:- module(bdd, [cuda_extensional/2,
	cuda_rule/2,
	cuda_erase/1,
	cuda_eval/2,
	cuda_count/2]).

tell_warning :-
	print_message(warning,functionality(cuda)).

:- catch(load_foreign_files([cuda], [], init_cuda),_,fail) -> true ; tell_warning.

:- meta_predicate cudda_extensional(:,-).

cuda_extensional( Call, IdFacts) :-
	strip_module(Call, Mod, Name/Arity),
	functor(S, Name, Arity),
	findall( S, Mod:S, L),
	length( L, N ),
	load_facts( N, Arity, L, IdFacts ).

cuda_rule((Head :- Body) , IdRules) :-
	body_to_list( Body, L, [], 1, N),
	functor(Head, Na, Ar),
	load_rule( N, Ar, [Head|L], IdRules ).


body_to_list( (B1, B2), LF, L0, N0, NF) :- !,
	body_to_list( B1, LF, LI, N0, N1), 
	body_to_list( B2, LI, L0, N1, NF). 
body_to_list( B, [B|L], L, N0, N) :-
	N is N0+1.