namespace boost
{
- // This property map is built specifically for property maps over
- // matrices. Like the basic property map over a container, this builds
- // the property abstraction over a matrix (usually a vector of vectors)
- // and returns property maps over the nested containers.
- template <typename Graph, typename Key, typename Matrix>
- struct matrix_property_map
- : boost::put_get_helper<
- container_property_map<Graph, Key, typename Matrix::value_type>,
- matrix_property_map<Graph, Key, Matrix> >
- {
- // abstract the indexing keys
- typedef typename detail::choose_indexer<Graph, Key>::indexer_type indexer_type;
+// This property map is built specifically for property maps over
+// matrices. Like the basic property map over a container, this builds
+// the property abstraction over a matrix (usually a vector of vectors)
+// and returns property maps over the nested containers.
+template < typename Graph, typename Key, typename Matrix >
+struct matrix_property_map
+: boost::put_get_helper<
+ container_property_map< Graph, Key, typename Matrix::value_type >,
+ matrix_property_map< Graph, Key, Matrix > >
+{
+ // abstract the indexing keys
+ typedef typename detail::choose_indexer< Graph, Key >::indexer_type
+ indexer_type;
- // aliases for the nested container and its corresponding map
- typedef typename Matrix::value_type container_type;
- typedef container_property_map<Graph, Key, container_type> map_type;
+ // aliases for the nested container and its corresponding map
+ typedef typename Matrix::value_type container_type;
+ typedef container_property_map< Graph, Key, container_type > map_type;
- typedef Key key_type;
+ typedef Key key_type;
- // This property map doesn't really provide access to nested containers,
- // but returns property maps over them. Since property maps are all
- // copy-constructible (or should be anyways), we never return references.
- // As such, this property is only readable, but not writable. Curiously,
- // the inner property map is actually an lvalue pmap.
- typedef map_type value_type;
- typedef map_type reference;
- typedef readable_property_map_tag category;
+ // This property map doesn't really provide access to nested containers,
+ // but returns property maps over them. Since property maps are all
+ // copy-constructible (or should be anyways), we never return references.
+ // As such, this property is only readable, but not writable. Curiously,
+ // the inner property map is actually an lvalue pmap.
+ typedef map_type value_type;
+ typedef map_type reference;
+ typedef readable_property_map_tag category;
- matrix_property_map()
- : m_matrix(0), m_graph(0)
- { }
+ matrix_property_map() : m_matrix(0), m_graph(0) {}
- matrix_property_map(Matrix& m, const Graph& g)
- : m_matrix(&m), m_graph(const_cast<Graph*>(&g))
- { }
+ matrix_property_map(Matrix& m, const Graph& g)
+ : m_matrix(&m), m_graph(const_cast< Graph* >(&g))
+ {
+ }
- matrix_property_map(const matrix_property_map& x)
- : m_matrix(x.m_matrix), m_graph(x.m_graph)
- { }
+ matrix_property_map(const matrix_property_map& x)
+ : m_matrix(x.m_matrix), m_graph(x.m_graph)
+ {
+ }
- inline reference operator [](key_type k) const
- {
- typedef typename indexer_type::value_type Index;
- Index x = indexer_type::index(k, *m_graph);
- return map_type((*m_matrix)[x], *m_graph);
- }
+ inline reference operator[](key_type k) const
+ {
+ typedef typename indexer_type::value_type Index;
+ Index x = indexer_type::index(k, *m_graph);
+ return map_type((*m_matrix)[x], *m_graph);
+ }
- private:
- mutable Matrix* m_matrix;
- mutable Graph* m_graph;
- };
+private:
+ mutable Matrix* m_matrix;
+ mutable Graph* m_graph;
+};
}
#endif