-#!/usr/bin/env perl
package Mouse::Meta::Class;
use strict;
use warnings;
use Mouse::Meta::Method::Constructor;
use Mouse::Meta::Method::Destructor;
-use Mouse::Util qw/get_linear_isa blessed/;
+use Scalar::Util qw/blessed weaken/;
+use Mouse::Util qw/get_linear_isa version authority identifier get_code_info/;
use Carp 'confess';
+use base qw(Mouse::Meta::Module);
+
do {
my %METACLASS_CACHE;
}
sub initialize {
- my $class = shift;
- my $name = shift;
- $METACLASS_CACHE{$name} = $class->new(name => $name)
- if !exists($METACLASS_CACHE{$name});
- return $METACLASS_CACHE{$name};
+ my($class, $package_name, @args) = @_;
+
+ ($package_name && !ref($package_name))\r
+ || confess("You must pass a package name and it cannot be blessed");\r
+
+ return $METACLASS_CACHE{$package_name}
+ ||= $class->_construct_class_instance(package => $package_name, @args);
+ }
+
+ sub class_of{
+ my($class_or_instance) = @_;
+ return undef unless defined $class_or_instance;
+ return $METACLASS_CACHE{ blessed($class_or_instance) || $class_or_instance };
}
+
+ # Means of accessing all the metaclasses that have
+ # been initialized thus far
+ sub get_all_metaclasses { %METACLASS_CACHE }
+ sub get_all_metaclass_instances { values %METACLASS_CACHE }
+ sub get_all_metaclass_names { keys %METACLASS_CACHE }
+ sub get_metaclass_by_name { $METACLASS_CACHE{$_[0]} }
+ sub store_metaclass_by_name { $METACLASS_CACHE{$_[0]} = $_[1] }
+ sub weaken_metaclass { weaken($METACLASS_CACHE{$_[0]}) }
+ sub does_metaclass_exist { exists $METACLASS_CACHE{$_[0]} && defined $METACLASS_CACHE{$_[0]} }
+ sub remove_metaclass_by_name { $METACLASS_CACHE{$_[0]} = undef }
};
-sub new {
- my $class = shift;
- my %args = @_;
+sub _construct_class_instance {
+ my($class, %args) = @_;
- $args{attributes} = {};
+ $args{attributes} = {};
$args{superclasses} = do {
no strict 'refs';
- \@{ $args{name} . '::ISA' };
+ \@{ $args{package} . '::ISA' };
};
- $args{roles} ||= [];
+ $args{roles} ||= [];
+ $args{methods} ||= {};
bless \%args, $class;
}
-sub name { $_[0]->{name} }
+sub name { $_[0]->{package} }
+sub _method_map{ $_[0]->{methods} }
+
+sub namespace{
+ my $name = $_[0]->{package};
+ no strict 'refs';
+ return \%{ $name . '::' };
+}
sub superclasses {
my $self = shift;
@{ $self->{superclasses} };
}
-sub add_method {
+sub get_all_method_names {
my $self = shift;
- my $name = shift;
- my $code = shift;
-
- my $pkg = $self->name;
-
- no strict 'refs';
- *{ $pkg . '::' . $name } = $code;
-}
-
-# copied from Class::Inspector
-sub get_method_list {
- my $self = shift;
- my $name = $self->name;
-
- no strict 'refs';
- # Get all the CODE symbol table entries
- my @functions = grep !/^meta$/,
- grep { /\A[^\W\d]\w*\z/o }
- grep { defined &{"${name}::$_"} }
- keys %{"${name}::"};
- wantarray ? @functions : \@functions;
+ my %uniq;
+ return grep { $uniq{$_}++ == 0 }
+ map { Mouse::Meta::Class->initialize($_)->get_method_list() }
+ $self->linearized_isa;
}
sub add_attribute {
my $self = shift;
- my $attr = shift;
- $self->{'attributes'}{$attr->name} = $attr;
+ if (@_ == 1 && blessed($_[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;
+ }
+ }
+
+ for my $name (@$names) {
+ if ($name =~ s/^\+//) {
+ $metaclass->clone_parent($self, $name, @_);
+ }
+ else {
+ $metaclass->create($self, $name, @_);
+ }
+ }
+ }
}
-sub compute_all_applicable_attributes {
+sub compute_all_applicable_attributes { shift->get_all_attributes(@_) }
+sub get_all_attributes {
my $self = shift;
my (@attr, %seen);
sub get_attribute_map { $_[0]->{attributes} }
sub has_attribute { exists $_[0]->{attributes}->{$_[1]} }
sub get_attribute { $_[0]->{attributes}->{$_[1]} }
+sub get_attribute_list {
+ my $self = shift;
+ keys %{$self->get_attribute_map};
+}
sub linearized_isa { @{ get_linear_isa($_[0]->name) } }
my $clone = bless { %$instance }, ref $instance;
- foreach my $attr ($class->compute_all_applicable_attributes()) {
+ foreach my $attr ($class->get_all_attributes()) {
if ( defined( my $init_arg = $attr->init_arg ) ) {
if (exists $params{$init_arg}) {
$clone->{ $attr->name } = $params{$init_arg};
sub make_immutable {
my $self = shift;
+ my %args = (
+ inline_constructor => 1,
+ inline_destructor => 1,
+ @_,
+ );
+
my $name = $self->name;
$self->{is_immutable}++;
- no strict 'refs';
- *{"$name\::new"} = Mouse::Meta::Method::Constructor->generate_constructor_method_inline( $self );
- *{"$name\::DESTROY"} = Mouse::Meta::Method::Destructor->generate_destructor_method_inline( $self );
-}
-sub make_mutable {
- Carp::croak "Mouse::Meta::Class->make_mutable does not supported by Mouse";
+
+ if ($args{inline_constructor}) {
+ $self->add_method('new' => Mouse::Meta::Method::Constructor->generate_constructor_method_inline( $self ));
+ }
+
+ if ($args{inline_destructor}) {
+ $self->add_method('DESTROY' => Mouse::Meta::Method::Destructor->generate_destructor_method_inline( $self ));
+ }
+
+ # Moose's make_immutable returns true allowing calling code to skip setting an explicit true value
+ # at the end of a source file.
+ return 1;
}
+
+sub make_mutable { confess "Mouse does not currently support 'make_mutable'" }
+
sub is_immutable { $_[0]->{is_immutable} }
sub attribute_metaclass { "Mouse::Meta::Class" }
+sub _install_modifier {
+ my ( $self, $into, $type, $name, $code ) = @_;
+
+ # which is modifer class available?
+ my $modifier_class = do {
+ if (eval "require Class::Method::Modifiers::Fast; 1") {
+ 'Class::Method::Modifiers::Fast';
+ } elsif (eval "require Class::Method::Modifiers; 1") {
+ 'Class::Method::Modifiers';
+ } else {
+ Carp::croak("Method modifiers require the use of Class::Method::Modifiers or Class::Method::Modifiers::Fast. Please install it from CPAN and file a bug report with this application.");
+ }
+ };
+ my $modifier = $modifier_class->can('_install_modifier');
+
+ # replace this method itself :)
+ {
+ no strict 'refs';
+ no warnings 'redefine';
+ *{__PACKAGE__ . '::_install_modifier'} = sub {
+ my ( $self, $into, $type, $name, $code ) = @_;
+ $modifier->(
+ $into,
+ $type,
+ $name,
+ $code
+ );
+ };
+ }
+
+ # call me. for first time.
+ $self->_install_modifier( $into, $type, $name, $code );
+}
+
sub add_before_method_modifier {
- my ($self, $name, $code) = @_;
- require Class::Method::Modifiers;
- Class::Method::Modifiers::_install_modifier(
- $self->name,
- 'before',
- $name,
- $code,
- );
+ my ( $self, $name, $code ) = @_;
+ $self->_install_modifier( $self->name, 'before', $name, $code );
}
sub add_around_method_modifier {
- my ($self, $name, $code) = @_;
- require Class::Method::Modifiers;
- Class::Method::Modifiers::_install_modifier(
- $self->name,
- 'around',
- $name,
- $code,
- );
+ my ( $self, $name, $code ) = @_;
+ $self->_install_modifier( $self->name, 'around', $name, $code );
}
sub add_after_method_modifier {
+ my ( $self, $name, $code ) = @_;
+ $self->_install_modifier( $self->name, 'after', $name, $code );
+}
+
+sub add_override_method_modifier {
my ($self, $name, $code) = @_;
- require Class::Method::Modifiers;
- Class::Method::Modifiers::_install_modifier(
- $self->name,
- 'after',
- $name,
- $code,
- );
+
+ my $pkg = $self->name;
+ my $method = "${pkg}::${name}";
+
+ # Class::Method::Modifiers won't do this for us, so do it ourselves
+
+ my $body = $pkg->can($name)
+ or confess "You cannot override '$method' because it has no super method";
+
+ no strict 'refs';
+ *$method = sub { $code->($pkg, $body, @_) };
}
+
sub roles { $_[0]->{roles} }
sub does_role {
my ($self, $role_name) = @_;
+
(defined $role_name)
|| confess "You must supply a role name to look for";
- for my $role (@{ $self->{roles} }) {
- return 1 if $role->name eq $role_name;
+
+ for my $class ($self->linearized_isa) {
+ my $meta = class_of($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, @args ) = @_;
-
- unshift @args, 'package' if @args % 2 == 1;
-
- my (%options) = @args;
- my $package_name = $options{package};
+ my ($class, $package_name, %options) = @_;
(ref $options{superclasses} eq 'ARRAY')
|| confess "You must pass an ARRAY ref of superclasses"
if exists $options{superclasses};
-
+
(ref $options{attributes} eq 'ARRAY')
|| confess "You must pass an ARRAY ref of attributes"
- if exists $options{attributes};
-
+ if exists $options{attributes};
+
(ref $options{methods} eq 'HASH')
|| confess "You must pass a HASH ref of methods"
- if exists $options{methods};
+ if exists $options{methods};
do {
- # XXX should I implement Mouse::Meta::Module?
- my $package_name = $options{package};
-
( defined $package_name && $package_name )
|| confess "You must pass a package name";
confess "creation of $package_name failed : $@" if $@;
};
- my (%initialize_options) = @args;
+ my %initialize_options = %options;
delete @initialize_options{qw(
package
superclasses
# FIXME totally lame
$meta->add_method('meta' => sub {
- $class->initialize(ref($_[0]) || $_[0]);
+ Mouse::Meta::Class->initialize(ref($_[0]) || $_[0]);
});
$meta->superclasses(@{$options{superclasses}})
Gets (or sets) the list of superclasses of the owner class.
-=head2 add_attribute Mouse::Meta::Attribute
+=head2 add_attribute (Mouse::Meta::Attribute| name => spec)
Begins keeping track of the existing L<Mouse::Meta::Attribute> for the owner
class.
-=head2 compute_all_applicable_attributes -> (Mouse::Meta::Attribute)
+=head2 get_all_attributes -> (Mouse::Meta::Attribute)
Returns the list of all L<Mouse::Meta::Attribute> instances associated with
this class and its superclasses.
Returns a mapping of attribute names to their corresponding
L<Mouse::Meta::Attribute> objects.
-=head2 has_attribute Name -> Boool
+=head2 get_attribute_list -> { name => Mouse::Meta::Attribute }
+
+This returns a list of attribute names which are defined in the local
+class. If you want a list of all applicable attributes for a class,
+use the C<get_all_attributes> method.
+
+=head2 has_attribute Name -> Bool
Returns whether we have a L<Mouse::Meta::Attribute> with the given name.
=head2 clone_instance Instance, Parameters -> Instance
-Clones the given C<Instance> and sets any additional parameters.
+The clone_instance method has been made private.
+The public version is deprecated.
=cut
projects / gitmo/Mouse.git / blobdiff