kturtle/src/lexer.h

   1 /*
   2     Copyright (C) 2003 by Walter Schreppers
   3     Copyright (C) 2004 by Cies Breijs
   4
   5     This program is free software; you can redistribute it and/or
   6     modify it under the terms of version 2 of the GNU General Public
   7     License as published by the Free Software Foundation.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  17  */
  18
  19
  20 #ifndef _LEXER_H_
  21 #define _LEXER_H_
  22
  23 #include <qmap.h>
  24 #include <qstring.h>
  25 #include <qtextstream.h>
  26
  27 #include "token.h"
  28 #include "translate.h"
  29 #include "value.h"
  30
  31
  32 class Lexer
  33 {
  34         public:
  35                 Lexer(QTextIStream&);
  36                 ~Lexer() {}
  37
  38                 Token lex(); // returns the next Token, skipping spaces
  39
  40
  41         private:
  42                 QChar getChar();
  43                 void ungetChar(QChar);
  44                 int getWord(QString&);
  45                 void skipSpaces();
  46                 void setTokenType(Token&);
  47                 int getNumber(Value&, QString&);
  48                 void getString(Token&);
  49
  50                 QTextIStream    *inputStream;
  51                 Translate       *translate;
  52                 uint             row, col, prevCol;
  53                 QChar            putBackChar;
  54 };
  55
  56
  57 #endif // _LEXER_H_
  58
  59