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MooseX::Declare::Syntax::NamespaceHandling(3)tributed Perl Documentationeclare::Syntax::NamespaceHandling(3)



NAME
       MooseX::Declare::Syntax::NamespaceHandling - Handle namespaced blocks

DESCRIPTION
       Allows the implementation of namespaced blocks like the role and class keyword handlers.

       Namespaces are automatically nested. Meaning that, for example, a "class Bar" declaration inside
       another "class Foo" block gives the inner one actually the name "Foo::Bar".

METHODS
   parse
         Any Object->parse (Object $context)

       This is the main handling routine for namespaces. It will remove the namespace name and its options.
       If the handler was invoked without a name, options or a following block, it is assumed that this is
       an instance of an autoquoted bareword like "class =" "Foo">.

       The return value of the "parse" method is also the value that is returned to the user of the keyword.

CONSUMES
       •   MooseX::Declare::Syntax::KeywordHandling

       •   MooseX::Declare::Syntax::InnerSyntaxHandling

REQUIRED METHODS
   handle_missing_block
         Object->handle_missing_block (Object $context, Str $body, %args)

       This must be implemented to decide what to do in case the statement is terminated rather than
       followed by a block. It will receive the context object, the produced code that needs to be injected,
       and all the arguments that were passed to the call to "inject_code_parts" in
       MooseX::Declare::Context.

       The return value will be ignored.

EXTENDABLE STUB METHODS
   add_namespace_customizations
   add_optional_customizations
         Object->add_namespace_customizations (Object $context, Str $package, HashRef $options)
         Object->add_optional_customizations  (Object $context, Str $package, HashRef $options)

       These will be called (in this order) by the "parse" method. They allow specific hooks to attach
       before/after/around the customizations for the namespace and the provided options that are not
       attached to the namespace directly.

       While this distinction might seem superficial, we advise library developers faciliating this role to
       follow the precendent. This ensures that when another component needs to tie between the namspace and
       any additional customizations everythign will run in the correct order. An example of this separation
       would be

         class Foo is mutable ...

       being an option of the namespace generation, while

         class Foo with Bar ...

       is an additional optional customization.

   handle_post_parsing
         Object->handle_post_parsing (Object $context, Str $package, Str | Object $name)

       Allows for additional modifications to te namespace after everything else has been done. It will
       receive the context, the fully qualified package name, and either a string with the name that was
       specified (might not be fully qualified, since namespaces can be nested) or the anonymous metaclass
       instance if no name was specified.

       The return value of this method will be the value returned to the user of the keyword. If you always
       return the $package argument like this:

         sub handle_post_parsing {
             my ($self, $context, $package, $name) = @_;
             return $package;
         }

       and set this up in a "foo" keyword handler, you can use it like this:

         foo Cthulhu {

             my $fhtagn = foo Fhtagn { }
             my $anon   = foo { };

             say $fhtagn;  # Cthulhu::Fhtagn
             say $anon;    # some autogenerated package name
         }

   make_anon_metaclass
         Class::MOP::Class Object->make_anon_metaclass ()

       This method should be overridden if you want to provide anonymous namespaces.

       It does not receive any arguments for customization of the metaclass, because the configuration and
       customization will be done by MooseX::Declare in the package of the generated class in the same way
       as in those that have specified names. This way ensures that anonymous and named namespaces are
       always handled equally.

       If you do not extend this method (it will return nothing by default), an error will be thrown when a
       user attempts to declare an anonymous namespace.

SEE ALSO
       •   MooseX::Declare

       •   MooseX::Declare::Syntax::MooseSetup

AUTHORS
       •   Florian Ragwitz <rafl@debian.org>

       •   Ash Berlin <ash@cpan.org>

       •   Chas. J. Owens IV <chas.owens@gmail.com>

       •   Chris Prather <chris@prather.org>

       •   Dave Rolsky <autarch@urth.org>

       •   Devin Austin <dhoss@cpan.org>

       •   Hans Dieter Pearcey <hdp@cpan.org>

       •   Justin Hunter <justin.d.hunter@gmail.com>

       •   Matt Kraai <kraai@ftbfs.org>

       •   Michele Beltrame <arthas@cpan.org>

       •   Nelo Onyiah <nelo.onyiah@gmail.com>

       •   nperez <nperez@cpan.org>

       •   Piers Cawley <pdcawley@bofh.org.uk>

       •   Rafael Kitover <rkitover@io.com>

       •   Robert 'phaylon' Sedlacek <rs@474.at>

       •   Stevan Little <stevan.little@iinteractive.com>

       •   Tomas Doran <bobtfish@bobtfish.net>

       •   Yanick Champoux <yanick@babyl.dyndns.org>

COPYRIGHT AND LICENSE
       This software is copyright (c) 2011 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.



perl v5.12.5                                     2011-08-23    MooseX::Declare::Syntax::NamespaceHandling(3)