# BEGIN BPS TAGGED BLOCK {{{
# COPYRIGHT:
#
# This software is Copyright (c) 2003-2006 Best Practical Solutions, LLC
# <clkao@bestpractical.com>
#
# (Except where explicitly superseded by other copyright notices)
#
#
# LICENSE:
#
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of either:
#
# a) Version 2 of the GNU General Public License. You should have
# received a copy of the GNU General Public License along with this
# program. If not, write to the Free Software Foundation, Inc., 51
# Franklin Street, Fifth Floor, Boston, MA 02110-1301 or visit
# their web page on the internet at
# http://www.gnu.org/copyleft/gpl.html.
#
# b) Version 1 of Perl's "Artistic License". You should have received
# a copy of the Artistic License with this package, in the file
# named "ARTISTIC". The license is also available at
# http://opensource.org/licenses/artistic-license.php.
#
# This work is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# CONTRIBUTION SUBMISSION POLICY:
#
# (The following paragraph is not intended to limit the rights granted
# to you to modify and distribute this software under the terms of the
# GNU General Public License and is only of importance to you if you
# choose to contribute your changes and enhancements to the community
# by submitting them to Best Practical Solutions, LLC.)
#
# By intentionally submitting any modifications, corrections or
# derivatives to this work, or any other work intended for use with SVK,
# to Best Practical Solutions, LLC, you confirm that you are the
# copyright holder for those contributions and you grant Best Practical
# Solutions, LLC a nonexclusive, worldwide, irrevocable, royalty-free,
# perpetual, license to use, copy, create derivative works based on
# those contributions, and sublicense and distribute those contributions
# and any derivatives thereof.
#
# END BPS TAGGED BLOCK }}}
package SVK::Accessor;
use strict;
use base qw(Class::Accessor::Fast Class::Data::Inheritable);
use Storable;
__PACKAGE__->mk_classdata('_shared_accessors');
__PACKAGE__->mk_classdata('_clonable_accessors');
sub mk_shared_accessors {
my $class = shift;
$class->mk_accessors(@_);
my $fun = $class->SUPER::can('_shared_accessors');
no strict 'refs';
unless (${$class.'::_shared_accessors_init'}) {
my $y = $fun->($class) || [];
$class->_shared_accessors(Storable::dclone($y));
${$class.'::_shared_accessors_init'} = 1;
}
push @{$class->_shared_accessors}, @_;
}
sub mk_clonable_accessors {
my $class = shift;
$class->mk_accessors(@_);
my $fun = $class->SUPER::can('_clonable_accessors');
no strict 'refs';
unless (${$class.'::_clonable_accessors_init'}) {
my $y = $fun->($class) || [];
$class->_clonable_accessors(Storable::dclone($y));
${$class.'::_clonable_accessors_init'} = 1;
}
push @{$class->_clonable_accessors}, @_;
}
sub clonable_accessors {
my $self = shift;
return (@{$self->_clonable_accessors});
}
sub shared_accessors {
my $self = shift;
return (@{$self->_shared_accessors});
}
sub real_new {
my $self = shift;
$self->SUPER::new(@_);
}
sub new {
my ($self, @arg) = @_;
Carp::cluck "bad usage" unless ref($self);
return $self->mclone(@arg);
}
sub clone {
my ($self) = @_;
my $cloned = ref($self)->real_new;
for my $key ($self->shared_accessors) {
$cloned->$key($self->$key);
}
for my $key ($self->clonable_accessors) {
next if $key =~ m/^_/;
Carp::cluck unless $self->can($key);
my $value = $self->$key;
if (UNIVERSAL::can($value, 'clone')) {
$cloned->$key($value->clone);
}
else {
$cloned->$key(ref $value ? Storable::dclone($value) : $value);
}
}
return $cloned;
}
sub mclone {
my $self = shift;
my $args = ref($_[0]) ? $_[0] : { @_ };
my $cloned = $self->clone;
for my $key (keys %$args) {
Carp::cluck unless $cloned->can($key);
$cloned->$key($args->{$key});
}
return $cloned;
}
1;