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92 lines
2.1 KiB
C++
92 lines
2.1 KiB
C++
/*
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* File: BaseSourcePolicy.h
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* Author: winckler
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*
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* Created on October 14, 2015, 1:01 PM
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*/
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#ifndef BASESOURCEPOLICY_H
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#define BASESOURCEPOLICY_H
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#include <type_traits>
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// c++11 code
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// CRTP base class
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template <typename TDerived >
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class BaseSourcePolicy
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{
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public:
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BaseSourcePolicy()
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{}
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virtual ~BaseSourcePolicy()
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{}
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template<typename C = TDerived>
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auto InitSource()-> decltype(static_cast<C*>(this)->InitSource() )
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{
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static_assert(std::is_same<C, TDerived>{}, "BaseSourcePolicy::InitSource hack broken");
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return static_cast<TDerived*>(this)->InitSource();
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}
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template<typename C = TDerived>
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int64_t GetNumberOfEvent()//-> decltype(static_cast<C*>(this)->GetNumberOfEvent() )
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{
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static_assert(std::is_same<C, TDerived>{}, "BaseSourcePolicy::GetNumberOfEvent hack broken");
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return static_cast<TDerived*>(this)->GetNumberOfEvent();
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}
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template<typename C = TDerived>
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auto SetIndex(int64_t eventIdx)-> decltype(static_cast<C*>(this)->SetIndex(eventIdx) )
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{
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static_assert(std::is_same<C, TDerived>{}, "BaseSourcePolicy::SetIndex hack broken");
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return static_cast<TDerived*>(this)->SetIndex(eventIdx);
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}
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template<typename C = TDerived>
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//auto GetOutData()-> decltype(static_cast<C*>(this)->GetOutData() )
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decltype(std::declval<C*>()->GetOutData() ) GetOutData()
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{
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static_assert(std::is_same<C, TDerived>{}, "BaseSourcePolicy::GetOutData hack broken");
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return static_cast<TDerived*>(this)->GetOutData();
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}
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};
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/*
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// c++14 code
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// CRTP base class
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template <typename TDerived >
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class BaseSourcePolicy
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{
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public:
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BaseSourcePolicy()
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{}
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virtual ~BaseSourcePolicy()
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{}
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auto InitSource()
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{
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return static_cast<TDerived*>(this)->InitSource();
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}
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int64_t GetNumberOfEvent()
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{
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return static_cast<TDerived*>(this)->GetNumberOfEvent();
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}
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auto SetIndex(int64_t eventIdx)
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{
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return static_cast<TDerived*>(this)->SetIndex(int64_t eventIdx);
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}
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auto GetOutData()
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{
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return static_cast<TDerived*>(this)->GetOutData();
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}
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};
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*/
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#endif /* BASESOURCEPOLICY_H */
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