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golog2_32.pl
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%
%
%
% A Simple Frame Engine with Multiple Inheritance, transitive
% and intransitive Relations, Methods and Demons
%
% Luis Seabra Lopes -- Monte da Caparica -- December 1992
%
% % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % %
% %%
% %% Predicados Utilitarios
% %%
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
:-style_check(-singleton).
:-style_check(-discontiguous).
:-dynamic frame_/1.
:-dynamic relation_/1.
% http://stackoverflow.com/questions/130097/real-world-prolog-usage
%
%
save_kb(Filename):-
tell(Filename),
forall(show_kb,true),
told.
show_kb:-
( (
clause(frame_(_),true),
listing(frame_),
forall(frame_(Frame), listing(Frame))
),!;true),
( (
clause(relation_(_),true),
listing(relation_),
forall(relation_(Relation), listing(Relation))
),!;true),
( listing(slot_),
!;
true
),
( (
clause(demon_(_,_),true),
listing(demon_),
findall( Slot, demon_(Frame,Slot), L),
list_to_set(L,Set),
forall(member(Slot,Set), listing(Slot))
),!;true).
delete_kb:-
forall(d_kb, true).
d_kb:-
( %apaga frames
clause(frame_(_),true),
forall( frame_(Frame),
(
Term =..[Frame,_], %Termo de frames
retractall(Term)
)
),
retractall(frame_(_))
);
( %apaga slots
clause( slot_(_,_),true),
forall( slot_(Frame,_),
(
Term =..[Frame,_,_,_],%termo de slots
retractall(Term)
)
),
retractall(slot_(_,_))
);
( %apaga relations
clause(relation_(_),true),
forall( relation_(Rel),
(
Term =..[Rel,_,_,_,_],
retractall(Term)
)
),
retractall(relation_(_))
);
( %apaga demonios
clause(demon_(_,_),true),
forall( demon_(_,Slot),
(
Term =..[Slot,_,_,_,_,_,_],
retractall(Term)
)
),
retractall(demon_(_,_))
);
true.
ordenar([],_,_,[]):-!.
ordenar(L,Criterio,Args,[Best|RestOrd])
:- buscar_melhor(L,Criterio,Args,Best,Rest),
ordenar(Rest,Criterio,Args,RestOrd),!.
buscar_melhor([H],_,_,H,[])
:- !.
buscar_melhor([H|L],Criterio,Args,Best,[BB|Rest])
:- buscar_melhor(L,Criterio,Args,B,Rest),
score(H,Criterio,Args,SH), score(B,Criterio,Args,SB),
( SH>SB, P = [H,B]; P = [B,H] ),
P = [Best,BB].
score(X,Criterio,Args,SX)
:- Term =.. [Criterio,X,SX|Args],
call(Term).
criterio_exemplo(X,1,Arg)
:- member(X,Arg).
criterio_exemplo(_,0,_).
list_length([],0)
:- !.
list_length([_|T],M)
:- list_length(T,N),
M is N+1.
member_extract(X,[X|L],L)
:- !.
member_extract(X,[Y|L],[Y|LL])
:- member_extract(X,L,LL),!.
intersection_bt([],S2,[]).
intersection_bt([X|S1],S2,[X|S])
:- member_bt(X,S2),
intersection_bt(S1,S2,S).
intersection_bt([_|S1],S2,S)
:- intersection_bt(S1,S2,S).
strict_intersection_bt([],S2,[]).
strict_intersection_bt([X|S1],S2,[X|S])
:- strict_member_bt(X,S2),
strict_intersection_bt(S1,S2,S).
strict_intersection_bt([_|S1],S2,S)
:- strict_intersection_bt(S1,S2,S).
contained([],L)
:- !.
contained([H|T],L)
:- member(H,L),
contained(T,L).
no_repeatitions([])
:- !.
no_repeatitions([X|L])
:- strict_member(X,L),!,fail.
no_repeatitions([_|L])
:- no_repeatitions(L),!.
%%
/*member(X,[X|_])
:- !.
member(X,[_|L])
:- member(X,L).*/
member_bt(X,[X|_]).
member_bt(X,[_|L])
:- member_bt(X,L).
strict_member(X,[Y|L])
:- X == Y, !.
strict_member(X,[_|L])
:- strict_member(X,L),!.
strict_member_bt(X,[Y|L])
:- X == Y.
strict_member_bt(X,[_|L])
:- strict_member_bt(X,L).
variable_set([],[])
:-!.
variable_set([T|LT],LVS)
:- varlist(T,TVS),
variable_set(LT,LTVS),
append(TVS,LTVS,LVS),!.
term_variable_set(T,VS)
:- T =.. [F|A],
filter_constants(A,VS).
filter_constants([],[])
:- !.
filter_constants([CV|LCV],[CV|LV])
:- var(CV), filter_constants(LCV,LV).
filter_constants([_|LCV],LV)
:- filter_constants(LCV,LV).
argument_set([],[])
:- !.
argument_set([T|LT],LAS)
:- T =.. [F|LA],
argument_set(LT,LTAS),
append(LA,LTAS,LAS),!.
/*append([],L,L)
:- !.
append([H|T],L,[H|L1])
:- append(T,L,L1).*/
reunion([],L,L)
:- !.
reunion([H|T],L,L1)
:- member(H,L),
reunion(T,L,L1),!.
reunion([H|T],L,[H|T1])
:- reunion(T,L,T1),!.
make_flat([],[]) :- !.
make_flat([H|T],L)
:- make_flat(T,TF),
append(H,TF,L),!.
%nao interessa:
%flat_special([],_,[]) :- !.
%
%flat_special([[G,H]|T],G,L)
% :- flat_special(T,G,TF),
% append(H,TF,L),!.
%JROSAS
dynamic_functor(P):-
predicate_property(P,(dynamic)).
next_predicate(P,Criterio)
:- current_predicate(F,P),dynamic_functor(P),
T =.. [Criterio,P],
call(T).
next_predicate(P,Criterio,Frame)
:- current_predicate(F,P),dynamic_functor(P),
T=..[Criterio,P],
functor(P,Frame,Arity),
call(T).
%%
all_predicate_functors(Criterio,LPF)
:- all_predicate_functors(Criterio,[],LPF).
all_predicate_functors(Criterio,L1,L2)
:- next_predicate(P,Criterio),
P =.. [F|_],not(member(F,L1)),
all_predicate_functors(Criterio,[F|L1],L2),!.
all_predicate_functors(_,L,L) :- !.
%%
%%
map_apply(IL,Transformation,OL)
:- T =.. [Transformation,X,Y],
setof(Y,X^(member_bt(X,IL),call(T)),OL).
map_remove_if(IL,Criterio,OL)
:- T =.. [Criterio,X],
setof(X,(member_bt(X,IL),\+ call(T)),OL).
make_a_vector(_,_,[],N)
:- N<1,!.
make_a_vector(Element,Par,[E|Vect],N)
:- T =.. [Element,E,Par], call(T),
M is N-1, make_a_vector(Element,Par,Vect,M),!.
append_strings([],[])
:- !.
append_strings([S],S)
:- !.
append_strings([S|LS],SS)
:- append_strings(LS,S1),
sprintf(SS,'%s %s',[S,S1]),!.
retract_all(T)
:- retract(T),fail.
retract_all(T).
print_list([]) :- !.
print_list([nl|L]) :- nl, print_list(L), !.
print_list([ln|L]) :- nl, print_list(L), !.
print_list([X|L]) :- write(X), print_list(L),!.
%
% Creation of Frames, Relations, Slots, Methods, Demons
% % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % %
%
% Object Representation:
%
% <Frame>(frame_).
% frame_(<Frame>).
%
% <Frame>(slot_,<Slot>,<SlotType>). SlotType in { data_or_method,relation }
% <Frame>(value_,<Slot>,<Value>).
%
% <Slot>(demon_,<Frame>,<Demon_Fn>,<Access>,<When>,<Effect>).
%
% <Relation>(relation_,<Transitivity>,<Slot_Restriction>,<Inverse>).
%
% % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % %
%% %% %% %% %% %% %% %% %% %% %%
%% <Frame>(frame_).
%% frame_(<Frame>).
%%
new_frame(Frame)
:- nonvar(Frame),
Term =.. [Frame,frame_],
not_clause(Term,true),
assert(Term),
% write('New frame created: '),write(Frame),nl,
AltTerm =.. [frame_,Frame],
assert(AltTerm),
!.
new_frame(Frame):-
format('Houve um problema a criar frame: ~w.', [Frame]),fail.
frame_exists(Frame)
:- nonvar(Frame),
Term =.. [Frame,frame_],
clause(Term,true),!.
%new_frame(Frame,Parent)
% :- new_frame(Frame),
% new_slot(Frame,isa,Parent).
show_frame(Frame)
:- nonvar(Frame),
Term =.. [Frame,frame_],
clause(Term,true),
frame_local_slots(Frame,LocS),
frame_valued_slots(Frame,VS),
reunion(LocS,VS,LS),
print_list([nl,' Frame: ',Frame,' {',nl]),
show_slots(Frame,LS),
print_list([' } ',nl,nl]),!.
show_slots(Frame,[])
:- !.
show_slots(Frame,[S|LS])
:- show_slot(Frame,S),
show_slots(Frame,LS),!.
show_slot(Frame,Slot)
:- frame_has_slot(Frame,Slot,_,LSD,LV,_),
print_list([' ',Slot,':']),
show_values(LV),
print_list([nl]),
(LSD==[]; print_list([' Demons: ']),
show_demons(LSD), print_list([nl]) ),!.
show_values([])
:- !.
show_values([V|LV])
:- print_list([' ',V]),
show_values(LV).
show_demons(LD)
:- show_values(LD).
delete_frame(Frame)
:- nonvar(Frame),
frame_local_slots(Frame,LLS),
delete_local_slots(Frame,LLS),
frame_valued_slots(Frame,LVS),
delete_valued_slots(Frame,LVS),
Term =.. [Frame,frame_],
clause(Term,true),
retract(Term),
AltTerm =.. [frame_,Frame],
retract(AltTerm),
!.
delete_frame(Frame):-
format('problema a apagar frame ~w.~n',[Frame]),fail.
delete_local_slots(Frame,[])
:- !.
delete_local_slots(Frame,[LS|LLS])
:- delete_slot(Frame,LS),
delete_local_slots(Frame,LLS).
delete_valued_slots(Frame,[])
:- !.
delete_valued_slots(Frame,[VS|LVS])
:- delete_slot_values(Frame,VS),
delete_valued_slots(Frame,LVS).
save_knowledge_base(F)
:- ( atom(F), name(F,F1); F = F1 ),
make_extension(F1,FE),
name(AF,FE),tell(AF),
write(':- alldynamic.'),nl,
list_knowledge_base_terms,
told.
list_knowledge_base_terms
:- next_predicate(P,knowledge_base_term),
write_clause(P),
fail.
list_knowledge_base_terms.
append_frame_kb(Frame,F)
:- tell(F),
write(':- alldynamic.'),nl,
list_kb_termf(Frame),
told.
list_kb_termf(Frame)
:- next_predicate(P,knowledge_base_term,Frame),
write_clause(P),
fail.
list_kb_termf(Frame).
get_extension([],[]).
get_extension([46|F],[46|F]).
get_extension([_|F],E)
:- get_extension(F,E),!.
make_extension(F,FE)
:- get_extension(F,E),
( E==[], append(F,".gol",FE); FE=F),!.
write_clause(P)
:- write(P), write('.'),nl,!.
knowledge_base_term(T)
:- clause(T,true), T =.. [_,K], K == frame_.
knowledge_base_term(T)
:- clause(T,true), T =.. [_,K,_,_], K == slot_.
knowledge_base_term(T)
:- clause(T,true), T =.. [_,K,_,_], K == value_.
knowledge_base_term(T)
:- clause(T,true), T =.. [_,K,_,_,_,_,_], K == demon_.
knowledge_base_term(T)
:- clause(T,true), T =.. [_,K,_,_,_], K == relation_.
load_knowledge_base(F)
:- reconsult(F),!.
%% %% %% %% %% %% %% %% %% %% %% %% %% %% %% %% %% %% %% %% %% %% %% %%
%% <Relation>(relation_,<Transitivity>,<Slot_Restriction>,<Inverse>).
%% relation_(<Relation>).
new_relation(Relation,_,_,_)
:- nonvar(Relation),
Term =.. [Relation,relation_,_,_,_],
clause(Term,true),!,
format('Houve um problema a criar relacao: ~w.', [Relation]),
fail.
new_relation(Slot,_,_,_)
:- nonvar(Slot),
Term =.. [Slot,slot_,_,_,_],
clause(Term,true),
!,
format('Houve um problema a criar relacao: ~w.', [Slot]),
fail.
new_relation(Relation,Transitivity,Restriction,Inverse)
:- nonvar(Relation),
validate_relation_spec(Transitivity,Restriction),
consistent_with_inverse(Relation,Inverse),
Term =.. [Relation,relation_,Transitivity,Restriction,Inverse],
assert(Term),
assert(relation_(Relation)),
!.
%% NAO ESTA A CRIAR INVERSA
new_relation(Relation,Transitivity,Restriction,Inverse):-
format('Houve um problema a criar relacao: (~w,~w,~w,~w) .',
[Relation,Transitivity,Restriction,Inverse]),
fail.
validate_relation_spec(Transitivity,Restriction)
:- validate_transitivity(Transitivity),
validate_restriction(Restriction),!.
validate_transitivity(transitive).
validate_transitivity(intransitive).
validate_restriction(all).
validate_restriction(none).
validate_restriction(inclusion([])).
validate_restriction(inclusion([_|_])).
validate_restriction(exclusion([])).
validate_restriction(exclusion([_|_])).
consistent_with_inverse(Relation,nil)
:- !.
consistent_with_inverse(Relation,Inverse)
:- Inv =.. [Inverse,relation_,_,_,Relation],
clause(Inv,true),!.
consistent_with_inverse(Relation,Inverse).
%%
delete_relation(Relation)
:- current_predicate(_,P),dynamic_functor(P),
clause(P,true),
P =.. [F,X,Y,Z], X == slot_, Y == Relation,
format('problema em delete_relation ~w.~n',[Relation]),
!, fail.
delete_relation(Relation)
:- nonvar(Relation),
Term =.. [Relation,relation_,_,_,_],
retract(Term),
retract(relation_(Relation)),
!.
/*%% delete_relation(Relation)
%% :- nonvar(Relation),
%% T1 =.. [Relation,relation_,_,_,Inverse], retract(T1),
%% retractall(relation_(Relation)),
%% T2 =.. [Inverse,relation_,_,_,Relation], retract(T2),
%% retractall(relation_(Inverse)),
%% !.*/
delete_relation(Relation):-
format('Problema em delete_relation ~w.~n',[Relation]),
!, fail.
%%
term_is_relation(T)
:- T =.. [_,relation_,_,_,_],!.
current_relations(ListR)
:- all_predicate_functors(term_is_relation,ListR).
relation_definition(Rel,Trans,SR,Inv)
:- nonvar(Rel),
T =.. [Rel,relation_,Trans,SR,Inv],
clause(T,true),!.
%% %% %% %% %% %% %% %% %% %% %% %% %%
%% <Frame>(slot_,<Slot>).
%%
new_slot(Frame,Slot)
:- (var(Frame);var(Slot)),
format('Houve um problema a criar slot: (~w,~w).', [Frame,Slot]),
!,
fail.
new_slot(Frame,Slot)
:- T1 =.. [Frame,frame_],
not_clause(T1,true),
format('Houve um problema a criar slot: (~w,~w).', [Frame,Slot]),
!,
fail.
new_slot(Frame,Slot)
:- frame_has_slot(Frame,Slot,_,_,_,_),
format('Houve um problema a criar slot: (~w,~w).', [Frame,Slot]),
!,
fail.
new_slot(Frame,Slot)
:- determine_slot_type(Slot,SlotType),
T1 =.. [Frame,slot_,Slot,SlotType],
assert(T1),
assert( slot_(Frame, Slot)),
!.
new_slot(Frame,Slot):-
format('Problema em new_slot(~w,~w)~n',[Frame,Slot]),
fail.
%%
new_slot(Frame,Slot,Value)
:- new_slot(Frame,Slot),
determine_slot_type(Slot,SlotType),
put_new_value(Frame,Slot,SlotType,Value),!.
new_slot(Frame,Slot,Value):-
format('Problema em new_slot(~w,~w,~w)~n',[Frame,Slot,Value]),
fail.
%%
delete_slot(Frame,Slot)
:- frame_has_slot(Frame,Slot,_,_,_,_),
delete_slot_values(Frame,Slot),
Term =.. [Frame,slot_,Slot,_],
retract(Term),
retract( slot_(Frame, Slot)),
!.
delete_slot(Frame,Slot):-
format('Problema a apagar slot (~w,~w).~n',[Frame,Slot]),
fail.
%% %% %% %% %% %% %% %% %% %% %% %% %% %% %% %% %% %% %% %% %%
%% <Slot>(demon_,<Frame>,<Demon_Fn>,<Access>,<When>,<Effect>).
%% demon_(Frame,Slot)
%%
%% Access in { if_read, if_write, if_delete, if_execute }
%% When in { before, after }
%% Effect in { alter_value, side_effect }
%%
new_demon(Frame,Slot,Demon_Fn,Access,When,Effect)
:- nonvar(Frame),nonvar(Slot),nonvar(Demon_Fn),
Ilegal =.. [Slot,demon_,Frame,Demon_Fn,_,_,_],
not_clause(Ilegal,true),
remove_all_demons(Frame,Slot),
Term =.. [Slot,demon_,Frame,Demon_Fn,Access,When,Effect],
assert(Term),
assert(demon_(Frame,Slot)),
!.
new_demon(Frame,Slot,Demon_Fn,Access,When,Effect):-
format('Houve um problema a criar demonio: (~w,~w,~w,~w,~w,~w).~n', [Frame,Slot,Demon_Fn,Access,When,Effect]),
fail.
add_demon(Frame,Slot,Demon_Fn,Access,When,Effect)
:- nonvar(Frame),nonvar(Slot),nonvar(Demon_Fn),
Ilegal =.. [Slot,demon_,Frame,Demon_Fn,_,_,_],
not_clause(Ilegal,true),
Term =.. [Slot,demon_,Frame,Demon_Fn,Access,When,Effect],
assert(Term),
assert(demon_(Frame, Slot)),
!.
add_demon(Frame,Slot,Demon_Fn,Access,When,Effect):-
format('Houve um problema a adicionar demonio: (~w,~w,~w,~w,~w,~w).~n', [Frame,Slot,Demon_Fn,Access,When,Effect]),
fail.
remove_all_demons(Frame,Slot)
:- Term =.. [Slot,demon_,Frame,_,_,_,_],
retract_all(Term),
retractall( demon_(Frame, Slot) ).
%%
fire_demons(_,_,_,[],_,_,_,_,In,In).
fire_demons(Frame,Slot,ST,[Dem|LDem],Access,Number,When,Effect,In,Out)
:- fire_demon(Frame,Slot,ST,Dem,Access,Number,When,Effect,In,Out1),
fire_demons(Frame,Slot,ST,LDem,Access,Number,When,Effect,Out1,Out).
fire_demon(Frame,Slot,ST,Demon_Fn,Access,Number,When,side_effect,In,Out)
:- Demon =.. [Slot,demon_,F,Demon_Fn,Access,When,side_effect],
clause(Demon,true),
DemonCall =.. [Demon_Fn,Frame,Slot,In,Out],
( ground(Out); \+ ground(Out),Out=In ),
( call(DemonCall); !, When \== before ).
fire_demon(_,_,_,_,_,_,_,side_effect,In,In).
fire_demon(Frame,Slot,ST,Demon_Fn,Access,one,When,alter_value,In,Out)
:- Demon =.. [Slot,demon_,F,Demon_Fn,Access,When,alter_value],
clause(Demon,true),
DemonCall =.. [Demon_Fn,Frame,Slot,In,Out],
call(DemonCall).
fire_demon(_,_,_,_,_,one,_,alter_value,In,In).
fire_demon(Frame,Slot,ST,D_Fn,Acc,many,Wh,alter_value,[],[]) :- !.
fire_demon(Frame,Slot,ST,D_Fn,Acc,many,Wh,alter_value,[InV|InL],[OutV|OutL])
:- fire_demon(Frame,Slot,ST,D_Fn,Acc,one,Wh,alter_value,InV,OutV),
fire_demon(Frame,Slot,ST,D_Fn,Acc,many,Wh,alter_value,InL,OutL),!.
%% %% %% %% %% %% %% %% %% %% %% %% %% %%
%% <Frame>(value_,<Slot>,<Value>).
%%
new_value(Frame,Slot,Value)
:- nonvar(Frame),nonvar(Slot),nonvar(Value),
frame_has_slot(Frame,Slot,ST,LSD,_,_),
fire_demons(Frame,Slot,ST,LSD,if_write,one,before,side_effect,Value,_),
fire_demons(Frame,Slot,ST,LSD,if_write,one,before,alter_value,Value,V),
delete_slot_values(Frame,Slot),
put_new_value(Frame,Slot,ST,V),
fire_demons(Frame,Slot,ST,LSD,if_write,one,after,side_effect,Value,_),!.
add_value(Frame,Slot,Value)
:- nonvar(Frame),nonvar(Slot),nonvar(Value),
frame_has_slot(Frame,Slot,ST,LSD,_,_),
fire_demons(Frame,Slot,ST,LSD,if_write,one,before,side_effect,Value,_),
fire_demons(Frame,Slot,ST,LSD,if_write,one,before,alter_value,Value,V),
put_new_value(Frame,Slot,ST,V),
fire_demons(Frame,Slot,ST,LSD,if_write,one,after,side_effect,Value,_),!.
put_new_value(Frame,Slot,data_or_method,Value)
:- Term =.. [Frame,value_,Slot,Value],
assert(Term),!.
put_new_value(Frame,Relation,relation,Related)
:- T1 =.. [Related,frame_],clause(T1,true),
T2 =.. [Relation,relation_,_,_,Inverse],clause(T2,true),
T3 =.. [Frame,value_,Relation,Related],
assert(T3),
put_in_related(Frame,Inverse,Related).
put_in_related(Frame,nil,Related)
:- !.
put_in_related(Frame,Inverse,Related)
:- T1 =.. [Related,value_,Inverse,Frame],
assert(T1),!.
new_values(Frame,Slot,LV)
:- nonvar(Frame),nonvar(Slot),
frame_has_slot(Frame,Slot,ST,LSD,_,_),
fire_demons(Frame,Slot,ST,LSD,if_write,many,before,side_effect,LV,_),
fire_demons(Frame,Slot,ST,LSD,if_write,many,before,alter_value,LV,LV1),
delete_slot_values(Frame,Slot),
put_new_values(Frame,Slot,ST,LV1),
fire_demons(Frame,Slot,ST,LSD,if_write,many,after,side_effect,LV,_),!.
new_values(Frame,Slot,LV):-
format('Houve um problema em new_values: (~w,~w,~w).~n', [Frame,Slot,LV]),
fail.
put_new_values(Frame,Slot,_,[])
:- !.
put_new_values(Frame,Slot,SlotType,[V|LV])
:- put_new_value(Frame,Slot,SlotType,V),
put_new_values(Frame,Slot,SlotType,LV).
add_values(Frame,Slot,LV)
:- nonvar(Frame),nonvar(Slot),
frame_has_slot(Frame,Slot,ST,LSD,_,_),
fire_demons(Frame,Slot,ST,LSD,if_write,many,before,side_effect,LV,_),
fire_demons(Frame,Slot,ST,LSD,if_write,many,before,alter_value,LV,LV1),
put_new_values(Frame,Slot,SlotType,LV1),
fire_demons(Frame,Slot,ST,LSD,if_write,many,after,side_effect,LV,_),!.
%%
get_value(Frame,Slot,Value)
:- frame_has_slot(Frame,Slot,ST,LSD,LV,_),
fire_demons(Frame,Slot,ST,LSD,if_read,one,before,side_effect,LV,_),
( LV = [], V= nil; LV = [V|_] ),
fire_demons(Frame,Slot,ST,LSD,if_read,one,after,alter_value,V,Value),
fire_demons(Frame,Slot,ST,LSD,if_read,one,after,side_effect,LV,_),!.
get_values(Frame,Slot,LV)
:- frame_has_slot(Frame,Slot,ST,LSD,LV1,_),
fire_demons(Frame,Slot,ST,LSD,if_read,many,before,side_effect,LV1,_),
fire_demons(Frame,Slot,ST,LSD,if_read,many,after,alter_value,LV1,LV),
fire_demons(Frame,Slot,ST,LSD,if_read,many,after,side_effect,LV1,_),!.
%%
frame_slot_values(Frame,Slot,Values)
:- nonvar(Frame), nonvar(Slot),
Term =.. [Frame,value_,Slot,Val],
bagof(Val,clause(Term,true),Values),!.
frame_slot_values(_,_,[]).
%%
delete_value(Frame,Relation,Related)
:- nonvar(Frame),nonvar(Relation),
frame_has_slot(Frame,Relation,relation,SlotDemons,_,_),
fire_demons(Frame,Slot,ST,LSD,if_delete,one,before,side_effect,Related,_),
T1 =.. [Frame,value_,Relation,Related],
retract_all(T1),
T2 =.. [Relation,relation_,_,_,Inverse],clause(T2,true),
delete_in_related(Frame,Inverse,Related),
fire_demons(Frame,Slot,ST,LSD,if_delete,one,after,side_effect,Related,_),!.
delete_in_related(Frame,nil,Related)
:- !.
delete_in_related(Frame,Inverse,Related)
:- determine_slot_demons_frame(Related,Inverse,SlotDemons),
T1 =.. [Related,value_,Inverse,Frame],
retract_all(T1),!.
delete_value(Frame,Slot,Val)
:- nonvar(Frame),nonvar(Slot),
ST = data_or_method,frame_has_slot(Frame,Slot,ST,LSD,_,_),
fire_demons(Frame,Slot,ST,LSD,if_delete,one,before,side_effect,Val,_),
fire_demons(Frame,Slot,ST,LSD,if_delete,one,before,alter_value,Val,V),
Term =.. [Frame,value_,Slot,V],
retract_all(Term),
fire_demons(Frame,Slot,ST,LSD,if_delete,one,after,side_effect,Val,_),!.
delete_values(Frame,Slot)
:- nonvar(Frame),nonvar(Slot),
ST = data_or_method,frame_has_slot(Frame,Slot,ST,LSD,LV,_),
%determine_slot_type(Slot,SlotType),
fire_demons(Frame,Slot,ST,LSD,if_delete,many,before,side_effect,LV,_),
delete_slot_values(Frame,Slot),
fire_demons(Frame,Slot,ST,LSD,if_delete,many,after,side_effect,LV,_),!.
delete_slot_values(Frame,Slot)
:- nonvar(Frame), nonvar(Slot),
T1 =.. [Frame,value_,Slot,Value],
( setof(Value,clause(T1,true),LVal); LVal = []),
determine_slot_type(Slot,SlotType),
delete_slot_values(Frame,Slot,SlotType,LVal).
delete_slot_values(Frame,Slot,data_or_method,[]).
delete_slot_values(Frame,Slot,data_or_method,[V|LV])
:- remove_value(Frame,Slot,V),
delete_slot_values(Frame,Slot,data_or_method,LV).
delete_slot_values(Frame,Relation,relation,LR)
:- T =.. [Relation,relation_,_,_,Inverse], clause(T,true),
delete_all_links(Frame,Relation,Inverse,LR).
delete_all_links(Frame,Relation,Inverse,[]).
delete_all_links(Frame,Relation,Inverse,[R|LR])
:- remove_value(Frame,Relation,R),
delete_in_related(Frame,Inverse,R),
delete_all_links(Frame,Relation,Inverse,LR).
remove_value(Frame,Slot,Val)
:- Term =.. [Frame,value_,Slot,Val],
retract_all(Term).
%%
call_method_0(Frame,Slot)
:- call_method(Frame,Slot,[]).
call_method_1(Frame,Slot,P)
:- call_method(Frame,Slot,[P]).
call_method_2(Frame,Slot,P1,P2)
:- call_method(Frame,Slot,[P1,P2]).
call_method_3(Frame,Slot,P1,P2,P3)
:- call_method(Frame,Slot,[P1,P2,P3]).
call_method(Frame,Slot,LP)
:- nonvar(Frame), nonvar(Slot),
ST = data_or_method,frame_has_slot(Frame,Slot,ST,LSD,[Val|_],_),
atom(Val),
fire_demons(Frame,Slot,ST,LSD,if_execute,many,before,side_effect,LP,_),
fire_demons(Frame,Slot,ST,LSD,if_execute,many,before,alter_value,LP,LP1),
Term =.. [Val,Frame|LP1],
call(Term),
fire_demons(Frame,Slot,ST,LSD,if_execute,many,after,side_effect,LP,_),!.
call_method(Frame,Owner^Slot,LP)
:- nonvar(Frame), nonvar(Slot), nonvar(Owner),
ST = data_or_method,frame_has_slot(Owner,Slot,ST,LSD,[Mth|_],Path),
atom(Mth),
frame_inherits_owner_slot(Frame,Owner,Slot,Path),
fire_demons(Frame,Slot,ST,LSD,if_execute,many,before,side_effect,LP,_),
fire_demons(Frame,Slot,ST,LSD,if_execute,many,before,alter_value,LP,LP1),
Term =.. [Mth,Frame|LP1],
call(Term),
fire_demons(Frame,Slot,ST,LSD,if_execute,many,after,side_effect,LP,_),!.
frame_inherits_owner_slot(Frame,Owner,Slot,Path)
:- T1 =.. [Frame,value_,Rel,Owner], clause(T1,true),
T2 =.. [Rel,relation_,_,SR,_], clause(T2,true),
frame_local_slots(Owner,L1),
consider_slot_restriction(L1,SR,L2),
frame_inherits_owner_slot(Frame,Owner,Slot,Path,L2).
frame_inherits_owner_slot(Frame,Owner,Slot,[Owner],ConsiderSolts)
:- member(Slot,ConsiderSolts),!.
frame_inherits_owner_slot(Frame,Owner,Slot,[Owner,Next|_],ConsiderSolts)
:- T =.. [Owner,value_,Rel,Next], clause(T,true),
member(Rel,ConsiderSolts),!.
%
% Relations-related Predicates:
% % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % %
frame_has_slot(Frame,Slot,SlotType,SlotDemons,Values,[Frame|Path])
:- frame_has_slot(Frame,Slot,all,transitive_intransitively,_,LV,Path),
determine_slot_type(Slot,SlotType),
determine_slot_demons([Frame|Path],Slot,SlotDemons),
determine_slot_values([Frame|Path],Slot,Values). %,!.
frame_has_slot(Frame,InverseRel,relation,[],Values,[])
:- frame_actual_relations(Frame,AR),
member(InverseRel,AR),
frame_slot_values(Frame,InverseRel,Values),!.
%%
determine_slot_type(Slot,relation)
:- T1 =.. [Slot,relation_,_,_,_],
clause(T1,true),!.
determine_slot_type(Slot,data_or_method) :- !.
determine_slot_demons_frame(Frame,Slot,SlotDemons)
:- T1 =.. [Slot,demon_,Frame,Demon_Fn,A,W,E],
setof(Demon_Fn,(A,W,E)^clause(T1,true),SlotDemons),!.
determine_slot_demons_frame(_,_,[]) :- !.
determine_slot_demons([Frame|Path],Slot,SlotDemons)
:- T1 =.. [Slot,demon_,Frame,Demon_Fn,A,W,E],
setof(Demon_Fn,(A,W,E)^clause(T1,true),SlotDemons),!.
determine_slot_demons([Frame|Path],Slot,Values)
:- determine_slot_demons(Path,Slot,Values), !.
determine_slot_demons([],_,[])
:- !.
determine_slot_values([Frame|Path],Slot,Values)
:- frame_valued_slots(Frame,LS),