fmtlib/fmt
1
0
Fork 1
mirror of https://github.com/fmtlib/fmt.git synced 2025-06-24 17:01:42 +02:00
Code Issues Packages Projects Releases Wiki Activity

Add xchar support for std::byte formatter (#4480)

Browse Source 
Signed-off-by: Vladislav Shchapov <vladislav@shchapov.ru>
This commit is contained in:
Vladislav Shchapov
2025-06-24 02:02:11 +05:00
committed by GitHub
parent f4345467fc
commit 571c02d475
2 changed files with 10 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
include/fmt/format.h
View File

@ -3904,13 +3904,14 @@ constexpr auto format_as(Enum e) noexcept -> underlying_t<Enum> {
} // namespace enums } // namespace enums
#ifdef __cpp_lib_byte #ifdef __cpp_lib_byte
template <> struct formatter<std::byte> : formatter<unsigned> { template <typename Char>
struct formatter<std::byte, Char> : formatter<unsigned, Char> {
static auto format_as(std::byte b) -> unsigned char { static auto format_as(std::byte b) -> unsigned char {
return static_cast<unsigned char>(b); return static_cast<unsigned char>(b);
} }
template <typename Context> template <typename Context>
auto format(std::byte b, Context& ctx) const -> decltype(ctx.out()) { auto format(std::byte b, Context& ctx) const -> decltype(ctx.out()) {
return formatter<unsigned>::format(format_as(b), ctx); return formatter<unsigned, Char>::format(format_as(b), ctx);
} }
}; };
#endif #endif

7
test/xchar-test.cc
View File

@ -171,6 +171,13 @@ TEST(xchar_test, join) {
EXPECT_EQ(fmt::format(L"({})", fmt::join(t, L", ")), L"(a, 1, 2)"); EXPECT_EQ(fmt::format(L"({})", fmt::join(t, L", ")), L"(a, 1, 2)");
} }
#ifdef __cpp_lib_byte
TEST(xchar_test, join_bytes) {
auto v = std::vector<std::byte>{std::byte(1), std::byte(2), std::byte(3)};
EXPECT_EQ(fmt::format(L"{}", fmt::join(v, L", ")), L"1, 2, 3");
}
#endif
enum streamable_enum {}; enum streamable_enum {};
std::wostream& operator<<(std::wostream& os, streamable_enum) { std::wostream& operator<<(std::wostream& os, streamable_enum) {