99 lines
2.7 KiB
C++
99 lines
2.7 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "NativeJSStructDeserializerBackend.h"
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#include "NativeJSScripting.h"
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#include "UObject/UnrealType.h"
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#include "Templates/Casts.h"
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namespace NativeFuncs
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{
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// @todo: this function is copied from CEFJSStructDeserializerBackend.cpp. Move shared utility code to a common header file
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/**
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* Sets the value of the given property.
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*
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* @param Property The property to set.
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* @param Outer The property that contains the property to be set, if any.
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* @param Data A pointer to the memory holding the property's data.
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* @param ArrayIndex The index of the element to set (if the property is an array).
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* @return true on success, false otherwise.
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* @see ClearPropertyValue
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*/
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template<typename FPropertyType, typename PropertyType>
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bool SetPropertyValue( FProperty* Property, FProperty* Outer, void* Data, int32 ArrayIndex, const PropertyType& Value )
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{
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PropertyType* ValuePtr = nullptr;
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FArrayProperty* ArrayProperty = CastField<FArrayProperty>(Outer);
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if (ArrayProperty != nullptr)
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{
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if (ArrayProperty->Inner != Property)
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{
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return false;
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}
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FScriptArrayHelper ArrayHelper(ArrayProperty, ArrayProperty->template ContainerPtrToValuePtr<void>(Data));
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int32 Index = ArrayHelper.AddValue();
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ValuePtr = (PropertyType*)ArrayHelper.GetRawPtr(Index);
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}
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else
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{
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FPropertyType* TypedProperty = CastField<FPropertyType>(Property);
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if (TypedProperty == nullptr || ArrayIndex >= TypedProperty->ArrayDim)
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{
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return false;
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}
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ValuePtr = TypedProperty->template ContainerPtrToValuePtr<PropertyType>(Data, ArrayIndex);
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}
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if (ValuePtr == nullptr)
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{
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return false;
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}
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*ValuePtr = Value;
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return true;
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}
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}
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bool FNativeJSStructDeserializerBackend::ReadProperty( FProperty* Property, FProperty* Outer, void* Data, int32 ArrayIndex )
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{
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switch (GetLastNotation())
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{
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case EJsonNotation::String:
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{
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if (Property->IsA<FStructProperty>())
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{
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FStructProperty* StructProperty = CastField<FStructProperty>(Property);
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if ( StructProperty->Struct == FWebJSFunction::StaticStruct())
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{
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FGuid CallbackID;
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if (!FGuid::Parse(GetReader()->GetValueAsString(), CallbackID))
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{
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return false;
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}
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FWebJSFunction CallbackObject(Scripting, CallbackID);
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return NativeFuncs::SetPropertyValue<FStructProperty, FWebJSFunction>(Property, Outer, Data, ArrayIndex, CallbackObject);
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}
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}
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}
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break;
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}
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// If we reach this, default to parent class behavior
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return FJsonStructDeserializerBackend::ReadProperty(Property, Outer, Data, ArrayIndex);
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}
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FNativeJSStructDeserializerBackend::FNativeJSStructDeserializerBackend(FNativeJSScriptingRef InScripting, FMemoryReader& Reader)
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: FJsonStructDeserializerBackend(Reader)
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, Scripting(InScripting)
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{
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}
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