/usr/share/perl5/Class/MakeMethods/Template/InsideOut.pm is in libclass-makemethods-perl 1.01-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 | 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;
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