libstdc++-v3/libsupc++/initializer_list

   1 // std::initializer_list support -*- C++ -*-
   2
   3 // Copyright (C) 2008 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 2, 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 // You should have received a copy of the GNU General Public License
  18 // along with GCC; see the file COPYING.  If not, write to
  19 // the Free Software Foundation, 51 Franklin Street, Fifth Floor,
  20 // Boston, MA 02110-1301, USA.
  21
  22 // As a special exception, you may use this file as part of a free software
  23 // library without restriction.  Specifically, if other files instantiate
  24 // templates or use macros or inline functions from this file, or you compile
  25 // this file and link it with other files to produce an executable, this
  26 // file does not by itself cause the resulting executable to be covered by
  27 // the GNU General Public License.  This exception does not however
  28 // invalidate any other reasons why the executable file might be covered by
  29 // the GNU General Public License.
  30
  31 #ifndef __CXX_INITIALIZER_LIST
  32 #define __CXX_INITIALIZER_LIST
  33
  34 #pragma GCC visibility push(default)
  35
  36 #include <cstddef>
  37
  38 namespace std
  39 {
  40   template<class E>
  41   class initializer_list
  42   {
  43     const E* _array;
  44     size_t _len;
  45
  46     // The compiler can call a private constructor.
  47     initializer_list(const E* _a, size_t _l)
  48       : _array(_a), _len(_l) { }
  49
  50   public:
  51     initializer_list()
  52       : _array(NULL), _len(0) {}
  53
  54     size_t size() const         // number of elements
  55     { return _len; }
  56     const E* begin() const      // first element
  57     { return _array; }
  58     const E* end() const        // one past the last element
  59     { return begin() + size(); }
  60   };
  61 }
  62
  63 #pragma GCC visibility pop
  64 #endif // __CXX_INITIALIZER_LIST