Function parse_regex

less_slow.cpp:4570–4593

}

void parse_regex(bm::State &state, std::string_view config_text) {
    std::size_t pairs = 0, bytes = 0;
    std::vector<std::pair<std::string, std::string>> settings;

    // Prefer multiline mode so ^ and $ anchor to line breaks...
    auto regex_options = std::regex_constants::ECMAScript;
    // ... but MSVC does not define `std::regex_constants::multiline` yet!
#if !defined(_MSC_VER)
    regex_options |= std::regex_constants::multiline;
#endif
    // Construct the regex only once. Compilation is expensive!
    // BTW, there is still no `std::string_view` constructor 🤦‍♂️
    std::regex regex_fsm(regex_for_config.data(), regex_for_config.size(), regex_options);

    for (auto _ : state) {
        settings.clear();
        config_parse_regex(config_text, settings, regex_fsm);
        bm::DoNotOptimize(settings);
        pairs += settings.size();
        bytes += config_text.size();
    }
    state.SetBytesProcessed(bytes);
    state.counters["pairs/s"] = bm::Counter(pairs, bm::Counter::kIsRate);
}

BENCHMARK_CAPTURE(parse_regex, short_, short_config_text)->MinTime(2);
BENCHMARK_CAPTURE(parse_regex, long_, long_config_text)->MinTime(2);