1 files changed, 119 insertions, 0 deletions
diff --git a/cpp/src/qpid/framing/Frame.cpp b/cpp/src/qpid/framing/Frame.cpp
new file mode 100644
index 0000000000..7bdc0adf00
--- /dev/null
+++ b/cpp/src/qpid/framing/Frame.cpp
@@ -0,0 +1,119 @@
+/*
+ *
+ * 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 <boost/format.hpp>
+
+#include "Frame.h"
+#include "qpid/QpidError.h"
+#include "AMQRequestBody.h"
+#include "AMQResponseBody.h"
+
+
+namespace qpid {
+namespace framing {
+
+namespace {
+struct GetBodyVisitor : public NoBlankVisitor<AMQBody*> {
+    QPID_USING_NOBLANK(AMQBody*);
+    AMQBody* operator()(MethodHolder& h) const { return h.getMethod(); }
+    template <class T> AMQBody* operator()(T& t) const { return &t; }
+};
+}
+
+AMQBody* Frame::getBody() {
+    return boost::apply_visitor(GetBodyVisitor(), body);
+}
+
+const AMQBody* Frame::getBody() const {
+    return boost::apply_visitor(GetBodyVisitor(), const_cast<Variant&>(body));
+}
+
+void Frame::encode(Buffer& buffer)
+{
+    buffer.putOctet(getBody()->type());
+    buffer.putShort(channel);    
+    buffer.putLong(getBody()->size());
+    getBody()->encode(buffer);
+    buffer.putOctet(0xCE);
+}
+
+uint32_t Frame::size() const{
+    return 1/*type*/ + 2/*channel*/ + 4/*body size*/ + getBody()->size()
+        + 1/*0xCE*/;
+}
+
+bool Frame::decode(Buffer& buffer)
+{    
+    if(buffer.available() < 7)
+        return false;
+    buffer.record();
+    uint32_t frameSize = decodeHead(buffer);
+    if(buffer.available() < frameSize + 1){
+        buffer.restore();
+        return false;
+    }
+    decodeBody(buffer, frameSize);
+    uint8_t end = buffer.getOctet();
+    if(end != 0xCE) THROW_QPID_ERROR(FRAMING_ERROR, "Frame end not found");
+    return true;
+}
+
+uint32_t Frame::decodeHead(Buffer& buffer){    
+    type = buffer.getOctet();
+    channel = buffer.getShort();
+    return buffer.getLong();
+}
+
+void Frame::decodeBody(Buffer& buffer, uint32_t size)
+{    
+    switch(type)
+    {
+      case METHOD_BODY:
+      case REQUEST_BODY:
+      case RESPONSE_BODY: {
+        ClassId c=buffer.getShort();
+        MethodId m=buffer.getShort();
+        body = MethodHolder(c,m);
+        break;
+      }
+      case HEADER_BODY: 
+	body = AMQHeaderBody();
+	break;
+      case CONTENT_BODY: 
+	body = AMQContentBody();
+	break;
+      case HEARTBEAT_BODY: 
+	body = AMQHeartbeatBody();
+	break;
+      default:
+	THROW_QPID_ERROR(
+            FRAMING_ERROR,
+            boost::format("Unknown frame type %d") % type);
+    }
+    getBody()->decode(buffer, size);
+}
+
+std::ostream& operator<<(std::ostream& out, const Frame& f)
+{
+    return out << "Frame[channel=" << f.getChannel() << "; " << f.body << "]";
+}
+
+
+}} // namespace qpid::framing