0,0 → 1,116 |
// HP/SGI iterator extensions -*- C++ -*- |
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// Copyright (C) 2001-2013 Free Software Foundation, Inc. |
// |
// This file is part of the GNU ISO C++ Library. This library is free |
// software; you can redistribute it and/or modify it under the |
// terms of the GNU General Public License as published by the |
// Free Software Foundation; either version 3, or (at your option) |
// any later version. |
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// This library is distributed in the hope that it will be useful, |
// but WITHOUT ANY WARRANTY; without even the implied warranty of |
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
// GNU General Public License for more details. |
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// Under Section 7 of GPL version 3, you are granted additional |
// permissions described in the GCC Runtime Library Exception, version |
// 3.1, as published by the Free Software Foundation. |
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// You should have received a copy of the GNU General Public License and |
// a copy of the GCC Runtime Library Exception along with this program; |
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
// <http://www.gnu.org/licenses/>. |
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/* |
* |
* Copyright (c) 1994 |
* Hewlett-Packard Company |
* |
* Permission to use, copy, modify, distribute and sell this software |
* and its documentation for any purpose is hereby granted without fee, |
* provided that the above copyright notice appear in all copies and |
* that both that copyright notice and this permission notice appear |
* in supporting documentation. Hewlett-Packard Company makes no |
* representations about the suitability of this software for any |
* purpose. It is provided "as is" without express or implied warranty. |
* |
* |
* Copyright (c) 1996-1998 |
* Silicon Graphics Computer Systems, Inc. |
* |
* Permission to use, copy, modify, distribute and sell this software |
* and its documentation for any purpose is hereby granted without fee, |
* provided that the above copyright notice appear in all copies and |
* that both that copyright notice and this permission notice appear |
* in supporting documentation. Silicon Graphics makes no |
* representations about the suitability of this software for any |
* purpose. It is provided "as is" without express or implied warranty. |
*/ |
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/** @file ext/iterator |
* This file is a GNU extension to the Standard C++ Library (possibly |
* containing extensions from the HP/SGI STL subset). |
*/ |
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#ifndef _EXT_ITERATOR |
#define _EXT_ITERATOR 1 |
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#pragma GCC system_header |
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#include <bits/concept_check.h> |
#include <iterator> |
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namespace __gnu_cxx _GLIBCXX_VISIBILITY(default) |
{ |
_GLIBCXX_BEGIN_NAMESPACE_VERSION |
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// There are two signatures for distance. In addition to the one |
// taking two iterators and returning a result, there is another |
// taking two iterators and a reference-to-result variable, and |
// returning nothing. The latter seems to be an SGI extension. |
// -- pedwards |
template<typename _InputIterator, typename _Distance> |
inline void |
__distance(_InputIterator __first, _InputIterator __last, |
_Distance& __n, std::input_iterator_tag) |
{ |
// concept requirements |
__glibcxx_function_requires(_InputIteratorConcept<_InputIterator>) |
while (__first != __last) |
{ |
++__first; |
++__n; |
} |
} |
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template<typename _RandomAccessIterator, typename _Distance> |
inline void |
__distance(_RandomAccessIterator __first, _RandomAccessIterator __last, |
_Distance& __n, std::random_access_iterator_tag) |
{ |
// concept requirements |
__glibcxx_function_requires(_RandomAccessIteratorConcept< |
_RandomAccessIterator>) |
__n += __last - __first; |
} |
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/** |
* This is an SGI extension. |
* @ingroup SGIextensions |
* @doctodo |
*/ |
template<typename _InputIterator, typename _Distance> |
inline void |
distance(_InputIterator __first, _InputIterator __last, |
_Distance& __n) |
{ |
// concept requirements -- taken care of in __distance |
__distance(__first, __last, __n, std::__iterator_category(__first)); |
} |
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_GLIBCXX_END_NAMESPACE_VERSION |
} // namespace |
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#endif |
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