use Moose::Meta::TypeCoercion::Union;
-our $VERSION = '0.93';
-$VERSION = eval $VERSION;
-our $AUTHORITY = 'cpan:STEVAN';
+use List::MoreUtils qw(all);
+use List::Util qw(first);
use base 'Moose::Meta::TypeConstraint';
);
$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;
};
}
+sub can_be_inlined {
+ my $self = shift;
+
+ return all { $_->can_be_inlined } @{ $self->type_constraints };
+}
+
+sub _inline_check {
+ my $self = shift;
+ my $val = shift;
+
+ return
+ join ' || ', map { '(' . $_->_inline_check($val) . ')' }
+ @{ $self->type_constraints };
+};
+
+sub inline_environment {
+ my $self = shift;
+
+ return { map { %{ $_->inline_environment } }
+ @{ $self->type_constraints } };
+}
sub equals {
my ( $self, $type_or_name ) = @_;
return ($message . ' in (' . $self->name . ')') ;
}
+sub find_type_for {
+ my ($self, $value) = @_;
+
+ return first { $_->check($value) } @{ $self->type_constraints };
+}
+
sub is_a_type_of {
my ($self, $type_name) = @_;
foreach my $type (@{$self->type_constraints}) {
1;
+# ABSTRACT: A union of Moose type constraints
+
__END__
=pod
-=head1 NAME
-
-Moose::Meta::TypeConstraint::Union - A union of Moose type constraints
-
=head1 DESCRIPTION
This metaclass represents a union of type constraints. A union takes
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.
-
-=head1 AUTHOR
-
-Stevan Little E<lt>stevan@iinteractive.comE<gt>
-
-=head1 COPYRIGHT AND LICENSE
-
-Copyright 2006-2010 by Infinity Interactive, Inc.
-
-L<http://www.iinteractive.com>
-
-This library is free software; you can redistribute it and/or modify
-it under the same terms as Perl itself.
+See L<Moose/BUGS> for details on reporting bugs.
=cut