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| 1 |  |  |  |  |  |  | // std::initializer_list support -*- C++ -*- | 
| 2 |  |  |  |  |  |  |  | 
| 3 |  |  |  |  |  |  | // Copyright (C) 2008-2015 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 |  |  |  |  |  |  | // . | 
| 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 | 
| 37 |  |  |  |  |  |  | #else // C++0x | 
| 38 |  |  |  |  |  |  |  | 
| 39 |  |  |  |  |  |  | #pragma GCC visibility push(default) | 
| 40 |  |  |  |  |  |  |  | 
| 41 |  |  |  |  |  |  | #include | 
| 42 |  |  |  |  |  |  |  | 
| 43 |  |  |  |  |  |  | namespace std | 
| 44 |  |  |  |  |  |  | { | 
| 45 |  |  |  |  |  |  | /// initializer_list | 
| 46 |  |  |  |  |  |  | template | 
| 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 | 0 |  |  |  |  |  | size() const noexcept { return _M_len; } | 
| 72 |  |  |  |  |  |  |  | 
| 73 |  |  |  |  |  |  | // First element. | 
| 74 |  |  |  |  |  |  | constexpr const_iterator | 
| 75 | 0 |  |  |  |  |  | begin() const noexcept { return _M_array; } | 
| 76 |  |  |  |  |  |  |  | 
| 77 |  |  |  |  |  |  | // One past the last element. | 
| 78 |  |  |  |  |  |  | constexpr const_iterator | 
| 79 | 0 |  |  |  |  |  | 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 | 
| 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 | 
| 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 |