X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?p=gitmo%2FMouse.git;a=blobdiff_plain;f=lib%2FMouse%2FMeta%2FClass.pm;h=2689f85a6f00eef44d854cdf2934a0fd618feda4;hp=7ba56929e1674836fa028b965502eaad7d804abf;hb=60b5c3be4d0b3bb705df1e8d977f2ce90db6668d;hpb=88ed718958233d513d2a64db12c69ec2e2653e0c diff --git a/lib/Mouse/Meta/Class.pm b/lib/Mouse/Meta/Class.pm index 7ba5692..2689f85 100644 --- a/lib/Mouse/Meta/Class.pm +++ b/lib/Mouse/Meta/Class.pm @@ -5,56 +5,28 @@ 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 version authority identifier/; -use Carp 'confess'; - -do { - my %METACLASS_CACHE; - - # because Mouse doesn't introspect existing classes, we're forced to - # only pay attention to other Mouse classes - sub _metaclass_cache { - my $class = shift; - my $name = shift; - return $METACLASS_CACHE{$name}; - } - - sub initialize { - my($class, $package_name, @args) = @_; +use Mouse::Util qw/get_linear_isa not_supported/; - ($package_name && !ref($package_name)) - || confess("You must pass a package name and it cannot be blessed"); +use base qw(Mouse::Meta::Module); - return $METACLASS_CACHE{$package_name} - ||= $class->_construct_class_instance(package => $package_name, @args); - } +sub method_metaclass(){ 'Mouse::Meta::Method' } # required for get_method() - # 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 _construct_class_instance { +sub _new { my($class, %args) = @_; - $args{attributes} = {}; + $args{attributes} ||= {}; + $args{methods} ||= {}; + $args{roles} ||= []; + $args{superclasses} = do { no strict 'refs'; \@{ $args{package} . '::ISA' }; }; - $args{roles} ||= []; bless \%args, $class; } -sub name { $_[0]->{package} } +sub roles { $_[0]->{roles} } sub superclasses { my $self = shift; @@ -67,50 +39,11 @@ sub superclasses { @{ $self->{superclasses} }; } -sub add_method { - my $self = shift; - my $name = shift; - my $code = shift; - - my $pkg = $self->name; - - no strict 'refs'; - no warnings 'redefine'; - $self->{'methods'}->{$name}++; # Moose stores meta object here. - *{ $pkg . '::' . $name } = $code; -} - -sub has_method { - my $self = shift; - my $name = shift; - $self->name->can($name); -} - -# copied from Class::Inspector -my $get_methods_for_class = sub { - my $self = shift; - my $name = shift; - - no strict 'refs'; - # Get all the CODE symbol table entries - my @functions = - grep !/^(?:has|with|around|before|after|augment|inner|blessed|extends|confess|override|super)$/, - grep { defined &{"${name}::$_"} } - keys %{"${name}::"}; - push @functions, keys %{$self->{'methods'}->{$name}} if $self; - wantarray ? @functions : \@functions; -}; - -sub get_method_list { - my $self = shift; - $get_methods_for_class->($self, $self->name); -} - sub get_all_method_names { my $self = shift; my %uniq; return grep { $uniq{$_}++ == 0 } - map { $get_methods_for_class->(undef, $_) } + map { Mouse::Meta::Class->initialize($_)->get_method_list() } $self->linearized_isa; } @@ -165,22 +98,69 @@ sub get_all_attributes { return @attr; } -sub get_attribute_map { $_[0]->{attributes} } -sub has_attribute { exists $_[0]->{attributes}->{$_[1]} } -sub get_attribute { $_[0]->{attributes}->{$_[1]} } -sub get_attribute_list { +sub linearized_isa { @{ get_linear_isa($_[0]->name) } } + +sub new_object { my $self = shift; - keys %{$self->get_attribute_map}; -} + my $args = (@_ == 1) ? $_[0] : { @_ }; -sub linearized_isa { @{ get_linear_isa($_[0]->name) } } + my $instance = bless {}, $self->name; + + 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}; + + weaken($instance->{$key}) + if ref($instance->{$key}) && $attribute->is_weak_ref; + + if ($attribute->has_trigger) { + $attribute->trigger->($instance, $args->{$from}); + } + } + else { + if ($attribute->has_default || $attribute->has_builder) { + unless ($attribute->is_lazy) { + my $default = $attribute->default; + my $builder = $attribute->builder; + my $value = $attribute->has_builder + ? $instance->$builder + : ref($default) eq 'CODE' + ? $default->($instance) + : $default; + + $value = $attribute->coerce_constraint($value) + if $attribute->should_coerce; + $attribute->verify_against_type_constraint($value); + + $instance->{$key} = $value; + + weaken($instance->{$key}) + if ref($instance->{$key}) && $attribute->is_weak_ref; + } + } + else { + if ($attribute->is_required) { + $self->throw_error("Attribute (".$attribute->name.") is required"); + } + } + } + } + return $instance; +} sub clone_object { my $class = shift; my $instance = shift; (blessed($instance) && $instance->isa($class->name)) - || confess "You must pass an instance of the metaclass (" . $class->name . "), not ($instance)"; + || $class->throw_error("You must pass an instance of the metaclass (" . $class->name . "), not ($instance)"); $class->clone_instance($instance, @_); } @@ -189,7 +169,7 @@ sub clone_instance { my ($class, $instance, %params) = @_; (blessed($instance)) - || confess "You can only clone instances, ($instance) is not a blessed instance"; + || $class->throw_error("You can only clone instances, ($instance) is not a blessed instance"); my $clone = bless { %$instance }, ref $instance; @@ -213,7 +193,6 @@ sub make_immutable { @_, ); - my $name = $self->name; $self->{is_immutable}++; if ($args{inline_constructor}) { @@ -229,11 +208,10 @@ sub make_immutable { return 1; } -sub make_mutable { confess "Mouse does not currently support 'make_mutable'" } - -sub is_immutable { $_[0]->{is_immutable} } +sub make_mutable { not_supported } -sub attribute_metaclass { "Mouse::Meta::Class" } +sub is_immutable { $_[0]->{is_immutable} } +sub is_mutable { !$_[0]->{is_immutable} } sub _install_modifier { my ( $self, $into, $type, $name, $code ) = @_; @@ -252,9 +230,8 @@ sub _install_modifier { # replace this method itself :) { - no strict 'refs'; no warnings 'redefine'; - *{__PACKAGE__ . '::_install_modifier'} = sub { + *_install_modifier = sub { my ( $self, $into, $type, $name, $code ) = @_; $modifier->( $into, @@ -262,6 +239,8 @@ sub _install_modifier { $name, $code ); + $self->{methods}{$name}++; # register it to the method map + return; }; } @@ -287,31 +266,27 @@ sub add_after_method_modifier { 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 confess "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 roles { $_[0]->{roles} } - sub does_role { my ($self, $role_name) = @_; (defined $role_name) - || confess "You must supply a role name to look for"; + || $self->throw_error("You must supply a role name to look for"); for my $class ($self->linearized_isa) { - next unless $class->can('meta') and $class->meta->can('roles'); - for my $role (@{ $class->meta->roles }) { - return 1 if $role->name eq $role_name; + 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); } } @@ -322,30 +297,30 @@ sub create { my ($class, $package_name, %options) = @_; (ref $options{superclasses} eq 'ARRAY') - || confess "You must pass an ARRAY ref of superclasses" + || $class->throw_error("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" + || $class->throw_error("You must pass an ARRAY ref of attributes") if exists $options{attributes}; (ref $options{methods} eq 'HASH') - || confess "You must pass a HASH ref of methods" + || $class->throw_error("You must pass a HASH ref of methods") if exists $options{methods}; - do { - ( defined $package_name && $package_name ) - || confess "You must pass a package name"; + (ref $options{roles} eq 'ARRAY') + || $class->throw_error("You must pass an ARRAY ref of roles") + if exists $options{roles}; - 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}; + # instantiate a module + { + ( defined $package_name && $package_name ) + || $class->throw_error("You must pass a package name"); - eval $code; - confess "creation of $package_name failed : $@" if $@; - }; + no strict 'refs'; + ${ $package_name . '::VERSION' } = $options{version} if exists $options{version}; + ${ $package_name . '::AUTHORITY' } = $options{authority} if exists $options{authority}; + } my %initialize_options = %options; delete @initialize_options{qw( @@ -353,6 +328,7 @@ sub create { superclasses attributes methods + roles version authority )}; @@ -365,6 +341,7 @@ sub create { $meta->superclasses(@{$options{superclasses}}) if exists $options{superclasses}; + # NOTE: # process attributes first, so that they can # install accessors, but locally defined methods @@ -380,17 +357,67 @@ sub create { $meta->add_method($method_name, $options{methods}->{$method_name}); } } + if (exists $options{roles}){ + Mouse::Util::apply_all_roles($package_name, @{$options{roles}}); + } return $meta; } { my $ANON_CLASS_SERIAL = 0; my $ANON_CLASS_PREFIX = 'Mouse::Meta::Class::__ANON__::SERIAL::'; + + my %IMMORTAL_ANON_CLASSES; sub create_anon_class { my ( $class, %options ) = @_; + + my $cache = $options{cache}; + my $cache_key; + + if($cache){ # anonymous but not mortal + # something like Super::Class|Super::Class::2=Role|Role::1 + $cache_key = join '=' => ( + join('|', @{$options{superclasses} || []}), + join('|', sort @{$options{roles} || []}), + ); + return $IMMORTAL_ANON_CLASSES{$cache_key} if exists $IMMORTAL_ANON_CLASSES{$cache_key}; + } my $package_name = $ANON_CLASS_PREFIX . ++$ANON_CLASS_SERIAL; - return $class->create( $package_name, %options ); + my $meta = $class->create( $package_name, anon_class_id => $ANON_CLASS_SERIAL, %options ); + + if($cache){ + $IMMORTAL_ANON_CLASSES{$cache_key} = $meta; + } + else{ + Mouse::Meta::Module::weaken_metaclass($package_name); + } + return $meta; } + + sub is_anon_class{ + return exists $_[0]->{anon_class_id}; + } + + + sub DESTROY{ + my($self) = @_; + + my $serial_id = $self->{anon_class_id}; + + return if !$serial_id; + + my $stash = $self->namespace; + + @{$self->{sperclasses}} = (); + %{$stash} = (); + Mouse::Meta::Module::remove_metaclass_by_name($self->name); + + no strict 'refs'; + delete ${$ANON_CLASS_PREFIX}{ $serial_id . '::' }; + + return; + } + } 1;