NAME

MooseX::Meta::TypeConstraint::Intersection - An intersection of Moose type constraints

VERSION

version 0.03

DESCRIPTION

This class represents an intersection of type constraints. An intersection takes multiple type constraints, and is true if all of its member constraints are true.

INHERITANCE

MooseX::Meta::TypeConstraint::Intersection is a subclass of Moose::Meta::TypeConstraint.

ATTRIBUTES

type_constraints

The member type constraints of this intersection.

METHODS

new(%options)

This creates a new intersection type constraint based on the given %options.

It takes the same options as its parent. It also requires an additional option, type_constraints. This is an array reference containing the Moose::Meta::TypeConstraint objects that are the members of the intersection type. The name option defaults to the names of all of these member types sorted and then joined by an ampersand (&).

check($value)

Checks a $value against the intersection constraint. If all member constraints accept the value, the value is valid and something true is returned.

equals($other_constraint)

A type is considered equal if it is also an intersection type, and the two intersections have the same member types.

parents

This returns the same constraint as the type_constraints method.

validate($value)

Like check, but returns an error message including all of the error messages returned by the member constraints, or undef.

validate_all($value)

Same as validate, but returns an array reference of tuples with error messages and the type constraints that produced them from the individual validation errors instead of a plain string with the errors concatenated.

is_subtype_of($other_constraint)

This returns true if the $other_constraint is also an intersection constraint and contains at least all of the member constraints of the intersection this method is called on.

THANKS

Ionzero LLC (http://ionzero.com) for sponsoring the initial development.

AUTHOR

Florian Ragwitz <rafl@debian.org>

COPYRIGHT AND LICENSE

This software is copyright (c) 2010 by Florian Ragwitz.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

cpanm MooseX::Meta::TypeConstraint::Intersection

perl -MCPAN -e shell
install MooseX::Meta::TypeConstraint::Intersection