proton/scalar.hpp

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00001 #ifndef PROTON_SCALAR_HPP
00002 #define PROTON_SCALAR_HPP
00003 
00004 /*
00005  * Licensed to the Apache Software Foundation (ASF) under one
00006  * or more contributor license agreements.  See the NOTICE file
00007  * distributed with this work for additional information
00008  * regarding copyright ownership.  The ASF licenses this file
00009  * to you under the Apache License, Version 2.0 (the
00010  * "License"); you may not use this file except in compliance
00011  * with the License.  You may obtain a copy of the License at
00012  *
00013  *   http://www.apache.org/licenses/LICENSE-2.0
00014  *
00015  * Unless required by applicable law or agreed to in writing,
00016  * software distributed under the License is distributed on an
00017  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
00018  * KIND, either express or implied.  See the License for the
00019  * specific language governing permissions and limitations
00020  * under the License.
00021  */
00022 
00023 #include "./scalar_base.hpp"
00024 
00025 #include "proton/null.hpp"
00026 
00027 #include <proton/type_compat.h>
00028 
00031 
00032 namespace proton {
00033 
00037 class scalar : public scalar_base {
00038   public:
00040     PN_CPP_EXTERN scalar() {}
00041 
00043     template <class T> scalar(const T& x) { *this = x; }
00044 
00046     template <class T> scalar& operator=(const T& x) { put(x); return *this; }
00047 
00049     void clear() { *this = null(); }
00050 };
00051 
00060 template<class T> T get(const scalar& s) { return internal::get<T>(s); }
00061 
00072 template<class T> T coerce(const scalar& x) { return internal::coerce<T>(x); }
00073 
00074 
00085 template<class T> T coerce(scalar& x) { return internal::coerce<T>(x); }
00086 
00087 } // proton
00088 
00089 #endif // PROTON_SCALAR_HPP

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