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authorAndreas Brachold <vdr07@deltab.de>2007-11-10 17:53:53 +0000
committerAndreas Brachold <vdr07@deltab.de>2007-11-10 17:53:53 +0000
commitcfdd733c17cfa4f1a43b827a656e9e53cc2524ac (patch)
treeb6f659b1281f77628b36768f0888f67b65f9ca48 /lib/Class/MakeMethods/Template/Inheritable.pm
parent9c6c30350161efd74faa3c3705096aecb71c0e81 (diff)
downloadxxv-cfdd733c17cfa4f1a43b827a656e9e53cc2524ac.tar.gz
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* Remove unsed packages
* Reorder exit routines
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-=head1 NAME
-
-Class::MakeMethods::Template::Inheritable - Overridable data
-
-=head1 SYNOPSIS
-
- package MyClass;
-
- use Class::MakeMethods( 'Template::Inheritable:scalar' => 'foo' );
- # We now have an accessor method for an "inheritable" scalar value
-
- MyClass->foo( 'Foozle' ); # Set a class-wide value
- print MyClass->foo(); # Retrieve class-wide value
-
- my $obj = MyClass->new(...);
- print $obj->foo(); # All instances "inherit" that value...
-
- $obj->foo( 'Foible' ); # until you set a value for an instance.
- print $obj->foo(); # This now finds object-specific value.
- ...
-
- package MySubClass;
- @ISA = 'MyClass';
-
- print MySubClass->foo(); # Intially same as superclass,
- MySubClass->foo('Foobar'); # but overridable per subclass,
- print $subclass_obj->foo(); # and shared by its instances
- $subclass_obj->foo('Fosil');# until you override them...
- ...
-
-=head1 DESCRIPTION
-
-The MakeMethods subclass provides accessor methods that search an inheritance tree to find a value. This allows you to set a shared or default value for a given class, and optionally override it in a subclass.
-
-=cut
-
-########################################################################
-
-package Class::MakeMethods::Template::Inheritable;
-
-use Class::MakeMethods::Template::Generic '-isasubclass';
-
-$VERSION = 1.008;
-use strict;
-require 5.0;
-use Carp;
-
-sub generic {
- {
- '-import' => {
- 'Template::Generic:generic' => '*'
- },
- 'modifier' => {
- '-all' => [ q{
- _INIT_VALUE_CLASS_
- *
- } ],
- },
- 'code_expr' => {
- '_VALUE_CLASS_' => '$_value_class',
- '_INIT_VALUE_CLASS_' => q{
- my _VALUE_CLASS_;
- my @_INC_search = ( _SELF_, _SELF_CLASS_ );
- while ( scalar @_INC_search ) {
- _VALUE_CLASS_ = shift @_INC_search;
- last if ( exists _ATTR_{data}->{_VALUE_CLASS_} );
- no strict 'refs';
- unshift @_INC_search, @{"_VALUE_CLASS_\::ISA"} if ! ref _VALUE_CLASS_;
- }
- },
- '_VALUE_' => '_ATTR_{data}->{_VALUE_CLASS_}',
- '_GET_VALUE_' => q{ _ATTR_{data}->{_VALUE_CLASS_} },
- '_SET_VALUE_{}' => q{ do { my $data = *; defined($data) ? ( _VALUE_CLASS_ = _SELF_ and _ATTR_{data}->{_SELF_} = $data ) : ( delete _ATTR_{data}->{_SELF_} and undef ) } },
- },
- }
-}
-
-########################################################################
-
-=head2 Standard Methods
-
-The following methods from Generic should be supported:
-
- scalar
- string
- string_index (?)
- number
- boolean (?)
- bits (?)
- array (?)
- hash (?)
- tiedhash (?)
- hash_of_arrays (?)
- object (?)
- instance (?)
- array_of_objects (?)
- code (?)
- code_or_scalar (?)
-
-See L<Class::MakeMethods::Template::Generic> for the interfaces and behaviors of these method types.
-
-The items marked with a * above are specifically defined in this package, whereas the others are formed automatically by the interaction of this package's generic settings with the code templates provided by the Generic superclass.
-
-The items marked with a ? above have not been tested sufficiently; please inform the author if they do not function as you would expect.
-
-=cut
-
-sub array {
- {
- '-import' => {
- 'Template::Generic:array' => '*',
- },
- 'modifier' => {
- '-all' => q{ _INIT_VALUE_CLASS_; _ENSURE_REF_VALUE_; * },
- },
- 'code_expr' => {
- '_ENSURE_REF_VALUE_' => q{ _VALUE_ ||= []; },
- '_REF_VALUE_' => '(\@{_ATTR_{data}->{_VALUE_CLASS_}})',
- },
- }
-}
-
-sub hash {
- {
- '-import' => {
- 'Template::Generic:hash' => '*',
- },
- 'modifier' => {
- '-all' => q{ _INIT_VALUE_CLASS_; _ENSURE_REF_VALUE_; * },
- },
- 'code_expr' => {
- '_ENSURE_REF_VALUE_' => q{ _VALUE_ ||= {}; },
- '_REF_VALUE_' => '(\%{_ATTR_{data}->{_VALUE_CLASS_}})',
- },
- }
-}
-
-########################################################################
-
-=head1 SEE ALSO
-
-See L<Class::MakeMethods> for general information about this distribution.
-
-See L<Class::MakeMethods::Template> for more about this family of subclasses.
-
-See L<Class::MakeMethods::Template::Generic> for information about the various accessor interfaces subclassed herein.
-
-If you just need scalar accessors, see L<Class::Data::Inheritable> for a very elegant and efficient implementation.
-
-=cut
-
-########################################################################
-
-1;