Commit | Line | Data |
3b46bd49 |
1 | package Mouse::Util::TypeConstraints; |
bc69ee88 |
2 | use Mouse::Util qw(does_role not_supported); # enables strict and warnings |
9baf5d6b |
3 | |
f5ee065f |
4 | use Carp qw(confess); |
6c169c50 |
5 | use Scalar::Util qw/blessed looks_like_number openhandle/; |
6d28c5cf |
6 | |
684db121 |
7 | use Mouse::Meta::TypeConstraint; |
bc69ee88 |
8 | use Mouse::Exporter; |
9 | |
10 | Mouse::Exporter->setup_import_methods( |
11 | as_is => [qw( |
5d4810c1 |
12 | as where message optimize_as |
13 | from via |
bc69ee88 |
14 | type subtype coerce class_type role_type enum |
15 | find_type_constraint |
16 | )], |
139d92d2 |
17 | ); |
18 | |
cceb0e25 |
19 | my %TYPE; |
4188b837 |
20 | |
5d4810c1 |
21 | sub as ($) { (as => $_[0]) } |
22 | sub where (&) { (where => $_[0]) } |
23 | sub message (&) { (message => $_[0]) } |
24 | sub optimize_as (&) { (optimize_as => $_[0]) } |
61a02a3a |
25 | |
73766a27 |
26 | sub from { @_ } |
cd2b9201 |
27 | sub via (&) { $_[0] } |
61a02a3a |
28 | |
321e5271 |
29 | BEGIN { |
993e62a7 |
30 | my %builtins = ( |
f5ee065f |
31 | Any => undef, # null check |
32 | Item => undef, # null check |
33 | Maybe => undef, # null check |
73766a27 |
34 | |
35 | Bool => sub { $_[0] ? $_[0] eq '1' : 1 }, |
c91d12e0 |
36 | Undef => sub { !defined($_[0]) }, |
37 | Defined => sub { defined($_[0]) }, |
38 | Value => sub { defined($_[0]) && !ref($_[0]) }, |
39 | Num => sub { !ref($_[0]) && looks_like_number($_[0]) }, |
40 | Int => sub { defined($_[0]) && !ref($_[0]) && $_[0] =~ /^-?[0-9]+$/ }, |
41 | Str => sub { defined($_[0]) && !ref($_[0]) }, |
c91d12e0 |
42 | Ref => sub { ref($_[0]) }, |
43 | |
44 | ScalarRef => sub { ref($_[0]) eq 'SCALAR' }, |
45 | ArrayRef => sub { ref($_[0]) eq 'ARRAY' }, |
46 | HashRef => sub { ref($_[0]) eq 'HASH' }, |
47 | CodeRef => sub { ref($_[0]) eq 'CODE' }, |
48 | RegexpRef => sub { ref($_[0]) eq 'Regexp' }, |
49 | GlobRef => sub { ref($_[0]) eq 'GLOB' }, |
381f326a |
50 | |
51 | FileHandle => sub { |
c91d12e0 |
52 | ref($_[0]) eq 'GLOB' && openhandle($_[0]) |
381f326a |
53 | or |
c91d12e0 |
54 | blessed($_[0]) && $_[0]->isa("IO::Handle") |
abe4e887 |
55 | }, |
381f326a |
56 | |
c91d12e0 |
57 | Object => sub { blessed($_[0]) && blessed($_[0]) ne 'Regexp' }, |
73766a27 |
58 | |
59 | ClassName => sub { Mouse::Util::is_class_loaded($_[0]) }, |
d4571def |
60 | RoleName => sub { (Mouse::Util::find_meta($_[0]) || return 0)->isa('Mouse::Meta::Role') }, |
8a7f2a8a |
61 | ); |
993e62a7 |
62 | |
63 | while (my ($name, $code) = each %builtins) { |
73766a27 |
64 | $TYPE{$name} = Mouse::Meta::TypeConstraint->new( |
3b89ea91 |
65 | name => $name, |
66 | optimized => $code, |
73766a27 |
67 | ); |
78b13827 |
68 | } |
d3982c7e |
69 | |
deb9a0f3 |
70 | sub optimized_constraints { # DEPRECATED |
f5ee065f |
71 | Carp::cluck('optimized_constraints() has been deprecated'); |
72 | return \%TYPE; |
73 | } |
d4571def |
74 | |
993e62a7 |
75 | my @builtins = keys %TYPE; |
76 | sub list_all_builtin_type_constraints { @builtins } |
77 | |
78 | sub list_all_type_constraints { keys %TYPE } |
381f326a |
79 | } |
d3982c7e |
80 | |
f5ee065f |
81 | sub _create_type{ |
82 | my $mode = shift; |
83 | |
73766a27 |
84 | my $name; |
f5ee065f |
85 | my %args; |
73766a27 |
86 | |
f5ee065f |
87 | if(@_ == 1 && ref $_[0]){ # @_ : { name => $name, where => ... } |
88 | %args = %{$_[0]}; |
73766a27 |
89 | } |
f5ee065f |
90 | elsif(@_ == 2 && ref $_[1]){ # @_ : $name => { where => ... } |
73766a27 |
91 | $name = $_[0]; |
f5ee065f |
92 | %args = %{$_[1]}; |
73766a27 |
93 | } |
f5ee065f |
94 | elsif(@_ % 2){ # @_ : $name => ( where => ... ) |
95 | ($name, %args) = @_; |
73766a27 |
96 | } |
f5ee065f |
97 | else{ # @_ : (name => $name, where => ...) |
98 | %args = @_; |
73766a27 |
99 | } |
100 | |
f5ee065f |
101 | if(!defined $name){ |
102 | if(!defined($name = $args{name})){ |
103 | $name = '__ANON__'; |
104 | } |
cd2b9201 |
105 | } |
d4571def |
106 | |
f5ee065f |
107 | $args{name} = $name; |
b8434acc |
108 | my $parent; |
109 | if($mode eq 'subtype'){ |
110 | $parent = delete $args{as}; |
111 | if(!$parent){ |
112 | $parent = delete $args{name}; |
113 | $name = '__ANON__'; |
114 | } |
115 | } |
7dbebb1b |
116 | |
f5ee065f |
117 | my $package_defined_in = $args{package_defined_in} ||= caller(1); |
d4571def |
118 | |
f5ee065f |
119 | my $existing = $TYPE{$name}; |
120 | if($existing && $existing->{package_defined_in} ne $package_defined_in){ |
121 | confess("The type constraint '$name' has already been created in " |
122 | . "$existing->{package_defined_in} and cannot be created again in $package_defined_in"); |
123 | } |
d4571def |
124 | |
b8434acc |
125 | $args{constraint} = delete $args{where} if exists $args{where}; |
24410e3a |
126 | $args{optimized} = delete $args{optimized_as} if exists $args{optimized_as}; |
0d9fea22 |
127 | |
f5ee065f |
128 | my $constraint; |
129 | if($mode eq 'subtype'){ |
24410e3a |
130 | $constraint = find_or_create_isa_type_constraint($parent)->create_child_type(%args); |
7a50b450 |
131 | } |
132 | else{ |
f5ee065f |
133 | $constraint = Mouse::Meta::TypeConstraint->new(%args); |
73766a27 |
134 | } |
7dbebb1b |
135 | |
f5ee065f |
136 | return $TYPE{$name} = $constraint; |
137 | } |
7dbebb1b |
138 | |
f5ee065f |
139 | sub type { |
140 | return _create_type('type', @_); |
141 | } |
d4571def |
142 | |
f5ee065f |
143 | sub subtype { |
144 | return _create_type('subtype', @_); |
4188b837 |
145 | } |
146 | |
139d92d2 |
147 | sub coerce { |
ffbbf459 |
148 | my $type_name = shift; |
61a02a3a |
149 | |
ffbbf459 |
150 | my $type = find_type_constraint($type_name) |
151 | or confess("Cannot find type '$type_name', perhaps you forgot to load it."); |
61a02a3a |
152 | |
ffbbf459 |
153 | $type->_add_type_coercions(@_); |
cd2b9201 |
154 | return; |
4188b837 |
155 | } |
156 | |
139d92d2 |
157 | sub class_type { |
ecc6e3b1 |
158 | my($name, $conf) = @_; |
d9f8c878 |
159 | if ($conf && $conf->{class}) { |
160 | # No, you're using this wrong |
161 | warn "class_type() should be class_type(ClassName). Perhaps you're looking for subtype $name => as '$conf->{class}'?"; |
f5ee065f |
162 | _create_type 'type', $name => ( |
163 | as => $conf->{class}, |
164 | |
165 | type => 'Class', |
166 | ); |
a497c7d3 |
167 | } |
168 | else { |
f5ee065f |
169 | _create_type 'type', $name => ( |
170 | optimized_as => sub { blessed($_[0]) && $_[0]->isa($name) }, |
171 | |
172 | type => 'Class', |
d9f8c878 |
173 | ); |
174 | } |
ecc6e3b1 |
175 | } |
176 | |
139d92d2 |
177 | sub role_type { |
47f36c05 |
178 | my($name, $conf) = @_; |
f5ee065f |
179 | my $role = ($conf && $conf->{role}) ? $conf->{role} : $name; |
180 | _create_type 'type', $name => ( |
181 | optimized_as => sub { blessed($_[0]) && does_role($_[0], $role) }, |
182 | |
183 | type => 'Role', |
61a02a3a |
184 | ); |
47f36c05 |
185 | } |
186 | |
deb9a0f3 |
187 | sub typecast_constraints { # DEPRECATED |
ffbbf459 |
188 | my($class, $pkg, $type, $value) = @_; |
2efc0af1 |
189 | Carp::croak("wrong arguments count") unless @_ == 4; |
eec1bb49 |
190 | |
e763d56e |
191 | Carp::cluck("typecast_constraints() has been deprecated, which was an internal utility anyway"); |
192 | |
ffbbf459 |
193 | return $type->coerce($value); |
4188b837 |
194 | } |
195 | |
d44f0d03 |
196 | sub enum { |
f5ee065f |
197 | my($name, %valid); |
198 | |
01904723 |
199 | # enum ['small', 'medium', 'large'] |
200 | if (ref($_[0]) eq 'ARRAY') { |
f5ee065f |
201 | %valid = map{ $_ => undef } @{ $_[0] }; |
202 | $name = sprintf '(%s)', join '|', sort @{$_[0]}; |
203 | } |
204 | # enum size => 'small', 'medium', 'large' |
205 | else{ |
206 | $name = shift; |
207 | %valid = map{ $_ => undef } @_; |
208 | } |
209 | return _create_type 'type', $name => ( |
210 | optimized_as => sub{ defined($_[0]) && !ref($_[0]) && exists $valid{$_[0]} }, |
211 | |
212 | type => 'Enum', |
213 | ); |
214 | } |
215 | |
216 | sub _find_or_create_regular_type{ |
217 | my($spec) = @_; |
218 | |
219 | return $TYPE{$spec} if exists $TYPE{$spec}; |
01904723 |
220 | |
7727a2f0 |
221 | my $meta = Mouse::Util::get_metaclass_by_name($spec); |
f5ee065f |
222 | |
223 | if(!$meta){ |
224 | return; |
01904723 |
225 | } |
226 | |
f5ee065f |
227 | my $check; |
228 | my $type; |
57f0e313 |
229 | if($meta->isa('Mouse::Meta::Role')){ |
f5ee065f |
230 | $check = sub{ |
231 | return blessed($_[0]) && $_[0]->does($spec); |
232 | }; |
233 | $type = 'Role'; |
234 | } |
235 | else{ |
236 | $check = sub{ |
237 | return blessed($_[0]) && $_[0]->isa($spec); |
238 | }; |
239 | $type = 'Class'; |
240 | } |
241 | |
f5ee065f |
242 | return $TYPE{$spec} = Mouse::Meta::TypeConstraint->new( |
3b89ea91 |
243 | name => $spec, |
244 | optimized => $check, |
f5ee065f |
245 | |
3b89ea91 |
246 | type => $type, |
d44f0d03 |
247 | ); |
248 | } |
249 | |
f5ee065f |
250 | $TYPE{ArrayRef}{constraint_generator} = sub { |
251 | my($type_parameter) = @_; |
3b89ea91 |
252 | my $check = $type_parameter->_compiled_type_constraint; |
321e5271 |
253 | |
f5ee065f |
254 | return sub{ |
255 | foreach my $value (@{$_}) { |
256 | return undef unless $check->($value); |
257 | } |
258 | return 1; |
259 | } |
260 | }; |
261 | $TYPE{HashRef}{constraint_generator} = sub { |
262 | my($type_parameter) = @_; |
3b89ea91 |
263 | my $check = $type_parameter->_compiled_type_constraint; |
f5ee065f |
264 | |
265 | return sub{ |
266 | foreach my $value(values %{$_}){ |
267 | return undef unless $check->($value); |
268 | } |
269 | return 1; |
270 | }; |
271 | }; |
2efc0af1 |
272 | |
f5ee065f |
273 | # 'Maybe' type accepts 'Any', so it requires parameters |
274 | $TYPE{Maybe}{constraint_generator} = sub { |
275 | my($type_parameter) = @_; |
3b89ea91 |
276 | my $check = $type_parameter->_compiled_type_constraint; |
2efc0af1 |
277 | |
f5ee065f |
278 | return sub{ |
279 | return !defined($_) || $check->($_); |
280 | }; |
281 | }; |
282 | |
283 | sub _find_or_create_parameterized_type{ |
284 | my($base, $param) = @_; |
285 | |
286 | my $name = sprintf '%s[%s]', $base->name, $param->name; |
287 | |
288 | $TYPE{$name} ||= do{ |
f5ee065f |
289 | my $generator = $base->{constraint_generator}; |
290 | |
291 | if(!$generator){ |
292 | confess("The $name constraint cannot be used, because $param doesn't subtype from a parameterizable type"); |
2efc0af1 |
293 | } |
f5ee065f |
294 | |
295 | Mouse::Meta::TypeConstraint->new( |
296 | name => $name, |
297 | parent => $base, |
298 | constraint => $generator->($param), |
299 | |
300 | type => 'Parameterized', |
301 | ); |
302 | } |
303 | } |
304 | sub _find_or_create_union_type{ |
30b28db3 |
305 | my @types = sort{ $a cmp $b } map{ $_->{type_constraints} ? @{$_->{type_constraints}} : $_ } @_; |
f5ee065f |
306 | |
30b28db3 |
307 | my $name = join '|', @types; |
f5ee065f |
308 | |
309 | $TYPE{$name} ||= do{ |
f5ee065f |
310 | return Mouse::Meta::TypeConstraint->new( |
3b89ea91 |
311 | name => $name, |
312 | type_constraints => \@types, |
f5ee065f |
313 | |
3b89ea91 |
314 | type => 'Union', |
f5ee065f |
315 | ); |
316 | }; |
317 | } |
318 | |
319 | # The type parser |
320 | sub _parse_type{ |
321 | my($spec, $start) = @_; |
322 | |
323 | my @list; |
324 | my $subtype; |
325 | |
326 | my $len = length $spec; |
327 | my $i; |
328 | |
329 | for($i = $start; $i < $len; $i++){ |
330 | my $char = substr($spec, $i, 1); |
331 | |
332 | if($char eq '['){ |
57f0e313 |
333 | my $base = _find_or_create_regular_type( substr($spec, $start, $i - $start) ) |
f5ee065f |
334 | or return; |
335 | |
336 | ($i, $subtype) = _parse_type($spec, $i+1) |
337 | or return; |
338 | $start = $i+1; # reset |
339 | |
340 | push @list, _find_or_create_parameterized_type($base => $subtype); |
321e5271 |
341 | } |
f5ee065f |
342 | elsif($char eq ']'){ |
343 | $len = $i+1; |
344 | last; |
321e5271 |
345 | } |
f5ee065f |
346 | elsif($char eq '|'){ |
57f0e313 |
347 | my $type = _find_or_create_regular_type( substr($spec, $start, $i - $start) ); |
348 | |
57f0e313 |
349 | if(!defined $type){ |
3b89ea91 |
350 | # XXX: Mouse creates a new class type, but Moose does not. |
351 | $type = class_type( substr($spec, $start, $i - $start) ); |
57f0e313 |
352 | } |
f5ee065f |
353 | |
354 | push @list, $type; |
355 | |
356 | ($i, $subtype) = _parse_type($spec, $i+1) |
357 | or return; |
358 | |
359 | $start = $i+1; # reset |
360 | |
361 | push @list, $subtype; |
321e5271 |
362 | } |
363 | } |
f5ee065f |
364 | if($i - $start){ |
29376895 |
365 | my $type = _find_or_create_regular_type( substr $spec, $start, $i - $start ); |
366 | |
367 | if(defined $type){ |
368 | push @list, $type; |
369 | } |
370 | elsif($start != 0) { |
371 | # RT #50421 |
372 | # create a new class type |
373 | push @list, class_type( substr $spec, $start, $i - $start ); |
374 | } |
f5ee065f |
375 | } |
321e5271 |
376 | |
f5ee065f |
377 | if(@list == 0){ |
378 | return; |
379 | } |
380 | elsif(@list == 1){ |
381 | return ($len, $list[0]); |
993e62a7 |
382 | } |
383 | else{ |
f5ee065f |
384 | return ($len, _find_or_create_union_type(@list)); |
993e62a7 |
385 | } |
321e5271 |
386 | } |
387 | |
f5ee065f |
388 | |
389 | sub find_type_constraint { |
390 | my($spec) = @_; |
e98220ab |
391 | return $spec if blessed($spec) && $spec->isa('Mouse::Meta::TypeConstraint'); |
f5ee065f |
392 | |
393 | $spec =~ s/\s+//g; |
394 | return $TYPE{$spec}; |
2efc0af1 |
395 | } |
396 | |
f5ee065f |
397 | sub find_or_parse_type_constraint { |
398 | my($spec) = @_; |
e98220ab |
399 | return $spec if blessed($spec) && $spec->isa('Mouse::Meta::TypeConstraint'); |
9c85e9dc |
400 | |
f5ee065f |
401 | $spec =~ s/\s+//g; |
402 | return $TYPE{$spec} || do{ |
403 | my($pos, $type) = _parse_type($spec, 0); |
404 | $type; |
405 | }; |
406 | } |
321e5271 |
407 | |
f5ee065f |
408 | sub find_or_create_does_type_constraint{ |
bddbe49f |
409 | return find_or_parse_type_constraint(@_) || role_type(@_); |
f5ee065f |
410 | } |
411 | |
412 | sub find_or_create_isa_type_constraint { |
413 | return find_or_parse_type_constraint(@_) || class_type(@_); |
321e5271 |
414 | } |
415 | |
d60c78b9 |
416 | 1; |
417 | |
6feb83f1 |
418 | __END__ |
419 | |
420 | =head1 NAME |
421 | |
5893ee36 |
422 | Mouse::Util::TypeConstraints - Type constraint system for Mouse |
423 | |
a25ca8d6 |
424 | =head1 VERSION |
425 | |
034587d8 |
426 | This document describes Mouse version 0.40 |
a25ca8d6 |
427 | |
5893ee36 |
428 | =head2 SYNOPSIS |
429 | |
430 | use Mouse::Util::TypeConstraints; |
431 | |
432 | subtype 'Natural' |
433 | => as 'Int' |
434 | => where { $_ > 0 }; |
435 | |
436 | subtype 'NaturalLessThanTen' |
437 | => as 'Natural' |
438 | => where { $_ < 10 } |
439 | => message { "This number ($_) is not less than ten!" }; |
440 | |
441 | coerce 'Num' |
442 | => from 'Str' |
443 | => via { 0+$_ }; |
444 | |
445 | enum 'RGBColors' => qw(red green blue); |
446 | |
447 | no Mouse::Util::TypeConstraints; |
448 | |
449 | =head1 DESCRIPTION |
450 | |
451 | This module provides Mouse with the ability to create custom type |
452 | constraints to be used in attribute definition. |
453 | |
454 | =head2 Important Caveat |
455 | |
456 | This is B<NOT> a type system for Perl 5. These are type constraints, |
457 | and they are not used by Mouse unless you tell it to. No type |
458 | inference is performed, expressions are not typed, etc. etc. etc. |
459 | |
460 | A type constraint is at heart a small "check if a value is valid" |
461 | function. A constraint can be associated with an attribute. This |
462 | simplifies parameter validation, and makes your code clearer to read, |
463 | because you can refer to constraints by name. |
464 | |
465 | =head2 Slightly Less Important Caveat |
466 | |
467 | It is B<always> a good idea to quote your type names. |
468 | |
469 | This prevents Perl from trying to execute the call as an indirect |
470 | object call. This can be an issue when you have a subtype with the |
471 | same name as a valid class. |
472 | |
473 | For instance: |
474 | |
475 | subtype DateTime => as Object => where { $_->isa('DateTime') }; |
476 | |
477 | will I<just work>, while this: |
478 | |
479 | use DateTime; |
480 | subtype DateTime => as Object => where { $_->isa('DateTime') }; |
481 | |
482 | will fail silently and cause many headaches. The simple way to solve |
483 | this, as well as future proof your subtypes from classes which have |
484 | yet to have been created, is to quote the type name: |
485 | |
486 | use DateTime; |
487 | subtype 'DateTime' => as 'Object' => where { $_->isa('DateTime') }; |
488 | |
489 | =head2 Default Type Constraints |
490 | |
491 | This module also provides a simple hierarchy for Perl 5 types, here is |
492 | that hierarchy represented visually. |
493 | |
494 | Any |
495 | Item |
496 | Bool |
497 | Maybe[`a] |
498 | Undef |
499 | Defined |
500 | Value |
501 | Num |
502 | Int |
503 | Str |
504 | ClassName |
505 | RoleName |
506 | Ref |
507 | ScalarRef |
508 | ArrayRef[`a] |
509 | HashRef[`a] |
510 | CodeRef |
511 | RegexpRef |
512 | GlobRef |
513 | FileHandle |
514 | Object |
5893ee36 |
515 | |
516 | B<NOTE:> Any type followed by a type parameter C<[`a]> can be |
517 | parameterized, this means you can say: |
518 | |
519 | ArrayRef[Int] # an array of integers |
520 | HashRef[CodeRef] # a hash of str to CODE ref mappings |
521 | Maybe[Str] # value may be a string, may be undefined |
522 | |
523 | If Mouse finds a name in brackets that it does not recognize as an |
524 | existing type, it assumes that this is a class name, for example |
525 | C<ArrayRef[DateTime]>. |
526 | |
527 | B<NOTE:> Unless you parameterize a type, then it is invalid to include |
528 | the square brackets. I.e. C<ArrayRef[]> will be treated as a new type |
529 | name, I<not> as a parameterization of C<ArrayRef>. |
530 | |
531 | B<NOTE:> The C<Undef> type constraint for the most part works |
532 | correctly now, but edge cases may still exist, please use it |
533 | sparingly. |
534 | |
535 | B<NOTE:> The C<ClassName> type constraint does a complex package |
536 | existence check. This means that your class B<must> be loaded for this |
537 | type constraint to pass. |
538 | |
539 | B<NOTE:> The C<RoleName> constraint checks a string is a I<package |
540 | name> which is a role, like C<'MyApp::Role::Comparable'>. The C<Role> |
541 | constraint checks that an I<object does> the named role. |
542 | |
543 | =head2 Type Constraint Naming |
544 | |
545 | Type name declared via this module can only contain alphanumeric |
546 | characters, colons (:), and periods (.). |
547 | |
548 | Since the types created by this module are global, it is suggested |
549 | that you namespace your types just as you would namespace your |
550 | modules. So instead of creating a I<Color> type for your |
551 | B<My::Graphics> module, you would call the type |
552 | I<My::Graphics::Types::Color> instead. |
553 | |
554 | =head2 Use with Other Constraint Modules |
555 | |
556 | This module can play nicely with other constraint modules with some |
557 | slight tweaking. The C<where> clause in types is expected to be a |
558 | C<CODE> reference which checks it's first argument and returns a |
559 | boolean. Since most constraint modules work in a similar way, it |
560 | should be simple to adapt them to work with Mouse. |
561 | |
562 | For instance, this is how you could use it with |
563 | L<Declare::Constraints::Simple> to declare a completely new type. |
564 | |
565 | type 'HashOfArrayOfObjects', |
566 | { |
567 | where => IsHashRef( |
568 | -keys => HasLength, |
569 | -values => IsArrayRef(IsObject) |
570 | ) |
571 | }; |
572 | |
573 | Here is an example of using L<Test::Deep> and it's non-test |
574 | related C<eq_deeply> function. |
575 | |
576 | type 'ArrayOfHashOfBarsAndRandomNumbers' |
577 | => where { |
578 | eq_deeply($_, |
579 | array_each(subhashof({ |
580 | bar => isa('Bar'), |
581 | random_number => ignore() |
582 | }))) |
583 | }; |
6feb83f1 |
584 | |
585 | =head1 METHODS |
586 | |
24410e3a |
587 | =head2 C<< list_all_builtin_type_constraints -> (Names) >> |
6feb83f1 |
588 | |
24410e3a |
589 | Returns the names of builtin type constraints. |
590 | |
591 | =head2 C<< list_all_type_constraints -> (Names) >> |
592 | |
593 | Returns the names of all the type constraints. |
6feb83f1 |
594 | |
c91d12e0 |
595 | =head1 FUNCTIONS |
596 | |
597 | =over 4 |
598 | |
1820fffe |
599 | =item C<< subtype 'Name' => as 'Parent' => where { } ... -> Mouse::Meta::TypeConstraint >> |
c91d12e0 |
600 | |
1820fffe |
601 | =item C<< subtype as 'Parent' => where { } ... -> Mouse::Meta::TypeConstraint >> |
c91d12e0 |
602 | |
1820fffe |
603 | =item C<< class_type ($class, ?$options) -> Mouse::Meta::TypeConstraint >> |
c91d12e0 |
604 | |
1820fffe |
605 | =item C<< role_type ($role, ?$options) -> Mouse::Meta::TypeConstraint >> |
c91d12e0 |
606 | |
1820fffe |
607 | =item C<< enum (\@values) -> Mouse::Meta::TypeConstraint >> |
608 | |
609 | =back |
610 | |
611 | =over 4 |
612 | |
613 | =item C<< find_type_constraint(Type) -> Mouse::Meta::TypeConstraint >> |
c91d12e0 |
614 | |
615 | =back |
616 | |
5893ee36 |
617 | =head1 THANKS |
618 | |
1820fffe |
619 | Much of this documentation was taken from C<Moose::Util::TypeConstraints> |
620 | |
621 | =head1 SEE ALSO |
622 | |
623 | L<Moose::Util::TypeConstraints> |
5893ee36 |
624 | |
6feb83f1 |
625 | =cut |
626 | |
627 | |