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Formatting Library: Implement byte arrays formatting

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Eladash 2021-07-17 11:36:27 +03:00 • committed by Megamouse
parent 1f6ca25820
commit 1e9afdc289
3 changed files with 63 additions and 16 deletions
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32
Utilities/StrFmt.h
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@ -86,7 +86,13 @@ struct fmt_unveil<T*, void>
}
};
template <typename T, usz N>
namespace fmt
{
template <typename T>
concept CharT = (std::is_same_v<const T, const char> || std::is_same_v<const T, const char8_t>);
}
template <fmt::CharT T, usz N>
struct fmt_unveil<T[N], void>
{
using type = std::add_const_t<T>*;
@ -215,6 +221,30 @@ struct fmt_class_string<char8_t*, void> : fmt_class_string<const char8_t*>
{
};
namespace fmt
{
// Both uchar and std::byte are allowed
template <typename T>
concept ByteArray = requires (T& t) { static_cast<const std::conditional_t<std::is_same_v<decltype(std::as_const(t[0])), const std::byte&>, std::byte, uchar>&>(std::data(t)[0]); };
}
template <fmt::ByteArray T>
struct fmt_class_string<T, void>
{
static FORCE_INLINE SAFE_BUFFERS(const T&) get_object(u64 arg)
{
return *reinterpret_cast<const T*>(static_cast<uptr>(arg));
}
static void format(std::string& out, u64 arg)
{
const auto& obj = get_object(arg);
void format_byte_array(std::string&, const uchar*, usz);
format_byte_array(out, reinterpret_cast<const uchar*>(std::data(obj)), std::size(obj));
}
};
struct fmt_type_info
{
decltype(&fmt_class_string<int>::format) fmt_string;