Commit | Line | Data |
a15dff8d |
1 | |
2 | package Moose::Util::TypeConstraints; |
3 | |
4 | use strict; |
5 | use warnings; |
6 | |
e90c03d0 |
7 | use Carp 'confess'; |
21f1e231 |
8 | use Scalar::Util 'blessed'; |
571dd39f |
9 | use Sub::Exporter; |
a15dff8d |
10 | |
21f1e231 |
11 | our $VERSION = '0.24'; |
d44714be |
12 | our $AUTHORITY = 'cpan:STEVAN'; |
a15dff8d |
13 | |
d9b40005 |
14 | ## -------------------------------------------------------- |
e85d2a5d |
15 | # Prototyped subs must be predeclared because we have a |
16 | # circular dependency with Moose::Meta::Attribute et. al. |
17 | # so in case of us being use'd first the predeclaration |
d9b40005 |
18 | # ensures the prototypes are in scope when consumers are |
19 | # compiled. |
20 | |
21 | # creation and location |
0fbd4b0a |
22 | sub find_type_constraint ($); |
3fef8ce8 |
23 | sub register_type_constraint ($); |
0fbd4b0a |
24 | sub find_or_create_type_constraint ($;$); |
620db045 |
25 | sub find_or_parse_type_constraint ($); |
26 | sub find_or_create_isa_type_constraint ($); |
27 | sub find_or_create_does_type_constraint ($); |
0fbd4b0a |
28 | sub create_type_constraint_union (@); |
29 | sub create_parameterized_type_constraint ($); |
4ab662d6 |
30 | sub create_class_type_constraint ($;$); |
620db045 |
31 | sub create_role_type_constraint ($;$); |
dabed765 |
32 | sub create_enum_type_constraint ($$); |
d9b40005 |
33 | |
34 | # dah sugah! |
35 | sub type ($$;$$); |
36 | sub subtype ($$;$$$); |
4ab662d6 |
37 | sub class_type ($;$); |
d9b40005 |
38 | sub coerce ($@); |
39 | sub as ($); |
40 | sub from ($); |
41 | sub where (&); |
42 | sub via (&); |
43 | sub message (&); |
44 | sub optimize_as (&); |
45 | sub enum ($;@); |
46 | |
e85d2a5d |
47 | ## private stuff ... |
d9b40005 |
48 | sub _create_type_constraint ($$$;$$); |
49 | sub _install_type_coercions ($$); |
50 | |
51 | ## -------------------------------------------------------- |
8c4acc60 |
52 | |
4e036ee4 |
53 | use Moose::Meta::TypeConstraint; |
3726f905 |
54 | use Moose::Meta::TypeConstraint::Union; |
0fbd4b0a |
55 | use Moose::Meta::TypeConstraint::Parameterized; |
7e4e1ad4 |
56 | use Moose::Meta::TypeConstraint::Parameterizable; |
620db045 |
57 | use Moose::Meta::TypeConstraint::Class; |
58 | use Moose::Meta::TypeConstraint::Role; |
dabed765 |
59 | use Moose::Meta::TypeConstraint::Enum; |
2ca63f5d |
60 | use Moose::Meta::TypeCoercion; |
3726f905 |
61 | use Moose::Meta::TypeCoercion::Union; |
22aed3c0 |
62 | use Moose::Meta::TypeConstraint::Registry; |
28ffb449 |
63 | use Moose::Util::TypeConstraints::OptimizedConstraints; |
4e036ee4 |
64 | |
571dd39f |
65 | my @exports = qw/ |
620db045 |
66 | type subtype class_type role_type as where message optimize_as |
e85d2a5d |
67 | coerce from via |
571dd39f |
68 | enum |
69 | find_type_constraint |
3fef8ce8 |
70 | register_type_constraint |
571dd39f |
71 | /; |
72 | |
e85d2a5d |
73 | Sub::Exporter::setup_exporter({ |
571dd39f |
74 | exports => \@exports, |
75 | groups => { default => [':all'] } |
76 | }); |
77 | |
78 | sub unimport { |
e85d2a5d |
79 | no strict 'refs'; |
571dd39f |
80 | my $class = caller(); |
81 | # loop through the exports ... |
82 | foreach my $name (@exports) { |
83 | # if we find one ... |
84 | if (defined &{$class . '::' . $name}) { |
85 | my $keyword = \&{$class . '::' . $name}; |
e85d2a5d |
86 | |
571dd39f |
87 | # make sure it is from Moose |
53dd42d8 |
88 | my ($pkg_name) = Class::MOP::get_code_info($keyword); |
571dd39f |
89 | next if $@; |
90 | next if $pkg_name ne 'Moose::Util::TypeConstraints'; |
e85d2a5d |
91 | |
571dd39f |
92 | # and if it is from Moose then undef the slot |
93 | delete ${$class . '::'}{$name}; |
94 | } |
2c0cbef7 |
95 | } |
571dd39f |
96 | } |
a15dff8d |
97 | |
d9b40005 |
98 | ## -------------------------------------------------------- |
99 | ## type registry and some useful functions for it |
100 | ## -------------------------------------------------------- |
101 | |
22aed3c0 |
102 | my $REGISTRY = Moose::Meta::TypeConstraint::Registry->new; |
587ae0d2 |
103 | |
d9b40005 |
104 | sub get_type_constraint_registry { $REGISTRY } |
e85d2a5d |
105 | sub list_all_type_constraints { keys %{$REGISTRY->type_constraints} } |
d9b40005 |
106 | sub export_type_constraints_as_functions { |
107 | my $pkg = caller(); |
108 | no strict 'refs'; |
a0f8153d |
109 | foreach my $constraint (keys %{$REGISTRY->type_constraints}) { |
42bc21a4 |
110 | my $tc = $REGISTRY->get_type_constraint($constraint)->_compiled_type_constraint; |
111 | *{"${pkg}::${constraint}"} = sub { $tc->($_[0]) ? 1 : undef }; |
a0f8153d |
112 | } |
d9b40005 |
113 | } |
182134e8 |
114 | |
d9b40005 |
115 | sub create_type_constraint_union (@) { |
116 | my @type_constraint_names; |
e85d2a5d |
117 | |
f1917f58 |
118 | if (scalar @_ == 1 && _detect_type_constraint_union($_[0])) { |
119 | @type_constraint_names = _parse_type_constraint_union($_[0]); |
d9b40005 |
120 | } |
121 | else { |
122 | @type_constraint_names = @_; |
429ccc11 |
123 | } |
e85d2a5d |
124 | |
3726f905 |
125 | (scalar @type_constraint_names >= 2) |
e85d2a5d |
126 | || confess "You must pass in at least 2 type names to make a union"; |
127 | |
d9b40005 |
128 | ($REGISTRY->has_type_constraint($_)) |
129 | || confess "Could not locate type constraint ($_) for the union" |
130 | foreach @type_constraint_names; |
e85d2a5d |
131 | |
3726f905 |
132 | return Moose::Meta::TypeConstraint::Union->new( |
133 | type_constraints => [ |
e85d2a5d |
134 | map { |
135 | $REGISTRY->get_type_constraint($_) |
136 | } @type_constraint_names |
3726f905 |
137 | ], |
e85d2a5d |
138 | ); |
182134e8 |
139 | } |
a15dff8d |
140 | |
0fbd4b0a |
141 | sub create_parameterized_type_constraint ($) { |
d9b40005 |
142 | my $type_constraint_name = shift; |
e85d2a5d |
143 | |
0fbd4b0a |
144 | my ($base_type, $type_parameter) = _parse_parameterized_type_constraint($type_constraint_name); |
e85d2a5d |
145 | |
0fbd4b0a |
146 | (defined $base_type && defined $type_parameter) |
d9b40005 |
147 | || confess "Could not parse type name ($type_constraint_name) correctly"; |
e85d2a5d |
148 | |
d9b40005 |
149 | ($REGISTRY->has_type_constraint($base_type)) |
150 | || confess "Could not locate the base type ($base_type)"; |
e85d2a5d |
151 | |
0fbd4b0a |
152 | return Moose::Meta::TypeConstraint::Parameterized->new( |
d9b40005 |
153 | name => $type_constraint_name, |
154 | parent => $REGISTRY->get_type_constraint($base_type), |
620db045 |
155 | type_parameter => find_or_create_isa_type_constraint($type_parameter), |
e85d2a5d |
156 | ); |
22aed3c0 |
157 | } |
158 | |
4ab662d6 |
159 | #should we also support optimized checks? |
160 | sub create_class_type_constraint ($;$) { |
620db045 |
161 | my ( $class, $options ) = @_; |
162 | |
3fef8ce8 |
163 | # too early for this check |
164 | #find_type_constraint("ClassName")->check($class) |
165 | # || confess "Can't create a class type constraint because '$class' is not a class name"; |
166 | |
620db045 |
167 | my %options = ( |
168 | class => $class, |
169 | name => $class, |
170 | %{ $options || {} }, |
4ab662d6 |
171 | ); |
620db045 |
172 | |
173 | $options{name} ||= "__ANON__"; |
174 | |
175 | Moose::Meta::TypeConstraint::Class->new( %options ); |
3fef8ce8 |
176 | } |
177 | |
620db045 |
178 | sub create_role_type_constraint ($;$) { |
179 | my ( $role, $options ) = @_; |
e85d2a5d |
180 | |
620db045 |
181 | # too early for this check |
182 | #find_type_constraint("ClassName")->check($class) |
183 | # || confess "Can't create a class type constraint because '$class' is not a class name"; |
e85d2a5d |
184 | |
620db045 |
185 | my %options = ( |
186 | role => $role, |
187 | name => $role, |
188 | %{ $options || {} }, |
189 | ); |
e85d2a5d |
190 | |
620db045 |
191 | $options{name} ||= "__ANON__"; |
192 | |
193 | Moose::Meta::TypeConstraint::Role->new( %options ); |
194 | } |
195 | |
196 | |
197 | sub find_or_create_type_constraint ($;$) { |
198 | my ( $type_constraint_name, $options_for_anon_type ) = @_; |
199 | |
200 | if ( my $constraint = find_or_parse_type_constraint($type_constraint_name) ) { |
201 | return $constraint; |
d9b40005 |
202 | } |
620db045 |
203 | elsif ( defined $options_for_anon_type ) { |
d9b40005 |
204 | # NOTE: |
4ab662d6 |
205 | # if there is no $options_for_anon_type |
206 | # specified, then we assume they don't |
f3c4e20e |
207 | # want to create one, and return nothing. |
f3c4e20e |
208 | |
d9b40005 |
209 | # otherwise assume that we should create |
e85d2a5d |
210 | # an ANON type with the $options_for_anon_type |
d9b40005 |
211 | # options which can be passed in. It should |
e85d2a5d |
212 | # be noted that these don't get registered |
d9b40005 |
213 | # so we need to return it. |
214 | # - SL |
215 | return Moose::Meta::TypeConstraint->new( |
216 | name => '__ANON__', |
e85d2a5d |
217 | %{$options_for_anon_type} |
d9b40005 |
218 | ); |
219 | } |
e85d2a5d |
220 | |
620db045 |
221 | return; |
222 | } |
223 | |
224 | sub find_or_create_isa_type_constraint ($) { |
225 | my $type_constraint_name = shift; |
5e2ada84 |
226 | find_or_parse_type_constraint($type_constraint_name) || create_class_type_constraint($type_constraint_name) |
620db045 |
227 | } |
228 | |
229 | sub find_or_create_does_type_constraint ($) { |
230 | my $type_constraint_name = shift; |
5e2ada84 |
231 | find_or_parse_type_constraint($type_constraint_name) || create_role_type_constraint($type_constraint_name) |
620db045 |
232 | } |
233 | |
234 | sub find_or_parse_type_constraint ($) { |
235 | my $type_constraint_name = shift; |
236 | |
237 | return $REGISTRY->get_type_constraint($type_constraint_name) |
238 | if $REGISTRY->has_type_constraint($type_constraint_name); |
239 | |
240 | my $constraint; |
241 | |
242 | if (_detect_type_constraint_union($type_constraint_name)) { |
243 | $constraint = create_type_constraint_union($type_constraint_name); |
244 | } |
245 | elsif (_detect_parameterized_type_constraint($type_constraint_name)) { |
246 | $constraint = create_parameterized_type_constraint($type_constraint_name); |
247 | } else { |
248 | return; |
249 | } |
250 | |
d9b40005 |
251 | $REGISTRY->add_type_constraint($constraint); |
e85d2a5d |
252 | return $constraint; |
d9b40005 |
253 | } |
22aed3c0 |
254 | |
255 | ## -------------------------------------------------------- |
256 | ## exported functions ... |
257 | ## -------------------------------------------------------- |
258 | |
eeedfc8a |
259 | sub find_type_constraint ($) { |
260 | my $type = shift; |
261 | |
262 | if ( blessed $type and $type->isa("Moose::Meta::TypeConstraint") ) { |
263 | return $type; |
264 | } else { |
265 | return $REGISTRY->get_type_constraint($type); |
266 | } |
267 | } |
22aed3c0 |
268 | |
3fef8ce8 |
269 | sub register_type_constraint ($) { |
270 | my $constraint = shift; |
271 | confess "can't register an unnamed type constraint" unless defined $constraint->name; |
272 | $REGISTRY->add_type_constraint($constraint); |
dabed765 |
273 | return $constraint; |
3fef8ce8 |
274 | } |
275 | |
7c13858b |
276 | # type constructors |
a15dff8d |
277 | |
815ec671 |
278 | sub type ($$;$$) { |
1b7df21f |
279 | splice(@_, 1, 0, undef); |
a0f8153d |
280 | goto &_create_type_constraint; |
a15dff8d |
281 | } |
282 | |
8ecb1fa0 |
283 | sub subtype ($$;$$$) { |
86629f93 |
284 | # NOTE: |
285 | # this adds an undef for the name |
286 | # if this is an anon-subtype: |
287 | # subtype(Num => where { $_ % 2 == 0 }) # anon 'even' subtype |
288 | # but if the last arg is not a code |
289 | # ref then it is a subtype alias: |
290 | # subtype(MyNumbers => as Num); # now MyNumbers is the same as Num |
e85d2a5d |
291 | # ... yeah I know it's ugly code |
86629f93 |
292 | # - SL |
21f1e231 |
293 | unshift @_ => undef if scalar @_ <= 2 && ('CODE' eq ref($_[1])); |
a0f8153d |
294 | goto &_create_type_constraint; |
a15dff8d |
295 | } |
296 | |
4ab662d6 |
297 | sub class_type ($;$) { |
298 | register_type_constraint( |
299 | create_class_type_constraint( |
300 | $_[0], |
301 | ( defined($_[1]) ? $_[1] : () ), |
302 | ) |
303 | ); |
3fef8ce8 |
304 | } |
305 | |
620db045 |
306 | sub role_type ($;$) { |
307 | register_type_constraint( |
308 | create_role_type_constraint( |
309 | $_[0], |
310 | ( defined($_[1]) ? $_[1] : () ), |
311 | ) |
312 | ); |
313 | } |
314 | |
4b598ea3 |
315 | sub coerce ($@) { |
e85d2a5d |
316 | my ($type_name, @coercion_map) = @_; |
7c13858b |
317 | _install_type_coercions($type_name, \@coercion_map); |
182134e8 |
318 | } |
319 | |
76d37e5a |
320 | sub as ($) { $_[0] } |
321 | sub from ($) { $_[0] } |
322 | sub where (&) { $_[0] } |
323 | sub via (&) { $_[0] } |
8ecb1fa0 |
324 | |
325 | sub message (&) { +{ message => $_[0] } } |
326 | sub optimize_as (&) { +{ optimized => $_[0] } } |
a15dff8d |
327 | |
2c0cbef7 |
328 | sub enum ($;@) { |
fcec2383 |
329 | my ($type_name, @values) = @_; |
4ab662d6 |
330 | # NOTE: |
331 | # if only an array-ref is passed then |
9f4334a1 |
332 | # you get an anon-enum |
333 | # - SL |
334 | if (ref $type_name eq 'ARRAY' && !@values) { |
335 | @values = @$type_name; |
336 | $type_name = undef; |
337 | } |
2c0cbef7 |
338 | (scalar @values >= 2) |
339 | || confess "You must have at least two values to enumerate through"; |
c4fe165f |
340 | my %valid = map { $_ => 1 } @values; |
dabed765 |
341 | |
342 | register_type_constraint( |
343 | create_enum_type_constraint( |
344 | $type_name, |
345 | \@values, |
346 | ) |
347 | ); |
348 | } |
349 | |
350 | sub create_enum_type_constraint ($$) { |
351 | my ( $type_name, $values ) = @_; |
352 | |
353 | Moose::Meta::TypeConstraint::Enum->new( |
354 | name => $type_name || '__ANON__', |
355 | values => $values, |
a0f8153d |
356 | ); |
fcec2383 |
357 | } |
358 | |
d9b40005 |
359 | ## -------------------------------------------------------- |
360 | ## desugaring functions ... |
361 | ## -------------------------------------------------------- |
362 | |
e85d2a5d |
363 | sub _create_type_constraint ($$$;$$) { |
d9b40005 |
364 | my $name = shift; |
365 | my $parent = shift; |
8de73ff1 |
366 | my $check = shift; |
e85d2a5d |
367 | |
d9b40005 |
368 | my ($message, $optimized); |
369 | for (@_) { |
370 | $message = $_->{message} if exists $_->{message}; |
e85d2a5d |
371 | $optimized = $_->{optimized} if exists $_->{optimized}; |
d9b40005 |
372 | } |
373 | |
374 | my $pkg_defined_in = scalar(caller(0)); |
e85d2a5d |
375 | |
d9b40005 |
376 | if (defined $name) { |
377 | my $type = $REGISTRY->get_type_constraint($name); |
e85d2a5d |
378 | |
d9b40005 |
379 | ($type->_package_defined_in eq $pkg_defined_in) |
e85d2a5d |
380 | || confess ("The type constraint '$name' has already been created in " |
d9b40005 |
381 | . $type->_package_defined_in . " and cannot be created again in " |
382 | . $pkg_defined_in) |
e85d2a5d |
383 | if defined $type; |
384 | } |
385 | |
36dbd105 |
386 | my $class = "Moose::Meta::TypeConstraint"; |
4ab662d6 |
387 | |
36dbd105 |
388 | # FIXME should probably not be a special case |
36dbd105 |
389 | if ( defined $parent and $parent = find_or_parse_type_constraint($parent) ) { |
a84a89ba |
390 | $class = "Moose::Meta::TypeConstraint::Parameterizable" |
391 | if $parent->isa("Moose::Meta::TypeConstraint::Parameterizable"); |
36dbd105 |
392 | } |
393 | |
394 | my $constraint = $class->new( |
d9b40005 |
395 | name => $name || '__ANON__', |
d9b40005 |
396 | package_defined_in => $pkg_defined_in, |
e85d2a5d |
397 | |
398 | ($parent ? (parent => $parent ) : ()), |
399 | ($check ? (constraint => $check) : ()), |
400 | ($message ? (message => $message) : ()), |
401 | ($optimized ? (optimized => $optimized) : ()), |
d9b40005 |
402 | ); |
4ab662d6 |
403 | |
8de73ff1 |
404 | # NOTE: |
4ab662d6 |
405 | # if we have a type constraint union, and no |
8de73ff1 |
406 | # type check, this means we are just aliasing |
4ab662d6 |
407 | # the union constraint, which means we need to |
8de73ff1 |
408 | # handle this differently. |
409 | # - SL |
4ab662d6 |
410 | if (not(defined $check) |
411 | && $parent->isa('Moose::Meta::TypeConstraint::Union') |
412 | && $parent->has_coercion |
8de73ff1 |
413 | ){ |
414 | $constraint->coercion(Moose::Meta::TypeCoercion::Union->new( |
415 | type_constraint => $parent |
416 | )); |
4ab662d6 |
417 | } |
d9b40005 |
418 | |
419 | $REGISTRY->add_type_constraint($constraint) |
420 | if defined $name; |
421 | |
422 | return $constraint; |
423 | } |
424 | |
e85d2a5d |
425 | sub _install_type_coercions ($$) { |
d9b40005 |
426 | my ($type_name, $coercion_map) = @_; |
427 | my $type = $REGISTRY->get_type_constraint($type_name); |
6f9ff1af |
428 | (defined $type) |
429 | || confess "Cannot find type '$type_name', perhaps you forgot to load it."; |
41e007e4 |
430 | if ($type->has_coercion) { |
431 | $type->coercion->add_type_coercions(@$coercion_map); |
432 | } |
433 | else { |
434 | my $type_coercion = Moose::Meta::TypeCoercion->new( |
435 | type_coercion_map => $coercion_map, |
436 | type_constraint => $type |
437 | ); |
438 | $type->coercion($type_coercion); |
439 | } |
d9b40005 |
440 | } |
441 | |
442 | ## -------------------------------------------------------- |
f1917f58 |
443 | ## type notation parsing ... |
444 | ## -------------------------------------------------------- |
445 | |
446 | { |
e85d2a5d |
447 | # All I have to say is mugwump++ cause I know |
448 | # do not even have enough regexp-fu to be able |
449 | # to have written this (I can only barely |
f1917f58 |
450 | # understand it as it is) |
e85d2a5d |
451 | # - SL |
452 | |
f1917f58 |
453 | use re "eval"; |
454 | |
3796382a |
455 | my $valid_chars = qr{[\w:]}; |
f1917f58 |
456 | my $type_atom = qr{ $valid_chars+ }; |
457 | |
458 | my $type = qr{ $valid_chars+ (?: \[ (??{$any}) \] )? }x; |
459 | my $type_capture_parts = qr{ ($valid_chars+) (?: \[ ((??{$any})) \] )? }x; |
460 | my $type_with_parameter = qr{ $valid_chars+ \[ (??{$any}) \] }x; |
461 | |
3796382a |
462 | my $op_union = qr{ \s* \| \s* }x; |
f1917f58 |
463 | my $union = qr{ $type (?: $op_union $type )+ }x; |
464 | |
465 | our $any = qr{ $type | $union }x; |
466 | |
0fbd4b0a |
467 | sub _parse_parameterized_type_constraint { |
e85d2a5d |
468 | $_[0] =~ m{ $type_capture_parts }x; |
469 | return ($1, $2); |
f1917f58 |
470 | } |
471 | |
0fbd4b0a |
472 | sub _detect_parameterized_type_constraint { |
e85d2a5d |
473 | $_[0] =~ m{ ^ $type_with_parameter $ }x; |
f1917f58 |
474 | } |
475 | |
476 | sub _parse_type_constraint_union { |
e85d2a5d |
477 | my $given = shift; |
478 | my @rv; |
479 | while ( $given =~ m{ \G (?: $op_union )? ($type) }gcx ) { |
82a5b1a7 |
480 | push @rv => $1; |
e85d2a5d |
481 | } |
482 | (pos($given) eq length($given)) |
483 | || confess "'$given' didn't parse (parse-pos=" |
484 | . pos($given) |
485 | . " and str-length=" |
486 | . length($given) |
487 | . ")"; |
488 | @rv; |
f1917f58 |
489 | } |
490 | |
491 | sub _detect_type_constraint_union { |
e85d2a5d |
492 | $_[0] =~ m{^ $type $op_union $type ( $op_union .* )? $}x; |
f1917f58 |
493 | } |
494 | } |
495 | |
496 | ## -------------------------------------------------------- |
d9b40005 |
497 | # define some basic built-in types |
498 | ## -------------------------------------------------------- |
a15dff8d |
499 | |
f65cb534 |
500 | type 'Any' => where { 1 }; # meta-type including all |
e85d2a5d |
501 | type 'Item' => where { 1 }; # base-type |
a15dff8d |
502 | |
fd542f49 |
503 | subtype 'Undef' => as 'Item' => where { !defined($_) }; |
504 | subtype 'Defined' => as 'Item' => where { defined($_) }; |
a15dff8d |
505 | |
8ecb1fa0 |
506 | subtype 'Bool' |
e85d2a5d |
507 | => as 'Item' |
8ecb1fa0 |
508 | => where { !defined($_) || $_ eq "" || "$_" eq '1' || "$_" eq '0' }; |
5a4c5493 |
509 | |
e85d2a5d |
510 | subtype 'Value' |
511 | => as 'Defined' |
512 | => where { !ref($_) } |
28ffb449 |
513 | => optimize_as \&Moose::Util::TypeConstraints::OptimizedConstraints::Value; |
e85d2a5d |
514 | |
8ecb1fa0 |
515 | subtype 'Ref' |
e85d2a5d |
516 | => as 'Defined' |
517 | => where { ref($_) } |
28ffb449 |
518 | => optimize_as \&Moose::Util::TypeConstraints::OptimizedConstraints::Ref; |
8ecb1fa0 |
519 | |
e85d2a5d |
520 | subtype 'Str' |
521 | => as 'Value' |
522 | => where { 1 } |
28ffb449 |
523 | => optimize_as \&Moose::Util::TypeConstraints::OptimizedConstraints::Str; |
8ecb1fa0 |
524 | |
e85d2a5d |
525 | subtype 'Num' |
526 | => as 'Value' |
527 | => where { Scalar::Util::looks_like_number($_) } |
28ffb449 |
528 | => optimize_as \&Moose::Util::TypeConstraints::OptimizedConstraints::Num; |
e85d2a5d |
529 | |
530 | subtype 'Int' |
531 | => as 'Num' |
8ecb1fa0 |
532 | => where { "$_" =~ /^-?[0-9]+$/ } |
28ffb449 |
533 | => optimize_as \&Moose::Util::TypeConstraints::OptimizedConstraints::Int; |
8ecb1fa0 |
534 | |
28ffb449 |
535 | subtype 'ScalarRef' => as 'Ref' => where { ref($_) eq 'SCALAR' } => optimize_as \&Moose::Util::TypeConstraints::OptimizedConstraints::ScalarRef; |
28ffb449 |
536 | subtype 'CodeRef' => as 'Ref' => where { ref($_) eq 'CODE' } => optimize_as \&Moose::Util::TypeConstraints::OptimizedConstraints::CodeRef; |
537 | subtype 'RegexpRef' => as 'Ref' => where { ref($_) eq 'Regexp' } => optimize_as \&Moose::Util::TypeConstraints::OptimizedConstraints::RegexpRef; |
538 | subtype 'GlobRef' => as 'Ref' => where { ref($_) eq 'GLOB' } => optimize_as \&Moose::Util::TypeConstraints::OptimizedConstraints::GlobRef; |
a15dff8d |
539 | |
0a5bd159 |
540 | # NOTE: |
e85d2a5d |
541 | # scalar filehandles are GLOB refs, |
0a5bd159 |
542 | # but a GLOB ref is not always a filehandle |
e85d2a5d |
543 | subtype 'FileHandle' |
544 | => as 'GlobRef' |
128c601e |
545 | => where { Scalar::Util::openhandle($_) || ( blessed($_) && $_->isa("IO::Handle") ) } |
28ffb449 |
546 | => optimize_as \&Moose::Util::TypeConstraints::OptimizedConstraints::FileHandle; |
0a5bd159 |
547 | |
e85d2a5d |
548 | # NOTE: |
a15dff8d |
549 | # blessed(qr/.../) returns true,.. how odd |
e85d2a5d |
550 | subtype 'Object' |
551 | => as 'Ref' |
8ecb1fa0 |
552 | => where { blessed($_) && blessed($_) ne 'Regexp' } |
28ffb449 |
553 | => optimize_as \&Moose::Util::TypeConstraints::OptimizedConstraints::Object; |
a15dff8d |
554 | |
e85d2a5d |
555 | subtype 'Role' |
556 | => as 'Object' |
8ecb1fa0 |
557 | => where { $_->can('does') } |
28ffb449 |
558 | => optimize_as \&Moose::Util::TypeConstraints::OptimizedConstraints::Role; |
e85d2a5d |
559 | |
0e0709ea |
560 | my $_class_name_checker = sub { |
561 | return if ref($_[0]); |
562 | return unless defined($_[0]) && length($_[0]); |
563 | |
564 | # walk the symbol table tree to avoid autovififying |
565 | # \*{${main::}{"Foo::"}} == \*main::Foo:: |
566 | |
567 | my $pack = \*::; |
568 | foreach my $part (split('::', $_[0])) { |
569 | return unless exists ${$$pack}{"${part}::"}; |
570 | $pack = \*{${$$pack}{"${part}::"}}; |
571 | } |
572 | |
573 | # check for $VERSION or @ISA |
574 | return 1 if exists ${$$pack}{VERSION} |
575 | && defined *{${$$pack}{VERSION}}{SCALAR}; |
576 | return 1 if exists ${$$pack}{ISA} |
577 | && defined *{${$$pack}{ISA}}{ARRAY}; |
578 | |
579 | # check for any method |
580 | foreach ( keys %{$$pack} ) { |
581 | next if substr($_, -2, 2) eq '::'; |
582 | return 1 if defined *{${$$pack}{$_}}{CODE}; |
583 | } |
584 | |
585 | # fail |
586 | return; |
587 | }; |
588 | |
e85d2a5d |
589 | subtype 'ClassName' |
590 | => as 'Str' |
0e0709ea |
591 | => $_class_name_checker # where ... |
592 | => { optimize => $_class_name_checker }; |
02a0fb52 |
593 | |
d9b40005 |
594 | ## -------------------------------------------------------- |
7e4e1ad4 |
595 | # parameterizable types ... |
596 | |
597 | $REGISTRY->add_type_constraint( |
598 | Moose::Meta::TypeConstraint::Parameterizable->new( |
599 | name => 'ArrayRef', |
600 | package_defined_in => __PACKAGE__, |
601 | parent => find_type_constraint('Ref'), |
602 | constraint => sub { ref($_) eq 'ARRAY' }, |
603 | optimized => \&Moose::Util::TypeConstraints::OptimizedConstraints::ArrayRef, |
604 | constraint_generator => sub { |
605 | my $type_parameter = shift; |
dabed765 |
606 | my $check = $type_parameter->_compiled_type_constraint; |
7e4e1ad4 |
607 | return sub { |
608 | foreach my $x (@$_) { |
dabed765 |
609 | ($check->($x)) || return |
7e4e1ad4 |
610 | } 1; |
611 | } |
612 | } |
613 | ) |
614 | ); |
615 | |
616 | $REGISTRY->add_type_constraint( |
617 | Moose::Meta::TypeConstraint::Parameterizable->new( |
618 | name => 'HashRef', |
619 | package_defined_in => __PACKAGE__, |
620 | parent => find_type_constraint('Ref'), |
621 | constraint => sub { ref($_) eq 'HASH' }, |
622 | optimized => \&Moose::Util::TypeConstraints::OptimizedConstraints::HashRef, |
623 | constraint_generator => sub { |
4ab662d6 |
624 | my $type_parameter = shift; |
dabed765 |
625 | my $check = $type_parameter->_compiled_type_constraint; |
7e4e1ad4 |
626 | return sub { |
627 | foreach my $x (values %$_) { |
dabed765 |
628 | ($check->($x)) || return |
7e4e1ad4 |
629 | } 1; |
630 | } |
631 | } |
632 | ) |
633 | ); |
634 | |
635 | $REGISTRY->add_type_constraint( |
636 | Moose::Meta::TypeConstraint::Parameterizable->new( |
637 | name => 'Maybe', |
638 | package_defined_in => __PACKAGE__, |
639 | parent => find_type_constraint('Item'), |
640 | constraint => sub { 1 }, |
641 | constraint_generator => sub { |
4ab662d6 |
642 | my $type_parameter = shift; |
dabed765 |
643 | my $check = $type_parameter->_compiled_type_constraint; |
7e4e1ad4 |
644 | return sub { |
dabed765 |
645 | return 1 if not(defined($_)) || $check->($_); |
7e4e1ad4 |
646 | return; |
647 | } |
648 | } |
649 | ) |
650 | ); |
651 | |
4ab662d6 |
652 | my @PARAMETERIZABLE_TYPES = map { |
653 | $REGISTRY->get_type_constraint($_) |
7e4e1ad4 |
654 | } qw[ArrayRef HashRef Maybe]; |
655 | |
656 | sub get_all_parameterizable_types { @PARAMETERIZABLE_TYPES } |
4ab662d6 |
657 | sub add_parameterizable_type { |
7e4e1ad4 |
658 | my $type = shift; |
659 | (blessed $type && $type->isa('Moose::Meta::TypeConstraint::Parameterizable')) |
660 | || confess "Type must be a Moose::Meta::TypeConstraint::Parameterizable not $type"; |
661 | push @PARAMETERIZABLE_TYPES => $type; |
4ab662d6 |
662 | } |
7e4e1ad4 |
663 | |
664 | ## -------------------------------------------------------- |
d9b40005 |
665 | # end of built-in types ... |
666 | ## -------------------------------------------------------- |
667 | |
943596a6 |
668 | { |
669 | my @BUILTINS = list_all_type_constraints(); |
670 | sub list_all_builtin_type_constraints { @BUILTINS } |
671 | } |
672 | |
a15dff8d |
673 | 1; |
674 | |
675 | __END__ |
676 | |
677 | =pod |
678 | |
679 | =head1 NAME |
680 | |
e522431d |
681 | Moose::Util::TypeConstraints - Type constraint system for Moose |
a15dff8d |
682 | |
683 | =head1 SYNOPSIS |
684 | |
685 | use Moose::Util::TypeConstraints; |
686 | |
2c0cbef7 |
687 | type 'Num' => where { Scalar::Util::looks_like_number($_) }; |
e85d2a5d |
688 | |
689 | subtype 'Natural' |
690 | => as 'Num' |
a15dff8d |
691 | => where { $_ > 0 }; |
e85d2a5d |
692 | |
693 | subtype 'NaturalLessThanTen' |
2c0cbef7 |
694 | => as 'Natural' |
79592a54 |
695 | => where { $_ < 10 } |
696 | => message { "This number ($_) is not less than ten!" }; |
e85d2a5d |
697 | |
698 | coerce 'Num' |
2c0cbef7 |
699 | => from 'Str' |
e85d2a5d |
700 | => via { 0+$_ }; |
701 | |
2c0cbef7 |
702 | enum 'RGBColors' => qw(red green blue); |
a15dff8d |
703 | |
704 | =head1 DESCRIPTION |
705 | |
e85d2a5d |
706 | This module provides Moose with the ability to create custom type |
707 | contraints to be used in attribute definition. |
e522431d |
708 | |
6ba6d68c |
709 | =head2 Important Caveat |
710 | |
e85d2a5d |
711 | This is B<NOT> a type system for Perl 5. These are type constraints, |
712 | and they are not used by Moose unless you tell it to. No type |
713 | inference is performed, expression are not typed, etc. etc. etc. |
6ba6d68c |
714 | |
e85d2a5d |
715 | This is simply a means of creating small constraint functions which |
004222dc |
716 | can be used to simplify your own type-checking code, with the added |
717 | side benefit of making your intentions clearer through self-documentation. |
6ba6d68c |
718 | |
2c0cbef7 |
719 | =head2 Slightly Less Important Caveat |
720 | |
004222dc |
721 | It is B<always> a good idea to quote your type and subtype names. |
722 | |
e85d2a5d |
723 | This is to prevent perl from trying to execute the call as an indirect |
2c0cbef7 |
724 | object call. This issue only seems to come up when you have a subtype |
e85d2a5d |
725 | the same name as a valid class, but when the issue does arise it tends |
726 | to be quite annoying to debug. |
2c0cbef7 |
727 | |
728 | So for instance, this: |
e85d2a5d |
729 | |
2c0cbef7 |
730 | subtype DateTime => as Object => where { $_->isa('DateTime') }; |
731 | |
732 | will I<Just Work>, while this: |
733 | |
734 | use DateTime; |
735 | subtype DateTime => as Object => where { $_->isa('DateTime') }; |
736 | |
e85d2a5d |
737 | will fail silently and cause many headaches. The simple way to solve |
738 | this, as well as future proof your subtypes from classes which have |
2c0cbef7 |
739 | yet to have been created yet, is to simply do this: |
740 | |
741 | use DateTime; |
d44714be |
742 | subtype 'DateTime' => as 'Object' => where { $_->isa('DateTime') }; |
2c0cbef7 |
743 | |
6ba6d68c |
744 | =head2 Default Type Constraints |
e522431d |
745 | |
004222dc |
746 | This module also provides a simple hierarchy for Perl 5 types, here is |
747 | that hierarchy represented visually. |
e522431d |
748 | |
749 | Any |
e85d2a5d |
750 | Item |
5a4c5493 |
751 | Bool |
7e4e1ad4 |
752 | Maybe[`a] |
f65cb534 |
753 | Undef |
754 | Defined |
5a4c5493 |
755 | Value |
756 | Num |
757 | Int |
758 | Str |
9af1d28b |
759 | ClassName |
5a4c5493 |
760 | Ref |
761 | ScalarRef |
7e4e1ad4 |
762 | ArrayRef[`a] |
763 | HashRef[`a] |
5a4c5493 |
764 | CodeRef |
765 | RegexpRef |
3f7376b0 |
766 | GlobRef |
0a5bd159 |
767 | FileHandle |
e85d2a5d |
768 | Object |
5a4c5493 |
769 | Role |
e522431d |
770 | |
4ab662d6 |
771 | B<NOTE:> Any type followed by a type parameter C<[`a]> can be |
7e4e1ad4 |
772 | parameterized, this means you can say: |
773 | |
774 | ArrayRef[Int] # an array of intergers |
775 | HashRef[CodeRef] # a hash of str to CODE ref mappings |
776 | Maybe[Str] # value may be a string, may be undefined |
777 | |
4ab662d6 |
778 | B<NOTE:> The C<Undef> type constraint for the most part works |
779 | correctly now, but edge cases may still exist, please use it |
7e4e1ad4 |
780 | sparringly. |
703e92fb |
781 | |
7e4e1ad4 |
782 | B<NOTE:> The C<ClassName> type constraint does a complex package |
4ab662d6 |
783 | existence check. This means that your class B<must> be loaded for |
784 | this type constraint to pass. I know this is not ideal for all, |
7e4e1ad4 |
785 | but it is a saner restriction than most others. |
9af1d28b |
786 | |
004222dc |
787 | =head2 Type Constraint Naming |
788 | |
789 | Since the types created by this module are global, it is suggested |
790 | that you namespace your types just as you would namespace your |
791 | modules. So instead of creating a I<Color> type for your B<My::Graphics> |
792 | module, you would call the type I<My::Graphics::Color> instead. |
793 | |
703e92fb |
794 | =head2 Use with Other Constraint Modules |
795 | |
e85d2a5d |
796 | This module should play fairly nicely with other constraint |
797 | modules with only some slight tweaking. The C<where> clause |
703e92fb |
798 | in types is expected to be a C<CODE> reference which checks |
004222dc |
799 | it's first argument and returns a boolean. Since most constraint |
e85d2a5d |
800 | modules work in a similar way, it should be simple to adapt |
703e92fb |
801 | them to work with Moose. |
802 | |
e85d2a5d |
803 | For instance, this is how you could use it with |
804 | L<Declare::Constraints::Simple> to declare a completely new type. |
703e92fb |
805 | |
e85d2a5d |
806 | type 'HashOfArrayOfObjects' |
703e92fb |
807 | => IsHashRef( |
808 | -keys => HasLength, |
809 | -values => IsArrayRef( IsObject )); |
810 | |
004222dc |
811 | For more examples see the F<t/200_examples/204_example_w_DCS.t> |
812 | test file. |
703e92fb |
813 | |
e85d2a5d |
814 | Here is an example of using L<Test::Deep> and it's non-test |
815 | related C<eq_deeply> function. |
703e92fb |
816 | |
e85d2a5d |
817 | type 'ArrayOfHashOfBarsAndRandomNumbers' |
703e92fb |
818 | => where { |
e85d2a5d |
819 | eq_deeply($_, |
703e92fb |
820 | array_each(subhashof({ |
821 | bar => isa('Bar'), |
822 | random_number => ignore() |
e85d2a5d |
823 | }))) |
703e92fb |
824 | }; |
825 | |
004222dc |
826 | For a complete example see the |
827 | F<t/200_examples/205_example_w_TestDeep.t> test file. |
e85d2a5d |
828 | |
a15dff8d |
829 | =head1 FUNCTIONS |
830 | |
831 | =head2 Type Constraint Constructors |
832 | |
e85d2a5d |
833 | The following functions are used to create type constraints. |
834 | They will then register the type constraints in a global store |
835 | where Moose can get to them if it needs to. |
a15dff8d |
836 | |
25f2c3fc |
837 | See the L<SYNOPSIS> for an example of how to use these. |
a15dff8d |
838 | |
6ba6d68c |
839 | =over 4 |
a15dff8d |
840 | |
6ba6d68c |
841 | =item B<type ($name, $where_clause)> |
a15dff8d |
842 | |
e85d2a5d |
843 | This creates a base type, which has no parent. |
a15dff8d |
844 | |
79592a54 |
845 | =item B<subtype ($name, $parent, $where_clause, ?$message)> |
182134e8 |
846 | |
e85d2a5d |
847 | This creates a named subtype. |
d6e2d9a1 |
848 | |
79592a54 |
849 | =item B<subtype ($parent, $where_clause, ?$message)> |
182134e8 |
850 | |
e85d2a5d |
851 | This creates an unnamed subtype and will return the type |
852 | constraint meta-object, which will be an instance of |
853 | L<Moose::Meta::TypeConstraint>. |
a15dff8d |
854 | |
620db045 |
855 | =item B<class_type ($class, ?$options)> |
3fef8ce8 |
856 | |
857 | Creates a type constraint with the name C<$class> and the metaclass |
858 | L<Moose::Meta::TypeConstraint::Class>. |
859 | |
620db045 |
860 | =item B<role_type ($role, ?$options)> |
861 | |
862 | Creates a type constraint with the name C<$role> and the metaclass |
863 | L<Moose::Meta::TypeConstraint::Role>. |
864 | |
fcec2383 |
865 | =item B<enum ($name, @values)> |
866 | |
e85d2a5d |
867 | This will create a basic subtype for a given set of strings. |
868 | The resulting constraint will be a subtype of C<Str> and |
4ce56d04 |
869 | will match any of the items in C<@values>. It is case sensitive. |
870 | See the L<SYNOPSIS> for a simple example. |
2c0cbef7 |
871 | |
e85d2a5d |
872 | B<NOTE:> This is not a true proper enum type, it is simple |
2c0cbef7 |
873 | a convient constraint builder. |
874 | |
9f4334a1 |
875 | =item B<enum (\@values)> |
876 | |
4ab662d6 |
877 | If passed an ARRAY reference instead of the C<$name>, C<@values> pair, |
9f4334a1 |
878 | this will create an unnamed enum. This can then be used in an attribute |
879 | definition like so: |
880 | |
881 | has 'sort_order' => ( |
882 | is => 'ro', |
4ab662d6 |
883 | isa => enum([qw[ ascending descending ]]), |
9f4334a1 |
884 | ); |
885 | |
6ba6d68c |
886 | =item B<as> |
a15dff8d |
887 | |
6ba6d68c |
888 | This is just sugar for the type constraint construction syntax. |
a15dff8d |
889 | |
6ba6d68c |
890 | =item B<where> |
a15dff8d |
891 | |
6ba6d68c |
892 | This is just sugar for the type constraint construction syntax. |
76d37e5a |
893 | |
894 | =item B<message> |
895 | |
896 | This is just sugar for the type constraint construction syntax. |
a15dff8d |
897 | |
8ecb1fa0 |
898 | =item B<optimize_as> |
899 | |
e85d2a5d |
900 | This can be used to define a "hand optimized" version of your |
d44714be |
901 | type constraint which can be used to avoid traversing a subtype |
e85d2a5d |
902 | constraint heirarchy. |
d44714be |
903 | |
e85d2a5d |
904 | B<NOTE:> You should only use this if you know what you are doing, |
905 | all the built in types use this, so your subtypes (assuming they |
d44714be |
906 | are shallow) will not likely need to use this. |
907 | |
6ba6d68c |
908 | =back |
a15dff8d |
909 | |
6ba6d68c |
910 | =head2 Type Coercion Constructors |
a15dff8d |
911 | |
e85d2a5d |
912 | Type constraints can also contain type coercions as well. If you |
913 | ask your accessor to coerce, then Moose will run the type-coercion |
914 | code first, followed by the type constraint check. This feature |
915 | should be used carefully as it is very powerful and could easily |
587ae0d2 |
916 | take off a limb if you are not careful. |
a15dff8d |
917 | |
25f2c3fc |
918 | See the L<SYNOPSIS> for an example of how to use these. |
a15dff8d |
919 | |
6ba6d68c |
920 | =over 4 |
a15dff8d |
921 | |
6ba6d68c |
922 | =item B<coerce> |
a15dff8d |
923 | |
6ba6d68c |
924 | =item B<from> |
a15dff8d |
925 | |
6ba6d68c |
926 | This is just sugar for the type coercion construction syntax. |
927 | |
928 | =item B<via> |
a15dff8d |
929 | |
6ba6d68c |
930 | This is just sugar for the type coercion construction syntax. |
a15dff8d |
931 | |
932 | =back |
933 | |
004222dc |
934 | =head2 Type Constraint Construction & Locating |
935 | |
936 | =over 4 |
937 | |
938 | =item B<create_type_constraint_union ($pipe_seperated_types | @type_constraint_names)> |
939 | |
940 | Given string with C<$pipe_seperated_types> or a list of C<@type_constraint_names>, |
941 | this will return a L<Moose::Meta::TypeConstraint::Union> instance. |
942 | |
943 | =item B<create_parameterized_type_constraint ($type_name)> |
944 | |
945 | Given a C<$type_name> in the form of: |
946 | |
947 | BaseType[ContainerType] |
948 | |
949 | this will extract the base type and container type and build an instance of |
950 | L<Moose::Meta::TypeConstraint::Parameterized> for it. |
951 | |
620db045 |
952 | =item B<create_class_type_constraint ($class, ?$options)> |
004222dc |
953 | |
954 | Given a class name it will create a new L<Moose::Meta::TypeConstraint::Class> |
955 | object for that class name. |
956 | |
620db045 |
957 | =item B<create_role_type_constraint ($role, ?$options)> |
958 | |
959 | Given a role name it will create a new L<Moose::Meta::TypeConstraint::Role> |
960 | object for that role name. |
961 | |
dabed765 |
962 | =item B<create_enum_type_constraint ($name, $values)> |
963 | |
620db045 |
964 | =item B<find_or_parse_type_constraint ($type_name)> |
004222dc |
965 | |
966 | This will attempt to find or create a type constraint given the a C<$type_name>. |
967 | If it cannot find it in the registry, it will see if it should be a union or |
620db045 |
968 | container type an create one if appropriate |
969 | |
970 | =item B<find_or_create_type_constraint ($type_name, ?$options_for_anon_type)> |
971 | |
972 | This function will first call C<find_or_parse_type_constraint> with the type name. |
973 | |
974 | If no type is found or created, but C<$options_for_anon_type> are provided, it |
975 | will create the corresponding type. |
976 | |
977 | This was used by the C<does> and C<isa> parameters to L<Moose::Meta::Attribute> |
978 | and are now superseded by C<find_or_create_isa_type_constraint> and |
979 | C<find_or_create_does_type_constraint>. |
980 | |
981 | =item B<find_or_create_isa_type_constraint ($type_name)> |
982 | |
983 | =item B<find_or_create_does_type_constraint ($type_name)> |
984 | |
985 | Attempts to parse the type name using L<find_or_parse_type_constraint> and if |
986 | no appropriate constraint is found will create a new anonymous one. |
987 | |
988 | The C<isa> variant will use C<create_class_type_constraint> and the C<does> |
989 | variant will use C<create_role_type_constraint>. |
004222dc |
990 | |
991 | =item B<find_type_constraint ($type_name)> |
992 | |
993 | This function can be used to locate a specific type constraint |
994 | meta-object, of the class L<Moose::Meta::TypeConstraint> or a |
995 | derivative. What you do with it from there is up to you :) |
996 | |
997 | =item B<register_type_constraint ($type_object)> |
998 | |
999 | This function will register a named type constraint with the type registry. |
1000 | |
1001 | =item B<get_type_constraint_registry> |
1002 | |
1003 | Fetch the L<Moose::Meta::TypeConstraint::Registry> object which |
1004 | keeps track of all type constraints. |
1005 | |
1006 | =item B<list_all_type_constraints> |
1007 | |
1008 | This will return a list of type constraint names, you can then |
1009 | fetch them using C<find_type_constraint ($type_name)> if you |
1010 | want to. |
1011 | |
1012 | =item B<list_all_builtin_type_constraints> |
1013 | |
1014 | This will return a list of builtin type constraints, meaning, |
1015 | those which are defined in this module. See the section |
1016 | labeled L<Default Type Constraints> for a complete list. |
1017 | |
1018 | =item B<export_type_constraints_as_functions> |
1019 | |
1020 | This will export all the current type constraints as functions |
1021 | into the caller's namespace. Right now, this is mostly used for |
1022 | testing, but it might prove useful to others. |
1023 | |
1024 | =item B<get_all_parameterizable_types> |
1025 | |
1026 | This returns all the parameterizable types that have been registered. |
1027 | |
1028 | =item B<add_parameterizable_type ($type)> |
1029 | |
1030 | Adds C<$type> to the list of parameterizable types |
1031 | |
1032 | =back |
1033 | |
571dd39f |
1034 | =head2 Namespace Management |
1035 | |
1036 | =over 4 |
1037 | |
1038 | =item B<unimport> |
1039 | |
e85d2a5d |
1040 | This will remove all the type constraint keywords from the |
571dd39f |
1041 | calling class namespace. |
1042 | |
1043 | =back |
1044 | |
a15dff8d |
1045 | =head1 BUGS |
1046 | |
e85d2a5d |
1047 | All complex software has bugs lurking in it, and this module is no |
a15dff8d |
1048 | exception. If you find a bug please either email me, or add the bug |
1049 | to cpan-RT. |
1050 | |
a15dff8d |
1051 | =head1 AUTHOR |
1052 | |
1053 | Stevan Little E<lt>stevan@iinteractive.comE<gt> |
1054 | |
1055 | =head1 COPYRIGHT AND LICENSE |
1056 | |
778db3ac |
1057 | Copyright 2006-2008 by Infinity Interactive, Inc. |
a15dff8d |
1058 | |
1059 | L<http://www.iinteractive.com> |
1060 | |
1061 | This library is free software; you can redistribute it and/or modify |
e85d2a5d |
1062 | it under the same terms as Perl itself. |
a15dff8d |
1063 | |
81dc201f |
1064 | =cut |