19 static bool implies(const LExpr *LHS, bool LNeg, const LExpr *RHS, bool RNeg) {  in implies()  argument
28     return implies(LHS, LNeg, A->left(), RNeg) &&  in implies()
29            implies(LHS, LNeg, A->right(), RNeg);  in implies()
38     return implies(LHS, LNeg, A->left(), RNeg) ||  in implies()
39            implies(LHS, LNeg, A->right(), RNeg);  in implies()
61     return implies(LHS, LNeg, cast<Not>(RHS)->exp(), !RNeg);  in implies()
68   switch (LHS->kind()) {  in implies()
74     return LNeg ? LeftAndOperator(cast<And>(LHS))  in implies()
75                 : LeftOrOperator(cast<And>(LHS));  in implies()
81     return LNeg ? LeftOrOperator(cast<Or>(LHS))  in implies()
82                 : LeftAndOperator(cast<Or>(LHS));  in implies()
86     return implies(cast<Not>(LHS)->exp(), !LNeg, RHS, RNeg);  in implies()
98   return cast<Terminal>(LHS)->expr() == cast<Terminal>(RHS)->expr();  in implies()
105 bool implies(const LExpr *LHS, const LExpr *RHS) {  in implies()  argument
107   return ::implies(LHS, false, RHS, false);  in implies()