Type::Registry - Online Linux Manual PageSection : 3pm
Updated : 2021-02-24
Source : perl v5.32.1
Note : User Contributed Perl Documentation
NAMEType::Registry − a glorified hashref for looking up type constraints
SYNOPSIS​ package Foo::Bar; ​ ​ use Type::Registry; ​ ​ my $reg = "Type::Registry"−>for_me; # a registry for Foo::Bar ​ ​ # Register all types from Types::Standard ​ $reg−>add_types(−Standard); ​ ​ # Register just one type from Types::XSD ​ $reg−>add_types(−XSD => ["NonNegativeInteger"]); ​ ​ # Register all types from MyApp::Types ​ $reg−>add_types("MyApp::Types"); ​ ​ # Create a type alias ​ $reg−>alias_type("NonNegativeInteger" => "Count"); ​ ​ # Look up a type constraint ​ my $type = $reg−>lookup("ArrayRef[Count]"); ​ ​ $type−>check([1, 2, 3.14159]); # croaks Alternatively: ​ package Foo::Bar; ​ ​ use Type::Registry qw( t ); ​ ​ # Register all types from Types::Standard ​ t−>add_types(−Standard); ​ ​ # Register just one type from Types::XSD ​ t−>add_types(−XSD => ["NonNegativeInteger"]); ​ ​ # Register all types from MyApp::Types ​ t−>add_types("MyApp::Types"); ​ ​ # Create a type alias ​ t−>alias_type("NonNegativeInteger" => "Count"); ​ ​ # Look up a type constraint ​ my $type = t("ArrayRef[Count]"); ​ ​ $type−>check([1, 2, 3.14159]); # croaks
STATUSThis module is covered by the Type-Tiny stability policy.
DESCRIPTIONA type registry is basically just a hashref mapping type names to type constraint objects.
Constructorsnew Create a new glorified hashref. for_class($class) Create or return the existing glorified hashref associated with the given class. Note that any type constraint you have imported from Type::Library−based type libraries will be automatically available in your class' registry. for_me Create or return the existing glorified hashref associated with the caller.
Methodsadd_types(@libraries) The libraries list is treated as an ‟optlist” (a la Data::OptList). Strings are the names of type libraries; if the first character is a hyphen, it is expanded to the ‟Types::” prefix. If followed by an arrayref, this is the list of types to import from that library. Otherwise, imports all types from the library. ​ use Type::Registry qw(t); ​ ​ t−>add_types(−Standard); # OR: t−>add_types("Types::Standard"); ​ ​ t−>add_types( ​ −TypeTiny => ['HashLike'], ​ −Standard => ['HashRef' => { −as => 'RealHash' }], ​ ); MooseX::Types (and experimentally, MouseX::Types) libraries can also be added this way, but cannot be followed by an arrayref of types to import. add_type($type, $name) The long-awaited singular form of add_types. Given a type constraint object, adds it to the registry with a given name. The name may be omitted, in which case $type−>name is called, and Type::Registry will throw an error if $type is anonymous. If a name is explicitly given, Type::Registry cares not one wit whether the type constraint is anonymous. This method can even add MooseX::Types and MouseX::Types type constraints; indeed anything that can be handled by Types::TypeTiny's ​to_TypeTiny function. (Bear in mind that to_TypeTiny always results in an anonymous type constraint, so $name will be required.) alias_type($oldname, $newname) Create an alias for an existing type. simple_lookup($name) Look up a type in the registry by name. Returns undef if not found. foreign_lookup($name) Like simple_lookup, but if the type name contains ‟::”, will attempt to load it from a type library. (And will attempt to load that module.) lookup($name) Look up by name, with a DSL. ​ t−>lookup("Int|ArrayRef[Int]") The DSL can be summed up as: ​ X type from this registry ​ My::Lib::X type from a type library ​ ~X complementary type ​ X | Y union ​ X & Y intersection ​ X[...] parameterized type ​ slurpy X slurpy type ​ Foo::Bar:: class type Croaks if not found. make_union(@constraints), make_intersection(@constraints), make_class_type($class), make_role_type($role) Convenience methods for creating certain common type constraints. AUTOLOAD Overloaded to call lookup. ​ $registry−>Str; # like $registry−>lookup("Str") get_parent, set_parent($reg), clear_parent, has_parent Advanced stuff. Allows a registry to have a ‟parent” registry which it inherits type constraints from.
Functionst This class can export a function t which acts like ​"Type::Registry"−>for_class($importing_class).
BUGSPlease report any bugs to <https://github.com/tobyink/p5−type−tiny/issues>.
SEE ALSOType::Library.
AUTHORToby Inkster <tobyink@cpan.org>.
COPYRIGHT AND LICENCEThis software is copyright (c) 2013−2014, 2017−2021 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.
DISCLAIMER OF WARRANTIES​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. 0
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