Hi, I have two problems with my ANTLR - generated Parser/Lexer (I'm new in this things). Please, help me... I'm stuck.

(At the end there is a part of grammar file that this questions are about)



1. How can I set "SEPARATOR" token value from my grammar file in produced CSVLexer/CSVParser? I mean, I wrote class that uses this Parser/Lexer but I want the class' user to have ability to set SEPARATOR to ';' instead of ",". How is it possible to define variable SEPARATOR in Parser/Lexer that will be used to process input without running antlr.Tool again?
I wonder why ANTLR hard-code tokens instead of exposing them in easy-to-modify variables...



2. In my grammar I tried to put

RECORD : (~('"'|SEPARATOR|'
'|'
'))+;

instead of

RECORD : (~('"'|','|'
'|'
'))+;



but antlr.Tool throws error:

csv.g:119:13: This subrule cannot be inverted. Only
subrules of the form:

(T1|T2|T3...) or

('c1'|'c2'|'c3'...)

may be inverted (ranges are also allowed).

Exiting due to errors.



How can I do that?



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My grammar file:

---------------------------------------

class CSVLexer extends Lexer;

options

{

defaultErrorHandler=false;

k=2;

charVocabulary = '3'..'377';

}


RECORD : (~('"'|','|'
'|'
'))+;

SEPARATOR : ',';

QRECORD : '"'!('"''"'|~('"'))+'"'!;

NEWLINE : '
''
' //DOS

| '
' //MAC

| '
' //UNIX

{ newline(); };

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