package MooseX::UndefTolerant::Constructor;
+
+# applied to constructor method metaclass, for Moose < 1.9900
+
use Moose::Role;
-if ( $Moose::VERSION < 1.9900 ) {
- around('_generate_slot_initializer', sub {
- my $orig = shift;
- my $self = shift;
+use strict;
+use warnings;
- # note the key in the params may not match the attr name.
- my $key_name = $self->_attributes->[$_[0]]->init_arg;
+around _generate_slot_initializer => sub {
+ my $orig = shift;
+ my $self = shift;
- # insert a line of code at the start of the initializer,
- # clearing the param if it's undefined.
+ # note the key in the params may not match the attr name.
+ my $key_name = $self->_attributes->[$_[0]]->init_arg;
- if (defined $key_name)
+ # insert a line of code at the start of the initializer,
+ # clearing the param if it's undefined.
+
+ if (defined $key_name)
+ {
+ # leave the value unscathed if the attribute's type constraint can
+ # handle undef (or doesn't have one, which implicitly means it can)
+ my $type_constraint = $self->_attributes->[$_[0]]->type_constraint;
+ if ($type_constraint and not $type_constraint->check(undef))
{
- # leave the value unscathed if the attribute's type constraint can
- # handle undef (or doesn't have one, which implicitly means it can)
- my $type_constraint = $self->_attributes->[$_[0]]->type_constraint;
- if ($type_constraint and not $type_constraint->check(undef))
- {
- my $tolerant_code =
- qq# delete \$params->{'$key_name'} unless # .
- qq# exists \$params->{'$key_name'} && defined \$params->{'$key_name'};\n#;
-
- return $tolerant_code . $self->$orig(@_);
- }
+ my $tolerant_code =
+ qq# delete \$params->{'$key_name'} unless # .
+ qq# exists \$params->{'$key_name'} && defined \$params->{'$key_name'};\n#;
+
+ return $tolerant_code . $self->$orig(@_);
}
+ }
- return $self->$orig(@_);
-});
+ return $self->$orig(@_);
+};
no Moose::Role;
1;