boost/ptr_container/detail/meta_functions.hpp

   1 //
   2 // Boost.Pointer Container
   3 //
   4 //  Copyright Thorsten Ottosen 2008. Use, modification and
   5 //  distribution is subject to the Boost Software License, Version
   6 //  1.0. (See accompanying file LICENSE_1_0.txt or copy at
   7 //  http://www.boost.org/LICENSE_1_0.txt)
   8 //
   9 // For more information, see http://www.boost.org/libs/ptr_container/
  10 //
  11
  12 #ifndef BOOST_PTR_CONTAINER_DETAIL_META_FUNCTIONS
  13 #define BOOST_PTR_CONTAINER_DETAIL_META_FUNCTIONS
  14
  15 #include <boost/mpl/identity.hpp>
  16 #include <boost/mpl/eval_if.hpp>
  17
  18 namespace boost
  19 {
  20 namespace ptr_container_detail
  21 {
  22     template< class T >
  23     struct select_value_compare
  24     {
  25         typedef typename T::value_compare type;
  26     };
  27
  28     template< class T >
  29     struct select_key_compare
  30     {
  31         typedef typename T::key_compare type;
  32     };
  33
  34     template< class T >
  35     struct select_hasher
  36     {
  37         typedef typename T::hasher type;
  38     };
  39
  40     template< class T >
  41     struct select_key_equal
  42     {
  43         typedef typename T::key_equal type;
  44     };
  45
  46     template< class T >
  47     struct select_iterator
  48     {
  49         typedef typename T::iterator type;
  50     };
  51
  52     template< class T >
  53     struct select_local_iterator
  54     {
  55         typedef typename T::local_iterator type;
  56     };
  57
  58     template< class T >
  59     struct select_const_local_iterator
  60     {
  61         typedef typename T::const_local_iterator type;
  62     };
  63 }
  64 }
  65
  66 #endif