| expression_not_var(Variable2) :- | |
| not(variable_name(Variable2)), | |
| expression_not_var1(Variable2,start). | |
| expression_not_var1(Variable1,_) :- | |
| single_item_not_var(Variable1),!. | |
| expression_not_var1([],_) :- !. | |
| expression_not_var1(Variable1,Position) :- | |
| (Position=start->not(variable_name(Variable1));true), | |
| Variable1=[Variable1a|Variable1b], | |
| not(variable_name(Variable1a)), | |
| expression_not_var1(Variable1a,start), | |
| expression_not_var1(Variable1b,non_start),!. | |
| single_item_not_var(A) :- predicate_or_rule_name(A),!. | |
| single_item_not_var(A) :- string(A),!. | |
| single_item_not_var(A) :- number(A),!. | |
| single_item_not_var(A) :- atom(A),!. | |
| single_item_not_var(A) :- blob(A,stream),!. | |
| single_item_or_var(A) :- predicate_or_rule_name(A),!. | |
| single_item_or_var(A) :- variable_name(A),!. | |
| single_item_or_var(A) :- string(A),!. | |
| single_item_or_var(A) :- number(A),!. | |
| single_item_or_var(A) :- atom(A),!. | |
| single_item_or_var(A) :- blob(A,stream),!. | |