develooper Front page | perl.perl5.porters | Postings from April 2010

Re: package block syntax

Thread Previous | Thread Next
From:
=?UTF-8?B?w4Z2YXIgQXJuZmrDtnLDsCBCamFybWFzb24=?=
Date:
April 28, 2010 01:34
Subject:
Re: package block syntax
Message ID:
u2u51dd1af81004280134ka4e030dm2a21dcdcb18b0204@mail.gmail.com
On Wed, Apr 28, 2010 at 07:51, Rafael Garcia-Suarez <rgs@consttype.org> wrote:
> On 27 April 2010 22:24, Zefram <zefram@fysh.org> wrote:
>> The attached patch implements a Perl 6ism that seems worth imitating:
>> "package Foo { ... }" is equivalent to "{ package Foo; ... }".  I think
>> this is worthwhile.  I'm posting it for discussion, not for immediate
>> application, but if the consensus is in favour then this patch should
>> be usable as-is.
>
> I'm only committing the patch :

via IRC "commenting". I checked blead and it wasn't there :)

> - I'd like to see more tests (examples: is __LINE__ correct ? does
> goto work into / out of a package block ? do we have a nice error if
> the block isn't closed ? what about nested package blocks ?)
> - B::Deparse would need ajdusting

Yup, at least:

segfaults: package Foo {

goto inside/out of package: works:

    use 5.012;
    no warnings 'deprecated';
    goto engage;
    package Foo 0.10 {
      engage:
        say  __PACKAGE__;
        say eval '__PACKAGE__';
        say __LINE__;
      goto out;
      say "moo";
    }
    out:
        say eval '__PACKAGE__';
        say __LINE__;

gives:

    $ ./perl -Ilib package.pl
    Foo
    Foo
    8
    main
    14

Thread Previous | Thread Next


nntp.perl.org: Perl Programming lists via nntp and http.
Comments to Ask Bjørn Hansen at ask@perl.org | Group listing | About