Re: parser using perl
- From: chas.owens@xxxxxxxxx (Chas. Owens)
- Date: Mon, 31 Mar 2008 10:46:29 -0400
On Mon, Mar 31, 2008 at 10:36 AM, Sharan Basappa
<sharan.basappa@xxxxxxxxx> wrote:
Hi,
I am trying to extract information from a file that follows the syntax
of a high level language (something like C++)
The script just needs to understand a very minuscule portion of this
language to do this. It does not have to
know the complete high level language. I just wanted to know any
modules are available within perl that makes
this job easier. I feel it is possible to do the complete work in
perl, but I might be wrong. Especially around the
recursion that languages support. The other option I have is to use a
public domain parser like Bison and parse
the input, build some data structure that perl can lookup and do the processing.
I would like to know experience of people on this forum ...
Regards
Take a look at Parse::RecDescent*. In general, it doesn't matter if
you want to work with a small piece of a language or the whole
language, you still need to implement a parser for the whole language.
You can get an eighty or ninety percent solution without a full
parser, but there will always be problems.
* http://search.cpan.org/dist/Parse-RecDescent/lib/Parse/RecDescent.pm
--
Chas. Owens
wonkden.net
The most important skill a programmer can have is the ability to read.
.
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