PropertyTypeName.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreTypes.h"
#include "Containers/Array.h"
#include "Containers/StringFwd.h"
#include "UObject/NameTypes.h"
 
#define UE_API COREUOBJECT_API
 
class FArchive;
class FProperty;
class FStructuredArchiveSlot;
class UField;
struct FGuid;
 
namespace UE { class FPropertyTypeNameBuilder; }
 
namespace UE
{
 
struct FPropertyTypeNameNode
{
    FName Name;
    int32 InnerCount = 0;
};
 
class FPropertyTypeName
{
public:
    FPropertyTypeName() = default;
 
    [[nodiscard]] UE_API explicit FPropertyTypeName(const FProperty* Property);
 
    [[nodiscard]] inline bool IsEmpty() const
    {
        return Index == 0;
    }
 
    [[nodiscard]] UE_API FName GetName() const;
 
    [[nodiscard]] UE_API int32 GetParameterCount() const;
 
    [[nodiscard]] UE_API FPropertyTypeName GetParameter(int32 ParamIndex) const;
 
    [[nodiscard]] inline FName GetParameterName(int32 ParamIndex) const
    {
        return GetParameter(ParamIndex).GetName();
    }
 
    inline void Reset()
    {
        Index = 0;
    }
 
    [[nodiscard]] UE_API bool IsStruct(FName StructName) const;
    [[nodiscard]] UE_API bool IsEnum(FName EnumName) const;
 
private:
    UE_API friend uint32 GetTypeHash(const FPropertyTypeName& TypeName);
    UE_API friend void AppendHash(FBlake3& Builder, const FPropertyTypeName& TypeName);
 
    UE_API friend bool operator==(const FPropertyTypeName& Lhs, const FPropertyTypeName& Rhs);
    UE_API friend bool operator<(const FPropertyTypeName& Lhs, const FPropertyTypeName& Rhs);
 
    UE_API friend FArchive& operator<<(FArchive& Ar, FPropertyTypeName& TypeName);
    UE_API friend void operator<<(FStructuredArchiveSlot Slot, FPropertyTypeName& TypeName);
 
    UE_API friend FStringBuilderBase& operator<<(FStringBuilderBase& Builder, const FPropertyTypeName& TypeName);
 
    int32 Index = 0;
 
    friend FPropertyTypeNameBuilder;
};
 
class FPropertyTypeNameBuilder
{
public:
    UE_API void AddName(FName Name);
 
    UE_API void AddGuid(const FGuid& Guid);
 
    UE_API void AddPath(const UField* Field);
 
    UE_API void AddType(FPropertyTypeName Name);
 
    UE_API void BeginParameters();
 
    UE_API void EndParameters();
 
    [[nodiscard]] UE_API FPropertyTypeName Build() const;
 
    UE_API void Reset();
 
    [[nodiscard]] UE_API bool TryParse(FStringView Name);
 
private:
    [[nodiscard]] UE_REWRITE friend auto begin(const FPropertyTypeNameBuilder& Builder) { return Builder.Nodes.begin(); }
    [[nodiscard]] UE_REWRITE friend auto end(const FPropertyTypeNameBuilder& Builder) { return Builder.Nodes.end(); }
 
    TArray<FPropertyTypeNameNode, TInlineAllocator<10>> Nodes;
    TArray<int32, TInlineAllocator<10>> OuterNodeIndex;
    int32 ActiveIndex = INDEX_NONE;
};
 
} // UE
 
#undef UE_API