1 package Reaction::Meta::InterfaceModel::Action::ParameterAttribute;
4 use Scalar::Util 'blessed';
6 use namespace::clean -except => [ qw(meta) ];
7 extends 'Reaction::Meta::Attribute';
13 predicate => 'has_valid_values'
16 my $self = shift->SUPER::new(@_); # work around immutable
17 if(!$self->has_valid_values and $self->has_type_constraint) {
18 my $tc = $self->type_constraint;
19 if($tc->isa('Moose::Meta::TypeConstraint::Enum')) {
20 $self->valid_values(sub { $tc->values });
26 sub check_valid_value {
27 my ($self, $object, $value) = @_;
28 confess "Can't check_valid_value when no valid_values set"
29 unless $self->has_valid_values;
30 confess join " - ", blessed($object), $self->name
31 unless ref $self->valid_values;
32 my $valid = $self->valid_values->($object, $self);
33 if ($self->type_constraint
34 && ($self->type_constraint->name eq 'ArrayRef'
35 || $self->type_constraint->is_subtype_of('ArrayRef'))) {
36 confess "Parameter type is array ref but passed value isn't"
37 unless ref($value) eq 'ARRAY';
38 return [ map { $self->_check_single_valid($valid => $_) } @$value ];
40 return $self->_check_single_valid($valid => $value);
43 sub _check_single_valid {
44 my ($self, $valid, $value) = @_;
45 return undef unless defined($value);
46 if (ref $valid eq 'ARRAY') {
47 return $value if grep { $_ eq $value } @$valid;
49 $value = $value->ident_condition if blessed($value);
50 return $valid->find($value);
52 return undef; # XXX this is an assumption that undef is never valid
54 sub all_valid_values {
55 my ($self, $object) = @_;
56 confess "Can't call all_valid_values on an attribute without valid_values"
57 unless $self->has_valid_values;
58 my $valid = $self->valid_values->($object, $self);
59 return ((ref $valid eq 'ARRAY')
63 sub valid_value_collection {
64 my ($self, $object) = @_;
65 confess "Can't call valid_value_collection on an attribute without valid_values"
66 unless $self->has_valid_values;
67 my $valid = $self->valid_values->($object, $self);
68 confess "valid_values returned an arrayref, not a collection"
69 if (ref $valid eq 'ARRAY');
73 __PACKAGE__->meta->make_immutable(inline_constructor => 0);
80 Reaction::Meta::InterfaceModel::Action::ParameterAttribute
90 =head2 has_valid_values
92 =head2 check_valid_value
94 =head2 all_valid_values
96 =head2 valid_value_collection
104 L<Reaction::Meta::Attribute>
108 See L<Reaction::Class> for authors.
112 See L<Reaction::Class> for the license.