basic/source/inc/codegen.hxx

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  30
  31 #ifndef _CODEGEN_HXX
  32 #define _CODEGEN_HXX
  33
  34 class SbiImage;
  35 class SbiParser;
  36 class SbModule;
  37 #include "opcodes.hxx"
  38 #include "buffer.hxx"
  39
  40 class SbiCodeGen {                              // Code-Erzeugung:
  41     SbiParser* pParser;                 // fuer Fehlermeldungen, Line, Column etc.
  42     SbModule& rMod;                             // aktuelles Modul
  43     SbiBuffer aCode;                            // Code-Puffer
  44     short  nLine, nCol;                 // Zeile, Spalte fuer Stmnt-Befehl
  45     short  nForLevel;                   // #29955 for-Schleifen-Ebene
  46     BOOL bStmnt;                                // TRUE: Statement-Opcode liegt an
  47 public:
  48     SbiCodeGen( SbModule&, SbiParser*, short );
  49     SbiParser* GetParser() { return pParser; }
  50     UINT32 Gen( SbiOpcode );
  51     UINT32 Gen( SbiOpcode, UINT32 );
  52     UINT32 Gen( SbiOpcode, UINT32, UINT32 );
  53     void Patch( UINT32 o, UINT32 v ){ aCode.Patch( o, v ); }
  54     void BackChain( UINT32 off )        { aCode.Chain( off );  }
  55     void Statement();
  56     void GenStmnt();                    // evtl. Statement-Opcode erzeugen
  57     UINT32 GetPC();
  58     UINT32 GetOffset()                          { return GetPC() + 1; }
  59     SbModule& GetModule() { return rMod; }
  60     void Save();
  61
  62     // #29955 for-Schleifen-Ebene pflegen
  63     void IncForLevel( void ) { nForLevel++; }
  64     void DecForLevel( void ) { nForLevel--; }
  65
  66     static UINT32 calcNewOffSet( BYTE* pCode, UINT16 nOffset );
  67     static UINT16 calcLegacyOffSet( BYTE* pCode, UINT32 nOffset );
  68
  69 };
  70
  71 template < class T, class S >
  72 class PCodeBuffConvertor
  73 {
  74     T m_nSize; //
  75     BYTE* m_pStart;
  76     BYTE* m_pCnvtdBuf;
  77     S m_nCnvtdSize; //
  78
  79     //  Disable usual copying symantics and bodgy default ctor
  80     PCodeBuffConvertor();
  81     PCodeBuffConvertor(const PCodeBuffConvertor& );
  82     PCodeBuffConvertor& operator = ( const PCodeBuffConvertor& );
  83 public:
  84     PCodeBuffConvertor( BYTE* pCode, T nSize ): m_nSize( nSize ),  m_pStart( pCode ), m_pCnvtdBuf( NULL ), m_nCnvtdSize( 0 ){ convert(); }
  85     S GetSize(){ return m_nCnvtdSize; }
  86     void convert();
  87     // Caller owns the buffer returned
  88     BYTE* GetBuffer() { return m_pCnvtdBuf; }
  89 };
  90
  91 // #111897 PARAM_INFO flags start at 0x00010000 to not
  92 // conflict with DefaultId in SbxParamInfo::nUserData
  93 #define PARAM_INFO_PARAMARRAY   0x0010000
  94
  95 #endif