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Re: Extract subroutines from a Perl script. OR: "Only perl can parse Perl." But can it help me to do so?

by hv (Parson)
on Sep 24, 2004 at 10:57 UTC ( #393448=note: print w/replies, xml ) Need Help??


in reply to Extract subroutines from a Perl script. OR: "Only perl can parse Perl." But can it help me to do so?

If you need to extract the exact source code, it may be quite difficult. If it is sufficient to get a functional equivalent, look into B::Deparse; from the docs:

use B::Deparse; $deparse = B::Deparse->new("-p", "-sC"); $body = $deparse->coderef2text(\&func);
and here's a specific example as a one-liner:
zen% perl -MB::Deparse -MCarp -wle 'print B::Deparse->new("-p","-sC" +)->coderef2text(\&Carp::confess)' { package Carp; die(longmess(@_)); } zen%

See the rest of the docs for full details of the options available.

Hugo

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[Corion]: Hi Discipulus!
[marto]: hopefully you guys are also well :)
[Corion]: marto: Yeah - I'm looking for a week off in a week, even if it'll be a trip to Amsterdam ;)
[Discipulus]: oh thanks, i'm always at well as the ratchet or bucket
[Corion]: But I'm slowly starting to get into programming again - yesterday I translated my talk for YAPC::E (in Amsterdam) to English, and decided to put my Jekyll-clone to rest for the time being
[Corion]: Discipulus++ # being well is like being earnest
[marto]: hopefully next year I'll be in a position to go to Perly things in Europe :)
[Corion]: Maybe I'll use the Real Jekyll a bit to get a feel for how it actually works, and to get annoyed by it ;)
[Corion]: marto: That would be cool :) There is no kids care at Perly events unfortunately, so it's not entirely family friendly
[Corion]: I think I should define a set of (say) five projects through which I rotate from time to time, just to prevent myself from being bored/annoyed by the problems they get stuck in ;)

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