[antlr-interest] Re: Representing state in lexer
Anthony W Youngman
Anthony.Youngman at ECA-International.com
Wed May 14 08:02:06 PDT 2003
What is it non-deterministic with? In other words, what other construct
recognised by the lexer could a PATTERN be confused with?
You will have to define an unquoted pattern as a subset of that other
construct, and then use $settype to change the type to PATTERN if that's
what you've got.
From: cgodfrey86 [mailto:cgodfrey at epnet.com]
Sent: 14 May 2003 15:56
To: antlr-interest at yahoogroups.com
Subject: [antlr-interest] Re: Representing state in lexer
Thank you for the suggestion.
The main issue that I am running into with this is that a PATTERN
token can appear either inside or outside of quotes - so I won't
recognize a PATTERN outside of quotes. When I try and define it
without quotes, I have lexical nondeterminism
PATTERN : QUOTE (ALLOWCHARS)+ QUOTE ;
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