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53 lines
2.4 KiB
C++
53 lines
2.4 KiB
C++
#pragma once
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#include "inc.h"
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#include "Decay.h"
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#include "PointerIsConvertibleFromTo.h"
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#include "EnableIf.h"
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namespace UE4Invoke_Private
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{
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template <typename BaseType, typename CallableType>
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FORCEINLINE auto DereferenceIfNecessary(CallableType&& Callable)
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-> typename TEnableIf<TPointerIsConvertibleFromTo<typename TDecay<CallableType>::Type, typename TDecay<BaseType>::Type>::Value, decltype((CallableType&&)Callable)>::Type
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{
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return (CallableType&&)Callable;
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}
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template <typename BaseType, typename CallableType>
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FORCEINLINE auto DereferenceIfNecessary(CallableType&& Callable)
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-> typename TEnableIf<!TPointerIsConvertibleFromTo<typename TDecay<CallableType>::Type, typename TDecay<BaseType>::Type>::Value, decltype(*(CallableType&&)Callable)>::Type
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{
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return *(CallableType&&)Callable;
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}
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}
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template <typename FuncType, typename... ArgTypes>
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FORCEINLINE auto Invoke(FuncType&& Func, ArgTypes&&... Args)
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-> decltype(Forward<FuncType>(Func)(Forward<ArgTypes>(Args)...))
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{
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return Forward<FuncType>(Func)(Forward<ArgTypes>(Args)...);
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}
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template <typename ReturnType, typename ObjType, typename CallableType>
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FORCEINLINE auto Invoke(ReturnType ObjType::* pdm, CallableType&& Callable)
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-> decltype(UE4Invoke_Private::DereferenceIfNecessary<ObjType>(Forward<CallableType>(Callable)).*pdm)
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{
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return UE4Invoke_Private::DereferenceIfNecessary<ObjType>(Forward<CallableType>(Callable)).*pdm;
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}
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template <typename ReturnType, typename ObjType, typename... PMFArgTypes, typename CallableType, typename... ArgTypes>
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FORCEINLINE auto Invoke(ReturnType(ObjType::* PtrMemFun)(PMFArgTypes...), CallableType&& Callable, ArgTypes&&... Args)
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-> decltype((UE4Invoke_Private::DereferenceIfNecessary<ObjType>(Forward<CallableType>(Callable)).*PtrMemFun)(Forward<ArgTypes>(Args)...))
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{
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return (UE4Invoke_Private::DereferenceIfNecessary<ObjType>(Forward<CallableType>(Callable)).*PtrMemFun)(Forward<ArgTypes>(Args)...);
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}
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template <typename ReturnType, typename ObjType, typename... PMFArgTypes, typename CallableType, typename... ArgTypes>
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FORCEINLINE auto Invoke(ReturnType(ObjType::* PtrMemFun)(PMFArgTypes...) const, CallableType&& Callable, ArgTypes&&... Args)
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-> decltype((UE4Invoke_Private::DereferenceIfNecessary<ObjType>(Forward<CallableType>(Callable)).*PtrMemFun)(Forward<ArgTypes>(Args)...))
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{
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return (UE4Invoke_Private::DereferenceIfNecessary<ObjType>(Forward<CallableType>(Callable)).*PtrMemFun)(Forward<ArgTypes>(Args)...);
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}
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