_error(modify, static_predicate, Head), Obj::retractall(Head), Sender))) ; throw(error(existence_error(predicate_declaration, Head), Obj::retractall(Head), Sender))). %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % message sending % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% lgt_send_to_self(Self, Pred, This) :- nonvar(Pred) -> lgt_current_object_(Self, _, Dcl, Def, _), (lgt_call(Dcl, Pred, Scope, _, _, SContainer, _) -> ((Scope = p(_); This = SContainer) -> lgt_once(Def, Pred, This, Self, Self, Call, _), call(Call) ; throw(error(permission_error(access, private_predicate, Pred), Self::Pred, This))) ; (lgt_built_in(Pred) -> call(Pred) ; throw(error(existence_error(predicate_declaration, Pred), Self::Pred, This)))) ; throw(error(instantiation_error, Self::Pred, This)). lgt_send_to_self_nv(Self, Pred, This) :- lgt_current_object_(Self, _, Dcl, Def, _), (lgt_call(Dcl, Pred, Scope, _, _, SContainer, _) -> ((Scope = p(_); This = SContainer) -> lgt_once(Def, Pred, This, Self, Self, Call, _), call(Call) ; throw(error(permission_error(access, private_predicate, Pred), Self::Pred, This))) ; (lgt_built_in(Pred) -> call(Pred) ; throw(error(existence_error(predicate_declaration, Pred), Self::Pred, This)))). lgt_send_to_object(Obj, Pred, Sender) :- nonvar(Obj) -> (lgt_current_object_(Obj, _, Dcl, Def, _) -> (nonvar(Pred) -> (lgt_call(Dcl, Pred, Scope, _, _, _, _) -> (Scope = p(p(_)) -> lgt_once(Def, Pred, Sender, Obj, Obj, Call, _), \+ (lgt_before_(Obj, Pred, Sender, _, BCall), \+ call(BCall)), call(Call), \+ (lgt_after_(Obj, Pred, Sender, _, ACall), \+ call(ACall)) ; (Scope = p -> throw(error(permission_error(access, private_predicate, Pred), Obj::Pred, Sender)) ; throw(error(permission_error(access, protected_predicate, Pred), Obj::Pred, Sender)))) ; (lgt_built_in(Pred) -> call(Pred) ; throw(error(existence_error(predicate_declaration, Pred), Obj::Pred, Sender)))) ; throw(error(instantiation_error, Obj::Pred, Sender))) ; throw(error(existence_error(object, Obj), Obj::Pred, Sender))) ; throw(error(instantiation_error, Obj::Pred, Sender)). lgt_send_to_object_nv(Obj, Pred, Sender) :- lgt_current_object_(Obj, _, Dcl, Def, _) -> (lgt_call(Dcl, Pred, Scope, _, _, _, _) -> (Scope = p(p(_)) -> lgt_once(Def, Pred, Sender, Obj, Obj, Call, _), \+ (lgt_before_(Obj, Pred, Sender, _, BCall), \+ call(BCall)), call(Call), \+ (lgt_after_(Obj, Pred, Sender, _, ACall), \+ call(ACall)) ; (Scope = p -> throw(error(permission_error(access, private_predicate, Pred), Obj::Pred, Sender)) ; throw(error(permission_error(access, protected_predicate, Pred), Obj::Pred, Sender)))) ; (lgt_built_in(Pred) -> call(Pred) ; throw(error(existence_error(predicate_declaration, Pred), Obj::Pred, Sender)))) ; throw(error(existence_error(object, Obj), Obj::Pred, Sender)). lgt_send_to_super(Self, Pred, This, Sender) :- nonvar(Pred) -> lgt_current_object_(Self, _, Dcl, _, _), (lgt_call(Dcl, Pred, Scope, _, _, SContainer, _) -> ((Scope = p(_); This = SContainer) -> lgt_current_object_(This, _, _, _, Super), lgt_once(Super, Pred, Sender, This, Self, Call, Container), (Container \= This -> call(Call) ; throw(error(endless_loop(Pred), ^^Pred, This))) ; throw(error(permission_error(access, private_predicate, Pred), ^^Pred, This))) ; (lgt_built_in(Pred) -> call(Pred) ; throw(error(existence_error(predicate_declaration, Pred), ^^Pred, This)))) ; throw(error(instantiation_error, ^^Pred, This)). lgt_send_to_super_nv(Self, Pred, This, Sender) :- lgt_current_object_(Self, _, Dcl, _, _), (lgt_call(Dcl, Pred, Scope, _, _, SContainer, _) -> ((Scope = p(_); This = SContainer) -> lgt_current_object_(This, _, _, _, Super), lgt_once(Super, Pred, Sender, This, Self, Call, Container), (Container \= This -> call(Call) ; throw(error(endless_loop(Pred), ^^Pred, This))) ; throw(error(permission_error(access, private_predicate, Pred), ^^Pred, This))) ; (lgt_built_in(Pred) -> call(Pred) ; throw(error(existence_error(predicate_declaration, Pred), ^^Pred, This)))). % metacalls in predicate definitions lgt_metacall_in_object(Obj, Pred, Sender) :- var(Pred) -> throw(error(instantiation_error, Obj::call(Pred), Sender)) ; (Obj = user -> call(Pred) ; lgt_current_object_(Obj, Prefix, _, _, _), lgt_prefix(Context, Prefix), lgt_sender(Context, Sender), lgt_this(Context, Obj), lgt_self(Context, Obj), lgt_tr_body(Pred, Call, Context), call(Call)). % needed for runtime translation of dynamic clauses lgt_call_built_in(Pred, Context) :- lgt_sender(Context, Sender), lgt_this(Context, This), lgt_self(Context, Self), lgt_current_object_(This, _, _, Def, _), (lgt_call(Def, Pred, Sender, This, Self, Call) -> call(Call) ; call(Pred)). %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % built-in entities % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % built-in pseudo-object user (representing the Prolog database) lgt_current_object_(user, user0_, user0__dcl, user0__def, _). user0_(user0__dcl, user0__def, _, _, _, _, _). user0__dcl(Pred, p(p(p)), no, Type) :- nonvar(Pred), \+ lgt_built_in(Pred), functor(Pred, Functor, Arity), current_predicate(Functor/Arity), (lgt_predicate_property(Pred, (dynamic)) -> Type = (dynamic) ; Type = static). user0__dcl(Pred, p(p(p)), no, Type) :- var(Pred), current_predicate(Functor/Arity), \+ lgt_hidden_functor(Functor), functor(Pred, Functor, Arity), \+ lgt_built_in(Pred), (lgt_predicate_property(Pred, (dynamic)) -> Type = (dynamic) ; Type = static). user0__dcl(Pred, p(p(p)), Type, Meta, user, user) :- user0__dcl(Pred, p(p(p)), Type, Meta). user0__def(Pred, _, _, _, Pred). user0__def(Pred, _, _, _, Pred, user). % lgt_hidden_functor(+atom) lgt_hidden_functor(Functor) :- atom_concat(lgt_, _, Functor). lgt_hidden_functor(Functor) :- lgt_current_category_(_, Prefix), atom_concat(Prefix, _, Functor). lgt_hidden_functor(Functor) :- lgt_current_object_(_, Prefix, _, _, _), atom_concat(Prefix, _, Functor). lgt_hidden_functor(Functor) :- lgt_current_protocol_(_, Prefix), atom_concat(Prefix, _, Functor). %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % pre-processor - compiles Logtalk source files to Prolog % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % lgt_load_entities(+list) lgt_load_entities([]). lgt_load_entities([Entity| Entities]) :- lgt_load_entity(Entity), lgt_load_entities(Entities). % lgt_load_entity(+atom) lgt_load_entity(Entity) :- lgt_compile_entity(Entity), lgt_file_name(prolog, Entity, File), lgt_load_prolog_code(File), (lgt_compiler_option(report, on) -> writeq(Entity), lgt_entity_(Type, _, _, _), write(' '), write(Type), write(' loaded'), nl ; true). % lgt_compile_entities(+list) lgt_compile_entities([]). lgt_compile_entities([Entity| Entities]) :- lgt_compile_entity(Entity), lgt_compile_entities(Entities). % lgt_compile_entity(+atom) lgt_compile_entity(Entity) :- lgt_tr_entity(Entity), lgt_write_tr_entity(Entity), lgt_write_entity_doc(Entity). % lgt_write_tr_entity(+atom) lgt_write_tr_entity(Entity) :- lgt_file_name(prolog, Entity, File), catch( open(File, write, Stream), Error, lgt_compiler_error_handler(Stream, Error)), catch( (lgt_write_directives(Stream), lgt_write_clauses(Stream), lgt_write_init_call(Stream)), Error, lgt_compiler_error_handler(Stream, Error)), close(Stream). % lgt_write_entity_doc(+atom) lgt_write_entity_doc(Entity) :- lgt_compiler_option(xml, on) -> lgt_file_name(xml, Entity, File), catch( open(File, write, Stream), Error, lgt_compiler_error_handler(Stream, Error)), catch( lgt_write_xml_file(Stream), Error, lgt_compiler_error_handler(Stream, Error)), close(Stream) ; true. % lgt_file_name(+atom, +atom, -atom) lgt_file_name(Type, Entity, File) :- lgt_file_extension(Type, Extension), atom_concat(Entity, Extension, File). % lgt_tr_entity(+atom) lgt_tr_entity(Entity) :- lgt_clean_up, lgt_file_name(logtalk, Entity, File), catch( open(File, read, Stream), Error, lgt_compiler_error_handler(Stream, Error)), catch( (read_term(Stream, Term, [singletons(Singletons)]), lgt_report_singletons(Singletons, Term), lgt_tr_file(Stream, Term)), Error, lgt_compiler_error_handler(Stream, Error)), close(Stream), lgt_fix_redef_built_ins, lgt_find_misspelt_calls, lgt_entity_(Type, _, _, _), lgt_gen_clauses(Type), lgt_gen_directives(Type). lgt_tr_file(_, end_of_file) :- !. lgt_tr_file(Stream, Term) :- lgt_tr_term(Term), read_term(Stream, Next, [singletons(Singletons)]), lgt_report_singletons(Singletons, Next), lgt_tr_file(Stream, Next). % lgt_report_singletons(+list, +term) lgt_report_singletons([], _). lgt_report_singletons([Singleton| Singletons], Term) :- lgt_compiler_option(singletons, warning) -> write('Logtalk compiler warning!'), nl, \+ \+ ( lgt_report_singletons_aux([Singleton| Singletons], Term, Names), write(' singleton variable(s): '), write(Names), nl, write(' in term: '), write(Term), nl, (lgt_entity_(Type, Entity, _, _) -> write(' inside '), write(Type), write(': '), writeq(Entity), nl ; true)) ; true. lgt_report_singletons_aux([], _, []). lgt_report_singletons_aux([Name = Var| Singletons], Term, [Name| Names]) :- Name = Var, lgt_report_singletons_aux(Singletons, Term, Names). lgt_compiler_error_handler(Stream, Error) :- (nonvar(Stream) -> close(Stream) ; true), lgt_report_compiler_error(Error), fail. lgt_report_compiler_error(invalid_directive_arg(Error, Cause, Dir)) :- !, write('Logtalk compiler error!'), nl, write(' invalid argument in directive: '), writeq((:-Dir)), nl, write(' '), write(Error), write(': '), write(Cause), nl, (lgt_entity_(Type, Entity, _, _) -> write(' inside '), write(Type), write(': '), writeq(Entity), nl ; true). lgt_report_compiler_error(invalid_directive(Error, Dir)) :- !, write('Logtalk compiler error!'), nl, write(' invalid or unsupported directive: '), writeq((:-Dir)), nl, write(' '), write(Error), nl, (lgt_entity_(Type, Entity, _, _) -> write(' inside '), write(Type), write(': '), writeq(Entity), nl ; true). lgt_report_compiler_error(invalid_clause(Error, Cause, Clause)) :- !, write('Logtalk compiler error!'), nl, write(' invalid clause: '), writeq(Clause), nl, write(' '), write(Error), write(': '), write(Cause), nl, (lgt_entity_(Type, Entity, _, _) -> write(' inside '), write(Type), write(': '), writeq(Entity), nl ; true). lgt_report_compiler_error(invalid_clause(Error, Clause)) :- !, write('Logtalk compiler error!'), nl, write(' invalid clause: '), writeq(Clause), nl, write(' '), write(Error), nl, (lgt_entity_(Type, Entity, _, _) -> write(' inside '), write(Type), write(': '), writeq(Entity), nl ; true). lgt_report_compiler_error(invalid_clause(Clause)) :- !, write('Logtalk compiler error!'), nl, write(' could not translate clause: '), writeq(Clause), nl, (lgt_entity_(Type, Entity, _, _) -> write(' inside '), write(Type), write(': '), writeq(Entity), nl ; true). lgt_report_compiler_error(Error) :- write('Logtalk compiler error!'), nl, write(' '), writeq(Error), nl, (lgt_entity_(Type, Entity, _, _) -> write(' inside '), write(Type), write(': '), writeq(Entity), nl ; true). % clean up all dynamic predicates used during entity compilation lgt_clean_up :- retractall(lgt_object_(_, _, _, _, _, _, _, _, _)), retractall(lgt_protocol_(_, _, _)), retractall(lgt_category_(_, _, _, _)), retractall(lgt_implemented_protocol_(_, _, _, _)), retractall(lgt_imported_category_(_, _, _, _, _)), retractall(lgt_extended_object_(_, _, _, _, _, _, _, _, _, _)), retractall(lgt_instantiated_class_(_, _, _, _, _, _, _, _, _, _)), retractall(lgt_specialized_class_(_, _, _, _, _, _, _, _, _, _)), retractall(lgt_extended_protocol_(_, _, _, _)), retractall(lgt_uses_(_)), retractall(lgt_calls_(_)), retractall(lgt_info_(_)), retractall(lgt_info_(_, _)), retractall(lgt_directive_(_)), retractall(lgt_public_(_)), retractall(lgt_protected_(_)), retractall(lgt_private_(_)), retractall(lgt_dynamic_(_)), retractall(lgt_discontiguous_(_)), retractall(lgt_mode_(_, _)), retractall(lgt_metapredicate_(_)), retractall(lgt_entity_functors_(_)), retractall(lgt_entity_(_, _, _, _)), retractall(lgt_entity_init_(_)), retractall(lgt_fentity_init_(_)), retractall(lgt_entity_comp_mode_(_)), retractall(lgt_dcl_(_)), retractall(lgt_def_(_)), retractall(lgt_super_(_)), retractall(lgt_rclause_(_)), retractall(lgt_eclause_(_)), retractall(lgt_feclause_(_)), retractall(lgt_redefined_built_in_(_, _, _)), retractall(lgt_defs_pred_(_)), retractall(lgt_calls_pred_(_)). % dump all dynamic predicates used during entity compilation % in the current ouput stream (just a debugging utility) lgt_dump_all :- listing(lgt_object_/9), listing(lgt_protocol_/3), listing(lgt_category_/4), listing(lgt_implemented_protocol_/4), listing(lgt_imported_category_/5), listing(lgt_extended_object_/10), listing(lgt_instantiated_class_/10), listing(lgt_specialized_class_/10), listing(lgt_extended_protocol_/4), listing(lgt_uses_/1), listing(lgt_calls_/1), listing(lgt_info_/1), listing(lgt_info_/2), listing(lgt_directive_/1), listing(lgt_public_/1), listing(lgt_protected_/1), listing(lgt_private_/1), listing(lgt_dynamic_/1), listing(lgt_discontiguous_/1), listing(lgt_mode_/2), listing(lgt_metapredicate_/1), listing(lgt_entity_functors_/1), listing(lgt_entity_/4), listing(lgt_entity_init_/1), listing(lgt_fentity_init_/1), listing(lgt_entity_comp_mode_/1), listing(lgt_dcl_/1), listing(lgt_def_/1), listing(lgt_super_/1), listing(lgt_rclause_/1), listing(lgt_eclause_/1), listing(lgt_feclause_/1), listing(lgt_redefined_built_in_/3), listing(lgt_defs_pred_/1), listing(lgt_calls_pred_/1), listing(lgt_current_compiler_option_/2). % lgt_tr_terms(+list) lgt_tr_terms([]). lgt_tr_terms([Term| Terms]) :- lgt_tr_term(Term), lgt_tr_terms(Terms). % lgt_tr_term(+term) lgt_tr_term((Head:-Body)) :- !, lgt_tr_clause((Head:-Body)). lgt_tr_term((:-Dir)) :- !, lgt_tr_directive(Dir). lgt_tr_term(Fact) :- lgt_tr_clause(Fact). % lgt_tr_directives(+list) lgt_tr_directives([]). lgt_tr_directives([Dir| Dirs]) :- lgt_tr_directive(Dir), lgt_tr_directives(Dirs). % lgt_tr_directive(+term) lgt_tr_directive(Dir) :- var(Dir), throw(invalid_directive(instantiation_error, Dir)). lgt_tr_directive(Dir) :- \+ lgt_entity_(_, _, _, _), % directive occurs before opening entity directive functor(Dir, Functor, Arity), lgt_lgt_closing_directive(Functor/Arity), % opening directive missing/missplet throw(invalid_directive(unmatched_directive_error, Dir)). lgt_tr_directive(Dir) :- \+ lgt_entity_(_, _, _, _), % directive occurs before opening entity directive functor(Dir, Functor, Arity), \+ lgt_lgt_opening_directive(Functor/Arity), !, assertz(lgt_directive_(Dir)). lgt_tr_directive(Dir) :- functor(Dir, Functor, Arity), lgt_lgt_directive(Functor/Arity), Dir =.. [Functor| Args], catch( lgt_tr_directive(Functor, Args), directive_error(Error, Cause), throw(invalid_directive_arg(Error, Cause, Dir))), !. lgt_tr_directive(Dir) :- throw(invalid_directive(unknown_directive_error, Dir)). % lgt_tr_directive(+atom, +list) lgt_tr_directive(object, [Obj| Rels]) :- lgt_valid_object_id(Obj) -> lgt_tr_object_id(Obj), lgt_tr_object_relations(Rels, Obj) ; throw(directive_error(object_identifier, Obj)). lgt_tr_directive(end_object, []) :- lgt_entity_(object, _, _, _). lgt_tr_directive(protocol, [Ptc| Rels]) :- lgt_valid_protocol_id(Ptc) -> lgt_tr_protocol_id(Ptc), lgt_tr_protocol_relations(Rels, Ptc) ; throw(directive_error(protocol_identifier, Ptc)). lgt_tr_directive(end_protocol, []) :- lgt_entity_(protocol, _, _, _). lgt_tr_directive(category, [Ctg| Rels]) :- lgt_valid_category_id(Ctg) -> lgt_tr_category_id(Ctg), lgt_tr_category_relations(Rels, Ctg) ; throw(directive_error(category_identifier, Ctg)). lgt_tr_directive(end_category, []) :- lgt_entity_(category, _, _, _). % dynamic entity directive lgt_tr_directive((dynamic), []) :- assertz(lgt_entity_comp_mode_((dynamic))). lgt_tr_directive(initialization, [Goal]) :- lgt_callable(Goal) -> lgt_entity_(_, Entity, Prefix, _), lgt_prefix(Context, Prefix), lgt_metavars(Context, []), lgt_sender(Context, Entity), lgt_this(Context, Entity), lgt_self(Context, Entity), lgt_tr_body(Goal, TGoal, Context), assertz(lgt_entity_init_(TGoal)) ; throw(directive_error(callable, Goal)). lgt_tr_directive(op, [Priority, Specifier, Operators]) :- lgt_valid_op_priority(Priority) -> (lgt_valid_op_specifier(Specifier) -> (lgt_valid_op_names(Operators) -> op(Priority, Specifier, Operators), assertz(lgt_directive_(op(Priority, Specifier, Operators))) ; throw(directive_error(operator_name, Operators))) ; throw(directive_error(operator_specifier, Specifier))) ; throw(directive_error(operator_priority, Priority)). lgt_tr_directive(uses, Objs) :- lgt_convert_to_list(Objs, Objs2), forall( lgt_member(Obj, Objs2), (lgt_valid_object_id(Obj) -> assertz(lgt_uses_(Obj)) ; throw(directive_error(object_identifier, Obj)))). lgt_tr_directive(calls, Ptcs) :- lgt_convert_to_list(Ptcs, Ptcs2), forall( lgt_member(Ptc, Ptcs2), (lgt_valid_protocol_id(Ptc) -> assertz(lgt_calls_(Ptc)) ; throw(directive_error(protocol_identifier, Ptc)))). lgt_tr_directive(info, [List]) :- !, (lgt_valid_info_list(List) -> assertz(lgt_info_(List)) ; throw(directive_error(type_error(info_list), List))). lgt_tr_directive(info, [Pred, List]) :- (lgt_valid_pred_ind(Pred) -> (lgt_valid_info_list(List) -> assertz(lgt_info_(Pred, List)) ; throw(directive_error(type_error(info_list), List))) ; throw(directive_error(predicate_indicator, Pred))). lgt_tr_directive((public), Preds) :- lgt_convert_to_list(Preds, Preds2), forall( lgt_member(Pred, Preds2), (lgt_valid_pred_ind(Pred) -> assertz(lgt_public_(Pred)) ; throw(directive_error(predicate_indicator, Pred)))). lgt_tr_directive(protected, Preds) :- lgt_convert_to_list(Preds, Preds2), forall( lgt_member(Pred, Preds2), (lgt_valid_pred_ind(Pred) -> assertz(lgt_protected_(Pred)) ; throw(directive_error(predicate_indicator, Pred)))). lgt_tr_directive(private, Preds) :- lgt_convert_to_list(Preds, Preds2), forall( lgt_member(Pred, Preds2), (lgt_valid_pred_ind(Pred) -> assertz(lgt_private_(Pred)) ; throw(directive_error(predicate_indicator, Pred)))). lgt_tr_directive((dynamic), Preds) :- lgt_convert_to_list(Preds, Preds2), forall( lgt_member(Pred, Preds2), (lgt_valid_pred_ind(Pred) -> assertz(lgt_dynamic_(Pred)) ; throw(directive_error(predicate_indicator, Pred)))). lgt_tr_directive((discontiguous), Preds) :- lgt_convert_to_list(Preds, Preds2), forall( lgt_member(Pred, Preds2), (lgt_valid_pred_ind(Pred) -> assertz(lgt_discontiguous_(Pred)) ; throw(directive_error(predicate_indicator, Pred)))). lgt_tr_directive(metapredicate, Preds) :- lgt_convert_to_list(Preds, Preds2), forall( lgt_member(Pred, Preds2), (lgt_valid_metapred_term(Pred) -> assertz(lgt_metapredicate_(Pred)) ; throw(directive_error(metapredicate_term, Pred)))). lgt_tr_directive((mode), [Mode, Solutions]) :- lgt_valid_mode_term(Mode) -> (lgt_valid_number_of_solutions(Solutions) -> assertz(lgt_mode_(Mode, Solutions)) ; throw(directive_error(number_of_solutions, Solutions))) ; throw(directive_error(mode_term, Mode)). % lgt_tr_object_relations(+list, +term) lgt_tr_object_relations([], _). lgt_tr_object_relations([Clause| Clauses], Obj) :- Clause =.. [Functor| Arguments], (lgt_tr_object_relation(Functor, Arguments, Obj) -> lgt_tr_object_relations(Clauses, Obj) ; throw(directive_error(relation_clause, Functor))). % lgt_tr_object_relation(+atom, +list, +term) lgt_tr_object_relation(implements, Ptcs, Obj) :- lgt_convert_to_list(Ptcs, List), lgt_tr_implements_protocol(List, Obj). lgt_tr_object_relation(imports, Ctgs, Obj) :- lgt_convert_to_list(Ctgs, List), lgt_tr_imports_category(List, Obj). lgt_tr_object_relation(instantiates, Classes, Obj) :- lgt_convert_to_list(Classes, List), lgt_tr_instantiates_class(List, Obj). lgt_tr_object_relation(specializes, Superclasses, Class) :- lgt_convert_to_list(Superclasses, List), lgt_tr_specializes_class(List, Class). lgt_tr_object_relation(extends, Parents, Prototype) :- lgt_convert_to_list(Parents, List), lgt_tr_extends_object(List, Prototype). % lgt_tr_protocol_relations(+list, +term) lgt_tr_protocol_relations([], _). lgt_tr_protocol_relations([Clause| Clauses], Obj) :- Clause =.. [Functor| Arguments], lgt_tr_protocol_relation(Functor, Arguments, Obj), lgt_tr_protocol_relations(Clauses, Obj). % lgt_tr_protocol_relation(+atom, +list, +term) lgt_tr_protocol_relation(extends, Ptcs, Ptc) :- !, lgt_convert_to_list(Ptcs, List), lgt_tr_extends_protocol(List, Ptc). lgt_tr_protocol_relation(Unknown, _, _) :- throw(directive_error(relation_clause, Unknown)). % lgt_tr_category_relations(+list, +term) lgt_tr_category_relations([], _). lgt_tr_category_relations([Clause| Clauses], Obj) :- Clause =.. [Functor| Arguments], lgt_tr_category_relation(Functor, Arguments, Obj), lgt_tr_category_relations(Clauses, Obj). % lgt_tr_category_relation(+atom, +list, +term) lgt_tr_category_relation(implements, Ptcs, Ctg) :- !, lgt_convert_to_list(Ptcs, List), lgt_tr_implements_protocol(List, Ctg). lgt_tr_category_relation(Unknown, _, _) :- throw(directive_error(relation_clause, Unknown)). % lgt_tr_clauses(+list) lgt_tr_clauses([]). lgt_tr_clauses([Clause| Clauses]) :- lgt_tr_clause(Clause), lgt_tr_clauses(Clauses). % lgt_tr_clause(+clause) lgt_tr_clause(Clause) :- \+ lgt_entity_(_, _, _, _), % clause occurs before opening entity directive assertz(lgt_feclause_(Clause)), !. lgt_tr_clause(Clause) :- lgt_entity_(_, _, Prefix, _), lgt_prefix(Context, Prefix), catch( lgt_tr_clause(Clause, TClause, Context), clause_error(Error, Cause), throw(invalid_clause(Error, Cause, Clause))), assertz(lgt_eclause_(TClause)), !. lgt_tr_clause(Clause) :- throw(invalid_clause(Clause)). % lgt_tr_clause(+clause, +clause, +term) lgt_tr_clause((Head:-Body), (THead:-TBody), Context) :- !, lgt_extract_metavars(Head, Metavars), lgt_metavars(Context, Metavars), lgt_tr_head(Head, THead, Context), lgt_tr_body(Body, Body2, Context), lgt_simplify_body(Body2, TBody). lgt_tr_clause(Fact, TFact, Context) :- lgt_tr_head(Fact, TFact, Context). % lgt_tr_head(+callable, -callable, +term) lgt_tr_head(Head, _, _) :- lgt_built_in_method(Head, _), functor(Head, Functor, Arity), throw(clause_error(built_in_method_redef_error, Functor/Arity)). lgt_tr_head(Head, _, _) :- lgt_lgt_built_in(Head), lgt_compiler_option(lgtredef, warning), \+ lgt_redefined_built_in_(Head, _, _), % not already reported? functor(Head, Functor, Arity), lgt_entity_(Type, Entity, _, _), write('Logtalk compiler warning!'), nl, write(' redefining a Logtalk built-in predicate: '), writeq(Functor/Arity), nl, write(' inside '), write(Type), write(': '), writeq(Entity), nl, fail. lgt_tr_head(Head, _, _) :- lgt_pl_built_in(Head), lgt_compiler_option(plredef, warning), \+ lgt_redefined_built_in_(Head, _, _), % not already reported? functor(Head, Functor, Arity), lgt_entity_(Type, Entity, _, _), write('Logtalk compiler warning!'), nl, write(' redefining a Prolog built-in predicate: '), writeq(Functor/Arity), nl, write(' inside '), write(Type), write(': '), writeq(Entity), nl, fail. lgt_tr_head(Head, THead, Context) :- functor(Head, Functor, Arity), Head =.. [_| Args], lgt_prefix(Context, EPrefix), lgt_construct_predicate_functor(EPrefix, Functor, Arity, PPrefix), lgt_add_def_clause(Functor, Arity, PPrefix, Context), lgt_sender(Context, Sender), lgt_this(Context, This), lgt_self(Context, Self), lgt_append(Args, [Sender, This, Self], Args2), THead =.. [PPrefix| Args2]. % lgt_tr_body(+callable, -callable, +term) lgt_tr_body(Pred, TPred, Context) :- var(Pred), !, lgt_metavars(Context, Metavars), (lgt_member_var(Pred, Metavars) -> lgt_sender(Context, Sender), TPred = lgt_metacall_in_object(Sender, Pred, Sender) ; lgt_this(Context, This), TPred = lgt_metacall_in_object(This, Pred, This)). lgt_tr_body({Pred}, Pred, _) :- !. lgt_tr_body(Var^Pred, Var^TPred, Context) :- !, lgt_tr_body(Pred, TPred, Context). % control constructs lgt_tr_body((Pred1, Pred2), (TPred1, TPred2), Context) :- !, lgt_tr_body(Pred1, TPred1, Context), lgt_tr_body(Pred2, TPred2, Context). lgt_tr_body((Pred1; Pred2), (TPred1; TPred2), Context) :- !, lgt_tr_body(Pred1, TPred1, Context), lgt_tr_body(Pred2, TPred2, Context). lgt_tr_body((Pred1 -> Pred2), (TPred1 -> TPred2), Context) :- !, lgt_tr_body(Pred1, TPred1, Context), lgt_tr_body(Pred2, TPred2, Context). lgt_tr_body(\+ Pred, \+ TPred, Context) :- !, lgt_tr_body(Pred, TPred, Context). lgt_tr_body(!, !, _) :- !. lgt_tr_body(true, true, _) :- !. lgt_tr_body(fail, fail, _) :- !. lgt_tr_body(repeat, repeat, _) :- !. lgt_tr_body(call(Pred), TPred, Context) :- !, lgt_tr_body(Pred, TPred, Context). lgt_tr_body(once(Pred), once(TPred), Context) :- !, lgt_tr_body(Pred, TPred, Context). lgt_tr_body(catch(Goal, Catcher, Recovery), catch(TGoal, Catcher, TRecovery), Context) :- !, lgt_tr_body(Goal, TGoal, Context), lgt_tr_body(Recovery, TRecovery, Context). lgt_tr_body(throw(Error), throw(Error), _) :- !. % built-in metapredicates lgt_tr_body(bagof(Term, Pred, List), bagof(Term, TPred, List), Context) :- !, lgt_tr_body(Pred, TPred, Context). lgt_tr_body(findall(Term, Pred, List), findall(Term, TPred, List), Context) :- !, lgt_tr_body(Pred, TPred, Context). lgt_tr_body(forall(Generate, Test), forall(TGenerate, TTest), Context) :- !, lgt_tr_body(Generate, TGenerate, Context), lgt_tr_body(Test, TTest, Context). lgt_tr_body(setof(Term, Pred, List), setof(Term, TPred, List), Context) :- !, lgt_tr_body(Pred, TPred, Context). % message sending lgt_tr_body(Obj::Pred, TPred, Context) :- !, lgt_tr_msg(Obj, Pred, TPred, Context). lgt_tr_body(::Pred, TPred, Context) :- !, lgt_tr_self_msg(Pred, TPred, Context). lgt_tr_body(^^Pred, TPred, Context) :- !, lgt_tr_super_sending(Pred, TPred, Context). % "reflection" built-in predicates lgt_tr_body(current_predicate(Pred), lgt_current_predicate(This, Pred, This, _), Context) :- !, lgt_this(Context, This). lgt_tr_body(predicate_property(Pred, Property), lgt_predicate_property(This, Pred, Property, This, _), Context) :- !, lgt_this(Context, This). % database handling built-in predicates lgt_tr_body(abolish(Pred), lgt_abolish(This, Pred, This, _), Context) :- !, lgt_this(Context, This). lgt_tr_body(asserta(Pred), lgt_asserta(This, Pred, This, _), Context) :- !, lgt_this(Context, This). lgt_tr_body(assertz(Pred), lgt_assertz(This, Pred, This, _), Context) :- !, lgt_this(Context, This). lgt_tr_body(clause(Head, Body), lgt_clause(This, Head, Body, This, _), Context) :- !, lgt_this(Context, This). lgt_tr_body(retract(Pred), lgt_retract(This, Pred, This, _), Context) :- !, lgt_this(Context, This). lgt_tr_body(retractall(Pred), lgt_retractall(This, Pred, This, _), Context) :- !, lgt_this(Context, This). % inline methods lgt_tr_body(sender(Sender), true, Context) :- lgt_sender(Context, Sender), !. lgt_tr_body(this(This), true, Context) :- lgt_this(Context, This), !. lgt_tr_body(self(Self), true, Context) :- lgt_self(Context, Self), !. % pre-defined methods lgt_tr_body(parameter(Arg, Value), arg(Arg, This, Value), Context) :- lgt_this(Context, This), !. % Logtalk and Prolog built-in predicates lgt_tr_body(Pred, lgt_call_built_in(Pred, Context), Context) :- lgt_built_in(Pred), !. lgt_tr_body(Pred, _, _) :- \+ lgt_callable(Pred), throw(clause_error(callable, Pred)). lgt_tr_body(Condition, TCondition, Context) :- Condition =.. [Functor|Args], functor(Condition, Functor, Arity), lgt_prefix(Context, EPrefix), lgt_construct_predicate_functor(EPrefix, Functor, Arity, PPrefix), lgt_sender(Context, Sender), lgt_this(Context, This), lgt_self(Context, Self), lgt_append(Args, [Sender, This, Self], Args2), TCondition =.. [PPrefix|Args2], assertz(lgt_calls_pred_(Functor/Arity)). lgt_tr_msg(Obj, Pred, TPred, Context) :- nonvar(Obj), (Obj = (_, _); Obj = (_; _)), !, lgt_tr_msg_broadcasting(Obj, Pred, TPred, Context). lgt_tr_msg(Obj, _, _, _) :- nonvar(Obj), \+ lgt_valid_object_id(Obj), !, throw(clause_error(object_identifier, Obj)). lgt_tr_msg(Obj, Pred, lgt_send_to_object(Obj, Pred, This), Context) :- var(Pred), !, lgt_this(Context, This). % control constructs lgt_tr_msg(Obj, (Pred1, Pred2), (TPred1, TPred2), Context) :- !, lgt_tr_msg(Obj, Pred1, TPred1, Context), lgt_tr_msg(Obj, Pred2, TPred2, Context). lgt_tr_msg(Obj, (Pred1; Pred2), (TPred1; TPred2), Context) :- !, lgt_tr_msg(Obj, Pred1, TPred1, Context), lgt_tr_msg(Obj, Pred2, TPred2, Context). lgt_tr_msg(Obj, (Pred1 -> Pred2), (TPred1 -> TPred2), Context) :- !, lgt_tr_msg(Obj, Pred1, TPred1, Context), lgt_tr_msg(Obj, Pred2, TPred2, Context). lgt_tr_msg(Obj, \+ Pred, \+ TPred, Context) :- !, lgt_tr_msg(Obj, Pred, TPred, Context). lgt_tr_msg(_, !, !, _) :- !. lgt_tr_msg(_, true, true, _) :- !. lgt_tr_msg(_, fail, fail, _) :- !. lgt_tr_msg(_, repeat, repeat, _) :- !. lgt_tr_msg(Obj, call(Pred), TPred, Context) :- !, lgt_tr_msg(Obj, Pred, TPred, Context). lgt_tr_msg(Obj, once(Pred), once(TPred), Context) :- !, lgt_tr_msg(Obj, Pred, TPred, Context). lgt_tr_msg(Obj, catch(Goal, Catcher, Recovery), catch(TGoal, Catcher, TRecovery), Context) :- !, lgt_tr_msg(Obj, Goal, TGoal, Context), lgt_tr_msg(Obj, Recovery, TRecovery, Context). lgt_tr_msg(_, throw(Error), throw(Error), _) :- !. % built-in metapredicates lgt_tr_msg(Obj, bagof(Term, Pred, List), bagof(Term, TPred, List), Context) :- !, lgt_tr_msg(Obj, Pred, TPred, Context). lgt_tr_msg(Obj, findall(Term, Pred, List), findall(Term, TPred, List), Context) :- !, lgt_tr_msg(Obj, Pred, TPred, Context). lgt_tr_msg(Obj, forall(Generate, Test), forall(TGenerate, TTest), Context) :- !, lgt_tr_msg(Obj, Generate, TGenerate, Context), lgt_tr_msg(Obj, Test, TTest, Context). lgt_tr_msg(Obj, setof(Term, Pred, List), setof(Term, TPred, List), Context) :- !, lgt_tr_msg(Obj, Pred, TPred, Context). % "reflection" built-in predicates lgt_tr_msg(Obj, current_predicate(Pred), lgt_current_predicate(Obj, Pred, This, p(p(_))), Context) :- !, lgt_this(Context, This). lgt_tr_msg(Obj, predicate_property(Pred, Property), lgt_predicate_property(Obj, Pred, Property, This, p(p(_))), Context) :- !, lgt_this(Context, This). % database handling built-in predicates lgt_tr_msg(Obj, abolish(Pred), lgt_abolish(Obj, Pred, This, p(p(_))), Context) :- !, lgt_this(Context, This). lgt_tr_msg(Obj, asserta(Pred), lgt_asserta(Obj, Pred, This, p(p(_))), Context) :- !, lgt_this(Context, This). lgt_tr_msg(Obj, assertz(Pred), lgt_assertz(Obj, Pred, This, p(p(_))), Context) :- !, lgt_this(Context, This). lgt_tr_msg(Obj, clause(Head, Body), lgt_clause(Obj, Head, Body, This, p(p(_))), Context) :- !, lgt_this(Context, This). lgt_tr_msg(Obj, retract(Pred), lgt_retract(Obj, Pred, This, p(p(_))), Context) :- !, lgt_this(Context, This). lgt_tr_msg(Obj, retractall(Pred), lgt_retractall(Obj, Pred, This, p(p(_))), Context) :- !, lgt_this(Context, This). lgt_tr_msg(_, Pred, _, _) :- \+ lgt_callable(Pred), throw(clause_error(callable, Pred)). lgt_tr_msg(Obj, Pred, lgt_send_to_object(Obj, Pred, This), Context) :- var(Obj), !, lgt_this(Context, This). lgt_tr_msg(Obj, Pred, lgt_send_to_object_nv(Obj, Pred, This), Context) :- !, lgt_this(Context, This). lgt_tr_self_msg(Pred, lgt_send_to_self(Self, Pred, This), Context) :- var(Pred), !, lgt_this(Context, This), lgt_self(Context, Self). % control constructs lgt_tr_self_msg((Pred1, Pred2), (TPred1, TPred2), Context) :- !, lgt_tr_self_msg(Pred1, TPred1, Context), lgt_tr_self_msg(Pred2, TPred2, Context). lgt_tr_self_msg(((Pred1; Pred2)), (TPred1; TPred2), Context) :- !, lgt_tr_self_msg(Pred1, TPred1, Context), lgt_tr_self_msg(Pred2, TPred2, Context). lgt_tr_self_msg((Pred1 -> Pred2), (TPred1 -> TPred2), Context) :- !, lgt_tr_self_msg(Pred1, TPred1, Context), lgt_tr_self_msg(Pred2, TPred2, Context). lgt_tr_self_msg(\+ Pred, \+ TPred, Context) :- !, lgt_tr_self_msg(Pred, TPred, Context). lgt_tr_self_msg(!, !, _) :- !. lgt_tr_self_msg(true, true, _) :- !. lgt_tr_self_msg(fail, fail, _) :- !. lgt_tr_self_msg(repeat, repeat, _) :- !. lgt_tr_self_msg(call(Pred), TPred, Context) :- !, lgt_tr_self_msg(Pred, TPred, Context). lgt_tr_self_msg(once(Pred), once(TPred), Context) :- !, lgt_tr_self_msg(Pred, TPred, Context). lgt_tr_self_msg(catch(Goal, Catcher, Recovery), catch(TGoal, Catcher, TRecovery), Context) :- !, lgt_tr_self_msg(Goal, TGoal, Context), lgt_tr_self_msg(Recovery, TRecovery, Context). lgt_tr_self_msg(throw(Error), throw(Error), _) :- !. % built-in metapredicates lgt_tr_self_msg(bagof(Term, Pred, List), bagof(Term, TPred, List), Context) :- !, lgt_tr_self_msg(Pred, TPred, Context). lgt_tr_self_msg(findall(Term, Pred, List), findall(Term, TPred, List), Context) :- !, lgt_tr_self_msg(Pred, TPred, Context). lgt_tr_self_msg(forall(Generate, Test), forall(TGenerate, TTest), Context) :- !, lgt_tr_self_msg(Generate, TGenerate, Context), lgt_tr_self_msg(Test, TTest, Context). lgt_tr_self_msg(setof(Term, Pred, List), setof(Term, TPred, List), Context) :- !, lgt_tr_self_msg(Pred, TPred, Context). % "reflection" built-in predicates lgt_tr_self_msg(current_predicate(Pred), lgt_current_predicate(Self, Pred, This, p(_)), Context) :- !, lgt_self(Context, Self), lgt_this(Context, This). lgt_tr_self_msg(predicate_property(Pred, Property), lgt_predicate_property(Self, Pred, Property, This, p(_)), Context) :- !, lgt_self(Context, Self), lgt_this(Context, This). % database handling built-in predicates lgt_tr_self_msg(abolish(Pred), lgt_abolish(Self, Pred, This, p(_)), Context) :- !, lgt_self(Context, Self), lgt_this(Context, This). lgt_tr_self_msg(asserta(Pred), lgt_asserta(Self, Pred, This, p(_)), Context) :- !, lgt_self(Context, Self), lgt_this(Context, This). lgt_tr_self_msg(assertz(Pred), lgt_assertz(Self, Pred, This, p(_)), Context) :- !, lgt_self(Context, Self), lgt_this(Context, This). lgt_tr_self_msg(clause(Head, Body), lgt_clause(Self, Head, Body, This, p(_)), Context) :- !, lgt_self(Context, Self), lgt_this(Context, This). lgt_tr_self_msg(retract(Pred), lgt_retract(Self, Pred, This, p(_)), Context) :- !, lgt_self(Context, Self), lgt_this(Context, This). lgt_tr_self_msg(retractall(Pred), lgt_retractall(Self, Pred, This, p(_)), Context) :- !, lgt_self(Context, Self), lgt_this(Context, This). lgt_tr_self_msg(Pred, _, _) :- \+ lgt_callable(Pred), throw(clause_error(callable, Pred)). lgt_tr_self_msg(Pred, lgt_send_to_self_nv(Self, Pred, This), Context) :- !, lgt_self(Context, Self), lgt_this(Context, This). % message broadcasting lgt_tr_msg_broadcasting((Obj1, Obj2), Pred, (TP1, TP2), Context) :- !, lgt_tr_msg(Obj1, Pred, TP1, Context), lgt_tr_msg(Obj2, Pred, TP2, Context). lgt_tr_msg_broadcasting((Obj1; Obj2), Pred, (TP1; TP2), Context) :- !, lgt_tr_msg(Obj1, Pred, TP1, Context), lgt_tr_msg(Obj2, Pred, TP2, Context). % calling redefined predicates (super) lgt_tr_super_sending(Pred, _, _) :- nonvar(Pred), \+ lgt_callable(Pred), throw(clause_error(callable, Pred)). lgt_tr_super_sending(Pred, lgt_send_to_super(Self, Pred, This, Sender), Context) :- var(Pred), !, lgt_self(Context, Self), lgt_this(Context, This), lgt_sender(Context, Sender). lgt_tr_super_sending(Pred, lgt_send_to_super_nv(Self, Pred, This, Sender), Context) :- lgt_self(Context, Self), lgt_this(Context, This), lgt_sender(Context, Sender). % lgt_extract_metavars(+callable, -list) lgt_extract_metavars(Pred, Metavars) :- functor(Pred, Functor, Arity), functor(Meta, Functor, Arity), (lgt_metapredicate_(Meta) -> Pred =.. [_| Args], Meta =.. [_| MArgs], lgt_extract_metavars(Args, MArgs, Metavars) ; Metavars = []). % lgt_extract_metavars(+list, +list, -list) % % constructs a list of all variables that occur % in a position corresponding to a meta-argument lgt_extract_metavars([], [], []). lgt_extract_metavars([Var| Args], [MArg| MArgs], [Var| Metavars]) :- var(Var), MArg = (::), !, lgt_extract_metavars(Args, MArgs, Metavars). lgt_extract_metavars([_| Args], [_| MArgs], Metavars) :- lgt_extract_metavars(Args, MArgs, Metavars). % remove redundant calls to true/0 from a clause body % % lgt_simplify_body(+callable, -callable) lgt_simplify_body((A;B), (SA;SB)) :- !, lgt_simplify_body(A, SA), lgt_simplify_body(B, SB). lgt_simplify_body((A->B), (SA->SB)) :- !, lgt_simplify_body(A, SA), lgt_simplify_body(B, SB). lgt_simplify_body((true, B), SB) :- !, lgt_simplify_body(B, SB). lgt_simplify_body((B, true), SB) :- !, lgt_simplify_body(B, SB). lgt_simplify_body((A, B), (SA, SB)) :- !, lgt_simplify_body(A, SA), lgt_simplify_body(B, SB). lgt_simplify_body(B, B). % lgt_tr_object_id(+callable) lgt_tr_object_id(Obj) :- lgt_construct_object_functors(Obj, Prefix, Dcl, Def, Super, SDcl, SDef, DDcl, DDef), assertz(lgt_object_(Obj, Prefix, Dcl, Def, Super, SDcl, SDef, DDcl, DDef)), Term =.. [Prefix, Dcl, Def, Super, SDcl, SDef, DDcl, DDef], assertz(lgt_entity_functors_(Term)), assertz(lgt_rclause_(lgt_current_object_(Obj, Prefix, Dcl, Def, Super))), assertz(lgt_entity_(object, Obj, Prefix, Dcl)). % lgt_tr_category_id(+callable) lgt_tr_category_id(Ctg) :- lgt_construct_category_functors(Ctg, Prefix, Dcl, Def), assertz(lgt_category_(Ctg, Prefix, Dcl, Def)), Term =.. [Prefix, Dcl, Def], assertz(lgt_entity_functors_(Term)), assertz(lgt_rclause_(lgt_current_category_(Ctg, Prefix))), assertz(lgt_entity_(category, Ctg, Prefix, Dcl)). % lgt_tr_protocol_id(+atom) lgt_tr_protocol_id(Ptc) :- lgt_construct_protocol_functors(Ptc, Prefix, Dcl), assertz(lgt_protocol_(Ptc, Prefix, Dcl)), Term =.. [Prefix, Dcl], assertz(lgt_entity_functors_(Term)), assertz(lgt_rclause_(lgt_current_protocol_(Ptc, Prefix))), assertz(lgt_entity_(protocol, Ptc, Prefix, Dcl)). % lgt_tr_implements_protocol(+list, +identifier) lgt_tr_implements_protocol([], _). lgt_tr_implements_protocol([Ref| Refs], ObjOrCtg) :- lgt_valid_entity_scope(Ref) -> (lgt_scope_id(Ref, Scope, Ptc), (lgt_valid_protocol_id(Ptc) -> assertz(lgt_rclause_(lgt_implements_protocol_(ObjOrCtg, Ptc, Scope))), lgt_construct_protocol_functors(Ptc, Prefix, Dcl), assertz(lgt_implemented_protocol_(Ptc, Prefix, Dcl, Scope)), lgt_tr_implements_protocol(Refs, ObjOrCtg) ; throw(directive_error(protocol_identifier, Ptc)))) ; throw(directive_error(entity_scope, Ref)). % lgt_tr_imports_category(+list, +identifier) lgt_tr_imports_category([], _). lgt_tr_imports_category([Ref| Refs], Obj) :- lgt_valid_entity_scope(Ref) -> (lgt_scope_id(Ref, Scope, Ctg), (lgt_valid_category_id(Ctg) -> assertz(lgt_rclause_(lgt_imports_category_(Obj, Ctg, Scope))), lgt_construct_category_functors(Ctg, Prefix, Dcl, Def), assertz(lgt_imported_category_(Ctg, Prefix, Dcl, Def, Scope)), lgt_tr_imports_category(Refs, Obj) ; throw(directive_error(category_identifier, Ctg)))) ; throw(directive_error(entity_scope, Ref)). % lgt_tr_instantiates_class(+list, +identifier) lgt_tr_instantiates_class([], _). lgt_tr_instantiates_class([Ref| Refs], Obj) :- lgt_valid_entity_scope(Ref) -> (lgt_scope_id(Ref, Scope, Class), (lgt_valid_object_id(Class) -> assertz(lgt_rclause_(lgt_instantiates_class_(Obj, Class, Scope))), lgt_construct_object_functors(Class, Prefix, Dcl, Def, Super, SDcl, SDef, DDcl, DDef), assertz(lgt_instantiated_class_(Class, Prefix, Dcl, Def, Super, SDcl, SDef, DDcl, DDef, Scope)), lgt_tr_instantiates_class(Refs, Obj) ; throw(directive_error(object_identifier, Class)))) ; throw(directive_error(entity_scope, Ref)). % lgt_tr_specializes_class(+list, +identifier) lgt_tr_specializes_class([], _). lgt_tr_specializes_class([Ref| Refs], Class) :- lgt_valid_entity_scope(Ref) -> (lgt_scope_id(Ref, Scope, Superclass), (lgt_valid_object_id(Superclass) -> assertz(lgt_rclause_(lgt_specializes_class_(Class, Superclass, Scope))), lgt_construct_object_functors(Superclass, Prefix, Dcl, Def, Super, SDcl, SDef, DDcl, DDef), assertz(lgt_specialized_class_(Superclass, Prefix, Dcl, Def, Super, SDcl, SDef, DDcl, DDef, Scope)), lgt_tr_specializes_class(Refs, Class) ; throw(directive_error(object_identifier, Superclass)))) ; throw(directive_error(entity_scope, Ref)). % lgt_tr_extends_object(+list, +identifier) lgt_tr_extends_object([], _). lgt_tr_extends_object([Ref| Refs], Obj) :- lgt_valid_entity_scope(Ref) -> (lgt_scope_id(Ref, Scope, Parent), (lgt_valid_object_id(Parent) -> assertz(lgt_rclause_(lgt_extends_object_(Obj, Parent, Scope))), lgt_construct_object_functors(Parent, Prefix, Dcl, Def, Super, SDcl, SDef, DDcl, DDef), assertz(lgt_extended_object_(Parent, Prefix, Dcl, Def, Super, SDcl, SDef, DDcl, DDef, Scope)), lgt_tr_extends_object(Refs, Obj) ; throw(directive_error(object_identifier, Parent)))) ; throw(directive_error(entity_scope, Ref)). % lgt_tr_extends_protocol(+list, +identifier) lgt_tr_extends_protocol([], _). lgt_tr_extends_protocol([Ref| Refs], Ptc1) :- lgt_valid_entity_scope(Ref) -> (lgt_scope_id(Ref, Scope, Ptc2), (lgt_valid_protocol_id(Ptc2) -> assertz(lgt_rclause_(lgt_extends_protocol_(Ptc1, Ptc2, Scope))), lgt_construct_protocol_functors(Ptc2, Prefix, Dcl), assertz(lgt_extended_protocol_(Ptc2, Prefix, Dcl, Scope)), lgt_tr_extends_protocol(Refs, Ptc1) ; throw(directive_error(protocol_identifier, Ptc2)))) ; throw(directive_error(entity_scope, Ref)). % lgt_add_def_clause(+atom, +integer, +atom, +term) lgt_add_def_clause(Functor, Arity, Prefix, Context) :- functor(Head, Functor, Arity), Head =.. [_| Args], lgt_sender(Context, Sender), lgt_this(Context, This), lgt_self(Context, Self), lgt_append(Args, [Sender, This, Self], TArgs), THead =.. [Prefix|TArgs], once( (lgt_object_(_, _, _, Def, _, _, _, _, _); lgt_category_(_, _, _, Def))), Clause =.. [Def, Head, Sender, This, Self, THead], (lgt_def_(Clause) -> true ; assertz(lgt_def_(Clause))), (lgt_built_in(Head) -> assertz(lgt_redefined_built_in_(Head, Context, THead)) ; true), (lgt_defs_pred_(Functor/Arity) -> true ; assertz(lgt_defs_pred_(Functor/Arity))). % lgt_assert_dynamic_def_clause(+atom, +integer, +atom, +atom, -callable) lgt_assert_dynamic_def_clause(Functor, Arity, OPrefix, DDef, Call) :- lgt_construct_predicate_functor(OPrefix, Functor, Arity, PPrefix), functor(Pred, Functor, Arity), Pred =.. [_| Args], lgt_append(Args, [Sender, This, Self], TArgs), Call =.. [PPrefix|TArgs], Clause =.. [DDef, Pred, Sender, This, Self, Call], assertz(Clause). % lgt_assert_dynamic_dcl_clause(+term, +atom) lgt_assert_dynamic_dcl_clause(Pred, DDcl) :- functor(Pred, Functor, Arity), functor(DPred, Functor, Arity), Clause =.. [DDcl, DPred, p(p(p)), (dynamic), no], assertz(Clause). % lgt_gen_directives(+atom) lgt_gen_directives(object) :- lgt_gen_object_directives. lgt_gen_directives(category) :- lgt_gen_category_directives. lgt_gen_directives(protocol) :- lgt_gen_protocol_directives. lgt_gen_object_directives :- lgt_gen_object_dynamic_directives, lgt_gen_object_discontiguous_directives. lgt_gen_category_directives :- lgt_gen_category_dynamic_directives, lgt_gen_category_discontiguous_directives. lgt_gen_protocol_directives :- lgt_entity_comp_mode_((dynamic)) -> lgt_protocol_(_, Prefix, Dcl), assertz(lgt_directive_(dynamic(Prefix/1))), assertz(lgt_directive_(dynamic(Dcl/4))), assertz(lgt_directive_(dynamic(Dcl/5))) ; true. lgt_gen_object_dynamic_directives :- lgt_object_(_, Prefix, Dcl, Def, Super, SDcl, SDef, DDcl, DDef), assertz(lgt_directive_(dynamic(DDcl/4))), assertz(lgt_directive_(dynamic(DDef/5))), lgt_entity_comp_mode_((dynamic)), !, assertz(lgt_directive_(dynamic(Prefix/7))), assertz(lgt_directive_(dynamic(Dcl/4))), assertz(lgt_directive_(dynamic(Dcl/6))), assertz(lgt_directive_(dynamic(Def/5))), assertz(lgt_directive_(dynamic(Def/6))), assertz(lgt_directive_(dynamic(Super/6))), assertz(lgt_directive_(dynamic(SDcl/6))), assertz(lgt_directive_(dynamic(SDef/6))), forall( (lgt_def_(Clause), Clause \= (_ :- _)), (arg(5, Clause, Call), functor(Call, Functor, Arity), assertz(lgt_directive_(dynamic(Functor/Arity))))). lgt_gen_object_dynamic_directives :- lgt_object_(_, _, _, Def, _, _, _, _, _), lgt_dynamic_(Functor/Arity), functor(Pred, Functor, Arity), Clause =.. [Def, Pred, _, _, _, TPred], lgt_def_(Clause), functor(TPred, TFunctor, TArity), assertz(lgt_directive_(dynamic(TFunctor/TArity))), fail. lgt_gen_object_dynamic_directives. lgt_gen_object_discontiguous_directives :- lgt_object_(_, _, _, Def, _, _, _, _, _), lgt_discontiguous_(Functor/Arity), functor(Pred, Functor, Arity), Clause =.. [Def, Pred, _, _, _, TPred], lgt_def_(Clause), functor(TPred, TFunctor, TArity), assertz(lgt_directive_(discontiguous(TFunctor/TArity))), fail. lgt_gen_object_discontiguous_directives. lgt_gen_category_dynamic_directives :- lgt_entity_comp_mode_((dynamic)) -> lgt_category_(_, Prefix, Dcl, Def), assertz(lgt_directive_(dynamic(Prefix/2))), assertz(lgt_directive_(dynamic(Dcl/4))), assertz(lgt_directive_(dynamic(Dcl/5))), assertz(lgt_directive_(dynamic(Def/5))), forall( (lgt_def_(Clause), Clause \= (_ :- _)), (arg(5, Clause, Call), functor(Call, Functor, Arity), assertz(lgt_directive_(dynamic(Functor/Arity))))) ; true. lgt_gen_category_discontiguous_directives :- lgt_category_(_, _, _, Def), lgt_discontiguous_(Functor/Arity), functor(Pred, Functor, Arity), Clause =.. [Def, Pred, _, _, _, TPred], lgt_def_(Clause), functor(TPred, TFunctor, TArity), assertz(lgt_directive_(discontiguous(TFunctor/TArity))), fail. lgt_gen_category_discontiguous_directives. % lgt_gen_clauses(+atom) lgt_gen_clauses(object) :- lgt_gen_object_clauses. lgt_gen_clauses(protocol) :- lgt_gen_protocol_clauses. lgt_gen_clauses(category) :- lgt_gen_category_clauses. lgt_gen_object_clauses :- (lgt_rclause_(lgt_instantiates_class_(_, _, _)); lgt_rclause_(lgt_specializes_class_(_, _, _))) -> lgt_gen_ic_clauses ; lgt_gen_prototype_clauses. % a (local) predicate declaration is only generated % if there is a scope declaration for the predicate lgt_gen_local_dcl_clauses :- lgt_entity_(_, _, _, Dcl), ((lgt_public_(Functor/Arity), Scope = p(p(p))); (lgt_protected_(Functor/Arity), Scope = p(p)); (lgt_private_(Functor/Arity), Scope = p)), ((lgt_entity_comp_mode_((dynamic)); lgt_dynamic_(Functor/Arity)) -> Compilation = (dynamic); Compilation = static), functor(Meta, Functor, Arity), (lgt_metapredicate_(Meta) -> Meta2 = Meta; Meta2 = no), functor(Pred, Functor, Arity), Fact =.. [Dcl, Pred, Scope, Compilation, Meta2], assertz(lgt_dcl_(Fact)), fail. lgt_gen_local_dcl_clauses. lgt_gen_dynamic_def_clauses :- lgt_entity_(_, _, EPrefix, _), lgt_dynamic_(Functor/Arity), \+ lgt_defs_pred_(Functor/Arity), lgt_construct_predicate_functor(EPrefix, Functor, Arity, PPrefix), lgt_context(Context), lgt_add_def_clause(Functor, Arity, PPrefix, Context), fail. lgt_gen_dynamic_def_clauses. lgt_gen_protocol_clauses :- lgt_gen_protocol_local_clauses, lgt_gen_protocol_linking_clauses, lgt_gen_protocol_extend_clauses. lgt_gen_protocol_local_clauses :- lgt_gen_local_dcl_clauses, (\+ lgt_dcl_(_) -> lgt_protocol_(_, _, PDcl), Head =.. [PDcl, _, _, _, _], assertz(lgt_dcl_((Head:-fail))) ; true). lgt_gen_protocol_linking_clauses :- lgt_protocol_(Ptc, _, PDcl), Head =.. [PDcl, Pred, Scope, Compilation, Meta, Ptc], Body =.. [PDcl, Pred, Scope, Compilation, Meta], assertz(lgt_dcl_((Head:-Body))). lgt_gen_protocol_extend_clauses :- lgt_protocol_(_, _, PDcl1), Head =.. [PDcl1, Pred, Scope, Compilation, Meta, Container], lgt_extended_protocol_(_, _, PDcl2, EScope), (EScope = (public) -> Body =.. [PDcl2, Pred, Scope, Compilation, Meta, Container] ; (EScope = protected -> Call =.. [PDcl2, Pred, Scope2, Compilation, Meta, Container], Body = (Call, (Scope2 = p -> Scope = p; Scope = p(p))) ; Scope = p, Body =.. [PDcl2, Pred, _, Compilation, Meta, Container])), assertz(lgt_dcl_((Head:-Body))), fail. lgt_gen_protocol_extend_clauses. lgt_gen_category_clauses :- lgt_gen_category_dcl_clauses, lgt_gen_category_def_clauses. lgt_gen_category_dcl_clauses :- lgt_gen_category_local_dcl_clauses, lgt_gen_category_linking_dcl_clauses, lgt_gen_category_implements_dcl_clauses. lgt_gen_category_local_dcl_clauses :- lgt_gen_local_dcl_clauses, (\+ lgt_dcl_(_) -> lgt_category_(_, _, CDcl, _), Head =.. [CDcl, _, _, _, _], assertz(lgt_dcl_((Head:-fail))) ; true). lgt_gen_category_linking_dcl_clauses :- lgt_category_(Ctg, _, CDcl, _), Head =.. [CDcl, Pred, Scope, Compilation, Meta, Ctg], Body =.. [CDcl, Pred, Scope, Compilation, Meta], assertz(lgt_dcl_((Head:-Body))). lgt_gen_category_implements_dcl_clauses :- lgt_category_(_, _, CDcl, _), Head =.. [CDcl, Pred, Scope, Compilation, Meta, Container], lgt_implemented_protocol_(_, _, PDcl, EScope), (EScope = (public) -> Body =.. [PDcl, Pred, Scope, Compilation, Meta, Container] ; (EScope = protected -> Call =.. [PDcl, Pred, Scope2, Compilation, Meta, Container], Body = (Call, (Scope2 = p -> Scope = p; Scope = p(p))) ; Scope = p, Body =.. [PDcl, Pred, _, Compilation, Meta, Container])), assertz(lgt_dcl_((Head:-Body))), fail. lgt_gen_category_implements_dcl_clauses. lgt_gen_category_def_clauses :- lgt_gen_category_local_def_clauses. lgt_gen_category_local_def_clauses :- \+ lgt_def_(_) -> lgt_category_(_, _, _, CDef), Head =.. [CDef, _, _, _, _, _], assertz(lgt_def_((Head:-fail))) ; true. lgt_gen_prototype_clauses :- lgt_gen_prototype_dcl_clauses, lgt_gen_prototype_def_clauses, lgt_gen_prototype_super_clauses. lgt_gen_prototype_dcl_clauses :- lgt_gen_prototype_local_dcl_clauses, lgt_gen_prototype_linking_dcl_clauses, lgt_gen_prototype_implements_dcl_clauses, lgt_gen_prototype_imports_dcl_clauses, lgt_gen_prototype_extends_dcl_clauses. lgt_gen_prototype_local_dcl_clauses :- lgt_gen_local_dcl_clauses, (\+ lgt_dcl_(_) -> lgt_object_(_, _, ODcl, _, _, _, _, _, _), Head =.. [ODcl, _, _, _, _], assertz(lgt_dcl_((Head:-fail))) ; true). lgt_gen_prototype_linking_dcl_clauses :- lgt_object_(Obj, _, Dcl, _, _, _, _, DDcl, _), Head =.. [Dcl, Pred, Scope, Compilation, Meta, Obj, Obj], Body =.. [Dcl, Pred, Scope, Compilation, Meta], assertz(lgt_dcl_((Head:-Body))), Body2 =.. [DDcl, Pred, Scope, Compilation, Meta], assertz(lgt_dcl_((Head:-Body2))). lgt_gen_prototype_implements_dcl_clauses :- lgt_object_(Obj, _, ODcl, _, _, _, _, _, _), Head =.. [ODcl, Pred, Scope, Compilation, Meta, Obj, Container], lgt_implemented_protocol_(_, _, PDcl, EScope), (EScope = (public) -> Body =.. [PDcl, Pred, Scope, Compilation, Meta, Container] ; (EScope = protected -> Call =.. [PDcl, Pred, Scope2, Compilation, Meta, Container], Body = (Call, (Scope2 = p -> Scope = p; Scope = p(p))) ; Scope = p, Body =.. [PDcl, Pred, _, Compilation, Meta, Container])), assertz(lgt_dcl_((Head:-Body))), fail. lgt_gen_prototype_implements_dcl_clauses. lgt_gen_prototype_imports_dcl_clauses :- lgt_object_(Obj, _, ODcl, _, _, _, _, _, _), Head =.. [ODcl, Pred, Scope, Compilation, Meta, Obj, Container], lgt_imported_category_(_, _, CDcl, _, EScope), (EScope = (public) -> Body =.. [CDcl, Pred, Scope, Compilation, Meta, Container] ; (EScope = protected -> Call =.. [CDcl, Pred, Scope2, Compilation, Meta, Container], Body = (Call, (Scope2 = p -> Scope = p; Scope = p(p))) ; Scope = p, Body =.. [CDcl, Pred, _, Compilation, Meta, Container])), assertz(lgt_dcl_((Head:-Body))), fail. lgt_gen_prototype_imports_dcl_clauses. lgt_gen_prototype_extends_dcl_clauses :- lgt_object_(Obj, _, ODcl, _, _, _, _, _, _), Head =.. [ODcl, Pred, Scope, Compilation, Meta, SContainer, TContainer], lgt_extended_object_(_, _, PDcl, _, _, _, _, _, _, EScope), (EScope = (public) -> Body =.. [PDcl, Pred, Scope, Compilation, Meta, SContainer, TContainer] ; (EScope = protected -> Call =.. [PDcl, Pred, Scope2, Compilation, Meta, SContainer, TContainer], Body = (Call, (Scope2 = p -> Scope = p; Scope = p(p))) ; Scope = p, Call =.. [PDcl, Pred, Scope2, Compilation, Meta, SContainer2, TContainer], Body = (Call, (Scope2 = p -> SContainer = SContainer2; SContainer = Obj)))), assertz(lgt_dcl_((Head:-Body))), fail. lgt_gen_prototype_extends_dcl_clauses. lgt_gen_prototype_def_clauses :- lgt_gen_dynamic_def_clauses, lgt_gen_prototype_local_def_clauses, lgt_gen_prototype_linking_def_clauses, lgt_gen_prototype_imports_def_clauses, lgt_gen_prototype_extends_def_clauses. lgt_gen_prototype_local_def_clauses :- \+ lgt_def_(_) -> lgt_object_(_, _, _, Def, _, _, _, _, _), Head =.. [Def, _, _, _, _, _], assertz(lgt_def_((Head:-fail))) ; true. lgt_gen_prototype_linking_def_clauses :- lgt_object_(Obj, _, _, Def, _, _, _, _, DDef), Head =.. [Def, Pred, Sender, This, Self, Call, Obj], Body =.. [Def, Pred, Sender, This, Self, Call], assertz(lgt_def_((Head:-Body))), Body2 =.. [DDef, Pred, Sender, This, Self, Call], assertz(lgt_def_((Head:-Body2))). lgt_gen_prototype_imports_def_clauses :- lgt_object_(Obj, _, _, ODef, _, _, _, _, _), lgt_rclause_(lgt_imports_category_(Obj, Ctg, _)), Head =.. [ODef, Pred, Sender, Obj, Self, Call, Ctg], lgt_imported_category_(Ctg, _, _, CDef, _), Body =.. [CDef, Pred, Sender, Obj, Self, Call], assertz(lgt_def_((Head:-Body))), fail. lgt_gen_prototype_imports_def_clauses. lgt_gen_prototype_extends_def_clauses :- lgt_object_(Obj, _, _, ODef, _, _, _, _, _), lgt_rclause_(lgt_extends_object_(Obj, Parent, _)), Head =.. [ODef, Pred, Sender, Obj, Self, Call, Container], lgt_extended_object_(Parent, _, _, PDef, _, _, _, _, _, _), Body =.. [PDef, Pred, Sender, Parent, Self, Call, Container], assertz(lgt_def_((Head:-Body))), fail. lgt_gen_prototype_extends_def_clauses. % we can have a root object where super have nowhere to go ... lgt_gen_prototype_super_clauses :- lgt_object_(Obj, _, _, _, OSuper, _, _, _, _), \+ lgt_rclause_(lgt_extends_object_(Obj, _, _)), Head =.. [OSuper, _, _, _, _, _, _], assertz(lgt_def_((Head:-fail))), !. % ... or we may extends some objects lgt_gen_prototype_super_clauses :- lgt_object_(Obj, _, _, _, OSuper, _, _, _, _), lgt_rclause_(lgt_extends_object_(Obj, Parent, _)), Head =.. [OSuper, Pred, Sender, Obj, Self, Call, Container], lgt_extended_object_(Parent, _, _, PDef, _, _, _, _, _, _), Body =.. [PDef, Pred, Sender, Parent, Self, Call, Container], assertz(lgt_def_((Head:-Body))), fail. lgt_gen_prototype_super_clauses. lgt_gen_ic_clauses :- lgt_gen_ic_dcl_clauses, lgt_gen_ic_sdcl_clauses, lgt_gen_ic_def_clauses, lgt_gen_ic_sdef_clauses, lgt_gen_ic_super_clauses. lgt_gen_ic_dcl_clauses :- lgt_gen_ic_local_dcl_clauses, lgt_gen_ic_hierarchy_dcl_clauses. lgt_gen_ic_local_dcl_clauses :- lgt_gen_local_dcl_clauses, (\+ lgt_dcl_(_) -> lgt_object_(_, _, ODcl, _, _, _, _, _, _), Head =.. [ODcl, _, _, _, _], assertz(lgt_dcl_((Head:-fail))) ; true). lgt_gen_ic_hierarchy_dcl_clauses :- \+ lgt_instantiated_class_(_, _, _, _, _, _, _, _, _, _), !, lgt_object_(_, _, ODcl, _, _, _, _, _, _), Head =.. [ODcl, _, _, _, _, _, _], assertz(lgt_dcl_((Head:-fail))). lgt_gen_ic_hierarchy_dcl_clauses :- lgt_object_(Obj, _, ODcl, _, _, _, _, _, _), Head =.. [ODcl, Pred, Scope, Compilation, Meta, SContainer, TContainer], lgt_instantiated_class_(_, _, _, _, _, CSDcl, _, _, _, EScope), (EScope = (public) -> Body =.. [CSDcl, Pred, Scope, Compilation, Meta, SContainer, TContainer] ; (EScope = protected -> Call =.. [CSDcl, Pred, Scope2, Compilation, Meta, SContainer, TContainer], Body = (Call, (Scope2 = p -> Scope = p; Scope = p(p))) ; Scope = p, Call =.. [CSDcl, Pred, Scope2, Compilation, Meta, SContainer2, TContainer], Body = (Call, (Scope2 = p -> SContainer = SContainer2; SContainer = Obj)))), assertz(lgt_dcl_((Head:-Body))), fail. lgt_gen_ic_hierarchy_dcl_clauses. lgt_gen_ic_sdcl_clauses :- lgt_gen_ic_linking_sdcl_clauses, lgt_gen_ic_protocol_sdcl_clauses, lgt_gen_ic_category_sdcl_clauses, lgt_gen_ic_hierarchy_sdcl_clauses. lgt_gen_ic_linking_sdcl_clauses :- lgt_object_(Obj, _, Dcl, _, _, SDcl, _, DDcl, _), Head =.. [SDcl, Pred, Scope, Compilation, Meta, Obj, Obj], Body =.. [Dcl, Pred, Scope, Compilation, Meta], assertz(lgt_dcl_((Head:-Body))), Body2 =.. [DDcl, Pred, Scope, Compilation, Meta], assertz(lgt_dcl_((Head:-Body2))). lgt_gen_ic_protocol_sdcl_clauses :- lgt_object_(Obj, _, _, _, _, OSDcl, _, _, _), Head =.. [OSDcl, Pred, Scope, Compilation, Meta, Obj, Container], lgt_implemented_protocol_(_, _, PDcl, EScope), (EScope = (public) -> Body =.. [PDcl, Pred, Scope, Compilation, Meta, Container] ; (EScope = protected -> Call =.. [PDcl, Pred, Scope2, Compilation, Meta, Container], Body = (Call, (Scope2 = p -> Scope = p; Scope = p(p))) ; Scope = p, Body =.. [PDcl, Pred, _, Compilation, Meta, Container])), assertz(lgt_dcl_((Head:-Body))), fail. lgt_gen_ic_protocol_sdcl_clauses. lgt_gen_ic_category_sdcl_clauses :- lgt_object_(Obj, _, _, _, _, OSDcl, _, _, _), Head =.. [OSDcl, Pred, Scope, Compilation, Meta, Obj, Container], lgt_imported_category_(_, _, CDcl, _, EScope), (EScope = (public) -> Body =.. [CDcl, Pred, Scope, Compilation, Meta, Container] ; (EScope = protected -> Call =.. [CDcl, Pred, Scope2, Compilation, Meta, Container], Body = (Call, (Scope2 = p -> Scope = p; Scope = p(p))) ; Scope = p, Body =.. [CDcl, Pred, _, Compilation, Meta, Container])), assertz(lgt_dcl_((Head:-Body))), fail. lgt_gen_ic_category_sdcl_clauses. lgt_gen_ic_hierarchy_sdcl_clauses :- lgt_object_(Obj, _, _, _, _, CSDcl, _, _, _), Head =.. [CSDcl, Pred, Scope, Compilation, Meta, SContainer, TContainer], lgt_specialized_class_(_, _, _, _, _, SSDcl, _, _, _, EScope), (EScope = (public) -> Body =.. [SSDcl, Pred, Scope, Compilation, Meta, SContainer, TContainer] ; (EScope = protected -> Call =.. [SSDcl, Pred, Scope2, Compilation, Meta, SContainer, TContainer], Body = (Call, (Scope2 = p -> Scope = p; Scope = p(p))) ; Scope = p, Call =.. [SSDcl, Pred, Scope2, Compilation, Meta, SContainer2, TContainer], Body = (Call, (Scope2 = p -> SContainer = SContainer2; SContainer = Obj)))), assertz(lgt_dcl_((Head:-Body))), fail. lgt_gen_ic_hierarchy_sdcl_clauses. lgt_gen_ic_def_clauses :- lgt_gen_dynamic_def_clauses, lgt_gen_ic_local_def_clauses, lgt_gen_ic_linking_def_clauses, lgt_gen_ic_imports_def_clauses, lgt_gen_ic_hierarchy_def_clauses. lgt_gen_ic_local_def_clauses :- \+ lgt_def_(_) -> lgt_object_(_, _, _, Def, _, _, _, _, _), Head =.. [Def, _, _, _, _, _], assertz(lgt_def_((Head:-fail))) ; true. lgt_gen_ic_linking_def_clauses :- lgt_object_(Obj, _, _, Def, _, _, _, _, DDef), Head =.. [Def, Pred, Sender, This, Self, Call, Obj], Body =.. [Def, Pred, Sender, This, Self, Call], assertz(lgt_def_((Head:-Body))), Body2 =.. [DDef, Pred, Sender, This, Self, Call], assertz(lgt_def_((Head:-Body2))). lgt_gen_ic_imports_def_clauses :- lgt_object_(Obj, _, _, ODef, _, _, _, _, _), lgt_rclause_(lgt_imports_category_(Obj, Ctg, _)), Head =.. [ODef, Pred, Sender, Obj, Self, Call, Ctg], lgt_imported_category_(Ctg, _, _, CDef, _), Body =.. [CDef, Pred, Sender, Obj, Self, Call], assertz(lgt_def_((Head:-Body))), fail. lgt_gen_ic_imports_def_clauses. lgt_gen_ic_hierarchy_def_clauses :- lgt_object_(Obj, _, _, ODef, _, _, _, _, _), lgt_rclause_(lgt_instantiates_class_(Obj, Class, _)), Head =.. [ODef, Pred, Sender, Obj, Self, Call, Container], lgt_instantiated_class_(Class, _, _, _, _, _, CSDef, _, _, _), Body =.. [CSDef, Pred, Sender, Class, Self, Call, Container], assertz(lgt_def_((Head:-Body))), fail. lgt_gen_ic_hierarchy_def_clauses. lgt_gen_ic_sdef_clauses :- lgt_gen_ic_linking_sdef_clauses, lgt_gen_ic_category_sdef_clauses, lgt_gen_ic_hierarchy_sdef_clauses. lgt_gen_ic_linking_sdef_clauses :- lgt_object_(Obj, _, _, Def, _, _, SDef, _, DDef), Head =.. [SDef, Pred, Sender, This, Self, Call, Obj], Body =.. [Def, Pred, Sender, This, Self, Call], assertz(lgt_def_((Head:-Body))), Body2 =.. [DDef, Pred, Sender, This, Self, Call], assertz(lgt_def_((Head:-Body2))). lgt_gen_ic_category_sdef_clauses :- lgt_object_(Obj, _, _, _, _, _, OSDef, _, _), lgt_rclause_(lgt_imports_category_(Obj, Ctg, _)), Head =.. [OSDef, Pred, Sender, Obj, Self, Call, Ctg], lgt_imported_category_(Ctg, _, _, CDef, _), Body =.. [CDef, Pred, Sender, Obj, Self, Call], assertz(lgt_def_((Head:-Body))), fail. lgt_gen_ic_category_sdef_clauses. lgt_gen_ic_hierarchy_sdef_clauses :- lgt_object_(Class, _, _, _, _, _, CSDef, _, _), lgt_rclause_(lgt_specializes_class_(Class, Super, _)), Head =.. [CSDef, Pred, Sender, Class, Self, Call, Container], lgt_specialized_class_(Super, _, _, _, _, _, SSDef, _, _, _), Body =.. [SSDef, Pred, Sender, Super, Self, Call, Container], assertz(lgt_def_((Head:-Body))), fail. lgt_gen_ic_hierarchy_sdef_clauses. % we can have a root object where super have nowhere to go ... lgt_gen_ic_super_clauses :- lgt_object_(_, _, _, _, OSuper, _, _, _, _), \+ lgt_rclause_(lgt_instantiates_class_(_, _, _)), \+ lgt_rclause_(lgt_specializes_class_(_, _, _)), Head =.. [OSuper, _, _, _, _, _, _], assertz(lgt_def_((Head:-fail))), !. % ... or predicates can be redefined in instances... lgt_gen_ic_super_clauses :- lgt_object_(Obj, _, _, _, OSuper, _, _, _, _), lgt_rclause_(lgt_instantiates_class_(Obj, Class, _)), Head =.. [OSuper, Pred, Sender, Obj, Obj, Call, Container], lgt_instantiated_class_(Class, _, _, _, _, _, CSDef, _, _, _), Body =.. [CSDef, Pred, Sender, Class, Obj, Call, Container], assertz(lgt_def_((Head:-Body))), fail. % ... or/and in subclasses... lgt_gen_ic_super_clauses :- lgt_object_(Class, _, _, _, CSuper, _, _, _, _), lgt_rclause_(lgt_specializes_class_(Class, Super, _)), Head =.. [CSuper, Pred, Sender, Class, Self, Call, Container], lgt_specialized_class_(Super, _, _, _, _, _, SSDef, _, _, _), Body =.. [SSDef, Pred, Sender, Super, Self, Call, Container], assertz(lgt_def_((Head:-Body))), fail. lgt_gen_ic_super_clauses. lgt_fix_redef_built_ins :- retract(lgt_eclause_(Clause)), lgt_fix_redef_built_ins(Clause, Fixed), assertz(lgt_feclause_(Fixed)), fail. lgt_fix_redef_built_ins :- retract(lgt_entity_init_(Call)), lgt_fix_redef_built_ins(Call, Fixed), assertz(lgt_fentity_init_(Fixed)), fail. lgt_fix_redef_built_ins. % lgt_fix_redef_built_ins(+clause, -clause) lgt_fix_redef_built_ins((Head:-Body), (Head:-Fixed)) :- !, lgt_fix_redef_built_ins(Body, Fixed). lgt_fix_redef_built_ins((Pred1, Pred2), (TPred1, TPred2)) :- !, lgt_fix_redef_built_ins(Pred1, TPred1), lgt_fix_redef_built_ins(Pred2, TPred2). lgt_fix_redef_built_ins((Pred1; Pred2), (TPred1; TPred2)) :- !, lgt_fix_redef_built_ins(Pred1, TPred1), lgt_fix_redef_built_ins(Pred2, TPred2). lgt_fix_redef_built_ins((Pred1 -> Pred2), (TPred1 -> TPred2)) :- !, lgt_fix_redef_built_ins(Pred1, TPred1), lgt_fix_redef_built_ins(Pred2, TPred2). lgt_fix_redef_built_ins(\+ Pred, \+ TPred) :- !, lgt_fix_redef_built_ins(Pred, TPred). lgt_fix_redef_built_ins(call(Pred), call(TPred)) :- !, lgt_fix_redef_built_ins(Pred, TPred). lgt_fix_redef_built_ins(once(Pred), once(TPred)) :- !, lgt_fix_redef_built_ins(Pred, TPred). lgt_fix_redef_built_ins(catch(Goal, Catcher, Recovery), catch(TGoal, Catcher, TRecovery)) :- !, lgt_fix_redef_built_ins(Goal, TGoal), lgt_fix_redef_built_ins(Recovery, TRecovery). lgt_fix_redef_built_ins(bagof(Term, Pred, List), bagof(Term, TPred, List)) :- !, lgt_fix_redef_built_ins(Pred, TPred). lgt_fix_redef_built_ins(findall(Term, Pred, List), findall(Term, TPred, List)) :- !, lgt_fix_redef_built_ins(Pred, TPred). lgt_fix_redef_built_ins(forall(Generate, Test), forall(TGenerate, TTest)) :- !, lgt_fix_redef_built_ins(Generate, TGenerate), lgt_fix_redef_built_ins(Test, TTest). lgt_fix_redef_built_ins(setof(Term, Pred, List), setof(Term, TPred, List)) :- !, lgt_fix_redef_built_ins(Pred, TPred). lgt_fix_redef_built_ins(lgt_call_built_in(Pred, Context), TPred) :- !, (lgt_redefined_built_in_(Pred, Context, TPred) -> true ; lgt_fix_redef_built_ins(Pred, TPred)). lgt_fix_redef_built_ins(Pred, Pred). % find and report misspelt predicate calls % in the body of objects/cartegories predicates lgt_find_misspelt_calls :- setof(Pred, (lgt_calls_pred_(Pred), \+ lgt_defs_pred_(Pred), \+ lgt_dynamic_(Pred)), Preds) -> lgt_report_misspelt_calls(Preds) ; true. % lgt_report_misspelt_calls(+list) lgt_report_misspelt_calls([]). lgt_report_misspelt_calls([Pred| Preds]) :- lgt_compiler_option(misspelt, warning) -> lgt_entity_(Type, Entity, _, _), write('Logtalk compiler warning!'), nl, write(' these static predicates are called but never defined: '), nl, write(' '), writeq([Pred| Preds]), nl, write(' inside '), write(Type), write(': '), writeq(Entity), nl ; true. lgt_write_directives(Stream) :- write_term(Stream, ':- ', []), write_term(Stream, op(600, xfy, ::), [quoted(true)]), write_term(Stream, '.', []), nl(Stream), write_term(Stream, ':- ', []), write_term(Stream, op(600, fy, ::), [quoted(true)]), write_term(Stream, '.', []), nl(Stream), write_term(Stream, ':- ', []), write_term(Stream, op(600, fx, ^^), [quoted(true)]), write_term(Stream, '.', []), nl(Stream), lgt_directive_(Dir), write_term(Stream, ':- ', []), write_term(Stream, Dir, [quoted(true)]), write_term(Stream, '.', []), nl(Stream), fail. lgt_write_directives(_). lgt_write_clauses(Stream) :- lgt_write_functors_clause(Stream), lgt_write_dcl_clauses(Stream), lgt_write_def_clauses(Stream), lgt_write_super_clauses(Stream), lgt_write_entity_clauses(Stream). lgt_write_functors_clause(Stream) :- lgt_entity_functors_(Clause), write_term(Stream, Clause, [quoted(true)]), write_term(Stream, '.', []), nl(Stream). lgt_write_def_clauses(Stream) :- lgt_def_(Clause), write_term(Stream, Clause, [quoted(true)]), write_term(Stream, '.', []), nl(Stream), fail. lgt_write_def_clauses(_). lgt_write_dcl_clauses(Stream) :- lgt_dcl_(Clause), write_term(Stream, Clause, [quoted(true)]), write_term(Stream, '.', []), nl(Stream), fail. lgt_write_dcl_clauses(_). lgt_write_super_clauses(Stream) :- lgt_super_(Clause), write_term(Stream, Clause, [quoted(true)]), write_term(Stream, '.', []), nl(Stream), fail. lgt_write_super_clauses(_). lgt_write_entity_clauses(Stream) :- lgt_feclause_(Clause), write_term(Stream, Clause, [quoted(true)]), write_term(Stream, '.', []), nl(Stream), fail. lgt_write_entity_clauses(_). lgt_write_init_call(Stream) :- lgt_compiler_option(iso_initialization_dir, true), !, findall(Clause, lgt_rclause_(Clause), Clauses), write_term(Stream, ':- initialization((lgt_assert_relation_clauses(', []), write_term(Stream, Clauses, [quoted(true)]), write_term(Stream, ')', []), (lgt_fentity_init_(Call) -> write_term(Stream, ', ', []), write_term(Stream, Call, [quoted(true)]) ; true), write_term(Stream, ')).', []), nl(Stream). lgt_write_init_call(Stream) :- findall(Clause, lgt_rclause_(Clause), Clauses), write_term(Stream, ':- lgt_assert_relation_clauses(', []), write_term(Stream, Clauses, [quoted(true)]), write_term(Stream, ').', []), nl(Stream), (lgt_fentity_init_(Call) -> write_term(Stream, ':- ', []), write_term(Stream, Call, [quoted(true)]), write_term(Stream, '.', []), nl(Stream) ; true). lgt_assert_tr_entity :- lgt_assert_directives, lgt_assert_functors_clause, lgt_assert_dcl_clauses, lgt_assert_def_clauses, lgt_assert_super_clauses, lgt_assert_entity_clauses, lgt_assert_relation_clauses, lgt_assert_init. lgt_assert_directives :- lgt_directive_((dynamic(Functor/Arity))), functor(Pred, Functor, Arity), asserta(Pred), retractall(Pred), fail. lgt_assert_directives :- lgt_directive_((op(Priority, Specifier, Operators))), op(Priority, Specifier, Operators), fail. lgt_assert_directives. lgt_assert_functors_clause :- lgt_entity_functors_(Clause), assertz(Clause). lgt_assert_dcl_clauses :- lgt_dcl_(Clause), assertz(Clause), fail. lgt_assert_dcl_clauses. lgt_assert_def_clauses :- lgt_def_(Clause), assertz(Clause), fail. lgt_assert_def_clauses. lgt_assert_super_clauses :- lgt_super_(Clause), assertz(Clause), fail. lgt_assert_super_clauses. lgt_assert_entity_clauses :- lgt_feclause_(Clause), assertz(Clause), fail. lgt_assert_entity_clauses. lgt_assert_relation_clauses :- lgt_rclause_(Clause), assertz(Clause), fail. lgt_assert_relation_clauses. lgt_assert_init :- lgt_fentity_init_(Goal) -> once(Goal) ; true. % lgt_assert_relation_clauses(+list) % % called when loading a compiled Logtalk % entity to update Logtalk internal tables lgt_assert_relation_clauses([]). lgt_assert_relation_clauses([Clause| Clauses]) :- lgt_assert_relation_clause(Clause), lgt_assert_relation_clauses(Clauses). lgt_assert_relation_clause(Clause) :- functor(Clause, Functor, Arity), arg(1, Clause, Entity), functor(Old, Functor, Arity), arg(1, Old, Entity), retractall(Old), assertz(Clause). % lgt_construct_object_functors(+compound, -atom, -atom, -atom, -atom, -atom, -atom, -atom, -atom) lgt_construct_object_functors(Obj, Prefix, Dcl, Def, Super, SDcl, SDef, DDcl, DDef) :- functor(Obj, Functor, Arity), number_codes(Arity, Codes), atom_codes(Atom, Codes), atom_concat(Functor, Atom, Aux), atom_concat(Aux, '_', Prefix), atom_concat(Prefix, '_dcl', Dcl), atom_concat(Prefix, '_def', Def), atom_concat(Prefix, '_super', Super), atom_concat(Prefix, '_sdcl', SDcl), atom_concat(Prefix, '_sdef', SDef), atom_concat(Prefix, '_ddcl', DDcl), atom_concat(Prefix, '_ddef', DDef). % lgt_construct_protocol_functors(+compound, -atom, -atom) lgt_construct_protocol_functors(Ptc, Prefix, Dcl) :- functor(Ptc, Functor, Arity), number_codes(Arity, Codes), atom_codes(Atom, Codes), atom_concat(Functor, Atom, Aux), atom_concat(Aux, '_', Prefix), atom_concat(Prefix, '_dcl', Dcl). % lgt_construct_category_functors(+compound, -atom, -atom, -atom) lgt_construct_category_functors(Ctg, Prefix, Dcl, Def) :- functor(Ctg, Functor, Arity), number_codes(Arity, Codes), atom_codes(Atom, Codes), atom_concat(Functor, Atom, Aux), atom_concat(Aux, '_', Prefix), atom_concat(Prefix, '_dcl', Dcl), atom_concat(Prefix, '_def', Def). % lgt_construct_predicate_functor(+atom, +atom, +integer, -atom) lgt_construct_predicate_functor(EPrefix, Functor, Arity, PPrefix) :- atom_concat(EPrefix, Functor, Aux), number_codes(Arity, Codes), atom_codes(Atom, Codes), atom_concat(Aux, Atom, PPrefix). % lgt_built_in(+callable) % % checks if the argument is either a Prolog or Logtalk built-in predicate lgt_built_in(Pred) :- lgt_pl_built_in(Pred). lgt_built_in(Pred) :- lgt_lgt_built_in(Pred). % lgt_pl_built_in(+callable) % % either host Prolog native built-ins or missing ISO built-ins % that we have defined in the correspondent config file lgt_pl_built_in(Pred) :- lgt_predicate_property(Pred, built_in). lgt_pl_built_in(Pred) :- lgt_iso_predicate(Pred). % logtalk built-in methods % % lgt_built_in_method(?callable, ?scope) lgt_built_in_method(parameter(_, _), p). lgt_built_in_method(self(_), p). lgt_built_in_method(sender(_), p). lgt_built_in_method(this(_), p). lgt_built_in_method(current_predicate(_), p(p(p))). lgt_built_in_method(predicate_property(_, _), p(p(p))). lgt_built_in_method(abolish(_), p(p(p))). lgt_built_in_method(asserta(_), p(p(p))). lgt_built_in_method(assertz(_), p(p(p))). lgt_built_in_method(clause(_, _), p(p(p))). lgt_built_in_method(retract(_), p(p(p))). lgt_built_in_method(retractall(_), p(p(p))). lgt_built_in_method(bagof(_, _, _), p(p(p))). lgt_built_in_method(findall(_, _, _), p(p(p))). lgt_built_in_method(forall(_, _), p(p(p))). lgt_built_in_method(setof(_, _, _), p(p(p))). % Logtalk directives % % lgt_lgt_directive(+atom/+integer) lgt_lgt_directive(Directive) :- lgt_lgt_opening_directive(Directive). lgt_lgt_directive(Directive) :- lgt_lgt_closing_directive(Directive). lgt_lgt_directive(Directive) :- lgt_lgt_entity_directive(Directive). lgt_lgt_directive(Directive) :- lgt_lgt_predicate_directive(Directive). lgt_lgt_opening_directive(object/1). lgt_lgt_opening_directive(object/2). lgt_lgt_opening_directive(object/3). lgt_lgt_opening_directive(object/4). lgt_lgt_opening_directive(category/1). lgt_lgt_opening_directive(category/2). lgt_lgt_opening_directive(protocol/1). lgt_lgt_opening_directive(protocol/2). lgt_lgt_closing_directive(end_object/0). lgt_lgt_closing_directive(end_category/0). lgt_lgt_closing_directive(end_protocol/0). lgt_lgt_entity_directive(calls/N) :- N >= 1. lgt_lgt_entity_directive(uses/N) :- N >= 1. lgt_lgt_entity_directive((initialization)/1). lgt_lgt_entity_directive((dynamic)/N) :- N =:= 0. lgt_lgt_entity_directive(op/3). lgt_lgt_entity_directive(info/1). lgt_lgt_entity_directive(info/2). lgt_lgt_predicate_directive((dynamic)/N) :- N >= 1. lgt_lgt_predicate_directive(metapredicate/N) :- N >= 1. lgt_lgt_predicate_directive((discontiguous)/N) :- N >= 1. lgt_lgt_predicate_directive((public)/N) :- N >= 1. lgt_lgt_predicate_directive(protected/N) :- N >= 1. lgt_lgt_predicate_directive(private/N) :- N >= 1. lgt_lgt_predicate_directive((mode)/2). % built-in Prolog metapredicates lgt_pl_metapredicate(catch(::, *, ::)). lgt_pl_metapredicate(bagof(*, ::, *)). lgt_pl_metapredicate(setof(*, ::, *)). lgt_pl_metapredicate(findall(*, ::, *)). lgt_pl_metapredicate(forall(::, ::)). lgt_pl_metapredicate(call(::)). lgt_pl_metapredicate(once(::)). lgt_pl_metapredicate(\+ (::)). % utility predicates used during compilation of Logtalk % entities to store and access context information lgt_context(context(_, _, _, _, _)). lgt_sender(context(Sender, _, _, _, _), Sender). lgt_this(context(_, This, _, _, _), This). lgt_self(context(_, _, Self, _, _), Self). lgt_prefix(context(_, _, _, Prefix, _), Prefix). lgt_metavars(context(_, _, _, _, Metavars), Metavars). % lgt_convert_to_list(+pi_or_pi_list, -pi_list) lgt_convert_to_list([[A|B]], [A|B]) :- % predicate indicator list !. lgt_convert_to_list([A|B], [A|B]) :- % predicate indicator sequence !. lgt_convert_to_list(A, [A]). % single predicate indicator % lgt_valid_pred_ind(@term) lgt_valid_pred_ind(Term) :- nonvar(Term), Term = Functor/Arity, atom(Functor), integer(Arity), Arity >= 0. % lgt_valid_object_id(@term) lgt_valid_object_id(Term) :- once((atom(Term); compound(Term))). % lgt_valid_category_id(@term) lgt_valid_category_id(Term) :- atom(Term). % lgt_valid_protocol_id(@term) lgt_valid_protocol_id(Term) :- atom(Term). % lgt_valid_entity_scope(@term) lgt_valid_entity_scope(Term) :- nonvar(Term), (Term = (Scope::_) -> nonvar(Scope), once(lgt_member(Scope, [(public), protected, private])) ; true). % lgt_scope_id(+term, -atom, -term) lgt_scope_id(Scope::Entity, Scope, Entity) :- !. lgt_scope_id(Entity, (public), Entity). % lgt_callable(@term) lgt_callable(Term) :- nonvar(Term), functor(Term, Functor, _), atom(Functor). % lgt_valid_op_priority(@term) lgt_valid_op_priority(Priority) :- integer(Priority), Priority >= 0, Priority =< 1200. % lgt_valid_op_specifier(@term) lgt_valid_op_specifier(Specifier) :- nonvar(Specifier), once(lgt_member(Specifier, [fx, fy, xfx, xfy, yfx, xf, yf])). % lgt_valid_op_names(@term) lgt_valid_op_names(Operators) :- nonvar(Operators), lgt_convert_to_list(Operators, List), forall(lgt_member(Operator, List), atom(Operator)). % lgt_valid_metapred_term(@term) lgt_valid_metapred_term(Pred) :- nonvar(Pred), Pred =.. [_| Args], forall(lgt_member(Arg, Args), (nonvar(Arg), (Arg = (::); Arg = (*)))). % lgt_valid_mode_term(@term) lgt_valid_mode_term(Pred) :- nonvar(Pred), Pred =.. [_| Args], forall( lgt_member(Arg, Args), (nonvar(Arg), functor(Arg, Functor, Arity), Arity =< 1, lgt_member(Functor, [?, +, -, @]))). % lgt_valid_number_of_solutions(@term) lgt_valid_number_of_solutions(Solutions) :- nonvar(Solutions), once(lgt_member(Solutions, [zero, one, zero_or_one, zero_or_more, one_or_more, error])). % lgt_valid_info_list(@list) lgt_valid_info_list([]). lgt_valid_info_list([Head| Tail]) :- nonvar(Head), Head = (Key is Value), nonvar(Key), nonvar(Value), lgt_valid_info_list(Tail). % lgt_valid_compiler_options(@list) % % true if all compiler options are valid lgt_valid_compiler_options([]). lgt_valid_compiler_options([Option| Options]) :- nonvar(Option), lgt_valid_compiler_option(Option), lgt_valid_compiler_options(Options). % lgt_valid_compiler_option(@nonvar) lgt_valid_compiler_option(iso_initialization_dir(Option)) :- once((Option == true; Option == false)). lgt_valid_compiler_option(xml(Option)) :- once((Option == on; Option == off)). lgt_valid_compiler_option(xsl(File)) :- atom(File). lgt_valid_compiler_option(singletons(Option)) :- once((Option == silent; Option == warning)). lgt_valid_compiler_option(misspelt(Option)) :- once((Option == silent; Option == warning)). lgt_valid_compiler_option(lgtredef(Option)) :- once((Option == silent; Option == warning)). lgt_valid_compiler_option(plredef(Option)) :- once((Option == silent; Option == warning)). lgt_valid_compiler_option(report(Option)) :- once((Option == on; Option == off)). % Logtalk built-in predicates % % lgt_lgt_built_in(?callable) lgt_lgt_built_in(::(_, _)). lgt_lgt_built_in(forall(_, _)). lgt_lgt_built_in(retractall(_)). lgt_lgt_built_in(logtalk_compile(_)). lgt_lgt_built_in(logtalk_compile(_, _)). lgt_lgt_built_in(logtalk_load(_)). lgt_lgt_built_in(logtalk_load(_, _)). lgt_lgt_built_in(logtalk_version(_, _, _)). lgt_lgt_built_in(protocol_property(_, _)). lgt_lgt_built_in(category_property(_, _)). lgt_lgt_built_in(object_property(_, _)). lgt_lgt_built_in(current_protocol(_)). lgt_lgt_built_in(current_category(_)). lgt_lgt_built_in(current_object(_)). lgt_lgt_built_in(create_object(_, _, _, _)). lgt_lgt_built_in(create_category(_, _, _, _)). lgt_lgt_built_in(create_protocol(_, _, _)). lgt_lgt_built_in(abolish_object(_)). lgt_lgt_built_in(abolish_category(_)). lgt_lgt_built_in(abolish_protocol(_)). lgt_lgt_built_in(implements_protocol(_, _)). lgt_lgt_built_in(implements_protocol(_, _, _)). lgt_lgt_built_in(imports_category(_, _)). lgt_lgt_built_in(imports_category(_, _, _)). lgt_lgt_built_in(instantiates_class(_, _)). lgt_lgt_built_in(instantiates_class(_, _, _)). lgt_lgt_built_in(specializes_class(_, _)). lgt_lgt_built_in(specializes_class(_, _, _)). lgt_lgt_built_in(extends_protocol(_, _)). lgt_lgt_built_in(extends_protocol(_, _, _)). lgt_lgt_built_in(extends_object(_, _)). lgt_lgt_built_in(extends_object(_, _, _)). lgt_lgt_built_in(abolish_events(_, _, _, _, _)). lgt_lgt_built_in(define_events(_, _, _, _, _)). lgt_lgt_built_in(current_event(_, _, _, _, _)). %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % xml % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% lgt_write_xml_file(Stream) :- lgt_write_xml_header(Stream), lgt_write_xml_entity(Stream), lgt_write_xml_relations(Stream), lgt_write_xml_predicates(Stream), lgt_write_xml_footer(Stream). lgt_write_xml_header(Stream) :- lgt_write_xml_open_tag(Stream, '?xml version="1.0"?', []), write_term(Stream, '', []), nl(Stream), lgt_compiler_option(xsl, XSL), write_term(Stream, '', []), nl(Stream), lgt_write_xml_open_tag(Stream, logtalk, []). lgt_write_xml_footer(Stream) :- lgt_write_xml_close_tag(Stream, logtalk). lgt_write_xml_entity(Stream) :- lgt_entity_(Type, Entity, _, _), (lgt_entity_comp_mode_((dynamic)) -> Compilation = (dynamic); Compilation = static), lgt_write_xml_open_tag(Stream, entity, []), lgt_entity_to_xml_name(Entity, Name), lgt_write_xml_cdata_element(Stream, name, [], Name), lgt_write_xml_element(Stream, (type), [], Type), lgt_write_xml_element(Stream, compilation, [], Compilation), (lgt_info_(List) -> (lgt_member(comment is Comment, List) -> lgt_write_xml_cdata_element(Stream, comment, [], Comment) ; true), (lgt_member(authors is Authors, List) -> lgt_write_xml_cdata_element(Stream, authors, [], Authors) ; true), (lgt_member(version is Version, List) -> lgt_write_xml_element(Stream, version, [], Version) ; true), (lgt_member(date is Date, List) -> lgt_write_xml_element(Stream, date, [], Date) ; true), forall( (lgt_member(Key is Value, List), \+ lgt_member(Key, [comment, authors, version, date, parnames])), (lgt_write_xml_open_tag(Stream, info, []), lgt_write_xml_element(Stream, key, [], Key), lgt_write_xml_cdata_element(Stream, value, [], Value), lgt_write_xml_close_tag(Stream, info))) ; true), lgt_write_xml_close_tag(Stream, entity). % lgt_entity_to_xml_name(+entity, -nonvar) % % instantiates the parameters in a parametric object to % user defined names or to the atom '_' lgt_entity_to_xml_name(Entity, Name) :- lgt_info_(List), lgt_member(parnames is Names, List), !, Entity =.. [Functor| Names], Name =.. [Functor| Names]. lgt_entity_to_xml_name(Entity, Name) :- Entity =.. [Functor| Args], lgt_vars_to_underscore(Args, Names), Name =.. [Functor| Names]. % lgt_relation_to_xml_name(+entity, +entity, -atom) % % instantiates the parameters in a related entity taking % in account the parameter sharing with the original entity lgt_relation_to_xml_name(Entity, Relation, Name) :- lgt_entity_to_xml_name(Entity, _), Relation =.. [Functor| Args], lgt_vars_to_underscore(Args, Names), Name =.. [Functor| Names]. % lgt_vars_to_underscore(+list, -list) % % instantiates the variables in the input list to the atom '_' lgt_vars_to_underscore([], []). lgt_vars_to_underscore([Arg| Args], [Name| Names]) :- (var(Arg) -> Name = '_'; Name = Arg), lgt_vars_to_underscore(Args, Names). % lgt_relation_to_xml_filename(+entity, -atom) % % needed to build filenames in links to parametric objects lgt_relation_to_xml_filename(Relation, File) :- atom(Relation) -> File = Relation ; functor(Relation, Functor, Arity), number_codes(Arity, Codes), atom_codes(Atom, Codes), atom_concat(Functor, Atom, File). lgt_write_xml_predicates(Stream) :- lgt_write_xml_open_tag(Stream, predicates, []), lgt_write_xml_public_predicates(Stream), lgt_write_xml_protected_predicates(Stream), lgt_write_xml_private_predicates(Stream), lgt_write_xml_close_tag(Stream, predicates). lgt_write_xml_public_predicates(Stream) :- lgt_write_xml_open_tag(Stream, (public), []), lgt_public_(Functor/Arity), lgt_write_xml_predicate(Stream, Functor/Arity, (public)), fail. lgt_write_xml_public_predicates(Stream) :- lgt_write_xml_close_tag(Stream, (public)). lgt_write_xml_protected_predicates(Stream) :- lgt_write_xml_open_tag(Stream, protected, []), lgt_protected_(Functor/Arity), lgt_write_xml_predicate(Stream, Functor/Arity, protected), fail. lgt_write_xml_protected_predicates(Stream) :- lgt_write_xml_close_tag(Stream, protected). lgt_write_xml_private_predicates(Stream) :- lgt_write_xml_open_tag(Stream, private, []), lgt_private_(Functor/Arity), lgt_write_xml_predicate(Stream, Functor/Arity, private), fail. lgt_write_xml_private_predicates(Stream) :- lgt_write_xml_close_tag(Stream, private). lgt_write_xml_predicate(Stream, Functor/Arity, Scope) :- ((lgt_entity_comp_mode_((dynamic)); lgt_dynamic_(Functor/Arity)) -> Compilation = (dynamic) ; Compilation = static), lgt_write_xml_open_tag(Stream, predicate, []), lgt_write_xml_cdata_element(Stream, name, [], Functor/Arity), lgt_write_xml_element(Stream, scope, [], Scope), lgt_write_xml_element(Stream, compilation, [], Compilation), functor(Meta, Functor, Arity), (lgt_metapredicate_(Meta) -> lgt_write_xml_cdata_element(Stream, meta, [], Meta) ; true), functor(Template, Functor, Arity), forall( lgt_mode_(Template, Solutions), (lgt_write_xml_open_tag(Stream, (mode), []), lgt_write_xml_cdata_element(Stream, template, [], Template), lgt_write_xml_element(Stream, solutions, [], Solutions), lgt_write_xml_close_tag(Stream, (mode)))), ((lgt_info_(Functor/Arity, List), lgt_member(comment is Comment, List)) -> lgt_write_xml_cdata_element(Stream, comment, [], Comment) ; true), ((lgt_info_(Functor/Arity, List), lgt_member(argnames is Names, List)) -> Template =.. [Functor| Names], lgt_write_xml_cdata_element(Stream, template, [], Template) ; true), forall( (lgt_info_(Functor/Arity, List), lgt_member(Key is Value, List), \+ lgt_member(Key, [comment, argnames])), (lgt_write_xml_open_tag(Stream, info, []), lgt_write_xml_element(Stream, key, [], Key), lgt_write_xml_cdata_element(Stream, value, [], Value), lgt_write_xml_close_tag(Stream, info))), lgt_write_xml_close_tag(Stream, predicate). lgt_write_xml_relations(Stream) :- lgt_write_xml_open_tag(Stream, relations, []), fail. lgt_write_xml_relations(Stream) :- lgt_rclause_(lgt_implements_protocol_(Entity, Ptc, Scope)), lgt_write_xml_relation(Stream, Entity, Ptc, implements, Scope), fail. lgt_write_xml_relations(Stream) :- lgt_rclause_(lgt_imports_category_(Entity, Ctg, Scope)), lgt_write_xml_relation(Stream, Entity, Ctg, imports, Scope), fail. lgt_write_xml_relations(Stream) :- lgt_rclause_(lgt_extends_object_(Entity, Parent, Scope)), lgt_write_xml_relation(Stream, Entity, Parent, extends, Scope), fail. lgt_write_xml_relations(Stream) :- lgt_rclause_(lgt_instantiates_class_(Entity, Class, Scope)), lgt_write_xml_relation(Stream, Entity, Class, instantiates, Scope), fail. lgt_write_xml_relations(Stream) :- lgt_rclause_(lgt_specializes_class_(Entity, Superclass, Scope)), lgt_write_xml_relation(Stream, Entity, Superclass, specializes, Scope), fail. lgt_write_xml_relations(Stream) :- lgt_rclause_(lgt_extends_protocol_(Entity, Ptc, Scope)), lgt_write_xml_relation(Stream, Entity, Ptc, extends, Scope), fail. lgt_write_xml_relations(Stream) :- lgt_entity_(_, Entity, _, _), lgt_uses_(Obj), lgt_write_xml_relation(Stream, Entity, Obj, uses), fail. lgt_write_xml_relations(Stream) :- lgt_entity_(_, Entity, _, _), lgt_calls_(Ptc), lgt_write_xml_relation(Stream, Entity, Ptc, calls), fail. lgt_write_xml_relations(Stream) :- lgt_write_xml_close_tag(Stream, relations). lgt_write_xml_relation(Stream, Entity, Relation, Tag, Scope) :- lgt_relation_to_xml_name(Entity, Relation, Name), lgt_relation_to_xml_filename(Relation, File), lgt_write_xml_open_tag(Stream, Tag, []), lgt_write_xml_cdata_element(Stream, name, [], Name), lgt_write_xml_element(Stream, scope, [], Scope), lgt_write_xml_cdata_element(Stream, file, [], File), lgt_write_xml_close_tag(Stream, Tag). lgt_write_xml_relation(Stream, Entity, Relation, Tag) :- lgt_relation_to_xml_name(Entity, Relation, Name), lgt_relation_to_xml_filename(Relation, File), lgt_write_xml_open_tag(Stream, Tag, []), lgt_write_xml_cdata_element(Stream, name, [], Name), lgt_write_xml_cdata_element(Stream, file, [], File), lgt_write_xml_close_tag(Stream, Tag). % lgt_write_xml_open_tag(@stream, @atom, @list) % % writes lgt_write_xml_open_tag(Stream, Tag, Atts) :- write_term(Stream, '<', []), write_term(Stream, Tag, []), lgt_write_xml_tag_attributes(Stream, Atts), write_term(Stream, '>', []), nl(Stream). % lgt_write_xml_element(@stream, @atom, @list, @term) % % writes Text lgt_write_xml_element(Stream, Tag, Atts, Text) :- write_term(Stream, '<', []), write_term(Stream, Tag, []), lgt_write_xml_tag_attributes(Stream, Atts), write_term(Stream, '>', []), write_term(Stream, Text, []), write_term(Stream, '', []), nl(Stream). % lgt_write_xml_cdata_element(@stream, @atom, @list, @term) % % writes lgt_write_xml_cdata_element(Stream, Tag, Atts, Text) :- write_term(Stream, '<', []), write_term(Stream, Tag, []), lgt_write_xml_tag_attributes(Stream, Atts), write_term(Stream, '>', []), nl(Stream). % lgt_write_xml_tag_attributes(@stream, @list) lgt_write_xml_tag_attributes(_, []) :- !. lgt_write_xml_tag_attributes(Stream, [Attribute-Value| Rest]) :- write_term(Stream, ' ', []), write_term(Stream, Attribute, []), write_term(Stream, '="', []), write_term(Stream, Value, []), write_term(Stream, '"', []), lgt_write_xml_tag_attributes(Stream, Rest). % lgt_write_xml_close_tag(@stream, @atom) % % writes lgt_write_xml_close_tag(Stream, Tag) :- write_term(Stream, '', []), nl(Stream). %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % Logtalk banner % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% lgt_banner :- logtalk_version(Major, Minor, Patch), write('Logtalk '), write(Major), write('.'), write(Minor), write('.'), write(Patch), nl, write('Copyright (c) 1998-2001 Paulo Moura'), nl. :- initialization(lgt_banner). %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % end! % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%