cpp-d1064d

[cross.git] / i686-linux-gnu-4.7 / usr / include / c++ / 4.7 / ext / pb_ds / detail / cc_hash_table_map_ / cond_key_dtor_entry_dealtor.hpp

diff --git a/i686-linux-gnu-4.7/usr/include/c++/4.7/ext/pb_ds/detail/cc_hash_table_map_/cond_key_dtor_entry_dealtor.hpp b/i686-linux-gnu-4.7/usr/include/c++/4.7/ext/pb_ds/detail/cc_hash_table_map_/cond_key_dtor_entry_dealtor.hpp
new file mode 100644 (file)
index 0000000..5b2db9b
--- /dev/null
+++ b/i686-linux-gnu-4.7/usr/include/c++/4.7/ext/pb_ds/detail/cc_hash_table_map_/cond_key_dtor_entry_dealtor.hpp
@@ -0,0 +1,90 @@
+// -*- C++ -*-
+
+// Copyright (C) 2005, 2006, 2009, 2011 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 cc_hash_table_map_/cond_key_dtor_entry_dealtor.hpp
+ * Contains a conditional key destructor, used for exception handling.
+ */
+
+namespace __gnu_pbds
+{
+  namespace detail
+  {
+    /// Conditional dey destructor, cc_hash.
+    template<typename HT_Map>
+    class cond_dealtor
+    {
+    public:
+      typedef typename HT_Map::entry           entry;
+      typedef typename HT_Map::entry_allocator         entry_allocator;
+      typedef typename HT_Map::key_type        key_type;
+
+      cond_dealtor(entry_allocator* p_a, entry* p_e)
+      : m_p_a(p_a), m_p_e(p_e), m_key_destruct(false),
+       m_no_action_destructor(false)
+      { }
+
+      inline
+      ~cond_dealtor();
+
+      void
+      set_key_destruct()
+      { m_key_destruct = true; }
+
+      void
+      set_no_action_destructor()
+      { m_no_action_destructor = true; }
+
+    protected:
+      entry_allocator* const                   m_p_a;
+      entry* const                             m_p_e;
+
+      bool                                     m_key_destruct;
+      bool                                     m_no_action_destructor;
+    };
+
+    template<typename HT_Map>
+    inline
+    cond_dealtor<HT_Map>::
+    ~cond_dealtor()
+    {
+      if (m_no_action_destructor)
+       return;
+      if (m_key_destruct)
+       m_p_e->m_value.first.~key_type();
+      m_p_a->deallocate(m_p_e, 1);
+    }
+  } // namespace detail
+} // namespace __gnu_pbds