/usr/share/perl5/Class/Std/Fast/Storable.pm is in libclass-std-fast-perl 0.0.8-2.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 | package Class::Std::Fast::Storable;
use version; $VERSION = qv('0.0.8');
use strict;
use warnings;
use Carp;
use Storable;
BEGIN {
require Class::Std::Fast;
}
my $attributes_of_ref = {};
my @exported_subs = qw(
Class::Std::Fast::ident
Class::Std::Fast::DESTROY
Class::Std::Fast::MODIFY_CODE_ATTRIBUTES
Class::Std::Fast::AUTOLOAD
Class::Std::Fast::_DUMP
STORABLE_freeze
STORABLE_thaw
MODIFY_HASH_ATTRIBUTES
);
sub import {
my $caller_package = caller;
my %flags = (@_>=3)
? @_[1..$#_]
: (@_==2) && $_[1] >=2
? ( constructor => 'basic', cache => 0 )
: ( constructor => 'normal', cache => 0);
$flags{cache} = 0 if not defined $flags{cache};
$flags{constructor} = 'normal' if not defined $flags{constructor};
Class::Std::Fast::_init_import(
$caller_package, %flags
);
no strict qw(refs);
for my $name ( @exported_subs ) {
my ($sub_name) = $name =~ m{(\w+)\z}xms;
*{ $caller_package . '::' . $sub_name } = \&{$name};
}
}
sub MODIFY_HASH_ATTRIBUTES {
my $caller_package = $_[0];
my @unhandled = Class::Std::Fast::MODIFY_HASH_ATTRIBUTES(@_);
my $i = 0;
$attributes_of_ref->{$caller_package} = {
map {
$_->{name} eq '????' ? '????_' . $i++ : $_->{name}
=> $_->{ref};
} @{Class::Std::Fast::_get_internal_attributes($caller_package) || []}
};
return @unhandled;
}
# It's a constant - so there's no use creating it in each freeze again
my $FROZEN_ANON_SCALAR = Storable::freeze(\(my $anon_scalar));
sub STORABLE_freeze {
# TODO do we really need to unpack @_? We're getting called for
# Zillions of objects...
my($self, $cloning) = @_;
Class::Std::Fast::real_can($self, 'STORABLE_freeze_pre')
&& $self->STORABLE_freeze_pre($cloning);
my %frozen_attr; #to be constructed
my $id = ${$self};
my @package_list = ref $self;
my %package_seen = ( $package_list[0] => 1 ); # ignore diamond/looped base classes :-)
no strict qw(refs);
PACKAGE:
while( my $package = shift @package_list) {
#make sure we add any base classes to the list of
#packages to examine for attributes.
# Original line:
# push @package_list, grep { ! $package_seen{$_}++; } @{"${package}::ISA"};
# This one's faster...
push @package_list, grep { ! exists $package_seen{$_} && do { $package_seen{$_} = undef; 1; } } @{"${package}::ISA"};
#look for any attributes of this object for this package
my $attr_ref = $attributes_of_ref->{$package} or next PACKAGE;
# TODO replace inner my variable by $_ - faster...
ATTR: # examine attributes from known packages only
for ( keys %{$attr_ref} ) {
#nothing to do if attr not set for this object
exists $attr_ref->{$_}{$id}
and $frozen_attr{$package}{ $_ } = $attr_ref->{$_}{$id}; # save the attr by name into the package hash
}
}
Class::Std::Fast::real_can($self, 'STORABLE_freeze_post')
&& $self->STORABLE_freeze_post($cloning, \%frozen_attr);
return ($FROZEN_ANON_SCALAR, \%frozen_attr);
}
sub STORABLE_thaw {
# croak "must be called from Storable" unless caller eq 'Storable';
# unfortunately, Storable never appears on the call stack.
# TODO do we really need to unpack @_? We're getting called for
# zillions of objects...
my $self = shift;
my $cloning = shift;
my $frozen_attr_ref = $_[1]; # $_[0] is the frozen anon scalar.
Class::Std::Fast::real_can($self, 'STORABLE_thaw_pre')
&& $self->STORABLE_thaw_pre($cloning, $frozen_attr_ref);
my $id = ${$self} ||= Class::Std::Fast::ID();
PACKAGE:
while( my ($package, $pkg_attr_ref) = each %{$frozen_attr_ref} ) {
# TODO This test is quite expensive. Is there a better one?
$self->isa($package)
or croak "unknown base class '$package' seen while thawing "
. ref $self;
ATTR:
for ( keys %{$attributes_of_ref->{$package}} ) {
# for known attrs...
# nothing to do if frozen attr doesn't exist
exists $pkg_attr_ref->{$_} or next ATTR;
# block attempts to meddle with existing objects
exists $attributes_of_ref->{$package}->{$_}->{$id}
and croak "trying to modify existing attributes for $package";
# ok, set the attribute
$attributes_of_ref->{$package}->{$_}->{$id}
= delete $pkg_attr_ref->{$_};
}
# this is probably serious enough to throw an exception.
# however, TODO: it would be nice if the class could somehow
# indicate to ignore this problem.
%$pkg_attr_ref
and croak "unknown attribute(s) seen while thawing class $package:"
. join q{, }, keys %$pkg_attr_ref;
}
Class::Std::Fast::real_can($self, 'STORABLE_thaw_post')
&& $self->STORABLE_thaw_post($cloning);
}
1;
__END__
=pod
=head1 NAME
Class::Std::Fast::Storable - Fast Storable InsideOut objects
=head1 VERSION
This document describes Class::Std::Fast::Storable 0.0.8
=head1 SYNOPSIS
package MyClass;
use Class::Std::Fast::Storable;
1;
package main;
use Storable qw(freeze thaw);
my $thawn = freeze(thaw(MyClass->new()));
=head1 DESCRIPTION
Class::Std::Fast::Storable does the same as Class::Std::Storable
does for Class::Std. The API is the same as Class::Std::Storable's, with
few exceptions.
=head1 SUBROUTINES/METHODS
=head2 STORABLE_freeze
see method Class::Std::Storable::STORABLE_freeze
=head2 STORABLE_thaw
see method Class::Std::Storable::STORABLE_thaw
=head1 DIAGNOSTICS
see L<Class::Std>
and
see L<Class::Std::Storable>
=head1 CONFIGURATION AND ENVIRONMENT
=head1 DEPENDENCIES
=over
=item *
L<version>
=item *
L<Class::Std>
=item *
L<Carp>
=back
=head1 INCOMPATIBILITIES
STORABLE_freeze_pre, STORABLE_freeze_post, STORABLE_thaw_pre and
STORABLE_thaw_post must not be implemented as AUTOMETHOD.
see L<Class::Std> and L<Class::Std::Storable>
=head1 BUGS AND LIMITATIONS
see L<Class::Std> and L<Class::Std::Storable>
=head1 RCS INFORMATIONS
=over
=item Last changed by
$Author: ac0v $
=item Id
$Id: Storable.pm 469 2008-05-26 11:26:35Z ac0v $
=item Revision
$Revision: 469 $
=item Date
$Date: 2008-05-26 13:26:35 +0200 (Mon, 26 May 2008) $
=item HeadURL
$HeadURL: file:///var/svn/repos/Hyper/Class-Std-Fast/branches/0.0.8/lib/Class/Std/Fast/Storable.pm $
=back
=head1 AUTHOR
Andreas 'ac0v' Specht C<< <ACID@cpan.org> >>
=head1 LICENSE AND COPYRIGHT
Copyright (c) 2007, Andreas Specht C<< <ACID@cpan.org> >>.
All rights reserved.
This module is free software; you can redistribute it and/or
modify it under the same terms as Perl itself.
=cut
|