coerce => 1,
handles => [ 'id' ],
);
- __PACKAGE__->meta->make_immutable;
+ # This class shouldn't be immutable when using Moose, or the
+ # coercing attributes will not be updated with the future coercions.
+ __PACKAGE__->meta->make_immutable if any_moose() ne 'Moose';
}
# Another class the user wants to use instead of X (cannot be changed)
required => 1,
);
-=head2 C<user_constraint>
-
-An optional user defined code reference which predates checking the target for validity.
-
-=cut
-
-has 'user_constraint' => (
- is => 'ro',
- isa => 'Maybe[CodeRef]',
-);
+my $target_tc = __PACKAGE__->meta->find_attribute_by_name('target')
+ ->type_constraint;
=head1 METHODS
-=head2 C<< new name => $name, mapper => $mapper, target => $target, [ user_constraint => sub { ... } ] >>
+=head2 C<< new name => $name, mapper => $mapper, target => $target >>
Constructs a type constraint object that will attempt to autocoerce objects that are not valid according to C<$target> by loading the class returned by C<$mapper>.
$target = LaTeX::TikZ::Tools::type_constraint($target) if defined $target;
Carp::confess("No meta object for $target_name") unless defined $target;
}
- __PACKAGE__->meta->find_attribute_by_name('target')
- ->type_constraint->assert_valid($target);
+ $target_tc->assert_valid($target);
$args{target} = $target;
if (any_moose() eq 'Moose') {
$args{coercion} = Moose::Meta::TypeCoercion->new;
}
- my $tc;
$args{constraint} = Sub::Name::subname('_constraint' => sub {
my ($thing) = @_;
# Remember that when ->check is called inside coerce, a return value of 0
# means that coercion should take place, while 1 signifies that the value is
- # already OK.
-
- # First, try a possible user defined constraint
- my $user = $tc->user_constraint;
- if (defined $user) {
- my $ok = $user->($thing);
- return 1 if $ok;
- }
+ # already OK. Thus we should return true if and only if $thing passes the
+ # target type constraint.
- # Then, it's valid if and only if it passes the target type constraint
- return $tc->target->check($thing);
+ return $target->check($thing);
});
- $tc = $class->$orig(%args);
+ return $class->$orig(%args);
};
=head2 C<coerce $thing>