/usr/lib/x86_64-linux-gnu/perl5/5.22/Mouse/Meta/Method/Delegation.pm is in libmouse-perl 2.4.5-1build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 | package Mouse::Meta::Method::Delegation;
use Mouse::Util qw(:meta); # enables strict and warnings
use Scalar::Util;
sub _generate_delegation{
my (undef, $attr, $handle_name, $method_to_call) = @_;
my @curried_args;
if(ref($method_to_call) eq 'ARRAY'){
($method_to_call, @curried_args) = @{$method_to_call};
}
# If it has a reader, we must use it to make method modifiers work
my $reader = $attr->get_read_method() || $attr->get_read_method_ref();
my $can_be_optimized = $attr->{_mouse_cache_method_delegation_can_be_optimized};
if(!defined $can_be_optimized){
my $tc = $attr->type_constraint;
$attr->{_mouse_cache_method_delegation_can_be_optimized} =
(defined($tc) && $tc->is_a_type_of('Object'))
&& ($attr->is_required || $attr->has_default || $attr->has_builder)
&& ($attr->is_lazy || !$attr->has_clearer);
}
if($can_be_optimized){
# need not check the attribute value
return sub {
return shift()->$reader()->$method_to_call(@curried_args, @_);
};
}
else {
# need to check the attribute value
return sub {
my $instance = shift;
my $proxy = $instance->$reader();
my $error = !defined($proxy) ? ' is not defined'
: ref($proxy) && !Scalar::Util::blessed($proxy) ? qq{ is not an object (got '$proxy')}
: undef;
if ($error) {
$instance->meta->throw_error(
"Cannot delegate $handle_name to $method_to_call because "
. "the value of "
. $attr->name
. $error
);
}
$proxy->$method_to_call(@curried_args, @_);
};
}
}
1;
__END__
=head1 NAME
Mouse::Meta::Method::Delegation - A Mouse method generator for delegation methods
=head1 VERSION
This document describes Mouse version v2.4.5
=head1 SEE ALSO
L<Moose::Meta::Method::Delegation>
=cut
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