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; |
b8434acc |
114 | my $parent; |
115 | if($mode eq 'subtype'){ |
116 | $parent = delete $args{as}; |
117 | if(!$parent){ |
118 | $parent = delete $args{name}; |
119 | $name = '__ANON__'; |
120 | } |
121 | } |
7dbebb1b |
122 | |
f5ee065f |
123 | my $package_defined_in = $args{package_defined_in} ||= caller(1); |
d4571def |
124 | |
f5ee065f |
125 | my $existing = $TYPE{$name}; |
126 | if($existing && $existing->{package_defined_in} ne $package_defined_in){ |
127 | confess("The type constraint '$name' has already been created in " |
128 | . "$existing->{package_defined_in} and cannot be created again in $package_defined_in"); |
129 | } |
d4571def |
130 | |
b8434acc |
131 | $args{constraint} = delete $args{where} if exists $args{where}; |
24410e3a |
132 | $args{optimized} = delete $args{optimized_as} if exists $args{optimized_as}; |
0d9fea22 |
133 | |
f5ee065f |
134 | my $constraint; |
135 | if($mode eq 'subtype'){ |
24410e3a |
136 | $constraint = find_or_create_isa_type_constraint($parent)->create_child_type(%args); |
7a50b450 |
137 | } |
138 | else{ |
f5ee065f |
139 | $constraint = Mouse::Meta::TypeConstraint->new(%args); |
73766a27 |
140 | } |
7dbebb1b |
141 | |
f5ee065f |
142 | return $TYPE{$name} = $constraint; |
143 | } |
7dbebb1b |
144 | |
f5ee065f |
145 | sub type { |
146 | return _create_type('type', @_); |
147 | } |
d4571def |
148 | |
f5ee065f |
149 | sub subtype { |
150 | return _create_type('subtype', @_); |
4188b837 |
151 | } |
152 | |
139d92d2 |
153 | sub coerce { |
ffbbf459 |
154 | my $type_name = shift; |
61a02a3a |
155 | |
ffbbf459 |
156 | my $type = find_type_constraint($type_name) |
157 | or confess("Cannot find type '$type_name', perhaps you forgot to load it."); |
61a02a3a |
158 | |
ffbbf459 |
159 | $type->_add_type_coercions(@_); |
cd2b9201 |
160 | return; |
4188b837 |
161 | } |
162 | |
139d92d2 |
163 | sub class_type { |
ecc6e3b1 |
164 | my($name, $conf) = @_; |
d9f8c878 |
165 | if ($conf && $conf->{class}) { |
166 | # No, you're using this wrong |
167 | warn "class_type() should be class_type(ClassName). Perhaps you're looking for subtype $name => as '$conf->{class}'?"; |
f5ee065f |
168 | _create_type 'type', $name => ( |
169 | as => $conf->{class}, |
170 | |
171 | type => 'Class', |
172 | ); |
a497c7d3 |
173 | } |
174 | else { |
f5ee065f |
175 | _create_type 'type', $name => ( |
176 | optimized_as => sub { blessed($_[0]) && $_[0]->isa($name) }, |
177 | |
178 | type => 'Class', |
d9f8c878 |
179 | ); |
180 | } |
ecc6e3b1 |
181 | } |
182 | |
139d92d2 |
183 | sub role_type { |
47f36c05 |
184 | my($name, $conf) = @_; |
f5ee065f |
185 | my $role = ($conf && $conf->{role}) ? $conf->{role} : $name; |
186 | _create_type 'type', $name => ( |
187 | optimized_as => sub { blessed($_[0]) && does_role($_[0], $role) }, |
188 | |
189 | type => 'Role', |
61a02a3a |
190 | ); |
47f36c05 |
191 | } |
192 | |
deb9a0f3 |
193 | sub typecast_constraints { # DEPRECATED |
ffbbf459 |
194 | my($class, $pkg, $type, $value) = @_; |
2efc0af1 |
195 | Carp::croak("wrong arguments count") unless @_ == 4; |
eec1bb49 |
196 | |
e763d56e |
197 | Carp::cluck("typecast_constraints() has been deprecated, which was an internal utility anyway"); |
198 | |
ffbbf459 |
199 | return $type->coerce($value); |
4188b837 |
200 | } |
201 | |
d44f0d03 |
202 | sub enum { |
f5ee065f |
203 | my($name, %valid); |
204 | |
01904723 |
205 | # enum ['small', 'medium', 'large'] |
206 | if (ref($_[0]) eq 'ARRAY') { |
f5ee065f |
207 | %valid = map{ $_ => undef } @{ $_[0] }; |
208 | $name = sprintf '(%s)', join '|', sort @{$_[0]}; |
209 | } |
210 | # enum size => 'small', 'medium', 'large' |
211 | else{ |
212 | $name = shift; |
213 | %valid = map{ $_ => undef } @_; |
214 | } |
215 | return _create_type 'type', $name => ( |
216 | optimized_as => sub{ defined($_[0]) && !ref($_[0]) && exists $valid{$_[0]} }, |
217 | |
218 | type => 'Enum', |
219 | ); |
220 | } |
221 | |
222 | sub _find_or_create_regular_type{ |
223 | my($spec) = @_; |
224 | |
225 | return $TYPE{$spec} if exists $TYPE{$spec}; |
01904723 |
226 | |
7727a2f0 |
227 | my $meta = Mouse::Util::get_metaclass_by_name($spec); |
f5ee065f |
228 | |
229 | if(!$meta){ |
230 | return; |
01904723 |
231 | } |
232 | |
f5ee065f |
233 | my $check; |
234 | my $type; |
57f0e313 |
235 | if($meta->isa('Mouse::Meta::Role')){ |
f5ee065f |
236 | $check = sub{ |
237 | return blessed($_[0]) && $_[0]->does($spec); |
238 | }; |
239 | $type = 'Role'; |
240 | } |
241 | else{ |
242 | $check = sub{ |
243 | return blessed($_[0]) && $_[0]->isa($spec); |
244 | }; |
245 | $type = 'Class'; |
246 | } |
247 | |
f5ee065f |
248 | return $TYPE{$spec} = Mouse::Meta::TypeConstraint->new( |
3b89ea91 |
249 | name => $spec, |
250 | optimized => $check, |
f5ee065f |
251 | |
3b89ea91 |
252 | type => $type, |
d44f0d03 |
253 | ); |
254 | } |
255 | |
f5ee065f |
256 | $TYPE{ArrayRef}{constraint_generator} = sub { |
257 | my($type_parameter) = @_; |
3b89ea91 |
258 | my $check = $type_parameter->_compiled_type_constraint; |
321e5271 |
259 | |
f5ee065f |
260 | return sub{ |
261 | foreach my $value (@{$_}) { |
262 | return undef unless $check->($value); |
263 | } |
264 | return 1; |
265 | } |
266 | }; |
267 | $TYPE{HashRef}{constraint_generator} = sub { |
268 | my($type_parameter) = @_; |
3b89ea91 |
269 | my $check = $type_parameter->_compiled_type_constraint; |
f5ee065f |
270 | |
271 | return sub{ |
272 | foreach my $value(values %{$_}){ |
273 | return undef unless $check->($value); |
274 | } |
275 | return 1; |
276 | }; |
277 | }; |
2efc0af1 |
278 | |
f5ee065f |
279 | # 'Maybe' type accepts 'Any', so it requires parameters |
280 | $TYPE{Maybe}{constraint_generator} = sub { |
281 | my($type_parameter) = @_; |
3b89ea91 |
282 | my $check = $type_parameter->_compiled_type_constraint; |
2efc0af1 |
283 | |
f5ee065f |
284 | return sub{ |
285 | return !defined($_) || $check->($_); |
286 | }; |
287 | }; |
288 | |
289 | sub _find_or_create_parameterized_type{ |
290 | my($base, $param) = @_; |
291 | |
292 | my $name = sprintf '%s[%s]', $base->name, $param->name; |
293 | |
294 | $TYPE{$name} ||= do{ |
f5ee065f |
295 | my $generator = $base->{constraint_generator}; |
296 | |
297 | if(!$generator){ |
298 | confess("The $name constraint cannot be used, because $param doesn't subtype from a parameterizable type"); |
2efc0af1 |
299 | } |
f5ee065f |
300 | |
301 | Mouse::Meta::TypeConstraint->new( |
302 | name => $name, |
303 | parent => $base, |
304 | constraint => $generator->($param), |
305 | |
306 | type => 'Parameterized', |
307 | ); |
308 | } |
309 | } |
310 | sub _find_or_create_union_type{ |
30b28db3 |
311 | my @types = sort{ $a cmp $b } map{ $_->{type_constraints} ? @{$_->{type_constraints}} : $_ } @_; |
f5ee065f |
312 | |
30b28db3 |
313 | my $name = join '|', @types; |
f5ee065f |
314 | |
315 | $TYPE{$name} ||= do{ |
f5ee065f |
316 | return Mouse::Meta::TypeConstraint->new( |
3b89ea91 |
317 | name => $name, |
318 | type_constraints => \@types, |
f5ee065f |
319 | |
3b89ea91 |
320 | type => 'Union', |
f5ee065f |
321 | ); |
322 | }; |
323 | } |
324 | |
325 | # The type parser |
326 | sub _parse_type{ |
327 | my($spec, $start) = @_; |
328 | |
329 | my @list; |
330 | my $subtype; |
331 | |
332 | my $len = length $spec; |
333 | my $i; |
334 | |
335 | for($i = $start; $i < $len; $i++){ |
336 | my $char = substr($spec, $i, 1); |
337 | |
338 | if($char eq '['){ |
57f0e313 |
339 | my $base = _find_or_create_regular_type( substr($spec, $start, $i - $start) ) |
f5ee065f |
340 | or return; |
341 | |
342 | ($i, $subtype) = _parse_type($spec, $i+1) |
343 | or return; |
344 | $start = $i+1; # reset |
345 | |
346 | push @list, _find_or_create_parameterized_type($base => $subtype); |
321e5271 |
347 | } |
f5ee065f |
348 | elsif($char eq ']'){ |
349 | $len = $i+1; |
350 | last; |
321e5271 |
351 | } |
f5ee065f |
352 | elsif($char eq '|'){ |
57f0e313 |
353 | my $type = _find_or_create_regular_type( substr($spec, $start, $i - $start) ); |
354 | |
57f0e313 |
355 | if(!defined $type){ |
3b89ea91 |
356 | # XXX: Mouse creates a new class type, but Moose does not. |
357 | $type = class_type( substr($spec, $start, $i - $start) ); |
57f0e313 |
358 | } |
f5ee065f |
359 | |
360 | push @list, $type; |
361 | |
362 | ($i, $subtype) = _parse_type($spec, $i+1) |
363 | or return; |
364 | |
365 | $start = $i+1; # reset |
366 | |
367 | push @list, $subtype; |
321e5271 |
368 | } |
369 | } |
f5ee065f |
370 | if($i - $start){ |
371 | push @list, _find_or_create_regular_type(substr $spec, $start, $i - $start); |
372 | } |
321e5271 |
373 | |
f5ee065f |
374 | if(@list == 0){ |
375 | return; |
376 | } |
377 | elsif(@list == 1){ |
378 | return ($len, $list[0]); |
993e62a7 |
379 | } |
380 | else{ |
f5ee065f |
381 | return ($len, _find_or_create_union_type(@list)); |
993e62a7 |
382 | } |
321e5271 |
383 | } |
384 | |
f5ee065f |
385 | |
386 | sub find_type_constraint { |
387 | my($spec) = @_; |
e98220ab |
388 | return $spec if blessed($spec) && $spec->isa('Mouse::Meta::TypeConstraint'); |
f5ee065f |
389 | |
390 | $spec =~ s/\s+//g; |
391 | return $TYPE{$spec}; |
2efc0af1 |
392 | } |
393 | |
f5ee065f |
394 | sub find_or_parse_type_constraint { |
395 | my($spec) = @_; |
e98220ab |
396 | return $spec if blessed($spec) && $spec->isa('Mouse::Meta::TypeConstraint'); |
9c85e9dc |
397 | |
f5ee065f |
398 | $spec =~ s/\s+//g; |
399 | return $TYPE{$spec} || do{ |
400 | my($pos, $type) = _parse_type($spec, 0); |
401 | $type; |
402 | }; |
403 | } |
321e5271 |
404 | |
f5ee065f |
405 | sub find_or_create_does_type_constraint{ |
9f74c401 |
406 | my $type = find_or_parse_type_constraint(@_) || role_type(@_); |
94593ae8 |
407 | |
f5ee065f |
408 | if($type->{type} && $type->{type} ne 'Role'){ |
409 | Carp::cluck("$type is not a role type"); |
321e5271 |
410 | } |
f5ee065f |
411 | return $type; |
412 | } |
413 | |
414 | sub find_or_create_isa_type_constraint { |
415 | return find_or_parse_type_constraint(@_) || class_type(@_); |
321e5271 |
416 | } |
417 | |
d60c78b9 |
418 | 1; |
419 | |
6feb83f1 |
420 | __END__ |
421 | |
422 | =head1 NAME |
423 | |
5893ee36 |
424 | Mouse::Util::TypeConstraints - Type constraint system for Mouse |
425 | |
426 | =head2 SYNOPSIS |
427 | |
428 | use Mouse::Util::TypeConstraints; |
429 | |
430 | subtype 'Natural' |
431 | => as 'Int' |
432 | => where { $_ > 0 }; |
433 | |
434 | subtype 'NaturalLessThanTen' |
435 | => as 'Natural' |
436 | => where { $_ < 10 } |
437 | => message { "This number ($_) is not less than ten!" }; |
438 | |
439 | coerce 'Num' |
440 | => from 'Str' |
441 | => via { 0+$_ }; |
442 | |
443 | enum 'RGBColors' => qw(red green blue); |
444 | |
445 | no Mouse::Util::TypeConstraints; |
446 | |
447 | =head1 DESCRIPTION |
448 | |
449 | This module provides Mouse with the ability to create custom type |
450 | constraints to be used in attribute definition. |
451 | |
452 | =head2 Important Caveat |
453 | |
454 | This is B<NOT> a type system for Perl 5. These are type constraints, |
455 | and they are not used by Mouse unless you tell it to. No type |
456 | inference is performed, expressions are not typed, etc. etc. etc. |
457 | |
458 | A type constraint is at heart a small "check if a value is valid" |
459 | function. A constraint can be associated with an attribute. This |
460 | simplifies parameter validation, and makes your code clearer to read, |
461 | because you can refer to constraints by name. |
462 | |
463 | =head2 Slightly Less Important Caveat |
464 | |
465 | It is B<always> a good idea to quote your type names. |
466 | |
467 | This prevents Perl from trying to execute the call as an indirect |
468 | object call. This can be an issue when you have a subtype with the |
469 | same name as a valid class. |
470 | |
471 | For instance: |
472 | |
473 | subtype DateTime => as Object => where { $_->isa('DateTime') }; |
474 | |
475 | will I<just work>, while this: |
476 | |
477 | use DateTime; |
478 | subtype DateTime => as Object => where { $_->isa('DateTime') }; |
479 | |
480 | will fail silently and cause many headaches. The simple way to solve |
481 | this, as well as future proof your subtypes from classes which have |
482 | yet to have been created, is to quote the type name: |
483 | |
484 | use DateTime; |
485 | subtype 'DateTime' => as 'Object' => where { $_->isa('DateTime') }; |
486 | |
487 | =head2 Default Type Constraints |
488 | |
489 | This module also provides a simple hierarchy for Perl 5 types, here is |
490 | that hierarchy represented visually. |
491 | |
492 | Any |
493 | Item |
494 | Bool |
495 | Maybe[`a] |
496 | Undef |
497 | Defined |
498 | Value |
499 | Num |
500 | Int |
501 | Str |
502 | ClassName |
503 | RoleName |
504 | Ref |
505 | ScalarRef |
506 | ArrayRef[`a] |
507 | HashRef[`a] |
508 | CodeRef |
509 | RegexpRef |
510 | GlobRef |
511 | FileHandle |
512 | Object |
5893ee36 |
513 | |
514 | B<NOTE:> Any type followed by a type parameter C<[`a]> can be |
515 | parameterized, this means you can say: |
516 | |
517 | ArrayRef[Int] # an array of integers |
518 | HashRef[CodeRef] # a hash of str to CODE ref mappings |
519 | Maybe[Str] # value may be a string, may be undefined |
520 | |
521 | If Mouse finds a name in brackets that it does not recognize as an |
522 | existing type, it assumes that this is a class name, for example |
523 | C<ArrayRef[DateTime]>. |
524 | |
525 | B<NOTE:> Unless you parameterize a type, then it is invalid to include |
526 | the square brackets. I.e. C<ArrayRef[]> will be treated as a new type |
527 | name, I<not> as a parameterization of C<ArrayRef>. |
528 | |
529 | B<NOTE:> The C<Undef> type constraint for the most part works |
530 | correctly now, but edge cases may still exist, please use it |
531 | sparingly. |
532 | |
533 | B<NOTE:> The C<ClassName> type constraint does a complex package |
534 | existence check. This means that your class B<must> be loaded for this |
535 | type constraint to pass. |
536 | |
537 | B<NOTE:> The C<RoleName> constraint checks a string is a I<package |
538 | name> which is a role, like C<'MyApp::Role::Comparable'>. The C<Role> |
539 | constraint checks that an I<object does> the named role. |
540 | |
541 | =head2 Type Constraint Naming |
542 | |
543 | Type name declared via this module can only contain alphanumeric |
544 | characters, colons (:), and periods (.). |
545 | |
546 | Since the types created by this module are global, it is suggested |
547 | that you namespace your types just as you would namespace your |
548 | modules. So instead of creating a I<Color> type for your |
549 | B<My::Graphics> module, you would call the type |
550 | I<My::Graphics::Types::Color> instead. |
551 | |
552 | =head2 Use with Other Constraint Modules |
553 | |
554 | This module can play nicely with other constraint modules with some |
555 | slight tweaking. The C<where> clause in types is expected to be a |
556 | C<CODE> reference which checks it's first argument and returns a |
557 | boolean. Since most constraint modules work in a similar way, it |
558 | should be simple to adapt them to work with Mouse. |
559 | |
560 | For instance, this is how you could use it with |
561 | L<Declare::Constraints::Simple> to declare a completely new type. |
562 | |
563 | type 'HashOfArrayOfObjects', |
564 | { |
565 | where => IsHashRef( |
566 | -keys => HasLength, |
567 | -values => IsArrayRef(IsObject) |
568 | ) |
569 | }; |
570 | |
571 | Here is an example of using L<Test::Deep> and it's non-test |
572 | related C<eq_deeply> function. |
573 | |
574 | type 'ArrayOfHashOfBarsAndRandomNumbers' |
575 | => where { |
576 | eq_deeply($_, |
577 | array_each(subhashof({ |
578 | bar => isa('Bar'), |
579 | random_number => ignore() |
580 | }))) |
581 | }; |
6feb83f1 |
582 | |
583 | =head1 METHODS |
584 | |
24410e3a |
585 | =head2 C<< list_all_builtin_type_constraints -> (Names) >> |
6feb83f1 |
586 | |
24410e3a |
587 | Returns the names of builtin type constraints. |
588 | |
589 | =head2 C<< list_all_type_constraints -> (Names) >> |
590 | |
591 | Returns the names of all the type constraints. |
6feb83f1 |
592 | |
c91d12e0 |
593 | =head1 FUNCTIONS |
594 | |
595 | =over 4 |
596 | |
1820fffe |
597 | =item C<< subtype 'Name' => as 'Parent' => where { } ... -> Mouse::Meta::TypeConstraint >> |
c91d12e0 |
598 | |
1820fffe |
599 | =item C<< subtype as 'Parent' => where { } ... -> Mouse::Meta::TypeConstraint >> |
c91d12e0 |
600 | |
1820fffe |
601 | =item C<< class_type ($class, ?$options) -> Mouse::Meta::TypeConstraint >> |
c91d12e0 |
602 | |
1820fffe |
603 | =item C<< role_type ($role, ?$options) -> Mouse::Meta::TypeConstraint >> |
c91d12e0 |
604 | |
1820fffe |
605 | =item C<< enum (\@values) -> Mouse::Meta::TypeConstraint >> |
606 | |
607 | =back |
608 | |
609 | =over 4 |
610 | |
611 | =item C<< find_type_constraint(Type) -> Mouse::Meta::TypeConstraint >> |
c91d12e0 |
612 | |
613 | =back |
614 | |
5893ee36 |
615 | =head1 THANKS |
616 | |
1820fffe |
617 | Much of this documentation was taken from C<Moose::Util::TypeConstraints> |
618 | |
619 | =head1 SEE ALSO |
620 | |
621 | L<Moose::Util::TypeConstraints> |
5893ee36 |
622 | |
6feb83f1 |
623 | =cut |
624 | |
625 | |