Commit | Line | Data |
ccb38d0b |
1 | package Mouse::PurePerl; |
2 | |
a52cca04 |
3 | require Mouse::Util; |
4 | |
df6dd016 |
5 | package |
6 | Mouse::Util; |
7 | |
8 | use strict; |
9 | use warnings; |
10 | |
11 | use warnings FATAL => 'redefine'; # to avoid to load Mouse::PurePerl |
12 | |
13 | use B (); |
14 | |
15 | sub is_class_loaded { |
16 | my $class = shift; |
17 | |
18 | return 0 if ref($class) || !defined($class) || !length($class); |
19 | |
20 | # walk the symbol table tree to avoid autovififying |
21 | # \*{${main::}{"Foo::"}} == \*main::Foo:: |
22 | |
23 | my $pack = \%::; |
24 | foreach my $part (split('::', $class)) { |
25 | my $entry = \$pack->{$part . '::'}; |
26 | return 0 if ref($entry) ne 'GLOB'; |
27 | $pack = *{$entry}{HASH} or return 0; |
28 | } |
29 | |
30 | # check for $VERSION or @ISA |
31 | return 1 if exists $pack->{VERSION} |
32 | && defined *{$pack->{VERSION}}{SCALAR} && defined ${ $pack->{VERSION} }; |
33 | return 1 if exists $pack->{ISA} |
34 | && defined *{$pack->{ISA}}{ARRAY} && @{ $pack->{ISA} } != 0; |
35 | |
36 | # check for any method |
37 | foreach my $name( keys %{$pack} ) { |
38 | my $entry = \$pack->{$name}; |
39 | return 1 if ref($entry) ne 'GLOB' || defined *{$entry}{CODE}; |
40 | } |
41 | |
42 | # fail |
43 | return 0; |
44 | } |
45 | |
46 | |
47 | # taken from Sub::Identify |
48 | sub get_code_info { |
49 | my ($coderef) = @_; |
50 | ref($coderef) or return; |
51 | |
52 | my $cv = B::svref_2object($coderef); |
53 | $cv->isa('B::CV') or return; |
54 | |
55 | my $gv = $cv->GV; |
56 | $gv->isa('B::GV') or return; |
57 | |
58 | return ($gv->STASH->NAME, $gv->NAME); |
59 | } |
60 | |
61 | sub get_code_package{ |
62 | my($coderef) = @_; |
63 | |
64 | my $cv = B::svref_2object($coderef); |
65 | $cv->isa('B::CV') or return ''; |
66 | |
67 | my $gv = $cv->GV; |
68 | $gv->isa('B::GV') or return ''; |
69 | |
70 | return $gv->STASH->NAME; |
71 | } |
72 | |
7d96ae4d |
73 | sub get_code_ref{ |
74 | my($package, $name) = @_; |
75 | no strict 'refs'; |
76 | no warnings 'once'; |
77 | use warnings FATAL => 'uninitialized'; |
78 | return *{$package . '::' . $name}{CODE}; |
79 | } |
80 | |
e3540312 |
81 | sub generate_isa_predicate_for { |
1d5ecd5f |
82 | my($for_class, $name) = @_; |
83 | |
f48920c1 |
84 | my $predicate = sub{ Scalar::Util::blessed($_[0]) && $_[0]->isa($for_class) }; |
1d5ecd5f |
85 | |
86 | if(defined $name){ |
87 | no strict 'refs'; |
88 | *{ caller() . '::' . $name } = $predicate; |
89 | return; |
90 | } |
91 | |
92 | return $predicate; |
93 | } |
94 | |
95 | |
f48920c1 |
96 | package |
97 | Mouse::Util::TypeConstraints; |
98 | |
99 | use Scalar::Util qw(blessed looks_like_number openhandle); |
100 | |
7d96ae4d |
101 | sub Any { 1 } |
102 | sub Item { 1 } |
7d96ae4d |
103 | |
104 | sub Bool { $_[0] ? $_[0] eq '1' : 1 } |
105 | sub Undef { !defined($_[0]) } |
106 | sub Defined { defined($_[0]) } |
107 | sub Value { defined($_[0]) && !ref($_[0]) } |
108 | sub Num { !ref($_[0]) && looks_like_number($_[0]) } |
109 | sub Int { defined($_[0]) && !ref($_[0]) && $_[0] =~ /^-?[0-9]+$/ } |
110 | sub Str { defined($_[0]) && !ref($_[0]) } |
111 | |
112 | sub Ref { ref($_[0]) } |
113 | sub ScalarRef { ref($_[0]) eq 'SCALAR' } |
114 | sub ArrayRef { ref($_[0]) eq 'ARRAY' } |
115 | sub HashRef { ref($_[0]) eq 'HASH' } |
116 | sub CodeRef { ref($_[0]) eq 'CODE' } |
117 | sub RegexpRef { ref($_[0]) eq 'Regexp' } |
118 | sub GlobRef { ref($_[0]) eq 'GLOB' } |
119 | |
120 | sub FileHandle { |
121 | openhandle($_[0]) || (blessed($_[0]) && $_[0]->isa("IO::Handle")) |
122 | } |
123 | |
124 | sub Object { blessed($_[0]) && blessed($_[0]) ne 'Regexp' } |
125 | |
126 | sub ClassName { Mouse::Util::is_class_loaded($_[0]) } |
127 | sub RoleName { (Mouse::Util::class_of($_[0]) || return 0)->isa('Mouse::Meta::Role') } |
128 | |
619338ac |
129 | sub _parameterize_ArrayRef_for { |
130 | my($type_parameter) = @_; |
131 | my $check = $type_parameter->_compiled_type_constraint; |
132 | |
133 | return sub { |
134 | foreach my $value (@{$_}) { |
135 | return undef unless $check->($value); |
136 | } |
137 | return 1; |
138 | } |
139 | } |
140 | |
141 | sub _parameterize_HashRef_for { |
142 | my($type_parameter) = @_; |
143 | my $check = $type_parameter->_compiled_type_constraint; |
144 | |
145 | return sub { |
146 | foreach my $value(values %{$_}){ |
147 | return undef unless $check->($value); |
148 | } |
149 | return 1; |
150 | }; |
151 | } |
152 | |
153 | # 'Maybe' type accepts 'Any', so it requires parameters |
154 | sub _parameterize_Maybe_for { |
155 | my($type_parameter) = @_; |
156 | my $check = $type_parameter->_compiled_type_constraint; |
157 | |
158 | return sub{ |
159 | return !defined($_) || $check->($_); |
160 | }; |
161 | }; |
162 | |
163 | |
7d96ae4d |
164 | |
43165725 |
165 | package |
166 | Mouse::Meta::Module; |
167 | |
926404f2 |
168 | sub name { $_[0]->{package} } |
169 | |
170 | sub _method_map { $_[0]->{methods} } |
c5f6ad05 |
171 | sub _attribute_map{ $_[0]->{attributes} } |
43165725 |
172 | |
2591e962 |
173 | sub namespace{ |
174 | my $name = $_[0]->{package}; |
175 | no strict 'refs'; |
176 | return \%{ $name . '::' }; |
177 | } |
178 | |
3e44140b |
179 | sub add_method { |
180 | my($self, $name, $code) = @_; |
181 | |
182 | if(!defined $name){ |
183 | $self->throw_error('You must pass a defined name'); |
184 | } |
185 | if(!defined $code){ |
186 | $self->throw_error('You must pass a defined code'); |
187 | } |
188 | |
189 | if(ref($code) ne 'CODE'){ |
190 | $code = \&{$code}; # coerce |
191 | } |
192 | |
193 | $self->{methods}->{$name} = $code; # Moose stores meta object here. |
194 | |
195 | my $pkg = $self->name; |
196 | no strict 'refs'; |
197 | no warnings 'redefine', 'once'; |
198 | *{ $pkg . '::' . $name } = $code; |
199 | return; |
200 | } |
201 | |
f18345f1 |
202 | my %SIGIL_MAP = ( |
203 | '$' => 'SCALAR', |
204 | '@' => 'ARRAY', |
205 | '%' => 'HASH', |
206 | '&' => 'CODE', |
207 | '*' => 'GLOB', |
208 | ); |
209 | |
210 | sub _deconstruct_variable_name { |
211 | my($self, $variable) = @_; |
212 | |
213 | (defined $variable) |
214 | || $self->throw_error("You must pass a variable name"); |
215 | |
216 | my $sigil = substr($variable, 0, 1, ''); |
217 | |
218 | (defined $sigil) |
219 | || $self->throw_error("The variable name must include a sigil"); |
220 | |
221 | (exists $SIGIL_MAP{$sigil}) |
222 | || $self->throw_error("I do not recognize that sigil '$sigil'"); |
223 | |
224 | return ($variable, $SIGIL_MAP{$sigil}); |
225 | } |
226 | |
227 | sub has_package_symbol { |
228 | my($self, $variable) = @_; |
229 | |
230 | my($name, $type) = $self->_deconstruct_variable_name($variable); |
231 | |
232 | my $namespace = $self->namespace; |
233 | |
234 | return 0 unless exists $namespace->{$name}; |
235 | |
236 | my $entry_ref = \$namespace->{$name}; |
237 | if ( ref($entry_ref) eq 'GLOB' ) { |
238 | return defined( *{$entry_ref}{$type} ); |
239 | } |
240 | else { |
241 | # a symbol table entry can be -1 (stub), string (stub with prototype), |
242 | # or reference (constant) |
243 | return $type eq 'CODE'; |
244 | } |
245 | } |
246 | |
247 | sub get_package_symbol { |
248 | my ($self, $variable) = @_; |
249 | |
250 | my($name, $type) = $self->_deconstruct_variable_name($variable); |
251 | |
252 | my $namespace = $self->namespace; |
253 | |
254 | return undef |
255 | unless exists $namespace->{$name}; |
256 | |
257 | my $entry_ref = \$namespace->{$name}; |
258 | |
259 | if ( ref($entry_ref) eq 'GLOB' ) { |
260 | return *{$entry_ref}{$type}; |
261 | } |
262 | else { |
263 | if ( $type eq 'CODE' ) { |
264 | no strict 'refs'; |
265 | return \&{ $self->name . '::' . $name }; |
266 | } |
267 | else { |
268 | return undef; |
269 | } |
270 | } |
271 | } |
272 | |
3e44140b |
273 | |
43165725 |
274 | package |
275 | Mouse::Meta::Class; |
276 | |
e058b279 |
277 | sub method_metaclass { $_[0]->{method_metaclass} || 'Mouse::Meta::Method' } |
278 | sub attribute_metaclass { $_[0]->{attribute_metaclass} || 'Mouse::Meta::Attribute' } |
279 | |
280 | sub constructor_class { $_[0]->{constructor_class} || 'Mouse::Meta::Method::Constructor' } |
281 | sub destructor_class { $_[0]->{destructor_class} || 'Mouse::Meta::Method::Destructor' } |
4e7e3250 |
282 | |
43165725 |
283 | sub is_anon_class{ |
284 | return exists $_[0]->{anon_serial_id}; |
285 | } |
286 | |
287 | sub roles { $_[0]->{roles} } |
288 | |
cccb83de |
289 | sub linearized_isa { @{ get_linear_isa($_[0]->{package}) } } |
290 | |
da4432f3 |
291 | sub get_all_attributes { |
292 | my($self) = @_; |
047d7af0 |
293 | my %attrs = map { %{ $self->initialize($_)->{attributes} } } reverse $self->linearized_isa; |
da4432f3 |
294 | return values %attrs; |
295 | } |
296 | |
ba153b33 |
297 | sub new_object { |
298 | my $self = shift; |
299 | my %args = (@_ == 1 ? %{$_[0]} : @_); |
300 | |
301 | my $object = bless {}, $self->name; |
302 | |
303 | $self->_initialize_object($object, \%args); |
304 | return $object; |
305 | } |
306 | |
4e7e3250 |
307 | sub _initialize_object{ |
308 | my($self, $object, $args, $ignore_triggers) = @_; |
309 | |
310 | my @triggers_queue; |
311 | |
312 | foreach my $attribute ($self->get_all_attributes) { |
313 | my $init_arg = $attribute->init_arg; |
314 | my $slot = $attribute->name; |
315 | |
316 | if (defined($init_arg) && exists($args->{$init_arg})) { |
317 | $object->{$slot} = $attribute->_coerce_and_verify($args->{$init_arg}, $object); |
318 | |
319 | weaken($object->{$slot}) |
320 | if ref($object->{$slot}) && $attribute->is_weak_ref; |
321 | |
322 | if ($attribute->has_trigger) { |
323 | push @triggers_queue, [ $attribute->trigger, $object->{$slot} ]; |
324 | } |
325 | } |
326 | else { # no init arg |
327 | if ($attribute->has_default || $attribute->has_builder) { |
328 | if (!$attribute->is_lazy) { |
329 | my $default = $attribute->default; |
330 | my $builder = $attribute->builder; |
331 | my $value = $builder ? $object->$builder() |
332 | : ref($default) eq 'CODE' ? $object->$default() |
333 | : $default; |
334 | |
335 | $object->{$slot} = $attribute->_coerce_and_verify($value, $object); |
336 | |
337 | weaken($object->{$slot}) |
338 | if ref($object->{$slot}) && $attribute->is_weak_ref; |
339 | } |
340 | } |
341 | elsif($attribute->is_required) { |
342 | $self->throw_error("Attribute (".$attribute->name.") is required"); |
343 | } |
344 | } |
345 | } |
346 | |
347 | if(!$ignore_triggers){ |
348 | foreach my $trigger_and_value(@triggers_queue){ |
349 | my($trigger, $value) = @{$trigger_and_value}; |
350 | $trigger->($object, $value); |
351 | } |
352 | } |
353 | |
354 | if($self->is_anon_class){ |
355 | $object->{__METACLASS__} = $self; |
356 | } |
357 | |
358 | return; |
359 | } |
360 | |
361 | |
43165725 |
362 | package |
363 | Mouse::Meta::Role; |
364 | |
e058b279 |
365 | sub method_metaclass{ $_[0]->{method_metaclass} || 'Mouse::Meta::Role::Method' } |
366 | |
43165725 |
367 | sub is_anon_role{ |
368 | return exists $_[0]->{anon_serial_id}; |
369 | } |
370 | |
371 | sub get_roles { $_[0]->{roles} } |
372 | |
373 | package |
374 | Mouse::Meta::Attribute; |
375 | |
e058b279 |
376 | require Mouse::Meta::Method::Accessor; |
377 | |
378 | sub accessor_metaclass{ $_[0]->{accessor_metaclass} || 'Mouse::Meta::Method::Accessor' } |
43165725 |
379 | |
380 | # readers |
381 | |
382 | sub name { $_[0]->{name} } |
383 | sub associated_class { $_[0]->{associated_class} } |
384 | |
385 | sub accessor { $_[0]->{accessor} } |
386 | sub reader { $_[0]->{reader} } |
387 | sub writer { $_[0]->{writer} } |
388 | sub predicate { $_[0]->{predicate} } |
389 | sub clearer { $_[0]->{clearer} } |
390 | sub handles { $_[0]->{handles} } |
391 | |
392 | sub _is_metadata { $_[0]->{is} } |
393 | sub is_required { $_[0]->{required} } |
394 | sub default { $_[0]->{default} } |
395 | sub is_lazy { $_[0]->{lazy} } |
396 | sub is_lazy_build { $_[0]->{lazy_build} } |
397 | sub is_weak_ref { $_[0]->{weak_ref} } |
398 | sub init_arg { $_[0]->{init_arg} } |
399 | sub type_constraint { $_[0]->{type_constraint} } |
400 | |
401 | sub trigger { $_[0]->{trigger} } |
402 | sub builder { $_[0]->{builder} } |
403 | sub should_auto_deref { $_[0]->{auto_deref} } |
404 | sub should_coerce { $_[0]->{coerce} } |
405 | |
d899d3e7 |
406 | sub documentation { $_[0]->{documentation} } |
407 | |
43165725 |
408 | # predicates |
409 | |
410 | sub has_accessor { exists $_[0]->{accessor} } |
411 | sub has_reader { exists $_[0]->{reader} } |
412 | sub has_writer { exists $_[0]->{writer} } |
413 | sub has_predicate { exists $_[0]->{predicate} } |
414 | sub has_clearer { exists $_[0]->{clearer} } |
415 | sub has_handles { exists $_[0]->{handles} } |
416 | |
417 | sub has_default { exists $_[0]->{default} } |
418 | sub has_type_constraint { exists $_[0]->{type_constraint} } |
419 | sub has_trigger { exists $_[0]->{trigger} } |
420 | sub has_builder { exists $_[0]->{builder} } |
421 | |
d899d3e7 |
422 | sub has_documentation { exists $_[0]->{documentation} } |
423 | |
43165725 |
424 | package |
425 | Mouse::Meta::TypeConstraint; |
426 | |
427 | sub name { $_[0]->{name} } |
428 | sub parent { $_[0]->{parent} } |
429 | sub message { $_[0]->{message} } |
430 | |
431 | sub _compiled_type_constraint{ $_[0]->{compiled_type_constraint} } |
432 | |
93540011 |
433 | sub _compiled_type_coercion { $_[0]->{_compiled_type_coercion} } |
df6dd016 |
434 | |
93540011 |
435 | sub has_coercion{ exists $_[0]->{_compiled_type_coercion} } |
df6dd016 |
436 | |
f790c46b |
437 | |
438 | sub compile_type_constraint{ |
439 | my($self) = @_; |
440 | |
441 | # add parents first |
442 | my @checks; |
443 | for(my $parent = $self->{parent}; defined $parent; $parent = $parent->{parent}){ |
444 | if($parent->{hand_optimized_type_constraint}){ |
445 | unshift @checks, $parent->{hand_optimized_type_constraint}; |
446 | last; # a hand optimized constraint must include all the parents |
447 | } |
448 | elsif($parent->{constraint}){ |
449 | unshift @checks, $parent->{constraint}; |
450 | } |
451 | } |
452 | |
453 | # then add child |
454 | if($self->{constraint}){ |
455 | push @checks, $self->{constraint}; |
456 | } |
457 | |
458 | if($self->{type_constraints}){ # Union |
459 | my @types = map{ $_->{compiled_type_constraint} } @{ $self->{type_constraints} }; |
460 | push @checks, sub{ |
461 | foreach my $c(@types){ |
462 | return 1 if $c->($_[0]); |
463 | } |
464 | return 0; |
465 | }; |
466 | } |
467 | |
468 | if(@checks == 0){ |
469 | $self->{compiled_type_constraint} = \&Mouse::Util::TypeConstraints::Any; |
470 | } |
471 | else{ |
472 | $self->{compiled_type_constraint} = sub{ |
473 | my(@args) = @_; |
474 | local $_ = $args[0]; |
475 | foreach my $c(@checks){ |
476 | return undef if !$c->(@args); |
477 | } |
478 | return 1; |
479 | }; |
480 | } |
481 | return; |
482 | } |
483 | |
aa2d2e2c |
484 | package |
485 | Mouse::Object; |
486 | |
487 | |
488 | sub BUILDARGS { |
489 | my $class = shift; |
f790c46b |
490 | |
aa2d2e2c |
491 | if (scalar @_ == 1) { |
492 | (ref($_[0]) eq 'HASH') |
493 | || $class->meta->throw_error("Single parameters to new() must be a HASH ref"); |
494 | |
495 | return {%{$_[0]}}; |
496 | } |
497 | else { |
498 | return {@_}; |
499 | } |
500 | } |
f790c46b |
501 | |
af04626d |
502 | sub new { |
503 | my $class = shift; |
504 | |
505 | $class->meta->throw_error('Cannot call new() on an instance') if ref $class; |
506 | |
507 | my $args = $class->BUILDARGS(@_); |
508 | |
509 | my $meta = Mouse::Meta::Class->initialize($class); |
510 | my $self = $meta->new_object($args); |
511 | |
512 | # BUILDALL |
513 | if( $self->can('BUILD') ) { |
514 | for my $class (reverse $meta->linearized_isa) { |
515 | my $build = Mouse::Util::get_code_ref($class, 'BUILD') |
516 | || next; |
517 | |
518 | $self->$build($args); |
519 | } |
520 | } |
521 | |
522 | return $self; |
523 | } |
524 | |
a5c683f6 |
525 | sub DESTROY { |
526 | my $self = shift; |
527 | |
528 | return unless $self->can('DEMOLISH'); # short circuit |
529 | |
530 | local $?; |
531 | |
532 | my $e = do{ |
533 | local $@; |
534 | eval{ |
535 | |
536 | # DEMOLISHALL |
537 | |
538 | # We cannot count on being able to retrieve a previously made |
539 | # metaclass, _or_ being able to make a new one during global |
540 | # destruction. However, we should still be able to use mro at |
541 | # that time (at least tests suggest so ;) |
542 | |
543 | foreach my $class (@{ Mouse::Util::get_linear_isa(ref $self) }) { |
544 | my $demolish = Mouse::Util::get_code_ref($class, 'DEMOLISH') |
545 | || next; |
546 | |
547 | $self->$demolish(); |
548 | } |
549 | }; |
550 | $@; |
551 | }; |
552 | |
553 | no warnings 'misc'; |
554 | die $e if $e; # rethrow |
555 | } |
556 | |
df6dd016 |
557 | 1; |
558 | __END__ |
ccb38d0b |
559 | |
560 | =head1 NAME |
561 | |
562 | Mouse::PurePerl - A Mouse guts in pure Perl |
563 | |
564 | =head1 VERSION |
565 | |
f7e41eda |
566 | This document describes Mouse version 0.40_08 |
ccb38d0b |
567 | |
568 | =head1 SEE ALSO |
569 | |
570 | L<Mouse::XS> |
571 | |
572 | =cut |