From c5ba516e61ffad976c86a4e8ceb64cac37579029 Mon Sep 17 00:00:00 2001
From: Jeremy Siek <jeremy.siek@gmail.com>
Date: Sat, 27 Jan 2001 21:20:49 +0000
Subject: [PATCH] new file

[SVN r8792]
---
 include/boost/graph/graph_selectors.hpp | 27 +++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 include/boost/graph/graph_selectors.hpp

diff --git a/include/boost/graph/graph_selectors.hpp b/include/boost/graph/graph_selectors.hpp
new file mode 100644
index 00000000..8a3cb065
--- /dev/null
+++ b/include/boost/graph/graph_selectors.hpp
@@ -0,0 +1,27 @@
+#ifndef BOOST_GRAPH_SELECTORS_HPP
+#define BOOST_GRAPH_SELECTORS_HPP
+
+namespace boost {
+
+  //===========================================================================
+  // Selectors for the Directed template parameter of adjacency_list
+  // and adjacency_matrix.
+
+  struct directedS { enum { is_directed = true, is_bidir = false }; 
+    typedef true_type is_directed_t; 
+    typedef false_type is_bidir_t;
+  };
+  struct undirectedS { 
+    enum { is_directed = false, is_bidir = false }; 
+    typedef false_type is_directed_t;
+    typedef false_type is_bidir_t;
+  };
+  struct bidirectionalS { 
+    enum { is_directed = true, is_bidir = true }; 
+    typedef true_type is_directed_t;
+    typedef true_type is_bidir_t;
+  };
+
+} // namespace boost
+
+#endif // BOOST_GRAPH_SELECTORS_HPP