[antlr-interest] beginner to ANTLR

[Rana Rahal]

I figured out the comment issue 

EXTCHAR: CHAR (LINE_COMMENT!)?

But if I can get some help on how I can set TAG to be up to the first ":" in
a line and any other ":" on that same line will be part of the VALUE portion
would be very appreciated.

Thanks

-----Original Message-----
From: antlr-interest-bounces at antlr.org
[mailto:antlr-interest-bounces at antlr.org] On Behalf Of Rana Rahal
Sent: Thursday, December 01, 2011 3:55 PM
To: antlr-interest at antlr.org
Subject: [antlr-interest] beginner to ANTLR

Hi,

 

I am new to ANTLR and I cannot figure out how to read a tag:value file,
where value can span multiple lines.

I have the following:

 

TOKEN

       :      ( TAG ':' ) => TAG ':'' '         {$setType(TAG);}

       |      (      '\n'          {newline();}

              |      '\r' '\n'     {newline();}

              |      .

              )

              {$setType(CHAR);}

;

 

What I'm trying to figure out is how I would stop reading into CHAR when I
reach a comment

 

TOKEN

       :      ( TAG ':' ) => TAG ':'' '         {$setType(TAG);}

       |   EXTCHAR

;

       

protected

CHAR

   : ( '\n'          {newline();}

              |      '\r' '\n'     {newline();}

              |      .

              )

;

 

EXTCHAR: CHAR ~LINE_COMMENT ; //I know I can't do this but how can I have
that behavior?

 

Also What's the best way to define this so that only the first : in a line
is the token others are ignored. Ex:  date: YYYY/MM/DD:HH:MM:SS

 

Thanks.

 

 

 


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