Type::Tiny::Class - type constraints based on the "isa" method |
Type::Tiny::Class - type constraints based on the ``isa'' method
This module is covered by the Type-Tiny stability policy.
Type constraints of the general form { $_->isa("Some::Class") }
.
This package inherits from the Type::Tiny manpage; see that for most documentation. Major differences are listed below:
new
my $type = Type::Tiny::Class->new(class => "Foo::Bar"); my $obj = $type->new(hello => "World"); say ref($obj); # prints "Foo::Bar"
This little bit of DWIM was borrowed from the MooseX::Types::TypeDecorator manpage, but Type::Tiny doesn't take the idea quite as far.
class
constraint
inlined
parent
plus_constructors($source, $method_name)
plus_coercions
but adds coercions that go via a constructor.
(In fact, this is implemented as a wrapper for plus_coercions
.)
Example:
package MyApp::Minion; use Moose; extends "MyApp::Person"; use Types::Standard qw( HashRef Str ); use Type::Utils qw( class_type ); my $Person = class_type({ class => "MyApp::Person" }); has boss => ( is => "ro", isa => $Person->plus_constructors( HashRef, "new", Str, "_new_from_name", ), coerce => 1, ); package main; MyApp::Minion->new( ..., boss => "Bob", ## via MyApp::Person->_new_from_name ); MyApp::Minion->new( ..., boss => { name => "Bob" }, ## via MyApp::Person->new );
Because coercing HashRef
via constructor is a common desire, if
you call plus_constructors
with no arguments at all, this is the
default.
$classtype->plus_constructors(Types::Standard::HashRef, "new") $classtype->plus_constructors() ## identical to above
This is handy for Moose/Mouse/Moo-based classes.
Please report any bugs to http://rt.cpan.org/Dist/Display.html.
the Type::Tiny::Manual manpage.
the Moose::Meta::TypeConstraint::Class manpage.
Toby Inkster <tobyink@cpan.org>.
This software is copyright (c) 2013-2014 by Toby Inkster.
This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.
THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
Type::Tiny::Class - type constraints based on the "isa" method |