EMACS mode (or other tool) for debugging yacc grammars?

kelley@phys.ocean.dal.ca (Dan Kelley)
15 Nov 1998 13:25:52 -0500

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EMACS mode (or other tool) for debugging yacc grammars? kelley@phys.ocean.dal.ca (1998-11-15)
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From: kelley@phys.ocean.dal.ca (Dan Kelley)
Newsgroups: comp.compilers
Date: 15 Nov 1998 13:25:52 -0500
Organization: ISINet, Nova Scotia
Summary: need tool to aid study of yacc output
Keywords: yacc, debug

Is there an emacs mode -- or other tool -- that can help me to more
easily debug yacc output? I'm writing a compiler for a scientific
graphics language [http://www.phys.ocean.dal.ca/~kelley/gre] and am
finding myself continually searching up and down in the
parser.cpp.output file that bison generates, trying to figure out what
my state stack means, in terms of my grammar.


I reckon everybody runs into this sort of thing whilst designing
grammars ... staring at line like


state stack now 0 51 5 92 187 257 302 98 58 49 150 180


and wondering just what the heck all those states are!




--
Dan E. Kelley internet: mailto:Dan.Kelley@Dal.CA
Oceanography Department phone: (902)494-1694
Dalhousie University fax: (902)494-2885
Halifax, NS, CANADA, B3H 4J1 http://www.phys.ocean.dal.ca/~kelley

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