QList: add {const_,reverse_iterator}, {c,}r{begin,end}()

[ChangeLog][QtCore][QList] Added rbegin(), crbegin(), rend(), crend(),
and reverse_iterator and const_reverse_iterator typedefs.

Task-number: QTBUG-25919
Change-Id: Icce870c22931e68cdcedd1519651bfa374ac44af
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/src/corelib/tools/qlist.h b/src/corelib/tools/qlist.h
index 7d90f72876..31c9c36e3d 100644
--- a/src/corelib/tools/qlist.h
+++ b/src/corelib/tools/qlist.h
@@ -291,6 +291,8 @@ public:
     friend class const_iterator;
 
     // stl style
+    typedef std::reverse_iterator<iterator> reverse_iterator;
+    typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
     inline iterator begin() { detach(); return reinterpret_cast<Node *>(p.begin()); }
     inline const_iterator begin() const { return reinterpret_cast<Node *>(p.begin()); }
     inline const_iterator cbegin() const { return reinterpret_cast<Node *>(p.begin()); }
@@ -299,6 +301,12 @@ public:
     inline const_iterator end() const { return reinterpret_cast<Node *>(p.end()); }
     inline const_iterator cend() const { return reinterpret_cast<Node *>(p.end()); }
     inline const_iterator constEnd() const { return reinterpret_cast<Node *>(p.end()); }
+    reverse_iterator rbegin() { return reverse_iterator(end()); }
+    reverse_iterator rend() { return reverse_iterator(begin()); }
+    const_reverse_iterator rbegin() const { return const_reverse_iterator(end()); }
+    const_reverse_iterator rend() const { return const_reverse_iterator(begin()); }
+    const_reverse_iterator crbegin() const { return const_reverse_iterator(end()); }
+    const_reverse_iterator crend() const { return const_reverse_iterator(begin()); }
     iterator insert(iterator before, const T &t);
     iterator erase(iterator pos);
     iterator erase(iterator first, iterator last);