stl_iterator_base_funcs.h (next, prev): Add in C++0x mode.

2008-06-17  Chris Fairles  <chris.fairles@gmail.com>

	* include/bits/stl_iterator_base_funcs.h (next, prev): Add in
	C++0x mode.
	* testsuite/24_iterators/operations/next.cc: New.
	* testsuite/24_iterators/operations/prev.cc: Likewise.

From-SVN: r136873

4 files changed, 138 insertions, 1 deletions

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index bc9eefa..5b22886 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,10 @@
+2008-06-17  Chris Fairles  <chris.fairles@gmail.com>
+
+	* include/bits/stl_iterator_base_funcs.h (next, prev): Add in
+	C++0x mode.
+	* testsuite/24_iterators/operations/next.cc: New.
+	* testsuite/24_iterators/operations/prev.cc: Likewise.
+
 2008-06-17  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	* src/string_conversions.cc (__to_xstring<>): New.
diff --git a/libstdc++-v3/include/bits/stl_iterator_base_funcs.h b/libstdc++-v3/include/bits/stl_iterator_base_funcs.h
index dbdca22..2be3258 100644
--- a/libstdc++-v3/include/bits/stl_iterator_base_funcs.h
+++ b/libstdc++-v3/include/bits/stl_iterator_base_funcs.h
@@ -1,6 +1,6 @@
 // Functions used by iterators -*- C++ -*-
 
-// Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
+// Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
 // Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
@@ -177,6 +177,26 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
       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
 
 #endif /* _STL_ITERATOR_BASE_FUNCS_H */
diff --git a/libstdc++-v3/testsuite/24_iterators/operations/next.cc b/libstdc++-v3/testsuite/24_iterators/operations/next.cc
new file mode 100644
index 0000000..53bc23d
--- /dev/null
+++ b/libstdc++-v3/testsuite/24_iterators/operations/next.cc
@@ -0,0 +1,55 @@
+// { dg-options "-std=gnu++0x" }
+
+// Copyright (C) 2008 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)
+// any later version.
+
+// 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.
+
+// 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, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+// USA.
+
+// 24.3.4 Iterator operations [iterator.operations]
+
+#include <vector>
+#include <list>
+#include <iterator>
+#include <testsuite_hooks.h>
+
+void test01()
+{
+  bool test __attribute__((unused)) = true;
+  std::vector<int> c(3);
+  std::vector<int>::iterator i = c.begin(), j;
+
+  j = std::next(i, 3);
+  VERIFY( i == c.begin() );
+  VERIFY( j == c.end() );
+}
+
+void test02()
+{
+  bool test __attribute__((unused)) = true;
+  std::list<int> c(3);    
+  std::list<int>::iterator i = c.begin(), j;
+
+  j = std::next(i, 3);
+  VERIFY( i == c.begin() );
+  VERIFY( j == c.end() );
+}
+
+int main()
+{
+  test01();
+  test02();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/24_iterators/operations/prev.cc b/libstdc++-v3/testsuite/24_iterators/operations/prev.cc
new file mode 100644
index 0000000..3cc90cb
--- /dev/null
+++ b/libstdc++-v3/testsuite/24_iterators/operations/prev.cc
@@ -0,0 +1,55 @@
+// { dg-options "-std=gnu++0x" }
+
+// Copyright (C) 2008 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)
+// any later version.
+
+// 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.
+
+// 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, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+// USA.
+
+// 24.3.4 Iterator operations [iterator.operations]
+
+#include <vector>
+#include <list>
+#include <iterator>
+#include <testsuite_hooks.h>
+
+void test01()
+{
+  bool test __attribute__((unused)) = true;
+  std::vector<int> c(3);    
+  std::vector<int>::iterator i = c.end(), j;
+
+  j = std::prev(i, 3);
+  VERIFY( i == c.end() );
+  VERIFY( j == c.begin() );
+}
+
+void test02()
+{
+  bool test __attribute__((unused)) = true;
+  std::list<int> c(3);    
+  std::list<int>::iterator i = c.end(), j;
+
+  j = std::prev(i, 3);
+  VERIFY( i == c.end() );
+  VERIFY( j == c.begin() );
+}
+
+int main()
+{
+  test01();
+  test02();
+  return 0;
+}