2 package Moose::Meta::Method::Constructor;
8 use Scalar::Util 'blessed', 'weaken', 'looks_like_number', 'refaddr';
11 use base 'Moose::Meta::Method',
12 'Class::MOP::Method::Constructor';
18 my $meta = $options{metaclass};
20 (ref $options{options} eq 'HASH')
21 || $class->throw_error("You must pass a hash of options", data => $options{options});
23 ($options{package_name} && $options{name})
24 || $class->throw_error("You must supply the package_name and name parameters $Class::MOP::Method::UPGRADE_ERROR_TEXT");
28 'package_name' => $options{package_name},
29 'name' => $options{name},
30 'options' => $options{options},
31 'associated_metaclass' => $meta,
32 'definition_context' => $options{definition_context},
33 '_expected_method_class' => $options{_expected_method_class} || 'Moose::Object',
36 # we don't want this creating
37 # a cycle in the code, if not
39 weaken($self->{'associated_metaclass'});
41 $self->_initialize_body;
48 sub _initialize_body {
50 $self->{'body'} = $self->_generate_constructor_method_inline;
53 sub _eval_environment {
56 my $attrs = $self->_attributes;
58 my $defaults = [map { $_->default } @$attrs];
60 # We need to check if the attribute ->can('type_constraint')
61 # since we may be trying to immutabilize a Moose meta class,
62 # which in turn has attributes which are Class::MOP::Attribute
63 # objects, rather than Moose::Meta::Attribute. And
64 # Class::MOP::Attribute attributes have no type constraints.
65 # However we need to make sure we leave an undef value there
66 # because the inlined code is using the index of the attributes
67 # to determine where to find the type constraint
69 my @type_constraints = map {
70 $_->can('type_constraint') ? $_->type_constraint : undef
73 my @type_constraint_bodies = map {
74 defined $_ ? $_->_compiled_type_constraint : undef;
80 '$defaults' => \$defaults,
81 '@type_constraints' => \@type_constraints,
82 '@type_constraint_bodies' => \@type_constraint_bodies,
83 ( map { %{ $_->inline_environment } } @type_constraints ),
89 # ABSTRACT: Method Meta Object for constructors
97 This class is a subclass of L<Class::MOP::Method::Constructor> that
98 provides additional Moose-specific functionality
100 To understand this class, you should read the the
101 L<Class::MOP::Method::Constructor> documentation as well.
105 C<Moose::Meta::Method::Constructor> is a subclass of
106 L<Moose::Meta::Method> I<and> L<Class::MOP::Method::Constructor>.
110 See L<Moose/BUGS> for details on reporting bugs.