summaryrefslogtreecommitdiffstats
path: root/lib/cppparser/lexer.h
blob: dd3e5824f2a9b0457ad6a730adf0b114ee4a162f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
/* This file is part of TDevelop
    Copyright (C) 2002,2003 Roberto Raggi <roberto@kdevelop.org>

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    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
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public License
    along with this library; see the file COPYING.LIB.  If not, write to
    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
    Boston, MA 02110-1301, USA.
*/

#ifndef LEXER_H
#define LEXER_H

#include "driver.h"

#include <tqstring.h>
#include <tqmap.h>
#include <tqvaluestack.h>
#include <tqpair.h>
#include <tqptrvector.h>
#include <hashedstring.h>
#include <ext/hash_map>

#define CHARTYPE TQChar

enum Type {
    Token_eof = 0,
    Token_identifier = 1000,
    Token_number_literal,
    Token_char_literal,
    Token_string_literal,
    Token_whitespaces,
    Token_comment,
    Token_preproc,

    Token_assign = 2000,
    Token_ptrmem,
    Token_ellipsis,
    Token_scope,
    Token_shift,
    Token_eq,
    Token_leq,
    Token_geq,
    Token_incr,
    Token_decr,
    Token_arrow,

    Token_concat,

    Token_K_DCOP,
    Token_k_dcop,
    Token_k_dcop_signals,

    Token_Q_OBJECT,
    Token_,
    Token_signals,
    Token_slots,
    Token_emit,
    Token_foreach, // qt4 [erbsland]

    Token_and,
    Token_and_eq,
    Token_asm,
    Token_auto,
    Token_bitand,
    Token_bitor,
    Token_bool,
    Token_break,
    Token_case,
    Token_catch,
    Token_char,
    Token_class,
    Token_compl,
    Token_const,
    Token_const_cast,
    Token_continue,
    Token_default,
    Token_delete,
    Token_do,
    Token_double,
    Token_dynamic_cast,
    Token_else,
    Token_enum,
    Token_explicit,
    Token_export,
    Token_extern,
    Token_false,
    Token_float,
    Token_for,
    Token_friend,
    Token_goto,
    Token_if,
    Token_inline,
    Token_int,
    Token_long,
    Token_mutable,
    Token_namespace,
    Token_new,
    Token_not,
    Token_not_eq,
    Token_operator,
    Token_or,
    Token_or_eq,
    Token_private,
    Token_protected,
    Token_public,
    Token_register,
    Token_reinterpret_cast,
    Token_return,
    Token_short,
    Token_signed,
    Token_sizeof,
    Token_static,
    Token_static_cast,
    Token_struct,
    Token_switch,
    Token_template,
    Token_this,
    Token_throw,
    Token_true,
    Token_try,
    Token_typedef,
    Token_typeid,
    Token_typename,
    Token_union,
    Token_unsigned,
    Token_using,
    Token_virtual,
    Token_void,
    Token_volatile,
    Token_wchar_t,
    Token_while,
    Token_xor,
    Token_xor_eq
};

enum SkipType {
    SkipWord,
    SkipWordAndArguments
};

struct LexerData;

class Token
{
    Token(const TQString &);
    Token( int type, int position, int length, const TQString& text );
    Token( const Token& source );

    Token& operator = ( const Token& source );
    bool operator == ( const Token& token ) const;
    operator int () const;

public:
    bool isNull() const;

    int type() const;
    void setType( int type );

    void getStartPosition( int* line, int* column ) const;
    void setStartPosition( int line, int column );
    void getEndPosition( int* line, int* column ) const;
    void setEndPosition( int line, int column );

    unsigned int length() const;
    void setLength( unsigned int length );

    int position() const;
    void setPosition( int position );

    TQString text() const;

private:
    int m_type;
    int m_position;
    int m_length;
    int m_startLine;
    int m_startColumn;
    int m_endLine;
    int m_endColumn;
    const TQString & m_text;

    friend class Lexer;
    friend class Parser;
}; // class Token

class Lexer
{
public:
    Lexer( Driver* driver );
    ~Lexer();

    bool recordComments() const;
    void setRecordComments( bool record );

    bool recordWhiteSpaces() const;
    void setRecordWhiteSpaces( bool record );

    bool reportWarnings() const;
    void setReportWarnings( bool enable );

    bool reportMessages() const;
    void setReportMessages( bool enable );

    bool skipWordsEnabled() const;
    void setSkipWordsEnabled( bool enabled );

    bool preprocessorEnabled() const;
    void setPreprocessorEnabled( bool enabled );

    void resetSkipWords();
    void addSkipWord( const TQString& word, SkipType skipType=SkipWord, const TQString& str = TQString() );

    TQString source() const;
    void setSource( const TQString& source );

    int index() const;
    void setIndex( int index );

    //returns the count of lines that wer skipped due to #ifdef's
    int skippedLines() const;
    
    void reset();

    const Token& tokenAt( int position ) const;
    const Token& nextToken();
    const Token& lookAhead( int n ) const;

    static int toInt( const Token& token );

    int tokenPosition( const Token& token ) const;
    void getTokenPosition( const Token& token, int* line, int* col );

    int currentLine() const { return m_currentLine; }
    int currentColumn() const { return m_currentColumn; }

    inline const CHARTYPE* offset( int offset ) const {
        return m_source.unicode() + offset;
    }

    inline int getOffset( const TQChar* p ) const {
        return int(p - (m_source.unicode()));
    }
    
private:
    void setEndPtr( const TQChar* c ) {
      m_endPtr = c;
      if( m_ptr <  m_endPtr )
          m_currentChar = *m_ptr;
      else
          m_currentChar = TQChar::null;
    }
    const TQChar currentChar() const;
    TQChar peekChar( int n=1 ) const;
    int currentPosition() const;

    void insertCurrent( const TQString& str );
    
    void tokenize();
    void nextToken( Token& token, bool stopOnNewline=false );
    void nextChar();
    void nextChar( int n );
    void skip( int l, int r );
    void readIdentifier();
    void readWhiteSpaces( bool skipNewLine=true, bool skipOnlyOnce=false );
    void readLineComment();
    void readMultiLineComment();
    void readCharLiteral();
    void readStringLiteral();
    void readNumberLiteral();

    int findOperator3() const;
    int findOperator2() const;
    bool eof() const;

    // preprocessor (based on an article of Al Stevens on Dr.Dobb's journal)
    int testIfLevel();
    int macroDefined();
    TQString readArgument();

    int macroPrimary();
    int macroMultiplyDivide();
    int macroAddSubtract();
    int macroRelational();
    int macroEquality();
    int macroBoolAnd();
    int macroBoolXor();
    int macroBoolOr();
    int macroLogicalAnd();
    int macroLogicalOr();
    int macroExpression();

    void handleDirective( const TQString& directive );
    void processDefine( Macro& macro );
    void processElse();
    void processElif();
    void processEndif();
    void processIf();
    void processIfdef();
    void processIfndef();
    void processInclude();
    void processUndef();

private:
    LexerData* d;
    Driver* m_driver;
    TQPtrVector< Token > m_tokens;
    int m_size;
    int m_index;
    TQString m_source;
    const TQChar* m_ptr;
    const TQChar* m_endPtr;
    TQChar m_currentChar;
    bool m_recordComments;
    bool m_recordWhiteSpaces;
    bool m_startLine;
    __gnu_cxx::hash_map< HashedString, TQPair<SkipType, TQString> > m_words;

    
    int m_skippedLines;
    int m_currentLine;
    int m_currentColumn;
    bool m_skipWordsEnabled;

    // preprocessor
    TQMemArray<bool> m_skipping;
    TQMemArray<bool> m_trueTest;
    int m_ifLevel;
    bool m_preprocessorEnabled;
    bool m_inPreproc;

    bool m_reportWarnings;
    bool m_reportMessages;

private:
    Lexer( const Lexer& source );
    void operator = ( const Lexer& source );
};


inline Token::Token(const TQString & text)
    : m_type( -1 ),
      m_position( 0 ),
      m_length( 0 ),
      m_text( text )
{
}

inline Token::Token( int type, int position, int length, const TQString& text )
    : m_type( type ),
      m_position( position ),
      m_length( length ),
      m_text( text )
{
}

inline Token::Token( const Token& source )
    : m_type( source.m_type ),
      m_position( source.m_position ),
      m_length( source.m_length ),
      m_startLine( source.m_startLine ),
      m_startColumn( source.m_startColumn ),
      m_endLine( source.m_endLine ),
      m_endColumn( source.m_endColumn ),
      m_text( source.m_text )
{
}

inline Token& Token::operator = ( const Token& source )
{
    m_type = source.m_type;
    m_position = source.m_position;
    m_length = source.m_length;
    m_startLine = source.m_startLine;
    m_startColumn = source.m_startColumn;
    m_endLine = source.m_endLine;
    m_endColumn = source.m_endColumn;
//    m_text = source.m_text;
    return( *this );
}

inline Token::operator int () const
{
    return m_type;
}

inline bool Token::operator == ( const Token& token ) const
{
    return m_type == token.m_type &&
       m_position == token.m_position &&
         m_length == token.m_length &&
      m_startLine == token.m_startLine &&
    m_startColumn == token.m_startColumn &&
        m_endLine == token.m_endLine &&
      m_endColumn == token.m_endColumn &&
           m_text == token.m_text;
}

inline bool Token::isNull() const
{
    return m_type == Token_eof || m_length == 0;
}

inline int Token::type() const
{
    return m_type;
}

inline void Token::setType( int type )
{
    m_type = type;
}

inline int Token::position() const
{
    return m_position;
}

inline TQString Token::text() const
{
    return m_text.mid(m_position, m_length);
}

inline void Token::setStartPosition( int line, int column )
{
    m_startLine = line;
    m_startColumn = column;
} 

inline void Token::setEndPosition( int line, int column )
{
    m_endLine = line;
    m_endColumn = column;
}

inline void Token::getStartPosition( int* line, int* column ) const
{
    if( line ) *line = m_startLine;
    if( column ) *column = m_startColumn;
}

inline void Token::getEndPosition( int* line, int* column ) const
{
    if( line ) *line = m_endLine;
    if( column ) *column = m_endColumn;
}

inline void Token::setPosition( int position )
{
    m_position = position;
}

inline unsigned int Token::length() const
{
    return m_length;
}

inline void Token::setLength( unsigned int length )
{
    m_length = length;
}

inline bool Lexer::recordComments() const
{
    return m_recordComments;
}

inline void Lexer::setRecordComments( bool record )
{
    m_recordComments = record;
}

inline bool Lexer::recordWhiteSpaces() const
{
    return m_recordWhiteSpaces;
}

inline void Lexer::setRecordWhiteSpaces( bool record )
{
    m_recordWhiteSpaces = record;
}

inline TQString Lexer::source() const
{
    return m_source;
}

inline int Lexer::index() const
{
    return m_index;
}

inline void Lexer::setIndex( int index )
{
    m_index = index;
}

inline const Token& Lexer::nextToken()
{
    if( m_index < m_size )
        return *m_tokens[ m_index++ ];

    return *m_tokens[ m_index ];
}

inline const Token& Lexer::tokenAt( int n ) const
{
    return *m_tokens[ TQMIN(n, m_size-1) ];
}

inline const Token& Lexer::lookAhead( int n ) const
{
    return *m_tokens[ TQMIN(m_index + n, m_size-1) ];
}

inline int Lexer::tokenPosition( const Token& token ) const
{
    return token.position();
}

inline void Lexer::nextChar()
{
    if(*m_ptr == '\n') {
        ++m_currentLine;
        m_currentColumn = 0;
        m_startLine = true;
    } else {
	++m_currentColumn;
    }
    ++m_ptr;

    if( m_ptr <  m_endPtr )
        m_currentChar = *m_ptr;
    else
        m_currentChar = TQChar::null;
}

inline void Lexer::nextChar( int n )
{
    m_currentColumn += n;
    m_ptr += n;
    
    if( m_ptr <  m_endPtr )
        m_currentChar = *m_ptr;
    else
        m_currentChar = TQChar::null;
}

inline void Lexer::readIdentifier()
{
    while( currentChar().isLetterOrNumber() || currentChar() == '_' )
        nextChar();
}

inline void Lexer::readWhiteSpaces( bool skipNewLine, bool skipOnlyOnce )
{
    while( !currentChar().isNull() ){
        TQChar ch = currentChar();

        if( ch == '\n' && !skipNewLine ){
            break;
        } else if( ch.isSpace() ){
            nextChar();
        } else if( m_inPreproc && currentChar() == '\\' ){
            nextChar();
            readWhiteSpaces( true, true );
        } else {
            break;
        }
        if( skipOnlyOnce && ch == '\n' ) {
          skipNewLine = false;
        }
    }
}

//little hack for better performance
inline bool isTodo( const TQString& txt, int position ) {
    if( txt.length() < position + 4 ) return false;
    return (txt[ position ] == 't' || txt[ position ] == 'T')
            && (txt[ position+1 ] == 'o' || txt[ position+1 ] == 'O')
            && (txt[ position+2 ] == 'd' || txt[ position+2 ] == 'D')
            && (txt[ position+3 ] == 'o' || txt[ position+3 ] == 'O');
}

inline bool isFixme( const TQString& txt, int position ) {
    if( txt.length() < position + 5 ) return false;
    return (txt[ position ] == 'f' || txt[ position ] == 'F')
            && (txt[ position+1 ] == 'i' || txt[ position+1 ] == 'I')
            && (txt[ position+2 ] == 'x' || txt[ position+2 ] == 'X')
            && (txt[ position+3 ] == 'm' || txt[ position+3 ] == 'M')
            && (txt[ position+4 ] == 'e' || txt[ position+4 ] == 'E');
}

inline void Lexer::readLineComment()
{
    while( !currentChar().isNull() && currentChar() != '\n' ){
        if( m_reportMessages && isTodo( m_source, currentPosition() ) ){
	    nextChar( 4 );
	    TQString msg;
	    int line = m_currentLine;
	    int col = m_currentColumn;

	    while( currentChar() ){
		if( currentChar() == '*' && peekChar() == '/' )
		    break;
		else if( currentChar() == '\n' )
		    break;

		msg += currentChar();
		nextChar();
	    }
	    m_driver->addProblem( m_driver->currentFileName(), Problem(msg, line, col, Problem::Level_Todo) );
	} else
        if( m_reportMessages && isFixme( m_source, currentPosition() ) ){
            nextChar( 5 );
            TQString msg;
            int line = m_currentLine;
            int col = m_currentColumn;

            while( currentChar() ){
            if( currentChar() == '*' && peekChar() == '/' )
                break;
            else if( currentChar() == '\n' )
                break;

            msg += currentChar();
            nextChar();
            }
            m_driver->addProblem( m_driver->currentFileName(), Problem(msg, line, col, Problem::Level_Fixme) );
        } else
            nextChar();
    }
}

inline void Lexer::readMultiLineComment()
{
    while( !currentChar().isNull() ){
        if( currentChar() == '*' && peekChar() == '/' ){
            nextChar( 2 );
            return;
        } else if( m_reportMessages && isTodo( m_source, currentPosition() ) ){
	    nextChar( 4 );
	    TQString msg;
	    int line = m_currentLine;
	    int col = m_currentColumn;

	    while( currentChar() ){
		if( currentChar() == '*' && peekChar() == '/' )
		    break;
		else if( currentChar() == '\n' )
		    break;
		msg += currentChar();
		nextChar();
	    }
	    m_driver->addProblem( m_driver->currentFileName(), Problem(msg, line, col, Problem::Level_Todo) );
        } else
            if( m_reportMessages && isFixme( m_source, currentPosition() ) ) {
            nextChar( 5 );
            TQString msg;
            int line = m_currentLine;
            int col = m_currentColumn;

            while( currentChar() ){
            if( currentChar() == '*' && peekChar() == '/' )
                break;
            else if( currentChar() == '\n' )
                break;

            msg += currentChar();
            nextChar();
            }
            m_driver->addProblem( m_driver->currentFileName(), Problem(msg, line, col, Problem::Level_Fixme) );
        } else
            nextChar();
    }
}

inline void Lexer::readCharLiteral()
{
    if( currentChar() == '\'' )
        nextChar(); // skip '
    else if( currentChar() == 'L' && peekChar() == '\'' )
	nextChar( 2 ); // slip L'
    else
        return;

    while( !currentChar().isNull() ){
        int len = getOffset( m_endPtr ) - currentPosition();

        if( len>=2 && (currentChar() == '\\' && peekChar() == '\'') ){
            nextChar( 2 );
        } else if( len>=2 && (currentChar() == '\\' && peekChar() == '\\') ){
            nextChar( 2 );
        } else if( currentChar() == '\'' ){
            nextChar();
            break;
        } else {
	    nextChar();
	}
    }
}

inline void Lexer::readStringLiteral()
{
    if( currentChar() != '"' )
        return;

    nextChar(); // skip "

    while( !currentChar().isNull() ){
        int len = getOffset( m_endPtr ) - currentPosition();

        if( len>=2 && currentChar() == '\\' && peekChar() == '"' ){
            nextChar( 2 );
        } else if( len>=2 && currentChar() == '\\' && peekChar() == '\\' ){
            nextChar( 2 );
        } else if( currentChar() == '"' ){
            nextChar();
            break;
        } else {
	    nextChar();
	}
    }
}

inline void Lexer::readNumberLiteral()
{
    while( currentChar().isLetterOrNumber() || currentChar() == '.' )
        nextChar();
}

inline int Lexer::findOperator3() const
{
    int n = getOffset( m_endPtr ) - currentPosition();

    if( n >= 3){
	TQChar ch = currentChar(), ch1=peekChar(), ch2=peekChar(2);

	if( ch == '<' && ch1 == '<' && ch2 == '=' ) return Token_assign;
	else if( ch == '>' && ch1 == '>' && ch2 == '=' ) return Token_assign;
	else if( ch == '-' && ch1 == '>' && ch2 == '*' ) return Token_ptrmem;
	else if( ch == '.' && ch1 == '.' && ch2 == '.' ) return Token_ellipsis;
    }

    return -1;
}

inline int Lexer::findOperator2() const
{
    int n = getOffset( m_endPtr ) - currentPosition();

    if( n>=2 ){
	TQChar ch = currentChar(), ch1=peekChar();

	if( ch == ':' && ch1 == ':' ) return Token_scope;
	else if( ch == '.' && ch1 == '*' ) return Token_ptrmem;
	else if( ch == '+' && ch1 == '=' ) return Token_assign;
	else if( ch == '-' && ch1 == '=' ) return Token_assign;
	else if( ch == '*' && ch1 == '=' ) return Token_assign;
	else if( ch == '/' && ch1 == '=' ) return Token_assign;
	else if( ch == '%' && ch1 == '=' ) return Token_assign;
	else if( ch == '^' && ch1 == '=' ) return Token_assign;
	else if( ch == '&' && ch1 == '=' ) return Token_assign;
	else if( ch == '|' && ch1 == '=' ) return Token_assign;
	else if( ch == '<' && ch1 == '<' ) return Token_shift;
	else if( ch == '>' && ch1 == '>' ) return Token_shift;
	else if( ch == '=' && ch1 == '=' ) return Token_eq;
	else if( ch == '!' && ch1 == '=' ) return Token_eq;
	else if( ch == '<' && ch1 == '=' ) return Token_leq;
	else if( ch == '>' && ch1 == '=' ) return Token_geq;
	else if( ch == '&' && ch1 == '&' ) return Token_and;
	else if( ch == '|' && ch1 == '|' ) return Token_or;
	else if( ch == '+' && ch1 == '+' ) return Token_incr;
	else if( ch == '-' && ch1 == '-' ) return Token_decr;
	else if( ch == '-' && ch1 == '>' ) return Token_arrow;
	else if( ch == '#' && ch1 == '#' ) return Token_concat;
    }

    return -1;
}

inline bool Lexer::skipWordsEnabled() const
{
    return m_skipWordsEnabled;
}

inline void Lexer::setSkipWordsEnabled( bool enabled )
{
    m_skipWordsEnabled = enabled;
}

inline bool Lexer::preprocessorEnabled() const
{
    return m_preprocessorEnabled;
}

inline void Lexer::setPreprocessorEnabled( bool enabled )
{
    m_preprocessorEnabled = enabled;
}

inline int Lexer::currentPosition() const
{
    return getOffset( m_ptr );
}

inline const TQChar Lexer::currentChar() const
{
    return m_currentChar;
}

inline TQChar Lexer::peekChar( int n ) const
{
    const TQChar* p = m_ptr + n;
    
    if( p <  m_endPtr )
        return *p;
    else
        return TQChar::null;
}

inline bool Lexer::eof() const
{
    return m_ptr >= m_endPtr;
}

inline bool Lexer::reportWarnings() const
{
    return m_reportWarnings;
}

inline void Lexer::setReportWarnings( bool enable )
{
    m_reportWarnings = enable;
}

inline bool Lexer::reportMessages() const
{
    return m_reportMessages;
}

inline void Lexer::setReportMessages( bool enable )
{
    m_reportMessages = enable;
}

inline void Lexer::insertCurrent( const TQString& str ) {
    int posi = currentPosition();
    m_source.insert( posi, str );

    m_ptr = offset( posi );
    m_endPtr = offset( m_source.length() );
    if( m_ptr < m_endPtr )
      m_currentChar = *m_ptr;
    else
      m_currentChar = TQChar::null;
}

#endif