Commit | Line | Data |
7adfd53f |
1 | package Reaction::Meta::InterfaceModel::Action::ParameterAttribute; |
2 | |
3 | use Reaction::Class; |
4 | use Scalar::Util 'blessed'; |
5 | |
6 | class ParameterAttribute is 'Reaction::Meta::Attribute', which { |
7 | has valid_values => ( |
8 | isa => 'CodeRef', |
9 | is => 'rw', # hack since clone_and_inherit hates me. |
10 | predicate => 'has_valid_values' |
11 | ); |
12 | |
13 | implements new => as { shift->SUPER::new(@_); }; # work around immutable |
14 | |
15 | implements check_valid_value => as { |
16 | my ($self, $object, $value) = @_; |
17 | confess "Can't check_valid_value when no valid_values set" |
18 | unless $self->has_valid_values; |
89939ff9 |
19 | confess join " - ", blessed($object), $self->name |
20 | unless ref $self->valid_values; |
7adfd53f |
21 | my $valid = $self->valid_values->($object, $self); |
22 | if ($self->type_constraint |
23 | && ($self->type_constraint->name eq 'ArrayRef' |
24 | || $self->type_constraint->is_subtype_of('ArrayRef'))) { |
25 | confess "Parameter type is array ref but passed value isn't" |
26 | unless ref($value) eq 'ARRAY'; |
27 | return [ map { $self->_check_single_valid($valid => $_) } @$value ]; |
28 | } else { |
29 | return $self->_check_single_valid($valid => $value); |
30 | } |
31 | }; |
32 | |
33 | implements _check_single_valid => as { |
34 | my ($self, $valid, $value) = @_; |
35 | if (ref $valid eq 'ARRAY') { |
36 | return $value if grep { $_ eq $value } @$valid; |
37 | } else { |
38 | $value = $value->ident_condition if blessed($value); |
39 | return $valid->find($value); |
40 | } |
41 | return undef; # XXX this is an assumption that undef is never valid |
42 | }; |
43 | |
44 | implements all_valid_values => as { |
45 | my ($self, $object) = @_; |
46 | confess "Can't call all_valid_values on an attribute without valid_values" |
47 | unless $self->has_valid_values; |
48 | my $valid = $self->valid_values->($object, $self); |
49 | return ((ref $valid eq 'ARRAY') |
50 | ? @$valid |
51 | : $valid->all); |
52 | }; |
53 | |
54 | implements valid_value_collection => as { |
55 | my ($self, $object) = @_; |
56 | confess "Can't call valid_value_collection on an attribute without valid_values" |
57 | unless $self->has_valid_values; |
58 | my $valid = $self->valid_values->($object, $self); |
59 | confess "valid_values returned an arrayref, not a collection" |
60 | if (ref $valid eq 'ARRAY'); |
61 | return $valid; |
62 | }; |
63 | |
64 | }; |
65 | |
66 | 1; |
67 | |
68 | =head1 NAME |
69 | |
70 | Reaction::Meta::InterfaceModel::Action::ParamterAttribute |
71 | |
72 | =head1 DESCRIPTION |
73 | |
74 | =head1 METHODS |
75 | |
76 | =head2 new |
77 | |
78 | =head2 valid_values |
79 | |
80 | =head2 has_valid_values |
81 | |
82 | =head2 check_valid_value |
83 | |
84 | =head2 all_valid_values |
85 | |
86 | =head2 valid_value_collection |
87 | |
88 | =head2 reader |
89 | |
90 | =head2 writer |
91 | |
92 | =head1 SEE ALSO |
93 | |
94 | L<Reaction::Meta::Attribute> |
95 | |
96 | =head1 AUTHORS |
97 | |
98 | See L<Reaction::Class> for authors. |
99 | |
100 | =head1 LICENSE |
101 | |
102 | See L<Reaction::Class> for the license. |
103 | |
104 | =cut |