Imported gcc-4.4.3

[msp430-gcc.git] / libstdc++-v3 / include / ext / pb_ds / detail / tree_policy / node_metadata_selector.hpp

diff --git a/libstdc++-v3/include/ext/pb_ds/detail/tree_policy/node_metadata_selector.hpp b/libstdc++-v3/include/ext/pb_ds/detail/tree_policy/node_metadata_selector.hpp
new file mode 100644 (file)
index 0000000..c182886
--- /dev/null
+++ b/libstdc++-v3/include/ext/pb_ds/detail/tree_policy/node_metadata_selector.hpp
@@ -0,0 +1,116 @@
+// -*- C++ -*-
+
+// Copyright (C) 2005, 2006, 2009 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 3, 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.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
+
+// Permission to use, copy, modify, sell, and distribute this software
+// is hereby granted without fee, provided that the above copyright
+// notice appears in all copies, and that both that copyright notice
+// and this permission notice appear in supporting documentation. None
+// of the above authors, nor IBM Haifa Research Laboratories, make any
+// representation about the suitability of this software for any
+// purpose. It is provided "as is" without express or implied
+// warranty.
+
+/**
+ * @file node_metadata_selector.hpp
+ * Contains an implementation class for trees.
+ */
+
+#ifndef PB_DS_TREE_NODE_METADATA_SELECTOR_HPP
+#define PB_DS_TREE_NODE_METADATA_SELECTOR_HPP
+
+#include <ext/pb_ds/detail/basic_tree_policy/null_node_metadata.hpp>
+#include <ext/pb_ds/detail/types_traits.hpp>
+
+namespace __gnu_pbds
+{
+  namespace detail
+  {
+
+    template<typename Node_Update, bool Null>
+    struct tree_metadata_helper
+    {
+      typedef typename Node_Update::metadata_type type;
+    };
+
+    template<typename Node_Update>
+    struct tree_metadata_helper<
+      Node_Update,
+      true>
+    {
+      typedef null_node_metadata type;
+    };
+
+    template<typename Key,
+            typename Data,
+            class Cmp_Fn,
+            template<typename Const_Node_Iterator,
+                     class Const_Iterator,
+                     class Cmp_Fn_,
+                     class Allocator_>
+    class Node_Update,
+            class Allocator>
+    struct tree_node_metadata_selector
+    {
+    private:
+      typedef
+      dumconst_node_iterator<
+      Key,
+      Data,
+      Allocator>
+      dumconst_node_it;
+
+      enum
+       {
+         null_update =
+         is_same<
+         Node_Update<
+         dumconst_node_it,
+         dumconst_node_it,
+         Cmp_Fn,
+         Allocator>,
+         null_tree_node_update<
+         dumconst_node_it,
+         dumconst_node_it,
+         Cmp_Fn,
+         Allocator> >::value
+       };
+
+    public:
+      typedef
+      typename tree_metadata_helper<
+      Node_Update<
+      dumconst_node_it,
+      dumconst_node_it,
+      Cmp_Fn,
+      Allocator>,
+      null_update>::type
+      type;
+    };
+
+  } // namespace detail
+} // namespace __gnu_pbds
+
+#endif // #ifndef PB_DS_TREE_NODE_METADATA_SELECTOR_HPP