generated from zhangwei/Train_Identify
62 lines
2.4 KiB
C
62 lines
2.4 KiB
C
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/*
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* c++类反射
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*/
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#ifndef INC_ENGINE_FACTORY_H
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#define INC_ENGINE_FACTORY_H
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#include <string>
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#include <map>
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#include <functional>
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//引擎注册宏
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#define ENGINE_REGIST(class_name) \
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namespace ai_matrix \
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{ \
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class class_name##Helper \
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{ \
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public: \
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class_name##Helper() \
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{ \
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EngineFactory::RegisterEngine(#class_name, class_name##Helper::CreatObjFunc); \
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} \
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static void *CreatObjFunc() \
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{ \
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return new class_name; \
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} \
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}; \
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static class_name##Helper class_name##helper; \
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}
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namespace ai_matrix
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{
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using Constructor = std::function<void *()>;
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class EngineFactory
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{
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public:
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static void RegisterEngine(std::string className, Constructor constructor)
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{
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Constructors()[className] = constructor;
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}
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static void *MakeEngine(const std::string &className)
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{
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auto itr = Constructors().find(className);
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if (itr == Constructors().end())
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{
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return nullptr;
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}
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return ((Constructor)itr->second)();
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}
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private:
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inline static std::map<std::string, Constructor> &Constructors()
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{
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static std::map<std::string, Constructor> instance;
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return instance;
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}
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};
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}
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#endif
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