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Diffstat (limited to 'qpid/cpp/src/qpid/framing/AMQHeaderBody.h')
-rw-r--r-- | qpid/cpp/src/qpid/framing/AMQHeaderBody.h | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/qpid/cpp/src/qpid/framing/AMQHeaderBody.h b/qpid/cpp/src/qpid/framing/AMQHeaderBody.h new file mode 100644 index 0000000000..a8c326969a --- /dev/null +++ b/qpid/cpp/src/qpid/framing/AMQHeaderBody.h @@ -0,0 +1,109 @@ +#ifndef QPID_FRAMING_AMQHEADERBODY_H +#define QPID_FRAMING_AMQHEADERBODY_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/amqp_types.h" +#include "qpid/framing/AMQBody.h" +#include "qpid/framing/Buffer.h" +#include "qpid/framing/DeliveryProperties.h" +#include "qpid/framing/MessageProperties.h" +#include "qpid/CommonImportExport.h" +#include <iostream> + +#include <boost/optional.hpp> + + +namespace qpid { +namespace framing { + +class QPID_COMMON_CLASS_EXTERN AMQHeaderBody : public AMQBody +{ + template <class T> struct OptProps { boost::optional<T> props; }; + template <class Base, class T> + struct PropSet : public Base, public OptProps<T> { + uint32_t encodedSize() const { + const boost::optional<T>& p=this->OptProps<T>::props; + return (p ? p->encodedSize() : 0) + Base::encodedSize(); + } + void encode(Buffer& buffer) const { + const boost::optional<T>& p=this->OptProps<T>::props; + if (p) p->encode(buffer); + Base::encode(buffer); + } + bool decode(Buffer& buffer, uint32_t size, uint16_t type) { + boost::optional<T>& p=this->OptProps<T>::props; + if (type == T::TYPE) { + p=T(); + p->decodeStructBody(buffer, size); + return true; + } + else + return Base::decode(buffer, size, type); + } + void print(std::ostream& out) const { + const boost::optional<T>& p=this->OptProps<T>::props; + if (p) out << *p; + Base::print(out); + } + }; + + struct Empty { + uint32_t encodedSize() const { return 0; } + void encode(Buffer&) const {}; + bool decode(Buffer&, uint32_t, uint16_t) const { return false; }; + void print(std::ostream&) const {} + }; + + // Could use boost::mpl::fold to construct a larger set. + typedef PropSet<PropSet<Empty, DeliveryProperties>, MessageProperties> Properties; + + Properties properties; + +public: + + inline uint8_t type() const { return HEADER_BODY; } + + QPID_COMMON_EXTERN uint32_t encodedSize() const; + QPID_COMMON_EXTERN void encode(Buffer& buffer) const; + QPID_COMMON_EXTERN void decode(Buffer& buffer, uint32_t size); + QPID_COMMON_EXTERN uint64_t getContentLength() const; + QPID_COMMON_EXTERN void print(std::ostream& out) const; + QPID_COMMON_EXTERN void accept(AMQBodyConstVisitor&) const; + + template <class T> T* get(bool create) { + boost::optional<T>& p=properties.OptProps<T>::props; + if (create && !p) p=T(); + return p.get_ptr(); + } + + template <class T> const T* get() const { + return properties.OptProps<T>::props.get_ptr(); + } + + boost::intrusive_ptr<AMQBody> clone() const { return BodyFactory::copy(*this); } +}; + +}} + + + +#endif /*!QPID_FRAMING_AMQHEADERBODY_H*/ |