Commit | Line | Data |
3b46bd49 |
1 | package Mouse::Util::TypeConstraints; |
d60c78b9 |
2 | use strict; |
3 | use warnings; |
f3bb863f |
4 | |
5 | use Exporter; |
9baf5d6b |
6 | |
f5ee065f |
7 | use Carp qw(confess); |
6c169c50 |
8 | use Scalar::Util qw/blessed looks_like_number openhandle/; |
6d28c5cf |
9 | |
2efc0af1 |
10 | use Mouse::Util qw(does_role not_supported); |
a497c7d3 |
11 | use Mouse::Meta::Module; # class_of |
684db121 |
12 | use Mouse::Meta::TypeConstraint; |
d60c78b9 |
13 | |
f5ee065f |
14 | use constant _DEBUG => !!$ENV{TC_DEBUG}; |
15 | |
f3bb863f |
16 | our @ISA = qw(Exporter); |
139d92d2 |
17 | our @EXPORT = qw( |
d44f0d03 |
18 | as where message from via type subtype coerce class_type role_type enum |
ccf44227 |
19 | find_type_constraint |
139d92d2 |
20 | ); |
21 | |
cceb0e25 |
22 | my %TYPE; |
8a7f2a8a |
23 | my %COERCE; |
24 | my %COERCE_KEYS; |
4188b837 |
25 | |
139d92d2 |
26 | sub as ($) { |
cd2b9201 |
27 | return(as => $_[0]); |
61a02a3a |
28 | } |
139d92d2 |
29 | sub where (&) { |
cd2b9201 |
30 | return(where => $_[0]) |
61a02a3a |
31 | } |
0f1dae9a |
32 | sub message (&) { |
cd2b9201 |
33 | return(message => $_[0]) |
61a02a3a |
34 | } |
35 | |
73766a27 |
36 | sub from { @_ } |
cd2b9201 |
37 | sub via (&) { $_[0] } |
61a02a3a |
38 | |
321e5271 |
39 | BEGIN { |
993e62a7 |
40 | my %builtins = ( |
f5ee065f |
41 | Any => undef, # null check |
42 | Item => undef, # null check |
43 | Maybe => undef, # null check |
73766a27 |
44 | |
45 | Bool => sub { $_[0] ? $_[0] eq '1' : 1 }, |
c91d12e0 |
46 | Undef => sub { !defined($_[0]) }, |
47 | Defined => sub { defined($_[0]) }, |
48 | Value => sub { defined($_[0]) && !ref($_[0]) }, |
49 | Num => sub { !ref($_[0]) && looks_like_number($_[0]) }, |
50 | Int => sub { defined($_[0]) && !ref($_[0]) && $_[0] =~ /^-?[0-9]+$/ }, |
51 | Str => sub { defined($_[0]) && !ref($_[0]) }, |
c91d12e0 |
52 | Ref => sub { ref($_[0]) }, |
53 | |
54 | ScalarRef => sub { ref($_[0]) eq 'SCALAR' }, |
55 | ArrayRef => sub { ref($_[0]) eq 'ARRAY' }, |
56 | HashRef => sub { ref($_[0]) eq 'HASH' }, |
57 | CodeRef => sub { ref($_[0]) eq 'CODE' }, |
58 | RegexpRef => sub { ref($_[0]) eq 'Regexp' }, |
59 | GlobRef => sub { ref($_[0]) eq 'GLOB' }, |
381f326a |
60 | |
61 | FileHandle => sub { |
c91d12e0 |
62 | ref($_[0]) eq 'GLOB' && openhandle($_[0]) |
381f326a |
63 | or |
c91d12e0 |
64 | blessed($_[0]) && $_[0]->isa("IO::Handle") |
abe4e887 |
65 | }, |
381f326a |
66 | |
c91d12e0 |
67 | Object => sub { blessed($_[0]) && blessed($_[0]) ne 'Regexp' }, |
73766a27 |
68 | |
69 | ClassName => sub { Mouse::Util::is_class_loaded($_[0]) }, |
d4571def |
70 | RoleName => sub { (Mouse::Util::find_meta($_[0]) || return 0)->isa('Mouse::Meta::Role') }, |
8a7f2a8a |
71 | ); |
993e62a7 |
72 | |
73 | while (my ($name, $code) = each %builtins) { |
73766a27 |
74 | $TYPE{$name} = Mouse::Meta::TypeConstraint->new( |
3b89ea91 |
75 | name => $name, |
76 | optimized => $code, |
73766a27 |
77 | ); |
78b13827 |
78 | } |
d3982c7e |
79 | |
f5ee065f |
80 | sub optimized_constraints { |
81 | Carp::cluck('optimized_constraints() has been deprecated'); |
82 | return \%TYPE; |
83 | } |
d4571def |
84 | |
993e62a7 |
85 | my @builtins = keys %TYPE; |
86 | sub list_all_builtin_type_constraints { @builtins } |
87 | |
88 | sub list_all_type_constraints { keys %TYPE } |
381f326a |
89 | } |
d3982c7e |
90 | |
f5ee065f |
91 | sub _create_type{ |
92 | my $mode = shift; |
93 | |
73766a27 |
94 | my $name; |
f5ee065f |
95 | my %args; |
73766a27 |
96 | |
f5ee065f |
97 | if(@_ == 1 && ref $_[0]){ # @_ : { name => $name, where => ... } |
98 | %args = %{$_[0]}; |
73766a27 |
99 | } |
f5ee065f |
100 | elsif(@_ == 2 && ref $_[1]){ # @_ : $name => { where => ... } |
73766a27 |
101 | $name = $_[0]; |
f5ee065f |
102 | %args = %{$_[1]}; |
73766a27 |
103 | } |
f5ee065f |
104 | elsif(@_ % 2){ # @_ : $name => ( where => ... ) |
105 | ($name, %args) = @_; |
73766a27 |
106 | } |
f5ee065f |
107 | else{ # @_ : (name => $name, where => ...) |
108 | %args = @_; |
73766a27 |
109 | } |
110 | |
f5ee065f |
111 | if(!defined $name){ |
112 | if(!defined($name = $args{name})){ |
113 | $name = '__ANON__'; |
114 | } |
cd2b9201 |
115 | } |
d4571def |
116 | |
f5ee065f |
117 | $args{name} = $name; |
7dbebb1b |
118 | |
f5ee065f |
119 | my $package_defined_in = $args{package_defined_in} ||= caller(1); |
d4571def |
120 | |
f5ee065f |
121 | my $existing = $TYPE{$name}; |
122 | if($existing && $existing->{package_defined_in} ne $package_defined_in){ |
123 | confess("The type constraint '$name' has already been created in " |
124 | . "$existing->{package_defined_in} and cannot be created again in $package_defined_in"); |
125 | } |
d4571def |
126 | |
24410e3a |
127 | $args{constraint} = delete($args{where}) if exists $args{where}; |
128 | $args{optimized} = delete $args{optimized_as} if exists $args{optimized_as}; |
0d9fea22 |
129 | |
f5ee065f |
130 | my $constraint; |
131 | if($mode eq 'subtype'){ |
24410e3a |
132 | my $parent = delete($args{as}) |
133 | or confess('A subtype cannot consist solely of a name, it must have a parent'); |
7a50b450 |
134 | |
24410e3a |
135 | $constraint = find_or_create_isa_type_constraint($parent)->create_child_type(%args); |
7a50b450 |
136 | } |
137 | else{ |
f5ee065f |
138 | $constraint = Mouse::Meta::TypeConstraint->new(%args); |
73766a27 |
139 | } |
7dbebb1b |
140 | |
f5ee065f |
141 | return $TYPE{$name} = $constraint; |
142 | } |
7dbebb1b |
143 | |
f5ee065f |
144 | sub type { |
145 | return _create_type('type', @_); |
146 | } |
d4571def |
147 | |
f5ee065f |
148 | sub subtype { |
149 | return _create_type('subtype', @_); |
4188b837 |
150 | } |
151 | |
139d92d2 |
152 | sub coerce { |
ffbbf459 |
153 | my $type_name = shift; |
61a02a3a |
154 | |
ffbbf459 |
155 | my $type = find_type_constraint($type_name) |
156 | or confess("Cannot find type '$type_name', perhaps you forgot to load it."); |
61a02a3a |
157 | |
ffbbf459 |
158 | $type->_add_type_coercions(@_); |
cd2b9201 |
159 | return; |
4188b837 |
160 | } |
161 | |
139d92d2 |
162 | sub class_type { |
ecc6e3b1 |
163 | my($name, $conf) = @_; |
d9f8c878 |
164 | if ($conf && $conf->{class}) { |
165 | # No, you're using this wrong |
166 | warn "class_type() should be class_type(ClassName). Perhaps you're looking for subtype $name => as '$conf->{class}'?"; |
f5ee065f |
167 | _create_type 'type', $name => ( |
168 | as => $conf->{class}, |
169 | |
170 | type => 'Class', |
171 | ); |
a497c7d3 |
172 | } |
173 | else { |
f5ee065f |
174 | _create_type 'type', $name => ( |
175 | optimized_as => sub { blessed($_[0]) && $_[0]->isa($name) }, |
176 | |
177 | type => 'Class', |
d9f8c878 |
178 | ); |
179 | } |
ecc6e3b1 |
180 | } |
181 | |
139d92d2 |
182 | sub role_type { |
47f36c05 |
183 | my($name, $conf) = @_; |
f5ee065f |
184 | my $role = ($conf && $conf->{role}) ? $conf->{role} : $name; |
185 | _create_type 'type', $name => ( |
186 | optimized_as => sub { blessed($_[0]) && does_role($_[0], $role) }, |
187 | |
188 | type => 'Role', |
61a02a3a |
189 | ); |
47f36c05 |
190 | } |
191 | |
4188b837 |
192 | sub typecast_constraints { |
ffbbf459 |
193 | my($class, $pkg, $type, $value) = @_; |
2efc0af1 |
194 | Carp::croak("wrong arguments count") unless @_ == 4; |
eec1bb49 |
195 | |
e763d56e |
196 | Carp::cluck("typecast_constraints() has been deprecated, which was an internal utility anyway"); |
197 | |
ffbbf459 |
198 | return $type->coerce($value); |
4188b837 |
199 | } |
200 | |
d44f0d03 |
201 | sub enum { |
f5ee065f |
202 | my($name, %valid); |
203 | |
01904723 |
204 | # enum ['small', 'medium', 'large'] |
205 | if (ref($_[0]) eq 'ARRAY') { |
f5ee065f |
206 | %valid = map{ $_ => undef } @{ $_[0] }; |
207 | $name = sprintf '(%s)', join '|', sort @{$_[0]}; |
208 | } |
209 | # enum size => 'small', 'medium', 'large' |
210 | else{ |
211 | $name = shift; |
212 | %valid = map{ $_ => undef } @_; |
213 | } |
214 | return _create_type 'type', $name => ( |
215 | optimized_as => sub{ defined($_[0]) && !ref($_[0]) && exists $valid{$_[0]} }, |
216 | |
217 | type => 'Enum', |
218 | ); |
219 | } |
220 | |
221 | sub _find_or_create_regular_type{ |
222 | my($spec) = @_; |
223 | |
224 | return $TYPE{$spec} if exists $TYPE{$spec}; |
01904723 |
225 | |
f5ee065f |
226 | my $meta = Mouse::Meta::Module::class_of($spec); |
227 | |
228 | if(!$meta){ |
229 | return; |
01904723 |
230 | } |
231 | |
f5ee065f |
232 | my $check; |
233 | my $type; |
57f0e313 |
234 | if($meta->isa('Mouse::Meta::Role')){ |
f5ee065f |
235 | $check = sub{ |
236 | return blessed($_[0]) && $_[0]->does($spec); |
237 | }; |
238 | $type = 'Role'; |
239 | } |
240 | else{ |
241 | $check = sub{ |
242 | return blessed($_[0]) && $_[0]->isa($spec); |
243 | }; |
244 | $type = 'Class'; |
245 | } |
246 | |
247 | warn "#CREATE a $type type for $spec\n" if _DEBUG; |
d44f0d03 |
248 | |
f5ee065f |
249 | return $TYPE{$spec} = Mouse::Meta::TypeConstraint->new( |
3b89ea91 |
250 | name => $spec, |
251 | optimized => $check, |
f5ee065f |
252 | |
3b89ea91 |
253 | type => $type, |
d44f0d03 |
254 | ); |
255 | } |
256 | |
f5ee065f |
257 | $TYPE{ArrayRef}{constraint_generator} = sub { |
258 | my($type_parameter) = @_; |
3b89ea91 |
259 | my $check = $type_parameter->_compiled_type_constraint; |
321e5271 |
260 | |
f5ee065f |
261 | return sub{ |
262 | foreach my $value (@{$_}) { |
263 | return undef unless $check->($value); |
264 | } |
265 | return 1; |
266 | } |
267 | }; |
268 | $TYPE{HashRef}{constraint_generator} = sub { |
269 | my($type_parameter) = @_; |
3b89ea91 |
270 | my $check = $type_parameter->_compiled_type_constraint; |
f5ee065f |
271 | |
272 | return sub{ |
273 | foreach my $value(values %{$_}){ |
274 | return undef unless $check->($value); |
275 | } |
276 | return 1; |
277 | }; |
278 | }; |
2efc0af1 |
279 | |
f5ee065f |
280 | # 'Maybe' type accepts 'Any', so it requires parameters |
281 | $TYPE{Maybe}{constraint_generator} = sub { |
282 | my($type_parameter) = @_; |
3b89ea91 |
283 | my $check = $type_parameter->_compiled_type_constraint; |
2efc0af1 |
284 | |
f5ee065f |
285 | return sub{ |
286 | return !defined($_) || $check->($_); |
287 | }; |
288 | }; |
289 | |
290 | sub _find_or_create_parameterized_type{ |
291 | my($base, $param) = @_; |
292 | |
293 | my $name = sprintf '%s[%s]', $base->name, $param->name; |
294 | |
295 | $TYPE{$name} ||= do{ |
296 | warn "#CREATE a Parameterized type for $name\n" if _DEBUG; |
297 | |
298 | my $generator = $base->{constraint_generator}; |
299 | |
300 | if(!$generator){ |
301 | confess("The $name constraint cannot be used, because $param doesn't subtype from a parameterizable type"); |
2efc0af1 |
302 | } |
f5ee065f |
303 | |
304 | Mouse::Meta::TypeConstraint->new( |
305 | name => $name, |
306 | parent => $base, |
307 | constraint => $generator->($param), |
308 | |
309 | type => 'Parameterized', |
310 | ); |
311 | } |
312 | } |
313 | sub _find_or_create_union_type{ |
57f0e313 |
314 | my @types = map{ $_->{type_constraints} ? @{$_->{type_constraints}} : $_ } @_; |
f5ee065f |
315 | |
316 | my $name = join '|', map{ $_->name } @types; |
317 | |
318 | $TYPE{$name} ||= do{ |
319 | warn "# CREATE a Union type for ", Mouse::Util::english_list(@types),"\n" if _DEBUG; |
320 | |
f5ee065f |
321 | return Mouse::Meta::TypeConstraint->new( |
3b89ea91 |
322 | name => $name, |
323 | type_constraints => \@types, |
f5ee065f |
324 | |
3b89ea91 |
325 | type => 'Union', |
f5ee065f |
326 | ); |
327 | }; |
328 | } |
329 | |
330 | # The type parser |
331 | sub _parse_type{ |
332 | my($spec, $start) = @_; |
333 | |
334 | my @list; |
335 | my $subtype; |
336 | |
337 | my $len = length $spec; |
338 | my $i; |
339 | |
340 | for($i = $start; $i < $len; $i++){ |
341 | my $char = substr($spec, $i, 1); |
342 | |
343 | if($char eq '['){ |
57f0e313 |
344 | my $base = _find_or_create_regular_type( substr($spec, $start, $i - $start) ) |
f5ee065f |
345 | or return; |
346 | |
347 | ($i, $subtype) = _parse_type($spec, $i+1) |
348 | or return; |
349 | $start = $i+1; # reset |
350 | |
351 | push @list, _find_or_create_parameterized_type($base => $subtype); |
321e5271 |
352 | } |
f5ee065f |
353 | elsif($char eq ']'){ |
354 | $len = $i+1; |
355 | last; |
321e5271 |
356 | } |
f5ee065f |
357 | elsif($char eq '|'){ |
57f0e313 |
358 | my $type = _find_or_create_regular_type( substr($spec, $start, $i - $start) ); |
359 | |
57f0e313 |
360 | if(!defined $type){ |
3b89ea91 |
361 | # XXX: Mouse creates a new class type, but Moose does not. |
362 | $type = class_type( substr($spec, $start, $i - $start) ); |
57f0e313 |
363 | } |
f5ee065f |
364 | |
365 | push @list, $type; |
366 | |
367 | ($i, $subtype) = _parse_type($spec, $i+1) |
368 | or return; |
369 | |
370 | $start = $i+1; # reset |
371 | |
372 | push @list, $subtype; |
321e5271 |
373 | } |
374 | } |
f5ee065f |
375 | if($i - $start){ |
376 | push @list, _find_or_create_regular_type(substr $spec, $start, $i - $start); |
377 | } |
321e5271 |
378 | |
f5ee065f |
379 | if(@list == 0){ |
380 | return; |
381 | } |
382 | elsif(@list == 1){ |
383 | return ($len, $list[0]); |
993e62a7 |
384 | } |
385 | else{ |
f5ee065f |
386 | return ($len, _find_or_create_union_type(@list)); |
993e62a7 |
387 | } |
321e5271 |
388 | } |
389 | |
f5ee065f |
390 | |
391 | sub find_type_constraint { |
392 | my($spec) = @_; |
e98220ab |
393 | return $spec if blessed($spec) && $spec->isa('Mouse::Meta::TypeConstraint'); |
f5ee065f |
394 | |
395 | $spec =~ s/\s+//g; |
396 | return $TYPE{$spec}; |
2efc0af1 |
397 | } |
398 | |
f5ee065f |
399 | sub find_or_parse_type_constraint { |
400 | my($spec) = @_; |
e98220ab |
401 | return $spec if blessed($spec) && $spec->isa('Mouse::Meta::TypeConstraint'); |
9c85e9dc |
402 | |
f5ee065f |
403 | $spec =~ s/\s+//g; |
404 | return $TYPE{$spec} || do{ |
405 | my($pos, $type) = _parse_type($spec, 0); |
406 | $type; |
407 | }; |
408 | } |
321e5271 |
409 | |
f5ee065f |
410 | sub find_or_create_does_type_constraint{ |
411 | my $type = find_or_parse_type_constriant(@_) || role_type(@_); |
94593ae8 |
412 | |
f5ee065f |
413 | if($type->{type} && $type->{type} ne 'Role'){ |
414 | Carp::cluck("$type is not a role type"); |
321e5271 |
415 | } |
f5ee065f |
416 | return $type; |
417 | } |
418 | |
419 | sub find_or_create_isa_type_constraint { |
420 | return find_or_parse_type_constraint(@_) || class_type(@_); |
321e5271 |
421 | } |
422 | |
d60c78b9 |
423 | 1; |
424 | |
6feb83f1 |
425 | __END__ |
426 | |
427 | =head1 NAME |
428 | |
5893ee36 |
429 | Mouse::Util::TypeConstraints - Type constraint system for Mouse |
430 | |
431 | =head2 SYNOPSIS |
432 | |
433 | use Mouse::Util::TypeConstraints; |
434 | |
435 | subtype 'Natural' |
436 | => as 'Int' |
437 | => where { $_ > 0 }; |
438 | |
439 | subtype 'NaturalLessThanTen' |
440 | => as 'Natural' |
441 | => where { $_ < 10 } |
442 | => message { "This number ($_) is not less than ten!" }; |
443 | |
444 | coerce 'Num' |
445 | => from 'Str' |
446 | => via { 0+$_ }; |
447 | |
448 | enum 'RGBColors' => qw(red green blue); |
449 | |
450 | no Mouse::Util::TypeConstraints; |
451 | |
452 | =head1 DESCRIPTION |
453 | |
454 | This module provides Mouse with the ability to create custom type |
455 | constraints to be used in attribute definition. |
456 | |
457 | =head2 Important Caveat |
458 | |
459 | This is B<NOT> a type system for Perl 5. These are type constraints, |
460 | and they are not used by Mouse unless you tell it to. No type |
461 | inference is performed, expressions are not typed, etc. etc. etc. |
462 | |
463 | A type constraint is at heart a small "check if a value is valid" |
464 | function. A constraint can be associated with an attribute. This |
465 | simplifies parameter validation, and makes your code clearer to read, |
466 | because you can refer to constraints by name. |
467 | |
468 | =head2 Slightly Less Important Caveat |
469 | |
470 | It is B<always> a good idea to quote your type names. |
471 | |
472 | This prevents Perl from trying to execute the call as an indirect |
473 | object call. This can be an issue when you have a subtype with the |
474 | same name as a valid class. |
475 | |
476 | For instance: |
477 | |
478 | subtype DateTime => as Object => where { $_->isa('DateTime') }; |
479 | |
480 | will I<just work>, while this: |
481 | |
482 | use DateTime; |
483 | subtype DateTime => as Object => where { $_->isa('DateTime') }; |
484 | |
485 | will fail silently and cause many headaches. The simple way to solve |
486 | this, as well as future proof your subtypes from classes which have |
487 | yet to have been created, is to quote the type name: |
488 | |
489 | use DateTime; |
490 | subtype 'DateTime' => as 'Object' => where { $_->isa('DateTime') }; |
491 | |
492 | =head2 Default Type Constraints |
493 | |
494 | This module also provides a simple hierarchy for Perl 5 types, here is |
495 | that hierarchy represented visually. |
496 | |
497 | Any |
498 | Item |
499 | Bool |
500 | Maybe[`a] |
501 | Undef |
502 | Defined |
503 | Value |
504 | Num |
505 | Int |
506 | Str |
507 | ClassName |
508 | RoleName |
509 | Ref |
510 | ScalarRef |
511 | ArrayRef[`a] |
512 | HashRef[`a] |
513 | CodeRef |
514 | RegexpRef |
515 | GlobRef |
516 | FileHandle |
517 | Object |
5893ee36 |
518 | |
519 | B<NOTE:> Any type followed by a type parameter C<[`a]> can be |
520 | parameterized, this means you can say: |
521 | |
522 | ArrayRef[Int] # an array of integers |
523 | HashRef[CodeRef] # a hash of str to CODE ref mappings |
524 | Maybe[Str] # value may be a string, may be undefined |
525 | |
526 | If Mouse finds a name in brackets that it does not recognize as an |
527 | existing type, it assumes that this is a class name, for example |
528 | C<ArrayRef[DateTime]>. |
529 | |
530 | B<NOTE:> Unless you parameterize a type, then it is invalid to include |
531 | the square brackets. I.e. C<ArrayRef[]> will be treated as a new type |
532 | name, I<not> as a parameterization of C<ArrayRef>. |
533 | |
534 | B<NOTE:> The C<Undef> type constraint for the most part works |
535 | correctly now, but edge cases may still exist, please use it |
536 | sparingly. |
537 | |
538 | B<NOTE:> The C<ClassName> type constraint does a complex package |
539 | existence check. This means that your class B<must> be loaded for this |
540 | type constraint to pass. |
541 | |
542 | B<NOTE:> The C<RoleName> constraint checks a string is a I<package |
543 | name> which is a role, like C<'MyApp::Role::Comparable'>. The C<Role> |
544 | constraint checks that an I<object does> the named role. |
545 | |
546 | =head2 Type Constraint Naming |
547 | |
548 | Type name declared via this module can only contain alphanumeric |
549 | characters, colons (:), and periods (.). |
550 | |
551 | Since the types created by this module are global, it is suggested |
552 | that you namespace your types just as you would namespace your |
553 | modules. So instead of creating a I<Color> type for your |
554 | B<My::Graphics> module, you would call the type |
555 | I<My::Graphics::Types::Color> instead. |
556 | |
557 | =head2 Use with Other Constraint Modules |
558 | |
559 | This module can play nicely with other constraint modules with some |
560 | slight tweaking. The C<where> clause in types is expected to be a |
561 | C<CODE> reference which checks it's first argument and returns a |
562 | boolean. Since most constraint modules work in a similar way, it |
563 | should be simple to adapt them to work with Mouse. |
564 | |
565 | For instance, this is how you could use it with |
566 | L<Declare::Constraints::Simple> to declare a completely new type. |
567 | |
568 | type 'HashOfArrayOfObjects', |
569 | { |
570 | where => IsHashRef( |
571 | -keys => HasLength, |
572 | -values => IsArrayRef(IsObject) |
573 | ) |
574 | }; |
575 | |
576 | Here is an example of using L<Test::Deep> and it's non-test |
577 | related C<eq_deeply> function. |
578 | |
579 | type 'ArrayOfHashOfBarsAndRandomNumbers' |
580 | => where { |
581 | eq_deeply($_, |
582 | array_each(subhashof({ |
583 | bar => isa('Bar'), |
584 | random_number => ignore() |
585 | }))) |
586 | }; |
6feb83f1 |
587 | |
588 | =head1 METHODS |
589 | |
24410e3a |
590 | =head2 C<< list_all_builtin_type_constraints -> (Names) >> |
6feb83f1 |
591 | |
24410e3a |
592 | Returns the names of builtin type constraints. |
593 | |
594 | =head2 C<< list_all_type_constraints -> (Names) >> |
595 | |
596 | Returns the names of all the type constraints. |
6feb83f1 |
597 | |
c91d12e0 |
598 | =head1 FUNCTIONS |
599 | |
600 | =over 4 |
601 | |
1820fffe |
602 | =item C<< subtype 'Name' => as 'Parent' => where { } ... -> Mouse::Meta::TypeConstraint >> |
c91d12e0 |
603 | |
1820fffe |
604 | =item C<< subtype as 'Parent' => where { } ... -> Mouse::Meta::TypeConstraint >> |
c91d12e0 |
605 | |
1820fffe |
606 | =item C<< class_type ($class, ?$options) -> Mouse::Meta::TypeConstraint >> |
c91d12e0 |
607 | |
1820fffe |
608 | =item C<< role_type ($role, ?$options) -> Mouse::Meta::TypeConstraint >> |
c91d12e0 |
609 | |
1820fffe |
610 | =item C<< enum (\@values) -> Mouse::Meta::TypeConstraint >> |
611 | |
612 | =back |
613 | |
614 | =over 4 |
615 | |
616 | =item C<< find_type_constraint(Type) -> Mouse::Meta::TypeConstraint >> |
c91d12e0 |
617 | |
618 | =back |
619 | |
5893ee36 |
620 | =head1 THANKS |
621 | |
1820fffe |
622 | Much of this documentation was taken from C<Moose::Util::TypeConstraints> |
623 | |
624 | =head1 SEE ALSO |
625 | |
626 | L<Moose::Util::TypeConstraints> |
5893ee36 |
627 | |
6feb83f1 |
628 | =cut |
629 | |
630 | |