851 int expr_contains_symbol(struct expr *dep, struct symbol *sym)  in expr_contains_symbol()  argument
853 	if (!dep)  in expr_contains_symbol()
856 	switch (dep->type) {  in expr_contains_symbol()
859 		return expr_contains_symbol(dep->left.expr, sym) ||  in expr_contains_symbol()
860 		       expr_contains_symbol(dep->right.expr, sym);  in expr_contains_symbol()
862 		return dep->left.sym == sym;  in expr_contains_symbol()
869 		return dep->left.sym == sym ||  in expr_contains_symbol()
870 		       dep->right.sym == sym;  in expr_contains_symbol()
872 		return expr_contains_symbol(dep->left.expr, sym);  in expr_contains_symbol()
879 bool expr_depends_symbol(struct expr *dep, struct symbol *sym)  in expr_depends_symbol()  argument
881 	if (!dep)  in expr_depends_symbol()
884 	switch (dep->type) {  in expr_depends_symbol()
886 		return expr_depends_symbol(dep->left.expr, sym) ||  in expr_depends_symbol()
887 		       expr_depends_symbol(dep->right.expr, sym);  in expr_depends_symbol()
889 		return dep->left.sym == sym;  in expr_depends_symbol()
891 		if (dep->left.sym == sym) {  in expr_depends_symbol()
892 			if (dep->right.sym == &symbol_yes || dep->right.sym == &symbol_mod)  in expr_depends_symbol()
897 		if (dep->left.sym == sym) {  in expr_depends_symbol()
898 			if (dep->right.sym == &symbol_no)  in expr_depends_symbol()