// Functions used by iterators -*- C++ -*-
-// Copyright (C) 2001, 2002 Free Software Foundation, Inc.
+// Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
+// 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 2, or (at your option)
+// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
-// You should have received a copy of the GNU General Public License along
-// with this library; see the file COPYING. If not, write to the Free
-// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
-// USA.
+// 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.
-// As a special exception, you may use this file as part of a free software
-// library without restriction. Specifically, if other files instantiate
-// templates or use macros or inline functions from this file, or you compile
-// this file and link it with other files to produce an executable, this
-// file does not by itself cause the resulting executable to be covered by
-// the GNU General Public License. This exception does not however
-// invalidate any other reasons why the executable file might be covered by
-// the GNU General Public License.
+// 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/>.
/*
*
* functions, such as distance() and advance().
*/
-#ifndef __GLIBCPP_INTERNAL_ITERATOR_BASE_FUNCS_H
-#define __GLIBCPP_INTERNAL_ITERATOR_BASE_FUNCS_H
+#ifndef _STL_ITERATOR_BASE_FUNCS_H
+#define _STL_ITERATOR_BASE_FUNCS_H 1
#pragma GCC system_header
#include <bits/concept_check.h>
-// Since this entire file is within namespace std, there's no reason to
-// waste two spaces along the left column. Thus the leading indentation is
-// slightly violated from here on.
-namespace std
-{
-template<typename _InputIterator>
- inline typename iterator_traits<_InputIterator>::difference_type
- __distance(_InputIterator __first, _InputIterator __last, input_iterator_tag)
- {
- // concept requirements
- __glibcpp_function_requires(_InputIteratorConcept<_InputIterator>)
-
- typename iterator_traits<_InputIterator>::difference_type __n = 0;
- while (__first != __last) {
- ++__first; ++__n;
+_GLIBCXX_BEGIN_NAMESPACE(std)
+
+ template<typename _InputIterator>
+ inline typename iterator_traits<_InputIterator>::difference_type
+ __distance(_InputIterator __first, _InputIterator __last,
+ input_iterator_tag)
+ {
+ // concept requirements
+ __glibcxx_function_requires(_InputIteratorConcept<_InputIterator>)
+
+ typename iterator_traits<_InputIterator>::difference_type __n = 0;
+ while (__first != __last)
+ {
+ ++__first;
+ ++__n;
+ }
+ return __n;
+ }
+
+ template<typename _RandomAccessIterator>
+ inline typename iterator_traits<_RandomAccessIterator>::difference_type
+ __distance(_RandomAccessIterator __first, _RandomAccessIterator __last,
+ random_access_iterator_tag)
+ {
+ // concept requirements
+ __glibcxx_function_requires(_RandomAccessIteratorConcept<
+ _RandomAccessIterator>)
+ return __last - __first;
+ }
+
+ /**
+ * @brief A generalization of pointer arithmetic.
+ * @param first An input iterator.
+ * @param last An input iterator.
+ * @return The distance between them.
+ *
+ * Returns @c n such that first + n == last. This requires that @p last
+ * must be reachable from @p first. Note that @c n may be negative.
+ *
+ * For random access iterators, this uses their @c + and @c - operations
+ * and are constant time. For other %iterator classes they are linear time.
+ */
+ template<typename _InputIterator>
+ inline typename iterator_traits<_InputIterator>::difference_type
+ distance(_InputIterator __first, _InputIterator __last)
+ {
+ // concept requirements -- taken care of in __distance
+ return std::__distance(__first, __last,
+ std::__iterator_category(__first));
+ }
+
+ template<typename _InputIterator, typename _Distance>
+ inline void
+ __advance(_InputIterator& __i, _Distance __n, input_iterator_tag)
+ {
+ // concept requirements
+ __glibcxx_function_requires(_InputIteratorConcept<_InputIterator>)
+ while (__n--)
+ ++__i;
}
- return __n;
- }
-
-template<typename _RandomAccessIterator>
- inline typename iterator_traits<_RandomAccessIterator>::difference_type
- __distance(_RandomAccessIterator __first, _RandomAccessIterator __last,
- random_access_iterator_tag)
- {
- // concept requirements
- __glibcpp_function_requires(_RandomAccessIteratorConcept<_RandomAccessIterator>)
- return __last - __first;
- }
-
-/**
- * @brief A generalization of pointer arithmetic.
- * @param first An input iterator.
- * @param last An input iterator.
- * @return The distance between them.
- *
- * Returns @c n such that first + n == last. This requires that @p last
- * must be reachable from @p first. Note that @c n may be negative.
- *
- * For random access iterators, this uses their @c + and @c - operations
- * and are constant time. For other %iterator classes they are linear time.
-*/
-template<typename _InputIterator>
- inline typename iterator_traits<_InputIterator>::difference_type
- distance(_InputIterator __first, _InputIterator __last)
- {
- // concept requirements -- taken care of in __distance
- return __distance(__first, __last, __iterator_category(__first));
- }
-
-template<typename _InputIter, typename _Distance>
- inline void
- __advance(_InputIter& __i, _Distance __n, input_iterator_tag)
- {
- // concept requirements
- __glibcpp_function_requires(_InputIteratorConcept<_InputIter>)
- while (__n--) ++__i;
- }
-
-template<typename _BidirectionalIterator, typename _Distance>
- inline void
- __advance(_BidirectionalIterator& __i, _Distance __n,
- bidirectional_iterator_tag)
- {
- // concept requirements
- __glibcpp_function_requires(_BidirectionalIteratorConcept<_BidirectionalIterator>)
-
- if (__n > 0)
- while (__n--) ++__i;
- else
- while (__n++) --__i;
- }
-
-template<typename _RandomAccessIterator, typename _Distance>
- inline void
- __advance(_RandomAccessIterator& __i, _Distance __n,
- random_access_iterator_tag)
- {
- // concept requirements
- __glibcpp_function_requires(_RandomAccessIteratorConcept<_RandomAccessIterator>)
- __i += __n;
- }
-
-/**
- * @brief A generalization of pointer arithmetic.
- * @param i An input iterator.
- * @param n The "delta" by which to change @p i.
- * @return Nothing.
- *
- * This increments @p i by @p n. For bidirectional and random access
- * iterators, @p n may be negative, in which case @p i is decremented.
- *
- * For random access iterators, this uses their @c + and @c - operations
- * and are constant time. For other %iterator classes they are linear time.
-*/
-template<typename _InputIterator, typename _Distance>
- inline void
- advance(_InputIterator& __i, _Distance __n)
- {
- // concept requirements -- taken care of in __advance
- __advance(__i, __n, __iterator_category(__i));
- }
-} // namespace std
+ template<typename _BidirectionalIterator, typename _Distance>
+ inline void
+ __advance(_BidirectionalIterator& __i, _Distance __n,
+ bidirectional_iterator_tag)
+ {
+ // concept requirements
+ __glibcxx_function_requires(_BidirectionalIteratorConcept<
+ _BidirectionalIterator>)
+ if (__n > 0)
+ while (__n--)
+ ++__i;
+ else
+ while (__n++)
+ --__i;
+ }
-#endif /* __GLIBCPP_INTERNAL_ITERATOR_BASE_FUNCS_H */
+ template<typename _RandomAccessIterator, typename _Distance>
+ inline void
+ __advance(_RandomAccessIterator& __i, _Distance __n,
+ random_access_iterator_tag)
+ {
+ // concept requirements
+ __glibcxx_function_requires(_RandomAccessIteratorConcept<
+ _RandomAccessIterator>)
+ __i += __n;
+ }
+
+ /**
+ * @brief A generalization of pointer arithmetic.
+ * @param i An input iterator.
+ * @param n The "delta" by which to change @p i.
+ * @return Nothing.
+ *
+ * This increments @p i by @p n. For bidirectional and random access
+ * iterators, @p n may be negative, in which case @p i is decremented.
+ *
+ * For random access iterators, this uses their @c + and @c - operations
+ * and are constant time. For other %iterator classes they are linear time.
+ */
+ template<typename _InputIterator, typename _Distance>
+ inline void
+ advance(_InputIterator& __i, _Distance __n)
+ {
+ // concept requirements -- taken care of in __advance
+ typename iterator_traits<_InputIterator>::difference_type __d = __n;
+ std::__advance(__i, __d, std::__iterator_category(__i));
+ }
+
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ template<typename _InputIterator>
+ inline _InputIterator
+ next(_InputIterator __x, typename
+ iterator_traits<_InputIterator>::difference_type __n = 1)
+ {
+ std::advance(__x, __n);
+ return __x;
+ }
+
+ template<typename _BidirectionalIterator>
+ inline _BidirectionalIterator
+ prev(_BidirectionalIterator __x, typename
+ iterator_traits<_BidirectionalIterator>::difference_type __n = 1)
+ {
+ std::advance(__x, -__n);
+ return __x;
+ }
+#endif
+_GLIBCXX_END_NAMESPACE
-// Local Variables:
-// mode:C++
-// End:
+#endif /* _STL_ITERATOR_BASE_FUNCS_H */
projects / msp430-gcc.git / blobdiff