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1 : // std::initializer_list support -*- C++ -*-
2 :
3 : // Copyright (C) 2008-2016 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 12 : size() const noexcept { return _M_len; }
72 :
73 : // First element.
74 : constexpr const_iterator
75 13 : begin() const noexcept { return _M_array; }
76 :
77 : // One past the last element.
78 : constexpr const_iterator
79 12 : 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
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