115 lines
4.0 KiB
C++
115 lines
4.0 KiB
C++
#pragma once
|
||
namespace shared
|
||
{
|
||
class TemplatedObjectFactoryWrapper;
|
||
/*
|
||
类名：TemplatedObjectFactory
|
||
功能：根据注册类型的信息创建一个TOBJFLG的实例，类型TBase应是TOBJFLG的父类
|
||
*/
|
||
template<typename TBase, typename TOBJFLG>
|
||
class TemplatedObjectFactory : public nbase::Singleton<TemplatedObjectFactory<typename TBase, typename TOBJFLG>>
|
||
{
|
||
private:
|
||
using _ParentType = nbase::Singleton<TemplatedObjectFactory<typename TBase, typename TOBJFLG>>;
|
||
using _MyType = TemplatedObjectFactory<typename TBase, typename TOBJFLG>;
|
||
friend class TemplatedObjectFactoryWrapper;
|
||
|
||
public:
|
||
TemplatedObjectFactory() = default;
|
||
~TemplatedObjectFactory() = default;
|
||
private:
|
||
/*
|
||
创建TClass实例的方法, 存在TClass : public TBase的关系
|
||
params TClass的构造参数
|
||
返回TBase类型的指针对像
|
||
*/
|
||
template<typename TClass, typename... TParam>
|
||
TBase* Create(const TParam&... params)
|
||
{
|
||
return dynamic_cast<TBase*>(new TClass(params...));
|
||
}
|
||
template<typename TClass, typename... TParam>
|
||
void AddCreateFunction(TOBJFLG flg, const TParam&... params)
|
||
{
|
||
auto it = std::find_if(crate_function_list_.begin(), crate_function_list_.end(), [&](const decltype(*crate_function_list_.begin()) & item){
|
||
return flg == item.first;
|
||
});
|
||
if (it == crate_function_list_.end())
|
||
crate_function_list_.emplace_back(std::make_pair(flg, std::bind(&TemplatedObjectFactory::Create<TClass, TParam...>, this, params...)));
|
||
}
|
||
auto CreateSharedObject(TOBJFLG flg)->std::shared_ptr<TBase>
|
||
{
|
||
auto it = std::find_if(crate_function_list_.begin(), crate_function_list_.end(), [&](const decltype(*crate_function_list_.begin()) & item){
|
||
return flg == item.first;
|
||
});
|
||
if (it != crate_function_list_.end())
|
||
return std::shared_ptr<TBase>((*it).second());
|
||
return nullptr;
|
||
}
|
||
TBase* CreateObject(TOBJFLG flg)
|
||
{
|
||
TBase* ret = nullptr;
|
||
auto it = std::find_if(crate_function_list_.begin(), crate_function_list_.end(), [&](const decltype(*crate_function_list_.begin()) & item){
|
||
return flg == item.first;
|
||
});
|
||
if (it != crate_function_list_.end())
|
||
ret = (*it).second();
|
||
return ret;
|
||
}
|
||
void CreateAllSharedObject(std::list<std::shared_ptr<TBase>>& objects)
|
||
{
|
||
for (auto it : crate_function_list_)
|
||
objects.emplace_back(std::shared_ptr<TBase>(it.second()));
|
||
}
|
||
private:
|
||
std::list<std::pair<TOBJFLG, std::function<TBase*()>>> crate_function_list_;
|
||
};
|
||
class TemplatedObjectFactoryWrapper
|
||
{
|
||
public:
|
||
//注册类型
|
||
template<typename TBase, typename TObject, typename TOBJFLG, typename... TParam>
|
||
static void RegisteredOjbect(const TOBJFLG& flg, const TParam&... params)
|
||
{
|
||
using TDecayType = typename std::decay<TOBJFLG>::type;
|
||
if (std::is_base_of<TBase, TObject>::value)
|
||
{
|
||
auto&& manager = TemplatedObjectFactory<TBase, TDecayType>::GetInstance();
|
||
if (manager != nullptr)
|
||
manager->AddCreateFunction<TObject>(flg, params...);
|
||
}
|
||
}
|
||
//创建含引用计数的实例
|
||
template<typename TBase, typename TFLG>
|
||
static auto InstantiateSharedRegisteredOjbect(const TFLG& flag)->std::shared_ptr<TBase>
|
||
{
|
||
using TDecayType = typename std::decay<TFLG>::type;
|
||
auto&& manager = TemplatedObjectFactory<TBase, TDecayType>::GetInstance();
|
||
if (manager != nullptr)
|
||
return manager->CreateSharedObject(flag);
|
||
return nullptr;
|
||
}
|
||
//创建实例
|
||
template<typename TBase, typename TFLG>
|
||
static auto InstantiateRegisteredOjbect(const TFLG& flag)->TBase*
|
||
{
|
||
using TDecayType = typename std::decay<TFLG>::type;
|
||
auto&& manager = TemplatedObjectFactory<TBase, TDecayType>::GetInstance();
|
||
if (manager != nullptr)
|
||
return manager->CreateObject(flag);
|
||
return nullptr;
|
||
}
|
||
//创建所有已注册为 TBase 与 TFLG 为标识的的实例
|
||
template<typename TBase, typename TFLG>
|
||
static auto InstantiateAllRegisteredSharedOjbect()->std::list<std::shared_ptr<TBase>>
|
||
{
|
||
using TDecayType = typename std::decay<TFLG>::type;
|
||
std::list<std::shared_ptr<TBase>> ret;
|
||
auto&& manager = TemplatedObjectFactory<TBase, TDecayType>::GetInstance();
|
||
if (manager != nullptr)
|
||
manager->CreateAllSharedObject(ret);
|
||
return ret;
|
||
}
|
||
};
|
||
}
|