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properties.hpp:

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- Use is_convertible inside is_vertex_bundle. We lose some checking in
    pathological cases, but it's not worth the effort.


[SVN r23172]
This commit is contained in:
Douglas Gregor
2004-06-23 20:55:31 +00:00
parent 9613d2dd8c
commit 9d467c8df1
1 changed files with 2 additions and 14 deletions
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16
include/boost/graph/properties.hpp
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@@ -30,7 +30,7 @@
#include <boost/pending/property.hpp>
#include <boost/property_map.hpp>
#include <boost/graph/graph_traits.hpp>
#include <boost/type_traits/detail/yes_no_type.hpp>
#include <boost/type_traits/is_convertible.hpp>
namespace boost {
@@ -334,8 +334,6 @@ namespace boost {
#if defined (BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
# define BOOST_GRAPH_NO_BUNDLED_PROPERTIES
#elif BOOST_WORKAROUND(__EDG_VERSION__, <= 238)
# define BOOST_GRAPH_NO_BUNDLED_PROPERTIES
#endif
#ifndef BOOST_GRAPH_NO_BUNDLED_PROPERTIES
@@ -357,18 +355,8 @@ namespace boost {
};
namespace detail {
template<typename VertexBundle, typename EdgeBundle>
type_traits::yes_type is_vertex_bundle_helper(VertexBundle*);
template<typename VertexBundle, typename EdgeBundle>
type_traits::no_type is_vertex_bundle_helper(EdgeBundle*);
template<typename VertexBundle, typename EdgeBundle, typename Bundle>
struct is_vertex_bundle
{
BOOST_STATIC_CONSTANT(bool, value = ((sizeof(is_vertex_bundle_helper<VertexBundle, EdgeBundle>((Bundle*)0))
== sizeof(type_traits::yes_type))));
};
struct is_vertex_bundle : is_convertible<Bundle*, VertexBundle*> {};
}
template <typename Graph, typename T, typename Bundle>