1 package Moose::Meta::Method::Accessor::Native::Writer;
6 use List::MoreUtils qw( any );
9 $VERSION = eval $VERSION;
10 our $AUTHORITY = 'cpan:STEVAN';
14 with 'Moose::Meta::Method::Accessor::Native';
16 requires '_potential_value';
18 sub _generate_method {
23 my $slot_access = $self->_inline_get($inv);
27 $code .= "\n" . $self->_inline_pre_body(@_);
29 $code .= "\n" . 'my $self = shift;';
31 $code .= "\n" . $self->_inline_curried_arguments;
33 $code .= $self->_writer_core( $inv, $slot_access );
35 $code .= "\n" . $self->_inline_post_body(@_);
43 my ( $self, $inv, $slot_access ) = @_;
47 $code .= "\n" . $self->_inline_check_argument_count;
48 $code .= "\n" . $self->_inline_process_arguments( $inv, $slot_access );
49 $code .= "\n" . $self->_inline_check_arguments('for writer');
51 $code .= "\n" . $self->_inline_check_lazy($inv);
53 my $potential_value = $self->_potential_value($slot_access);
55 if ( $self->_return_value($slot_access) ) {
56 # some writers will save the return value in this variable when they
57 # generate the potential value.
58 $code .= "\n" . 'my @return;';
61 $code .= "\n" . $self->_inline_copy_native_value( \$potential_value );
63 . $self->_inline_tc_code(
67 $code .= "\n" . $self->_inline_get_old_value_for_trigger($inv);
68 $code .= "\n" . $self->_inline_capture_return_value($slot_access);
70 . $self->_inline_set_new_value(
75 $code .= "\n" . $self->_inline_trigger( $inv, $slot_access, '@old' );
76 $code .= "\n" . $self->_return_value( $slot_access, 'for writer' );
81 sub _inline_process_arguments {q{}}
83 sub _inline_check_arguments {q{}}
85 sub _value_needs_copy {
88 return $self->_constraint_must_be_checked;
91 sub _constraint_must_be_checked {
94 my $attr = $self->associated_attribute;
96 return $attr->has_type_constraint
97 && ( !$self->_is_root_type( $attr->type_constraint )
98 || ( $attr->should_coerce && $attr->type_constraint->has_coercion ) );
102 my ($self, $type) = @_;
104 my $name = $type->name();
106 return any { $name eq $_ } @{ $self->root_types };
109 sub _inline_copy_native_value {
110 my ( $self, $potential_ref ) = @_;
112 return q{} unless $self->_value_needs_copy;
114 my $code = "my \$potential = ${$potential_ref};";
116 ${$potential_ref} = '$potential';
121 sub _inline_tc_code {
122 my ( $self, $potential_value ) = @_;
124 return q{} unless $self->_constraint_must_be_checked;
126 return $self->_inline_check_coercion($potential_value) . "\n"
127 . $self->_inline_check_constraint($potential_value);
130 sub _inline_check_coercion {
131 my ( $self, $value ) = @_;
133 my $attr = $self->associated_attribute;
136 unless $attr->should_coerce && $attr->type_constraint->has_coercion;
138 # We want to break the aliasing in @_ in case the coercion tries to make a
139 # destructive change to an array member.
140 return "$value = \$type_constraint_obj->coerce($value);";
143 override _inline_check_constraint => sub {
146 return q{} unless $self->_constraint_must_be_checked;
151 sub _inline_capture_return_value { return q{} }
153 sub _inline_set_new_value {
156 return $self->_inline_store(@_)
157 if $self->_value_needs_copy
158 || !$self->_slot_access_can_be_inlined
159 || !$self->_inline_get_is_lvalue;
161 return $self->_inline_optimized_set_new_value(@_);
164 sub _inline_get_is_lvalue {
167 return $self->associated_attribute->associated_class->instance_metaclass->inline_get_is_lvalue;
170 sub _inline_optimized_set_new_value {
173 return $self->_inline_store(@_);
177 my ( $self, $slot_access ) = @_;