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[Caml-list] Notion of lexer state in ocamllex?
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Date: -- (:)
From: Michal Moskal <malekith@p...>
Subject: Re: [Caml-list] Notion of lexer state in ocamllex?
On Fri, Aug 29, 2003 at 03:44:06PM -0500, David Van Horn wrote:
> I'm new to ocamllex and I am trying to translate a lexer written using CUP
> (for Java), but I don't understand how parser state is accomplished in
> ocamllex.  For example, I have:
> 
> <YYINITIAL>"/*" { yybegin(INCOMMENT); }
> <INCOMMENT>"*/" { yybegin(YYINITIAL); }
> <INCOMMENT>[^\*]+    { }
> 
> Any ideas how to do this in ocamllex?  Thanks.

rule token = parse
  ...
  | "/*" 	{ comment lexbuf; token lexbuf }
  ...
and comment = parse
  "*/" 		{ () }
  _ 		{ comment lexbuf }


Or something like this.

-- 
: Michal Moskal :: http://www.kernel.pl/~malekith : GCS {C,UL}++++$ a? !tv
: When in doubt, use brute force. -- Ken Thompson : {E-,w}-- {b++,e}>+++ h

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