1 files changed, 65 insertions, 0 deletions
diff --git a/qpid/cpp/src/qpid/amqp_0_10/Unit.cpp b/qpid/cpp/src/qpid/amqp_0_10/Unit.cpp
new file mode 100644
index 0000000000..381de76dcc
--- /dev/null
+++ b/qpid/cpp/src/qpid/amqp_0_10/Unit.cpp
@@ -0,0 +1,65 @@
+/*
+ *
+ * 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/amqp_0_10/Unit.h"
+#include "qpid/amqp_0_10/Codec.h"
+
+namespace qpid {
+namespace amqp_0_10 {
+
+void Unit::updateVariant() {
+    switch (header.getType()) {
+      case CONTROL: variant=ControlHolder(); break;
+      case COMMAND: variant=CommandHolder(); break;
+      case HEADER: variant=Header(); break;
+      case BODY: variant=Body(header.getDataSize()); break;
+      default: assert(0);       // FIXME aconway 2008-04-14: exception?
+    }
+}
+
+struct GetTypeVisitor : public boost::static_visitor<SegmentType> {
+    SegmentType operator()(const CommandHolder& ) const { return COMMAND; }
+    SegmentType operator()(const ControlHolder& ) const { return CONTROL; }
+    SegmentType operator()(const Header& ) const { return HEADER; }
+    SegmentType operator()(const Body&) const { return BODY; }
+};
+
+struct GetFlagsVisitor : public boost::static_visitor<uint8_t> {
+    uint8_t operator()(const CommandHolder& ) const { return FIRST_FRAME|LAST_FRAME|FIRST_SEGMENT; }
+    uint8_t operator()(const ControlHolder& ) const { return FIRST_FRAME|LAST_FRAME|FIRST_SEGMENT; }
+    uint8_t operator()(const Header& ) const { return FIRST_FRAME|LAST_FRAME; }
+    uint8_t operator()(const Body&) const { return 0; }
+};
+
+void Unit::updateHeader(uint8_t flags) {
+    GetFlagsVisitor flagger;
+    header.setFlags(flags | variant.apply_visitor(flagger));
+    GetTypeVisitor getter;
+    header.setType(variant.apply_visitor(getter));
+    header.setDataSize(Codec::size(*this));
+    // track automatically set from type.
+    // no channel specified at this point.
+}
+
+std::ostream& operator<<(std::ostream& o, const Unit& u) {
+    return o << u.getHeader() << " " << u.variant.type().name() << "[" << u.variant << "]";
+}
+
+}} // namespace qpid::amqp_0_10