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/**************************************************************
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*************************************************************/
#ifndef _SCANNER_HXX
#define _SCANNER_HXX
#include <tools/string.hxx>
#ifndef _SBERRORS_HXX
#include <basic/sberrors.hxx>
#endif
// Der Scanner ist stand-alone, d.h. er kann von ueberallher verwendet
// werden. Eine BASIC-Instanz ist fuer Fehlermeldungen notwendig. Ohne
// BASIC werden die Fehler nur gezaehlt. Auch ist Basic notwendig, wenn
// eine erweiterte SBX-Variable zur Erkennung von Datentypen etc. verwendet
// werden soll.
class StarBASIC;
class SbiScanner
{
::rtl::OUString aBuf; // Input-Puffer
::rtl::OUString aLine; // aktuelle Zeile
const sal_Unicode* pLine; // Pointer
const sal_Unicode* pSaveLine; // Merker fuer Line
protected:
String aSym; // Symbolpuffer
String aError; // Fehler-String
SbxDataType eScanType; // evtl. Datentyp
StarBASIC* pBasic; // Instanz fuer Fehler-Callbacks
double nVal; // numerischer Wert
short nCurCol1; // aktuelle Spalte 1
short nSavedCol1; // gerettete Spalte 1
short nCol; // aktuelle Spaltennummer
short nErrors; // Anzahl Fehler
short nColLock; // Lock-Zaehler fuer Col1
sal_Int32 nBufPos; // aktuelle Buffer-Pos
sal_uInt16 nLine; // aktuelle Zeile
sal_uInt16 nCol1, nCol2; // aktuelle 1. und 2. Spalte
sal_Bool bSymbol; // sal_True: Symbol gescannt
sal_Bool bNumber; // sal_True: Zahl gescannt
sal_Bool bSpaces; // sal_True: Whitespace vor Token
sal_Bool bErrors; // sal_True: Fehler generieren
sal_Bool bAbort; // sal_True: abbrechen
sal_Bool bHash; // sal_True: # eingelesen
sal_Bool bError; // sal_True: Fehler generieren
sal_Bool bUsedForHilite; // sal_True: Nutzung fuer Highlighting
sal_Bool bCompatible; // sal_True: OPTION Compatibl
sal_Bool bVBASupportOn; // sal_True: OPTION VBASupport 1 otherwise default False
sal_Bool bPrevLineExtentsComment; // sal_True: Previous line is comment and ends on "... _"
void GenError( SbError );
public:
SbiScanner( const ::rtl::OUString&, StarBASIC* = NULL );
~SbiScanner();
void EnableErrors() { bError = sal_False; }
sal_Bool IsHash() { return bHash; }
sal_Bool IsCompatible() { return bCompatible; }
void SetCompatible( bool b ) { bCompatible = b; } // #118206
sal_Bool IsVBASupportOn() { return bVBASupportOn; }
void SetVBASupportOn( bool b ) { bVBASupportOn = b; }
sal_Bool WhiteSpace() { return bSpaces; }
short GetErrors() { return nErrors; }
short GetLine() { return nLine; }
short GetCol1() { return nCol1; }
short GetCol2() { return nCol2; }
void SetCol1( short n ) { nCol1 = n; }
StarBASIC* GetBasic() { return pBasic; }
void SaveLine(void) { pSaveLine = pLine; }
void RestoreLine(void) { pLine = pSaveLine; }
void LockColumn();
void UnlockColumn();
sal_Bool DoesColonFollow();
sal_Bool NextSym(); // naechstes Symbol lesen
const String& GetSym() { return aSym; }
SbxDataType GetType() { return eScanType; }
double GetDbl() { return nVal; }
};
class LetterTable
{
bool IsLetterTab[256];
public:
LetterTable( void );
inline bool isLetter( sal_Unicode c )
{
bool bRet = (c < 256) ? IsLetterTab[c] : isLetterUnicode( c );
return bRet;
}
bool isLetterUnicode( sal_Unicode c );
};
class BasicSimpleCharClass
{
static LetterTable aLetterTable;
public:
static sal_Bool isAlpha( sal_Unicode c, bool bCompatible )
{
sal_Bool bRet = (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')
|| (bCompatible && aLetterTable.isLetter( c ));
return bRet;
}
static sal_Bool isDigit( sal_Unicode c )
{
sal_Bool bRet = (c >= '0' && c <= '9');
return bRet;
}
static sal_Bool isAlphaNumeric( sal_Unicode c, bool bCompatible )
{
sal_Bool bRet = isDigit( c ) || isAlpha( c, bCompatible );
return bRet;
}
};
#endif
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