Function TEST_SUBMODULE

tests/test_builtin_casters.cpp:75–393

PYBIND11_NAMESPACE_END(pybind11)

TEST_SUBMODULE(builtin_casters, m) {
    PYBIND11_WARNING_PUSH
    PYBIND11_WARNING_DISABLE_MSVC(4127)

    // test_simple_string
    m.def("string_roundtrip", [](const char *s) { return s; });

    // test_unicode_conversion
    // Some test characters in utf16 and utf32 encodings.  The last one (the 𝐀) contains a null
    // byte
    char32_t a32 = 0x61 /*a*/, z32 = 0x7a /*z*/, ib32 = 0x203d /*‽*/, cake32 = 0x1f382 /*🎂*/,
             mathbfA32 = 0x1d400 /*𝐀*/;
    char16_t b16 = 0x62 /*b*/, z16 = 0x7a, ib16 = 0x203d, cake16_1 = 0xd83c, cake16_2 = 0xdf82,
             mathbfA16_1 = 0xd835, mathbfA16_2 = 0xdc00;
    std::wstring wstr;
    wstr.push_back(0x61);   // a
    wstr.push_back(0x2e18); // ⸘
    if (sizeof(wchar_t) == 2) {
        wstr.push_back(mathbfA16_1);
        wstr.push_back(mathbfA16_2);
    } // 𝐀, utf16
    else {
        wstr.push_back((wchar_t) mathbfA32);
    } // 𝐀, utf32
    wstr.push_back(0x7a); // z

    m.def("good_utf8_string", []() {
        return std::string((const char *) u8"Say utf8\u203d \U0001f382 \U0001d400");
    }); // Say utf8‽ 🎂 𝐀
    m.def("good_utf16_string", [=]() {
        return std::u16string({b16, ib16, cake16_1, cake16_2, mathbfA16_1, mathbfA16_2, z16});
    }); // b‽🎂𝐀z
    m.def("good_utf32_string",
          [=]() { return std::u32string({a32, mathbfA32, cake32, ib32, z32}); }); // a𝐀🎂‽z
    m.def("good_wchar_string", [=]() { return wstr; });                           // a‽𝐀z
    m.def("bad_utf8_string", []() {
        return std::string("abc\xd0"
                           "def");
    });
    m.def("bad_utf16_string", [=]() { return std::u16string({b16, char16_t(0xd800), z16}); });
    // Under Python 2.7, invalid unicode UTF-32 characters didn't appear to trigger
    // UnicodeDecodeError
    m.def("bad_utf32_string", [=]() { return std::u32string({a32, char32_t(0xd800), z32}); });
    if (sizeof(wchar_t) == 2) {
        m.def("bad_wchar_string",
              [=]() { return std::wstring({wchar_t(0x61), wchar_t(0xd800)}); });
    }
    m.def("u8_Z", []() -> char { return 'Z'; });
    m.def("u8_eacute", []() -> char { return '\xe9'; });
    m.def("u16_ibang", [=]() -> char16_t { return ib16; });
    m.def("u32_mathbfA", [=]() -> char32_t { return mathbfA32; });
    m.def("wchar_heart", []() -> wchar_t { return 0x2665; });

    // test_single_char_arguments
    m.attr("wchar_size") = py::cast(sizeof(wchar_t));
    m.def("ord_char", [](char c) -> int { return static_cast<unsigned char>(c); });
    m.def("ord_char_lv", [](char &c) -> int { return static_cast<unsigned char>(c); });
    m.def("ord_char16", [](char16_t c) -> uint16_t { return c; });