use strict;
use warnings;
-use Mouse::Meta::Method::Constructor;
-use Mouse::Meta::Method::Destructor;
use Scalar::Util qw/blessed weaken/;
+
use Mouse::Util qw/get_linear_isa not_supported/;
+use Mouse::Meta::Method::Constructor;
+use Mouse::Meta::Method::Destructor;
+use Mouse::Meta::Module;
+
use base qw(Mouse::Meta::Module);
+sub method_metaclass(){ 'Mouse::Meta::Method' } # required for get_method()
-sub _new {
+sub _construct_meta {
my($class, %args) = @_;
$args{attributes} ||= {};
\@{ $args{package} . '::ISA' };
};
- bless \%args, $class;
+ #return Mouse::Meta::Class->initialize($class)->new_object(%args)
+ # if $class ne __PACKAGE__;
+
+ return bless \%args, ref($class) || $class;
+}
+
+sub create_anon_class{
+ my $self = shift;
+ return $self->create(undef, @_);
+}
+
+sub is_anon_class{
+ return exists $_[0]->{anon_serial_id};
}
sub roles { $_[0]->{roles} }
@{ $self->{superclasses} } = @_;
}
- @{ $self->{superclasses} };
+ return @{ $self->{superclasses} };
+}
+
+sub find_method_by_name{
+ my($self, $method_name) = @_;
+ defined($method_name)
+ or $self->throw_error('You must define a method name to find');
+ foreach my $class( $self->linearized_isa ){
+ my $method = $self->initialize($class)->get_method($method_name);
+ return $method if defined $method;
+ }
+ return undef;
+}
+
+sub get_all_methods {
+ my($self) = @_;
+ return map{ $self->find_method_by_name($self) } $self->get_all_method_names;
}
sub get_all_method_names {
sub add_attribute {
my $self = shift;
- if (@_ == 1 && blessed($_[0])) {
- my $attr = shift @_;
- $self->{'attributes'}{$attr->name} = $attr;
- } else {
- my $names = shift @_;
- $names = [$names] if !ref($names);
- my $metaclass = 'Mouse::Meta::Attribute';
- my %options = @_;
-
- if ( my $metaclass_name = delete $options{metaclass} ) {
- my $new_class = Mouse::Util::resolve_metaclass_alias(
- 'Attribute',
- $metaclass_name
- );
- if ( $metaclass ne $new_class ) {
- $metaclass = $new_class;
+ my($attr, $name);
+
+ if(blessed $_[0]){
+ $attr = $_[0];
+
+ $attr->isa('Mouse::Meta::Attribute')
+ || $self->throw_error("Your attribute must be an instance of Mouse::Meta::Attribute (or a subclass)");
+
+ $name = $attr->name;
+ }
+ else{
+ # _process_attribute
+ $name = shift;
+
+ my %args = (@_ == 1) ? %{$_[0]} : @_;
+
+ defined($name)
+ or $self->throw_error('You must provide a name for the attribute');
+
+ if ($name =~ s/^\+//) { # inherited attributes
+ my $inherited_attr;
+
+ foreach my $class($self->linearized_isa){
+ my $meta = Mouse::Meta::Module::get_metaclass_by_name($class) or next;
+ $inherited_attr = $meta->get_attribute($name) and last;
}
+
+ defined($inherited_attr)
+ or $self->throw_error("Could not find an attribute by the name of '$name' to inherit from in ".$self->name);
+
+ $attr = $inherited_attr->clone_and_inherit_options($name, \%args);
}
+ else{
+ my($attribute_class, @traits) = Mouse::Meta::Attribute->interpolate_class($name, \%args);
+ $args{traits} = \@traits if @traits;
- for my $name (@$names) {
- if ($name =~ s/^\+//) {
- $metaclass->clone_parent($self, $name, @_);
- }
- else {
- $metaclass->create($self, $name, @_);
- }
+ $attr = $attribute_class->new($name, \%args);
}
}
+
+ weaken( $attr->{associated_class} = $self );
+
+ $self->{attributes}{$attr->name} = $attr;
+ $attr->install_accessors();
+
+ if(!$attr->{associated_methods} && ($attr->{is} || '') ne 'bare'){
+ Carp::cluck(qq{Attribute (}.$attr->name.qq{) of class }.$self->name.qq{ has no associated methods (did you mean to provide an "is" argument?)});
+ }
+ return $attr;
}
sub compute_all_applicable_attributes { shift->get_all_attributes(@_) }
sub new_object {
my $self = shift;
- my $args = (@_ == 1) ? $_[0] : { @_ };
+ my %args = (@_ == 1 ? %{$_[0]} : @_);
my $instance = bless {}, $self->name;
+ $self->_initialize_instance($instance, \%args);
+ return $instance;
+}
+
+sub _initialize_instance{
+ my($self, $instance, $args) = @_;
+
+ my @triggers_queue;
+
foreach my $attribute ($self->get_all_attributes) {
my $from = $attribute->init_arg;
my $key = $attribute->name;
if (defined($from) && exists($args->{$from})) {
$args->{$from} = $attribute->coerce_constraint($args->{$from})
if $attribute->should_coerce;
+
$attribute->verify_against_type_constraint($args->{$from});
$instance->{$key} = $args->{$from};
if ref($instance->{$key}) && $attribute->is_weak_ref;
if ($attribute->has_trigger) {
- $attribute->trigger->($instance, $args->{$from});
+ push @triggers_queue, [ $attribute->trigger, $args->{$from} ];
}
}
else {
}
}
}
+
+ foreach my $trigger_and_value(@triggers_queue){
+ my($trigger, $value) = @{$trigger_and_value};
+ $trigger->($instance, $value);
+ }
+
+ if($self->is_anon_class){
+ $instance->{__METACLASS__} = $self;
+ }
+
return $instance;
}
sub clone_object {
my $class = shift;
my $instance = shift;
+ my %params = (@_ == 1) ? %{$_[0]} : @_;
(blessed($instance) && $instance->isa($class->name))
|| $class->throw_error("You must pass an instance of the metaclass (" . $class->name . "), not ($instance)");
- $class->clone_instance($instance, @_);
-}
-
-sub clone_instance {
- my ($class, $instance, %params) = @_;
-
- (blessed($instance))
- || $class->throw_error("You can only clone instances, ($instance) is not a blessed instance");
-
my $clone = bless { %$instance }, ref $instance;
foreach my $attr ($class->get_all_attributes()) {
}
return $clone;
+}
+
+sub clone_instance {
+ my ($class, $instance, %params) = @_;
+ Carp::cluck('clone_instance has been deprecated. Use clone_object instead');
+ return $class->clone_object($instance, %params);
}
sub make_immutable {
sub make_mutable { not_supported }
-sub is_immutable { $_[0]->{is_immutable} }
+sub is_immutable { $_[0]->{is_immutable} }
+sub is_mutable { !$_[0]->{is_immutable} }
sub _install_modifier {
my ( $self, $into, $type, $name, $code ) = @_;
$name,
$code
);
+ $self->{methods}{$name}++; # register it to the method map
+ return;
};
}
sub add_override_method_modifier {
my ($self, $name, $code) = @_;
- my $pkg = $self->name;
- my $method = "${pkg}::${name}";
-
- # Class::Method::Modifiers won't do this for us, so do it ourselves
+ my $package = $self->name;
- my $body = $pkg->can($name)
- or $self->throw_error("You cannot override '$method' because it has no super method");
+ my $body = $package->can($name)
+ or $self->throw_error("You cannot override '$name' because it has no super method");
- no strict 'refs';
- *$method = sub { $code->($pkg, $body, @_) };
+ $self->add_method($name => sub { $code->($package, $body, @_) });
}
sub does_role {
|| $self->throw_error("You must supply a role name to look for");
for my $class ($self->linearized_isa) {
- my $meta = Mouse::class_of($class);
+ my $meta = Mouse::Meta::Module::class_of($class);
next unless $meta && $meta->can('roles');
for my $role (@{ $meta->roles }) {
+
return 1 if $role->does_role($role_name);
}
}
return 0;
}
-sub create {
- my ($class, $package_name, %options) = @_;
-
- (ref $options{superclasses} eq 'ARRAY')
- || $class->throw_error("You must pass an ARRAY ref of superclasses")
- if exists $options{superclasses};
-
- (ref $options{attributes} eq 'ARRAY')
- || $class->throw_error("You must pass an ARRAY ref of attributes")
- if exists $options{attributes};
-
- (ref $options{methods} eq 'HASH')
- || $class->throw_error("You must pass a HASH ref of methods")
- if exists $options{methods};
-
- do {
- ( defined $package_name && $package_name )
- || $class->throw_error("You must pass a package name");
-
- my $code = "package $package_name;";
- $code .= "\$$package_name\:\:VERSION = '" . $options{version} . "';"
- if exists $options{version};
- $code .= "\$$package_name\:\:AUTHORITY = '" . $options{authority} . "';"
- if exists $options{authority};
-
- eval $code;
- $class->throw_error("creation of $package_name failed : $@") if $@;
- };
-
- my %initialize_options = %options;
- delete @initialize_options{qw(
- package
- superclasses
- attributes
- methods
- version
- authority
- )};
- my $meta = $class->initialize( $package_name => %initialize_options );
-
- # FIXME totally lame
- $meta->add_method('meta' => sub {
- Mouse::Meta::Class->initialize(ref($_[0]) || $_[0]);
- });
-
- $meta->superclasses(@{$options{superclasses}})
- if exists $options{superclasses};
- # NOTE:
- # process attributes first, so that they can
- # install accessors, but locally defined methods
- # can then overwrite them. It is maybe a little odd, but
- # I think this should be the order of things.
- if (exists $options{attributes}) {
- foreach my $attr (@{$options{attributes}}) {
- Mouse::Meta::Attribute->create($meta, $attr->{name}, %$attr);
- }
- }
- if (exists $options{methods}) {
- foreach my $method_name (keys %{$options{methods}}) {
- $meta->add_method($method_name, $options{methods}->{$method_name});
- }
- }
- return $meta;
-}
-
-{
- my $ANON_CLASS_SERIAL = 0;
- my $ANON_CLASS_PREFIX = 'Mouse::Meta::Class::__ANON__::SERIAL::';
- sub create_anon_class {
- my ( $class, %options ) = @_;
- my $package_name = $ANON_CLASS_PREFIX . ++$ANON_CLASS_SERIAL;
- return $class->create( $package_name, %options );
- }
-}
-
1;
__END__
=head1 NAME
-Mouse::Meta::Class - hook into the Mouse MOP
+Mouse::Meta::Class - The Mouse class metaclass
=head1 METHODS
Finds or creates a Mouse::Meta::Class instance for the given ClassName. Only
one instance should exist for a given class.
-=head2 new %args -> Mouse::Meta::Class
-
-Creates a new Mouse::Meta::Class. Don't call this directly.
-
=head2 name -> ClassName
Returns the name of the owner class.
Gets (or sets) the list of superclasses of the owner class.
-=head2 add_attribute (Mouse::Meta::Attribute| name => spec)
+=head2 add_attribute (name => spec | Mouse::Meta::Attribute)
Begins keeping track of the existing L<Mouse::Meta::Attribute> for the owner
class.
Returns the list of classes in method dispatch order, with duplicates removed.
+=head2 new_object Parameters -> Instance
+
+Create a new instance.
+
=head2 clone_object Instance -> Instance
Clones the given C<Instance> which must be an instance governed by this
metaclass.
-=head2 clone_instance Instance, Parameters -> Instance
+=head1 SEE ALSO
-The clone_instance method has been made private.
-The public version is deprecated.
+L<Moose::Meta::Class>
=cut
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