Add reverse iteration support to path

1 files changed, 7 insertions, 0 deletions

diff --git a/butl/path b/butl/path
index 62cadad..db77563 100644
--- a/butl/path
+++ b/butl/path
@@ -236,6 +236,7 @@ namespace butl
     typedef path_traits<C> traits;
 
     struct iterator;
+    typedef std::reverse_iterator<iterator> reverse_iterator;
 
     // Construct special empty path. Note that we have to provide our
     // own implementation rather than using '=default' to make clang
@@ -263,6 +264,9 @@ namespace butl
     //
     basic_path (const iterator& begin, const iterator& end);
 
+    basic_path (const reverse_iterator& rbegin, const reverse_iterator& rend)
+        : basic_path (end.base (), begin.base ()) {}
+
     void
     swap (basic_path& p)
     {
@@ -436,6 +440,9 @@ namespace butl
     iterator begin () const;
     iterator end () const;
 
+    reverse_iterator rbegin () const {return reverse_iterator (end ());}
+    reverse_iterator rend () const {return reverse_iterator (begin ());}
+
   public:
     // Normalize the path. This includes collapsing the '.' and '..'
     // directories if possible, collapsing multiple directory