90 lines
2.2 KiB
C++
90 lines
2.2 KiB
C++
#ifndef OMG_DDS_TOPIC_TOPIC_TRAITS_HPP_
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#define OMG_DDS_TOPIC_TOPIC_TRAITS_HPP_
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// Copyright 2010, Object Management Group, Inc.
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// Copyright 2010, PrismTech, Corp.
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// Copyright 2010, Real-Time Innovations, Inc.
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// All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <string>
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//==============================================================================
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namespace dds
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{
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namespace topic
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{
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template <typename T>
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struct is_topic_type;
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/** @cond */
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template <typename T>
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struct topic_type_support;
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/** @endcond */
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/**
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* @brief
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* Support functionality to get the default type_name of a Topic type.
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*
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* @code{.cpp}
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* std::string typeName = dds::topic::topic_type_name<Foo::Bar>::value();
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* @endcode
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*/
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template <typename T>
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struct topic_type_name
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{
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static std::string value()
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{
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return "Undefined";
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}
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};
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}
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}
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//==============================================================================
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/// @brief
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/// Support functionality to check if a given object type is a Topic.
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///
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/// @code{.cpp}
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/// if (dds::topic::is_topic_type<Foo::Bar>::value) {
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/// // Foo::Bar type is considered a Topic
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/// } else {
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/// // Foo::Bar type is NOT considered a Topic
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/// }
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/// @endcode
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template <typename T>
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struct dds::topic::is_topic_type
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{
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enum {value = 0 };
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};
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/** @cond
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* IsoCpp doesn't know the TypeSupport concept. The type is automatically
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* registered when an Topic is created. So, what does this function do?
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*/
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template <typename T>
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struct dds::topic::topic_type_support { };
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/** @endcond */
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#define REGISTER_TOPIC_TYPE(TOPIC_TYPE) \
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namespace dds { namespace topic { \
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template<> struct is_topic_type<TOPIC_TYPE> { \
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enum { value = 1 }; \
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}; } }
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#endif /* OMG_DDS_TOPIC_TOPIC_TRAITS_HPP_ */
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