[antlr-interest] Parsing an IP Address

[madison_stjames]

I am trying to parse an IP address using the following:

In the Lexer:

DOT       :   '.'
          ;

IPSEG     :   ( ('1'('0'..'9')('0'..'9'))|('2'('0'..'4')('0'..'9'))
              |('2''5'('0'..'9'))|(('1'..'9')?('0'..'9')) )
          ;

In the Parser:
seg
   :    s:IPSEG
        {}
   ;

ip
   :    i: seg DOT seg DOT seg DOT seg
        {Console.Out.WriteLine(i.getText());}
   ;

I am getting a number of errors: one says that the type or 
namespace 'i' cannot be found, and another says that the type or 
namespace "lexer" cannot be found.

Obviously, it's a syntax error, but I haven't been able to determine 
the fix on my own.

I am trying to keep my tokens relatively small, and perform most of 
the assembly in the parser.

Is there a way to do this?


 

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