Commit | Line | Data |
f7fd22b6 |
1 | package Moose::Meta::Method::Accessor::Native::Array::Writer; |
2 | |
3 | use strict; |
4 | use warnings; |
5 | |
6 | our $VERSION = '1.13'; |
7 | $VERSION = eval $VERSION; |
8 | our $AUTHORITY = 'cpan:STEVAN'; |
9 | |
10 | use base 'Moose::Meta::Method::Accessor::Native::Array'; |
11 | |
a7821be5 |
12 | sub _generate_method { |
13 | my $self = shift; |
14 | |
15 | my $inv = '$self'; |
16 | |
17 | my $slot_access = $self->_inline_get($inv); |
18 | |
19 | my $code = 'sub {'; |
20 | $code .= "\n" . $self->_inline_pre_body(@_); |
21 | |
22 | $code .= "\n" . 'my $self = shift;'; |
23 | |
24 | $code .= "\n" . $self->_inline_check_lazy($inv); |
25 | |
26 | $code .= "\n" . $self->_inline_curried_arguments; |
27 | |
28 | $code .= "\n" . $self->_inline_check_argument_count; |
29 | |
30 | $code .= "\n" . $self->_inline_process_arguments; |
31 | |
32 | $code .= "\n" . $self->_inline_check_arguments; |
33 | |
34 | my $new_values = $self->_new_values($slot_access); |
35 | my $potential_value = $self->_potential_value($slot_access); |
36 | |
37 | $code .= "\n" |
38 | . $self->_inline_tc_code( |
39 | $new_values, |
40 | $potential_value |
41 | ); |
42 | |
43 | $code .= "\n" . $self->_inline_get_old_value_for_trigger($inv); |
44 | $code .= "\n" . $self->_capture_old_value($slot_access); |
45 | |
46 | $code .= "\n" . $self->_inline_store( $inv, '[' . $potential_value . ']' ); |
47 | |
48 | $code .= "\n" . $self->_inline_post_body(@_); |
49 | $code .= "\n" . $self->_inline_trigger( $inv, $slot_access, '@old' ); |
50 | |
51 | $code .= "\n" . $self->_return_value( $inv, '@old' ); |
52 | |
53 | $code .= "\n}"; |
54 | |
55 | return $code; |
56 | } |
57 | |
58 | sub _inline_process_arguments { q{} } |
59 | |
60 | sub _inline_check_arguments { q{} } |
61 | |
62 | sub _new_values { '@_' } |
63 | |
64 | sub _inline_tc_code { |
65 | my ( $self, $new_value, $potential_value ) = @_; |
66 | |
67 | return q{} unless $self->_constraint_must_be_checked; |
68 | |
69 | if ( $self->_check_new_members_only ) { |
70 | return q{} unless $self->_adds_members; |
71 | |
72 | return $self->_inline_check_member_constraint($new_value); |
73 | } |
74 | else { |
75 | return $self->_inline_check_coercion($potential_value) . "\n" |
76 | . $self->_inline_check_constraint($potential_value); |
77 | } |
78 | } |
79 | |
80 | sub _constraint_must_be_checked { |
81 | my $self = shift; |
82 | |
83 | my $attr = $self->associated_attribute; |
84 | |
85 | return $attr->has_type_constraint |
86 | && ( $attr->type_constraint->name ne 'ArrayRef' |
87 | || ( $attr->should_coerce && $attr->type_constraint->has_coercion ) ); |
88 | } |
89 | |
90 | sub _check_new_members_only { |
91 | my $self = shift; |
92 | |
93 | my $attr = $self->associated_attribute; |
94 | |
95 | my $tc = $attr->type_constraint; |
96 | |
97 | # If we have a coercion, we could come up with an entirely new value after |
98 | # coercing, so we need to check everything, |
99 | return 0 if $attr->should_coerce && $tc->has_coercion; |
100 | |
101 | # If the parent is ArrayRef, that means we can just check the new members |
102 | # of the collection, because we know that we will always be generating an |
103 | # ArrayRef. |
104 | return 1 if $tc->parent->name eq 'ArrayRef'; |
105 | |
106 | # If our parent is something else ( subtype 'Foo' as 'ArrayRef[Str]' ) |
107 | # then there may be additional constraints on the whole value, as opposed |
108 | # to constraints just on the members. |
109 | return 0; |
110 | } |
111 | |
112 | sub _inline_check_member_constraint { |
113 | my ( $self, $new_value ) = @_; |
114 | |
115 | my $attr_name = $self->associated_attribute->name; |
116 | |
117 | return '$member_tc->($_) || ' |
118 | . $self->_inline_throw_error( |
119 | qq{"A new member value for '$attr_name' does not pass its type constraint because: "} |
120 | . ' . $member_tc->get_message($_)', |
121 | "data => \$_" |
122 | ) . " for $new_value;"; |
123 | } |
124 | |
125 | sub _inline_check_coercion { |
126 | my ( $self, $value ) = @_; |
127 | |
128 | my $attr = $self->associated_attribute; |
129 | |
130 | return '' |
131 | unless $attr->should_coerce && $attr->type_constraint->has_coercion; |
132 | |
133 | # We want to break the aliasing in @_ in case the coercion tries to make a |
134 | # destructive change to an array member. |
135 | my $code = 'my @copy = @{ $value }'; |
136 | return '@_ = @{ $attr->type_constraint->coerce(\@copy) };'; |
137 | } |
138 | |
139 | sub _inline_check_constraint { |
140 | my $self = shift; |
141 | |
142 | return q{} unless $self->_constraint_must_be_checked; |
143 | |
144 | return $self->SUPER::_inline_check_constraint(@_); |
145 | } |
146 | |
147 | sub _capture_old_value { return q{} } |
148 | sub _return_value { return q{} } |
149 | |
150 | sub _eval_environment { |
151 | my $self = shift; |
152 | |
153 | my $env = $self->SUPER::_eval_environment; |
154 | |
155 | return $env |
156 | unless $self->_constraint_must_be_checked |
157 | and $self->_check_new_members_only; |
158 | |
159 | $env->{'$member_tc'} |
160 | = \( $self->associated_attribute->type_constraint->type_parameter |
161 | ->_compiled_type_constraint ); |
162 | |
163 | return $env; |
164 | } |
165 | |
f7fd22b6 |
166 | 1; |