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MooseX-Types-Structured-0.36
River stage three • 43 direct dependents • 172 total dependents
8 ++
/ MooseX::Meta::TypeConstraint::Structured

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 (or 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.

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.