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Split message factory into static and non-static parts
Signed-off-by: Michael Carroll <[email protected]>
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| Original file line number | Diff line number | Diff line change |
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| /* | ||
| * Copyright (C) 2016 Open Source Robotics Foundation | ||
| * | ||
| * Licensed 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. | ||
| * | ||
| */ | ||
| #ifndef GZ_MSGS_MESSAGE_FACTORY_HH_ | ||
| #define GZ_MSGS_MESSAGE_FACTORY_HH_ | ||
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| #include <string> | ||
| #include <map> | ||
| #include <memory> | ||
| #include <vector> | ||
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| #include "gz/msgs/config.hh" | ||
| #include "gz/msgs/Export.hh" | ||
| #include "gz/msgs/detail/dynamic_message_cast.hh" | ||
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| namespace gz::msgs { | ||
| /// Forward declarations | ||
| class DynamicFactory; | ||
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| // Inline bracket to help doxygen filtering. | ||
| inline namespace GZ_MSGS_VERSION_NAMESPACE { | ||
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| class GZ_MSGS_VISIBLE MessageFactory | ||
| { | ||
| public: using Message = google::protobuf::Message; | ||
| public: using MessagePtr = std::unique_ptr<Message>; | ||
| public: using FactoryFn = std::function<MessagePtr(void)>; | ||
| public: using FactoryFnCollection = std::map<std::string, FactoryFn>; | ||
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| /// \brief Constructor | ||
| public: MessageFactory(); | ||
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| /// \brief Destructor | ||
| public: ~MessageFactory(); | ||
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| /// \brief Register a message. | ||
| /// \param[in] _msgType Type of message to register. | ||
| /// \param[in] _factoryfn Function that generates the message. | ||
| public: void Register(const std::string &_msgType, FactoryFn _factoryFn); | ||
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| /// \brief Register a collection of messages. | ||
| /// \param[in] _functions Collection of messages to register. | ||
| /// \return Number of registered message types | ||
| public: int RegisterCollection(FactoryFnCollection &_funtions); | ||
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| /// \brief Create a new instance of a message. | ||
| /// \param[in] _msgType Type of message to create. | ||
| /// \return Pointer to a google protobuf message. Null if the message | ||
| /// type could not be handled. | ||
| public: template<typename T> | ||
| std::unique_ptr<T> New(const std::string &_msgType) | ||
| { | ||
| return detail::dynamic_message_cast<T>(New(_msgType)); | ||
| } | ||
|
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| /// \brief Create a new instance of a message. | ||
| /// \param[in] _msgType Type of message to create. | ||
| /// \param[in] _args Message arguments. This will populate the message. | ||
| /// \return Pointer to a google protobuf message. Null if the message | ||
| /// type could not be handled. | ||
| public: template<typename T> | ||
| std::unique_ptr<T> New(const std::string &_msgType, | ||
| const std::string &_args) | ||
| { | ||
| return detail::dynamic_message_cast<T>(New(_msgType, _args)); | ||
| } | ||
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| /// \brief Create a new instance of a message. | ||
| /// \param[in] _msgType Type of message to create. | ||
| /// \return Pointer to a google protobuf message. Null if the message | ||
| /// type could not be handled. | ||
| public: MessagePtr New(const std::string &_msgType); | ||
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| /// \brief Create a new instance of a message. | ||
| /// \param[in] _msgType Type of message to create. | ||
| /// \param[in] _args Message arguments. This will populate the message. | ||
| /// \return Pointer to a google protobuf message. Null if the message | ||
| /// type could not be handled. | ||
| public: MessagePtr New( | ||
| const std::string &_msgType, const std::string &_args); | ||
|
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| /// \brief Get all the message types | ||
| /// \param[out] _types Vector of strings of the message types. | ||
| public: void Types(std::vector<std::string> &_types); | ||
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| /// \brief Load a collection of descriptor .desc files. | ||
| /// \param[in] _paths A set of directories containing .desc decriptor | ||
| /// files. Each directory should be separated by ":". | ||
| public: void LoadDescriptors(const std::string &_paths); | ||
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| /// \brief A list of registered message types | ||
| private: FactoryFnCollection msgMap; | ||
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| /// \brief Pointer to dynamic factory implementation | ||
| private: std::unique_ptr<gz::msgs::DynamicFactory> dynamicFactory; | ||
| }; | ||
| } | ||
| } // namespace gz::msgs | ||
| #endif // GZ_MSGS_MESSAGE_FACTORY_HH_ |
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| @@ -0,0 +1,49 @@ | ||
| /* | ||
| * Copyright (C) 2023 Open Source Robotics Foundation | ||
| * | ||
| * Licensed 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. | ||
| * | ||
| */ | ||
|
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| #ifndef GZ_MSGS_DETAIL_DYNAMIC_POINTER_CAST_HH_ | ||
| #define GZ_MSGS_DETAIL_DYNAMIC_POINTER_CAST_HH_ | ||
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| #include <memory> | ||
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| #ifdef _MSC_VER | ||
| #pragma warning(push) | ||
| #pragma warning(disable: 4100 4512 4127 4068 4244 4267 4251 4146) | ||
| #endif | ||
| #include <google/protobuf/message.h> | ||
| #ifdef _MSC_VER | ||
| #pragma warning(pop) | ||
| #endif | ||
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| namespace gz::msgs::detail | ||
| { | ||
|
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| /// Cast a base unique pointer to protobuf message type to child type | ||
| template<typename MsgT> | ||
| std::unique_ptr<MsgT> | ||
| dynamic_message_cast(std::unique_ptr<google::protobuf::Message> &&_baseMsg) | ||
| { | ||
| auto converted = std::unique_ptr<MsgT>{dynamic_cast<MsgT*>(_baseMsg.get())}; | ||
| if (converted) { | ||
| (void) _baseMsg.release(); | ||
| } | ||
| return converted; | ||
| } | ||
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| } // namespace gz::msgs::detail | ||
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| #endif // GZ_MSGS_DETAIL_DYNAMIC_POINTER_CAST_HH_ |
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