mingw/lib/gcc/mingw32/4.3.3/include/c++/ext/pb_ds/detail/binary_heap_/entry_cmp.hpp

   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_cmp.hpp
  44  * Contains an implementation class for a binary_heap.
  45  */
  46
  47 #ifndef PB_DS_BINARY_HEAP_ENTRY_CMP_HPP
  48 #define PB_DS_BINARY_HEAP_ENTRY_CMP_HPP
  49
  50 namespace __gnu_pbds
  51 {
  52   namespace detail
  53   {
  54
  55     template<typename Value_Type,
  56              class Cmp_Fn,
  57              bool No_Throw,
  58              class Allocator>
  59     struct entry_cmp
  60     {
  61       typedef Cmp_Fn type;
  62     };
  63
  64     template<typename Value_Type, class Cmp_Fn, class Allocator>
  65     struct entry_cmp<
  66       Value_Type,
  67       Cmp_Fn,
  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 Cmp_Fn
  78       {
  79       public:
  80         inline
  81         type()
  82         { }
  83
  84         inline
  85         type(const Cmp_Fn& other) : Cmp_Fn(other)
  86         { }
  87
  88         inline bool
  89         operator()(entry p_lhs,  entry p_rhs) const
  90         {
  91           return Cmp_Fn::operator()(*p_lhs, * p_rhs);
  92         }
  93       };
  94     };
  95
  96   } // namespace detail
  97 } // namespace __gnu_pbds
  98
  99 #endif // #ifndef PB_DS_BINARY_HEAP_ENTRY_CMP_HPP