[antlr-interest] QUESTION on: How do I handle abbreviated keywords?

[Gavin Lambert]

At 08:11 2/11/2008, Ben Gillis wrote:
 >However, the grammar compiler pukes when I try to define 
keywords
 >with a special sign, such as the dollar sign.
[...]
 >   ...
 >    _keywordDictionary.Add("$SOMETHING", DOLLAR_SOMETHING);
 >   ...
 >}
 >
 >I get the following org.antlr.Tool on the grammar file:
 >
 >error(111): MyGrammar.g:26:1: reference to attribute outside of 
a
 >rule:
 >SOMETHING
[...]
 >That leads me to believe ANTLR is somehow detecting the dollar 
sign
 >and using it as some metasymbol.
 >I thought the code snippets I put in the members block is put 
out
 >"as-is" like the ANTLR book tells me.

Mostly, but it does look for a couple of special characters for 
use with StringTemplate and for ANTLR's own attribute replacement 
(which is why you can refer to $foo.text in a rule action).

You can escape these by using \$ instead.


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