gcc/libstdc++-v3/include/c_global/cstddef
Tom Honermann c124af936b P0482R5 char8_t: Standard library support
gcc/cp:

2019-02-19  Tom Honermann  <tom@honermann.net>

	* name-lookup.c (get_std_name_hint): Added u8string as a name hint.

libstdc++:

2019-02-19  Tom Honermann  <tom@honermann.net>

	P0482R5 char8_t: Standard library support
	* config/abi/pre/gnu-versioned-namespace.ver (CXXABI_2.0): Add
	typeinfo symbols for char8_t.
	* config/abi/pre/gnu.ver: Add CXXABI_1.3.12.
	(GLIBCXX_3.4.26): Add symbols for specializations of
	numeric_limits and codecvt that involve char8_t.
	(CXXABI_1.3.12): Add typeinfo symbols for char8_t.
	* include/bits/atomic_base.h: Add atomic_char8_t.
	* include/bits/basic_string.h: Add std::hash<u8string> and
	operator""s(const char8_t*, size_t).
	* include/bits/c++config: Define _GLIBCXX_USE_CHAR8_T and
	__cpp_lib_char8_t.
	* include/bits/char_traits.h: Add char_traits<char8_t>.
	* include/bits/codecvt.h: Add
	codecvt<char16_t, char8_t, mbstate_t>,
	codecvt<char32_t, char8_t, mbstate_t>,
	codecvt_byname<char16_t, char8_t, mbstate_t>, and
	codecvt_byname<char32_t, char8_t, mbstate_t>.
	* include/bits/cpp_type_traits.h: Add __is_integer<char8_t> to
	recognize char8_t as an integral type.
	* include/bits/fs_path.h: (path::__is_encoded_char): Recognize
	char8_t.
	(path::u8string): Return std::u8string when char8_t support is
	enabled.
	(path::generic_u8string): Likewise.
	(path::_S_convert): Handle conversion from char8_t input.
	(path::_S_str_convert): Likewise.
	* include/bits/functional_hash.h: Add hash<char8_t>.
	* include/bits/locale_conv.h (__str_codecvt_out): Add overloads for
	char8_t.
	* include/bits/locale_facets.h (_GLIBCXX_NUM_UNICODE_FACETS): Bump
	for new char8_t specializations.
	* include/bits/localefwd.h: Add missing declarations of
	codecvt<char16_t, char, mbstate_t> and
	codecvt<char32_t, char, mbstate_t>.  Add char8_t declarations
	codecvt<char16_t, char8_t, mbstate_t> and
	codecvt<char32_t, char8_t, mbstate_t>.
	* include/bits/postypes.h: Add u8streampos
	* include/bits/stringfwd.h: Add declarations of
	char_traits<char8_t> and u8string.
	* include/c_global/cstddef: Add __byte_operand<char8_t>.
	* include/experimental/bits/fs_path.h (path::__is_encoded_char):
	Recognize char8_t.
	(path::u8string): Return std::u8string when char8_t support is
	enabled.
	(path::generic_u8string): Likewise.
	(path::_S_convert): Handle conversion from char8_t input.
	(path::_S_str_convert): Likewise.
	* include/experimental/string: Add u8string.
	* include/experimental/string_view: Add u8string_view,
	hash<experimental::u8string_view>, and
	operator""sv(const char8_t*, size_t).
	* include/std/atomic: Add atomic<char8_t> and atomic_char8_t.
	* include/std/charconv (__is_int_to_chars_type): Recognize char8_t
	as a character type.
	* include/std/limits: Add numeric_limits<char8_t>.
	* include/std/string_view: Add u8string_view,
	hash<experimental::u8string_view>, and
	operator""sv(const char8_t*, size_t).
	* include/std/type_traits: Add __is_integral_helper<char8_t>,
	__make_unsigned<char8_t>, and __make_signed<char8_t>.
	* libsupc++/atomic_lockfree_defines.h: Define
	ATOMIC_CHAR8_T_LOCK_FREE.
	* src/c++11/Makefile.am: Compile with -fchar8_t when compiling
	codecvt.cc and limits.cc so that char8_t specializations of
	numeric_limits and codecvt and emitted.
	* src/c++11/Makefile.in: Likewise.
	* src/c++11/codecvt.cc: Define members of
	codecvt<char16_t, char8_t, mbstate_t>,
	codecvt<char32_t, char8_t, mbstate_t>,
	codecvt_byname<char16_t, char8_t, mbstate_t>, and
	codecvt_byname<char32_t, char8_t, mbstate_t>.
	* src/c++11/limits.cc: Define members of
	numeric_limits<char8_t>.
	* src/c++98/Makefile.am: Compile with -fchar8_t when compiling
	locale_init.cc and localename.cc.
	* src/c++98/Makefile.in: Likewise.
	* src/c++98/locale_init.cc: Add initialization for the
	codecvt<char16_t, char8_t, mbstate_t> and
	codecvt<char32_t, char8_t, mbstate_t> facets.
	* src/c++98/localename.cc: Likewise.
	* testsuite/util/testsuite_abi.cc: Validate ABI bump.

From-SVN: r269004
2019-02-19 02:54:42 +00:00

200 lines
6.5 KiB
C++

// -*- C++ -*- forwarding header.
// Copyright (C) 1997-2019 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.
// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
// <http://www.gnu.org/licenses/>.
/** @file cstddef
* This is a Standard C++ Library file. You should @c \#include this file
* in your programs, rather than any of the @a *.h implementation files.
*
* This is the C++ version of the Standard C Library header @c stddef.h,
* and its contents are (mostly) the same as that header, but are all
* contained in the namespace @c std (except for names which are defined
* as macros in C).
*/
//
// ISO C++ 14882: 18.1 Types
//
#ifndef _GLIBCXX_CSTDDEF
#define _GLIBCXX_CSTDDEF 1
#pragma GCC system_header
#undef __need_wchar_t
#undef __need_ptrdiff_t
#undef __need_size_t
#undef __need_NULL
#undef __need_wint_t
#include <bits/c++config.h>
#include <stddef.h>
extern "C++"
{
#if __cplusplus >= 201103L
namespace std
{
// We handle size_t, ptrdiff_t, and nullptr_t in c++config.h.
using ::max_align_t;
}
#endif // C++11
#if __cplusplus >= 201703L
namespace std
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
#define __cpp_lib_byte 201603
/// std::byte
enum class byte : unsigned char {};
template<typename _IntegerType> struct __byte_operand { };
template<> struct __byte_operand<bool> { using __type = byte; };
template<> struct __byte_operand<char> { using __type = byte; };
template<> struct __byte_operand<signed char> { using __type = byte; };
template<> struct __byte_operand<unsigned char> { using __type = byte; };
#ifdef _GLIBCXX_USE_WCHAR_T
template<> struct __byte_operand<wchar_t> { using __type = byte; };
#endif
#ifdef _GLIBCXX_USE_CHAR8_T
template<> struct __byte_operand<char8_t> { using __type = byte; };
#endif
template<> struct __byte_operand<char16_t> { using __type = byte; };
template<> struct __byte_operand<char32_t> { using __type = byte; };
template<> struct __byte_operand<short> { using __type = byte; };
template<> struct __byte_operand<unsigned short> { using __type = byte; };
template<> struct __byte_operand<int> { using __type = byte; };
template<> struct __byte_operand<unsigned int> { using __type = byte; };
template<> struct __byte_operand<long> { using __type = byte; };
template<> struct __byte_operand<unsigned long> { using __type = byte; };
template<> struct __byte_operand<long long> { using __type = byte; };
template<> struct __byte_operand<unsigned long long> { using __type = byte; };
#if defined(__GLIBCXX_TYPE_INT_N_0)
template<> struct __byte_operand<__GLIBCXX_TYPE_INT_N_0>
{ using __type = byte; };
template<> struct __byte_operand<unsigned __GLIBCXX_TYPE_INT_N_0>
{ using __type = byte; };
#endif
#if defined(__GLIBCXX_TYPE_INT_N_1)
template<> struct __byte_operand<__GLIBCXX_TYPE_INT_N_1>
{ using __type = byte; };
template<> struct __byte_operand<unsigned __GLIBCXX_TYPE_INT_N_1>
{ using __type = byte; };
#endif
#if defined(__GLIBCXX_TYPE_INT_N_2)
template<> struct __byte_operand<__GLIBCXX_TYPE_INT_N_2>
{ using __type = byte; };
template<> struct __byte_operand<unsigned __GLIBCXX_TYPE_INT_N_2>
{ using __type = byte; };
#endif
template<typename _IntegerType>
struct __byte_operand<const _IntegerType>
: __byte_operand<_IntegerType> { };
template<typename _IntegerType>
struct __byte_operand<volatile _IntegerType>
: __byte_operand<_IntegerType> { };
template<typename _IntegerType>
struct __byte_operand<const volatile _IntegerType>
: __byte_operand<_IntegerType> { };
template<typename _IntegerType>
using __byte_op_t = typename __byte_operand<_IntegerType>::__type;
template<typename _IntegerType>
constexpr __byte_op_t<_IntegerType>&
operator<<=(byte& __b, _IntegerType __shift) noexcept
{ return __b = byte(static_cast<unsigned char>(__b) << __shift); }
template<typename _IntegerType>
constexpr __byte_op_t<_IntegerType>
operator<<(byte __b, _IntegerType __shift) noexcept
{ return byte(static_cast<unsigned char>(__b) << __shift); }
template<typename _IntegerType>
constexpr __byte_op_t<_IntegerType>&
operator>>=(byte& __b, _IntegerType __shift) noexcept
{ return __b = byte(static_cast<unsigned char>(__b) >> __shift); }
template<typename _IntegerType>
constexpr __byte_op_t<_IntegerType>
operator>>(byte __b, _IntegerType __shift) noexcept
{ return byte(static_cast<unsigned char>(__b) >> __shift); }
constexpr byte&
operator|=(byte& __l, byte __r) noexcept
{
return __l =
byte(static_cast<unsigned char>(__l) | static_cast<unsigned char>(__r));
}
constexpr byte
operator|(byte __l, byte __r) noexcept
{
return
byte(static_cast<unsigned char>(__l) | static_cast<unsigned char>(__r));
}
constexpr byte&
operator&=(byte& __l, byte __r) noexcept
{
return __l =
byte(static_cast<unsigned char>(__l) & static_cast<unsigned char>(__r));
}
constexpr byte
operator&(byte __l, byte __r) noexcept
{
return
byte(static_cast<unsigned char>(__l) & static_cast<unsigned char>(__r));
}
constexpr byte&
operator^=(byte& __l, byte __r) noexcept
{
return __l =
byte(static_cast<unsigned char>(__l) ^ static_cast<unsigned char>(__r));
}
constexpr byte
operator^(byte __l, byte __r) noexcept
{
return
byte(static_cast<unsigned char>(__l) ^ static_cast<unsigned char>(__r));
}
constexpr byte
operator~(byte __b) noexcept
{ return byte(~static_cast<unsigned char>(__b)); }
template<typename _IntegerType>
constexpr _IntegerType
to_integer(__byte_op_t<_IntegerType> __b) noexcept
{ return _IntegerType(__b); }
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace std
#endif // C++17
} // extern "C++"
#endif // _GLIBCXX_CSTDDEF