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libcxx/include/initializer_list

118 lines
2.8 KiB
C++

// -*- C++ -*-
//===----------------------- initializer_list -----------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP_INITIALIZER_LIST
#define _LIBCPP_INITIALIZER_LIST
/*
initializer_list synopsis
namespace std
{
template<class E>
class initializer_list
{
public:
typedef E value_type;
typedef const E& reference;
typedef const E& const_reference;
typedef size_t size_type;
typedef const E* iterator;
typedef const E* const_iterator;
initializer_list() noexcept; // constexpr in C++14
size_t size() const noexcept; // constexpr in C++14
const E* begin() const noexcept; // constexpr in C++14
const E* end() const noexcept; // constexpr in C++14
};
template<class E> const E* begin(initializer_list<E> il) noexcept; // constexpr in C++14
template<class E> const E* end(initializer_list<E> il) noexcept; // constexpr in C++14
} // std
*/
#include <__config>
#include <cstddef>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
namespace std // purposefully not versioned
{
#ifndef _LIBCPP_CXX03_LANG
template<class _Ep>
class _LIBCPP_TEMPLATE_VIS initializer_list
{
const _Ep* __begin_;
size_t __size_;
_LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR_AFTER_CXX11
initializer_list(const _Ep* __b, size_t __s) _NOEXCEPT
: __begin_(__b),
__size_(__s)
{}
public:
typedef _Ep value_type;
typedef const _Ep& reference;
typedef const _Ep& const_reference;
typedef size_t size_type;
typedef const _Ep* iterator;
typedef const _Ep* const_iterator;
_LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR_AFTER_CXX11
initializer_list() _NOEXCEPT : __begin_(nullptr), __size_(0) {}
_LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR_AFTER_CXX11
size_t size() const _NOEXCEPT {return __size_;}
_LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR_AFTER_CXX11
const _Ep* begin() const _NOEXCEPT {return __begin_;}
_LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR_AFTER_CXX11
const _Ep* end() const _NOEXCEPT {return __begin_ + __size_;}
};
template<class _Ep>
inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR_AFTER_CXX11
const _Ep*
begin(initializer_list<_Ep> __il) _NOEXCEPT
{
return __il.begin();
}
template<class _Ep>
inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR_AFTER_CXX11
const _Ep*
end(initializer_list<_Ep> __il) _NOEXCEPT
{
return __il.end();
}
#endif // !defined(_LIBCPP_CXX03_LANG)
} // std
#endif // _LIBCPP_INITIALIZER_LIST