Method eval

source/ast/builtins/StringMethods.cpp:204–215

                               builtins.realType, true) {}

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

        std::string str = cv.str();
        std::erase(str, '_');

        double result = strToDouble(str).value_or(0.0);
        return real_t(result);
    }
};

class StringItoAMethod : public SimpleSystemSubroutine {