Class::MakeMethods::Autoload - Declare generated subs with AUTOLOAD |
Class::MakeMethods::Autoload - Declare generated subs with AUTOLOAD
package MyObject; use Class::MakeMethods::Autoload 'Standard::Hash::scalar'; package main; my $obj = bless {}, 'MyObject'; $obj->foo("Foozle"); print $obj->foo();
This package provides a generate-on-demand interface to Class::MakeMethods.
When your class uses this package, it imports an AUTOLOAD function that resolves missing methods by using Class::MakeMethods to generate and install a standard type of method.
You must specify the type of method to be generated by passing a single argument to your use Class::MakeMethods::Autoload statement, which can take any of these forms:
Here are three examples:
use Class::MakeMethods::Autoload 'Standard::Hash:scalar'; use Class::MakeMethods::Autoload 'Basic::Universal::no_op'; use Class::MakeMethods::Autoload '::Class::MakeMethod::Composite::Global:array';A reference to a subroutine which will be called for each requested function name and which is expected to return the name of the method generator to use.
Here's a contrived example which generates scalar accessors for methods except those with a digit in their name, which are treated as globals.
use Class::MakeMethods::Autoload sub { my $name = shift; ( $name =~ /\d/ ) ? 'Standard::Global::scalar' : 'Standard::Hash::scalar' };A reference to a hash which defines which method type to use based on the name of the requested method. If a key exists which is an exact match for the requested function name, the associated value is used; otherwise, each of the keys is used as a regular expression, and the value of the first one that matches the function name is used. (For regular expression matching, the keys are tested in reverse length order, longest to shortest.)
Here's an example which provides a new()
constructor, a DESTROY()
method that does nothing, and a wildcard match that provides scalar accessors for all other Autoloaded methods:
use Class::MakeMethods::Autoload { 'new' => 'Standard::Hash::new', '.*' => 'Standard::Hash::scalar', 'DESTROY' => 'Standard::Universal::no_op', };
Here's a more sophisticated example which causes all-upper-case method names to be generated as globals, those with a leading upper-case letter to be generated as inheritable data methods, and others to be normal accessors:
use Class::MakeMethods::Autoload { 'new' => 'Standard::Hash::new', '.*' => 'Standard::Hash::scalar', '[A-Z].*' => 'Standard::Inheritable::scalar', '[A-Z0-9]+' => 'Standard::Global::scalar', 'DESTROY' => 'Standard::Universal::no_op', };
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.)
use Class::MakeMethods::Autoload
statement, prior to
autoloading any methods.
See the Class::MakeMethods manpage for general information about this distribution.
For distribution, installation, support, copyright and license information, see the Class::MakeMethods::Docs::ReadMe manpage.
Class::MakeMethods::Autoload - Declare generated subs with AUTOLOAD |