ModularFeatureManager.h

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// Copyright Epic Games, Inc. All Rights Reserved.
#pragma once
 
#include "uLang/Common/Containers/SharedPointerArray.h"
#include "uLang/Common/Misc/Optional.h"
 
namespace uLang
{
template<class FeatureType>
class TModularFeatureRegHandle
{
public:
    template<typename... Args_t>
    ULANG_FORCEINLINE TModularFeatureRegHandle(Args_t&&... Args);
 
    ULANG_FORCEINLINE ~TModularFeatureRegHandle();
 
    // Prevent copying/assignment to properly control registration lifetime (since this unregisters on destruction)
    TModularFeatureRegHandle(const TModularFeatureRegHandle&) = delete;
    TModularFeatureRegHandle& operator=(const TModularFeatureRegHandle&) = delete;
 
    ULANG_FORCEINLINE TModularFeatureRegHandle(TModularFeatureRegHandle&& Other)
        : _ModularFeatureRef(Move(Other._ModularFeatureRef))
    {
    }
 
    ULANG_FORCEINLINE TModularFeatureRegHandle& operator=(TModularFeatureRegHandle&& Other)
    {
        _ModularFeatureRef = Move(Other._ModularFeatureRef);
        return *this;
    }
 
    // Conversion methods
    ULANG_FORCEINLINE operator TSRef<FeatureType>() const             { return _ModularFeatureRef; }
    ULANG_FORCEINLINE operator FeatureType*() const                   { return (FeatureType*)_ModularFeatureRef; }
    ULANG_FORCEINLINE FeatureType&                operator*() const   { return *_ModularFeatureRef; }
    ULANG_FORCEINLINE FeatureType*                operator->() const  { return _ModularFeatureRef.operator->(); }
 
    //---------------------------------------------------------------------------------------
 
    ULANG_FORCEINLINE TSRef<FeatureType>&         ToSharedRef()       { return _ModularFeatureRef; }
    ULANG_FORCEINLINE const TSRef<FeatureType>&   ToSharedRef() const { return _ModularFeatureRef; }
 
private:
    TSRef<FeatureType> _ModularFeatureRef;
};
 
/* ModularFeatureManager API
 ******************************************************************************/
 
template<class FeatureType>
int32_t GetModularFeatureCount();
 
template<class FeatureType>
TOptional< TSRef<FeatureType> > GetModularFeature(const int32_t Index = 0);
 
template<class FeatureType>
TSRefArray<FeatureType> GetModularFeaturesOfType();
 
/* TModularFeatureIterator
 ******************************************************************************/
 
template<class FeatureType>
class TModularFeatureIterator
{
public:
    explicit operator bool() const;
    bool operator!() const;
 
    TSRef<FeatureType> Get() const;
    FeatureType& operator*() const;
    FeatureType* operator->() const;
 
    void operator++();
 
private:
    int32_t _Index = 0;
};
 
} // namespace uLang
 
// Template definitions
#include "uLang/Toolchain/ModularFeatureManager.inl"