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authorJens-Heiner Rechtien <hr@openoffice.org>2000-09-18 15:18:56 +0000
committerJens-Heiner Rechtien <hr@openoffice.org>2000-09-18 15:18:56 +0000
commitc25ec0608a167bcf1d891043f02273761c351701 (patch)
tree32c3e19f0b663e37ad1910e8fddeac200ad3856d /basic/source/comp/scanner.cxx
initial import
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+/*************************************************************************
+ *
+ * $RCSfile: scanner.cxx,v $
+ *
+ * $Revision: 1.1.1.1 $
+ *
+ * last change: $Author: hr $ $Date: 2000-09-18 16:12:10 $
+ *
+ * The Contents of this file are made available subject to the terms of
+ * either of the following licenses
+ *
+ * - GNU Lesser General Public License Version 2.1
+ * - Sun Industry Standards Source License Version 1.1
+ *
+ * Sun Microsystems Inc., October, 2000
+ *
+ * GNU Lesser General Public License Version 2.1
+ * =============================================
+ * Copyright 2000 by Sun Microsystems, Inc.
+ * 901 San Antonio Road, Palo Alto, CA 94303, USA
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software Foundation.
+ *
+ * This library 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 for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ *
+ * Sun Industry Standards Source License Version 1.1
+ * =================================================
+ * The contents of this file are subject to the Sun Industry Standards
+ * Source License Version 1.1 (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.openoffice.org/license.html.
+ *
+ * Software provided under this License is provided on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
+ * WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
+ * MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
+ * See the License for the specific provisions governing your rights and
+ * obligations concerning the Software.
+ *
+ * The Initial Developer of the Original Code is: Sun Microsystems, Inc.
+ *
+ * Copyright: 2000 by Sun Microsystems, Inc.
+ *
+ * All Rights Reserved.
+ *
+ * Contributor(s): _______________________________________
+ *
+ *
+ ************************************************************************/
+
+#include "sbcomp.hxx"
+#pragma hdrstop
+#include <ctype.h>
+#include <stdio.h> // sprintf()
+#include <string.h>
+#if defined (ICC) || defined (WTC) || defined(__powerc) || defined ( MAC ) || defined UNX
+#include <stdlib.h>
+#else
+#include <math.h> // atof()
+#endif
+#ifndef _SOLMATH_HXX //autogen wg. SolarMath
+#include <tools/solmath.hxx>
+#endif
+#ifndef _TOOLS_INTN_HXX
+#include <tools/intn.hxx>
+#endif
+
+#include "segmentc.hxx"
+#pragma SW_SEGMENT_CLASS( SBCOMP, SBCOMP_CODE )
+
+SbiScanner::SbiScanner( const String& rBuf, StarBASIC* p ) : aBuf( rBuf )
+{
+ pBasic = p;
+ pLine = NULL;
+ nVal = 0;
+ eScanType = SbxVARIANT;
+ nErrors =
+ nBufPos =
+ nCurCol1 =
+ nSavedCol1 =
+ nColLock =
+ nLine =
+ nCol1 =
+ nCol2 =
+ nCol = 0;
+ bError =
+ bAbort =
+ bSpaces =
+ bNumber =
+ bSymbol =
+ bUsedForHilite = FALSE;
+ bHash =
+ bErrors = TRUE;
+}
+
+SbiScanner::~SbiScanner()
+{}
+
+void SbiScanner::LockColumn()
+{
+ if( !nColLock++ )
+ nSavedCol1 = nCol1;
+}
+
+void SbiScanner::UnlockColumn()
+{
+ if( nColLock )
+ nColLock--;
+}
+
+void SbiScanner::GenError( SbError code )
+{
+ if( !bError && bErrors )
+ {
+ BOOL bRes = TRUE;
+ // Nur einen Fehler pro Statement reporten
+ bError = TRUE;
+ if( pBasic )
+ {
+ // Falls EXPECTED oder UNEXPECTED kommen sollte, bezieht es sich
+ // immer auf das letzte Token, also die Col1 uebernehmen
+ USHORT nc = nColLock ? nSavedCol1 : nCol1;
+ switch( code )
+ {
+ case SbERR_EXPECTED:
+ case SbERR_UNEXPECTED:
+ case SbERR_SYMBOL_EXPECTED:
+ case SbERR_LABEL_EXPECTED:
+ nc = nCol1;
+ if( nc > nCol2 ) nCol2 = nc;
+ break;
+ }
+ bRes = pBasic->CError( code, aError, nLine, nc, nCol2 );
+ }
+ bAbort |= !bRes |
+ ( code == SbERR_NO_MEMORY || code == SbERR_PROG_TOO_LARGE );
+ }
+ if( bErrors )
+ nErrors++;
+}
+
+// Falls sofort ein Doppelpunkt folgt, wird TRUE zurueckgeliefert.
+// Wird von SbiTokenizer::MayBeLabel() verwendet, um einen Label zu erkennen
+
+BOOL SbiScanner::DoesColonFollow()
+{
+ if( pLine && *pLine == ':' )
+ {
+ pLine++; nCol++; return TRUE;
+ }
+ else return FALSE;
+}
+
+// Testen auf ein legales Suffix
+
+static SbxDataType GetSuffixType( sal_Unicode c )
+{
+ static String aSuffixesStr = String::CreateFromAscii( "%&!#@ $" );
+ if( c )
+ {
+ sal_uInt32 n = aSuffixesStr.Search( c );
+ if( STRING_NOTFOUND != n && c != ' ' )
+ return SbxDataType( (USHORT) n + SbxINTEGER );
+ }
+ return SbxVARIANT;
+}
+
+// Einlesen des naechsten Symbols in die Variablen aSym, nVal und eType
+// Returnwert ist FALSE bei EOF oder Fehlern
+#define BUF_SIZE 80
+
+BOOL SbiScanner::NextSym()
+{
+ static International aEnglischIntn( LANGUAGE_ENGLISH_US, LANGUAGE_ENGLISH_US );
+
+ // Fuer den EOLN-Fall merken
+ USHORT nOldLine = nLine;
+ USHORT nOldCol1 = nCol1;
+ USHORT nOldCol2 = nCol2;
+ sal_Unicode buf[ BUF_SIZE ], *p = buf;
+ bHash = FALSE;
+
+ eScanType = SbxVARIANT;
+ aSym.Erase();
+ bSymbol =
+ bNumber = bSpaces = FALSE;
+
+ // Zeile einlesen?
+ if( !pLine )
+ {
+ USHORT n = nBufPos;
+ USHORT nLen = aBuf.Len();
+ if( nBufPos >= nLen )
+ return FALSE;
+ const sal_Unicode* p = aBuf.GetBuffer();
+ p += n;
+ while( ( n < nLen ) && ( *p != '\n' ) && ( *p != '\r' ) )
+ p++, n++;
+ aLine = aBuf.Copy( nBufPos, n - nBufPos );
+ if( ( n < nLen ) && *p == '\r' && *( p+1 ) == '\n' )
+ n += 2;
+ else
+ n++;
+ nBufPos = n;
+ pLine = aLine.GetBuffer();
+ nOldLine = ++nLine;
+ nCol = nCol1 = nCol2 = nOldCol1 = nOldCol2 = 0;
+ nColLock = 0;
+ }
+
+ // Leerstellen weg:
+ while( *pLine && ( *pLine == ' ' ) || ( *pLine == '\t' ) || ( *pLine == '\f' ) )
+ pLine++, nCol++, bSpaces = TRUE;
+
+ nCol1 = nCol;
+
+ // nur Leerzeile?
+ if( !*pLine ) goto eoln;
+
+ if( *pLine == '#' ) pLine++, nCol++, bHash = TRUE;
+
+ // Symbol? Dann Zeichen kopieren.
+ if( isalpha( *pLine & 0xFF ) || *pLine == '_' )
+ {
+ // Wenn nach '_' nichts kommt, ist es ein Zeilenabschluss!
+ if( *pLine == '_' && !*(pLine+1) )
+ { pLine++;
+ goto eoln; }
+ bSymbol = TRUE;
+ short n = nCol;
+ for ( ; (isalnum( *pLine & 0xFF ) || ( *pLine == '_' ) ); pLine++ )
+ nCol++;
+ aSym = aLine.Copy( n, nCol - n );
+ // Abschliessendes '_' durch Space ersetzen, wenn Zeilenende folgt
+ // (sonst falsche Zeilenfortsetzung)
+ if( !bUsedForHilite && !*pLine && *(pLine-1) == '_' )
+ *((sal_Unicode*)(pLine-1)) = ' '; // cast wegen const
+ // Typkennung?
+ // Das Ausrufezeichen bitte nicht testen, wenn
+ // danach noch ein Symbol anschliesst
+ else if( *pLine != '!' || !isalpha( pLine[ 1 ] & 0xFF ) )
+ {
+ SbxDataType t = GetSuffixType( *pLine );
+ if( t != SbxVARIANT )
+ {
+ eScanType = t;
+ pLine++;
+ nCol++;
+#ifdef VBSCRIPT_TEST
+ nCol2 = nCol;
+ GenError( ERRCODE_BASIC_NOT_IN_VBSCRIPT );
+#endif
+ }
+ }
+ }
+
+ // Zahl? Dann einlesen und konvertieren.
+ else if( isdigit( *pLine & 0xFF )
+ || ( *pLine == '.' && isdigit( *(pLine+1) & 0xFF ) ) )
+ {
+ short exp = 0;
+ short comma = 0;
+ short ndig = 0;
+ short ncdig = 0;
+ eScanType = SbxDOUBLE;
+ BOOL bBufOverflow = FALSE;
+ while( strchr( "0123456789.DEde", *pLine ) && *pLine )
+ {
+ // AB 4.1.1996: Buffer voll? -> leer weiter scannen
+ if( (p-buf) == (BUF_SIZE-1) )
+ {
+ bBufOverflow = TRUE;
+ pLine++, nCol++;
+ continue;
+ }
+ // Komma oder Exponent?
+ if( *pLine == '.' )
+ {
+ if( ++comma > 1 )
+ {
+ pLine++; nCol++; continue;
+ }
+ else *p++ = *pLine++, nCol++;
+ }
+ else if( strchr( "DdEe", *pLine ) )
+ {
+ if (++exp > 1)
+ {
+ pLine++; nCol++; continue;
+ }
+// if( toupper( *pLine ) == 'D' )
+// eScanType = SbxDOUBLE;
+ *p++ = 'E'; pLine++; nCol++;
+ // Vorzeichen hinter Exponent?
+ if( *pLine == '+' )
+ pLine++, nCol++;
+ else
+ if( *pLine == '-' )
+ *p++ = *pLine++, nCol++;
+ }
+ else
+ {
+ *p++ = *pLine++, nCol++;
+ if( comma && !exp ) ncdig++;
+ }
+ if (!exp) ndig++;
+ }
+ *p = 0;
+ aSym = p; bNumber = TRUE;
+ // Komma, Exponent mehrfach vorhanden?
+ if( comma > 1 || exp > 1 )
+ { aError = '.';
+ GenError( SbERR_BAD_CHAR_IN_NUMBER ); }
+
+ // #57844 Lokalisierte Funktion benutzen
+ int nErrno;
+ nVal = SolarMath::StringToDouble( buf, aEnglischIntn, nErrno );
+ // ATL: nVal = atof( buf );
+
+ ndig -= comma;
+ if( !comma && !exp )
+ {
+ if( nVal >= SbxMININT && nVal <= SbxMAXINT )
+ eScanType = SbxINTEGER;
+ else
+ if( nVal >= SbxMINLNG && nVal <= SbxMAXLNG )
+ eScanType = SbxLONG;
+ }
+ if( bBufOverflow )
+ GenError( SbERR_MATH_OVERFLOW );
+ // zu viele Zahlen fuer SINGLE?
+// if (ndig > 15 || ncdig > 6)
+// eScanType = SbxDOUBLE;
+// else
+// if( nVal > SbxMAXSNG || nVal < SbxMINSNG )
+// eScanType = SbxDOUBLE;
+
+ // Typkennung?
+ SbxDataType t = GetSuffixType( *pLine );
+ if( t != SbxVARIANT )
+ {
+ eScanType = t;
+ pLine++;
+ nCol++;
+#ifdef VBSCRIPT_TEST
+ nCol2 = nCol;
+ GenError( ERRCODE_BASIC_NOT_IN_VBSCRIPT );
+#endif
+ }
+ }
+
+ // Hex/Oktalzahl? Einlesen und konvertieren:
+ else if( *pLine == '&' )
+ {
+ pLine++; nCol++;
+ sal_Unicode cmp1[] = { '0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F' };
+ sal_Unicode cmp2[] = { '0', '1', '2', '3', '4', '5', '6', '7' };
+ sal_Unicode *cmp = cmp1;
+ //char *cmp = "0123456789ABCDEF";
+ sal_Unicode base = 16;
+ sal_Unicode ndig = 8;
+ sal_Unicode xch = *pLine++ & 0xFF; nCol++;
+ switch( toupper( xch ) )
+ {
+ case 'O':
+ cmp = cmp2; base = 8; ndig = 11; break;
+ //cmp = "01234567"; base = 8; ndig = 11; break;
+ case 'H':
+ break;
+ default :
+ // Wird als Operator angesehen
+ pLine--; nCol--; nCol1 = nCol-1; aSym = '&'; return SYMBOL;
+ }
+ bNumber = TRUE;
+ long l = 0;
+ int i;
+ BOOL bBufOverflow = FALSE;
+ while( isalnum( *pLine & 0xFF ) )
+ {
+ sal_Unicode ch = toupper( *pLine & 0xFF );
+ pLine++; nCol++;
+ // AB 4.1.1996: Buffer voll, leer weiter scannen
+ if( (p-buf) == (BUF_SIZE-1) )
+ bBufOverflow = TRUE;
+ else if( String( cmp ).Search( ch ) != STRING_NOTFOUND )
+ //else if( strchr( cmp, ch ) )
+ *p++ = ch;
+ else
+ {
+ aError = ch;
+ GenError( SbERR_BAD_CHAR_IN_NUMBER );
+ }
+ }
+ *p = 0;
+ for( p = buf; *p; p++ )
+ {
+ i = (*p & 0xFF) - '0';
+ if( i > 9 ) i -= 7;
+ l = ( l * base ) + i;
+ if( !ndig-- )
+ {
+ GenError( SbERR_MATH_OVERFLOW ); break;
+ }
+ }
+ if( *pLine == '&' ) pLine++, nCol++;
+ nVal = (double) l;
+ eScanType = ( l >= SbxMININT && l <= SbxMAXINT ) ? SbxINTEGER : SbxLONG;
+ if( bBufOverflow )
+ GenError( SbERR_MATH_OVERFLOW );
+ }
+
+ // Strings:
+ else if( *pLine == '"' || *pLine == '[' )
+ {
+ sal_Unicode cSep = *pLine;
+ if( cSep == '[' )
+ bSymbol = TRUE, cSep = ']';
+ short n = nCol+1;
+ while( *pLine )
+ {
+ do pLine++, nCol++;
+ while( *pLine && ( *pLine != cSep ) );
+ if( *pLine == cSep )
+ {
+ pLine++; nCol++;
+ if( *pLine != cSep || cSep == ']' ) break;
+ } else aError = cSep, GenError( SbERR_EXPECTED );
+ }
+ aSym = aLine.Copy( n, nCol - n - 1 );
+ // Doppelte Stringbegrenzer raus
+ String s( cSep );
+ s += cSep;
+ USHORT nIdx;
+ do {
+ nIdx = aSym.Search( s );
+ aSym.Erase( nIdx, 1 );
+ } while( nIdx != STRING_NOTFOUND );
+ if( cSep != ']' )
+ eScanType = ( cSep == '#' ) ? SbxDATE : SbxSTRING;
+ }
+ // ungueltige Zeichen:
+ else if( ( *pLine & 0xFF ) >= 0x7F )
+ {
+ GenError( SbERR_SYNTAX ); pLine++; nCol++;
+ }
+ // andere Gruppen:
+ else
+ {
+ short n = 1;
+ switch( *pLine++ )
+ {
+ case '<': if( *pLine == '>' || *pLine == '=' ) n = 2; break;
+ case '>': if( *pLine == '=' ) n = 2; break;
+ case ':': if( *pLine == '=' ) n = 2; break;
+ }
+ aSym = aLine.Copy( nCol, n );
+ pLine += n-1; nCol += n;
+ }
+
+ nCol2 = nCol-1;
+
+ // Kommentar?
+ if( eScanType != SbxSTRING &&
+ ( aSym.GetBuffer()[0] == '\'' || aSym.EqualsIgnoreCaseAscii( "REM" ) ) )
+ {
+ aSym = String::CreateFromAscii( "REM" );
+ nCol2 += String( pLine ).Len();
+ pLine = NULL;
+ }
+ return TRUE;
+
+ // Sonst Zeilen-Ende: aber bitte auf '_' testen, ob die
+ // Zeile nicht weitergeht!
+eoln:
+ if( nCol && *--pLine == '_' )
+ {
+ pLine = NULL; return NextSym();
+ }
+ else
+ {
+ pLine = NULL;
+ nLine = nOldLine;
+ nCol1 = nOldCol1;
+ nCol2 = nOldCol2;
+ aSym = '\n';
+ nColLock = 0;
+ return TRUE;
+ }
+}
+