1// -*- C++ -*-
2
3// Copyright (C) 2005, 2006 Free Software Foundation, Inc.
4//
5// This file is part of the GNU ISO C++ Library.  This library is free
6// software; you can redistribute it and/or modify it under the terms
7// of the GNU General Public License as published by the Free Software
8// Foundation; either version 2, or (at your option) any later
9// version.
10
11// This library is distributed in the hope that it will be useful, but
12// WITHOUT ANY WARRANTY; without even the implied warranty of
13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14// General Public License for more details.
15
16// You should have received a copy of the GNU General Public License
17// along with this library; see the file COPYING.  If not, write to
18// the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
19// MA 02111-1307, USA.
20
21// As a special exception, you may use this file as part of a free
22// software library without restriction.  Specifically, if other files
23// instantiate templates or use macros or inline functions from this
24// file, or you compile this file and link it with other files to
25// produce an executable, this file does not by itself cause the
26// resulting executable to be covered by the GNU General Public
27// License.  This exception does not however invalidate any other
28// reasons why the executable file might be covered by the GNU General
29// Public License.
30
31// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
32
33// Permission to use, copy, modify, sell, and distribute this software
34// is hereby granted without fee, provided that the above copyright
35// notice appears in all copies, and that both that copyright notice
36// and this permission notice appear in supporting documentation. None
37// of the above authors, nor IBM Haifa Research Laboratories, make any
38// representation about the suitability of this software for any
39// purpose. It is provided "as is" without express or implied
40// warranty.
41
42/**
43 * @file entry_pred.hpp
44 * Contains an implementation class for a binary_heap.
45 */
46
47#ifndef PB_DS_BINARY_HEAP_ENTRY_PRED_HPP
48#define PB_DS_BINARY_HEAP_ENTRY_PRED_HPP
49
50namespace pb_ds
51{
52  namespace detail
53  {
54
55    template<typename Value_Type,
56	     class Pred,
57	     bool No_Throw,
58	     class Allocator>
59    struct entry_pred
60    {
61      typedef Pred type;
62    };
63
64    template<typename Value_Type, class Pred, class Allocator>
65    struct entry_pred<
66      Value_Type,
67      Pred,
68      false,
69      Allocator>
70    {
71    public:
72      typedef
73      typename Allocator::template rebind<
74      Value_Type>::other::const_pointer
75      entry;
76
77      struct type : public Pred
78      {
79      public:
80	inline
81	type()
82	{ }
83
84	inline
85	type(const Pred& other) : Pred(other)
86	{ }
87
88	inline bool
89	operator()(entry p_v) const
90	{
91	  return Pred::operator()(*p_v);
92	}
93      };
94    };
95
96  } // namespace detail
97} // namespace pb_ds
98
99#endif // #ifndef PB_DS_BINARY_HEAP_ENTRY_PRED_HPP
100