graph/example/container_gen.cpp

//=======================================================================
// 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 >
{
#ifdef BOOST_NO_CXX11_ALLOCATOR
    using Allocator = typename Alloc::template rebind< ValueType >::other;
#else
    using Allocator = typename std::allocator_traits<
        Alloc >::template rebind_alloc< ValueType >;
#endif
    using type = std::list< ValueType, Allocator >;
};
template < class Alloc >
struct parallel_edge_traits< list_with_allocatorS< Alloc > >
{
    using type = allow_parallel_edge_tag;
};
}

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

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

    return 0;
}

#else

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

#endif