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86 lines
2.2 KiB
C++
86 lines
2.2 KiB
C++
// Copyright 1998-2015 Epic Games, Inc. All Rights Reserved.
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/*=============================================================================
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ScriptDisassembler.h: Disassembler for Kismet bytecode.
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=============================================================================*/
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#ifndef __SCRIPTDISASSEMBLER_H__
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#define __SCRIPTDISASSEMBLER_H__
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/**
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* Kismet bytecode disassembler; Can be used to create a human readable version
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* of Kismet bytecode for a specified structure or class.
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*/
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class FKismetBytecodeDisassembler
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{
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private:
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TArray<uint8> Script;
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FString Indents;
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FOutputDevice& Ar;
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public:
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/**
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* Construct a disassembler that will output to the specified archive.
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*
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* @param InAr The archive to emit disassembled bytecode to.
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*/
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UNREALED_API FKismetBytecodeDisassembler(FOutputDevice& InAr);
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/**
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* Disassemble all of the script code in a single structure.
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*
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* @param [in,out] Source The structure to disassemble.
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*/
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UNREALED_API void DisassembleStructure(UFunction* Source);
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/**
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* Disassemble all functions in any classes that have matching names.
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*
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* @param InAr The archive to emit disassembled bytecode to.
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* @param ClassnameSubstring A class must contain this substring to be disassembled.
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*/
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UNREALED_API static void DisassembleAllFunctionsInClasses(FOutputDevice& Ar, const FString& ClassnameSubstring);
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private:
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// Reading functions
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int32 ReadINT(int32& ScriptIndex);
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uint64 ReadQWORD(int32& ScriptIndex);
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uint8 ReadBYTE(int32& ScriptIndex);
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FString ReadName(int32& ScriptIndex);
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uint16 ReadWORD(int32& ScriptIndex);
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float ReadFLOAT(int32& ScriptIndex);
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CodeSkipSizeType ReadSkipCount(int32& ScriptIndex);
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FString ReadString8(int32& ScriptIndex);
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FString ReadString16(int32& ScriptIndex);
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EExprToken SerializeExpr(int32& ScriptIndex);
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void ProcessCastByte(int32 CastType, int32& ScriptIndex);
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void ProcessCommon(int32& ScriptIndex, EExprToken Opcode);
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void InitTables();
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template<typename T>
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void Skip(int32& ScriptIndex)
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{
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ScriptIndex += sizeof(T);
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}
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void AddIndent()
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{
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Indents += TEXT(" ");
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}
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void DropIndent()
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{
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// Blah, this is awful
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Indents = Indents.Left(Indents.Len() - 2);
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}
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template <typename T>
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T* ReadPointer(int32& ScriptIndex)
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{
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return (T*)ReadQWORD(ScriptIndex);
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}
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};
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#endif
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