StructDeserializerBackendUtilities.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "UObject/Class.h"
#include "UObject/StrProperty.h"
#include "UObject/UnrealType.h"
#include "UObject/EnumProperty.h"
#include "UObject/TextProperty.h"
 
 
struct StructDeserializerBackendUtilities
{
    static bool ClearPropertyValue(FProperty* Property, FProperty* Outer, void* Data, int32 ArrayIndex)
    {
        FArrayProperty* ArrayProperty = CastField<FArrayProperty>(Outer);
 
        if (ArrayProperty != nullptr)
        {
            if (ArrayProperty->Inner != Property)
            {
                return false;
            }
 
            FScriptArrayHelper ArrayHelper(ArrayProperty, ArrayProperty->template ContainerPtrToValuePtr<void>(Data));
            ArrayIndex = ArrayHelper.AddValue();
        }
 
        Property->ClearValue_InContainer(Data, ArrayIndex);
 
        return true;
    }
 
 
    static void* GetPropertyValuePtr(FProperty* Property, FProperty* Outer, void* Data, int32 ArrayIndex)
    {
        check(Property);
 
        if (FArrayProperty* ArrayProperty = CastField<FArrayProperty>(Outer))
        {
            if (ArrayProperty->Inner != Property)
            {
                return nullptr;
            }
 
            FScriptArrayHelper ArrayHelper(ArrayProperty, ArrayProperty->template ContainerPtrToValuePtr<void>(Data));
            int32 Index = ArrayHelper.AddValue();
 
            return ArrayHelper.GetRawPtr(Index);
        }
 
        if (ArrayIndex >= Property->ArrayDim)
        {
            return nullptr;
        }
 
        return Property->template ContainerPtrToValuePtr<void>(Data, ArrayIndex);
    }
 
    template<typename PropertyType, typename ValueType>
    static bool SetPropertyValue(PropertyType* Property, FProperty* Outer, void* Data, int32 ArrayIndex, const ValueType& Value)
    {
        if (void* Ptr = GetPropertyValuePtr(Property, Outer, Data, ArrayIndex))
        {
            Property->SetPropertyValue(Ptr, Value);
            return true;
        }
 
        return false;
    }
};