container_gen.cpp

来自「Boost provides free peer-reviewed portab」· C++ 代码 · 共 48 行

//=======================================================================
// Copyright 1997, 1998, 1999, 2000 University of Notre Dame.
// Authors: Andrew Lumsdaine, Lie-Quan Lee, Jeremy G. Siek
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//=======================================================================
#include <boost/graph/adjacency_list.hpp>

#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) && !defined(BOOST_NO_STD_ALLOCATOR)

template <class Allocator>
struct list_with_allocatorS { };

namespace boost {
  template <class Alloc, class ValueType>
  struct container_gen<list_with_allocatorS<Alloc>, ValueType> {
    typedef typename Alloc::template rebind<ValueType>::other Allocator;
    typedef std::list<ValueType, Allocator> type;
  };
  template <class Alloc>
  struct parallel_edge_traits< list_with_allocatorS<Alloc> > { 
    typedef allow_parallel_edge_tag type;
  };

}

// now you can define a graph using std::list and a specific allocator  
typedef boost::adjacency_list< list_with_allocatorS< std::allocator<int> >,
  boost::vecS, boost::directedS> MyGraph;

int main(int, char*[])
{
  MyGraph g(5);
  
  return 0;
}

#else

int main(int, char*[])
{
  return 0;
}

#endif