Method eval

source/ast/builtins/StringMethods.cpp:114–143

        ignoreCase(ignoreCase) {}

    ConstantValue eval(EvalContext& context, const Args& args, SourceRange,
                       const CallExpression::SystemCallInfo&) const final {
        auto lhsCv = args[0]->eval(context);
        auto rhsCv = args[1]->eval(context);
        if (!lhsCv || !rhsCv)
            return nullptr;

        std::string& lhs = lhsCv.str();
        std::string& rhs = rhsCv.str();

        int result;
        if (ignoreCase) {
            // No convenient way to do this with standard lib functions :(
            const char* p1 = lhs.c_str();
            const char* p2 = rhs.c_str();
            while ((result = charToLower(*p1) - charToLower(*p2++)) == 0) {
                if (*p1++ == '\0')
                    break;
            }
        }
        else {
            result = lhs.compare(rhs);
            if (result < 0)
                result = -1;
            else if (result > 0)
                result = 1;
        }

        return SVInt(32, uint64_t(result), true);
    }

private:
    bool ignoreCase;