Commit | Line | Data |
ccb38d0b |
1 | package Mouse::PurePerl; |
4bef84ef |
2 | # The pure Perl backend for Mouse |
6fffa617 |
3 | package Mouse::Util; |
df6dd016 |
4 | use strict; |
5 | use warnings; |
4bef84ef |
6 | use warnings FATAL => 'redefine'; # to avoid to load Mouse::PurePerl twice |
df6dd016 |
7 | |
18cab6b8 |
8 | use Scalar::Util (); |
df6dd016 |
9 | use B (); |
10 | |
4bef84ef |
11 | require Mouse::Util; |
12 | |
0ffc4183 |
13 | # taken from Class/MOP.pm |
14 | sub is_valid_class_name { |
15 | my $class = shift; |
16 | |
17 | return 0 if ref($class); |
18 | return 0 unless defined($class); |
19 | |
20 | return 1 if $class =~ /\A \w+ (?: :: \w+ )* \z/xms; |
21 | |
22 | return 0; |
23 | } |
24 | |
df6dd016 |
25 | sub is_class_loaded { |
26 | my $class = shift; |
27 | |
28 | return 0 if ref($class) || !defined($class) || !length($class); |
29 | |
30 | # walk the symbol table tree to avoid autovififying |
3bb9e54e |
31 | # \*{${main::}{"Foo::"}{"Bar::"}} == \*main::Foo::Bar:: |
df6dd016 |
32 | |
33 | my $pack = \%::; |
34 | foreach my $part (split('::', $class)) { |
3bb9e54e |
35 | $part .= '::'; |
36 | return 0 if !exists $pack->{$part}; |
37 | |
38 | my $entry = \$pack->{$part}; |
df6dd016 |
39 | return 0 if ref($entry) ne 'GLOB'; |
3bb9e54e |
40 | $pack = *{$entry}{HASH}; |
df6dd016 |
41 | } |
42 | |
3bb9e54e |
43 | return 0 if !%{$pack}; |
44 | |
df6dd016 |
45 | # check for $VERSION or @ISA |
46 | return 1 if exists $pack->{VERSION} |
47 | && defined *{$pack->{VERSION}}{SCALAR} && defined ${ $pack->{VERSION} }; |
48 | return 1 if exists $pack->{ISA} |
49 | && defined *{$pack->{ISA}}{ARRAY} && @{ $pack->{ISA} } != 0; |
50 | |
51 | # check for any method |
52 | foreach my $name( keys %{$pack} ) { |
53 | my $entry = \$pack->{$name}; |
54 | return 1 if ref($entry) ne 'GLOB' || defined *{$entry}{CODE}; |
55 | } |
56 | |
57 | # fail |
58 | return 0; |
59 | } |
60 | |
61 | |
62 | # taken from Sub::Identify |
63 | sub get_code_info { |
64 | my ($coderef) = @_; |
65 | ref($coderef) or return; |
66 | |
67 | my $cv = B::svref_2object($coderef); |
68 | $cv->isa('B::CV') or return; |
69 | |
70 | my $gv = $cv->GV; |
71 | $gv->isa('B::GV') or return; |
72 | |
73 | return ($gv->STASH->NAME, $gv->NAME); |
74 | } |
75 | |
76 | sub get_code_package{ |
77 | my($coderef) = @_; |
78 | |
79 | my $cv = B::svref_2object($coderef); |
80 | $cv->isa('B::CV') or return ''; |
81 | |
82 | my $gv = $cv->GV; |
83 | $gv->isa('B::GV') or return ''; |
84 | |
85 | return $gv->STASH->NAME; |
86 | } |
87 | |
7d96ae4d |
88 | sub get_code_ref{ |
89 | my($package, $name) = @_; |
90 | no strict 'refs'; |
91 | no warnings 'once'; |
92 | use warnings FATAL => 'uninitialized'; |
93 | return *{$package . '::' . $name}{CODE}; |
94 | } |
95 | |
e3540312 |
96 | sub generate_isa_predicate_for { |
1d5ecd5f |
97 | my($for_class, $name) = @_; |
98 | |
f48920c1 |
99 | my $predicate = sub{ Scalar::Util::blessed($_[0]) && $_[0]->isa($for_class) }; |
1d5ecd5f |
100 | |
101 | if(defined $name){ |
1194aede |
102 | Mouse::Util::install_subroutines(scalar caller, $name => $predicate); |
1d5ecd5f |
103 | return; |
104 | } |
105 | |
106 | return $predicate; |
107 | } |
108 | |
ebe91068 |
109 | sub generate_can_predicate_for { |
110 | my($methods_ref, $name) = @_; |
111 | |
112 | my @methods = @{$methods_ref}; |
113 | |
114 | my $predicate = sub{ |
115 | my($instance) = @_; |
116 | if(Scalar::Util::blessed($instance)){ |
117 | foreach my $method(@methods){ |
118 | if(!$instance->can($method)){ |
119 | return 0; |
120 | } |
121 | } |
122 | return 1; |
123 | } |
124 | return 0; |
125 | }; |
126 | |
127 | if(defined $name){ |
1194aede |
128 | Mouse::Util::install_subroutines(scalar caller, $name => $predicate); |
ebe91068 |
129 | return; |
130 | } |
131 | |
132 | return $predicate; |
133 | } |
1d5ecd5f |
134 | |
6fffa617 |
135 | package Mouse::Util::TypeConstraints; |
f48920c1 |
136 | |
f48920c1 |
137 | |
7d96ae4d |
138 | sub Any { 1 } |
139 | sub Item { 1 } |
7d96ae4d |
140 | |
18cab6b8 |
141 | sub Bool { !$_[0] || $_[0] eq '1' } |
7d96ae4d |
142 | sub Undef { !defined($_[0]) } |
143 | sub Defined { defined($_[0]) } |
144 | sub Value { defined($_[0]) && !ref($_[0]) } |
1d76ae62 |
145 | sub Num { Scalar::Util::looks_like_number($_[0]) } |
9848d3e1 |
146 | sub Str { |
4b58033d |
147 | # We need to use a copy here to flatten MAGICs, for instance as in |
148 | # Str( substr($_, 0, 42) ). |
9848d3e1 |
149 | my($value) = @_; |
150 | return defined($value) && ref(\$value) eq 'SCALAR'; |
151 | } |
4b58033d |
152 | sub Int { |
153 | # We need to use a copy here to save the original internal SV flags. |
154 | my($value) = @_; |
155 | return defined($value) && $value =~ /\A -? [0-9]+ \z/xms; |
156 | } |
7d96ae4d |
157 | |
158 | sub Ref { ref($_[0]) } |
9848d3e1 |
159 | sub ScalarRef { |
160 | my($value) = @_; |
4068a8f6 |
161 | return ref($value) eq 'SCALAR' || ref($value) eq 'REF'; |
9848d3e1 |
162 | } |
7d96ae4d |
163 | sub ArrayRef { ref($_[0]) eq 'ARRAY' } |
164 | sub HashRef { ref($_[0]) eq 'HASH' } |
165 | sub CodeRef { ref($_[0]) eq 'CODE' } |
166 | sub RegexpRef { ref($_[0]) eq 'Regexp' } |
167 | sub GlobRef { ref($_[0]) eq 'GLOB' } |
168 | |
169 | sub FileHandle { |
1d76ae62 |
170 | my($value) = @_; |
171 | return Scalar::Util::openhandle($value) |
172 | || (Scalar::Util::blessed($value) && $value->isa("IO::Handle")) |
7d96ae4d |
173 | } |
174 | |
1d76ae62 |
175 | sub Object { Scalar::Util::blessed($_[0]) && ref($_[0]) ne 'Regexp' } |
7d96ae4d |
176 | |
177 | sub ClassName { Mouse::Util::is_class_loaded($_[0]) } |
178 | sub RoleName { (Mouse::Util::class_of($_[0]) || return 0)->isa('Mouse::Meta::Role') } |
179 | |
619338ac |
180 | sub _parameterize_ArrayRef_for { |
181 | my($type_parameter) = @_; |
182 | my $check = $type_parameter->_compiled_type_constraint; |
183 | |
184 | return sub { |
185 | foreach my $value (@{$_}) { |
186 | return undef unless $check->($value); |
187 | } |
188 | return 1; |
189 | } |
190 | } |
191 | |
192 | sub _parameterize_HashRef_for { |
193 | my($type_parameter) = @_; |
194 | my $check = $type_parameter->_compiled_type_constraint; |
195 | |
196 | return sub { |
197 | foreach my $value(values %{$_}){ |
198 | return undef unless $check->($value); |
199 | } |
200 | return 1; |
201 | }; |
202 | } |
203 | |
204 | # 'Maybe' type accepts 'Any', so it requires parameters |
205 | sub _parameterize_Maybe_for { |
206 | my($type_parameter) = @_; |
207 | my $check = $type_parameter->_compiled_type_constraint; |
208 | |
209 | return sub{ |
210 | return !defined($_) || $check->($_); |
211 | }; |
9b923ac8 |
212 | } |
7d96ae4d |
213 | |
6fffa617 |
214 | package Mouse::Meta::Module; |
43165725 |
215 | |
926404f2 |
216 | sub name { $_[0]->{package} } |
217 | |
218 | sub _method_map { $_[0]->{methods} } |
c5f6ad05 |
219 | sub _attribute_map{ $_[0]->{attributes} } |
43165725 |
220 | |
2591e962 |
221 | sub namespace{ |
222 | my $name = $_[0]->{package}; |
223 | no strict 'refs'; |
224 | return \%{ $name . '::' }; |
225 | } |
226 | |
3e44140b |
227 | sub add_method { |
228 | my($self, $name, $code) = @_; |
229 | |
230 | if(!defined $name){ |
231 | $self->throw_error('You must pass a defined name'); |
232 | } |
233 | if(!defined $code){ |
234 | $self->throw_error('You must pass a defined code'); |
235 | } |
236 | |
237 | if(ref($code) ne 'CODE'){ |
238 | $code = \&{$code}; # coerce |
239 | } |
240 | |
241 | $self->{methods}->{$name} = $code; # Moose stores meta object here. |
242 | |
1194aede |
243 | Mouse::Util::install_subroutines($self->name, |
244 | $name => $code, |
245 | ); |
3e44140b |
246 | return; |
247 | } |
248 | |
b4dc9315 |
249 | my $generate_class_accessor = sub { |
250 | my($name) = @_; |
251 | return sub { |
252 | my $self = shift; |
253 | if(@_) { |
254 | return $self->{$name} = shift; |
255 | } |
256 | |
257 | foreach my $class($self->linearized_isa) { |
258 | my $meta = Mouse::Util::get_metaclass_by_name($class) |
259 | or next; |
260 | |
261 | if(exists $meta->{$name}) { |
262 | return $meta->{$name}; |
263 | } |
264 | } |
265 | return undef; |
266 | }; |
267 | }; |
268 | |
269 | |
6fffa617 |
270 | package Mouse::Meta::Class; |
43165725 |
271 | |
e088c5fc |
272 | use Mouse::Meta::Method::Constructor; |
273 | use Mouse::Meta::Method::Destructor; |
274 | |
e058b279 |
275 | sub method_metaclass { $_[0]->{method_metaclass} || 'Mouse::Meta::Method' } |
276 | sub attribute_metaclass { $_[0]->{attribute_metaclass} || 'Mouse::Meta::Attribute' } |
277 | |
278 | sub constructor_class { $_[0]->{constructor_class} || 'Mouse::Meta::Method::Constructor' } |
279 | sub destructor_class { $_[0]->{destructor_class} || 'Mouse::Meta::Method::Destructor' } |
4e7e3250 |
280 | |
43165725 |
281 | sub is_anon_class{ |
282 | return exists $_[0]->{anon_serial_id}; |
283 | } |
284 | |
285 | sub roles { $_[0]->{roles} } |
286 | |
bc76ed1c |
287 | sub linearized_isa { @{ Mouse::Util::get_linear_isa($_[0]->{package}) } } |
cccb83de |
288 | |
ba153b33 |
289 | sub new_object { |
b5956f03 |
290 | my $meta = shift; |
ba153b33 |
291 | my %args = (@_ == 1 ? %{$_[0]} : @_); |
292 | |
b5956f03 |
293 | my $object = bless {}, $meta->name; |
ba153b33 |
294 | |
a3a09e38 |
295 | $meta->_initialize_object($object, \%args, 0); |
b5956f03 |
296 | # BUILDALL |
297 | if( $object->can('BUILD') ) { |
298 | for my $class (reverse $meta->linearized_isa) { |
299 | my $build = Mouse::Util::get_code_ref($class, 'BUILD') |
300 | || next; |
301 | |
302 | $object->$build(\%args); |
303 | } |
304 | } |
ba153b33 |
305 | return $object; |
306 | } |
307 | |
13b99908 |
308 | sub clone_object { |
309 | my $class = shift; |
310 | my $object = shift; |
311 | my $args = $object->Mouse::Object::BUILDARGS(@_); |
312 | |
1d76ae62 |
313 | (Scalar::Util::blessed($object) && $object->isa($class->name)) |
13b99908 |
314 | || $class->throw_error("You must pass an instance of the metaclass (" . $class->name . "), not ($object)"); |
315 | |
316 | my $cloned = bless { %$object }, ref $object; |
317 | $class->_initialize_object($cloned, $args, 1); |
13b99908 |
318 | return $cloned; |
319 | } |
320 | |
4e7e3250 |
321 | sub _initialize_object{ |
cb6a9721 |
322 | my($self, $object, $args, $is_cloning) = @_; |
74de0f8b |
323 | # The initializer, which is used everywhere, must be clear |
324 | # when an attribute is added. See Mouse::Meta::Class::add_attribute. |
abbcd124 |
325 | my $initializer = $self->{_mouse_cache}{_initialize_object} ||= |
a3a09e38 |
326 | Mouse::Util::load_class($self->constructor_class) |
327 | ->_generate_initialize_object($self); |
a3a09e38 |
328 | goto &{$initializer}; |
4e7e3250 |
329 | } |
330 | |
abbcd124 |
331 | sub get_all_attributes { |
332 | my($self) = @_; |
333 | return @{ $self->{_mouse_cache}{all_attributes} |
334 | ||= $self->_calculate_all_attributes }; |
335 | } |
336 | |
80efe911 |
337 | sub is_immutable { $_[0]->{is_immutable} } |
4e7e3250 |
338 | |
823419c5 |
339 | sub strict_constructor; |
340 | *strict_constructor = $generate_class_accessor->('strict_constructor'); |
fb4ddd88 |
341 | |
6f09819f |
342 | sub _invalidate_metaclass_cache { |
343 | my($self) = @_; |
344 | delete $self->{_mouse_cache}; |
345 | return; |
346 | } |
347 | |
fb4ddd88 |
348 | sub _report_unknown_args { |
349 | my($metaclass, $attrs, $args) = @_; |
350 | |
351 | my @unknowns; |
352 | my %init_args; |
353 | foreach my $attr(@{$attrs}){ |
354 | my $init_arg = $attr->init_arg; |
355 | if(defined $init_arg){ |
356 | $init_args{$init_arg}++; |
357 | } |
358 | } |
359 | |
360 | while(my $key = each %{$args}){ |
361 | if(!exists $init_args{$key}){ |
362 | push @unknowns, $key; |
363 | } |
364 | } |
365 | |
366 | $metaclass->throw_error( sprintf |
367 | "Unknown attribute passed to the constructor of %s: %s", |
368 | $metaclass->name, Mouse::Util::english_list(@unknowns), |
369 | ); |
370 | } |
e128626c |
371 | |
6fffa617 |
372 | package Mouse::Meta::Role; |
43165725 |
373 | |
e058b279 |
374 | sub method_metaclass{ $_[0]->{method_metaclass} || 'Mouse::Meta::Role::Method' } |
375 | |
43165725 |
376 | sub is_anon_role{ |
377 | return exists $_[0]->{anon_serial_id}; |
378 | } |
379 | |
380 | sub get_roles { $_[0]->{roles} } |
381 | |
cb60d0b5 |
382 | sub add_before_method_modifier { |
383 | my ($self, $method_name, $method) = @_; |
384 | |
385 | push @{ $self->{before_method_modifiers}{$method_name} ||= [] }, $method; |
386 | return; |
387 | } |
388 | sub add_around_method_modifier { |
389 | my ($self, $method_name, $method) = @_; |
390 | |
391 | push @{ $self->{around_method_modifiers}{$method_name} ||= [] }, $method; |
392 | return; |
393 | } |
394 | sub add_after_method_modifier { |
395 | my ($self, $method_name, $method) = @_; |
396 | |
397 | push @{ $self->{after_method_modifiers}{$method_name} ||= [] }, $method; |
398 | return; |
399 | } |
400 | |
401 | sub get_before_method_modifiers { |
402 | my ($self, $method_name) = @_; |
403 | return @{ $self->{before_method_modifiers}{$method_name} ||= [] } |
404 | } |
405 | sub get_around_method_modifiers { |
406 | my ($self, $method_name) = @_; |
407 | return @{ $self->{around_method_modifiers}{$method_name} ||= [] } |
408 | } |
409 | sub get_after_method_modifiers { |
410 | my ($self, $method_name) = @_; |
411 | return @{ $self->{after_method_modifiers}{$method_name} ||= [] } |
412 | } |
413 | |
b4dc9315 |
414 | sub add_metaclass_accessor { # for meta roles (a.k.a. traits) |
415 | my($meta, $name) = @_; |
416 | $meta->add_method($name => $generate_class_accessor->($name)); |
417 | return; |
418 | } |
419 | |
6fffa617 |
420 | package Mouse::Meta::Attribute; |
43165725 |
421 | |
e058b279 |
422 | require Mouse::Meta::Method::Accessor; |
423 | |
424 | sub accessor_metaclass{ $_[0]->{accessor_metaclass} || 'Mouse::Meta::Method::Accessor' } |
43165725 |
425 | |
426 | # readers |
427 | |
428 | sub name { $_[0]->{name} } |
429 | sub associated_class { $_[0]->{associated_class} } |
430 | |
431 | sub accessor { $_[0]->{accessor} } |
432 | sub reader { $_[0]->{reader} } |
433 | sub writer { $_[0]->{writer} } |
434 | sub predicate { $_[0]->{predicate} } |
435 | sub clearer { $_[0]->{clearer} } |
436 | sub handles { $_[0]->{handles} } |
437 | |
438 | sub _is_metadata { $_[0]->{is} } |
439 | sub is_required { $_[0]->{required} } |
440 | sub default { $_[0]->{default} } |
441 | sub is_lazy { $_[0]->{lazy} } |
442 | sub is_lazy_build { $_[0]->{lazy_build} } |
443 | sub is_weak_ref { $_[0]->{weak_ref} } |
444 | sub init_arg { $_[0]->{init_arg} } |
445 | sub type_constraint { $_[0]->{type_constraint} } |
446 | |
447 | sub trigger { $_[0]->{trigger} } |
448 | sub builder { $_[0]->{builder} } |
449 | sub should_auto_deref { $_[0]->{auto_deref} } |
450 | sub should_coerce { $_[0]->{coerce} } |
451 | |
d899d3e7 |
452 | sub documentation { $_[0]->{documentation} } |
beb51b30 |
453 | sub insertion_order { $_[0]->{insertion_order} } |
d899d3e7 |
454 | |
43165725 |
455 | # predicates |
456 | |
457 | sub has_accessor { exists $_[0]->{accessor} } |
458 | sub has_reader { exists $_[0]->{reader} } |
459 | sub has_writer { exists $_[0]->{writer} } |
460 | sub has_predicate { exists $_[0]->{predicate} } |
461 | sub has_clearer { exists $_[0]->{clearer} } |
462 | sub has_handles { exists $_[0]->{handles} } |
463 | |
464 | sub has_default { exists $_[0]->{default} } |
465 | sub has_type_constraint { exists $_[0]->{type_constraint} } |
466 | sub has_trigger { exists $_[0]->{trigger} } |
467 | sub has_builder { exists $_[0]->{builder} } |
468 | |
d899d3e7 |
469 | sub has_documentation { exists $_[0]->{documentation} } |
470 | |
ba1f50a2 |
471 | sub _process_options{ |
472 | my($class, $name, $args) = @_; |
473 | |
474 | # taken from Class::MOP::Attribute::new |
475 | |
476 | defined($name) |
477 | or $class->throw_error('You must provide a name for the attribute'); |
478 | |
479 | if(!exists $args->{init_arg}){ |
480 | $args->{init_arg} = $name; |
481 | } |
482 | |
483 | # 'required' requires eigher 'init_arg', 'builder', or 'default' |
484 | my $can_be_required = defined( $args->{init_arg} ); |
485 | |
486 | if(exists $args->{builder}){ |
487 | # XXX: |
488 | # Moose refuses a CODE ref builder, but Mouse doesn't for backward compatibility |
489 | # This feature will be changed in a future. (gfx) |
490 | $class->throw_error('builder must be a defined scalar value which is a method name') |
491 | #if ref $args->{builder} || !defined $args->{builder}; |
492 | if !defined $args->{builder}; |
493 | |
494 | $can_be_required++; |
495 | } |
496 | elsif(exists $args->{default}){ |
497 | if(ref $args->{default} && ref($args->{default}) ne 'CODE'){ |
498 | $class->throw_error("References are not allowed as default values, you must " |
499 | . "wrap the default of '$name' in a CODE reference (ex: sub { [] } and not [])"); |
500 | } |
501 | $can_be_required++; |
502 | } |
503 | |
504 | if( $args->{required} && !$can_be_required ) { |
505 | $class->throw_error("You cannot have a required attribute ($name) without a default, builder, or an init_arg"); |
506 | } |
507 | |
508 | # taken from Mouse::Meta::Attribute->new and ->_process_args |
509 | |
510 | if(exists $args->{is}){ |
511 | my $is = $args->{is}; |
512 | |
513 | if($is eq 'ro'){ |
514 | $args->{reader} ||= $name; |
515 | } |
516 | elsif($is eq 'rw'){ |
517 | if(exists $args->{writer}){ |
518 | $args->{reader} ||= $name; |
519 | } |
520 | else{ |
521 | $args->{accessor} ||= $name; |
522 | } |
523 | } |
524 | elsif($is eq 'bare'){ |
525 | # do nothing, but don't complain (later) about missing methods |
526 | } |
527 | else{ |
528 | $is = 'undef' if !defined $is; |
529 | $class->throw_error("I do not understand this option (is => $is) on attribute ($name)"); |
530 | } |
531 | } |
532 | |
533 | my $tc; |
534 | if(exists $args->{isa}){ |
d503a4f3 |
535 | $tc = $args->{type_constraint} = Mouse::Util::TypeConstraints::find_or_create_isa_type_constraint($args->{isa}); |
ba1f50a2 |
536 | } |
d503a4f3 |
537 | |
538 | if(exists $args->{does}){ |
539 | if(defined $tc){ # both isa and does supplied |
540 | my $does_ok = do{ |
541 | local $@; |
e972d1c9 |
542 | eval{ "$tc"->does($args->{does}) }; |
d503a4f3 |
543 | }; |
544 | if(!$does_ok){ |
545 | $class->throw_error("Cannot have both an isa option and a does option because '$tc' does not do '$args->{does}' on attribute ($name)"); |
546 | } |
547 | } |
548 | else { |
549 | $tc = $args->{type_constraint} = Mouse::Util::TypeConstraints::find_or_create_does_type_constraint($args->{does}); |
550 | } |
ba1f50a2 |
551 | } |
ba1f50a2 |
552 | |
553 | if($args->{coerce}){ |
554 | defined($tc) |
555 | || $class->throw_error("You cannot have coercion without specifying a type constraint on attribute ($name)"); |
556 | |
557 | $args->{weak_ref} |
558 | && $class->throw_error("You cannot have a weak reference to a coerced value on attribute ($name)"); |
559 | } |
560 | |
561 | if ($args->{lazy_build}) { |
562 | exists($args->{default}) |
563 | && $class->throw_error("You can not use lazy_build and default for the same attribute ($name)"); |
564 | |
565 | $args->{lazy} = 1; |
566 | $args->{builder} ||= "_build_${name}"; |
567 | if ($name =~ /^_/) { |
568 | $args->{clearer} ||= "_clear${name}"; |
569 | $args->{predicate} ||= "_has${name}"; |
570 | } |
571 | else { |
572 | $args->{clearer} ||= "clear_${name}"; |
573 | $args->{predicate} ||= "has_${name}"; |
574 | } |
575 | } |
576 | |
577 | if ($args->{auto_deref}) { |
578 | defined($tc) |
579 | || $class->throw_error("You cannot auto-dereference without specifying a type constraint on attribute ($name)"); |
580 | |
581 | ( $tc->is_a_type_of('ArrayRef') || $tc->is_a_type_of('HashRef') ) |
582 | || $class->throw_error("You cannot auto-dereference anything other than a ArrayRef or HashRef on attribute ($name)"); |
583 | } |
584 | |
585 | if (exists $args->{trigger}) { |
586 | ('CODE' eq ref $args->{trigger}) |
587 | || $class->throw_error("Trigger must be a CODE ref on attribute ($name)"); |
588 | } |
589 | |
590 | if ($args->{lazy}) { |
591 | (exists $args->{default} || defined $args->{builder}) |
2c689df4 |
592 | || $class->throw_error("You cannot have a lazy attribute ($name) without specifying a default value for it"); |
ba1f50a2 |
593 | } |
594 | |
595 | return; |
596 | } |
597 | |
598 | |
6fffa617 |
599 | package Mouse::Meta::TypeConstraint; |
43165725 |
600 | |
6e647cac |
601 | use overload |
602 | '""' => '_as_string', |
b4dc9315 |
603 | '0+' => '_identity', |
6e647cac |
604 | '|' => '_unite', |
605 | |
606 | fallback => 1; |
607 | |
43165725 |
608 | sub name { $_[0]->{name} } |
609 | sub parent { $_[0]->{parent} } |
610 | sub message { $_[0]->{message} } |
611 | |
f6c81f00 |
612 | sub _identity { Scalar::Util::refaddr($_[0]) } # overload 0+ |
613 | |
72dc2c9d |
614 | sub type_parameter { $_[0]->{type_parameter} } |
43165725 |
615 | sub _compiled_type_constraint{ $_[0]->{compiled_type_constraint} } |
93540011 |
616 | sub _compiled_type_coercion { $_[0]->{_compiled_type_coercion} } |
df6dd016 |
617 | |
72dc2c9d |
618 | sub __is_parameterized { exists $_[0]->{type_parameter} } |
619 | sub has_coercion { exists $_[0]->{_compiled_type_coercion} } |
df6dd016 |
620 | |
f790c46b |
621 | |
622 | sub compile_type_constraint{ |
623 | my($self) = @_; |
624 | |
625 | # add parents first |
626 | my @checks; |
627 | for(my $parent = $self->{parent}; defined $parent; $parent = $parent->{parent}){ |
628 | if($parent->{hand_optimized_type_constraint}){ |
629 | unshift @checks, $parent->{hand_optimized_type_constraint}; |
630 | last; # a hand optimized constraint must include all the parents |
631 | } |
632 | elsif($parent->{constraint}){ |
633 | unshift @checks, $parent->{constraint}; |
634 | } |
635 | } |
636 | |
637 | # then add child |
638 | if($self->{constraint}){ |
639 | push @checks, $self->{constraint}; |
640 | } |
641 | |
642 | if($self->{type_constraints}){ # Union |
643 | my @types = map{ $_->{compiled_type_constraint} } @{ $self->{type_constraints} }; |
644 | push @checks, sub{ |
645 | foreach my $c(@types){ |
646 | return 1 if $c->($_[0]); |
647 | } |
648 | return 0; |
649 | }; |
650 | } |
651 | |
652 | if(@checks == 0){ |
653 | $self->{compiled_type_constraint} = \&Mouse::Util::TypeConstraints::Any; |
654 | } |
655 | else{ |
656 | $self->{compiled_type_constraint} = sub{ |
657 | my(@args) = @_; |
658 | local $_ = $args[0]; |
659 | foreach my $c(@checks){ |
660 | return undef if !$c->(@args); |
661 | } |
662 | return 1; |
663 | }; |
664 | } |
665 | return; |
666 | } |
667 | |
c7576321 |
668 | sub check { |
669 | my $self = shift; |
670 | return $self->_compiled_type_constraint->(@_); |
671 | } |
672 | |
673 | |
6fffa617 |
674 | package Mouse::Object; |
aa2d2e2c |
675 | |
aa2d2e2c |
676 | sub BUILDARGS { |
677 | my $class = shift; |
f790c46b |
678 | |
aa2d2e2c |
679 | if (scalar @_ == 1) { |
680 | (ref($_[0]) eq 'HASH') |
681 | || $class->meta->throw_error("Single parameters to new() must be a HASH ref"); |
682 | |
683 | return {%{$_[0]}}; |
684 | } |
685 | else { |
686 | return {@_}; |
687 | } |
688 | } |
f790c46b |
689 | |
af04626d |
690 | sub new { |
691 | my $class = shift; |
c83feefa |
692 | my $args = $class->BUILDARGS(@_); |
693 | return $class->meta->new_object($args); |
af04626d |
694 | } |
695 | |
a5c683f6 |
696 | sub DESTROY { |
697 | my $self = shift; |
698 | |
699 | return unless $self->can('DEMOLISH'); # short circuit |
700 | |
a5c683f6 |
701 | my $e = do{ |
a3a09e38 |
702 | local $?; |
a5c683f6 |
703 | local $@; |
704 | eval{ |
a5c683f6 |
705 | # DEMOLISHALL |
706 | |
707 | # We cannot count on being able to retrieve a previously made |
708 | # metaclass, _or_ being able to make a new one during global |
709 | # destruction. However, we should still be able to use mro at |
710 | # that time (at least tests suggest so ;) |
711 | |
712 | foreach my $class (@{ Mouse::Util::get_linear_isa(ref $self) }) { |
713 | my $demolish = Mouse::Util::get_code_ref($class, 'DEMOLISH') |
714 | || next; |
715 | |
6514735e |
716 | $self->$demolish($Mouse::Util::in_global_destruction); |
a5c683f6 |
717 | } |
718 | }; |
719 | $@; |
720 | }; |
721 | |
722 | no warnings 'misc'; |
723 | die $e if $e; # rethrow |
724 | } |
725 | |
adb5eb76 |
726 | sub BUILDALL { |
727 | my $self = shift; |
728 | |
729 | # short circuit |
730 | return unless $self->can('BUILD'); |
731 | |
732 | for my $class (reverse $self->meta->linearized_isa) { |
733 | my $build = Mouse::Util::get_code_ref($class, 'BUILD') |
734 | || next; |
735 | |
736 | $self->$build(@_); |
737 | } |
738 | return; |
739 | } |
740 | |
741 | sub DEMOLISHALL; |
742 | *DEMOLISHALL = \&DESTROY; |
743 | |
df6dd016 |
744 | 1; |
745 | __END__ |
ccb38d0b |
746 | |
747 | =head1 NAME |
748 | |
749 | Mouse::PurePerl - A Mouse guts in pure Perl |
750 | |
751 | =head1 VERSION |
752 | |
420d69e8 |
753 | This document describes Mouse version 0.86 |
ccb38d0b |
754 | |
755 | =head1 SEE ALSO |
756 | |
757 | L<Mouse::XS> |
758 | |
759 | =cut |