Split iterator_adaptors.hpp in multiple headers.

[SVN r1040]
2003-02-23 21:12:51 +00:00
parent 78a01b30bc
commit 2d6d02dddf
19 changed files with 1315 additions and 1109 deletions
@@ -0,0 +1,70 @@
+// (C) Copyright David Abrahams 2002.
+// (C) Copyright Jeremy Siek    2002.
+// (C) Copyright Thomas Witt    2002.
+// Permission to copy, use, modify,
+// sell and distribute this software is granted provided this
+// copyright notice appears in all copies. This software is provided
+// "as is" without express or implied warranty, and with no claim as
+// to its suitability for any purpose.
+#ifndef BOOST_REVERSE_ITERATOR_23022003THW_HPP
+#define BOOST_REVERSE_ITERATOR_23022003THW_HPP
+
+#include <boost/iterator.hpp>
+#include <boost/utility.hpp>
+#include <boost/iterator/iterator_adaptor.hpp>
+
+namespace boost
+{
+
+  //
+  //
+  //
+  template <class Iterator>
+  class reverse_iterator :
+    public iterator_adaptor< reverse_iterator<Iterator>, Iterator >
+  {
+    typedef iterator_adaptor< reverse_iterator<Iterator>, Iterator > super_t;
+
+    friend class iterator_core_access;
+
+  public:
+    reverse_iterator() {}
+
+    explicit reverse_iterator(Iterator x) 
+      : super_t(x) {}
+
+    template<class OtherIterator>
+    reverse_iterator(
+        reverse_iterator<OtherIterator> const& r
+        , typename enable_if_convertible<OtherIterator, Iterator>::type* = 0
+        )
+      : super_t(r.base()) {}
+
+  private:
+    typename super_t::reference dereference() const { return *boost::prior(this->base()); }
+    
+    void increment() { super_t::decrement(); }
+    void decrement() { super_t::increment(); }
+
+    void advance(typename super_t::difference_type n)
+    {
+      super_t::advance(-n);
+    }
+
+    template <class OtherIterator>
+    typename super_t::difference_type
+    distance_to(reverse_iterator<OtherIterator> const& y) const
+    {
+      return -super_t::distance_to(y);
+    }
+  };
+
+  template <class BidirectionalIterator>
+  reverse_iterator<BidirectionalIterator> make_reverse_iterator(BidirectionalIterator x)
+  {
+      return reverse_iterator<BidirectionalIterator>(x);
+  }
+
+} // namespace boost
+
+#endif // BOOST_REVERSE_ITERATOR_23022003THW_HPP