* src/qpid/framing/FrameDefaultVisitor.h:

	Visitor for all concrete frame body types.
	Override to handle specific bodies (methods or header/content)
	and provide default handling for others.

	* rubygen/MethodBodyDefaultVisitor.rb:
	Visitor for MethodBodies with visit functions that call
	virtual defaultVisit(). Override to handle specific methods
	and give default behavior for others.


git-svn-id: https://svn.apache.org/repos/asf/incubator/qpid/trunk/qpid@570121 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 56 insertions, 0 deletions

diff --git a/cpp/src/qpid/framing/FrameDefaultVisitor.h b/cpp/src/qpid/framing/FrameDefaultVisitor.h
new file mode 100644
index 0000000000..84606b90e7
--- /dev/null
+++ b/cpp/src/qpid/framing/FrameDefaultVisitor.h
@@ -0,0 +1,56 @@
+#ifndef QPID_FRAMING_FRAMEVISITOR_H
+#define QPID_FRAMING_FRAMEVISITOR_H
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ *
+ */
+
+#include "qpid/framing/MethodBodyDefaultVisitor.h"
+#include "qpid/framing/AMQBody.h"
+
+namespace qpid {
+namespace framing {
+
+class AMQMethodBody;
+class AMQHeaderBody;
+class AMQContentBody;
+class AMQHeartbeatBody;
+
+/**
+ * Functor to handle a frame by visiting its content.
+ * Combines AMQBodyConstVisitor and MethodBodyDefaultVisitor.
+ * 
+ * Derived classes may override visit methods to specify actions.
+ * Derived classes must override defaultVisit(), which is called
+ * for any non-overridden visit functions.
+ *
+ */
+struct FrameDefaultVisitor : public AMQBodyConstVisitor, public MethodBodyDefaultVisitor
+{
+    void visit(const AMQHeaderBody& x) { defaultVisit(); }
+    void visit(const AMQContentBody& x) { defaultVisit(); }
+    void visit(const AMQHeartbeatBody& x) { defaultVisit(); }
+    void visit(const AMQMethodBody& method) { method.accept(*this); }
+};
+
+
+
+
+
+#endif  /*!QPID_FRAMING_FRAMEVISITOR_H*/