1 package Moose::Meta::Method::Accessor::Native::Collection;
8 requires qw( _adds_members );
10 sub _inline_coerce_new_values {
13 return unless $self->associated_attribute->should_coerce;
15 return unless $self->_tc_member_type_can_coerce;
18 '(' . $self->_new_members . ') = map { $member_tc_obj->coerce($_) }',
19 $self->_new_members . ';',
23 sub _tc_member_type_can_coerce {
26 my $member_tc = $self->_tc_member_type;
28 return $member_tc && $member_tc->has_coercion;
34 my $tc = $self->associated_attribute->type_constraint;
36 return $tc->type_parameter
37 if $tc->can('type_parameter');
44 sub _writer_value_needs_copy {
47 return $self->_constraint_must_be_checked
48 && !$self->_check_new_members_only;
54 return unless $self->_constraint_must_be_checked;
56 if ($self->_check_new_members_only) {
57 return unless $self->_adds_members;
59 return $self->_inline_check_member_constraint($self->_new_members);
63 $self->_inline_check_coercion(@_),
64 $self->_inline_check_constraint(@_),
69 sub _check_new_members_only {
72 my $attr = $self->associated_attribute;
74 my $tc = $attr->type_constraint;
76 # If we have a coercion, we could come up with an entirely new value after
77 # coercing, so we need to check everything,
78 return 0 if $attr->should_coerce && $tc->has_coercion;
80 # If the parent is our root type (ArrayRef, HashRef, etc), that means we
81 # can just check the new members of the collection, because we know that
82 # we will always be generating an appropriate collection type.
84 # However, if this type has its own constraint (it's Parameteriz_able_,
85 # not Paramet_erized_), we don't know what is being checked by the
86 # constraint, so we need to check the whole value, not just the members.
88 if $self->_is_root_type( $tc->parent )
89 && $tc->isa('Moose::Meta::TypeConstraint::Parameterized');
94 sub _inline_check_member_constraint {
98 my $attr_name = $self->associated_attribute->name;
101 'for (' . $new_value . ') {',
102 'if (!$member_tc->($_)) {',
103 $self->_inline_throw_error(
104 '"A new member value for ' . $attr_name
105 . ' does not pass its type constraint because: "'
106 . ' . $member_tc_obj->get_message($_)',
114 sub _inline_get_old_value_for_trigger {
116 my ($instance, $old) = @_;
118 my $attr = $self->associated_attribute;
119 return unless $attr->has_trigger;
122 'my ' . $old . ' = ' . $self->_has_value($instance),
123 '? ' . $self->_copy_old_value($self->_get_value($instance)),
128 around _eval_environment => sub {
132 my $env = $self->$orig(@_);
134 my $member_tc = $self->_tc_member_type;
136 return $env unless $member_tc;
138 $env->{'$member_tc_obj'} = \($member_tc);
140 $env->{'$member_tc'} = \( $member_tc->_compiled_type_constraint );