Re: Libraries implementing Lexical Analysers andParsers

Question

No parser/lexer that I know of, but I know what
you should try to wrapper if you did want a
great Lexer/Parser package.
I would go for T. Parr's PCCTS. (www.oncus.com/pccts.html)
Of course if you wanted native TOOL Lexer/Parser,
instead of a wrappered 'C' lexer/parser, that
would be entirely a different question. For that
the approach should be to reimplement PCCTS libraries
in TOOL, recode the PCCTS generator (called ANTLR)
to emit TOOL code instead of C/C++ code.
This generated code would be built on a set of generic
interfaces so that it could be compiled into a sharable
library and then dynamically loaded into Forte using
Release 3' dynamic class loader. After that you could
regenerate PCCTS itself in TOOL, so that the entire
parser would now be portably implemented in TOOL.
PCCTS is written in itself and 'C'.
This is probably a hard problem.
As they say in the textbooks, "implementation is
left as an exercise for the reader".
[email protected]
>
Are there any class libraries implementing Lexical Analysers and Parsers
in Forte. Any help in this area is greatly appreciated. Thank you in
advance.
Alaiah Chandrashekar===

Answer 1

From: "Fred Scholldorf [phone]" <[email protected]>
No parser/lexer that I know of, but I know what
you should try to wrapper if you did want a
great Lexer/Parser package.
I would go for T. Parr's PCCTS. (www.oncus.com/pccts.html)Good tip, but there is a minor typo in the URL you've provided.
It should be "www.ocnus.com/pccts.html".
Michael Brennan
Programmer/Analyst
Amgen Inc.