SuperTuxKart 1.5 upstream source (from official release tarball)
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Benjamin
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/*
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AngelCode Scripting Library
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Copyright (c) 2003-2021 Andreas Jonsson
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any
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damages arising from the use of this software.
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Permission is granted to anyone to use this software for any
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purpose, including commercial applications, and to alter it and
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redistribute it freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you
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must not claim that you wrote the original software. If you use
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this software in a product, an acknowledgment in the product
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documentation would be appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and
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must not be misrepresented as being the original software.
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3. This notice may not be removed or altered from any source
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distribution.
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The original version of this library can be located at:
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http://www.angelcode.com/angelscript/
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Andreas Jonsson
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andreas@angelcode.com
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*/
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//
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// as_restore.h
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//
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// Functions for saving and restoring module bytecode
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// asCRestore was originally written by Dennis Bollyn, dennis@gyrbo.be
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// It was later split in two classes asCReader and asCWriter by me
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#ifndef AS_RESTORE_H
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#define AS_RESTORE_H
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#include "as_scriptengine.h"
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#include "as_context.h"
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#include "as_map.h"
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BEGIN_AS_NAMESPACE
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class asCReader
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{
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public:
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asCReader(asCModule *module, asIBinaryStream *stream, asCScriptEngine *engine);
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int Read(bool *wasDebugInfoStripped);
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protected:
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asCModule *module;
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asIBinaryStream *stream;
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asCScriptEngine *engine;
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bool noDebugInfo;
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bool error;
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asUINT bytesRead;
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int Error(const char *msg);
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int ReadInner();
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int ReadData(void *data, asUINT size);
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void ReadString(asCString *str);
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asCScriptFunction *ReadFunction(bool &isNew, bool addToModule = true, bool addToEngine = true, bool addToGC = true, bool *isExternal = 0);
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void ReadFunctionSignature(asCScriptFunction *func, asCObjectType **parentClass = 0);
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void ReadGlobalProperty();
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void ReadObjectProperty(asCObjectType *ot);
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void ReadDataType(asCDataType *dt);
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asCTypeInfo *ReadTypeInfo();
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void ReadTypeDeclaration(asCTypeInfo *ot, int phase, bool *isExternal = 0);
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void ReadByteCode(asCScriptFunction *func);
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asWORD ReadEncodedUInt16();
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asUINT ReadEncodedUInt();
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int ReadEncodedInt();
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asQWORD ReadEncodedUInt64();
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asUINT SanityCheck(asUINT val, asUINT max);
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int SanityCheck(int val, asUINT max);
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void ReadUsedTypeIds();
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void ReadUsedFunctions();
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void ReadUsedGlobalProps();
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void ReadUsedStringConstants();
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void ReadUsedObjectProps();
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asCTypeInfo * FindType(int idx);
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int FindTypeId(int idx);
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short FindObjectPropOffset(asWORD index);
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asCScriptFunction *FindFunction(int idx);
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// After loading, each function needs to be translated to update pointers, function ids, etc
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void TranslateFunction(asCScriptFunction *func);
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void CalculateAdjustmentByPos(asCScriptFunction *func);
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int AdjustStackPosition(int pos);
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int AdjustGetOffset(int offset, asCScriptFunction *func, asDWORD programPos);
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void CalculateStackNeeded(asCScriptFunction *func);
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asCScriptFunction *GetCalledFunction(asCScriptFunction *func, asDWORD programPos);
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// Temporary storage for persisting variable data
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asCArray<int> usedTypeIds;
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asCArray<asCTypeInfo*> usedTypes;
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asCArray<asCScriptFunction*> usedFunctions;
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asCArray<void*> usedGlobalProperties;
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asCArray<void*> usedStringConstants;
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asCArray<asCScriptFunction*> savedFunctions;
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asCArray<asCDataType> savedDataTypes;
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asCArray<asCString> savedStrings;
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asCArray<int> adjustByPos;
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asCArray<int> adjustNegativeStackByPos;
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struct SObjProp
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{
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asCObjectType *objType;
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asCObjectProperty *prop;
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};
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asCArray<SObjProp> usedObjectProperties;
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asCMap<void*,bool> existingShared;
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asCMap<asCScriptFunction*,bool> dontTranslate;
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// Helper class for adjusting offsets within initialization list buffers
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struct SListAdjuster
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{
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SListAdjuster(asCReader *rd, asDWORD *bc, asCObjectType *ot);
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void AdjustAllocMem();
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int AdjustOffset(int offset);
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void SetRepeatCount(asUINT rc);
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void SetNextType(int typeId);
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struct SInfo
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{
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asUINT repeatCount;
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asSListPatternNode *startNode;
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};
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asCArray<SInfo> stack;
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asCReader *reader;
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asDWORD *allocMemBC;
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asUINT maxOffset;
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asCObjectType *patternType;
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asUINT repeatCount;
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int lastOffset;
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int nextOffset;
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asUINT lastAdjustedOffset;
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asSListPatternNode *patternNode;
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int nextTypeId;
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};
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asCArray<SListAdjuster*> listAdjusters;
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};
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#ifndef AS_NO_COMPILER
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class asCWriter
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{
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public:
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asCWriter(asCModule *module, asIBinaryStream *stream, asCScriptEngine *engine, bool stripDebugInfo);
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int Write();
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protected:
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asCModule *module;
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asIBinaryStream *stream;
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asCScriptEngine *engine;
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bool stripDebugInfo;
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bool error;
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asUINT bytesWritten;
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int Error(const char *msg);
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int WriteData(const void *data, asUINT size);
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void WriteString(asCString *str);
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void WriteFunction(asCScriptFunction *func);
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void WriteFunctionSignature(asCScriptFunction *func);
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void WriteGlobalProperty(asCGlobalProperty *prop);
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void WriteObjectProperty(asCObjectProperty *prop);
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void WriteDataType(const asCDataType *dt);
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void WriteTypeInfo(asCTypeInfo *ot);
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void WriteTypeDeclaration(asCTypeInfo *ot, int phase);
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void WriteByteCode(asCScriptFunction *func);
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void WriteEncodedInt64(asINT64 i);
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// Helper functions for storing variable data
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int FindTypeInfoIdx(asCTypeInfo *ti);
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int FindTypeIdIdx(int typeId);
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int FindFunctionIndex(asCScriptFunction *func);
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int FindGlobalPropPtrIndex(void *);
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int FindStringConstantIndex(void *str);
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int FindObjectPropIndex(short offset, int typeId, asDWORD *bc);
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void CalculateAdjustmentByPos(asCScriptFunction *func);
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int AdjustStackPosition(int pos);
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int AdjustProgramPosition(int pos);
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int AdjustGetOffset(int offset, asCScriptFunction *func, asDWORD programPos);
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// Intermediate data used for storing that which isn't constant, function id's, pointers, etc
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void WriteUsedTypeIds();
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void WriteUsedFunctions();
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void WriteUsedGlobalProps();
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void WriteUsedStringConstants();
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void WriteUsedObjectProps();
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// Temporary storage for persisting variable data
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asCArray<int> usedTypeIds;
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asCArray<asCTypeInfo*> usedTypes;
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asCArray<asCScriptFunction*> usedFunctions;
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asCArray<void*> usedGlobalProperties;
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asCArray<void*> usedStringConstants;
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asCMap<void*, int> stringToIndexMap;
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asCArray<asCScriptFunction*> savedFunctions;
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asCArray<asCDataType> savedDataTypes;
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asCArray<asCString> savedStrings;
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asCMap<asCString, int> stringToIdMap;
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asCArray<int> adjustStackByPos;
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asCArray<int> adjustNegativeStackByPos;
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asCArray<int> bytecodeNbrByPos;
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struct SObjProp
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{
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asCObjectType *objType;
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asCObjectProperty *prop;
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};
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asCArray<SObjProp> usedObjectProperties;
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// Helper class for adjusting offsets within initialization list buffers
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struct SListAdjuster
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{
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SListAdjuster(asCObjectType *ot);
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int AdjustOffset(int offset, asCObjectType *listPatternType);
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void SetRepeatCount(asUINT rc);
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void SetNextType(int typeId);
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struct SInfo
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{
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asUINT repeatCount;
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asSListPatternNode *startNode;
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};
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asCArray<SInfo> stack;
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asCObjectType *patternType;
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asUINT repeatCount;
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asSListPatternNode *patternNode;
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asUINT entries;
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int lastOffset; // Last offset adjusted
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int nextOffset; // next expected offset to be adjusted
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int nextTypeId;
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};
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asCArray<SListAdjuster*> listAdjusters;
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};
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#endif
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END_AS_NAMESPACE
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#endif // AS_RESTORE_H
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