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From: plona@romulus.rutgers.edu (Lawrence Plona)
Newsgroups: comp.unix.programmer
Subject: Re: lex, yacc question
Message-ID: <Jun.12.19.22.56.1991.1935@romulus.rutgers.edu>
Date: 12 Jun 91 23:22:57 GMT
References: <RICKS.91Jun12155224@luke.nrl.navy.mil>
Distribution: comp
Organization: Rutgers Univ., New Brunswick, N.J.
Lines: 16

From: ricks@nrl.navy.mil (Richard Schumeyer)
> Is there a way to get lex and yacc to read from somewhere other than
> stdin?  

   yacc declares "FILE *yyin".  A pre-processor might be set up like:

   extern FILE *yyin;

   yyin = popen( "/usr/bin/m4 infile", "r" );
   yyparse();
   pclose( yyin );
-- 

Sit denique inscriptum in fronte unius  "Let it finally be written on
cuiusque quid de rebus publicis sentiat  the forehead of each man what he
- Cicero                                 thinks of open systems"