Commit | Line | Data |
3b46bd49 |
1 | package Mouse::Util::TypeConstraints; |
d60c78b9 |
2 | use strict; |
3 | use warnings; |
139d92d2 |
4 | use base 'Exporter'; |
9baf5d6b |
5 | |
61a02a3a |
6 | use Carp (); |
6c169c50 |
7 | use Scalar::Util qw/blessed looks_like_number openhandle/; |
6d28c5cf |
8 | |
9 | use Mouse::Util; |
684db121 |
10 | use Mouse::Meta::TypeConstraint; |
d60c78b9 |
11 | |
139d92d2 |
12 | our @EXPORT = qw( |
d44f0d03 |
13 | as where message from via type subtype coerce class_type role_type enum |
ccf44227 |
14 | find_type_constraint |
139d92d2 |
15 | ); |
16 | |
cceb0e25 |
17 | my %TYPE; |
7dbebb1b |
18 | my %TYPE_SOURCE; |
8a7f2a8a |
19 | my %COERCE; |
20 | my %COERCE_KEYS; |
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 { |
381f326a |
36 | no warnings 'uninitialized'; |
cceb0e25 |
37 | %TYPE = ( |
381f326a |
38 | Any => sub { 1 }, |
39 | Item => sub { 1 }, |
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]) }, |
66 | RoleName => sub { (Mouse::Util::class_of($_[0]) || return 0)->isa('Mouse::Meta::Role') }, |
8a7f2a8a |
67 | ); |
684db121 |
68 | while (my ($name, $code) = each %TYPE) { |
73766a27 |
69 | $TYPE{$name} = Mouse::Meta::TypeConstraint->new( |
70 | name => $name, |
71 | _compiled_type_constraint => $code, |
72 | ); |
78b13827 |
73 | } |
d3982c7e |
74 | |
cceb0e25 |
75 | sub optimized_constraints { \%TYPE } |
76 | my @TYPE_KEYS = keys %TYPE; |
77 | sub list_all_builtin_type_constraints { @TYPE_KEYS } |
7dbebb1b |
78 | |
79 | @TYPE_SOURCE{@TYPE_KEYS} = (__PACKAGE__) x @TYPE_KEYS; |
381f326a |
80 | } |
d3982c7e |
81 | |
139d92d2 |
82 | sub type { |
73766a27 |
83 | my $name; |
84 | my %conf; |
85 | |
86 | if(@_ == 1 && ref $_[0]){ # type { where => ... } |
87 | %conf = %{$_[0]}; |
88 | } |
89 | elsif(@_ == 2 && ref $_[1]){ # type $name => { where => ... }* |
90 | $name = $_[0]; |
91 | %conf = %{$_[1]}; |
92 | } |
93 | elsif(@_ % 2){ # odd number of arguments |
94 | $name = shift; |
95 | %conf = @_; |
96 | } |
97 | else{ |
98 | %conf = @_; |
99 | } |
100 | |
101 | $name = '__ANON__' if !defined $name; |
102 | |
103 | my $pkg = caller; |
cd2b9201 |
104 | |
0d062abb |
105 | if ($TYPE{$name} && $TYPE_SOURCE{$name} ne $pkg) { |
7dbebb1b |
106 | Carp::croak "The type constraint '$name' has already been created in $TYPE_SOURCE{$name} and cannot be created again in $pkg"; |
cd2b9201 |
107 | } |
321e5271 |
108 | my $constraint = $conf{where} || do { |
109 | my $as = delete $conf{as} || 'Any'; |
110 | if (! exists $TYPE{$as}) { |
111 | $TYPE{$as} = _build_type_constraint($as); |
112 | } |
113 | $TYPE{$as}; |
114 | }; |
7dbebb1b |
115 | |
116 | $TYPE_SOURCE{$name} = $pkg; |
684db121 |
117 | $TYPE{$name} = Mouse::Meta::TypeConstraint->new( |
118 | name => $name, |
119 | _compiled_type_constraint => sub { |
120 | local $_ = $_[0]; |
121 | if (ref $constraint eq 'CODE') { |
122 | $constraint->($_[0]) |
123 | } else { |
124 | $constraint->check($_[0]) |
125 | } |
126 | } |
127 | ); |
0d9fea22 |
128 | } |
129 | |
139d92d2 |
130 | sub subtype { |
7a50b450 |
131 | my $name; |
132 | my %conf; |
133 | |
73766a27 |
134 | if(@_ == 1 && ref $_[0]){ # type { where => ... } |
135 | %conf = %{$_[0]}; |
136 | } |
137 | elsif(@_ == 2 && ref $_[1]){ # type $name => { where => ... }* |
138 | $name = $_[0]; |
139 | %conf = %{$_[1]}; |
140 | } |
141 | elsif(@_ % 2){ # odd number of arguments |
7a50b450 |
142 | $name = shift; |
143 | %conf = @_; |
144 | } |
145 | else{ |
146 | %conf = @_; |
7a50b450 |
147 | } |
148 | |
73766a27 |
149 | $name = '__ANON__' if !defined $name; |
150 | |
151 | my $pkg = caller; |
152 | |
153 | |
0d062abb |
154 | if ($TYPE{$name} && $TYPE_SOURCE{$name} ne $pkg) { |
7dbebb1b |
155 | Carp::croak "The type constraint '$name' has already been created in $TYPE_SOURCE{$name} and cannot be created again in $pkg"; |
73766a27 |
156 | } |
29607c02 |
157 | my $constraint = delete $conf{where}; |
158 | my $as_constraint = find_or_create_isa_type_constraint(delete $conf{as} || 'Any'); |
7dbebb1b |
159 | |
160 | $TYPE_SOURCE{$name} = $pkg; |
684db121 |
161 | $TYPE{$name} = Mouse::Meta::TypeConstraint->new( |
162 | name => $name, |
163 | _compiled_type_constraint => ( |
164 | $constraint ? |
165 | sub { |
166 | local $_ = $_[0]; |
167 | $as_constraint->check($_[0]) && $constraint->($_[0]) |
168 | } : |
169 | sub { |
170 | local $_ = $_[0]; |
171 | $as_constraint->check($_[0]); |
172 | } |
173 | ), |
29607c02 |
174 | %conf |
684db121 |
175 | ); |
7dbebb1b |
176 | |
d9f8c878 |
177 | return $name; |
4188b837 |
178 | } |
179 | |
139d92d2 |
180 | sub coerce { |
cd2b9201 |
181 | my $name = shift; |
61a02a3a |
182 | |
183 | Carp::croak "Cannot find type '$name', perhaps you forgot to load it." |
cceb0e25 |
184 | unless $TYPE{$name}; |
61a02a3a |
185 | |
8a7f2a8a |
186 | unless ($COERCE{$name}) { |
187 | $COERCE{$name} = {}; |
188 | $COERCE_KEYS{$name} = []; |
189 | } |
cd2b9201 |
190 | |
191 | while (my($type, $code) = splice @_, 0, 2) { |
61a02a3a |
192 | Carp::croak "A coercion action already exists for '$type'" |
8a7f2a8a |
193 | if $COERCE{$name}->{$type}; |
61a02a3a |
194 | |
310ad28b |
195 | if (! $TYPE{$type}) { |
196 | # looks parameterized |
197 | if ($type =~ /^[^\[]+\[.+\]$/) { |
94593ae8 |
198 | $TYPE{$type} = _build_type_constraint($type); |
310ad28b |
199 | } else { |
200 | Carp::croak "Could not find the type constraint ($type) to coerce from" |
201 | } |
202 | } |
61a02a3a |
203 | |
cd2b9201 |
204 | push @{ $COERCE_KEYS{$name} }, $type; |
8a7f2a8a |
205 | $COERCE{$name}->{$type} = $code; |
61a02a3a |
206 | } |
cd2b9201 |
207 | return; |
4188b837 |
208 | } |
209 | |
139d92d2 |
210 | sub class_type { |
ecc6e3b1 |
211 | my($name, $conf) = @_; |
d9f8c878 |
212 | if ($conf && $conf->{class}) { |
213 | # No, you're using this wrong |
214 | warn "class_type() should be class_type(ClassName). Perhaps you're looking for subtype $name => as '$conf->{class}'?"; |
215 | subtype($name, as => $conf->{class}); |
216 | } else { |
217 | subtype( |
218 | $name => where => sub { $_->isa($name) } |
219 | ); |
220 | } |
ecc6e3b1 |
221 | } |
222 | |
139d92d2 |
223 | sub role_type { |
47f36c05 |
224 | my($name, $conf) = @_; |
225 | my $role = $conf->{role}; |
139d92d2 |
226 | subtype( |
61a02a3a |
227 | $name => where => sub { |
228 | return unless defined $_ && ref($_) && $_->isa('Mouse::Object'); |
229 | $_->meta->does_role($role); |
230 | } |
231 | ); |
47f36c05 |
232 | } |
233 | |
684db121 |
234 | # this is an original method for Mouse |
4188b837 |
235 | sub typecast_constraints { |
684db121 |
236 | my($class, $pkg, $types, $value) = @_; |
86b99892 |
237 | Carp::croak("wrong arguments count") unless @_==4; |
eec1bb49 |
238 | |
b3b74cc6 |
239 | local $_; |
684db121 |
240 | for my $type ( split /\|/, $types ) { |
8a7f2a8a |
241 | next unless $COERCE{$type}; |
8a7f2a8a |
242 | for my $coerce_type (@{ $COERCE_KEYS{$type}}) { |
b3b74cc6 |
243 | $_ = $value; |
684db121 |
244 | next unless $TYPE{$coerce_type}->check($value); |
b3b74cc6 |
245 | $_ = $value; |
c91d12e0 |
246 | $_ = $COERCE{$type}->{$coerce_type}->($value); |
684db121 |
247 | return $_ if $types->check($_); |
4188b837 |
248 | } |
249 | } |
4188b837 |
250 | return $value; |
251 | } |
252 | |
01904723 |
253 | my $serial_enum = 0; |
d44f0d03 |
254 | sub enum { |
01904723 |
255 | # enum ['small', 'medium', 'large'] |
256 | if (ref($_[0]) eq 'ARRAY') { |
257 | my @elements = @{ shift @_ }; |
258 | |
259 | my $name = 'Mouse::Util::TypeConstaints::Enum::Serial::' |
260 | . ++$serial_enum; |
261 | enum($name, @elements); |
262 | return $name; |
263 | } |
264 | |
265 | # enum size => 'small', 'medium', 'large' |
d44f0d03 |
266 | my $name = shift; |
267 | my %is_valid = map { $_ => 1 } @_; |
268 | |
269 | subtype( |
270 | $name => where => sub { $is_valid{$_} } |
271 | ); |
272 | } |
273 | |
321e5271 |
274 | sub _build_type_constraint { |
275 | |
276 | my $spec = shift; |
277 | my $code; |
94593ae8 |
278 | $spec =~ s/\s+//g; |
321e5271 |
279 | if ($spec =~ /^([^\[]+)\[(.+)\]$/) { |
280 | # parameterized |
281 | my $constraint = $1; |
282 | my $param = $2; |
283 | my $parent; |
284 | if ($constraint eq 'Maybe') { |
285 | $parent = _build_type_constraint('Undef'); |
286 | } else { |
287 | $parent = _build_type_constraint($constraint); |
288 | } |
289 | my $child = _build_type_constraint($param); |
290 | if ($constraint eq 'ArrayRef') { |
291 | my $code_str = |
292 | "#line " . __LINE__ . ' "' . __FILE__ . "\"\n" . |
293 | "sub {\n" . |
684db121 |
294 | " if (\$parent->check(\$_[0])) {\n" . |
321e5271 |
295 | " foreach my \$e (\@{\$_[0]}) {\n" . |
684db121 |
296 | " return () unless \$child->check(\$e);\n" . |
321e5271 |
297 | " }\n" . |
298 | " return 1;\n" . |
299 | " }\n" . |
300 | " return ();\n" . |
301 | "};\n" |
302 | ; |
303 | $code = eval $code_str or Carp::confess("Failed to generate inline type constraint: $@"); |
304 | } elsif ($constraint eq 'HashRef') { |
305 | my $code_str = |
306 | "#line " . __LINE__ . ' "' . __FILE__ . "\"\n" . |
307 | "sub {\n" . |
684db121 |
308 | " if (\$parent->check(\$_[0])) {\n" . |
321e5271 |
309 | " foreach my \$e (values \%{\$_[0]}) {\n" . |
684db121 |
310 | " return () unless \$child->check(\$e);\n" . |
321e5271 |
311 | " }\n" . |
312 | " return 1;\n" . |
313 | " }\n" . |
314 | " return ();\n" . |
315 | "};\n" |
316 | ; |
317 | $code = eval $code_str or Carp::confess($@); |
318 | } elsif ($constraint eq 'Maybe') { |
319 | my $code_str = |
320 | "#line " . __LINE__ . ' "' . __FILE__ . "\"\n" . |
321 | "sub {\n" . |
684db121 |
322 | " return \$child->check(\$_[0]) || \$parent->check(\$_[0]);\n" . |
321e5271 |
323 | "};\n" |
324 | ; |
325 | $code = eval $code_str or Carp::confess($@); |
326 | } else { |
766534c2 |
327 | Carp::confess("Support for parameterized types other than Maybe, ArrayRef or HashRef is not implemented yet"); |
321e5271 |
328 | } |
684db121 |
329 | $TYPE{$spec} = Mouse::Meta::TypeConstraint->new( _compiled_type_constraint => $code, name => $spec ); |
321e5271 |
330 | } else { |
331 | $code = $TYPE{ $spec }; |
332 | if (! $code) { |
5c5a61e0 |
333 | # is $spec a known role? If so, constrain with 'does' instead of 'isa' |
334 | require Mouse::Meta::Role; |
335 | my $check = Mouse::Meta::Role->_metaclass_cache($spec)? |
336 | 'does' : 'isa'; |
321e5271 |
337 | my $code_str = |
338 | "#line " . __LINE__ . ' "' . __FILE__ . "\"\n" . |
339 | "sub {\n" . |
5c5a61e0 |
340 | " Scalar::Util::blessed(\$_[0]) && \$_[0]->$check('$spec');\n" . |
321e5271 |
341 | "}" |
342 | ; |
343 | $code = eval $code_str or Carp::confess($@); |
684db121 |
344 | $TYPE{$spec} = Mouse::Meta::TypeConstraint->new( _compiled_type_constraint => $code, name => $spec ); |
321e5271 |
345 | } |
346 | } |
684db121 |
347 | return Mouse::Meta::TypeConstraint->new( _compiled_type_constraint => $code, name => $spec ); |
321e5271 |
348 | } |
349 | |
350 | sub find_type_constraint { |
351 | my $type_constraint = shift; |
352 | return $TYPE{$type_constraint}; |
353 | } |
354 | |
355 | sub find_or_create_isa_type_constraint { |
356 | my $type_constraint = shift; |
357 | |
9c85e9dc |
358 | Carp::confess("Got isa => type_constraints, but Mouse does not yet support parameterized types for containers other than ArrayRef and HashRef and Maybe (rt.cpan.org #39795)") |
359 | if $type_constraint =~ /\A ( [^\[]+ ) \[\.+\] \z/xms && |
360 | $1 ne 'ArrayRef' && |
361 | $1 ne 'HashRef' && |
362 | $1 ne 'Maybe' |
363 | ; |
364 | |
321e5271 |
365 | my $code; |
366 | |
367 | $type_constraint =~ s/\s+//g; |
94593ae8 |
368 | |
369 | $code = $TYPE{$type_constraint}; |
370 | if (! $code) { |
371 | my @type_constraints = split /\|/, $type_constraint; |
372 | if (@type_constraints == 1) { |
373 | $code = $TYPE{$type_constraints[0]} || |
374 | _build_type_constraint($type_constraints[0]); |
375 | } else { |
376 | my @code_list = map { |
377 | $TYPE{$_} || _build_type_constraint($_) |
378 | } @type_constraints; |
684db121 |
379 | $code = Mouse::Meta::TypeConstraint->new( |
380 | _compiled_type_constraint => sub { |
381 | my $i = 0; |
382 | for my $code (@code_list) { |
383 | return 1 if $code->check($_[0]); |
384 | } |
385 | return 0; |
386 | }, |
387 | name => $type_constraint, |
388 | ); |
94593ae8 |
389 | } |
321e5271 |
390 | } |
391 | return $code; |
392 | } |
393 | |
d60c78b9 |
394 | 1; |
395 | |
6feb83f1 |
396 | __END__ |
397 | |
398 | =head1 NAME |
399 | |
5893ee36 |
400 | Mouse::Util::TypeConstraints - Type constraint system for Mouse |
401 | |
402 | =head2 SYNOPSIS |
403 | |
404 | use Mouse::Util::TypeConstraints; |
405 | |
406 | subtype 'Natural' |
407 | => as 'Int' |
408 | => where { $_ > 0 }; |
409 | |
410 | subtype 'NaturalLessThanTen' |
411 | => as 'Natural' |
412 | => where { $_ < 10 } |
413 | => message { "This number ($_) is not less than ten!" }; |
414 | |
415 | coerce 'Num' |
416 | => from 'Str' |
417 | => via { 0+$_ }; |
418 | |
419 | enum 'RGBColors' => qw(red green blue); |
420 | |
421 | no Mouse::Util::TypeConstraints; |
422 | |
423 | =head1 DESCRIPTION |
424 | |
425 | This module provides Mouse with the ability to create custom type |
426 | constraints to be used in attribute definition. |
427 | |
428 | =head2 Important Caveat |
429 | |
430 | This is B<NOT> a type system for Perl 5. These are type constraints, |
431 | and they are not used by Mouse unless you tell it to. No type |
432 | inference is performed, expressions are not typed, etc. etc. etc. |
433 | |
434 | A type constraint is at heart a small "check if a value is valid" |
435 | function. A constraint can be associated with an attribute. This |
436 | simplifies parameter validation, and makes your code clearer to read, |
437 | because you can refer to constraints by name. |
438 | |
439 | =head2 Slightly Less Important Caveat |
440 | |
441 | It is B<always> a good idea to quote your type names. |
442 | |
443 | This prevents Perl from trying to execute the call as an indirect |
444 | object call. This can be an issue when you have a subtype with the |
445 | same name as a valid class. |
446 | |
447 | For instance: |
448 | |
449 | subtype DateTime => as Object => where { $_->isa('DateTime') }; |
450 | |
451 | will I<just work>, while this: |
452 | |
453 | use DateTime; |
454 | subtype DateTime => as Object => where { $_->isa('DateTime') }; |
455 | |
456 | will fail silently and cause many headaches. The simple way to solve |
457 | this, as well as future proof your subtypes from classes which have |
458 | yet to have been created, is to quote the type name: |
459 | |
460 | use DateTime; |
461 | subtype 'DateTime' => as 'Object' => where { $_->isa('DateTime') }; |
462 | |
463 | =head2 Default Type Constraints |
464 | |
465 | This module also provides a simple hierarchy for Perl 5 types, here is |
466 | that hierarchy represented visually. |
467 | |
468 | Any |
469 | Item |
470 | Bool |
471 | Maybe[`a] |
472 | Undef |
473 | Defined |
474 | Value |
475 | Num |
476 | Int |
477 | Str |
478 | ClassName |
479 | RoleName |
480 | Ref |
481 | ScalarRef |
482 | ArrayRef[`a] |
483 | HashRef[`a] |
484 | CodeRef |
485 | RegexpRef |
486 | GlobRef |
487 | FileHandle |
488 | Object |
489 | Role |
490 | |
491 | B<NOTE:> Any type followed by a type parameter C<[`a]> can be |
492 | parameterized, this means you can say: |
493 | |
494 | ArrayRef[Int] # an array of integers |
495 | HashRef[CodeRef] # a hash of str to CODE ref mappings |
496 | Maybe[Str] # value may be a string, may be undefined |
497 | |
498 | If Mouse finds a name in brackets that it does not recognize as an |
499 | existing type, it assumes that this is a class name, for example |
500 | C<ArrayRef[DateTime]>. |
501 | |
502 | B<NOTE:> Unless you parameterize a type, then it is invalid to include |
503 | the square brackets. I.e. C<ArrayRef[]> will be treated as a new type |
504 | name, I<not> as a parameterization of C<ArrayRef>. |
505 | |
506 | B<NOTE:> The C<Undef> type constraint for the most part works |
507 | correctly now, but edge cases may still exist, please use it |
508 | sparingly. |
509 | |
510 | B<NOTE:> The C<ClassName> type constraint does a complex package |
511 | existence check. This means that your class B<must> be loaded for this |
512 | type constraint to pass. |
513 | |
514 | B<NOTE:> The C<RoleName> constraint checks a string is a I<package |
515 | name> which is a role, like C<'MyApp::Role::Comparable'>. The C<Role> |
516 | constraint checks that an I<object does> the named role. |
517 | |
518 | =head2 Type Constraint Naming |
519 | |
520 | Type name declared via this module can only contain alphanumeric |
521 | characters, colons (:), and periods (.). |
522 | |
523 | Since the types created by this module are global, it is suggested |
524 | that you namespace your types just as you would namespace your |
525 | modules. So instead of creating a I<Color> type for your |
526 | B<My::Graphics> module, you would call the type |
527 | I<My::Graphics::Types::Color> instead. |
528 | |
529 | =head2 Use with Other Constraint Modules |
530 | |
531 | This module can play nicely with other constraint modules with some |
532 | slight tweaking. The C<where> clause in types is expected to be a |
533 | C<CODE> reference which checks it's first argument and returns a |
534 | boolean. Since most constraint modules work in a similar way, it |
535 | should be simple to adapt them to work with Mouse. |
536 | |
537 | For instance, this is how you could use it with |
538 | L<Declare::Constraints::Simple> to declare a completely new type. |
539 | |
540 | type 'HashOfArrayOfObjects', |
541 | { |
542 | where => IsHashRef( |
543 | -keys => HasLength, |
544 | -values => IsArrayRef(IsObject) |
545 | ) |
546 | }; |
547 | |
548 | Here is an example of using L<Test::Deep> and it's non-test |
549 | related C<eq_deeply> function. |
550 | |
551 | type 'ArrayOfHashOfBarsAndRandomNumbers' |
552 | => where { |
553 | eq_deeply($_, |
554 | array_each(subhashof({ |
555 | bar => isa('Bar'), |
556 | random_number => ignore() |
557 | }))) |
558 | }; |
6feb83f1 |
559 | |
560 | =head1 METHODS |
561 | |
562 | =head2 optimized_constraints -> HashRef[CODE] |
563 | |
564 | Returns the simple type constraints that Mouse understands. |
565 | |
c91d12e0 |
566 | =head1 FUNCTIONS |
567 | |
568 | =over 4 |
569 | |
570 | =item B<subtype 'Name' => as 'Parent' => where { } ...> |
571 | |
572 | =item B<subtype as 'Parent' => where { } ...> |
573 | |
574 | =item B<class_type ($class, ?$options)> |
575 | |
576 | =item B<role_type ($role, ?$options)> |
577 | |
578 | =item B<enum (\@values)> |
579 | |
580 | =back |
581 | |
5893ee36 |
582 | =head1 THANKS |
583 | |
584 | Much of this documentation was taken from L<Moose::Util::TypeConstraints> |
585 | |
6feb83f1 |
586 | =cut |
587 | |
588 | |