Allow simple nodes to have outgoing edges

[oota-llvm.git] / include / Support / DOTGraphTraits.h

diff --git a/include/Support/DOTGraphTraits.h b/include/Support/DOTGraphTraits.h
index ca7c463f1c715c1b975e06fb43cdd73440f0ec77..42f9af24c6160423e752e124a207f2d370b346ea 100644 (file)
--- a/include/Support/DOTGraphTraits.h
+++ b/include/Support/DOTGraphTraits.h
@@ -60,6 +60,15 @@ struct DefaultDOTGraphTraits {
   /// edge.
   template<typename EdgeIter>
   static EdgeIter getEdgeTarget(void *Node, EdgeIter I) { return I; }
+
+  /// addCustomGraphFeatures - If a graph is made up of more than just
+  /// straight-forward nodes and edges, this is the place to put all of the
+  /// custom stuff neccesary.  The GraphWriter object, instantiated with your
+  /// GraphType is passed in as an argument.  You may call arbitrary methods on
+  /// it to add things to the output graph.
+  ///
+  template<typename GraphWriter>
+  static void addCustomGraphFeatures(void *Graph, GraphWriter &GW) {}
 };