[antlr-interest] Lexer rule match keyword or identifier depending on the previous token
Gavin Lambert
antlr at mirality.co.nz
Mon Aug 20 03:46:12 PDT 2007
At 21:44 20/08/2007, Guillaume Chavanon wrote:
>I am writing a grammar for a language that allow some keywords
to
>be identifiers if they are preceded by a special character.
>Is it possible to add gated semantic predicate in a lexer rule
that
>will test the previous token ?
Possibly, but wouldn't it be easier to match the special character
and then say "anything after this must be an identifier"?
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