http://forum.codejock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Sat, 23 May 2026 02:58:15 +0000 Mon, 26 Apr 2010 11:25:27 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 forum.codejock.com/RSS_post_feed.asp?TID=16635 http://forum.codejock.com/forum_images/codejock-logo.gif http://forum.codejock.com/ http://forum.codejock.com/forum_posts.asp?TID=16635&PID=58206&title=defining-own-schema#58206 Author: 4aeng
Subject: 16635
Posted: 26 April 2010 at 11:25am

Hi.

Is there a way to use regular expressions in lex schema definitions?
I need to define tokens like this:

"<<" variable_name [operator variable_name] ";" format ">>"
variable_name = (a-z,A-Z,0-9,_)+
operator = {+,-,/,*,^,%}
format = (0-9)+ "S" (0-9)+ "D"

So << and >> are the start resp. end tags of the whole token. This token consists of two parts which are seperated by the semicolon.
The first part includes a variable definition with an optional mathematical expression. The second part defines a format definition for the value of the variable resp. result of the expression. I want the SyntaxEdit control to recognize tokens and highlight them.

Is this possible with lex? Or is there a documentation of lex somewhere?

Best regards,
Ronald Unterberger
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