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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* 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
*
* This file is part of OpenOffice.org.
*
* 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.
*
************************************************************************/
#ifndef _SCANNER_HXX
#define _SCANNER_HXX
#include <tools/string.hxx>
#include <basic/sberrors.hxx>
// The scanner is stand-alone, i. e. it can be used from everywhere.
// A BASIC-instance is necessary for error messages. Without BASIC
// the errors are only counted. Also the BASICC is necessary when an
// advanced SBX-variable shall be used for data type recognition etc.
class StarBASIC;
class SbiScanner
{
::rtl::OUString aBuf; // input buffer
::rtl::OUString aLine;
const sal_Unicode* pLine;
const sal_Unicode* pSaveLine;
protected:
String aSym;
String aError;
SbxDataType eScanType;
StarBASIC* pBasic; // instance for error callbacks
double nVal; // numeric value
short nCurCol1;
short nSavedCol1;
short nCol;
short nErrors;
short nColLock; // lock counter for Col1
sal_Int32 nBufPos;
sal_uInt16 nLine;
sal_uInt16 nCol1, nCol2;
sal_Bool bSymbol; // sal_True: symbol scanned
sal_Bool bNumber; // sal_True: number scanned
sal_Bool bSpaces; // sal_True: whitespace before token
sal_Bool bErrors; // sal_True: generate errors
sal_Bool bAbort;
sal_Bool bHash; // sal_True: # has been read in
sal_Bool bError; // sal_True: generate error
sal_Bool bUsedForHilite;
sal_Bool bCompatible; // sal_True: OPTION compatible
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();
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
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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