1 package MooseX::UndefTolerant::Constructor;
4 if ( $Moose::VERSION < 1.9900 ) {
5 around('_generate_slot_initializer', sub {
9 # note the key in the params may not match the attr name.
10 my $key_name = $self->_attributes->[$_[0]]->init_arg;
12 # insert a line of code at the start of the initializer,
13 # clearing the param if it's undefined.
15 if (defined $key_name)
17 # leave the value unscathed if the attribute's type constraint can
18 # handle undef (or doesn't have one, which implicitly means it can)
19 my $type_constraint = $self->_attributes->[$_[0]]->type_constraint;
20 if ($type_constraint and not $type_constraint->check(undef))
23 qq# delete \$params->{'$key_name'} unless # .
24 qq# exists \$params->{'$key_name'} && defined \$params->{'$key_name'};\n#;
26 return $tolerant_code . $self->$orig(@_);
30 return $self->$orig(@_);