followpos for '?' and '+' operators

Meeta Gupta <meeta.gupta@yahoo.com>
31 Jan 2006 09:57:20 -0500

          From comp.compilers
Related articles
followpos for '?' and '+' operators meeta.gupta@yahoo.com (Meeta Gupta) (2006-01-31)
Re: followpos for '?' and '+' operators clint@0lsen.net (Clint Olsen) (2006-01-31)
Re: followpos for '?' and '+' operators jburgy@gmail.com (jburgy) (2006-01-31)
Re: followpos for '?' and '+' operators rpboland@gmail.com (Ralph Boland) (2006-02-02)
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From: Meeta Gupta <meeta.gupta@yahoo.com>
Newsgroups: comp.compilers
Date: 31 Jan 2006 09:57:20 -0500
Organization: Compilers Central
Keywords: lex, question
Posted-Date: 31 Jan 2006 09:57:20 EST

Hi,
      I'm Writing A Program(In C) To Convert Regular
Expressions To DFA's(Directly Without Going Through
Intermediate NFA's) And I'M Following The Procedure
Given In The Dragon Book(Compilers:Principles,
Techniques And Tools). I've Been Able To Handle Cases
For |,.,* Oprators But How Can I Calculate The
Followpos For '?' And '+' Operators? How Should I
Handle These Operators When I Build The Syntax Tree
For A Regular Expression.




Meeta Gupta
Student

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