1// std::initializer_list support -*- C++ -*-
2
3// Copyright (C) 2008-2018 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
43namespace 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   */
87  template<class _Tp>
88    constexpr const _Tp*
89    begin(initializer_list<_Tp> __ils) noexcept
90    { return __ils.begin(); }
91
92  /**
93   *  @brief  Return an iterator pointing to one past the last element
94   *          of the initializer_list.
95   *  @param  __ils  Initializer list.
96   */
97  template<class _Tp>
98    constexpr const _Tp*
99    end(initializer_list<_Tp> __ils) noexcept
100    { return __ils.end(); }
101}
102
103#pragma GCC visibility pop
104
105#endif // C++11
106
107#endif // _INITIALIZER_LIST
108