use Carp 'confess';
use Scalar::Util 'blessed';
-our $VERSION = '0.02';
+our $VERSION = '0.63';
our $AUTHORITY = 'cpan:STEVAN';
+use base 'Class::MOP::Object';
+
sub new {
my ($class, $metaclass, $options) = @_;
meta => sub {
my $self = shift;
# if it is not blessed, then someone is asking
- # for the meta of Class::MOP::Class::Immutable
+ # for the meta of Class::MOP::Immutable
return Class::MOP::Class->initialize($self) unless blessed($self);
# otherwise, they are asking for the metaclass
# which has been made immutable, which is itself
# existing metaclass to an immutable
# version of itself
sub make_metaclass_immutable {
- my ($self, $metaclass, %options) = @_;
+ my ($self, $metaclass, $options) = @_;
+
+ foreach my $pair (
+ [ inline_accessors => 1 ],
+ [ inline_constructor => 1 ],
+ [ inline_destructor => 0 ],
+ [ constructor_name => 'new' ],
+ [ debug => 0 ],
+ ) {
+ $options->{$pair->[0]} = $pair->[1] unless exists $options->{$pair->[0]};
+ }
- $options{inline_accessors} = 1 unless exists $options{inline_accessors};
- $options{inline_constructor} = 1 unless exists $options{inline_constructor};
- $options{inline_destructor} = 0 unless exists $options{inline_destructor};
- $options{constructor_name} = 'new' unless exists $options{constructor_name};
- $options{debug} = 0 unless exists $options{debug};
+ my %options = %$options;
if ($options{inline_accessors}) {
foreach my $attr_name ($metaclass->get_attribute_list) {
$metaclass->add_method(
$options{constructor_name},
$constructor_class->new(
- options => \%options,
- metaclass => $metaclass,
+ options => \%options,
+ metaclass => $metaclass,
+ is_inline => 1,
+ package_name => $metaclass->name,
+ name => $options{constructor_name}
)
) unless $metaclass->has_method($options{constructor_name});
}
my $destructor_class = $options{destructor_class};
- my $destructor = $destructor_class->new(
- options => \%options,
- metaclass => $metaclass,
- );
-
- $metaclass->add_method('DESTROY' => $destructor)
- # NOTE:
- # we allow the destructor to determine
- # if it is needed or not, it can perform
- # all sorts of checks because it has the
- # metaclass instance
- if $destructor->is_needed;
+ # NOTE:
+ # we allow the destructor to determine
+ # if it is needed or not before we actually
+ # create the destructor too
+ # - SL
+ if ($destructor_class->is_needed($metaclass)) {
+ my $destructor = $destructor_class->new(
+ options => \%options,
+ metaclass => $metaclass,
+ package_name => $metaclass->name,
+ name => 'DESTROY'
+ );
+
+ $metaclass->add_method('DESTROY' => $destructor)
+ # NOTE:
+ # we allow the destructor to determine
+ # if it is needed or not, it can perform
+ # all sorts of checks because it has the
+ # metaclass instance
+ if $destructor->is_needed;
+ }
}
my $memoized_methods = $self->options->{memoize};
}
sub make_metaclass_mutable {
- my ($self, $immutable, %options) = @_;
+ my ($self, $immutable, $options) = @_;
+
+ my %options = %$options;
my $original_class = $immutable->get_mutable_metaclass_name;
delete $immutable->{'___original_class'} ;
if ($options{inline_destructor} && $immutable->has_method('DESTROY')) {
$immutable->remove_method('DESTROY')
- if $immutable->get_method('DESTROY')->blessed eq $options{destructor_class};
+ if blessed($immutable->get_method('DESTROY')) eq $options{destructor_class};
}
# NOTE:
# 14:26 <@stevan> the only user of ::Method::Constructor is immutable
# 14:27 <@stevan> if someone uses it outside of immutable,.. they are either: mst or groditi
# 14:27 <@stevan> so I am not worried
- $options{constructor_name} = 'new' unless exists $options{constructor_name};
- if ($options{inline_constructor}) {
+ if ($options{inline_constructor} && $immutable->has_method($options{constructor_name})) {
my $constructor_class = $options{constructor_class} || 'Class::MOP::Method::Constructor';
$immutable->remove_method( $options{constructor_name} )
- if $immutable->get_method($options{constructor_name})->blessed eq $constructor_class;
+ if blessed($immutable->get_method($options{constructor_name})) eq $constructor_class;
}
}
$methods{$method_name} = sub { $_[0]->{'___' . $method_name} };
}
}
+
+ my $wrapped_methods = $self->options->{wrapped};
+
+ foreach my $method_name (keys %{ $wrapped_methods }) {
+ my $method = $self->metaclass->meta->find_method_by_name($method_name);
+
+ (defined $method)
+ || confess "Could not find the method '$method_name' in " . $self->metaclass->name;
+
+ my $wrapper = $wrapped_methods->{$method_name};
+
+ $methods{$method_name} = sub { $wrapper->($method, @_) };
+ }
$methods{get_mutable_metaclass_name} = sub { (shift)->{'___original_class'} };
+ $methods{immutable_transformer} = sub { $self };
+
return \%methods;
}
making methods un-callable and memoizing methods (in a type specific
way too).
-This module is fairly new to the MOP, and quite possibly will be
-expanded and further generalized as the need arises.
+This module is not for the feint of heart, it does some whacky things
+to the metaclass in order to make it immutable. If you are just curious,
+I suggest you turn back now, there is nothing to see here.
=head1 METHODS
=head1 COPYRIGHT AND LICENSE
-Copyright 2006, 2007 by Infinity Interactive, Inc.
+Copyright 2006-2008 by Infinity Interactive, Inc.
L<http://www.iinteractive.com>