libstdc++-v3/libsupc++/initializer_list

   1 // std::initializer_list support -*- C++ -*-
   2
   3 // Copyright (C) 2008, 2009 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 #ifdef __GXX_EXPERIMENTAL_CXX0X__
  34
  35 #pragma GCC visibility push(default)
  36
  37 #include <cstddef>
  38
  39 namespace std
  40 {
  41   /// initializer_list
  42   template<class _E>
  43     class initializer_list
  44     {
  45     public:
  46       typedef _E                value_type;
  47       typedef const _E&         reference;
  48       typedef const _E&         const_reference;
  49       typedef size_t            size_type;
  50       typedef const _E*         iterator;
  51       typedef const _E*         const_iterator;
  52
  53     private:
  54       iterator                  _M_array;
  55       size_type                 _M_len;
  56
  57       // The compiler can call a private constructor.
  58       initializer_list(const_iterator __a, size_type __l)
  59       : _M_array(__a), _M_len(__l) { }
  60
  61     public:
  62       initializer_list() : _M_array(NULL), _M_len(0) { }
  63
  64       // Number of elements.
  65       size_type
  66       size() const { return _M_len; }
  67
  68       // First element.
  69       const_iterator
  70       begin() const { return _M_array; }
  71
  72       // One past the last element.
  73       const_iterator
  74       end() const { return begin() + size(); }
  75   };
  76 }
  77
  78 #pragma GCC visibility pop
  79 #endif // C++0x
  80 #endif // _INITIALIZER_LIST