| /* |
| * |
| * 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 "Unit.h" |
| #include "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 |