my $orig = shift;
my $self = shift;
- my $ia = $self->init_arg;
-
- # $_[2] is the hashref of options passed to the constructor. If our
- # parameter passed in was undef, pop it off the args...
- pop unless (defined $ia && defined($_[2]->{$ia}));
-
- # Invoke the real init, as the above line cleared the unef
+ my $key_name = $self->init_arg;
+
+ # $_[2] is the hashref of options passed to the constructor.
+ # If our parameter passed in was undef, pop it off the args...
+ # but leave the value unscathed if the attribute's type constraint can
+ # handle undef (or doesn't have one, which implicitly means it can)
+ if (not defined $key_name or not defined($_[2]->{$key_name}))
+ {
+ my $type_constraint = $self->type_constraint;
+ if ($type_constraint and not $type_constraint->check(undef))
+ {
+ pop;
+ }
+ }
+
+ # Invoke the real init, as the above line cleared the undef
$self->$orig(@_)
});
1;
-=head1 NAME
+# ABSTRACT: Make your attribute(s) tolerant to undef intitialization
-MooseX::UndefTolerant::Attribute - Make your attribute(s) tolerant to undef intitialization
+__END__
=head1 SYNOPSIS
Applying this trait to your attribute makes it's initialization tolerant of
of undef. If you specify the value of undef to any of the attributes they
-will not be initialized (or will be set to the default, if applicable).
+will not be initialized (or will be set to the default, if applicable).
Effectively behaving as if you had not provided a value at all.
-=head1 AUTHOR
-
-Cory G Watson, C<< <gphat at cpan.org> >>
-
-=head1 COPYRIGHT & LICENSE
-
-Copyright 2009 Cory G Watson.
-
-This program is free software; you can redistribute it and/or modify it
-under the terms of either: the GNU General Public License as published
-by the Free Software Foundation; or the Artistic License.
-
-See http://dev.perl.org/licenses/ for more information.
-
=cut