[antlr-interest] Literal - ID clash resolution

[Bill Andersen]

Folks

I'm having a small problem.   Not that I can't solve it myself but it's one of those things for which:

a) I'm sure there exists a good stock solution, and

b) Google is especially poorly suited to find in a search

Here it is.  I have rules in the grammar for my DSL that have '=' as a literal appearing them.  Like this

option
  : optionName=ID '=' STRING
  ;

The DSL parses a language specification and that specification can define reserved words, one of which (in my test case) is '='.  This creates a problem: The DSL grammar must recognize '=' as an instance of identifier (ID - I'm using ANTLRWorks default lexer rule template, slightly modified, for now) but it can't recognize '=' as such because it's already a literal used in the DSL grammar.

Can anyone tell me what the best way to deal with this is?

If my explanation doesn't make sense (seems mine often don't for some reason) I'll be glad to post the whole grammar, but I don't think that's necessary.

	.bill