py - Perl Yacc

Hi all,


I'd like to announce the availabilty of py 0.4, a parser generator
a'la bison generating perl output. It was originally designed and
implemented by Mark-Jason Dominus, while I added some patches to ease
it's use. Actually py is not a parser generator by itself, but works
by using bison as follows:


You write a file in bison syntax with perl actions instead of C
actions embedded into the grammar definition. The special tokens '(-'
and '-)' are used in order to separate the grammar from the perl code


The perl code is stripped from Your file, obtaining an 'empty' grammar,
which is feed to bison with the '-v' option generating a description of
the finite state automaton


This description of the automaton is read and translated into a perl
parser, embedding the originally stripped perl code in the rules


That's all :-) Further details may be found at


    http://www.plover.com/py (the original version
0.1)


while the actual version is available at


    http://www.probits.de/en/download/download.htm (the current version
0.4)


Comments welcome!


Regards, Knud

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