Commit | Line | Data |
8ee73eeb |
1 | |
2 | package Moose::Meta::Method::Accessor; |
3 | |
4 | use strict; |
5 | use warnings; |
6 | |
55c361dc |
7 | use Try::Tiny; |
8 | |
245478d5 |
9 | our $VERSION = '1.19'; |
e606ae5f |
10 | $VERSION = eval $VERSION; |
d44714be |
11 | our $AUTHORITY = 'cpan:STEVAN'; |
8ee73eeb |
12 | |
39b3bc94 |
13 | use base 'Moose::Meta::Method', |
d617b644 |
14 | 'Class::MOP::Method::Accessor'; |
15 | |
18748ad6 |
16 | sub _error_thrower { |
17 | my $self = shift; |
18 | ( ref $self && $self->associated_attribute ) || $self->SUPER::_error_thrower(); |
19 | } |
d617b644 |
20 | |
55c361dc |
21 | sub _compile_code { |
22 | my $self = shift; |
23 | my @args = @_; |
24 | try { |
25 | $self->SUPER::_compile_code(@args); |
26 | } |
27 | catch { |
28 | $self->throw_error( |
29 | 'Could not create writer for ' |
30 | . "'" . $self->associated_attribute->name . "' " |
31 | . 'because ' . $_, |
32 | error => $_, |
33 | ); |
34 | }; |
c9183ffc |
35 | } |
36 | |
f5f08b5f |
37 | sub _eval_environment { |
38 | my $self = shift; |
39 | |
40 | my $attr = $self->associated_attribute; |
41 | my $type_constraint_obj = $attr->type_constraint; |
42 | |
43 | return { |
44 | '$attr' => \$attr, |
45 | '$meta' => \$self, |
46 | '$type_constraint_obj' => \$type_constraint_obj, |
47 | '$type_constraint' => \( |
48 | $type_constraint_obj |
49 | ? $type_constraint_obj->_compiled_type_constraint |
50 | : undef |
51 | ), |
52 | }; |
53 | } |
54 | |
6a4a7c31 |
55 | sub _generate_accessor_method_inline { |
3ccdc84a |
56 | my $self = $_[0]; |
3ccdc84a |
57 | my $inv = '$_[0]'; |
ac211120 |
58 | my $value_name = $self->_value_needs_copy ? '$val' : '$_[1]'; |
d617b644 |
59 | |
55c361dc |
60 | $self->_compile_code('sub { ' . "\n" |
e27dfc11 |
61 | . $self->_inline_pre_body(@_) . "\n" |
e7c06c1e |
62 | . 'if (scalar(@_) >= 2) {' . "\n" |
ac211120 |
63 | . $self->_inline_copy_value . "\n" |
e27dfc11 |
64 | . $self->_inline_check_required . "\n" |
641e2264 |
65 | . $self->_inline_check_coercion($value_name) . "\n" |
e27dfc11 |
66 | . $self->_inline_check_constraint($value_name) . "\n" |
3dda07f5 |
67 | . $self->_inline_get_old_value_for_trigger($inv, $value_name) . "\n" |
32dd4a95 |
68 | . $self->_inline_store($inv, $value_name) . "\n" |
3dda07f5 |
69 | . $self->_inline_trigger($inv, $value_name, '@old') . "\n" |
e27dfc11 |
70 | . ' }' . "\n" |
e606ae5f |
71 | . $self->_inline_check_lazy($inv) . "\n" |
e27dfc11 |
72 | . $self->_inline_post_body(@_) . "\n" |
73 | . 'return ' . $self->_inline_auto_deref($self->_inline_get($inv)) . "\n" |
c9183ffc |
74 | . ' }'); |
d617b644 |
75 | } |
76 | |
6a4a7c31 |
77 | sub _generate_writer_method_inline { |
3ccdc84a |
78 | my $self = $_[0]; |
3ccdc84a |
79 | my $inv = '$_[0]'; |
ac211120 |
80 | my $value_name = $self->_value_needs_copy ? '$val' : '$_[1]'; |
3ccdc84a |
81 | |
55c361dc |
82 | $self->_compile_code('sub { ' |
c350159f |
83 | . $self->_inline_pre_body(@_) |
ac211120 |
84 | . $self->_inline_copy_value |
d617b644 |
85 | . $self->_inline_check_required |
641e2264 |
86 | . $self->_inline_check_coercion($value_name) |
32dd4a95 |
87 | . $self->_inline_check_constraint($value_name) |
3dda07f5 |
88 | . $self->_inline_get_old_value_for_trigger($inv, $value_name) . "\n" |
32dd4a95 |
89 | . $self->_inline_store($inv, $value_name) |
90 | . $self->_inline_post_body(@_) |
3dda07f5 |
91 | . $self->_inline_trigger($inv, $value_name, '@old') |
c9183ffc |
92 | . ' }'); |
d617b644 |
93 | } |
94 | |
6a4a7c31 |
95 | sub _generate_reader_method_inline { |
3ccdc84a |
96 | my $self = $_[0]; |
3ccdc84a |
97 | my $inv = '$_[0]'; |
95d922a2 |
98 | my $slot_access = $self->_inline_get($inv); |
26fbace8 |
99 | |
55c361dc |
100 | $self->_compile_code('sub {' |
c350159f |
101 | . $self->_inline_pre_body(@_) |
cee532a1 |
102 | . $self->_inline_throw_error('"Cannot assign a value to a read-only accessor"', 'data => \@_') . ' if @_ > 1;' |
e606ae5f |
103 | . $self->_inline_check_lazy($inv) |
c350159f |
104 | . $self->_inline_post_body(@_) |
3ccdc84a |
105 | . 'return ' . $self->_inline_auto_deref( $slot_access ) . ';' |
c9183ffc |
106 | . '}'); |
d617b644 |
107 | } |
108 | |
ac211120 |
109 | sub _inline_copy_value { |
110 | return '' unless shift->_value_needs_copy; |
111 | return 'my $val = $_[1];' |
112 | } |
113 | |
114 | sub _value_needs_copy { |
115 | my $attr = (shift)->associated_attribute; |
116 | return $attr->should_coerce; |
117 | } |
118 | |
f001c60f |
119 | sub _instance_is_inlinable { |
120 | my $self = shift; |
121 | return $self->associated_attribute->associated_class->instance_metaclass->is_inlinable; |
122 | } |
123 | |
124 | sub _generate_reader_method { |
125 | my $self = shift; |
126 | $self->_instance_is_inlinable ? $self->_generate_reader_method_inline(@_) |
127 | : $self->SUPER::_generate_reader_method(@_); |
128 | } |
129 | |
130 | sub _generate_writer_method { |
131 | my $self = shift; |
132 | $self->_instance_is_inlinable ? $self->_generate_writer_method_inline(@_) |
133 | : $self->SUPER::_generate_writer_method(@_); |
134 | } |
135 | |
136 | sub _generate_accessor_method { |
137 | my $self = shift; |
138 | $self->_instance_is_inlinable ? $self->_generate_accessor_method_inline(@_) |
139 | : $self->SUPER::_generate_accessor_method(@_); |
140 | } |
141 | |
142 | sub _generate_predicate_method { |
143 | my $self = shift; |
144 | $self->_instance_is_inlinable ? $self->_generate_predicate_method_inline(@_) |
145 | : $self->SUPER::_generate_predicate_method(@_); |
146 | } |
147 | |
148 | sub _generate_clearer_method { |
149 | my $self = shift; |
150 | $self->_instance_is_inlinable ? $self->_generate_clearer_method_inline(@_) |
151 | : $self->SUPER::_generate_clearer_method(@_); |
152 | } |
8ecb1fa0 |
153 | |
3ccdc84a |
154 | sub _inline_pre_body { '' } |
c350159f |
155 | sub _inline_post_body { '' } |
156 | |
d617b644 |
157 | sub _inline_check_constraint { |
97e11ef5 |
158 | my ($self, $value) = @_; |
d03bd989 |
159 | |
97e11ef5 |
160 | my $attr = $self->associated_attribute; |
d03bd989 |
161 | |
97e11ef5 |
162 | return '' unless $attr->has_type_constraint; |
d03bd989 |
163 | |
95d922a2 |
164 | my $attr_name = quotemeta( $attr->name ); |
8bb7da15 |
165 | |
cee532a1 |
166 | qq{\$type_constraint->($value) || } . $self->_inline_throw_error(qq{"Attribute ($attr_name) does not pass the type constraint because: " . \$type_constraint_obj->get_message($value)}, "data => $value") . ";"; |
d617b644 |
167 | } |
168 | |
169 | sub _inline_check_coercion { |
641e2264 |
170 | my ($self, $value) = @_; |
171 | |
172 | my $attr = $self->associated_attribute; |
d03bd989 |
173 | |
bb8afe3d |
174 | return '' unless $attr->should_coerce && $attr->type_constraint->has_coercion; |
641e2264 |
175 | return "$value = \$attr->type_constraint->coerce($value);"; |
d617b644 |
176 | } |
177 | |
178 | sub _inline_check_required { |
cee532a1 |
179 | my $self = shift; |
180 | my $attr = $self->associated_attribute; |
8bb7da15 |
181 | |
97e11ef5 |
182 | return '' unless $attr->is_required; |
95d922a2 |
183 | |
184 | my $attr_name = quotemeta( $attr->name ); |
185 | |
cee532a1 |
186 | return qq{(\@_ >= 2) || } . $self->_inline_throw_error(qq{"Attribute ($attr_name) is required, so cannot be set to undef"}) . ';' # defined $_[1] is not good enough |
d617b644 |
187 | } |
188 | |
189 | sub _inline_check_lazy { |
e606ae5f |
190 | my ($self, $instance) = @_; |
191 | |
26fbace8 |
192 | my $attr = $self->associated_attribute; |
193 | |
3822d5ee |
194 | return '' unless $attr->is_lazy; |
26fbace8 |
195 | |
95d922a2 |
196 | my $slot_exists = $self->_inline_has($instance); |
3822d5ee |
197 | |
198 | my $code = 'unless (' . $slot_exists . ') {' . "\n"; |
199 | if ($attr->has_type_constraint) { |
97e11ef5 |
200 | if ($attr->has_default || $attr->has_builder) { |
201 | if ($attr->has_default) { |
e606ae5f |
202 | $code .= ' my $default = $attr->default(' . $instance . ');'."\n"; |
d03bd989 |
203 | } |
97e11ef5 |
204 | elsif ($attr->has_builder) { |
3822d5ee |
205 | $code .= ' my $default;'."\n". |
e606ae5f |
206 | ' if(my $builder = '.$instance.'->can($attr->builder)){ '."\n". |
207 | ' $default = '.$instance.'->$builder; '. "\n } else {\n" . |
208 | ' ' . $self->_inline_throw_error(q{sprintf "%s does not support builder method '%s' for attribute '%s'", ref(} . $instance . ') || '.$instance.', $attr->builder, $attr->name') . |
209 | ';'. "\n }"; |
3822d5ee |
210 | } |
641e2264 |
211 | $code .= $self->_inline_check_coercion('$default') . "\n"; |
7a431e9c |
212 | $code .= $self->_inline_check_constraint('$default', 'lazy') . "\n"; |
909405b8 |
213 | $code .= ' ' . $self->_inline_init_slot($attr, $instance, '$default') . "\n"; |
d03bd989 |
214 | } |
97e11ef5 |
215 | else { |
909405b8 |
216 | $code .= ' ' . $self->_inline_init_slot($attr, $instance, 'undef') . "\n"; |
26fbace8 |
217 | } |
218 | |
3822d5ee |
219 | } else { |
97e11ef5 |
220 | if ($attr->has_default) { |
909405b8 |
221 | $code .= ' ' . $self->_inline_init_slot($attr, $instance, ('$attr->default(' . $instance . ')')) . "\n"; |
d03bd989 |
222 | } |
97e11ef5 |
223 | elsif ($attr->has_builder) { |
d03bd989 |
224 | $code .= ' if (my $builder = '.$instance.'->can($attr->builder)) { ' . "\n" |
909405b8 |
225 | . ' ' . $self->_inline_init_slot($attr, $instance, ($instance . '->$builder')) |
e606ae5f |
226 | . "\n } else {\n" |
227 | . ' ' . $self->_inline_throw_error(q{sprintf "%s does not support builder method '%s' for attribute '%s'", ref(} . $instance . ') || '.$instance.', $attr->builder, $attr->name') |
228 | . ';'. "\n }"; |
d03bd989 |
229 | } |
97e11ef5 |
230 | else { |
909405b8 |
231 | $code .= ' ' . $self->_inline_init_slot($attr, $instance, 'undef') . "\n"; |
3822d5ee |
232 | } |
233 | } |
234 | $code .= "}\n"; |
235 | return $code; |
d617b644 |
236 | } |
237 | |
9df136d0 |
238 | sub _inline_init_slot { |
909405b8 |
239 | my ($self, $attr, $inv, $value) = @_; |
9df136d0 |
240 | if ($attr->has_initializer) { |
241 | return ('$attr->set_initial_value(' . $inv . ', ' . $value . ');'); |
242 | } |
243 | else { |
909405b8 |
244 | return $self->_inline_store($inv, $value); |
d03bd989 |
245 | } |
9df136d0 |
246 | } |
d617b644 |
247 | |
248 | sub _inline_store { |
d67398ab |
249 | my ( $self, $instance, $value ) = @_; |
d03bd989 |
250 | |
e06951bb |
251 | return $self->associated_attribute->inline_set( $instance, $value ); |
d617b644 |
252 | } |
253 | |
3dda07f5 |
254 | sub _inline_get_old_value_for_trigger { |
255 | my ( $self, $instance ) = @_; |
256 | |
257 | my $attr = $self->associated_attribute; |
258 | return '' unless $attr->has_trigger; |
259 | |
3dda07f5 |
260 | return |
261 | 'my @old = ' |
d67398ab |
262 | . $self->_inline_has($instance) . q{ ? } |
3dda07f5 |
263 | . $self->_inline_get($instance) . q{ : ()} . ";\n"; |
264 | } |
265 | |
d617b644 |
266 | sub _inline_trigger { |
3dda07f5 |
267 | my ($self, $instance, $value, $old_value) = @_; |
97e11ef5 |
268 | my $attr = $self->associated_attribute; |
269 | return '' unless $attr->has_trigger; |
3dda07f5 |
270 | return sprintf('$attr->trigger->(%s, %s, %s);', $instance, $value, $old_value); |
d617b644 |
271 | } |
272 | |
273 | sub _inline_get { |
97e11ef5 |
274 | my ($self, $instance) = @_; |
d03bd989 |
275 | |
d67398ab |
276 | return $self->associated_attribute->inline_get($instance); |
d617b644 |
277 | } |
278 | |
e27dfc11 |
279 | sub _inline_has { |
97e11ef5 |
280 | my ($self, $instance) = @_; |
e27dfc11 |
281 | |
d67398ab |
282 | return $self->associated_attribute->inline_has($instance); |
e27dfc11 |
283 | } |
284 | |
d617b644 |
285 | sub _inline_auto_deref { |
286 | my ( $self, $ref_value ) = @_; |
26fbace8 |
287 | my $attr = $self->associated_attribute; |
d617b644 |
288 | |
39b3bc94 |
289 | return $ref_value unless $attr->should_auto_deref; |
d617b644 |
290 | |
39b3bc94 |
291 | my $type_constraint = $attr->type_constraint; |
d617b644 |
292 | |
293 | my $sigil; |
294 | if ($type_constraint->is_a_type_of('ArrayRef')) { |
295 | $sigil = '@'; |
26fbace8 |
296 | } |
d617b644 |
297 | elsif ($type_constraint->is_a_type_of('HashRef')) { |
298 | $sigil = '%'; |
26fbace8 |
299 | } |
d617b644 |
300 | else { |
95d922a2 |
301 | $self->throw_error( "Can not auto de-reference the type constraint '" |
302 | . quotemeta( $type_constraint->name ) |
303 | . "'", type_constraint => $type_constraint ); |
d617b644 |
304 | } |
305 | |
306 | "(wantarray() ? $sigil\{ ( $ref_value ) || return } : ( $ref_value ) )"; |
307 | } |
8ee73eeb |
308 | |
309 | 1; |
310 | |
311 | __END__ |
312 | |
313 | =pod |
314 | |
39b3bc94 |
315 | =head1 NAME |
316 | |
ecb59493 |
317 | Moose::Meta::Method::Accessor - A Moose Method metaclass for accessors |
39b3bc94 |
318 | |
319 | =head1 DESCRIPTION |
320 | |
ba4dfb8e |
321 | This class is a subclass of L<Class::MOP::Method::Accessor> that |
73f769fc |
322 | provides additional Moose-specific functionality, all of which is |
323 | private. |
ecb59493 |
324 | |
73f769fc |
325 | To understand this class, you should read the the |
ba4dfb8e |
326 | L<Class::MOP::Method::Accessor> documentation. |
39b3bc94 |
327 | |
328 | =head1 BUGS |
329 | |
d4048ef3 |
330 | See L<Moose/BUGS> for details on reporting bugs. |
39b3bc94 |
331 | |
332 | =head1 AUTHOR |
333 | |
334 | Stevan Little E<lt>stevan@iinteractive.comE<gt> |
335 | |
336 | Yuval Kogman E<lt>nothingmuch@woobling.comE<gt> |
337 | |
338 | =head1 COPYRIGHT AND LICENSE |
339 | |
7e0492d3 |
340 | Copyright 2006-2010 by Infinity Interactive, Inc. |
39b3bc94 |
341 | |
342 | L<http://www.iinteractive.com> |
343 | |
344 | This library is free software; you can redistribute it and/or modify |
345 | it under the same terms as Perl itself. |
346 | |
51308c23 |
347 | =cut |