use strict;
use warnings;
+use Carp ();
use Scalar::Util qw/blessed weaken/;
-use Mouse::Util qw/get_code_info/;
-use Carp 'confess';
-sub name { $_[0]->{package} }
-sub _method_map{ $_[0]->{methods} }
+use Mouse::Util qw/:meta get_code_info not_supported load_class/;
+
+{
+ my %METACLASS_CACHE;
+
+ # because Mouse doesn't introspect existing classes, we're forced to
+ # only pay attention to other Mouse classes
+ sub _metaclass_cache {
+ my($class, $name) = @_;
+ return $METACLASS_CACHE{$name};
+ }
+
+ sub initialize {
+ my($class, $package_name, @args) = @_;
+ ($package_name && !ref($package_name))
+ || $class->throw_error("You must pass a package name and it cannot be blessed");
+
+ return $METACLASS_CACHE{$package_name}
+ ||= $class->_construct_meta(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 { defined $METACLASS_CACHE{$_[0]} }
+ sub remove_metaclass_by_name { delete $METACLASS_CACHE{$_[0]} }
+
+}
+
+sub _new{ Carp::croak("Mouse::Meta::Module is an abstract class") }
+
+sub name { $_[0]->{package} }
sub version { no strict 'refs'; ${shift->name.'::VERSION'} }
sub authority { no strict 'refs'; ${shift->name.'::AUTHORITY'} }
);
}
+# add_attribute is an abstract method
+
+sub get_attribute_map { $_[0]->{attributes} }
+sub has_attribute { exists $_[0]->{attributes}->{$_[1]} }
+sub get_attribute { $_[0]->{attributes}->{$_[1]} }
+sub get_attribute_list{ keys %{$_[0]->{attributes}} }
+sub remove_attribute { delete $_[0]->{attributes}->{$_[1]} }
sub namespace{
my $name = $_[0]->{package};
my($self, $name, $code) = @_;
if(!defined $name){
- confess "You must pass a defined name";
+ $self->throw_error('You must pass a defined name');
}
+ if(!defined $code){
+ $self->throw_error('You must pass a defined code');
+ }
+
if(ref($code) ne 'CODE'){
- confess "You must pass a CODE reference";
+ not_supported 'add_method for a method object';
}
- $self->_method_map->{$name}++; # Moose stores meta object here.
+ $self->{methods}->{$name}++; # Moose stores meta object here.
my $pkg = $self->name;
no strict 'refs';
*{ $pkg . '::' . $name } = $code;
}
-sub _code_is_mine { # taken from Class::MOP::Class\r
- my ( $self, $code ) = @_;\r
-\r
- my ( $code_package, $code_name ) = get_code_info($code);\r
-\r
- return $code_package && $code_package eq $self->name\r
- || ( $code_package eq 'constant' && $code_name eq '__ANON__' );\r
+sub _code_is_mine { # taken from Class::MOP::Class
+ my ( $self, $code ) = @_;
+
+ my ( $code_package, $code_name ) = get_code_info($code);
+
+ return $code_package && $code_package eq $self->name
+ || ( $code_package eq 'constant' && $code_name eq '__ANON__' );
}
sub has_method {
my($self, $method_name) = @_;
- return 1 if $self->_method_map->{$method_name};
+ return 1 if $self->{methods}->{$method_name};
my $code = $self->name->can($method_name);
return $code && $self->_code_is_mine($code);
}
+sub get_method{
+ my($self, $method_name) = @_;
+
+ if($self->has_method($method_name)){
+ my $method_metaclass = $self->method_metaclass;
+ load_class($method_metaclass);
+
+ my $package = $self->name;
+ return $method_metaclass->new(
+ body => $package->can($method_name),
+ name => $method_name,
+ package => $package,
+ );
+ }
+ return undef;
+}
-sub get_method_list {\r
+sub get_method_list {
my($self) = @_;
-\r
- return grep { $self->has_method($_) } keys %{ $self->namespace };\r
+
+ return grep { $self->has_method($_) } keys %{ $self->namespace };
}
-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};
+{
+ my $ANON_SERIAL = 0;
+ my $ANON_PREFIX = 'Mouse::Meta::Module::__ANON__::';
+
+ my %IMMORTALS;
+
+ sub create {
+ my ($class, $package_name, %options) = @_;
+
+ $class->throw_error('You must pass a package name') if @_ == 1;
+
+
+ if(exists $options{superclasses}){
+ if($class->isa('Mouse::Meta::Class')){
+ (ref $options{superclasses} eq 'ARRAY')
+ || $class->throw_error("You must pass an ARRAY ref of superclasses");
+ }
+ else{ # role
+ delete $options{superclasses};
+ }
+ }
+
+ my $attributes;
+ if(exists $options{attributes}){
+ $attributes = delete $options{attributes};
+ (ref $attributes eq 'ARRAY' || ref $attributes eq 'HASH')
+ || $class->throw_error("You must pass an ARRAY ref of attributes")
+ }
+
+ (ref $options{methods} eq 'HASH')
+ || $class->throw_error("You must pass a HASH ref of methods")
+ if exists $options{methods};
+
+ (ref $options{roles} eq 'ARRAY')
+ || $class->throw_error("You must pass an ARRAY ref of roles")
+ if exists $options{roles};
+
+
+ my @extra_options;
+ my $mortal;
+ my $cache_key;
+
+ if(!defined $package_name){ # anonymous
+ $mortal = !$options{cache};
+
+ # anonymous but immortal
+ if(!$mortal){
+ # something like Super::Class|Super::Class::2=Role|Role::1
+ $cache_key = join '=' => (
+ join('|', @{$options{superclasses} || []}),
+ join('|', sort @{$options{roles} || []}),
+ );
+ return $IMMORTALS{$cache_key} if exists $IMMORTALS{$cache_key};
+ }
+ $package_name = $ANON_PREFIX . ++$ANON_SERIAL;
+
+ push @extra_options, (anon_serial_id => $ANON_SERIAL);
+ }
+
+ # instantiate a module
+ {
+ no strict 'refs';
+ ${ $package_name . '::VERSION' } = delete $options{version} if exists $options{version};
+ ${ $package_name . '::AUTHORITY' } = delete $options{authority} if exists $options{authority};
+ }
+
+ my %initialize_options = %options;
+ delete @initialize_options{qw(
+ package
+ superclasses
+ attributes
+ methods
+ roles
+ )};
+ my $meta = $class->initialize( $package_name, %initialize_options, @extra_options);
+
+ Mouse::Meta::Module::weaken_metaclass($package_name)
+ if $mortal;
+
+ # FIXME totally lame
+ $meta->add_method('meta' => sub {
+ $class->initialize(ref($_[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 (defined $attributes) {
+ if(ref($attributes) eq 'ARRAY'){
+ foreach my $attr (@{$attributes}) {
+ $meta->add_attribute($attr->{name} => $attr);
+ }
+ }
+ else{
+ while(my($name, $attr) = each %{$attributes}){
+ $meta->add_attribute($name => $attr);
+ }
+ }
+ }
+ if (exists $options{methods}) {
+ foreach my $method_name (keys %{$options{methods}}) {
+ $meta->add_method($method_name, $options{methods}->{$method_name});
+ }
+ }
+ if (exists $options{roles}){
+ Mouse::Util::apply_all_roles($package_name, @{$options{roles}});
+ }
+
+ if(!$mortal && exists $meta->{anon_serial_id}){
+ $IMMORTALS{$cache_key} = $meta;
+ }
+
+ return $meta;
+ }
+
+ sub DESTROY{
+ my($self) = @_;
+
+ my $serial_id = $self->{anon_serial_id};
+
+ return if !$serial_id;
+
+ my $stash = $self->namespace;
+
+ @{$self->{superclasses}} = () if exists $self->{superclasses};
+ %{$stash} = ();
+ Mouse::Meta::Module::remove_metaclass_by_name($self->name);
+
+ no strict 'refs';
+ delete ${$ANON_PREFIX}{ $serial_id . '::' };
+
+ return;
+ }
}
+sub throw_error{
+ my($class, $message, %args) = @_;
+
+ local $Carp::CarpLevel = $Carp::CarpLevel + 1 + ($args{depth} || 0);
+ local $Carp::MaxArgNums = 20; # default is 8, usually we use named args which gets messier though
+
+ if(exists $args{longmess} && !$args{longmess}){ # intentionaly longmess => 0
+ Carp::croak($message);
+ }
+ else{
+ Carp::confess($message);
+ }
+}
1;
=head1 NAME
-Mouse::Meta::Module - Common base class for Mouse::Meta::Class and Mouse::Meta::Role
+Mouse::Meta::Module - The base class for Mouse::Meta::Class and Mouse::Meta::Role
=cut
+
projects / gitmo/Mouse.git / blobdiff