xref: /trunk/main/basic/source/inc/runtime.hxx (revision cdf0e10c4e3984b49a9502b011690b615761d4a3)

/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * Copyright 2000, 2010 Oracle and/or its affiliates.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
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 *
 * OpenOffice.org is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * only, as published by the Free Software Foundation.
 *
 * OpenOffice.org is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with OpenOffice.org.  If not, see
 * <http://www.openoffice.org/license.html>
 * for a copy of the LGPLv3 License.
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#ifndef _SBRUNTIME_HXX
#define _SBRUNTIME_HXX

#ifndef _SBX_HXX
#include <basic/sbx.hxx>
#endif

#include "sb.hxx"

// Define activates class UCBStream in iosys.cxx
#define _USE_UNO

#ifdef _USE_UNO
#include <rtl/ustring.hxx>
#include <com/sun/star/uno/Sequence.hxx>
#include <osl/file.hxx>
#include <rtl/math.hxx>
#include <i18npool/lang.h>

#include <vector>
#include <com/sun/star/lang/XComponent.hpp>
#include <com/sun/star/container/XEnumeration.hpp>
#include <unotools/localedatawrapper.hxx>

using namespace com::sun::star::uno;
using namespace com::sun::star::lang;
using namespace com::sun::star::container;


// Define activates old file implementation
// (only in non UCB case)
// #define _OLD_FILE_IMPL


//#include <sal/types.h>
//#include <rtl/byteseq.hxx>
//#include <rtl/ustring>


namespace basicEncoder
{

// TODO: Use exported functionality (code is copied from deamons2/ucb)
class AsciiEncoder
{
public:
    static ::rtl::OUString decodeUnoUrlParamValue(const rtl::OUString & rSource);
    //static ::rtl::OUString encodeUnoUrlParamValue(const rtl::OUString & rSource);
    //static ::rtl::ByteSequence decode(const ::rtl::OUString & string);
    //static ::rtl::OUString encode(const ::rtl::ByteSequence & bytes);
    //static void test();
};

}

#endif /* _USE_UNO */

class SbiInstance;                  // aktiver StarBASIC-Prozess
class SbiRuntime;                   // aktive StarBASIC-Prozedur-Instanz

struct SbiArgvStack;                // Argv stack element
struct SbiGosubStack;               // GOSUB stack element
class  SbiImage;                    // Code-Image
class  SbiIoSystem;                 // Dateisystem
class  SbiDdeControl;               // DDE-Steuerung
class  SbiDllMgr;                   // Aufrufe in DLLs
class  SvNumberFormatter;           // Zeit/Datumsfunktionen

enum ForType
{
    FOR_TO,
    FOR_EACH_ARRAY,
    FOR_EACH_COLLECTION,
    FOR_EACH_XENUMERATION
};

struct SbiForStack {                // for/next stack:
    SbiForStack*    pNext;          // Chain
    SbxVariableRef  refVar;         // loop variable
    SbxVariableRef  refEnd;         // end expression / for each: Array/BasicCollection object
    SbxVariableRef  refInc;         // increment expression

    // For each support
    ForType         eForType;
    sal_Int32           nCurCollectionIndex;
    sal_Int32*          pArrayCurIndices;
    sal_Int32*          pArrayLowerBounds;
    sal_Int32*          pArrayUpperBounds;
    Reference< XEnumeration > xEnumeration;

    SbiForStack( void )
        : pArrayCurIndices( NULL )
        , pArrayLowerBounds( NULL )
        , pArrayUpperBounds( NULL )
    {}
    ~SbiForStack()
    {
        delete[] pArrayCurIndices;
        delete[] pArrayLowerBounds;
        delete[] pArrayUpperBounds;
    }
};

struct SbiGosubStack {              // GOSUB-Stack:
    SbiGosubStack* pNext;           // Chain
    const sal_uInt8* pCode;             // Return-Pointer
    sal_uInt16 nStartForLvl;            // #118235: For Level in moment of gosub
};

#define MAXRECURSION 500            // max. 500 Rekursionen

#define Sb_ATTR_NORMAL      0x0000
#define Sb_ATTR_HIDDEN      0x0002
#define Sb_ATTR_SYSTEM      0x0004
#define Sb_ATTR_VOLUME      0x0008
#define Sb_ATTR_DIRECTORY   0x0010
#define Sb_ATTR_ARCHIVE     0x0020


class Dir;
class WildCard;

class SbiRTLData
{
public:

#ifdef _OLD_FILE_IMPL
    Dir*    pDir;
#else
    ::osl::Directory* pDir;
#endif
    sal_Int16   nDirFlags;
    short   nCurDirPos;

    String sFullNameToBeChecked;
    WildCard* pWildCard;

#ifdef _USE_UNO
    Sequence< ::rtl::OUString > aDirSeq;
#endif /* _USE_UNO */

    SbiRTLData();
    ~SbiRTLData();
};

// Die Instanz entspricht einem laufenden StarBASIC. Mehrere gleichzeitig
// laufende BASICs werden ueber verkettete Instanzen verwaltet. Hier liegen
// alle Daten, die nur leben, wenn BASIC auch lebt, wie z.B. das I/O-System.

typedef ::std::vector
<
    ::com::sun::star::uno::Reference< ::com::sun::star::lang::XComponent >
>
ComponentVector_t;


class SbiInstance
{
    friend class SbiRuntime;

    SbiRTLData      aRTLData;

    SbiIoSystem*    pIosys;         // Dateisystem
    SbiDdeControl*  pDdeCtrl;       // DDE
    SbiDllMgr*      pDllMgr;        // DLL-Calls (DECLARE)
    StarBASIC*      pBasic;
    SvNumberFormatter* pNumberFormatter;
    LanguageType    meFormatterLangType;
    DateFormat      meFormatterDateFormat;
    sal_uInt32      nStdDateIdx, nStdTimeIdx, nStdDateTimeIdx;

    SbError         nErr;           // aktueller Fehlercode
    String          aErrorMsg;      // letzte Error-Message fuer $ARG
    sal_uInt16          nErl;           // aktuelle Fehlerzeile
    sal_Bool            bReschedule;    // Flag: sal_True = Reschedule in Hauptschleife
    sal_Bool            bCompatibility; // Flag: sal_True = VBA runtime compatibility mode

    ComponentVector_t ComponentVector;

public:
    SbiRuntime*  pRun;              // Call-Stack
    SbiInstance* pNext;             // Instanzen-Chain

    // #31460 Neues Konzept fuer StepInto/Over/Out,
    // Erklaerung siehe runtime.cxx bei SbiInstance::CalcBreakCallLevel()
    sal_uInt16  nCallLvl;               // Call-Level (wg. Rekursion)
    sal_uInt16  nBreakCallLvl;          // Call-Level zum Anhalten
    void    CalcBreakCallLevel( sal_uInt16 nFlags );    // Gemaess Flags setzen

    SbiInstance( StarBASIC* );
   ~SbiInstance();

    void Error( SbError );                      // trappable Error
    void Error( SbError, const String& rMsg );  // trappable Error mit Message
    void ErrorVB( sal_Int32 nVBNumber, const String& rMsg );
    void setErrorVB( sal_Int32 nVBNumber, const String& rMsg );
    void FatalError( SbError );                 // non-trappable Error
    void FatalError( SbError, const String& );  // non-trappable Error
    void Abort();                               // Abbruch mit aktuellem Fehlercode

    void    Stop();
    SbError GetErr()                { return nErr; }
    String  GetErrorMsg()           { return aErrorMsg; }
    xub_StrLen GetErl()             { return nErl; }
    void    EnableReschedule( sal_Bool bEnable ) { bReschedule = bEnable; }
    sal_Bool    IsReschedule( void ) { return bReschedule; }
    void    EnableCompatibility( sal_Bool bEnable ) { bCompatibility = bEnable; }
    sal_Bool    IsCompatibility( void ) { return bCompatibility; }

    ComponentVector_t& getComponentVector( void )  { return ComponentVector; }

    SbMethod* GetCaller( sal_uInt16 );
    SbModule* GetActiveModule();
    SbxArray* GetLocals( SbMethod* );

    SbiIoSystem* GetIoSystem() { return pIosys; }
    SbiDdeControl* GetDdeControl() { return pDdeCtrl; }
    StarBASIC* GetBasic( void ) { return pBasic; }
    SbiDllMgr* GetDllMgr();
    SbiRTLData* GetRTLData() const { return (SbiRTLData*)&aRTLData; }

    SvNumberFormatter* GetNumberFormatter();
    sal_uInt32 GetStdDateIdx() const { return nStdDateIdx; }
    sal_uInt32 GetStdTimeIdx() const { return nStdTimeIdx; }
    sal_uInt32 GetStdDateTimeIdx() const { return nStdDateTimeIdx; }

    // #39629# NumberFormatter auch statisch anbieten
    static void PrepareNumberFormatter( SvNumberFormatter*& rpNumberFormatter,
        sal_uInt32 &rnStdDateIdx, sal_uInt32 &rnStdTimeIdx, sal_uInt32 &rnStdDateTimeIdx,
        LanguageType* peFormatterLangType=NULL, DateFormat* peFormatterDateFormat=NULL );
};

SbiIoSystem* SbGetIoSystem();       // das aktuelle I/O-System


// Verkettbare Items, um Referenzen temporaer zu halten
struct RefSaveItem
{
    SbxVariableRef xRef;
    RefSaveItem* pNext;

    RefSaveItem() { pNext = NULL; }
};


// Eine Instanz dieser Klasse wird fuer jedes ausgefuehrte Unterprogramm
// aufgesetzt. Diese Instanz ist das Herz der BASIC-Maschine und enthaelt
// nur lokale Daten.

class SbiRuntime
{
    friend void SbRtl_CallByName( StarBASIC* pBasic, SbxArray& rPar, sal_Bool bWrite );

    typedef void( SbiRuntime::*pStep0 )();
    typedef void( SbiRuntime::*pStep1 )( sal_uInt32 nOp1 );
    typedef void( SbiRuntime::*pStep2 )( sal_uInt32 nOp1, sal_uInt32 nOp2 );
    static pStep0 aStep0[];         // Opcode-Tabelle Gruppe 0
    static pStep1 aStep1[];         // Opcode-Tabelle Gruppe 1
    static pStep2 aStep2[];         // Opcode-Tabelle Gruppe 2

    StarBASIC&    rBasic;           // StarBASIC-Instanz
    SbiInstance*   pInst;           // aktiver Thread
    SbModule*     pMod;             // aktuelles Modul
    SbMethod*     pMeth;            // Methoden-Instanz
    SbiIoSystem*   pIosys;          // I/O-System
    const SbiImage* pImg;           // Code-Image
    SbxArrayRef   refExprStk;       // expression stack
    SbxArrayRef   refCaseStk;       // CASE expression stack
    SbxArrayRef   refRedimpArray;   // Array saved to use for REDIM PRESERVE
    SbxVariableRef xDummyVar;       // Ersatz fuer nicht gefundene Variablen
    SbiArgvStack*  pArgvStk;        // ARGV-Stack
    SbiGosubStack* pGosubStk;       // GOSUB stack
    SbiForStack*   pForStk;         // FOR/NEXT-Stack
    sal_uInt16        nExprLvl;         // Tiefe des Expr-Stacks
    sal_uInt16        nGosubLvl;        // Zum Vermeiden von Tot-Rekursionen
    sal_uInt16        nForLvl;          // #118235: Maintain for level
    const sal_uInt8*   pCode;            // aktueller Code-Pointer
    const sal_uInt8*   pStmnt;           // Beginn des lezten Statements
    const sal_uInt8*   pError;           // Adresse des aktuellen Error-Handlers
    const sal_uInt8*   pRestart;         // Restart-Adresse
    const sal_uInt8*   pErrCode;         // Restart-Adresse RESUME NEXT
    const sal_uInt8*   pErrStmnt;        // Restart-Adresse RESUMT 0
    String        aLibName;         // Lib-Name fuer Declare-Call
    SbxArrayRef   refParams;        // aktuelle Prozedur-Parameter
    SbxArrayRef   refLocals;        // lokale Variable
    SbxArrayRef   refArgv;          // aktueller Argv
    // AB, 28.3.2000 #74254, Ein refSaveObj reicht nicht! Neu: pRefSaveList (s.u.)
    //SbxVariableRef refSaveObj;      // #56368 Bei StepElem Referenz sichern
    short         nArgc;            // aktueller Argc
    sal_Bool          bRun;             // sal_True: Programm ist aktiv
    sal_Bool          bError;           // sal_True: Fehler behandeln
    sal_Bool          bInError;         // sal_True: in einem Fehler-Handler
    sal_Bool          bBlocked;         // sal_True: blocked by next call level, #i48868
    sal_Bool          bVBAEnabled;
    sal_uInt16        nFlags;           // Debugging-Flags
    SbError       nError;           // letzter Fehler
    sal_uInt16        nOps;             // Opcode-Zaehler
    sal_uInt32    m_nLastTime;

    RefSaveItem*  pRefSaveList;     // #74254 Temporaere Referenzen sichern
    RefSaveItem*  pItemStoreList;   // Unbenutzte Items aufbewahren
    void SaveRef( SbxVariable* pVar )
    {
        RefSaveItem* pItem = pItemStoreList;
        if( pItem )
            pItemStoreList = pItem->pNext;
        else
            pItem = new RefSaveItem();
        pItem->pNext = pRefSaveList;
        pItem->xRef = pVar;
        pRefSaveList = pItem;
    }
    void ClearRefs( void )
    {
        while( pRefSaveList )
        {
            RefSaveItem* pToClearItem = pRefSaveList;
            pRefSaveList = pToClearItem->pNext;
            pToClearItem->xRef = NULL;
            pToClearItem->pNext = pItemStoreList;
            pItemStoreList = pToClearItem;
        }
    }

    SbxVariable* FindElement
    ( SbxObject* pObj, sal_uInt32 nOp1, sal_uInt32 nOp2, SbError, sal_Bool bLocal, sal_Bool bStatic = sal_False );
    void SetupArgs( SbxVariable*, sal_uInt32 );
    SbxVariable* CheckArray( SbxVariable* );

    void PushVar( SbxVariable* );   // Variable push
    SbxVariableRef PopVar();          // Variable pop
    SbxVariable* GetTOS( short=0 ); // Variable vom TOS holen
    void TOSMakeTemp();             // TOS in temp. Variable wandeln
    sal_Bool ClearExprStack();          // Expr-Stack freigeben

    void PushGosub( const sal_uInt8* );  // GOSUB-Element push
    void PopGosub();                // GOSUB-Element pop
    void ClearGosubStack();         // GOSUB-Stack freigeben

    void PushArgv();                // Argv-Element push
    void PopArgv();                 // Argv-Element pop
    void ClearArgvStack();          // Argv-Stack freigeben

    void PushFor();                 // For-Element push
    void PushForEach();             // For-Each-Element push
    void PopFor();                  // For-Element pop
    void ClearForStack();           // For-Stack freigeben

    void StepArith( SbxOperator );  // arithmetische Verknuepfungen
    void StepUnary( SbxOperator );  // unaere Verknuepfungen
    void StepCompare( SbxOperator );// Vergleiche

    void SetParameters( SbxArray* );// Parameter uebernehmen

    // MUSS NOCH IMPLEMENTIERT WERDEN
    void DllCall( const String&, const String&, SbxArray*, SbxDataType, sal_Bool );

    // #56204 DIM-Funktionalitaet in Hilfsmethode auslagern (step0.cxx)
    void DimImpl( SbxVariableRef refVar );

    // #115829
    bool implIsClass( SbxObject* pObj, const String& aClass );

    void StepSETCLASS_impl( sal_uInt32 nOp1, bool bHandleDflt = false );

    // Die nachfolgenden Routinen werden vom Single Stepper
    // gerufen und implementieren die einzelnen Opcodes
    void StepNOP(),     StepEXP(),      StepMUL(),      StepDIV();
    void StepMOD(),     StepPLUS(),     StepMINUS(),    StepNEG();
    void StepEQ(),      StepNE(),       StepLT(),       StepGT();
    void StepLE(),      StepGE(),       StepIDIV(),     StepAND();
    void StepOR(),      StepXOR(),      StepEQV(),      StepIMP();
    void StepNOT(),     StepCAT(),      StepLIKE(),     StepIS();
    void StepCLONE(),   StepOLDBASED(), StepARGC();
    void StepARGV(),    StepINPUT(),    StepLINPUT(),   StepSTOP();
    void StepGET(),     StepSET(),  StepVBASET(),   StepPUT(),      StepPUTC();
    void StepSET_Impl( SbxVariableRef& refVal, SbxVariableRef& refVar, bool bDefaultHandling = false );
    void StepDIM(),     StepREDIM(),    StepREDIMP(),   StepERASE();
    void StepINITFOR(), StepNEXT(),     StepERROR(),    StepINITFOREACH();
    void StepCASE(),    StepENDCASE(),  StepSTDERROR();
    void StepNOERROR(), StepCHANNEL(),  StepCHANNEL0(), StepPRINT();
    void StepPRINTF(),  StepWRITE(),    StepRENAME(),   StepPROMPT();
    void StepRESTART(), StepEMPTY(),    StepLEAVE();
    void StepLSET(),    StepRSET(),     StepREDIMP_ERASE(),     StepERASE_CLEAR();
    void StepARRAYACCESS(), StepBYVAL();
    // Alle Opcodes mit einem Operanden
    void StepLOADNC( sal_uInt32 ),  StepLOADSC( sal_uInt32 ),   StepLOADI( sal_uInt32 );
    void StepARGN( sal_uInt32 ),    StepBASED( sal_uInt32 ),    StepPAD( sal_uInt32 );
    void StepJUMP( sal_uInt32 ),    StepJUMPT( sal_uInt32 );
    void StepJUMPF( sal_uInt32 ),   StepONJUMP( sal_uInt32 );
    void StepGOSUB( sal_uInt32 ),   StepRETURN( sal_uInt32 );
    void StepTESTFOR( sal_uInt32 ), StepCASETO( sal_uInt32 ),   StepERRHDL( sal_uInt32 );
    void StepRESUME( sal_uInt32 ),  StepSETCLASS( sal_uInt32 ), StepVBASETCLASS( sal_uInt32 ),  StepTESTCLASS( sal_uInt32 ), StepLIB( sal_uInt32 );
    bool checkClass_Impl( const SbxVariableRef& refVal, const String& aClass, bool bRaiseErrors, bool bDefault = true );
    void StepCLOSE( sal_uInt32 ),   StepPRCHAR( sal_uInt32 ),   StepARGTYP( sal_uInt32 );
    // Alle Opcodes mit zwei Operanden
    void StepRTL( sal_uInt32, sal_uInt32 ),     StepPUBLIC( sal_uInt32, sal_uInt32 ),   StepPUBLIC_P( sal_uInt32, sal_uInt32 );
    void StepPUBLIC_Impl( sal_uInt32, sal_uInt32, bool bUsedForClassModule );
    void StepFIND_Impl( SbxObject* pObj, sal_uInt32 nOp1, sal_uInt32 nOp2, SbError, sal_Bool bLocal, sal_Bool bStatic = sal_False );
    void StepFIND( sal_uInt32, sal_uInt32 ),    StepELEM( sal_uInt32, sal_uInt32 );
    void StepGLOBAL( sal_uInt32, sal_uInt32 ),  StepLOCAL( sal_uInt32, sal_uInt32 );
    void StepPARAM( sal_uInt32, sal_uInt32),    StepCREATE( sal_uInt32, sal_uInt32 );
    void StepCALL( sal_uInt32, sal_uInt32 ),    StepCALLC( sal_uInt32, sal_uInt32 );
    void StepCASEIS( sal_uInt32, sal_uInt32 ),  StepSTMNT( sal_uInt32, sal_uInt32 );
    SbxVariable* StepSTATIC_Impl( String& aName, SbxDataType& t );
    void StepOPEN( sal_uInt32, sal_uInt32 ),    StepSTATIC( sal_uInt32, sal_uInt32 );
    void StepTCREATE(sal_uInt32,sal_uInt32),    StepDCREATE(sal_uInt32,sal_uInt32);
    void StepGLOBAL_P( sal_uInt32, sal_uInt32 ),StepFIND_G( sal_uInt32, sal_uInt32 );
    void StepDCREATE_REDIMP(sal_uInt32,sal_uInt32), StepDCREATE_IMPL(sal_uInt32,sal_uInt32);
    void StepFIND_CM( sal_uInt32, sal_uInt32 );
    void StepFIND_STATIC( sal_uInt32, sal_uInt32 );
    void implHandleSbxFlags( SbxVariable* pVar, SbxDataType t, sal_uInt32 nOp2 );
public:
    void          SetVBAEnabled( bool bEnabled );
    sal_uInt16      GetImageFlag( sal_uInt16 n ) const;
    sal_uInt16      GetBase();
    xub_StrLen  nLine,nCol1,nCol2;  // aktuelle Zeile, Spaltenbereich
    SbiRuntime* pNext;               // Stack-Chain

    SbiRuntime( SbModule*, SbMethod*, sal_uInt32 );
   ~SbiRuntime();
    void Error( SbError, bool bVBATranslationAlreadyDone = false );     // Fehler setzen, falls != 0
    void Error( SbError, const String& );       // Fehler setzen, falls != 0
    void FatalError( SbError );                 // Fehlerbehandlung=Standard, Fehler setzen
    void FatalError( SbError, const String& );  // Fehlerbehandlung=Standard, Fehler setzen
    static sal_Int32 translateErrorToVba( SbError nError, String& rMsg );
    void DumpPCode();
    sal_Bool Step();                    // Einzelschritt (ein Opcode)
    void Stop()            { bRun = sal_False;   }
    sal_Bool IsRun()           { return bRun;    }
    void block( void )     { bBlocked = sal_True; }
    void unblock( void )   { bBlocked = sal_False; }
    SbMethod* GetMethod()  { return pMeth;   }
    SbModule* GetModule()  { return pMod;    }
    sal_uInt16 GetDebugFlags() { return nFlags;  }
    void SetDebugFlags( sal_uInt16 nFl ) { nFlags = nFl;  }
    SbMethod* GetCaller();
    SbxArray* GetLocals();
    SbxArray* GetParams();

    SbiForStack* FindForStackItemForCollection( class BasicCollection* pCollection );

    SbxBase* FindElementExtern( const String& rName );
    static bool isVBAEnabled();

};

inline void checkArithmeticOverflow( double d )
{
    if( !::rtl::math::isFinite( d ) )
        StarBASIC::Error( SbERR_MATH_OVERFLOW );
}

inline void checkArithmeticOverflow( SbxVariable* pVar )
{
    if( pVar->GetType() == SbxDOUBLE )
    {
        double d = pVar->GetDouble();
        checkArithmeticOverflow( d );
    }
}

// Hilfsfunktion, um aktives Basic zu finden
StarBASIC* GetCurrentBasic( StarBASIC* pRTBasic );

// Get information if security restrictions should be
// used (File IO based on UCB, no RTL function SHELL
// no DDE functionality, no DLLCALL) in basic because
// of portal "virtual" users (portal user != UNIX user)
// (Implemented in iosys.cxx)
sal_Bool needSecurityRestrictions( void );

// Returns sal_True if UNO is available, otherwise the old
// file system implementation has to be used
// (Implemented in iosys.cxx)
sal_Bool hasUno( void );

// Converts possibly relative paths to absolute paths
// according to the setting done by ChDir/ChDrive
// (Implemented in methods.cxx)
String getFullPath( const String& aRelPath );

// Sets (virtual) current path for UCB file access
void implChDir( const String& aDir );

// Sets (virtual) current drive for UCB file access
void implChDrive( const String& aDrive );

// Returns (virtual) current path for UCB file access
String implGetCurDir( void );

// Implementation of StepRENAME with UCB
// (Implemented in methods.cxx, so step0.cxx
// has not to be infected with UNO)
void implStepRenameUCB( const String& aSource, const String& aDest );

//*** OSL file access ***
// #87427 OSL need File URLs, so map to getFullPath
inline String getFullPathUNC( const String& aRelPath )
{
    return getFullPath( aRelPath );
}
void implStepRenameOSL( const String& aSource, const String& aDest );
bool IsBaseIndexOne();

#endif