[antlr-interest] RE : Problem with new lines
Anthony Brenelière
abreneliere at telys.com
Wed Feb 5 15:14:23 PST 2003
Try by adding a + behind :
NEWLINE
: ("\r\n" | '\r' | '\n')+
{ newline(); $setType(Token.SKIP); }
;
WS
: (' '|'\t')+
{ $setType(Token.SKIP); }
;
-----Message d'origine-----
De : Sharon Li [mailto:hushlee83 at yahoo.com.sg]
Envoyé : jeudi 6 février 2003 00:01
À : Antlr Interest Group
Objet : [antlr-interest] Problem with new lines
Hello,
can anyone help me with this?
1) My lexer can't seem to recognize newlines. Thanks.
/**************************** Lexer class
***************************************/
class ViewLexer extends Lexer;
options {
charVocabulary='\3'..'\377';
filter=true;
k = 4;
defaultErrorHandler=false;
}
//protected SYMBOL : (SIGN|'%'|'/'|'.'|','|'*');
protected LETTER : ( 'a'..'z' | 'A'..'Z' ) ;
protected DIGIT : ( '0'..'9' ) ;
protected SIGN : ('-'|'+');
COLON : ':';
DOT : '.';
COMMA : ',';
NUMERIC : (SIGN)? (DIGIT)+ ((DOT) (d:DIGIT)*)*
;
WORD : (LETTER) (LETTER|DIGIT)*
;
SL_COMMENT
: "//"
(~('\n'|'\r'))* ('\n'|'\r'('\n')?)?
{$setType(Token.SKIP); newline();}
;
//COMMENT : "/*" (options {greedy=false;} :.)* "*/" ;
NEWLINE : ('\r''\n')=> '\r''\n'
| '\r'{newline();}
| '\n'{newline();}
{
newline();
$setType(Token.SKIP);
}
;
WS : (' '|'\t') { $setType(Token.SKIP); } ;
/**************************************** End of lexer
*************************************/
2) How can I check for comments. How do I write a parser rule that
allows comments ?
Thanks a lot!!
Yahoo! Travel
- Valentine surprise deals. Book now!
Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
More information about the antlr-interest
mailing list