On 08/01/2011 06:40 PM, Matthew Flatt wrote: > At Mon, 01 Aug 2011 18:13:11 -0600, Jon Rafkind wrote: >> How do I deal with partial lexemes when using the color:text colorer? It >> seems that if my lexer cannot produce a valid token then it will throw >> an error and the color thread will keep calling `get-token' in a busy loop. >> >> Is there some magic thing I can return from `get-token' to tell the >> colorer that it should not progress to the next position? > A coloring lexer's job is to never fail. It should instead categorize > bad input as 'error and be ready to continue. > > Continuing can mean categorizing all further input as 'error, but it's > usually better to continue in some other way. >
It seems the colorer re-tokenizes the entire input stream each time I enter a character. Is that the expected behavior? _________________________________________________ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/users
