Re: Which YACC tool do you recommend?

Vladimir Makarov <>
19 Jan 2000 01:16:00 -0500

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Which YACC tool do you recommend? (2000-01-15)
Re: Which YACC tool do you recommend? (Vladimir Makarov) (2000-01-19)
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From: Vladimir Makarov <>
Newsgroups: comp.compilers
Date: 19 Jan 2000 01:16:00 -0500
Organization: Cygnus Solutions
References: 00-01-054
Keywords: yacc wrote:
> Can anybody recommend a yacc tool?

You could try MSTA from COCOM toolset. You can find it on

MSTA implements POSIX YACC + many extensions.

> I am currently using a 5 year old version of MKS yacc. So far, I am
> quite satified, however there are some restrictions:
> - 16 bit, using extended memory
> - it does not support long file names
> Requirements:
> LALR(1)
MSTA supports LALR(k)- and LR(k)-grammars (k>0). Moreover it generates
only code which makes minimal lookahead for resolving each conflict.

> running under NT
It works on the most of Unixes and WIN32. There is installshield
version of distribution and also sources which can be compiled by
Microsoft VC++ version 6.0 or CYGWIN.

> c++
It generates C and C++ code.

> long file names
It supports this for WIN32.

> definition of parser stack types (%type instruction)
> good support of error recovery and error reporting
There is standard YACC error recovery and improved one.

> multiple actions per production
> selection preference for resolving conflicts
You can use YACC %prec constructions and special constructions which
constrain lookahead when you generate a LALR(k) or LR(k) parser for k >

> support for debugging and for detecting+correcting shift / reduce
> conflicts
It can output all LR-situations of LR-set and LR-situations with context
for better debugging.

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