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authortoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
committertoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
commit114a878c64ce6f8223cfd22d76a20eb16d177e5e (patch)
treeacaf47eb0fa12142d3896416a69e74cbf5a72242 /lib/cppparser/lexer.h
downloadtdevelop-114a878c64ce6f8223cfd22d76a20eb16d177e5e.tar.gz
tdevelop-114a878c64ce6f8223cfd22d76a20eb16d177e5e.zip
Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.
BUG:215923 git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdevelop@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
Diffstat (limited to 'lib/cppparser/lexer.h')
-rw-r--r--lib/cppparser/lexer.h867
1 files changed, 867 insertions, 0 deletions
diff --git a/lib/cppparser/lexer.h b/lib/cppparser/lexer.h
new file mode 100644
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--- /dev/null
+++ b/lib/cppparser/lexer.h
@@ -0,0 +1,867 @@
+/* This file is part of KDevelop
+ 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., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA.
+*/
+
+#ifndef LEXER_H
+#define LEXER_H
+
+#include "driver.h"
+
+#include <qstring.h>
+#include <qmap.h>
+#include <qvaluestack.h>
+#include <qpair.h>
+#include <qptrvector.h>
+#include <hashedstring.h>
+#include <ext/hash_map>
+
+#define CHARTYPE QChar
+
+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_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 QString &);
+ Token( int type, int position, int length, const QString& 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 );
+
+ QString 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 QString & 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 QString& word, SkipType skipType=SkipWord, const QString& str = QString::null );
+
+ QString source() const;
+ void setSource( const QString& 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 QChar* p ) const {
+ return int(p - (m_source.unicode()));
+ }
+
+private:
+ void setEndPtr( const QChar* c ) {
+ m_endPtr = c;
+ if( m_ptr < m_endPtr )
+ m_currentChar = *m_ptr;
+ else
+ m_currentChar = QChar::null;
+ }
+ const QChar currentChar() const;
+ QChar peekChar( int n=1 ) const;
+ int currentPosition() const;
+
+ void insertCurrent( const QString& 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();
+ QString 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 QString& 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;
+ QPtrVector< Token > m_tokens;
+ int m_size;
+ int m_index;
+ QString m_source;
+ const QChar* m_ptr;
+ const QChar* m_endPtr;
+ QChar m_currentChar;
+ bool m_recordComments;
+ bool m_recordWhiteSpaces;
+ bool m_startLine;
+ __gnu_cxx::hash_map< HashedString, QPair<SkipType, QString> > m_words;
+
+
+ int m_skippedLines;
+ int m_currentLine;
+ int m_currentColumn;
+ bool m_skipWordsEnabled;
+
+ // preprocessor
+ QMemArray<bool> m_skipping;
+ QMemArray<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 QString & text = "")
+ : m_type( -1 ),
+ m_position( 0 ),
+ m_length( 0 ),
+ m_text( text )
+{
+}
+
+inline Token::Token( int type, int position, int length, const QString& 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 QString 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 QString 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[ QMIN(n, m_size-1) ];
+}
+
+inline const Token& Lexer::lookAhead( int n ) const
+{
+ return *m_tokens[ QMIN(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 = QChar::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 = QChar::null;
+}
+
+inline void Lexer::readIdentifier()
+{
+ while( currentChar().isLetterOrNumber() || currentChar() == '_' )
+ nextChar();
+}
+
+inline void Lexer::readWhiteSpaces( bool skipNewLine, bool skipOnlyOnce )
+{
+ while( !currentChar().isNull() ){
+ QChar 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 QString& 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 QString& 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 );
+ QString 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 );
+ QString 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 );
+ QString 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 );
+ QString 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){
+ QChar 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 ){
+ QChar 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 QChar Lexer::currentChar() const
+{
+ return m_currentChar;
+}
+
+inline QChar Lexer::peekChar( int n ) const
+{
+ const QChar* p = m_ptr + n;
+
+ if( p < m_endPtr )
+ return *p;
+ else
+ return QChar::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 QString& 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 = QChar::null;
+}
+
+#endif