Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!jarthur!watson!ssdken
From: ssdken@watson.Claremont.EDU (Ken Nelson)
Newsgroups: comp.lang.c
Subject: calling yyparse() multiple times
Keywords: yacc, lex, parsing
Message-ID: <8079@jarthur.Claremont.EDU>
Date: 10 Aug 90 18:07:25 GMT
Sender: news@jarthur.Claremont.EDU
Reply-To: ssdken@watson.Claremont.EDU (Ken Nelson)
Lines: 25


 This is a varient of a similar question about using Lex and Yacc
 on a string.


 I need to do something like this:

   a_double =  eval_yyparse("x+y/2");
   a_double =  eval_yyparse("sin(x)");

 How can I restart the grammar?  I think I may be able to do it
 by re-initializing all the YACC variables that are set at compile
 time.  Anybody see any holes in this idea, or even better a 
 handy dandy set of routines to do it!


		Thanks,


				Ken Nelson
				Principal Engineer
				Software Systems Design
				3627 Padua Av.
				Claremont, CA 91711
				(714) 624-3402