[Catalyst] Catalyst.pm code does what?

Yuval Kogman nothingmuch at woobling.org
Wed Jan 18 11:55:47 CET 2006

On Wed, Jan 18, 2006 at 10:44:10 +0000, Carl Franks wrote:
> In Catalyst.pm , subroutine setup (line 659 - svn r3100)
> what is this code supposed to do / why is it needed?
>     # Call plugins setup
>     {
>         no warnings qw/redefine/;
>         local *setup = sub { };
>         $class->setup;
>     }

MyApp->setup goes to Catalyst::setup first, because at this stage
MyApp isa Catalyst, but not any of the plugins.

This loads all the plugins and components and what not, and then
temporarily empties Catalyst::setup, and re-invokes MyApp->setup.

This then goes into all the plugins' setup snippets, which call
MyApp->NEXT::setup until the last one is reached, and it goes into
the 'sub { }'.

Basically it emulates the behavior that should happen if
MyApp->setup was called and all the plugins are alreay loaded and
in @MyApp::ISA

 ()  Yuval Kogman <nothingmuch at woobling.org> 0xEBD27418  perl hacker &

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