Function isBinaryOp

lib/token.h:457–459

        return mTokType == eIncDecOp;
    }
    bool isBinaryOp() const {
        return astOperand1() != nullptr && astOperand2() != nullptr;
    }
    bool isUnaryOp(const std::string &s) const {
        return s == mStr && astOperand1() != nullptr && astOperand2() == nullptr;
    }