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( |
12 | as where message from via |
13 | type subtype coerce class_type role_type enum |
14 | find_type_constraint |
15 | )], |
d60c78b9 |
16 | |
bc69ee88 |
17 | _export_to_main => 1, |
139d92d2 |
18 | ); |
19 | |
cceb0e25 |
20 | my %TYPE; |
4188b837 |
21 | |
139d92d2 |
22 | sub as ($) { |
cd2b9201 |
23 | return(as => $_[0]); |
61a02a3a |
24 | } |
139d92d2 |
25 | sub where (&) { |
cd2b9201 |
26 | return(where => $_[0]) |
61a02a3a |
27 | } |
0f1dae9a |
28 | sub message (&) { |
cd2b9201 |
29 | return(message => $_[0]) |
61a02a3a |
30 | } |
31 | |
73766a27 |
32 | sub from { @_ } |
cd2b9201 |
33 | sub via (&) { $_[0] } |
61a02a3a |
34 | |
321e5271 |
35 | BEGIN { |
993e62a7 |
36 | my %builtins = ( |
f5ee065f |
37 | Any => undef, # null check |
38 | Item => undef, # null check |
39 | Maybe => undef, # null check |
73766a27 |
40 | |
41 | Bool => sub { $_[0] ? $_[0] eq '1' : 1 }, |
c91d12e0 |
42 | Undef => sub { !defined($_[0]) }, |
43 | Defined => sub { defined($_[0]) }, |
44 | Value => sub { defined($_[0]) && !ref($_[0]) }, |
45 | Num => sub { !ref($_[0]) && looks_like_number($_[0]) }, |
46 | Int => sub { defined($_[0]) && !ref($_[0]) && $_[0] =~ /^-?[0-9]+$/ }, |
47 | Str => sub { defined($_[0]) && !ref($_[0]) }, |
c91d12e0 |
48 | Ref => sub { ref($_[0]) }, |
49 | |
50 | ScalarRef => sub { ref($_[0]) eq 'SCALAR' }, |
51 | ArrayRef => sub { ref($_[0]) eq 'ARRAY' }, |
52 | HashRef => sub { ref($_[0]) eq 'HASH' }, |
53 | CodeRef => sub { ref($_[0]) eq 'CODE' }, |
54 | RegexpRef => sub { ref($_[0]) eq 'Regexp' }, |
55 | GlobRef => sub { ref($_[0]) eq 'GLOB' }, |
381f326a |
56 | |
57 | FileHandle => sub { |
c91d12e0 |
58 | ref($_[0]) eq 'GLOB' && openhandle($_[0]) |
381f326a |
59 | or |
c91d12e0 |
60 | blessed($_[0]) && $_[0]->isa("IO::Handle") |
abe4e887 |
61 | }, |
381f326a |
62 | |
c91d12e0 |
63 | Object => sub { blessed($_[0]) && blessed($_[0]) ne 'Regexp' }, |
73766a27 |
64 | |
65 | ClassName => sub { Mouse::Util::is_class_loaded($_[0]) }, |
d4571def |
66 | RoleName => sub { (Mouse::Util::find_meta($_[0]) || return 0)->isa('Mouse::Meta::Role') }, |
8a7f2a8a |
67 | ); |
993e62a7 |
68 | |
69 | while (my ($name, $code) = each %builtins) { |
73766a27 |
70 | $TYPE{$name} = Mouse::Meta::TypeConstraint->new( |
3b89ea91 |
71 | name => $name, |
72 | optimized => $code, |
73766a27 |
73 | ); |
78b13827 |
74 | } |
d3982c7e |
75 | |
deb9a0f3 |
76 | sub optimized_constraints { # DEPRECATED |
f5ee065f |
77 | Carp::cluck('optimized_constraints() has been deprecated'); |
78 | return \%TYPE; |
79 | } |
d4571def |
80 | |
993e62a7 |
81 | my @builtins = keys %TYPE; |
82 | sub list_all_builtin_type_constraints { @builtins } |
83 | |
84 | sub list_all_type_constraints { keys %TYPE } |
381f326a |
85 | } |
d3982c7e |
86 | |
f5ee065f |
87 | sub _create_type{ |
88 | my $mode = shift; |
89 | |
73766a27 |
90 | my $name; |
f5ee065f |
91 | my %args; |
73766a27 |
92 | |
f5ee065f |
93 | if(@_ == 1 && ref $_[0]){ # @_ : { name => $name, where => ... } |
94 | %args = %{$_[0]}; |
73766a27 |
95 | } |
f5ee065f |
96 | elsif(@_ == 2 && ref $_[1]){ # @_ : $name => { where => ... } |
73766a27 |
97 | $name = $_[0]; |
f5ee065f |
98 | %args = %{$_[1]}; |
73766a27 |
99 | } |
f5ee065f |
100 | elsif(@_ % 2){ # @_ : $name => ( where => ... ) |
101 | ($name, %args) = @_; |
73766a27 |
102 | } |
f5ee065f |
103 | else{ # @_ : (name => $name, where => ...) |
104 | %args = @_; |
73766a27 |
105 | } |
106 | |
f5ee065f |
107 | if(!defined $name){ |
108 | if(!defined($name = $args{name})){ |
109 | $name = '__ANON__'; |
110 | } |
cd2b9201 |
111 | } |
d4571def |
112 | |
f5ee065f |
113 | $args{name} = $name; |
7dbebb1b |
114 | |
f5ee065f |
115 | my $package_defined_in = $args{package_defined_in} ||= caller(1); |
d4571def |
116 | |
f5ee065f |
117 | my $existing = $TYPE{$name}; |
118 | if($existing && $existing->{package_defined_in} ne $package_defined_in){ |
119 | confess("The type constraint '$name' has already been created in " |
120 | . "$existing->{package_defined_in} and cannot be created again in $package_defined_in"); |
121 | } |
d4571def |
122 | |
24410e3a |
123 | $args{constraint} = delete($args{where}) if exists $args{where}; |
124 | $args{optimized} = delete $args{optimized_as} if exists $args{optimized_as}; |
0d9fea22 |
125 | |
f5ee065f |
126 | my $constraint; |
127 | if($mode eq 'subtype'){ |
24410e3a |
128 | my $parent = delete($args{as}) |
129 | or confess('A subtype cannot consist solely of a name, it must have a parent'); |
7a50b450 |
130 | |
24410e3a |
131 | $constraint = find_or_create_isa_type_constraint($parent)->create_child_type(%args); |
7a50b450 |
132 | } |
133 | else{ |
f5ee065f |
134 | $constraint = Mouse::Meta::TypeConstraint->new(%args); |
73766a27 |
135 | } |
7dbebb1b |
136 | |
f5ee065f |
137 | return $TYPE{$name} = $constraint; |
138 | } |
7dbebb1b |
139 | |
f5ee065f |
140 | sub type { |
141 | return _create_type('type', @_); |
142 | } |
d4571def |
143 | |
f5ee065f |
144 | sub subtype { |
145 | return _create_type('subtype', @_); |
4188b837 |
146 | } |
147 | |
139d92d2 |
148 | sub coerce { |
ffbbf459 |
149 | my $type_name = shift; |
61a02a3a |
150 | |
ffbbf459 |
151 | my $type = find_type_constraint($type_name) |
152 | or confess("Cannot find type '$type_name', perhaps you forgot to load it."); |
61a02a3a |
153 | |
ffbbf459 |
154 | $type->_add_type_coercions(@_); |
cd2b9201 |
155 | return; |
4188b837 |
156 | } |
157 | |
139d92d2 |
158 | sub class_type { |
ecc6e3b1 |
159 | my($name, $conf) = @_; |
d9f8c878 |
160 | if ($conf && $conf->{class}) { |
161 | # No, you're using this wrong |
162 | warn "class_type() should be class_type(ClassName). Perhaps you're looking for subtype $name => as '$conf->{class}'?"; |
f5ee065f |
163 | _create_type 'type', $name => ( |
164 | as => $conf->{class}, |
165 | |
166 | type => 'Class', |
167 | ); |
a497c7d3 |
168 | } |
169 | else { |
f5ee065f |
170 | _create_type 'type', $name => ( |
171 | optimized_as => sub { blessed($_[0]) && $_[0]->isa($name) }, |
172 | |
173 | type => 'Class', |
d9f8c878 |
174 | ); |
175 | } |
ecc6e3b1 |
176 | } |
177 | |
139d92d2 |
178 | sub role_type { |
47f36c05 |
179 | my($name, $conf) = @_; |
f5ee065f |
180 | my $role = ($conf && $conf->{role}) ? $conf->{role} : $name; |
181 | _create_type 'type', $name => ( |
182 | optimized_as => sub { blessed($_[0]) && does_role($_[0], $role) }, |
183 | |
184 | type => 'Role', |
61a02a3a |
185 | ); |
47f36c05 |
186 | } |
187 | |
deb9a0f3 |
188 | sub typecast_constraints { # DEPRECATED |
ffbbf459 |
189 | my($class, $pkg, $type, $value) = @_; |
2efc0af1 |
190 | Carp::croak("wrong arguments count") unless @_ == 4; |
eec1bb49 |
191 | |
e763d56e |
192 | Carp::cluck("typecast_constraints() has been deprecated, which was an internal utility anyway"); |
193 | |
ffbbf459 |
194 | return $type->coerce($value); |
4188b837 |
195 | } |
196 | |
d44f0d03 |
197 | sub enum { |
f5ee065f |
198 | my($name, %valid); |
199 | |
01904723 |
200 | # enum ['small', 'medium', 'large'] |
201 | if (ref($_[0]) eq 'ARRAY') { |
f5ee065f |
202 | %valid = map{ $_ => undef } @{ $_[0] }; |
203 | $name = sprintf '(%s)', join '|', sort @{$_[0]}; |
204 | } |
205 | # enum size => 'small', 'medium', 'large' |
206 | else{ |
207 | $name = shift; |
208 | %valid = map{ $_ => undef } @_; |
209 | } |
210 | return _create_type 'type', $name => ( |
211 | optimized_as => sub{ defined($_[0]) && !ref($_[0]) && exists $valid{$_[0]} }, |
212 | |
213 | type => 'Enum', |
214 | ); |
215 | } |
216 | |
217 | sub _find_or_create_regular_type{ |
218 | my($spec) = @_; |
219 | |
220 | return $TYPE{$spec} if exists $TYPE{$spec}; |
01904723 |
221 | |
7727a2f0 |
222 | my $meta = Mouse::Util::get_metaclass_by_name($spec); |
f5ee065f |
223 | |
224 | if(!$meta){ |
225 | return; |
01904723 |
226 | } |
227 | |
f5ee065f |
228 | my $check; |
229 | my $type; |
57f0e313 |
230 | if($meta->isa('Mouse::Meta::Role')){ |
f5ee065f |
231 | $check = sub{ |
232 | return blessed($_[0]) && $_[0]->does($spec); |
233 | }; |
234 | $type = 'Role'; |
235 | } |
236 | else{ |
237 | $check = sub{ |
238 | return blessed($_[0]) && $_[0]->isa($spec); |
239 | }; |
240 | $type = 'Class'; |
241 | } |
242 | |
f5ee065f |
243 | return $TYPE{$spec} = Mouse::Meta::TypeConstraint->new( |
3b89ea91 |
244 | name => $spec, |
245 | optimized => $check, |
f5ee065f |
246 | |
3b89ea91 |
247 | type => $type, |
d44f0d03 |
248 | ); |
249 | } |
250 | |
f5ee065f |
251 | $TYPE{ArrayRef}{constraint_generator} = sub { |
252 | my($type_parameter) = @_; |
3b89ea91 |
253 | my $check = $type_parameter->_compiled_type_constraint; |
321e5271 |
254 | |
f5ee065f |
255 | return sub{ |
256 | foreach my $value (@{$_}) { |
257 | return undef unless $check->($value); |
258 | } |
259 | return 1; |
260 | } |
261 | }; |
262 | $TYPE{HashRef}{constraint_generator} = sub { |
263 | my($type_parameter) = @_; |
3b89ea91 |
264 | my $check = $type_parameter->_compiled_type_constraint; |
f5ee065f |
265 | |
266 | return sub{ |
267 | foreach my $value(values %{$_}){ |
268 | return undef unless $check->($value); |
269 | } |
270 | return 1; |
271 | }; |
272 | }; |
2efc0af1 |
273 | |
f5ee065f |
274 | # 'Maybe' type accepts 'Any', so it requires parameters |
275 | $TYPE{Maybe}{constraint_generator} = sub { |
276 | my($type_parameter) = @_; |
3b89ea91 |
277 | my $check = $type_parameter->_compiled_type_constraint; |
2efc0af1 |
278 | |
f5ee065f |
279 | return sub{ |
280 | return !defined($_) || $check->($_); |
281 | }; |
282 | }; |
283 | |
284 | sub _find_or_create_parameterized_type{ |
285 | my($base, $param) = @_; |
286 | |
287 | my $name = sprintf '%s[%s]', $base->name, $param->name; |
288 | |
289 | $TYPE{$name} ||= do{ |
f5ee065f |
290 | my $generator = $base->{constraint_generator}; |
291 | |
292 | if(!$generator){ |
293 | confess("The $name constraint cannot be used, because $param doesn't subtype from a parameterizable type"); |
2efc0af1 |
294 | } |
f5ee065f |
295 | |
296 | Mouse::Meta::TypeConstraint->new( |
297 | name => $name, |
298 | parent => $base, |
299 | constraint => $generator->($param), |
300 | |
301 | type => 'Parameterized', |
302 | ); |
303 | } |
304 | } |
305 | sub _find_or_create_union_type{ |
30b28db3 |
306 | my @types = sort{ $a cmp $b } map{ $_->{type_constraints} ? @{$_->{type_constraints}} : $_ } @_; |
f5ee065f |
307 | |
30b28db3 |
308 | my $name = join '|', @types; |
f5ee065f |
309 | |
310 | $TYPE{$name} ||= do{ |
f5ee065f |
311 | return Mouse::Meta::TypeConstraint->new( |
3b89ea91 |
312 | name => $name, |
313 | type_constraints => \@types, |
f5ee065f |
314 | |
3b89ea91 |
315 | type => 'Union', |
f5ee065f |
316 | ); |
317 | }; |
318 | } |
319 | |
320 | # The type parser |
321 | sub _parse_type{ |
322 | my($spec, $start) = @_; |
323 | |
324 | my @list; |
325 | my $subtype; |
326 | |
327 | my $len = length $spec; |
328 | my $i; |
329 | |
330 | for($i = $start; $i < $len; $i++){ |
331 | my $char = substr($spec, $i, 1); |
332 | |
333 | if($char eq '['){ |
57f0e313 |
334 | my $base = _find_or_create_regular_type( substr($spec, $start, $i - $start) ) |
f5ee065f |
335 | or return; |
336 | |
337 | ($i, $subtype) = _parse_type($spec, $i+1) |
338 | or return; |
339 | $start = $i+1; # reset |
340 | |
341 | push @list, _find_or_create_parameterized_type($base => $subtype); |
321e5271 |
342 | } |
f5ee065f |
343 | elsif($char eq ']'){ |
344 | $len = $i+1; |
345 | last; |
321e5271 |
346 | } |
f5ee065f |
347 | elsif($char eq '|'){ |
57f0e313 |
348 | my $type = _find_or_create_regular_type( substr($spec, $start, $i - $start) ); |
349 | |
57f0e313 |
350 | if(!defined $type){ |
3b89ea91 |
351 | # XXX: Mouse creates a new class type, but Moose does not. |
352 | $type = class_type( substr($spec, $start, $i - $start) ); |
57f0e313 |
353 | } |
f5ee065f |
354 | |
355 | push @list, $type; |
356 | |
357 | ($i, $subtype) = _parse_type($spec, $i+1) |
358 | or return; |
359 | |
360 | $start = $i+1; # reset |
361 | |
362 | push @list, $subtype; |
321e5271 |
363 | } |
364 | } |
f5ee065f |
365 | if($i - $start){ |
366 | push @list, _find_or_create_regular_type(substr $spec, $start, $i - $start); |
367 | } |
321e5271 |
368 | |
f5ee065f |
369 | if(@list == 0){ |
370 | return; |
371 | } |
372 | elsif(@list == 1){ |
373 | return ($len, $list[0]); |
993e62a7 |
374 | } |
375 | else{ |
f5ee065f |
376 | return ($len, _find_or_create_union_type(@list)); |
993e62a7 |
377 | } |
321e5271 |
378 | } |
379 | |
f5ee065f |
380 | |
381 | sub find_type_constraint { |
382 | my($spec) = @_; |
e98220ab |
383 | return $spec if blessed($spec) && $spec->isa('Mouse::Meta::TypeConstraint'); |
f5ee065f |
384 | |
385 | $spec =~ s/\s+//g; |
386 | return $TYPE{$spec}; |
2efc0af1 |
387 | } |
388 | |
f5ee065f |
389 | sub find_or_parse_type_constraint { |
390 | my($spec) = @_; |
e98220ab |
391 | return $spec if blessed($spec) && $spec->isa('Mouse::Meta::TypeConstraint'); |
9c85e9dc |
392 | |
f5ee065f |
393 | $spec =~ s/\s+//g; |
394 | return $TYPE{$spec} || do{ |
395 | my($pos, $type) = _parse_type($spec, 0); |
396 | $type; |
397 | }; |
398 | } |
321e5271 |
399 | |
f5ee065f |
400 | sub find_or_create_does_type_constraint{ |
9f74c401 |
401 | my $type = find_or_parse_type_constraint(@_) || role_type(@_); |
94593ae8 |
402 | |
f5ee065f |
403 | if($type->{type} && $type->{type} ne 'Role'){ |
404 | Carp::cluck("$type is not a role type"); |
321e5271 |
405 | } |
f5ee065f |
406 | return $type; |
407 | } |
408 | |
409 | sub find_or_create_isa_type_constraint { |
410 | return find_or_parse_type_constraint(@_) || class_type(@_); |
321e5271 |
411 | } |
412 | |
d60c78b9 |
413 | 1; |
414 | |
6feb83f1 |
415 | __END__ |
416 | |
417 | =head1 NAME |
418 | |
5893ee36 |
419 | Mouse::Util::TypeConstraints - Type constraint system for Mouse |
420 | |
421 | =head2 SYNOPSIS |
422 | |
423 | use Mouse::Util::TypeConstraints; |
424 | |
425 | subtype 'Natural' |
426 | => as 'Int' |
427 | => where { $_ > 0 }; |
428 | |
429 | subtype 'NaturalLessThanTen' |
430 | => as 'Natural' |
431 | => where { $_ < 10 } |
432 | => message { "This number ($_) is not less than ten!" }; |
433 | |
434 | coerce 'Num' |
435 | => from 'Str' |
436 | => via { 0+$_ }; |
437 | |
438 | enum 'RGBColors' => qw(red green blue); |
439 | |
440 | no Mouse::Util::TypeConstraints; |
441 | |
442 | =head1 DESCRIPTION |
443 | |
444 | This module provides Mouse with the ability to create custom type |
445 | constraints to be used in attribute definition. |
446 | |
447 | =head2 Important Caveat |
448 | |
449 | This is B<NOT> a type system for Perl 5. These are type constraints, |
450 | and they are not used by Mouse unless you tell it to. No type |
451 | inference is performed, expressions are not typed, etc. etc. etc. |
452 | |
453 | A type constraint is at heart a small "check if a value is valid" |
454 | function. A constraint can be associated with an attribute. This |
455 | simplifies parameter validation, and makes your code clearer to read, |
456 | because you can refer to constraints by name. |
457 | |
458 | =head2 Slightly Less Important Caveat |
459 | |
460 | It is B<always> a good idea to quote your type names. |
461 | |
462 | This prevents Perl from trying to execute the call as an indirect |
463 | object call. This can be an issue when you have a subtype with the |
464 | same name as a valid class. |
465 | |
466 | For instance: |
467 | |
468 | subtype DateTime => as Object => where { $_->isa('DateTime') }; |
469 | |
470 | will I<just work>, while this: |
471 | |
472 | use DateTime; |
473 | subtype DateTime => as Object => where { $_->isa('DateTime') }; |
474 | |
475 | will fail silently and cause many headaches. The simple way to solve |
476 | this, as well as future proof your subtypes from classes which have |
477 | yet to have been created, is to quote the type name: |
478 | |
479 | use DateTime; |
480 | subtype 'DateTime' => as 'Object' => where { $_->isa('DateTime') }; |
481 | |
482 | =head2 Default Type Constraints |
483 | |
484 | This module also provides a simple hierarchy for Perl 5 types, here is |
485 | that hierarchy represented visually. |
486 | |
487 | Any |
488 | Item |
489 | Bool |
490 | Maybe[`a] |
491 | Undef |
492 | Defined |
493 | Value |
494 | Num |
495 | Int |
496 | Str |
497 | ClassName |
498 | RoleName |
499 | Ref |
500 | ScalarRef |
501 | ArrayRef[`a] |
502 | HashRef[`a] |
503 | CodeRef |
504 | RegexpRef |
505 | GlobRef |
506 | FileHandle |
507 | Object |
5893ee36 |
508 | |
509 | B<NOTE:> Any type followed by a type parameter C<[`a]> can be |
510 | parameterized, this means you can say: |
511 | |
512 | ArrayRef[Int] # an array of integers |
513 | HashRef[CodeRef] # a hash of str to CODE ref mappings |
514 | Maybe[Str] # value may be a string, may be undefined |
515 | |
516 | If Mouse finds a name in brackets that it does not recognize as an |
517 | existing type, it assumes that this is a class name, for example |
518 | C<ArrayRef[DateTime]>. |
519 | |
520 | B<NOTE:> Unless you parameterize a type, then it is invalid to include |
521 | the square brackets. I.e. C<ArrayRef[]> will be treated as a new type |
522 | name, I<not> as a parameterization of C<ArrayRef>. |
523 | |
524 | B<NOTE:> The C<Undef> type constraint for the most part works |
525 | correctly now, but edge cases may still exist, please use it |
526 | sparingly. |
527 | |
528 | B<NOTE:> The C<ClassName> type constraint does a complex package |
529 | existence check. This means that your class B<must> be loaded for this |
530 | type constraint to pass. |
531 | |
532 | B<NOTE:> The C<RoleName> constraint checks a string is a I<package |
533 | name> which is a role, like C<'MyApp::Role::Comparable'>. The C<Role> |
534 | constraint checks that an I<object does> the named role. |
535 | |
536 | =head2 Type Constraint Naming |
537 | |
538 | Type name declared via this module can only contain alphanumeric |
539 | characters, colons (:), and periods (.). |
540 | |
541 | Since the types created by this module are global, it is suggested |
542 | that you namespace your types just as you would namespace your |
543 | modules. So instead of creating a I<Color> type for your |
544 | B<My::Graphics> module, you would call the type |
545 | I<My::Graphics::Types::Color> instead. |
546 | |
547 | =head2 Use with Other Constraint Modules |
548 | |
549 | This module can play nicely with other constraint modules with some |
550 | slight tweaking. The C<where> clause in types is expected to be a |
551 | C<CODE> reference which checks it's first argument and returns a |
552 | boolean. Since most constraint modules work in a similar way, it |
553 | should be simple to adapt them to work with Mouse. |
554 | |
555 | For instance, this is how you could use it with |
556 | L<Declare::Constraints::Simple> to declare a completely new type. |
557 | |
558 | type 'HashOfArrayOfObjects', |
559 | { |
560 | where => IsHashRef( |
561 | -keys => HasLength, |
562 | -values => IsArrayRef(IsObject) |
563 | ) |
564 | }; |
565 | |
566 | Here is an example of using L<Test::Deep> and it's non-test |
567 | related C<eq_deeply> function. |
568 | |
569 | type 'ArrayOfHashOfBarsAndRandomNumbers' |
570 | => where { |
571 | eq_deeply($_, |
572 | array_each(subhashof({ |
573 | bar => isa('Bar'), |
574 | random_number => ignore() |
575 | }))) |
576 | }; |
6feb83f1 |
577 | |
578 | =head1 METHODS |
579 | |
24410e3a |
580 | =head2 C<< list_all_builtin_type_constraints -> (Names) >> |
6feb83f1 |
581 | |
24410e3a |
582 | Returns the names of builtin type constraints. |
583 | |
584 | =head2 C<< list_all_type_constraints -> (Names) >> |
585 | |
586 | Returns the names of all the type constraints. |
6feb83f1 |
587 | |
c91d12e0 |
588 | =head1 FUNCTIONS |
589 | |
590 | =over 4 |
591 | |
1820fffe |
592 | =item C<< subtype 'Name' => as 'Parent' => where { } ... -> Mouse::Meta::TypeConstraint >> |
c91d12e0 |
593 | |
1820fffe |
594 | =item C<< subtype as 'Parent' => where { } ... -> Mouse::Meta::TypeConstraint >> |
c91d12e0 |
595 | |
1820fffe |
596 | =item C<< class_type ($class, ?$options) -> Mouse::Meta::TypeConstraint >> |
c91d12e0 |
597 | |
1820fffe |
598 | =item C<< role_type ($role, ?$options) -> Mouse::Meta::TypeConstraint >> |
c91d12e0 |
599 | |
1820fffe |
600 | =item C<< enum (\@values) -> Mouse::Meta::TypeConstraint >> |
601 | |
602 | =back |
603 | |
604 | =over 4 |
605 | |
606 | =item C<< find_type_constraint(Type) -> Mouse::Meta::TypeConstraint >> |
c91d12e0 |
607 | |
608 | =back |
609 | |
5893ee36 |
610 | =head1 THANKS |
611 | |
1820fffe |
612 | Much of this documentation was taken from C<Moose::Util::TypeConstraints> |
613 | |
614 | =head1 SEE ALSO |
615 | |
616 | L<Moose::Util::TypeConstraints> |
5893ee36 |
617 | |
6feb83f1 |
618 | =cut |
619 | |
620 | |