Path: utzoo!utgpu!watmath!att!tut.cis.ohio-state.edu!husc6!ogccse!blake!uw-beaver!sumax!polari!happym!nwnexus!intek01!mark
From: mark@intek01.UUCP (Mark McWiggins)
Newsgroups: comp.lang.c++
Subject: Re: Using YACC with C++ question
Message-ID: <230@intek01.UUCP>
Date: 4 Aug 89 17:13:43 GMT
References: <68580@yale-celray.yale.UUCP>
Organization: Integration Technologies Inc. (Intek), Bellevue WA
Lines: 31

smith-josh@CS.YALE.EDU (Josh Smith) writes:

>Is it possible to write a LEX & YACC parser using C++ ?
>That is, will YACC allow action code (the commands to be
>executed when it detects a rule) to be written in C++?

Yes and yes.  Here are the default makefile rules I use:

.y.o:
	yacc $(YFLAGS) $<
	mv y.tab.c $*.C
	CC $(CCFLAGS) -c $*.C
.l.o:
	lex $(LFLAGS) $<
	sed -f sed.script lex.yy.c >$*.C
	CC $(CCFLAGS) -c $*.C

And sed.script, to keep <stream.h> 'input' and 'output' from conflicting
with the ones you get in lex output:

s/input/inputx/
s/output/outputx/
s/set_inputx/set_input/


Hope this helped.
-- 
Mark McWiggins			Integration Technologies, Inc. (Intek)
+1 206 455 9935			DISCLAIMER:  I could be wrong ...
1400 112th Ave SE #202		Bellevue WA  98004
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