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Class::MakeMethods::Attribute.3pm
Langue: en
Version: 2004-09-06 (debian - 07/07/09)
Section: 3 (Bibliothèques de fonctions)
NAME
Class::MakeMethods::Attribute - Declare generated subs with attribute syntaxSYNOPSIS
package MyObject; use Class::MakeMethods::Attribute 'Standard::Hash';
sub new :MakeMethod('new'); sub foo :MakeMethod('scalar'); sub bar :MakeMethod('scalar', { hashkey => 'bar_data' }); sub debug :MakeMethod('Standard::Global:scalar');
DESCRIPTION
This package allows common types of methods to be generated via a subroutine attribute declaration. (Available in Perl 5.6 and later.)Adding the :MakeMethod() attribute to a subroutine declaration causes Class::MakeMethods to create and install a subroutine based on the parameters given to the :MakeMethod attribute.
You can declare a default method-generation class by passing the name of a MakeMethods subclass in the use Class::MakeMethods::Attribute statement. This default method-generation class will also apply as the default to any subclasses declared at compile time. If no default method-generation class is selected, you will need to fully-qualify all method type declarations.
EXAMPLE
Here's a typical use of Class::MakeMethods::Attribute:package MyObject; use Class::MakeMethods::Attribute 'Standard::Hash';
sub new :MakeMethod('new'); sub foo :MakeMethod('scalar'); sub bar :MakeMethod('scalar', { hashkey => 'bar_data' }); sub debug :MakeMethod('Standard::Global:scalar');
package MySubclass; use base 'MyObject';
sub bazzle :MakeMethod('scalar');
This is equivalent to the following explicit Class::MakeMethods invocations:
package MyObject;
use Class::MakeMethods ( -MakerClass => 'Standard::Hash', new => 'new', scalar => 'foo', scalar => [ 'ba', { hashkey => 'bar_data' } ], 'Standard::Global:scalar' => 'debug', );
package MySubclass; use base 'MyObject';
use Class::MakeMethods ( -MakerClass => 'Standard::Hash', scalar => 'bazzle', );
DIAGNOSTICS
The following warnings and errors may be produced when using Class::MakeMethods::Attribute to generate methods. (Note that this list does not include run-time messages produced by calling the generated methods, or the standard messages produced by Class::MakeMethods.)- Can't apply MakeMethod attribute to %s declaration.
- You can not use the ":MakeMethod" attribute with lexical or anonymous subroutine declarations.
- No method type provided for MakeMethod attribute.
- You called ":MakeMethod()" without the required method-type argument.
SEE ALSO
See Attribute::Handlers byÊDamian Conway.See Class::MakeMethods for general information about this distribution.
Contenus ©2006-2024 Benjamin Poulain
Design ©2006-2024 Maxime Vantorre