Made filter_iterator bidirectional.

[SVN r1288]
2003-05-29 17:11:11 +00:00
parent 8da33f502f
commit 0bada0a914
2 changed files with 13 additions and 10 deletions
@@ -23,7 +23,7 @@ namespace boost
       typedef iterator_tag<
           typename access_category<Iterator>::type
         , typename minimum_category<
-               forward_traversal_tag
+               bidirectional_traversal_tag
             , typename traversal_category<Iterator>::type
           >::type 
       > type;
@@ -80,6 +80,11 @@ namespace boost
          satisfy_predicate();
      }

+      void decrement()
+      {
+        while(!this->m_predicate(*--(this->base_reference()))){};
+      }
+
      void satisfy_predicate()
      {
          while (this->base() != this->m_end && !this->m_predicate(*this->base()))