8ed6f693bb
git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@1576 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
240 lines
7.8 KiB
Prolog
240 lines
7.8 KiB
Prolog
/*************************************************************************
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* *
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* YAP Prolog *
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* *
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* Yap Prolog was developed at NCCUP - Universidade do Porto *
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* *
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* Copyright L.Damas, V.S.Costa and Universidade do Porto 1985-1997 *
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* *
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**************************************************************************
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* *
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* File: tabling.yap *
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* Last rev: 8/2/88 *
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* mods: *
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* comments: support tabling predicates *
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* *
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*************************************************************************/
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:- meta_predicate table(:), is_tabled(:), tabling_mode(:), abolish_table(:), show_table(:), table_statistics(:).
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/******************
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* table/1 *
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******************/
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table(Pred) :-
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'$current_module'(Mod),
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'$do_table'(Mod,Pred).
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'$do_table'(Mod,Pred) :-
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var(Pred), !,
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'$do_error'(instantiation_error,table(Mod:Pred)).
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'$do_table'(_,Mod:Pred) :- !,
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'$do_table'(Mod,Pred).
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'$do_table'(_,[]) :- !.
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'$do_table'(Mod,[HPred|TPred]) :- !,
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'$do_table'(Mod,HPred),
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'$do_table'(Mod,TPred).
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'$do_table'(Mod,(Pred1,Pred2)) :- !,
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'$do_table'(Mod,Pred1),
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'$do_table'(Mod,Pred2).
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'$do_table'(Mod,PredName/PredArity) :-
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atom(PredName),
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integer(PredArity),
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functor(PredFunctor,PredName,PredArity), !,
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'$set_table'(Mod,PredFunctor).
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'$do_table'(Mod,Pred) :-
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'$do_error'(type_error(callable,Mod:Pred),table(Mod:Pred)).
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'$set_table'(Mod,PredFunctor) :-
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'$undefined'(PredFunctor,Mod), !,
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'$c_table'(Mod,PredFunctor).
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'$set_table'(Mod,PredFunctor) :-
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'$flags'(PredFunctor,Mod,Flags,Flags),
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Flags /\ 0x1991F880 =:= 0,
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'$c_table'(Mod,PredFunctor), !.
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'$set_table'(Mod,PredFunctor) :-
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functor(PredFunctor,PredName,PredArity),
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'$do_error'(permission_error(modify,table,Mod:PredName/PredArity),table(Mod:PredName/PredArity)).
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/**********************
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* is_tabled/1 *
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**********************/
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is_tabled(Pred) :-
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'$current_module'(Mod),
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'$do_is_tabled'(Mod,Pred).
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'$do_is_tabled'(Mod,Pred) :-
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var(Pred), !,
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'$do_error'(instantiation_error,is_tabled(Mod:Pred)).
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'$do_is_tabled'(_,Mod:Pred) :- !,
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'$do_is_tabled'(Mod,Pred).
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'$do_is_tabled'(_,[]) :- !.
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'$do_is_tabled'(Mod,[HPred|TPred]) :- !,
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'$do_is_tabled'(Mod,HPred),
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'$do_is_tabled'(Mod,TPred).
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'$do_is_tabled'(Mod,(Pred1,Pred2)) :- !,
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'$do_is_tabled'(Mod,Pred1),
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'$do_is_tabled'(Mod,Pred2).
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'$do_is_tabled'(Mod,PredName/PredArity) :-
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atom(PredName),
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integer(PredArity),
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functor(PredFunctor,PredName,PredArity),
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'$flags'(PredFunctor,Mod,Flags,Flags), !,
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Flags /\ 0x000040 =\= 0.
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'$do_is_tabled'(Mod,Pred) :-
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'$do_error'(type_error(callable,Mod:Pred),is_tabled(Mod:Pred)).
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/*************************
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* tabling_mode/2 *
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*************************/
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tabling_mode(Pred,Options) :-
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'$current_module'(Mod),
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'$do_tabling_mode'(Mod,Pred,Options).
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'$do_tabling_mode'(Mod,Pred,Options) :-
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var(Pred), !,
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'$do_error'(instantiation_error,tabling_mode(Mod:Pred,Options)).
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'$do_tabling_mode'(_,Mod:Pred,Options) :- !,
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'$do_tabling_mode'(Mod,Pred,Options).
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'$do_tabling_mode'(_,[],_) :- !.
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'$do_tabling_mode'(Mod,[HPred|TPred],Options) :- !,
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'$do_tabling_mode'(Mod,HPred,Options),
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'$do_tabling_mode'(Mod,TPred,Options).
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'$do_tabling_mode'(Mod,(Pred1,Pred2),Options) :- !,
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'$do_tabling_mode'(Mod,Pred1,Options),
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'$do_tabling_mode'(Mod,Pred2,Options).
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'$do_tabling_mode'(Mod,PredName/PredArity,Options) :-
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atom(PredName),
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integer(PredArity),
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functor(PredFunctor,PredName,PredArity),
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'$flags'(PredFunctor,Mod,Flags,Flags), !,
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(Flags /\ 0x000040 =\= 0, !, '$set_tabling_mode'(Mod,PredFunctor,Options)
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;
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'$do_error'(domain_error(table,Mod:PredName/PredArity),tabling_mode(Mod:PredName/PredArity,Options))).
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'$do_tabling_mode'(Mod,Pred,Options) :-
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'$do_error'(type_error(callable,Mod:Pred),tabling_mode(Mod:Pred,Options)).
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'$set_tabling_mode'(Mod,PredFunctor,Options) :-
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var(Options), !,
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'$c_tabling_mode'(Mod,PredFunctor,Options).
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'$set_tabling_mode'(_,_,[]) :- !.
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'$set_tabling_mode'(Mod,PredFunctor,[HOption|TOption]) :- !,
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'$set_tabling_mode'(Mod,PredFunctor,HOption),
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'$set_tabling_mode'(Mod,PredFunctor,TOption).
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'$set_tabling_mode'(Mod,PredFunctor,(Option1,Option2)) :- !,
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'$set_tabling_mode'(Mod,PredFunctor,Option1),
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'$set_tabling_mode'(Mod,PredFunctor,Option2).
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'$set_tabling_mode'(Mod,PredFunctor,Option) :-
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(Option = batched ; Option = local ; Option = exec_answers ; Option = load_answers), !,
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'$c_tabling_mode'(Mod,PredFunctor,Option).
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'$set_tabling_mode'(Mod,PredFunctor,Options) :-
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functor(PredFunctor,PredName,PredArity),
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'$do_error'(domain_error(flag_value,tabling_mode+Options),tabling_mode(Mod:PredName/PredArity,Options)).
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/**************************
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* abolish_table/1 *
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**************************/
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abolish_table(Pred) :-
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'$current_module'(Mod),
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'$do_abolish_table'(Mod,Pred).
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'$do_abolish_table'(Mod,Pred) :-
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var(Pred), !,
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'$do_error'(instantiation_error,abolish_table(Mod:Pred)).
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'$do_abolish_table'(_,Mod:Pred) :- !,
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'$do_abolish_table'(Mod,Pred).
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'$do_abolish_table'(_,[]) :- !.
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'$do_abolish_table'(Mod,[HPred|TPred]) :- !,
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'$do_abolish_table'(Mod,HPred),
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'$do_abolish_table'(Mod,TPred).
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'$do_abolish_table'(Mod,(Pred1,Pred2)) :- !,
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'$do_abolish_table'(Mod,Pred1),
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'$do_abolish_table'(Mod,Pred2).
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'$do_abolish_table'(Mod,PredName/PredArity) :-
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atom(PredName),
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integer(PredArity),
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functor(PredFunctor,PredName,PredArity),
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'$flags'(PredFunctor,Mod,Flags,Flags), !,
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(Flags /\ 0x000040 =\= 0, !, '$c_abolish_table'(Mod,PredFunctor)
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;
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'$do_error'(domain_error(table,Mod:PredName/PredArity),abolish_table(Mod:PredName/PredArity))).
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'$do_abolish_table'(Mod,Pred) :-
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'$do_error'(type_error(callable,Mod:Pred),abolish_table(Mod:Pred)).
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/***********************
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* show_table/1 *
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***********************/
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show_table(Pred) :-
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'$current_module'(Mod),
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'$do_show_table'(Mod,Pred).
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'$do_show_table'(Mod,Pred) :-
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var(Pred), !,
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'$do_error'(instantiation_error,show_table(Mod:Pred)).
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'$do_show_table'(_,Mod:Pred) :- !,
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'$do_show_table'(Mod,Pred).
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'$do_show_table'(_,[]) :- !.
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'$do_show_table'(Mod,[HPred|TPred]) :- !,
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'$do_show_table'(Mod,HPred),
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'$do_show_table'(Mod,TPred).
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'$do_show_table'(Mod,(Pred1,Pred2)) :- !,
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'$do_show_table'(Mod,Pred1),
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'$do_show_table'(Mod,Pred2).
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'$do_show_table'(Mod,PredName/PredArity) :-
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atom(PredName),
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integer(PredArity),
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functor(PredFunctor,PredName,PredArity),
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'$flags'(PredFunctor,Mod,Flags,Flags), !,
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(Flags /\ 0x000040 =\= 0, !, '$c_show_table'(Mod,PredFunctor)
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;
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'$do_error'(domain_error(table,Mod:PredName/PredArity),show_table(Mod:PredName/PredArity))).
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'$do_show_table'(Mod,Pred) :-
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'$do_error'(type_error(callable,Mod:Pred),show_table(Mod:Pred)).
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/*****************************
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* table_statistics/1 *
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*****************************/
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table_statistics(Pred) :-
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'$current_module'(Mod),
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'$do_table_statistics'(Mod,Pred).
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'$do_table_statistics'(Mod,Pred) :-
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var(Pred), !,
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'$do_error'(instantiation_error,table_statistics(Mod:Pred)).
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'$do_table_statistics'(_,Mod:Pred) :- !,
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'$do_table_statistics'(Mod,Pred).
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'$do_table_statistics'(_,[]) :- !.
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'$do_table_statistics'(Mod,[HPred|TPred]) :- !,
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'$do_table_statistics'(Mod,HPred),
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'$do_table_statistics'(Mod,TPred).
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'$do_table_statistics'(Mod,(Pred1,Pred2)) :- !,
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'$do_table_statistics'(Mod,Pred1),
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'$do_table_statistics'(Mod,Pred2).
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'$do_table_statistics'(Mod,PredName/PredArity) :-
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atom(PredName),
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integer(PredArity),
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functor(PredFunctor,PredName,PredArity),
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'$flags'(PredFunctor,Mod,Flags,Flags), !,
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(Flags /\ 0x000040 =\= 0, !, '$c_table_statistics'(Mod,PredFunctor)
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;
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'$do_error'(domain_error(table,Mod:PredName/PredArity),table_statistics(Mod:PredName/PredArity))).
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'$do_table_statistics'(Mod,Pred) :-
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'$do_error'(type_error(callable,Mod:Pred),table_statistics(Mod:Pred)).
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