libstdc++-v3/include/bits/range_access.h

   1 // <range_access.h> -*- C++ -*-
   2
   3 // Copyright (C) 2010 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // Under Section 7 of GPL version 3, you are granted additional
  17 // permissions described in the GCC Runtime Library Exception, version
  18 // 3.1, as published by the Free Software Foundation.
  19
  20 // You should have received a copy of the GNU General Public License and
  21 // a copy of the GCC Runtime Library Exception along with this program;
  22 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  23 // <http://www.gnu.org/licenses/>.
  24
  25 /** @file bits/range_access.h
  26  *  This is an internal header file, included by other library headers.
  27  *  You should not attempt to use it directly.
  28  */
  29
  30 #ifndef _GLIBCXX_RANGE_ACCESS_H
  31 #define _GLIBCXX_RANGE_ACCESS_H 1
  32
  33 #pragma GCC system_header
  34
  35 #ifdef __GXX_EXPERIMENTAL_CXX0X__
  36
  37 _GLIBCXX_BEGIN_NAMESPACE(std)
  38
  39   /**
  40    *  @brief  Return an iterator pointing to the first element of
  41    *          the container.
  42    *  @param  cont  Container.
  43    */
  44   template<class _Container>
  45     inline auto
  46     begin(_Container& __cont) -> decltype(__cont.begin())
  47     { return __cont.begin(); }
  48
  49   /**
  50    *  @brief  Return an iterator pointing to the first element of
  51    *          the const container.
  52    *  @param  cont  Container.
  53    */
  54   template<class _Container>
  55     inline auto
  56     begin(const _Container& __cont) -> decltype(__cont.begin())
  57     { return __cont.begin(); }
  58
  59   /**
  60    *  @brief  Return an iterator pointing to one past the last element of
  61    *          the container.
  62    *  @param  cont  Container.
  63    */
  64   template<class _Container>
  65     inline auto
  66     end(_Container& __cont) -> decltype(__cont.end())
  67     { return __cont.end(); }
  68
  69   /**
  70    *  @brief  Return an iterator pointing to one past the last element of
  71    *          the const container.
  72    *  @param  cont  Container.
  73    */
  74   template<class _Container>
  75     inline auto
  76     end(const _Container& __cont) -> decltype(__cont.end())
  77     { return __cont.end(); }
  78
  79   /**
  80    *  @brief  Return an iterator pointing to the first element of the array.
  81    *  @param  arr  Array.
  82    */
  83   template<class _Tp, size_t _Nm>
  84     inline _Tp*
  85     begin(_Tp (&__arr)[_Nm])
  86     { return __arr; }
  87
  88   /**
  89    *  @brief  Return an iterator pointing to one past the last element
  90    *          of the array.
  91    *  @param  arr  Array.
  92    */
  93   template<class _Tp, size_t _Nm>
  94     inline _Tp*
  95     end(_Tp (&__arr)[_Nm])
  96     { return __arr + _Nm; }
  97
  98 _GLIBCXX_END_NAMESPACE
  99
 100 #endif // __GXX_EXPERIMENTAL_CXX0X__
 101
 102 #endif // _GLIBCXX_RANGE_ACCESS_H