use Moose::Meta::TypeCoercion::Union;
-our $VERSION = '0.74';
+use List::Util qw(first);
+
+our $VERSION = '1.25';
$VERSION = eval $VERSION;
our $AUTHORITY = 'cpan:STEVAN';
default => sub { [] }
));
-sub new {
+sub new {
my ($class, %options) = @_;
my $name = join '|' => sort { $a cmp $b }
);
$self->_set_constraint(sub { $self->check($_[0]) });
- $self->coercion(Moose::Meta::TypeCoercion::Union->new(
- type_constraint => $self
- ));
+
return $self;
}
+# XXX - this is a rather gross implementation of laziness for the benefit of
+# MX::Types. If we try to call ->has_coercion on the objects during object
+# construction, this does not work when defining a recursive constraint with
+# MX::Types.
+sub coercion {
+ my $self = shift;
+
+ return $self->{coercion} if exists $self->{coercion};
+
+ # Using any instead of grep here causes a weird error with some corner
+ # cases when MX::Types is in use. See RT #61001.
+ if ( grep { $_->has_coercion } @{ $self->type_constraints } ) {
+ return $self->{coercion} = Moose::Meta::TypeCoercion::Union->new(
+ type_constraint => $self );
+ }
+ else {
+ return $self->{coercion} = undef;
+ }
+}
+
+sub has_coercion {
+ return defined $_[0]->coercion;
+}
+
sub _actually_compile_type_constraint {
my $self = shift;
$message .= ($message ? ' and ' : '') . $err
if defined $err;
}
- return ($message . ' in (' . $self->name . ')') ;
+ return ($message . ' in (' . $self->name . ')') ;
+}
+
+sub find_type_for {
+ my ($self, $value) = @_;
+
+ return first { $_->check($value) } @{ $self->type_constraints };
}
sub is_a_type_of {
foreach my $type (@{$self->type_constraints}) {
return 1 if $type->is_a_type_of($type_name);
}
- return 0;
+ return 0;
}
sub is_subtype_of {
A type is considered equal if it is also a union type, and the two
unions have the same member types.
+=item B<< $constraint->find_type_for($value) >>
+
+This returns the first member type constraint for which C<check($value)> is
+true, allowing you to determine which of the Union's member type constraints
+a given value matches.
+
=item B<< $constraint->is_a_type_of($type_name_or_object) >>
This returns true if any of the member type constraints return true
=head1 BUGS
-All complex software has bugs lurking in it, and this module is no
-exception. If you find a bug please either email me, or add the bug
-to cpan-RT.
+See L<Moose/BUGS> for details on reporting bugs.
=head1 AUTHOR
=head1 COPYRIGHT AND LICENSE
-Copyright 2006-2009 by Infinity Interactive, Inc.
+Copyright 2006-2010 by Infinity Interactive, Inc.
L<http://www.iinteractive.com>