[antlr-interest] Can I restart lexing from definite position indocument?

[Sam Harwell]

Is this part of a syntax highlighter?

Either way, you can always take an arbitrary token from your original
token stream that falls before the location in the document where a
change occurred, and substring your document text at that location. Then
create a token stream based on the original tokens up to the break
followed by the tokens you just got back from the re-lexing of the
document.

Sam

-----Original Message-----
From: antlr-interest-bounces at antlr.org
[mailto:antlr-interest-bounces at antlr.org] On Behalf Of P.N.
Sent: Friday, April 17, 2009 4:51 AM
To: antlr-interest at antlr.org
Subject: [antlr-interest] Can I restart lexing from definite position
indocument?


Hello!

Just want to know, if it's possible to restart lexing in a big file. 
Say, e.g. the file might be of 20MB or more (okay, that's not good 
programming style, but's not the question here ;-) ), and I'd change 
sth. at the end of the file - would I need to do lexing from start 
again, or is there a chance to do it only for the last characters? 
Probably using org.antlr.runtime.RecognizerSharedState? How should I use
it?

Kind regards

Peter


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