Re: kimwitu lex and yacc...

Harald Boehme <boehme@informatik.hu-berlin.de>
4 May 2000 17:17:24 -0400

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Related articles
kimwitu lex and yacc... abate@gutturnio.students.cs.unibo.it (2000-05-01)
Re: kimwitu lex and yacc... boehme@informatik.hu-berlin.de (Harald Boehme) (2000-05-04)
Re: kimwitu lex and yacc... belinfan@cs.utwente.nl (2000-05-10)
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From: Harald Boehme <boehme@informatik.hu-berlin.de>
Newsgroups: comp.compilers
Date: 4 May 2000 17:17:24 -0400
Organization: Humboldt University Berlin, Department of Computer Science
References: 00-05-009
Keywords: tools, parse

Hi


Pietro Abate wrote:


> I want to use kimwitu to make a simple parser for a pascal-like
> language, but I'm not able to find any example to do this... I've
> seen the calculator example in the kimwitu distribution but I've not
> realy understood which are the realtions between kimwitu, lex and
> yacc. Does anybody could help me with an realy little example that


So you have to write down the syntax of the lang. in terms of an lex-
and yacc-file. The rules in the yacc-file should than extended to
construct the phyla (subtree) and pass it up to the upper rule via the
yacc value stack ($$-notation). For this purpose kimwitu and kimwitu++
provide an YYSTYPE definition to use in yacc.


But any way you should have a look in an compiler book.


Regrads,
Harald


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