18f0de5486
git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@1245 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
37 lines
1.1 KiB
Prolog
37 lines
1.1 KiB
Prolog
:- module(clpbn_utils, [
|
|
clpbn_not_var_member/2,
|
|
clpbn_var_member/2,
|
|
check_for_hidden_vars/3]).
|
|
|
|
%
|
|
% It may happen that variables from a previous query may still be around.
|
|
% and be used in the next evaluation, so we cannot trust the list of *new*
|
|
% variables.
|
|
%
|
|
check_for_hidden_vars([], _, []).
|
|
check_for_hidden_vars([V|Vs], AllVs0, [V|NVs]) :-
|
|
check_for_extra_variables(V,AllVs0, AllVs, Vs, IVs),
|
|
check_for_hidden_vars(IVs, AllVs, NVs).
|
|
|
|
check_for_extra_variables(V,AllVs0, AllVs, Vs, IVs) :-
|
|
var(V),
|
|
clpbn:get_atts(V, [dist(_,_,[V1|LV])]), !,
|
|
add_old_variables([V1|LV], AllVs0, AllVs, Vs, IVs).
|
|
check_for_extra_variables(_,AllVs, AllVs, Vs, Vs).
|
|
|
|
add_old_variables([], AllVs, AllVs, Vs, Vs).
|
|
add_old_variables([V1|LV], AllVs0, AllVs, Vs, IVs) :-
|
|
clpbn_not_var_member(AllVs0, V1), !,
|
|
add_old_variables(LV, [V1|AllVs0], AllVs, [V1|Vs], IVs).
|
|
add_old_variables([_|LV], AllVs0, AllVs, Vs, IVs) :-
|
|
add_old_variables(LV, AllVs0, AllVs, Vs, IVs).
|
|
|
|
clpbn_var_member([V1|_], V) :- V1 == V, !.
|
|
clpbn_var_member([_|Vs], V) :-
|
|
clpbn_var_member(Vs, V).
|
|
|
|
clpbn_not_var_member([], _).
|
|
clpbn_not_var_member([V1|Vs], V) :- V1 \== V,
|
|
clpbn_not_var_member(Vs, V).
|
|
|