A parser generator (conceptually) produces two pieces, a lexer and a
parser. The lexer is responsible for chopping up a stream of
characters into a stream of tokens. The parser is instead responsible
for recognizing patterns within the stream of tokens.
JavaCC does not provide a mechanism by which you can define tokens in
some other specification and then have JavaCC generate the lexer from
that specification. However, Javacc does allow you to specify that a
generated parser should use a custom lexer of your own creation
(provided it conforms to a particular interface). You can either
redefine the tokens as defined in the alternative specification, or
you can build a custom lexer around that specification.
Nathan
On Sep 9, 2007, at 12.08, imp wrote:
> Hi all, the following is a snippet of TOKEN section of a .jj file;
> TOKEN : { } Rather than hardcoded I want the tokens to be populated
> from a table/database/xml/csv . Please inform whether i can specify
> in the .jj file?? Please inform if you know any other way(by
> editing the generated javaclass or any thing else) thanks imp
> View this message in context: How to define the tokens dynamically?
> Sent from the java.net - javacc users mailing list archive at
> Nabble.com.
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