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package MooseX::Module::Refresh;
use Moose;
extends 'Module::Refresh';
=head1 NAME
MooseX::Module::Refresh - Module::Refresh for Moose classes
=head1 SYNOPSIS
# During each request, call this once to refresh changed modules:
MooseX::Module::Refresh->refresh;
# Each night at midnight, you automatically download the latest
# Acme::Current from CPAN. Use this snippet to make your running
# program pick it up off disk:
$refresher->refresh_module('Acme/Current.pm');
=head1 DESCRIPTION
=cut
sub _pmfile_to_class {
my ($file) = @_;
$file =~ s{\.pm$}{};
# XXX: is this correct on windows?
$file =~ s{/}{::}g;
return $file;
}
sub find_dependent_packages {
my $self = shift;
my ($package) = @_;
my $meta = Class::MOP::class_of($package);
return unless defined $meta;
if ($meta->isa('Moose::Meta::Class')) {
return $meta->subclasses;
}
elsif ($meta->isa('Moose::Meta::Role')) {
# XXX: can this be pushed back into Moose::Meta::Role?
my @classes;
for my $class_meta (Class::MOP::get_all_metaclass_instances) {
next if $class_meta->name eq $meta->name;
next unless $class_meta->isa('Moose::Meta::Class')
|| $class_meta->isa('Moose::Meta::Role');
push @classes, $class_meta->name
if $class_meta->does_role($meta->name);
}
return @classes;
}
else {
die "unknown metaclass for $package ($meta)";
}
}
after refresh_module => sub {
my $self = shift;
my ($modfile) = @_;
$self->refresh_module(Class::MOP::_class_to_pmfile($_))
for $self->find_dependent_packages(_pmfile_to_class($modfile));
};
after unload_module => sub {
my $self = shift;
my $mod = _pmfile_to_class($_[0]);
my $meta = Class::MOP::class_of($mod);
return unless defined $meta;
return unless $meta->isa('Moose::Meta::Class');
if ($meta->is_immutable) {
# XXX: we can probably do better here, if we try hard enough - would
# require walking the entire inheritance tree downwards though
warn "Can't modify an immutable class";
return;
}
$self->unload_methods($meta);
$self->unload_attrs($meta);
# XXX: this is probably wrong, but necessary for now, since the metaclass
# still existing means that Moose::init_meta won't set the default base
# class. this will break things that try to "use base" something before
# doing "use Moose", not sure how to get around that.
$meta->superclasses('Moose::Object');
bless $meta, 'Moose::Meta::Class';
# XXX: why is this breaking
#for my $attr ($meta->meta->get_all_attributes) {
#$attr->set_value($meta, $attr->default($meta));
#}
};
sub unload_methods {
my $self = shift;
my ($meta) = @_;
for my $meth ($meta->get_method_list) {
# don't remove things that unload_subs didn't remove
$meta->remove_method($meth)
unless exists $DB::sub{$meta->name . "::$meth"};
}
}
sub unload_attrs {
my $self = shift;
my ($meta) = @_;
$meta->remove_attribute($_) for $meta->get_attribute_list;
}
no Moose;
=head1 BUGS
No known bugs.
Please report any bugs through RT: email
C<bug-moosex-module-refresh at rt.cpan.org>, or browse to
L<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=MooseX-Module-Refresh>.
=head1 SEE ALSO
=head1 SUPPORT
You can find this documentation for this module with the perldoc command.
perldoc MooseX::Module::Refresh
You can also look for information at:
=over 4
=item * AnnoCPAN: Annotated CPAN documentation
L<http://annocpan.org/dist/MooseX-Module-Refresh>
=item * CPAN Ratings
L<http://cpanratings.perl.org/d/MooseX-Module-Refresh>
=item * RT: CPAN's request tracker
L<http://rt.cpan.org/NoAuth/Bugs.html?Dist=MooseX-Module-Refresh>
=item * Search CPAN
L<http://search.cpan.org/dist/MooseX-Module-Refresh>
=back
=head1 AUTHOR
Jesse Luehrs <doy at tozt dot net>
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2009 by Jesse Luehrs.
This is free software; you can redistribute it and/or modify it under
the same terms as perl itself.
=cut
1;
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