Committed current version of visitor refactoring

1 files changed, 26 insertions, 0 deletions

diff --git a/src/traverser.h b/src/traverser.h
new file mode 100644
index 0000000..80913e3
--- /dev/null
+++ b/src/traverser.h
@@ -0,0 +1,26 @@
+#ifndef TRAVERSER_H_
+#define TRAVERSER_H_
+
+enum Response {ContinueTraversal, AbortTraversal, PruneTraversal};
+
+class Traverser
+{
+public:
+  enum TraversalType {PREFIX, POSTFIX, PRE_AND_POSTFIX};
+
+  Traverser(class Visitor &visitor, const class AbstractNode &root, TraversalType travtype)
+		: visitor(visitor), root(root), traversaltype(travtype) {
+  }
+  virtual ~Traverser() { }
+  
+  void execute();
+private:
+  // FIXME: reverse parameters
+  void traverse(const class State &state, const AbstractNode &node);
+
+  Visitor &visitor;
+  const AbstractNode &root;
+  TraversalType traversaltype;
+};
+
+#endif