[antlr-interest] [] in commentary

[Monty Zukowski]

See the documentation about the charVocabulary option. 
http://www.antlr.org/doc/options.html#_bb14

Monty

ANTLR & Java Consultant -- http://www.codetransform.com
ANSI C/GCC transformation toolkit -- 
http://www.codetransform.com/gcc.html
Embrace the Decay -- http://www.codetransform.com/EmbraceDecay.html

On Aug 5, 2004, at 1:30 AM, Klaus Dalinghaus wrote:

> Hi all,
>
> I am using the following lines to get comments in my grammar:
>
> SL_COMMENT :
> 	"//"
> 	(~'\n')* '\n'
> 	{ _ttype = Token.SKIP; newline(); }
> 	;
>
> When I now put a comment with squared brackets in my file like
>
> // This is [a] comment
>
> I get an error message:
>
> expecting '\n' found [
>
> Comments with other symbols like () oder {} are allowed.
> Does anybody has an idea what the problem is?
>
> Thanks
>
>
> Klaus Dalinghaus
>
> ---------------------------------------------------------------
> Institute of Cognitive Science, University of Osnabrück
> Kolpingstraße 7, 49069 Osnabrück
> Tel.: +49-(0)-541-969-4797   Fax.: +49-(0)-541-969-6229
> http://www.cogsci.uni-osnabrueck.de/~kdaling
>
>
>
>
>
>
>
> Here is my complete grammar
>
> class FPParseParser extends Parser;
>
> // options for the parser
> options {
> 	buildAST = true;	// uses CommonAST by default
> 	defaultErrorHandler = false;
> }
>
>
> fuzzyProgram
> 	:	( prefixStatement ) ? ( operatorDefinition ) * ( clauseBlock ) +
> 	;
>
> prefixStatement
> 	:	PREFIX^ IDENTIFIER SEMI!
> 	;
>
> operatorDefinition
> 	:	OPERATOR^ IDENTIFIER EQUALS! IDENTIFIER LEFTBRACKET! (
> operatorArgumentList ) ? RIGHTBRACKET! SEMI!
> 	;
>
> operatorArgumentList
> 	:	IDENTIFIER ( COMMA^ IDENTIFIER ) *
> 	;
>
> clauseBlock
> 	:	clause SEMI^
> 	;
>
> clause
> 	:	conclusion LEFTARROW^ premiseOp
> 	;
>
> premiseOp
> 	:	simplePremise
> 	|	multiPremise
> 	|	
> 	;
>
> simplePremise
> 	:	premiseList PIPE^ operator
> 	;
>
> multiPremise
> 	:	 LEFTCURLY^ premise RIGHTCURLY! PIPE! operator
> 	;
>
> premiseList
> 	:	premise ( COMMA^ premise )*
> 	;
>
> conclusion
> 	:	IDENTIFIER
> 	;
>
> premise
> 	:	IDENTIFIER
> 	;
>
> operator
> 	:	IDENTIFIER
> 	;
>
> class FPParseLexer extends Lexer;
>
>
> options{
> 	defaultErrorHandler = false;
> }
>
> tokens{
> 	PREFIX = "prefix";
> 	OPERATOR = "operator";
> }
>
> WS	:	(' '
> 	|	'\t'
> 	|	'\n'
> 	|	'\r')
> 		{ _ttype = Token.SKIP; }
> 	;
>
> SL_COMMENT :
> 	"//"
> 	(~'\n')* '\n'
> 	{ _ttype = Token.SKIP; newline(); }
> 	;
>
>
> EQUALS:			'=';
>
> LEFTARROW:		"<-";
>
> LEFTCURLY:		'{';
>
> RIGHTCURLY:		'}';
>
> LEFTBRACKET:	'(';
>
> RIGHTBRACKET:	')';
>
> SEMI:			';';
>
> COMMA:			',';
>
> PIPE:			"|";
>
> IDENTIFIER
> options {
> 	testLiterals = true;
> 	// a paraphrase used for error messages
> 	paraphrase = "an identifier";
> }
> ('a'..'z'|'A'..'Z'|'_'|'0'..'9'|'.'|'-')*
> 	:	('a'..'z'|'A'..'Z'|'_'|'0'..'9'|'.'|'-')+
> 	;
>
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>



 
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