old-autovect-branch/libstdc++-v3/include/ext/pb_assoc/detail/value_type_adapter/erase_if_pred.hpp

   1 // -*- C++ -*-
   2
   3 // Copyright (C) 2005 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
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 2, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING.  If not, write to the Free
  18 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  19 // USA.
  20
  21 // As a special exception, you may use this file as part of a free software
  22 // library without restriction.  Specifically, if other files instantiate
  23 // templates or use macros or inline functions from this file, or you compile
  24 // this file and link it with other files to produce an executable, this
  25 // file does not by itself cause the resulting executable to be covered by
  26 // the GNU General Public License.  This exception does not however
  27 // invalidate any other reasons why the executable file might be covered by
  28 // the GNU General Public License.
  29
  30 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
  31
  32 // Permission to use, copy, modify, sell, and distribute this software
  33 // is hereby granted without fee, provided that the above copyright
  34 // notice appears in all copies, and that both that copyright notice and
  35 // this permission notice appear in supporting documentation. None of
  36 // the above authors, nor IBM Haifa Research Laboratories, make any
  37 // representation about the suitability of this software for any
  38 // purpose. It is provided "as is" without express or implied warranty.
  39
  40 /**
  41  * @file erase_if_pred.hpp
  42  * Contains a bridge erase_if predicate
  43  */
  44
  45 template<class Pred>
  46 class erase_if_pred
  47 {
  48 public:
  49   // Tmp Ami all erase-ifs should take a reference to a predicate?
  50   erase_if_pred(Pred& r_pred, typename my_base::iterator base_it) : m_r_pred(r_pred),
  51                                                                     m_base_it(base_it)
  52   { }
  53
  54   inline bool
  55   operator()(typename my_base_data_type::iterator::reference r_val)
  56   {
  57     it_value_type_traits_t::make_valid(m_value_type_holder, m_base_it->first, r_val);
  58
  59     typename it_value_type_traits_t::pointer p_exp_val =
  60       it_value_type_traits_t::recast(m_value_type_holder);
  61
  62     return (m_r_pred(*p_exp_val));
  63   }
  64
  65 private:
  66   Pred& m_r_pred;
  67
  68   typename my_base::iterator m_base_it;
  69
  70   typename it_value_type_traits_t::value_type_holder m_value_type_holder;
  71 };
  72