Method visitString

src/FormatVisitor.cpp:1094–1147

}

antlrcpp::Any FormatVisitor::visitString(LuaParser::StringContext* ctx) {
    if ((ctx->NORMALSTRING() == nullptr) && (ctx->CHARSTRING() == nullptr)) {
        cur_writer() << ctx->getText();
        return nullptr;
    }
    char quote = ctx->NORMALSTRING() != nullptr ? '\'' : '\"';
    tree::TerminalNode* tn = nullptr;

    switch (quote) {
        case '\"':
            if (config_.get<bool>("single_quote_to_double_quote")) {
                tn = ctx->CHARSTRING();
                break;
            }
            cur_writer() << ctx->getText();
            return nullptr;
        case '\'':
            if (config_.get<bool>("double_quote_to_single_quote")) {
                tn = ctx->NORMALSTRING();
                break;
            }
            cur_writer() << ctx->getText();
            return nullptr;
        default:
            assert(0);
    }

    std::string newstr = tn->getSymbol()->getText();

    std::regex re_single("'", std::regex_constants::extended);
    std::regex re_double("\"", std::regex_constants::extended);
    std::regex re_escapedsingle("\\\\'", std::regex_constants::extended);
    std::regex re_escapeddouble("\\\\\"", std::regex_constants::extended);

    if (quote == '\"') {
        newstr = regex_replace(newstr, re_escapedsingle, "'");
        newstr = regex_replace(newstr, re_double, "\\\"");
    } else {
        newstr = regex_replace(newstr, re_single, "\\'");
        newstr = regex_replace(newstr, re_escapeddouble, "\"");
    }

    // switch the beginning and end to the new format
    *newstr.begin() = quote;
    *newstr.rbegin() = quote;

    // undo a transformation that invalidates strings in certain conditions
    if (newstr.at(newstr.size() - 2) == '\\' && newstr.at(newstr.size() - 3) != '\\') {
        newstr.insert(newstr.size() - 2, "\\");
    }

    cur_writer() << newstr;
    return nullptr;
}

// varOrExp nameAndArgs*;
antlrcpp::Any FormatVisitor::visitPrefixexp(LuaParser::PrefixexpContext* ctx) {