forked from rjbs/Throwable
/
Throwable.pm
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/
Throwable.pm
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package Throwable;
use Moose::Role;
# ABSTRACT: a role for classes that can be thrown
=head1 SYNOPSIS
package Redirect;
use Moose;
with 'Throwable';
has url => (is => 'ro');
...then later...
Redirect->throw({ url => $url });
=head1 DESCRIPTION
Throwable is a role for classes that are meant to be thrown as exceptions to
standard program flow. It is very simple and does only two things: saves any
previous value for C<$@> and calls C<die $self>.
=attr previous_exception
This attribute is created automatically, and stores the value of C<$@> when the
Throwable object is created.
=cut
has 'previous_exception' => (
is => 'ro',
init_arg => undef,
default => sub {
return unless defined $@ and ref $@ or length $@;
return $@;
},
);
=method throw
Something::Throwable->throw({ attr => $value });
This method will call new, passing all arguments along to new, and will then
use the created object as the only argument to C<die>.
=cut
sub throw {
my ($self, @rest) = @_;
my $throwable = $self->new(@rest);
die $throwable;
}
no Moose::Role;
1;