Hi Ben
I do a test based your problem. It runs perfectly well. Here is what I've
done.
//begin grammar
grammar Author;
options{
output = AST;
ASTLabelType = CommonTree;
}
tokens{
AUTHORS;
}
authors
: auth+=UNTIL_SEPARATOR (SEPARATOR auth+=UNTIL_SEPARATOR)*
-> ^(AUTHORS $auth*)
;
WS : (' ' |'\t' |'\r' |'\n' )+ {skip();} ;
SEPARATOR : ',' ;
UNTIL_SEPARATOR
: (~SEPARATOR)*
;
//end grammar
Here is a test by using the parser Antlr genereated. The AST is built
successfully.
Input : Ben Corne , An antlr FAN, Gao , Another antlr FAN
(AUTHORS Ben Corne An antlr FAN Gao Another antlr FAN)
Hope it will be helpful for you.
Best regards
Gao
At 2011-08-15 17:26:05,"Ben Corne" <[email protected]> wrote:
>Here's another try:
>authors
>: auth+=until_separator (',' auth+=until_separator)*
> -> ^(AGAUTHORS $auth)
>;
>
>until_separator
>: (~SEPARATOR)*
> ;
>
>SEPARATOR : ',' ;
>
>This results again in empty values.
>Is there an option I need to toggle to make sure the characters get
>accounted for?
>
>2011/8/14 Ben Corne <[email protected]>
>
>> HI all
>>
>> I'm trying to create a list of any characters but trailing whitespaces
>> separated by comma's.
>> Here are the rules for a specific case where I need this kind of list:
>>
>> authors
>> : (auth+=(.*)) WS* (',' WS* auth+=(.*) WS*)
>> -> ^(AGAUTHORS $auth)
>> ;
>> WS : ( ' '
>> | '\t'
>> | '\r'
>> | '\n'
>> )
>> ;
>>
>> Input: Ben Corne , An antlr FAN
>> Parse tree should look like this:
>> authors
>> |------------ 'Ben Corne'
>> |------------ WS
>> |------------ ','
>> |------------ WS
>> |------------ 'An antlr FAN'
>>
>> Instead I get one that doesn't seem to gather any character but the ','
>> (tested in debugger)
>> Anyone know what I'm doing wrong here?
>>
>> Kind regards
>> Ben Corne
>>
>
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