| 1 |
// std::initializer_list support -*- C++ -*- |
| 2 |
|
| 3 |
// Copyright (C) 2008-2021 Free Software Foundation, Inc. |
| 4 |
// |
| 5 |
// This file is part of GCC. |
| 6 |
// |
| 7 |
// GCC is free software; you can redistribute it and/or modify |
| 8 |
// it under the terms of the GNU General Public License as published by |
| 9 |
// the Free Software Foundation; either version 3, or (at your option) |
| 10 |
// any later version. |
| 11 |
// |
| 12 |
// GCC is distributed in the hope that it will be useful, |
| 13 |
// but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 |
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 |
// GNU General Public License for more details. |
| 16 |
// |
| 17 |
// Under Section 7 of GPL version 3, you are granted additional |
| 18 |
// permissions described in the GCC Runtime Library Exception, version |
| 19 |
// 3.1, as published by the Free Software Foundation. |
| 20 |
|
| 21 |
// You should have received a copy of the GNU General Public License and |
| 22 |
// a copy of the GCC Runtime Library Exception along with this program; |
| 23 |
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
| 24 |
// <http://www.gnu.org/licenses/>. |
| 25 |
|
| 26 |
/** @file initializer_list |
| 27 |
* This is a Standard C++ Library header. |
| 28 |
*/ |
| 29 |
|
| 30 |
#ifndef _INITIALIZER_LIST |
| 31 |
#define _INITIALIZER_LIST |
| 32 |
|
| 33 |
#pragma GCC system_header |
| 34 |
|
| 35 |
#if __cplusplus < 201103L |
| 36 |
# include <bits/c++0x_warning.h> |
| 37 |
#else // C++0x |
| 38 |
|
| 39 |
#pragma GCC visibility push(default) |
| 40 |
|
| 41 |
#include <bits/c++config.h> |
| 42 |
|
| 43 |
namespace std |
| 44 |
{ |
| 45 |
/// initializer_list |
| 46 |
template<class _E> |
| 47 |
class initializer_list |
| 48 |
{ |
| 49 |
public: |
| 50 |
typedef _E value_type; |
| 51 |
typedef const _E& reference; |
| 52 |
typedef const _E& const_reference; |
| 53 |
typedef size_t size_type; |
| 54 |
typedef const _E* iterator; |
| 55 |
typedef const _E* const_iterator; |
| 56 |
|
| 57 |
private: |
| 58 |
iterator _M_array; |
| 59 |
size_type _M_len; |
| 60 |
|
| 61 |
// The compiler can call a private constructor. |
| 62 |
constexpr initializer_list(const_iterator __a, size_type __l) |
| 63 |
: _M_array(__a), _M_len(__l) { } |
| 64 |
|
| 65 |
public: |
| 66 |
constexpr initializer_list() noexcept |
| 67 |
: _M_array(0), _M_len(0) { } |
| 68 |
|
| 69 |
// Number of elements. |
| 70 |
constexpr size_type |
| 71 |
size() const noexcept { return _M_len; } |
| 72 |
|
| 73 |
// First element. |
| 74 |
constexpr const_iterator |
| 75 |
begin() const noexcept { return _M_array; } |
| 76 |
|
| 77 |
// One past the last element. |
| 78 |
constexpr const_iterator |
| 79 |
end() const noexcept { return begin() + size(); } |
| 80 |
}; |
| 81 |
|
| 82 |
/** |
| 83 |
* @brief Return an iterator pointing to the first element of |
| 84 |
* the initializer_list. |
| 85 |
* @param __ils Initializer list. |
| 86 |
* @relates initializer_list |
| 87 |
*/ |
| 88 |
template<class _Tp> |
| 89 |
constexpr const _Tp* |
| 90 |
begin(initializer_list<_Tp> __ils) noexcept |
| 91 |
{ return __ils.begin(); } |
| 92 |
|
| 93 |
/** |
| 94 |
* @brief Return an iterator pointing to one past the last element |
| 95 |
* of the initializer_list. |
| 96 |
* @param __ils Initializer list. |
| 97 |
* @relates initializer_list |
| 98 |
*/ |
| 99 |
template<class _Tp> |
| 100 |
constexpr const _Tp* |
| 101 |
end(initializer_list<_Tp> __ils) noexcept |
| 102 |
{ return __ils.end(); } |
| 103 |
} |
| 104 |
|
| 105 |
#pragma GCC visibility pop |
| 106 |
|
| 107 |
#endif // C++11 |
| 108 |
|
| 109 |
#endif // _INITIALIZER_LIST |
