51 lines
1.1 KiB
C++
51 lines
1.1 KiB
C++
#ifndef ComponentFactory_h__
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#define ComponentFactory_h__
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#include <string>
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#include <memory>
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#include <functional>
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#include <map>
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struct Component;
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#define REGISTER_COMPONENT(NAME, TYPE) \
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static ComponentRegistrar<TYPE> registrar(NAME);
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template <typename T>
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class ComponentRegistrar
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{
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public:
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ComponentRegistrar(std::string name)
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{
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ComponentFactory::Instance()->Register(name, [](void) -> std::shared_ptr<Component> { return std::shared_ptr<Component>(new T()); });
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}
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};
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class ComponentFactory
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{
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public:
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static ComponentFactory* Instance()
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{
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static ComponentFactory factory;
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return &factory;
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}
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void Register(std::string name, std::function<std::shared_ptr<Component>(void)> factoryFunction)
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{
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m_FactoryFunctions[name] = factoryFunction;
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}
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std::shared_ptr<Component> Create(std::string name)
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{
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auto it = m_FactoryFunctions.find(name);
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if (it != m_FactoryFunctions.end())
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return it->second();
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else
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return nullptr;
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}
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private:
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std::map<std::string, std::function<std::shared_ptr<Component>(void)>> m_FactoryFunctions;
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};
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#endif // ComponentFactory_h__
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