[libc++] [C++20] [P0482] Add missing tests and synopses for char8_t.
Left to finish P0482:
* <cuchar> header.
* Parts of <memory_resource> concerning char8_t. Also, tests for hash<pmr::*string>.
Reviewed By: ldionne, #libc, Quuxplusone
Differential Revision: https://reviews.llvm.org/D99184
GitOrigin-RevId: 28f82bec7fa1bbe99ece9149adb3563041914d86
diff --git a/include/string_view b/include/string_view
index f8c6357..6af1611 100644
--- a/include/string_view
+++ b/include/string_view
@@ -48,6 +48,7 @@
// basic_string_view typedef names
typedef basic_string_view<char> string_view;
+ typedef basic_string_view<char8_t> u8string_view; // C++20
typedef basic_string_view<char16_t> u16string_view;
typedef basic_string_view<char32_t> u32string_view;
typedef basic_string_view<wchar_t> wstring_view;
@@ -161,12 +162,14 @@
// 7.11, Hash support
template <class T> struct hash;
template <> struct hash<string_view>;
+ template <> struct hash<u8string_view>; // C++20
template <> struct hash<u16string_view>;
template <> struct hash<u32string_view>;
template <> struct hash<wstring_view>;
constexpr basic_string_view<char> operator "" sv( const char *str, size_t len ) noexcept;
constexpr basic_string_view<wchar_t> operator "" sv( const wchar_t *str, size_t len ) noexcept;
+ constexpr basic_string_view<char8_t> operator "" sv( const char8_t *str, size_t len ) noexcept; // C++20
constexpr basic_string_view<char16_t> operator "" sv( const char16_t *str, size_t len ) noexcept;
constexpr basic_string_view<char32_t> operator "" sv( const char32_t *str, size_t len ) noexcept;