MooseX::Meta::TypeConstraint::Structured(3p)

NAME
MooseX::Meta::TypeConstraint::Structured - Structured type constraints

VERSION
version 0.36

DESCRIPTION
A structure is a set of Moose::Meta::TypeConstraint that are 'aggregated' in such a way as that they are all applied to an incoming list of arguments. The idea here is that a Type Constraint could be something like, "An "Int" followed by an "Int" and then a "Str"" and that this could be done so with a declaration like:

    Tuple[Int,Int,Str]; ## Example syntax

So a structure is a list of type constraints (the "Int,Int,Str" in the above example) which are intended to function together.

ATTRIBUTES

  type_constraints
A list of Moose::Meta::TypeConstraint objects.

  constraint_generator

METHODS

  validate
Messing with validate so that we can support nicer error messages.

  generate_constraint_for ($type_constraints)
Given some type constraints, use them to generate validation rules for an ref of values (to be passed at check time)

  parameterize (@type_constraints)
Given a ref of type constraints, create a structured type.

  __infer_constraint_generator

  compile_type_constraint
hook into compile_type_constraint so we can set the correct validation rules.

  create_child_type
modifier to make sure we get the constraint_generator

  is_a_type_of

  is_subtype_of

  equals
Override the base class behavior.

  type_constraints_equals
Checks to see if the internal type constraints are equal.

  get_message
Give you a better peek into what's causing the error. For now we stringify the incoming deep value with Devel::PartialDump and pass that on to either your custom error message or the default one. In the future we'll try to provide a more complete stack trace of the actual offending elements

A subref or closure that contains the way we validate incoming values against a set of type constraints.

This returns a CODEREF which generates a suitable constraint generator. Not user servicable, you'll never call this directly.

SEE ALSO
The following modules or resources may be of interest.

Moose, Moose::Meta::TypeConstraint

SUPPORT
Bugs may be submitted through the RT bug tracker <https://rt.cpan.org/Public/Dist/Display.html?Name=MooseX-Types-Structured> (or bug-MooseX-Types-Structured@rt.cpan.org <mailto:bug-MooseX-Types-Structured@rt.cpan.org>).

There is also a mailing list available for users of this distribution, at <http://lists.perl.org/list/moose.html>.

There is also an irc channel available for users of this distribution, at "#moose" on "irc.perl.org" <irc://irc.perl.org/#moose>.

AUTHORS

•   John Napiorkowski <jjnapiork@cpan.org>

•   Florian Ragwitz <rafl@debian.org>

•   יובל קוג'מן (Yuval Kogman) <nothingmuch@woobling.org>

•   Tomas (t0m) Doran <bobtfish@bobtfish.net>

•   Robert Sedlacek <rs@474.at>

COPYRIGHT AND LICENSE
This software is copyright (c) 2008 by John Napiorkowski.

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