proton/annotation_key.hpp

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00001 #ifndef PROTON_ANNOTATION_KEY_HPP
00002 #define PROTON_ANNOTATION_KEY_HPP
00003 
00004 /*
00005  *
00006  * Licensed to the Apache Software Foundation (ASF) under one
00007  * or more contributor license agreements.  See the NOTICE file
00008  * distributed with this work for additional information
00009  * regarding copyright ownership.  The ASF licenses this file
00010  * to you under the Apache License, Version 2.0 (the
00011  * "License"); you may not use this file except in compliance
00012  * with the License.  You may obtain a copy of the License at
00013  *
00014  *   http://www.apache.org/licenses/LICENSE-2.0
00015  *
00016  * Unless required by applicable law or agreed to in writing,
00017  * software distributed under the License is distributed on an
00018  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
00019  * KIND, either express or implied.  See the License for the
00020  * specific language governing permissions and limitations
00021  * under the License.
00022  *
00023  */
00024 
00025 #include "./scalar_base.hpp"
00026 #include "./symbol.hpp"
00027 
00028 #include <proton/type_compat.h>
00029 
00032 
00033 namespace proton {
00034 
00038 class annotation_key : public scalar_base {
00039   public:
00041     annotation_key() {}
00042 
00044     template <class T> annotation_key(const T& x) { *this = x; }
00045 
00048     annotation_key& operator=(uint64_t x) { put_(x); return *this; }
00049     annotation_key& operator=(const symbol& x) { put_(x); return *this; }
00051 
00054     annotation_key& operator=(const std::string& x) { put_(symbol(x)); return *this; }
00055     annotation_key& operator=(const char *x) { put_(symbol(x)); return *this; }
00057 
00059   friend class message;
00060   friend class codec::decoder;
00062 };
00063 
00066 template <class T> T get(const annotation_key& x);
00068 
00072 template<> inline uint64_t get<uint64_t>(const annotation_key& x) { return internal::get<uint64_t>(x); }
00073 
00077 template<> inline symbol get<symbol>(const annotation_key& x) { return internal::get<symbol>(x); }
00078 
00083 template<class T> T coerce(const annotation_key& x) { return internal::coerce<T>(x); }
00084 
00085 } // proton
00086 
00087 #endif // PROTON_ANNOTATION_KEY_HPP

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