// Copyright Epic Games, Inc. All Rights Reserved.

#pragma once

#include "CoreMinimal.h"
#include "Serialization/ArchiveUObject.h"

/*----------------------------------------------------------------------------
        FArchiveFindCulprit.
----------------------------------------------------------------------------*/
/**
 * Archive for finding who references an object.
 */
class FArchiveFindCulprit: public FArchiveUObject
{
public:
    /**
     * Constructor
     *
     * @param	InFind	the object that we'll be searching for references to
     * @param	Src		the object to serialize which may contain a reference to InFind
     * @param	InPretendSaving		if true, marks the archive as saving and persistent, so that a different serialization codepath is followed
     */
    COREUOBJECT_API FArchiveFindCulprit(UObject* InFind, UObject* Src, bool InPretendSaving);

    int32 GetCount() const
    {
        return Count;
    }
    int32 GetCount(TArray<const FProperty*>& Properties)
    {
        Properties = Referencers;
        return Count;
    }

    /**
     * Returns the name of the Archive.  Useful for getting the name of the package a struct or object
     * is in when a loading error occurs.
     *
     * This is overridden for the specific Archive Types
     **/
    virtual FString GetArchiveName() const { return TEXT("FArchiveFindCulprit"); }

protected:
    UObject* Find;
    int32 Count;
    bool PretendSaving;
    class TArray<const FProperty*> Referencers;

private:
    COREUOBJECT_API FArchive& operator<<(class UObject*& Obj);
};