use Carp 'confess';
use Scalar::Util 'blessed';
-our $VERSION = '0.64_03';
+our $VERSION = '0.73';
$VERSION = eval $VERSION;
our $AUTHORITY = 'cpan:STEVAN';
'metaclass' => $metaclass,
'options' => $options,
'immutable_metaclass' => undef,
+ 'inlined_constructor' => undef,
);
- # NOTE:
- # we initialize the immutable
- # version of the metaclass here
- # FIXME lazify
- $self->create_immutable_metaclass;
-
return $self;
}
bless $options, $class;
}
-sub immutable_metaclass { (shift)->{'immutable_metaclass'} }
+sub immutable_metaclass {
+ my $self = shift;
+
+ $self->create_immutable_metaclass unless $self->{'immutable_metaclass'};
+
+ return $self->{'immutable_metaclass'};
+}
+
sub metaclass { (shift)->{'metaclass'} }
sub options { (shift)->{'options'} }
+sub inlined_constructor { (shift)->{'inlined_constructor'} }
sub create_immutable_metaclass {
my $self = shift;
%$options = %options; # FIXME who the hell is relying on this?!? tests fail =(
- if ($options{inline_accessors}) {
- foreach my $attr_name ($metaclass->get_attribute_list) {
- # inline the accessors
- $metaclass->get_attribute($attr_name)
- ->install_accessors(1);
- }
- }
+ $self->_inline_accessors( $metaclass, \%options );
+ $self->_inline_constructor( $metaclass, \%options );
+ $self->_inline_destructor( $metaclass, \%options );
+ $self->_check_memoized_methods( $metaclass, \%options );
- if ($options{inline_constructor}) {
- my $constructor_class = $options{constructor_class} || 'Class::MOP::Method::Constructor';
- $metaclass->add_method(
- $options{constructor_name},
- $constructor_class->new(
- options => \%options,
- metaclass => $metaclass,
- is_inline => 1,
- package_name => $metaclass->name,
- name => $options{constructor_name}
- )
- ) if $options{replace_constructor} or !$metaclass->has_method($options{constructor_name});
+ $metaclass->{'___original_class'} = blessed($metaclass);
+ bless $metaclass => $self->immutable_metaclass->name;
+}
+
+sub _inline_accessors {
+ my ( $self, $metaclass, $options ) = @_;
+
+ return unless $options->{inline_accessors};
+
+ foreach my $attr_name ( $metaclass->get_attribute_list ) {
+ $metaclass->get_attribute($attr_name)->install_accessors(1);
}
+}
- if ($options{inline_destructor}) {
- (exists $options{destructor_class})
- || confess "The 'inline_destructor' option is present, but "
- . "no destructor class was specified";
-
- my $destructor_class = $options{destructor_class};
-
- # NOTE:
- # we allow the destructor to determine
- # if it is needed or not before we actually
- # create the destructor too
- # - SL
- if ($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;
- }
+sub _inline_constructor {
+ my ( $self, $metaclass, $options ) = @_;
+
+ return unless $options->{inline_constructor};
+
+ return
+ unless $options->{replace_constructor}
+ or !$metaclass->has_method( $options->{constructor_name} );
+
+ my $constructor_class = $options->{constructor_class}
+ || 'Class::MOP::Method::Constructor';
+
+ my $constructor = $constructor_class->new(
+ options => $options,
+ metaclass => $metaclass,
+ is_inline => 1,
+ package_name => $metaclass->name,
+ name => $options->{constructor_name},
+ );
+
+ if ( $options->{replace_constructor} or $constructor->can_be_inlined ) {
+ $metaclass->add_method( $options->{constructor_name} => $constructor );
+ $self->{inlined_constructor} = $constructor;
}
+}
+
+sub _inline_destructor {
+ my ( $self, $metaclass, $options ) = @_;
+
+ return unless $options->{inline_destructor};
+
+ ( exists $options->{destructor_class} )
+ || confess "The 'inline_destructor' option is present, but "
+ . "no destructor class was specified";
+
+ my $destructor_class = $options->{destructor_class};
+
+ return unless $destructor_class->is_needed($metaclass);
+
+ my $destructor = $destructor_class->new(
+ options => $options,
+ metaclass => $metaclass,
+ package_name => $metaclass->name,
+ name => 'DESTROY'
+ );
+
+ return unless $destructor->is_needed;
+
+ $metaclass->add_method( 'DESTROY' => $destructor )
+}
+
+sub _check_memoized_methods {
+ my ( $self, $metaclass, $options ) = @_;
my $memoized_methods = $self->options->{memoize};
- foreach my $method_name (keys %{$memoized_methods}) {
+ foreach my $method_name ( keys %{$memoized_methods} ) {
my $type = $memoized_methods->{$method_name};
- ($metaclass->can($method_name))
- || confess "Could not find the method '$method_name' in " . $metaclass->name;
+ ( $metaclass->can($method_name) )
+ || confess "Could not find the method '$method_name' in "
+ . $metaclass->name;
+ }
+}
+
+sub create_methods_for_immutable_metaclass {
+ my $self = shift;
+
+ my %methods = %DEFAULT_METHODS;
+ my $metaclass = $self->metaclass;
+ my $meta = $metaclass->meta;
+
+ $methods{get_mutable_metaclass_name}
+ = sub { (shift)->{'___original_class'} };
+
+ $methods{immutable_transformer} = sub {$self};
+
+ return {
+ %DEFAULT_METHODS,
+ $self->_make_read_only_methods( $metaclass, $meta ),
+ $self->_make_uncallable_methods( $metaclass, $meta ),
+ $self->_make_memoized_methods( $metaclass, $meta ),
+ $self->_make_wrapped_methods( $metaclass, $meta ),
+ get_mutable_metaclass_name => sub { (shift)->{'___original_class'} },
+ immutable_transformer => sub {$self},
+ };
+}
+
+sub _make_read_only_methods {
+ my ( $self, $metaclass, $meta ) = @_;
+
+ my %methods;
+ foreach my $read_only_method ( @{ $self->options->{read_only} } ) {
+ my $method = $meta->find_method_by_name($read_only_method);
+
+ ( defined $method )
+ || confess "Could not find the method '$read_only_method' in "
+ . $metaclass->name;
+
+ $methods{$read_only_method} = sub {
+ confess "This method is read-only" if scalar @_ > 1;
+ goto &{ $method->body };
+ };
+ }
+
+ return %methods;
+}
+
+sub _make_uncallable_methods {
+ my ( $self, $metaclass, $meta ) = @_;
+
+ my %methods;
+ foreach my $cannot_call_method ( @{ $self->options->{cannot_call} } ) {
+ $methods{$cannot_call_method} = sub {
+ confess
+ "This method ($cannot_call_method) cannot be called on an immutable instance";
+ };
+ }
+
+ return %methods;
+}
+
+sub _make_memoized_methods {
+ my ( $self, $metaclass, $meta ) = @_;
- if ($type eq 'ARRAY') {
- $metaclass->{'___' . $method_name} = [ $metaclass->$method_name ];
+ my %methods;
+
+ my $memoized_methods = $self->options->{memoize};
+ foreach my $method_name ( keys %{$memoized_methods} ) {
+ my $type = $memoized_methods->{$method_name};
+ my $key = '___' . $method_name;
+ my $method = $meta->find_method_by_name($method_name);
+
+ if ( $type eq 'ARRAY' ) {
+ $methods{$method_name} = sub {
+ @{ $_[0]->{$key} } = $method->execute( $_[0] )
+ if !exists $_[0]->{$key};
+ return @{ $_[0]->{$key} };
+ };
}
- elsif ($type eq 'HASH') {
- $metaclass->{'___' . $method_name} = { $metaclass->$method_name };
+ elsif ( $type eq 'HASH' ) {
+ $methods{$method_name} = sub {
+ %{ $_[0]->{$key} } = $method->execute( $_[0] )
+ if !exists $_[0]->{$key};
+ return %{ $_[0]->{$key} };
+ };
}
- elsif ($type eq 'SCALAR') {
- $metaclass->{'___' . $method_name} = $metaclass->$method_name;
+ elsif ( $type eq 'SCALAR' ) {
+ $methods{$method_name} = sub {
+ $_[0]->{$key} = $method->execute( $_[0] )
+ if !exists $_[0]->{$key};
+ return $_[0]->{$key};
+ };
}
}
- $metaclass->{'___original_class'} = blessed($metaclass);
- bless $metaclass => $self->immutable_metaclass->name;
+ return %methods;
+}
+
+sub _make_wrapped_methods {
+ my ( $self, $metaclass, $meta ) = @_;
+
+ my %methods;
+
+ my $wrapped_methods = $self->options->{wrapped};
+
+ foreach my $method_name ( keys %{$wrapped_methods} ) {
+ my $method = $meta->find_method_by_name($method_name);
+
+ ( defined $method )
+ || confess "Could not find the method '$method_name' in "
+ . $metaclass->name;
+
+ my $wrapper = $wrapped_methods->{$method_name};
+
+ $methods{$method_name} = sub { $wrapper->( $method, @_ ) };
+ }
+
+ return %methods;
}
sub make_metaclass_mutable {
# 14:27 <@stevan> so I am not worried
if ($options{inline_constructor} && $immutable->has_method($options{constructor_name})) {
my $constructor_class = $options{constructor_class} || 'Class::MOP::Method::Constructor';
- $immutable->remove_method( $options{constructor_name} )
- if blessed($immutable->get_method($options{constructor_name})) eq $constructor_class;
- }
-}
-
-sub create_methods_for_immutable_metaclass {
- my $self = shift;
- my %methods = %DEFAULT_METHODS;
-
- foreach my $read_only_method (@{$self->options->{read_only}}) {
- my $method = $self->metaclass->meta->find_method_by_name($read_only_method);
-
- (defined $method)
- || confess "Could not find the method '$read_only_method' in " . $self->metaclass->name;
-
- $methods{$read_only_method} = sub {
- confess "This method is read-only" if scalar @_ > 1;
- goto &{$method->body}
- };
- }
-
- foreach my $cannot_call_method (@{$self->options->{cannot_call}}) {
- $methods{$cannot_call_method} = sub {
- confess "This method ($cannot_call_method) cannot be called on an immutable instance";
- };
- }
-
- my $memoized_methods = $self->options->{memoize};
- foreach my $method_name (keys %{$memoized_methods}) {
- my $type = $memoized_methods->{$method_name};
- if ($type eq 'ARRAY') {
- $methods{$method_name} = sub { @{$_[0]->{'___' . $method_name}} };
- }
- elsif ($type eq 'HASH') {
- $methods{$method_name} = sub { %{$_[0]->{'___' . $method_name}} };
+ if ( blessed($immutable->get_method($options{constructor_name})) eq $constructor_class ) {
+ $immutable->remove_method( $options{constructor_name} );
+ $self->{inlined_constructor} = undef;
}
- elsif ($type eq 'SCALAR') {
- $methods{$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;
}
1;
the immutable process. C<%options> should be the same options that were
given to make_metaclass_immutable.
+=item B<inlined_constructor>
+
+If the constructor was inlined, this returns the constructor method
+object that was created to do this.
+
=back
=head1 AUTHORS
projects / gitmo/Class-MOP.git / blobdiff