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 |
3bb9e54e |
21 | # \*{${main::}{"Foo::"}{"Bar::"}} == \*main::Foo::Bar:: |
df6dd016 |
22 | |
23 | my $pack = \%::; |
24 | foreach my $part (split('::', $class)) { |
3bb9e54e |
25 | $part .= '::'; |
26 | return 0 if !exists $pack->{$part}; |
27 | |
28 | my $entry = \$pack->{$part}; |
df6dd016 |
29 | return 0 if ref($entry) ne 'GLOB'; |
3bb9e54e |
30 | $pack = *{$entry}{HASH}; |
df6dd016 |
31 | } |
32 | |
3bb9e54e |
33 | return 0 if !%{$pack}; |
34 | |
df6dd016 |
35 | # check for $VERSION or @ISA |
36 | return 1 if exists $pack->{VERSION} |
37 | && defined *{$pack->{VERSION}}{SCALAR} && defined ${ $pack->{VERSION} }; |
38 | return 1 if exists $pack->{ISA} |
39 | && defined *{$pack->{ISA}}{ARRAY} && @{ $pack->{ISA} } != 0; |
40 | |
41 | # check for any method |
42 | foreach my $name( keys %{$pack} ) { |
43 | my $entry = \$pack->{$name}; |
44 | return 1 if ref($entry) ne 'GLOB' || defined *{$entry}{CODE}; |
45 | } |
46 | |
47 | # fail |
48 | return 0; |
49 | } |
50 | |
51 | |
52 | # taken from Sub::Identify |
53 | sub get_code_info { |
54 | my ($coderef) = @_; |
55 | ref($coderef) or return; |
56 | |
57 | my $cv = B::svref_2object($coderef); |
58 | $cv->isa('B::CV') or return; |
59 | |
60 | my $gv = $cv->GV; |
61 | $gv->isa('B::GV') or return; |
62 | |
63 | return ($gv->STASH->NAME, $gv->NAME); |
64 | } |
65 | |
66 | sub get_code_package{ |
67 | my($coderef) = @_; |
68 | |
69 | my $cv = B::svref_2object($coderef); |
70 | $cv->isa('B::CV') or return ''; |
71 | |
72 | my $gv = $cv->GV; |
73 | $gv->isa('B::GV') or return ''; |
74 | |
75 | return $gv->STASH->NAME; |
76 | } |
77 | |
7d96ae4d |
78 | sub get_code_ref{ |
79 | my($package, $name) = @_; |
80 | no strict 'refs'; |
81 | no warnings 'once'; |
82 | use warnings FATAL => 'uninitialized'; |
83 | return *{$package . '::' . $name}{CODE}; |
84 | } |
85 | |
e3540312 |
86 | sub generate_isa_predicate_for { |
1d5ecd5f |
87 | my($for_class, $name) = @_; |
88 | |
f48920c1 |
89 | my $predicate = sub{ Scalar::Util::blessed($_[0]) && $_[0]->isa($for_class) }; |
1d5ecd5f |
90 | |
91 | if(defined $name){ |
92 | no strict 'refs'; |
93 | *{ caller() . '::' . $name } = $predicate; |
94 | return; |
95 | } |
96 | |
97 | return $predicate; |
98 | } |
99 | |
100 | |
f48920c1 |
101 | package |
102 | Mouse::Util::TypeConstraints; |
103 | |
104 | use Scalar::Util qw(blessed looks_like_number openhandle); |
105 | |
7d96ae4d |
106 | sub Any { 1 } |
107 | sub Item { 1 } |
7d96ae4d |
108 | |
109 | sub Bool { $_[0] ? $_[0] eq '1' : 1 } |
110 | sub Undef { !defined($_[0]) } |
111 | sub Defined { defined($_[0]) } |
112 | sub Value { defined($_[0]) && !ref($_[0]) } |
113 | sub Num { !ref($_[0]) && looks_like_number($_[0]) } |
114 | sub Int { defined($_[0]) && !ref($_[0]) && $_[0] =~ /^-?[0-9]+$/ } |
115 | sub Str { defined($_[0]) && !ref($_[0]) } |
116 | |
117 | sub Ref { ref($_[0]) } |
118 | sub ScalarRef { ref($_[0]) eq 'SCALAR' } |
119 | sub ArrayRef { ref($_[0]) eq 'ARRAY' } |
120 | sub HashRef { ref($_[0]) eq 'HASH' } |
121 | sub CodeRef { ref($_[0]) eq 'CODE' } |
122 | sub RegexpRef { ref($_[0]) eq 'Regexp' } |
123 | sub GlobRef { ref($_[0]) eq 'GLOB' } |
124 | |
125 | sub FileHandle { |
126 | openhandle($_[0]) || (blessed($_[0]) && $_[0]->isa("IO::Handle")) |
127 | } |
128 | |
129 | sub Object { blessed($_[0]) && blessed($_[0]) ne 'Regexp' } |
130 | |
131 | sub ClassName { Mouse::Util::is_class_loaded($_[0]) } |
132 | sub RoleName { (Mouse::Util::class_of($_[0]) || return 0)->isa('Mouse::Meta::Role') } |
133 | |
619338ac |
134 | sub _parameterize_ArrayRef_for { |
135 | my($type_parameter) = @_; |
136 | my $check = $type_parameter->_compiled_type_constraint; |
137 | |
138 | return sub { |
139 | foreach my $value (@{$_}) { |
140 | return undef unless $check->($value); |
141 | } |
142 | return 1; |
143 | } |
144 | } |
145 | |
146 | sub _parameterize_HashRef_for { |
147 | my($type_parameter) = @_; |
148 | my $check = $type_parameter->_compiled_type_constraint; |
149 | |
150 | return sub { |
151 | foreach my $value(values %{$_}){ |
152 | return undef unless $check->($value); |
153 | } |
154 | return 1; |
155 | }; |
156 | } |
157 | |
158 | # 'Maybe' type accepts 'Any', so it requires parameters |
159 | sub _parameterize_Maybe_for { |
160 | my($type_parameter) = @_; |
161 | my $check = $type_parameter->_compiled_type_constraint; |
162 | |
163 | return sub{ |
164 | return !defined($_) || $check->($_); |
165 | }; |
166 | }; |
167 | |
168 | |
7d96ae4d |
169 | |
43165725 |
170 | package |
171 | Mouse::Meta::Module; |
172 | |
926404f2 |
173 | sub name { $_[0]->{package} } |
174 | |
175 | sub _method_map { $_[0]->{methods} } |
c5f6ad05 |
176 | sub _attribute_map{ $_[0]->{attributes} } |
43165725 |
177 | |
2591e962 |
178 | sub namespace{ |
179 | my $name = $_[0]->{package}; |
180 | no strict 'refs'; |
181 | return \%{ $name . '::' }; |
182 | } |
183 | |
3e44140b |
184 | sub add_method { |
185 | my($self, $name, $code) = @_; |
186 | |
187 | if(!defined $name){ |
188 | $self->throw_error('You must pass a defined name'); |
189 | } |
190 | if(!defined $code){ |
191 | $self->throw_error('You must pass a defined code'); |
192 | } |
193 | |
194 | if(ref($code) ne 'CODE'){ |
195 | $code = \&{$code}; # coerce |
196 | } |
197 | |
198 | $self->{methods}->{$name} = $code; # Moose stores meta object here. |
199 | |
200 | my $pkg = $self->name; |
201 | no strict 'refs'; |
202 | no warnings 'redefine', 'once'; |
203 | *{ $pkg . '::' . $name } = $code; |
204 | return; |
205 | } |
206 | |
43165725 |
207 | package |
208 | Mouse::Meta::Class; |
209 | |
e058b279 |
210 | sub method_metaclass { $_[0]->{method_metaclass} || 'Mouse::Meta::Method' } |
211 | sub attribute_metaclass { $_[0]->{attribute_metaclass} || 'Mouse::Meta::Attribute' } |
212 | |
213 | sub constructor_class { $_[0]->{constructor_class} || 'Mouse::Meta::Method::Constructor' } |
214 | sub destructor_class { $_[0]->{destructor_class} || 'Mouse::Meta::Method::Destructor' } |
4e7e3250 |
215 | |
43165725 |
216 | sub is_anon_class{ |
217 | return exists $_[0]->{anon_serial_id}; |
218 | } |
219 | |
220 | sub roles { $_[0]->{roles} } |
221 | |
cccb83de |
222 | sub linearized_isa { @{ get_linear_isa($_[0]->{package}) } } |
223 | |
da4432f3 |
224 | sub get_all_attributes { |
225 | my($self) = @_; |
047d7af0 |
226 | my %attrs = map { %{ $self->initialize($_)->{attributes} } } reverse $self->linearized_isa; |
da4432f3 |
227 | return values %attrs; |
228 | } |
229 | |
ba153b33 |
230 | sub new_object { |
231 | my $self = shift; |
232 | my %args = (@_ == 1 ? %{$_[0]} : @_); |
233 | |
234 | my $object = bless {}, $self->name; |
235 | |
236 | $self->_initialize_object($object, \%args); |
237 | return $object; |
238 | } |
239 | |
4e7e3250 |
240 | sub _initialize_object{ |
241 | my($self, $object, $args, $ignore_triggers) = @_; |
242 | |
243 | my @triggers_queue; |
244 | |
245 | foreach my $attribute ($self->get_all_attributes) { |
246 | my $init_arg = $attribute->init_arg; |
247 | my $slot = $attribute->name; |
248 | |
249 | if (defined($init_arg) && exists($args->{$init_arg})) { |
250 | $object->{$slot} = $attribute->_coerce_and_verify($args->{$init_arg}, $object); |
251 | |
252 | weaken($object->{$slot}) |
253 | if ref($object->{$slot}) && $attribute->is_weak_ref; |
254 | |
255 | if ($attribute->has_trigger) { |
256 | push @triggers_queue, [ $attribute->trigger, $object->{$slot} ]; |
257 | } |
258 | } |
259 | else { # no init arg |
260 | if ($attribute->has_default || $attribute->has_builder) { |
261 | if (!$attribute->is_lazy) { |
262 | my $default = $attribute->default; |
263 | my $builder = $attribute->builder; |
264 | my $value = $builder ? $object->$builder() |
265 | : ref($default) eq 'CODE' ? $object->$default() |
266 | : $default; |
267 | |
268 | $object->{$slot} = $attribute->_coerce_and_verify($value, $object); |
269 | |
270 | weaken($object->{$slot}) |
271 | if ref($object->{$slot}) && $attribute->is_weak_ref; |
272 | } |
273 | } |
274 | elsif($attribute->is_required) { |
275 | $self->throw_error("Attribute (".$attribute->name.") is required"); |
276 | } |
277 | } |
278 | } |
279 | |
280 | if(!$ignore_triggers){ |
281 | foreach my $trigger_and_value(@triggers_queue){ |
282 | my($trigger, $value) = @{$trigger_and_value}; |
283 | $trigger->($object, $value); |
284 | } |
285 | } |
286 | |
287 | if($self->is_anon_class){ |
288 | $object->{__METACLASS__} = $self; |
289 | } |
290 | |
291 | return; |
292 | } |
293 | |
294 | |
43165725 |
295 | package |
296 | Mouse::Meta::Role; |
297 | |
e058b279 |
298 | sub method_metaclass{ $_[0]->{method_metaclass} || 'Mouse::Meta::Role::Method' } |
299 | |
43165725 |
300 | sub is_anon_role{ |
301 | return exists $_[0]->{anon_serial_id}; |
302 | } |
303 | |
304 | sub get_roles { $_[0]->{roles} } |
305 | |
306 | package |
307 | Mouse::Meta::Attribute; |
308 | |
e058b279 |
309 | require Mouse::Meta::Method::Accessor; |
310 | |
311 | sub accessor_metaclass{ $_[0]->{accessor_metaclass} || 'Mouse::Meta::Method::Accessor' } |
43165725 |
312 | |
313 | # readers |
314 | |
315 | sub name { $_[0]->{name} } |
316 | sub associated_class { $_[0]->{associated_class} } |
317 | |
318 | sub accessor { $_[0]->{accessor} } |
319 | sub reader { $_[0]->{reader} } |
320 | sub writer { $_[0]->{writer} } |
321 | sub predicate { $_[0]->{predicate} } |
322 | sub clearer { $_[0]->{clearer} } |
323 | sub handles { $_[0]->{handles} } |
324 | |
325 | sub _is_metadata { $_[0]->{is} } |
326 | sub is_required { $_[0]->{required} } |
327 | sub default { $_[0]->{default} } |
328 | sub is_lazy { $_[0]->{lazy} } |
329 | sub is_lazy_build { $_[0]->{lazy_build} } |
330 | sub is_weak_ref { $_[0]->{weak_ref} } |
331 | sub init_arg { $_[0]->{init_arg} } |
332 | sub type_constraint { $_[0]->{type_constraint} } |
333 | |
334 | sub trigger { $_[0]->{trigger} } |
335 | sub builder { $_[0]->{builder} } |
336 | sub should_auto_deref { $_[0]->{auto_deref} } |
337 | sub should_coerce { $_[0]->{coerce} } |
338 | |
d899d3e7 |
339 | sub documentation { $_[0]->{documentation} } |
340 | |
43165725 |
341 | # predicates |
342 | |
343 | sub has_accessor { exists $_[0]->{accessor} } |
344 | sub has_reader { exists $_[0]->{reader} } |
345 | sub has_writer { exists $_[0]->{writer} } |
346 | sub has_predicate { exists $_[0]->{predicate} } |
347 | sub has_clearer { exists $_[0]->{clearer} } |
348 | sub has_handles { exists $_[0]->{handles} } |
349 | |
350 | sub has_default { exists $_[0]->{default} } |
351 | sub has_type_constraint { exists $_[0]->{type_constraint} } |
352 | sub has_trigger { exists $_[0]->{trigger} } |
353 | sub has_builder { exists $_[0]->{builder} } |
354 | |
d899d3e7 |
355 | sub has_documentation { exists $_[0]->{documentation} } |
356 | |
43165725 |
357 | package |
358 | Mouse::Meta::TypeConstraint; |
359 | |
360 | sub name { $_[0]->{name} } |
361 | sub parent { $_[0]->{parent} } |
362 | sub message { $_[0]->{message} } |
363 | |
364 | sub _compiled_type_constraint{ $_[0]->{compiled_type_constraint} } |
365 | |
93540011 |
366 | sub _compiled_type_coercion { $_[0]->{_compiled_type_coercion} } |
df6dd016 |
367 | |
93540011 |
368 | sub has_coercion{ exists $_[0]->{_compiled_type_coercion} } |
df6dd016 |
369 | |
f790c46b |
370 | |
371 | sub compile_type_constraint{ |
372 | my($self) = @_; |
373 | |
374 | # add parents first |
375 | my @checks; |
376 | for(my $parent = $self->{parent}; defined $parent; $parent = $parent->{parent}){ |
377 | if($parent->{hand_optimized_type_constraint}){ |
378 | unshift @checks, $parent->{hand_optimized_type_constraint}; |
379 | last; # a hand optimized constraint must include all the parents |
380 | } |
381 | elsif($parent->{constraint}){ |
382 | unshift @checks, $parent->{constraint}; |
383 | } |
384 | } |
385 | |
386 | # then add child |
387 | if($self->{constraint}){ |
388 | push @checks, $self->{constraint}; |
389 | } |
390 | |
391 | if($self->{type_constraints}){ # Union |
392 | my @types = map{ $_->{compiled_type_constraint} } @{ $self->{type_constraints} }; |
393 | push @checks, sub{ |
394 | foreach my $c(@types){ |
395 | return 1 if $c->($_[0]); |
396 | } |
397 | return 0; |
398 | }; |
399 | } |
400 | |
401 | if(@checks == 0){ |
402 | $self->{compiled_type_constraint} = \&Mouse::Util::TypeConstraints::Any; |
403 | } |
404 | else{ |
405 | $self->{compiled_type_constraint} = sub{ |
406 | my(@args) = @_; |
407 | local $_ = $args[0]; |
408 | foreach my $c(@checks){ |
409 | return undef if !$c->(@args); |
410 | } |
411 | return 1; |
412 | }; |
413 | } |
414 | return; |
415 | } |
416 | |
aa2d2e2c |
417 | package |
418 | Mouse::Object; |
419 | |
420 | |
421 | sub BUILDARGS { |
422 | my $class = shift; |
f790c46b |
423 | |
aa2d2e2c |
424 | if (scalar @_ == 1) { |
425 | (ref($_[0]) eq 'HASH') |
426 | || $class->meta->throw_error("Single parameters to new() must be a HASH ref"); |
427 | |
428 | return {%{$_[0]}}; |
429 | } |
430 | else { |
431 | return {@_}; |
432 | } |
433 | } |
f790c46b |
434 | |
af04626d |
435 | sub new { |
436 | my $class = shift; |
437 | |
438 | $class->meta->throw_error('Cannot call new() on an instance') if ref $class; |
439 | |
440 | my $args = $class->BUILDARGS(@_); |
441 | |
442 | my $meta = Mouse::Meta::Class->initialize($class); |
443 | my $self = $meta->new_object($args); |
444 | |
445 | # BUILDALL |
446 | if( $self->can('BUILD') ) { |
447 | for my $class (reverse $meta->linearized_isa) { |
448 | my $build = Mouse::Util::get_code_ref($class, 'BUILD') |
449 | || next; |
450 | |
451 | $self->$build($args); |
452 | } |
453 | } |
454 | |
455 | return $self; |
456 | } |
457 | |
a5c683f6 |
458 | sub DESTROY { |
459 | my $self = shift; |
460 | |
461 | return unless $self->can('DEMOLISH'); # short circuit |
462 | |
463 | local $?; |
464 | |
465 | my $e = do{ |
466 | local $@; |
467 | eval{ |
468 | |
469 | # DEMOLISHALL |
470 | |
471 | # We cannot count on being able to retrieve a previously made |
472 | # metaclass, _or_ being able to make a new one during global |
473 | # destruction. However, we should still be able to use mro at |
474 | # that time (at least tests suggest so ;) |
475 | |
476 | foreach my $class (@{ Mouse::Util::get_linear_isa(ref $self) }) { |
477 | my $demolish = Mouse::Util::get_code_ref($class, 'DEMOLISH') |
478 | || next; |
479 | |
480 | $self->$demolish(); |
481 | } |
482 | }; |
483 | $@; |
484 | }; |
485 | |
486 | no warnings 'misc'; |
487 | die $e if $e; # rethrow |
488 | } |
489 | |
df6dd016 |
490 | 1; |
491 | __END__ |
ccb38d0b |
492 | |
493 | =head1 NAME |
494 | |
495 | Mouse::PurePerl - A Mouse guts in pure Perl |
496 | |
497 | =head1 VERSION |
498 | |
4819ed36 |
499 | This document describes Mouse version 0.43 |
ccb38d0b |
500 | |
501 | =head1 SEE ALSO |
502 | |
503 | L<Mouse::XS> |
504 | |
505 | =cut |