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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/InsideOut.pm
parent9c6c30350161efd74faa3c3705096aecb71c0e81 (diff)
downloadxxv-cfdd733c17cfa4f1a43b827a656e9e53cc2524ac.tar.gz
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* Remove unsed packages
* Reorder exit routines
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diff --git a/lib/Class/MakeMethods/Template/InsideOut.pm b/lib/Class/MakeMethods/Template/InsideOut.pm
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-package Class::MakeMethods::Template::InsideOut;
-
-use Class::MakeMethods::Template::Generic '-isasubclass';
-
-$VERSION = 1.008;
-use strict;
-require 5.0;
-
-my %ClassInfo;
-my %Data;
-
-sub generic {
- {
- '-import' => {
- 'Template::Generic:generic' => '*'
- },
- 'code_expr' => {
- '_VALUE_' => '_ATTR_{data}->{_SELF_}',
- },
- 'behavior' => {
- -register => [ sub {
- my $m_info = shift;
- my $class_info = ( $ClassInfo{$m_info->{target_class}} ||= [] );
- return (
- 'DESTROY' => sub {
- my $self = shift;
- foreach ( @$class_info ) { delete $self->{data}->{$self} }
- # $self->SUPER::DESTROY( @_ )
- },
- );
- } ],
- }
- }
-}
-
-########################################################################
-
-=head1 NAME
-
-Class::MakeMethods::Template::InsideOut - External data
-
-=head1 SYNOPSIS
-
- package MyObject;
- use Class::MakeMethods::Template::InsideOut (
- scalar => [ 'foo', 'bar' ]
- );
- sub new { ... }
-
- package main;
-
- my $obj = MyObject->new( foo => "Foozle", bar => "Bozzle" );
- print $obj->foo(); # Prints Foozle
- $obj->bar("Bamboozle"); # Sets $obj's bar value
-
-=head1 DESCRIPTION
-
-Supports the Generic object constructor and accessors meta-method
-types, but accepts any object as the underlying implementation type,
-with member data stored in external indices.
-
-Each method stores the values associated with various objects in
-an hash keyed by the object's stringified identity. Since that hash
-is accessible only from the generated closures, it is impossible
-for foreign code to manipulate those values except through the
-method interface.
-
-A DESTROY method is installed to remove data for expired objects
-from the various hashes. (If the DESTROY method is not called, your
-program will not release this data and memory will be wasted.)
-
-B<Common Parameters>: The following parameters are defined for
-InsideOut meta-methods.
-
-=over 4
-
-=item data
-
-An auto-vivified reference to a hash to be used to store the values
-for each object.
-
-=back
-
-Note that using InsideOut meta-methods causes the installation of
-a DESTROY method in the calling class, which deallocates data for
-each instance when it is discarded.
-
-NOTE: This needs some more work to properly handle inheritance.
-
-=head2 Standard Methods
-
-The following methods from Generic are all 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.
-
-=cut
-
-########################################################################
-
-=head2 boolean_index
-
- boolean_index => [ qw / foo bar baz / ]
-
-Like InsideOut:boolean, boolean_index creates x, set_x, and clear_x
-methods. However, it also defines a class method find_x which returns
-a list of the objects which presently have the x-flag set to
-true.
-
-Note that to free items from memory, you must clear these bits!
-
-=cut
-
-sub boolean_index {
- {
- '-import' => {
- 'Template::Generic:boolean' => '*',
- },
- 'interface' => {
- default => {
- '*'=>'get_set', 'set_*'=>'set_true', 'clear_*'=>'set_false',
- 'find_*'=>'find_true',
- },
- },
- 'behavior' => {
- '-init' => [ sub {
- my $m_info = $_[0];
- defined $m_info->{data} or $m_info->{data} = {};
- return;
- } ],
- 'set_true' => q{ _SET_VALUE_{ _SELF_ } },
- 'set_false' => q{ delete _VALUE_; 0 },
- 'find_true' => q{
- values %{ _ATTR_{data} };
- },
- },
- }
-}
-
-sub string_index {
- {
- '-import' => {
- 'Template::Generic:string_index' => '*',
- },
- 'interface' => {
- default => {
- '*'=>'get_set', 'set_*'=>'set_true', 'clear_*'=>'set_false',
- 'find_*'=>'find_true',
- },
- },
- 'code_expr' => {
- _INDEX_HASH_ => '_ATTR_{data}',
- _GET_FROM_INDEX_ => q{
- if (defined ( my $old_v = _GET_VALUE_ ) ) {
- delete _ATTR_{'data'}{ $old_v };
- }
- },
- _REMOVE_FROM_INDEX_ => q{
- if (defined ( my $old_v = _GET_FROM_INDEX_ ) ) {
- delete _ATTR_{'data'}{ $old_v };
- }
- },
- _ADD_TO_INDEX_{} => q{
- if (defined ( my $new_value = _GET_VALUE_ ) ) {
- if ( my $old_item = _ATTR_{'data'}{$new_value} ) {
- # There's already an object stored under that value so we
- # need to unset it's value.
- # And maybe issue a warning? Or croak?
- my $m_name = _ATTR_{'name'};
- $old_item->$m_name( undef );
- }
-
- # Put ourself in the index under that value
- _ATTR_{'data'}{ * } = _SELF_;
- }
- },
- },
- 'behavior' => {
- '-init' => [ sub {
- my $m_info = $_[0];
- defined $m_info->{data} or $m_info->{data} = {};
- return;
- } ],
- 'get' => q{
- return _GET_FROM_INDEX_;
- },
- 'set' => q{
- my $new_value = shift;
- _REMOVE_FROM_INDEX_
- _ADD_TO_INDEX_{ $new_value }
- },
- 'clear' => q{
- _REMOVE_FROM_INDEX_
- },
- },
- }
-}
-
-########################################################################
-
-1;