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 | |
8 | use B (); |
9 | |
4bef84ef |
10 | require Mouse::Util; |
11 | |
0ffc4183 |
12 | |
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 | |
1d76ae62 |
137 | use Scalar::Util (); |
f48920c1 |
138 | |
7d96ae4d |
139 | sub Any { 1 } |
140 | sub Item { 1 } |
7d96ae4d |
141 | |
142 | sub Bool { $_[0] ? $_[0] eq '1' : 1 } |
143 | sub Undef { !defined($_[0]) } |
144 | sub Defined { defined($_[0]) } |
145 | sub Value { defined($_[0]) && !ref($_[0]) } |
1d76ae62 |
146 | sub Num { Scalar::Util::looks_like_number($_[0]) } |
9848d3e1 |
147 | sub Str { |
4b58033d |
148 | # We need to use a copy here to flatten MAGICs, for instance as in |
149 | # Str( substr($_, 0, 42) ). |
9848d3e1 |
150 | my($value) = @_; |
151 | return defined($value) && ref(\$value) eq 'SCALAR'; |
152 | } |
4b58033d |
153 | sub Int { |
154 | # We need to use a copy here to save the original internal SV flags. |
155 | my($value) = @_; |
156 | return defined($value) && $value =~ /\A -? [0-9]+ \z/xms; |
157 | } |
7d96ae4d |
158 | |
159 | sub Ref { ref($_[0]) } |
9848d3e1 |
160 | sub ScalarRef { |
161 | my($value) = @_; |
4068a8f6 |
162 | return ref($value) eq 'SCALAR' || ref($value) eq 'REF'; |
9848d3e1 |
163 | } |
7d96ae4d |
164 | sub ArrayRef { ref($_[0]) eq 'ARRAY' } |
165 | sub HashRef { ref($_[0]) eq 'HASH' } |
166 | sub CodeRef { ref($_[0]) eq 'CODE' } |
167 | sub RegexpRef { ref($_[0]) eq 'Regexp' } |
168 | sub GlobRef { ref($_[0]) eq 'GLOB' } |
169 | |
170 | sub FileHandle { |
1d76ae62 |
171 | my($value) = @_; |
172 | return Scalar::Util::openhandle($value) |
173 | || (Scalar::Util::blessed($value) && $value->isa("IO::Handle")) |
7d96ae4d |
174 | } |
175 | |
1d76ae62 |
176 | sub Object { Scalar::Util::blessed($_[0]) && ref($_[0]) ne 'Regexp' } |
7d96ae4d |
177 | |
178 | sub ClassName { Mouse::Util::is_class_loaded($_[0]) } |
179 | sub RoleName { (Mouse::Util::class_of($_[0]) || return 0)->isa('Mouse::Meta::Role') } |
180 | |
619338ac |
181 | sub _parameterize_ArrayRef_for { |
182 | my($type_parameter) = @_; |
183 | my $check = $type_parameter->_compiled_type_constraint; |
184 | |
185 | return sub { |
186 | foreach my $value (@{$_}) { |
187 | return undef unless $check->($value); |
188 | } |
189 | return 1; |
190 | } |
191 | } |
192 | |
193 | sub _parameterize_HashRef_for { |
194 | my($type_parameter) = @_; |
195 | my $check = $type_parameter->_compiled_type_constraint; |
196 | |
197 | return sub { |
198 | foreach my $value(values %{$_}){ |
199 | return undef unless $check->($value); |
200 | } |
201 | return 1; |
202 | }; |
203 | } |
204 | |
205 | # 'Maybe' type accepts 'Any', so it requires parameters |
206 | sub _parameterize_Maybe_for { |
207 | my($type_parameter) = @_; |
208 | my $check = $type_parameter->_compiled_type_constraint; |
209 | |
210 | return sub{ |
211 | return !defined($_) || $check->($_); |
212 | }; |
9b923ac8 |
213 | } |
7d96ae4d |
214 | |
6fffa617 |
215 | package Mouse::Meta::Module; |
43165725 |
216 | |
926404f2 |
217 | sub name { $_[0]->{package} } |
218 | |
219 | sub _method_map { $_[0]->{methods} } |
c5f6ad05 |
220 | sub _attribute_map{ $_[0]->{attributes} } |
43165725 |
221 | |
2591e962 |
222 | sub namespace{ |
223 | my $name = $_[0]->{package}; |
224 | no strict 'refs'; |
225 | return \%{ $name . '::' }; |
226 | } |
227 | |
3e44140b |
228 | sub add_method { |
229 | my($self, $name, $code) = @_; |
230 | |
231 | if(!defined $name){ |
232 | $self->throw_error('You must pass a defined name'); |
233 | } |
234 | if(!defined $code){ |
235 | $self->throw_error('You must pass a defined code'); |
236 | } |
237 | |
238 | if(ref($code) ne 'CODE'){ |
239 | $code = \&{$code}; # coerce |
240 | } |
241 | |
242 | $self->{methods}->{$name} = $code; # Moose stores meta object here. |
243 | |
1194aede |
244 | Mouse::Util::install_subroutines($self->name, |
245 | $name => $code, |
246 | ); |
3e44140b |
247 | return; |
248 | } |
249 | |
b4dc9315 |
250 | my $generate_class_accessor = sub { |
251 | my($name) = @_; |
252 | return sub { |
253 | my $self = shift; |
254 | if(@_) { |
255 | return $self->{$name} = shift; |
256 | } |
257 | |
258 | foreach my $class($self->linearized_isa) { |
259 | my $meta = Mouse::Util::get_metaclass_by_name($class) |
260 | or next; |
261 | |
262 | if(exists $meta->{$name}) { |
263 | return $meta->{$name}; |
264 | } |
265 | } |
266 | return undef; |
267 | }; |
268 | }; |
269 | |
270 | |
6fffa617 |
271 | package Mouse::Meta::Class; |
43165725 |
272 | |
e088c5fc |
273 | use Mouse::Meta::Method::Constructor; |
274 | use Mouse::Meta::Method::Destructor; |
275 | |
e058b279 |
276 | sub method_metaclass { $_[0]->{method_metaclass} || 'Mouse::Meta::Method' } |
277 | sub attribute_metaclass { $_[0]->{attribute_metaclass} || 'Mouse::Meta::Attribute' } |
278 | |
279 | sub constructor_class { $_[0]->{constructor_class} || 'Mouse::Meta::Method::Constructor' } |
280 | sub destructor_class { $_[0]->{destructor_class} || 'Mouse::Meta::Method::Destructor' } |
4e7e3250 |
281 | |
43165725 |
282 | sub is_anon_class{ |
283 | return exists $_[0]->{anon_serial_id}; |
284 | } |
285 | |
286 | sub roles { $_[0]->{roles} } |
287 | |
bc76ed1c |
288 | sub linearized_isa { @{ Mouse::Util::get_linear_isa($_[0]->{package}) } } |
cccb83de |
289 | |
ba153b33 |
290 | sub new_object { |
b5956f03 |
291 | my $meta = shift; |
ba153b33 |
292 | my %args = (@_ == 1 ? %{$_[0]} : @_); |
293 | |
b5956f03 |
294 | my $object = bless {}, $meta->name; |
ba153b33 |
295 | |
a3a09e38 |
296 | $meta->_initialize_object($object, \%args, 0); |
b5956f03 |
297 | # BUILDALL |
298 | if( $object->can('BUILD') ) { |
299 | for my $class (reverse $meta->linearized_isa) { |
300 | my $build = Mouse::Util::get_code_ref($class, 'BUILD') |
301 | || next; |
302 | |
303 | $object->$build(\%args); |
304 | } |
305 | } |
ba153b33 |
306 | return $object; |
307 | } |
308 | |
13b99908 |
309 | sub clone_object { |
310 | my $class = shift; |
311 | my $object = shift; |
312 | my $args = $object->Mouse::Object::BUILDARGS(@_); |
313 | |
1d76ae62 |
314 | (Scalar::Util::blessed($object) && $object->isa($class->name)) |
13b99908 |
315 | || $class->throw_error("You must pass an instance of the metaclass (" . $class->name . "), not ($object)"); |
316 | |
317 | my $cloned = bless { %$object }, ref $object; |
318 | $class->_initialize_object($cloned, $args, 1); |
13b99908 |
319 | return $cloned; |
320 | } |
321 | |
4e7e3250 |
322 | sub _initialize_object{ |
cb6a9721 |
323 | my($self, $object, $args, $is_cloning) = @_; |
74de0f8b |
324 | # The initializer, which is used everywhere, must be clear |
325 | # when an attribute is added. See Mouse::Meta::Class::add_attribute. |
abbcd124 |
326 | my $initializer = $self->{_mouse_cache}{_initialize_object} ||= |
a3a09e38 |
327 | Mouse::Util::load_class($self->constructor_class) |
328 | ->_generate_initialize_object($self); |
a3a09e38 |
329 | goto &{$initializer}; |
4e7e3250 |
330 | } |
331 | |
abbcd124 |
332 | sub get_all_attributes { |
333 | my($self) = @_; |
334 | return @{ $self->{_mouse_cache}{all_attributes} |
335 | ||= $self->_calculate_all_attributes }; |
336 | } |
337 | |
80efe911 |
338 | sub is_immutable { $_[0]->{is_immutable} } |
4e7e3250 |
339 | |
823419c5 |
340 | sub strict_constructor; |
341 | *strict_constructor = $generate_class_accessor->('strict_constructor'); |
fb4ddd88 |
342 | |
343 | sub _report_unknown_args { |
344 | my($metaclass, $attrs, $args) = @_; |
345 | |
346 | my @unknowns; |
347 | my %init_args; |
348 | foreach my $attr(@{$attrs}){ |
349 | my $init_arg = $attr->init_arg; |
350 | if(defined $init_arg){ |
351 | $init_args{$init_arg}++; |
352 | } |
353 | } |
354 | |
355 | while(my $key = each %{$args}){ |
356 | if(!exists $init_args{$key}){ |
357 | push @unknowns, $key; |
358 | } |
359 | } |
360 | |
361 | $metaclass->throw_error( sprintf |
362 | "Unknown attribute passed to the constructor of %s: %s", |
363 | $metaclass->name, Mouse::Util::english_list(@unknowns), |
364 | ); |
365 | } |
e128626c |
366 | |
6fffa617 |
367 | package Mouse::Meta::Role; |
43165725 |
368 | |
e058b279 |
369 | sub method_metaclass{ $_[0]->{method_metaclass} || 'Mouse::Meta::Role::Method' } |
370 | |
43165725 |
371 | sub is_anon_role{ |
372 | return exists $_[0]->{anon_serial_id}; |
373 | } |
374 | |
375 | sub get_roles { $_[0]->{roles} } |
376 | |
cb60d0b5 |
377 | sub add_before_method_modifier { |
378 | my ($self, $method_name, $method) = @_; |
379 | |
380 | push @{ $self->{before_method_modifiers}{$method_name} ||= [] }, $method; |
381 | return; |
382 | } |
383 | sub add_around_method_modifier { |
384 | my ($self, $method_name, $method) = @_; |
385 | |
386 | push @{ $self->{around_method_modifiers}{$method_name} ||= [] }, $method; |
387 | return; |
388 | } |
389 | sub add_after_method_modifier { |
390 | my ($self, $method_name, $method) = @_; |
391 | |
392 | push @{ $self->{after_method_modifiers}{$method_name} ||= [] }, $method; |
393 | return; |
394 | } |
395 | |
396 | sub get_before_method_modifiers { |
397 | my ($self, $method_name) = @_; |
398 | return @{ $self->{before_method_modifiers}{$method_name} ||= [] } |
399 | } |
400 | sub get_around_method_modifiers { |
401 | my ($self, $method_name) = @_; |
402 | return @{ $self->{around_method_modifiers}{$method_name} ||= [] } |
403 | } |
404 | sub get_after_method_modifiers { |
405 | my ($self, $method_name) = @_; |
406 | return @{ $self->{after_method_modifiers}{$method_name} ||= [] } |
407 | } |
408 | |
b4dc9315 |
409 | sub add_metaclass_accessor { # for meta roles (a.k.a. traits) |
410 | my($meta, $name) = @_; |
411 | $meta->add_method($name => $generate_class_accessor->($name)); |
412 | return; |
413 | } |
414 | |
6fffa617 |
415 | package Mouse::Meta::Attribute; |
43165725 |
416 | |
e058b279 |
417 | require Mouse::Meta::Method::Accessor; |
418 | |
419 | sub accessor_metaclass{ $_[0]->{accessor_metaclass} || 'Mouse::Meta::Method::Accessor' } |
43165725 |
420 | |
421 | # readers |
422 | |
423 | sub name { $_[0]->{name} } |
424 | sub associated_class { $_[0]->{associated_class} } |
425 | |
426 | sub accessor { $_[0]->{accessor} } |
427 | sub reader { $_[0]->{reader} } |
428 | sub writer { $_[0]->{writer} } |
429 | sub predicate { $_[0]->{predicate} } |
430 | sub clearer { $_[0]->{clearer} } |
431 | sub handles { $_[0]->{handles} } |
432 | |
433 | sub _is_metadata { $_[0]->{is} } |
434 | sub is_required { $_[0]->{required} } |
435 | sub default { $_[0]->{default} } |
436 | sub is_lazy { $_[0]->{lazy} } |
437 | sub is_lazy_build { $_[0]->{lazy_build} } |
438 | sub is_weak_ref { $_[0]->{weak_ref} } |
439 | sub init_arg { $_[0]->{init_arg} } |
440 | sub type_constraint { $_[0]->{type_constraint} } |
441 | |
442 | sub trigger { $_[0]->{trigger} } |
443 | sub builder { $_[0]->{builder} } |
444 | sub should_auto_deref { $_[0]->{auto_deref} } |
445 | sub should_coerce { $_[0]->{coerce} } |
446 | |
d899d3e7 |
447 | sub documentation { $_[0]->{documentation} } |
beb51b30 |
448 | sub insertion_order { $_[0]->{insertion_order} } |
d899d3e7 |
449 | |
43165725 |
450 | # predicates |
451 | |
452 | sub has_accessor { exists $_[0]->{accessor} } |
453 | sub has_reader { exists $_[0]->{reader} } |
454 | sub has_writer { exists $_[0]->{writer} } |
455 | sub has_predicate { exists $_[0]->{predicate} } |
456 | sub has_clearer { exists $_[0]->{clearer} } |
457 | sub has_handles { exists $_[0]->{handles} } |
458 | |
459 | sub has_default { exists $_[0]->{default} } |
460 | sub has_type_constraint { exists $_[0]->{type_constraint} } |
461 | sub has_trigger { exists $_[0]->{trigger} } |
462 | sub has_builder { exists $_[0]->{builder} } |
463 | |
d899d3e7 |
464 | sub has_documentation { exists $_[0]->{documentation} } |
465 | |
ba1f50a2 |
466 | sub _process_options{ |
467 | my($class, $name, $args) = @_; |
468 | |
469 | # taken from Class::MOP::Attribute::new |
470 | |
471 | defined($name) |
472 | or $class->throw_error('You must provide a name for the attribute'); |
473 | |
474 | if(!exists $args->{init_arg}){ |
475 | $args->{init_arg} = $name; |
476 | } |
477 | |
478 | # 'required' requires eigher 'init_arg', 'builder', or 'default' |
479 | my $can_be_required = defined( $args->{init_arg} ); |
480 | |
481 | if(exists $args->{builder}){ |
482 | # XXX: |
483 | # Moose refuses a CODE ref builder, but Mouse doesn't for backward compatibility |
484 | # This feature will be changed in a future. (gfx) |
485 | $class->throw_error('builder must be a defined scalar value which is a method name') |
486 | #if ref $args->{builder} || !defined $args->{builder}; |
487 | if !defined $args->{builder}; |
488 | |
489 | $can_be_required++; |
490 | } |
491 | elsif(exists $args->{default}){ |
492 | if(ref $args->{default} && ref($args->{default}) ne 'CODE'){ |
493 | $class->throw_error("References are not allowed as default values, you must " |
494 | . "wrap the default of '$name' in a CODE reference (ex: sub { [] } and not [])"); |
495 | } |
496 | $can_be_required++; |
497 | } |
498 | |
499 | if( $args->{required} && !$can_be_required ) { |
500 | $class->throw_error("You cannot have a required attribute ($name) without a default, builder, or an init_arg"); |
501 | } |
502 | |
503 | # taken from Mouse::Meta::Attribute->new and ->_process_args |
504 | |
505 | if(exists $args->{is}){ |
506 | my $is = $args->{is}; |
507 | |
508 | if($is eq 'ro'){ |
509 | $args->{reader} ||= $name; |
510 | } |
511 | elsif($is eq 'rw'){ |
512 | if(exists $args->{writer}){ |
513 | $args->{reader} ||= $name; |
514 | } |
515 | else{ |
516 | $args->{accessor} ||= $name; |
517 | } |
518 | } |
519 | elsif($is eq 'bare'){ |
520 | # do nothing, but don't complain (later) about missing methods |
521 | } |
522 | else{ |
523 | $is = 'undef' if !defined $is; |
524 | $class->throw_error("I do not understand this option (is => $is) on attribute ($name)"); |
525 | } |
526 | } |
527 | |
528 | my $tc; |
529 | if(exists $args->{isa}){ |
d503a4f3 |
530 | $tc = $args->{type_constraint} = Mouse::Util::TypeConstraints::find_or_create_isa_type_constraint($args->{isa}); |
ba1f50a2 |
531 | } |
d503a4f3 |
532 | |
533 | if(exists $args->{does}){ |
534 | if(defined $tc){ # both isa and does supplied |
535 | my $does_ok = do{ |
536 | local $@; |
537 | eval{ "$tc"->does($args) }; |
538 | }; |
539 | if(!$does_ok){ |
540 | $class->throw_error("Cannot have both an isa option and a does option because '$tc' does not do '$args->{does}' on attribute ($name)"); |
541 | } |
542 | } |
543 | else { |
544 | $tc = $args->{type_constraint} = Mouse::Util::TypeConstraints::find_or_create_does_type_constraint($args->{does}); |
545 | } |
ba1f50a2 |
546 | } |
ba1f50a2 |
547 | |
548 | if($args->{coerce}){ |
549 | defined($tc) |
550 | || $class->throw_error("You cannot have coercion without specifying a type constraint on attribute ($name)"); |
551 | |
552 | $args->{weak_ref} |
553 | && $class->throw_error("You cannot have a weak reference to a coerced value on attribute ($name)"); |
554 | } |
555 | |
556 | if ($args->{lazy_build}) { |
557 | exists($args->{default}) |
558 | && $class->throw_error("You can not use lazy_build and default for the same attribute ($name)"); |
559 | |
560 | $args->{lazy} = 1; |
561 | $args->{builder} ||= "_build_${name}"; |
562 | if ($name =~ /^_/) { |
563 | $args->{clearer} ||= "_clear${name}"; |
564 | $args->{predicate} ||= "_has${name}"; |
565 | } |
566 | else { |
567 | $args->{clearer} ||= "clear_${name}"; |
568 | $args->{predicate} ||= "has_${name}"; |
569 | } |
570 | } |
571 | |
572 | if ($args->{auto_deref}) { |
573 | defined($tc) |
574 | || $class->throw_error("You cannot auto-dereference without specifying a type constraint on attribute ($name)"); |
575 | |
576 | ( $tc->is_a_type_of('ArrayRef') || $tc->is_a_type_of('HashRef') ) |
577 | || $class->throw_error("You cannot auto-dereference anything other than a ArrayRef or HashRef on attribute ($name)"); |
578 | } |
579 | |
580 | if (exists $args->{trigger}) { |
581 | ('CODE' eq ref $args->{trigger}) |
582 | || $class->throw_error("Trigger must be a CODE ref on attribute ($name)"); |
583 | } |
584 | |
585 | if ($args->{lazy}) { |
586 | (exists $args->{default} || defined $args->{builder}) |
587 | || $class->throw_error("You cannot have lazy attribute ($name) without specifying a default value for it"); |
588 | } |
589 | |
590 | return; |
591 | } |
592 | |
593 | |
6fffa617 |
594 | package Mouse::Meta::TypeConstraint; |
43165725 |
595 | |
6e647cac |
596 | use overload |
597 | '""' => '_as_string', |
b4dc9315 |
598 | '0+' => '_identity', |
6e647cac |
599 | '|' => '_unite', |
600 | |
601 | fallback => 1; |
602 | |
43165725 |
603 | sub name { $_[0]->{name} } |
604 | sub parent { $_[0]->{parent} } |
605 | sub message { $_[0]->{message} } |
606 | |
f6c81f00 |
607 | sub _identity { Scalar::Util::refaddr($_[0]) } # overload 0+ |
608 | |
72dc2c9d |
609 | sub type_parameter { $_[0]->{type_parameter} } |
43165725 |
610 | sub _compiled_type_constraint{ $_[0]->{compiled_type_constraint} } |
93540011 |
611 | sub _compiled_type_coercion { $_[0]->{_compiled_type_coercion} } |
df6dd016 |
612 | |
72dc2c9d |
613 | sub __is_parameterized { exists $_[0]->{type_parameter} } |
614 | sub has_coercion { exists $_[0]->{_compiled_type_coercion} } |
df6dd016 |
615 | |
f790c46b |
616 | |
617 | sub compile_type_constraint{ |
618 | my($self) = @_; |
619 | |
620 | # add parents first |
621 | my @checks; |
622 | for(my $parent = $self->{parent}; defined $parent; $parent = $parent->{parent}){ |
623 | if($parent->{hand_optimized_type_constraint}){ |
624 | unshift @checks, $parent->{hand_optimized_type_constraint}; |
625 | last; # a hand optimized constraint must include all the parents |
626 | } |
627 | elsif($parent->{constraint}){ |
628 | unshift @checks, $parent->{constraint}; |
629 | } |
630 | } |
631 | |
632 | # then add child |
633 | if($self->{constraint}){ |
634 | push @checks, $self->{constraint}; |
635 | } |
636 | |
637 | if($self->{type_constraints}){ # Union |
638 | my @types = map{ $_->{compiled_type_constraint} } @{ $self->{type_constraints} }; |
639 | push @checks, sub{ |
640 | foreach my $c(@types){ |
641 | return 1 if $c->($_[0]); |
642 | } |
643 | return 0; |
644 | }; |
645 | } |
646 | |
647 | if(@checks == 0){ |
648 | $self->{compiled_type_constraint} = \&Mouse::Util::TypeConstraints::Any; |
649 | } |
650 | else{ |
651 | $self->{compiled_type_constraint} = sub{ |
652 | my(@args) = @_; |
653 | local $_ = $args[0]; |
654 | foreach my $c(@checks){ |
655 | return undef if !$c->(@args); |
656 | } |
657 | return 1; |
658 | }; |
659 | } |
660 | return; |
661 | } |
662 | |
c7576321 |
663 | sub check { |
664 | my $self = shift; |
665 | return $self->_compiled_type_constraint->(@_); |
666 | } |
667 | |
668 | |
6fffa617 |
669 | package Mouse::Object; |
aa2d2e2c |
670 | |
aa2d2e2c |
671 | sub BUILDARGS { |
672 | my $class = shift; |
f790c46b |
673 | |
aa2d2e2c |
674 | if (scalar @_ == 1) { |
675 | (ref($_[0]) eq 'HASH') |
676 | || $class->meta->throw_error("Single parameters to new() must be a HASH ref"); |
677 | |
678 | return {%{$_[0]}}; |
679 | } |
680 | else { |
681 | return {@_}; |
682 | } |
683 | } |
f790c46b |
684 | |
af04626d |
685 | sub new { |
686 | my $class = shift; |
c83feefa |
687 | my $args = $class->BUILDARGS(@_); |
688 | return $class->meta->new_object($args); |
af04626d |
689 | } |
690 | |
a5c683f6 |
691 | sub DESTROY { |
692 | my $self = shift; |
693 | |
694 | return unless $self->can('DEMOLISH'); # short circuit |
695 | |
a5c683f6 |
696 | my $e = do{ |
a3a09e38 |
697 | local $?; |
a5c683f6 |
698 | local $@; |
699 | eval{ |
a5c683f6 |
700 | # DEMOLISHALL |
701 | |
702 | # We cannot count on being able to retrieve a previously made |
703 | # metaclass, _or_ being able to make a new one during global |
704 | # destruction. However, we should still be able to use mro at |
705 | # that time (at least tests suggest so ;) |
706 | |
707 | foreach my $class (@{ Mouse::Util::get_linear_isa(ref $self) }) { |
708 | my $demolish = Mouse::Util::get_code_ref($class, 'DEMOLISH') |
709 | || next; |
710 | |
6514735e |
711 | $self->$demolish($Mouse::Util::in_global_destruction); |
a5c683f6 |
712 | } |
713 | }; |
714 | $@; |
715 | }; |
716 | |
717 | no warnings 'misc'; |
718 | die $e if $e; # rethrow |
719 | } |
720 | |
adb5eb76 |
721 | sub BUILDALL { |
722 | my $self = shift; |
723 | |
724 | # short circuit |
725 | return unless $self->can('BUILD'); |
726 | |
727 | for my $class (reverse $self->meta->linearized_isa) { |
728 | my $build = Mouse::Util::get_code_ref($class, 'BUILD') |
729 | || next; |
730 | |
731 | $self->$build(@_); |
732 | } |
733 | return; |
734 | } |
735 | |
736 | sub DEMOLISHALL; |
737 | *DEMOLISHALL = \&DESTROY; |
738 | |
df6dd016 |
739 | 1; |
740 | __END__ |
ccb38d0b |
741 | |
742 | =head1 NAME |
743 | |
744 | Mouse::PurePerl - A Mouse guts in pure Perl |
745 | |
746 | =head1 VERSION |
747 | |
32ec255c |
748 | This document describes Mouse version 0.75 |
ccb38d0b |
749 | |
750 | =head1 SEE ALSO |
751 | |
752 | L<Mouse::XS> |
753 | |
754 | =cut |