Function main

test/transform_replace.cpp:363–781

}

int main()
{

// detail_attr_search_repack_shim
{
    using namespace bp::literals;

    {
        std::string str = "";
        auto parser = bp::string("XYZ");

        // Follows body of attr_search_impl() that constructs a custom parser
        // from the given one.
        auto first = bp::detail::text::detail::begin(str);
        auto const last = bp::detail::text::detail::end(str);
        auto match_first = first;
        auto match_last = first;
        auto before = [&match_first](auto & ctx) {
            match_first = _where(ctx).begin();
        };
        auto after = [&match_last](auto & ctx) {
            match_last = _where(ctx).begin();
        };
        auto const search_parser =
            bp::omit[*(bp::char_ - parser)] >>
            -bp::lexeme[bp::eps[before] >> bp::skip[parser] >> bp::eps[after]];

        auto result = bp::prefix_parse(
            first, last, search_parser, bp::ws, bp::trace::off);
        static_assert(std::is_same_v<
                      decltype(result),
                      std::optional<std::optional<std::string>>>);
        static_assert(std::is_same_v<
                      decltype(bp::prefix_parse(
                          first, last, search_parser, bp::ws, bp::trace::off)),
                      std::optional<std::optional<std::string>>>);
    }
    {
        std::string str = "";
        auto parser = bp::string("XYZ");
        bp::detail::attr_search_impl(str, parser, bp::ws, bp::trace::off);
    }
    {
        std::string str = "";
        auto result = bp::detail::attr_search_repack_shim(
            str, bp::string("XYZ"), bp::ws, bp::trace::off);
        auto subrng = bp::get(result, 0_c);
        BOOST_TEST(subrng.begin() == std::begin(str));
        BOOST_TEST(subrng.end() == std::begin(str));
        auto result_str = bp::get(result, 1_c);
        BOOST_TEST(result_str == "");
    }
    {
        char const str[] = "not here";
        auto result = bp::detail::attr_search_repack_shim(
            str, bp::string("XYZ"), bp::ws, bp::trace::off);
        auto subrng = bp::get(result, 0_c);
        BOOST_TEST(subrng.begin() == std::end(str));