package Mouse::Meta::Class;
-use strict;
-use warnings;
+use Mouse::Util qw/:meta get_linear_isa not_supported/; # enables strict and warnings
use Scalar::Util qw/blessed weaken/;
-use Mouse::Util qw/:meta get_linear_isa not_supported/;
-
-use Mouse::Meta::Method::Constructor;
-use Mouse::Meta::Method::Destructor;
use Mouse::Meta::Module;
our @ISA = qw(Mouse::Meta::Module);
-sub method_metaclass(){ 'Mouse::Meta::Method' } # required for get_method()
+sub attribute_metaclass;
+sub method_metaclass;
+
+sub constructor_class;
+sub destructor_class;
+
+my @MetaClassTypes = qw(
+ attribute_metaclass
+ method_metaclass
+ constructor_class
+ destructor_class
+);
sub _construct_meta {
my($class, %args) = @_;
- $args{attributes} ||= {};
- $args{methods} ||= {};
- $args{roles} ||= [];
+ $args{attributes} = {};
+ $args{methods} = {};
+ $args{roles} = [];
$args{superclasses} = do {
no strict 'refs';
\@{ $args{package} . '::ISA' };
};
- #return Mouse::Meta::Class->initialize($class)->new_object(%args)
- # if $class ne __PACKAGE__;
-
- return bless \%args, ref($class) || $class;
+ my $self = bless \%args, ref($class) || $class;
+ if(ref($self) ne __PACKAGE__){
+ $self->meta->_initialize_object($self, \%args);
+ }
+ return $self;
}
sub create_anon_class{
return $self->create(undef, @_);
}
-sub is_anon_class{
- return exists $_[0]->{anon_serial_id};
-}
+sub is_anon_class;
-sub roles { $_[0]->{roles} }
+sub roles;
+
+sub calculate_all_roles {
+ my $self = shift;
+ my %seen;
+ return grep { !$seen{ $_->name }++ }
+ map { $_->calculate_all_roles } @{ $self->roles };
+}
sub superclasses {
my $self = shift;
if (@_) {
- Mouse::load_class($_) for @_;
+ foreach my $super(@_){
+ Mouse::Util::load_class($super);
+ my $meta = Mouse::Util::get_metaclass_by_name($super);
+
+ next if not defined $meta;
+
+ if(Mouse::Util::is_a_metarole($meta)){
+ $self->throw_error("You cannot inherit from a Mouse Role ($super)");
+ }
+
+ next if $self->isa(ref $meta); # _superclass_meta_is_compatible
+
+ $self->_reconcile_with_superclass_meta($meta);
+ }
@{ $self->{superclasses} } = @_;
}
return @{ $self->{superclasses} };
}
+sub _reconcile_with_superclass_meta {
+ my($self, $super_meta) = @_;
+
+ # find incompatible traits
+ my @incompatibles;
+ foreach my $metaclass_type(@MetaClassTypes){
+ my $super_c = $super_meta->$metaclass_type();
+ my $self_c = $self->$metaclass_type();
+
+ if(!$super_c->isa($self_c)){
+ push @incompatibles, ($metaclass_type => $super_c);
+ }
+ }
+
+ my @roles;
+ foreach my $role($super_meta->meta->calculate_all_roles){
+ if(!$self->meta->does_role($role->name)){
+ push @roles, $role->name;
+ }
+ }
+
+ #print "reconcile($self vs. $super_meta; @roles; @incompatibles)\n";
+
+ require Mouse::Util::MetaRole;
+ Mouse::Util::MetaRole::apply_metaclass_roles(
+ for_class => $self,
+ metaclass => ref $super_meta,
+ metaclass_roles => \@roles,
+ @incompatibles,
+ );
+ return;
+}
+
sub find_method_by_name{
my($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;
$self->linearized_isa;
}
+sub find_attribute_by_name{
+ my($self, $name) = @_;
+ my $attr;
+ foreach my $class($self->linearized_isa){
+ my $meta = Mouse::Util::get_metaclass_by_name($class) or next;
+ $attr = $meta->get_attribute($name) and last;
+ }
+ return $attr;
+}
+
sub add_attribute {
my $self = shift;
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)
+ my $inherited_attr = $self->find_attribute_by_name($name)
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);
+ $attr = $inherited_attr->clone_and_inherit_options(%args);
}
else{
- my($attribute_class, @traits) = Mouse::Meta::Attribute->interpolate_class($name, \%args);
+ my($attribute_class, @traits) = $self->attribute_metaclass->interpolate_class(\%args);
$args{traits} = \@traits if @traits;
- $attr = $attribute_class->new($name, \%args);
+ $attr = $attribute_class->new($name, %args);
}
}
$self->{attributes}{$attr->name} = $attr;
$attr->install_accessors();
- if(_MOUSE_VERBOSE && !$attr->{associated_methods} && ($attr->{is} || '') ne 'bare'){
+ if(Mouse::Util::_MOUSE_VERBOSE && !$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 get_all_attributes {
- my $self = shift;
- my (@attr, %seen);
-
- for my $class ($self->linearized_isa) {
- my $meta = $self->_metaclass_cache($class)
- or next;
-
- for my $name (keys %{ $meta->get_attribute_map }) {
- next if $seen{$name}++;
- push @attr, $meta->get_attribute($name);
- }
- }
-
- return @attr;
-}
-
-sub linearized_isa { @{ get_linear_isa($_[0]->name) } }
-
-sub new_object {
- my $self = shift;
- my %args = (@_ == 1 ? %{$_[0]} : @_);
-
- my $instance = bless {}, $self->name;
+sub compute_all_applicable_attributes { # DEPRECATED
+ Carp::cluck('compute_all_applicable_attributes() has been deprecated. Use get_all_attributes() instead');
- $self->_initialize_instance($instance, \%args);
- return $instance;
+ return shift->get_all_attributes(@_)
}
-sub _initialize_instance{
- my($self, $instance, $args) = @_;
+sub linearized_isa;
- my @triggers_queue;
+sub new_object;
- foreach my $attribute ($self->get_all_attributes) {
- my $from = $attribute->init_arg;
- my $key = $attribute->name;
+sub clone_object {
+ my $class = shift;
+ my $object = shift;
+ my $args = $object->Mouse::Object::BUILDARGS(@_);
- if (defined($from) && exists($args->{$from})) {
- $instance->{$key} = $attribute->_coerce_and_verify($args->{$from});
+ (blessed($object) && $object->isa($class->name))
+ || $class->throw_error("You must pass an instance of the metaclass (" . $class->name . "), not ($object)");
- weaken($instance->{$key})
- if ref($instance->{$key}) && $attribute->is_weak_ref;
+ my $cloned = bless { %$object }, ref $object;
+ $class->_initialize_object($cloned, $args);
- if ($attribute->has_trigger) {
- push @triggers_queue, [ $attribute->trigger, $instance->{$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 $cloned;
+}
- foreach my $trigger_and_value(@triggers_queue){
- my($trigger, $value) = @{$trigger_and_value};
- $trigger->($instance, $value);
- }
+sub clone_instance { # DEPRECATED
+ my ($class, $instance, %params) = @_;
- if($self->is_anon_class){
- $instance->{__METACLASS__} = $self;
- }
+ Carp::cluck('clone_instance() has been deprecated. Use clone_object() instead');
- return $instance;
+ return $class->clone_object($instance, %params);
}
-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)");
+sub immutable_options {
+ my ( $self, @args ) = @_;
- my $clone = bless { %$instance }, ref $instance;
-
- 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};
- }
- }
- }
-
- return $clone;
+ return (
+ inline_constructor => 1,
+ inline_destructor => 1,
+ constructor_name => 'new',
+ @args,
+ );
}
-sub clone_instance {
- my ($class, $instance, %params) = @_;
-
- Carp::cluck('clone_instance has been deprecated. Use clone_object instead')
- if _MOUSE_VERBOSE;
- return $class->clone_object($instance, %params);
-}
sub make_immutable {
my $self = shift;
- my %args = (
- inline_constructor => 1,
- inline_destructor => 1,
- @_,
- );
+ my %args = $self->immutable_options(@_);
$self->{is_immutable}++;
+ $self->{strict_constructor} = $args{strict_constructor};
+
if ($args{inline_constructor}) {
- $self->add_method('new' => Mouse::Meta::Method::Constructor->generate_constructor_method_inline( $self ));
+ $self->add_method($args{constructor_name} =>
+ Mouse::Util::load_class($self->constructor_class)
+ ->_generate_constructor($self, \%args));
}
if ($args{inline_destructor}) {
- $self->add_method('DESTROY' => Mouse::Meta::Method::Destructor->generate_destructor_method_inline( $self ));
+ $self->add_method(DESTROY =>
+ Mouse::Util::load_class($self->destructor_class)
+ ->_generate_destructor($self, \%args));
}
# Moose's make_immutable returns true allowing calling code to skip setting an explicit true value
return 1;
}
-sub make_mutable { not_supported }
+sub make_mutable {
+ my($self) = @_;
+ $self->{is_immutable} = 0;
+ return;
+}
-sub is_immutable { $_[0]->{is_immutable} }
-sub is_mutable { !$_[0]->{is_immutable} }
+sub is_immutable;
+sub is_mutable { !$_[0]->is_immutable }
sub _install_modifier_pp{
- my( $self, $into, $type, $name, $code ) = @_;
+ my( $self, $type, $name, $code ) = @_;
+ my $into = $self->name;
my $original = $into->can($name)
or $self->throw_error("The method '$name' is not found in the inheritance hierarchy for class $into");
}
sub _install_modifier {
- my ( $self, $into, $type, $name, $code ) = @_;
+ my ( $self, $type, $name, $code ) = @_;
# load Class::Method::Modifiers first
my $no_cmm_fast = do{
local $@;
- eval q{ require Class::Method::Modifiers::Fast };
+ eval q{ use Class::Method::Modifiers::Fast 0.041 () };
$@;
};
$impl = \&_install_modifier_pp;
}
else{
- my $install_modifier = Class::Method::Modifiers::Fast->can('_install_modifier');
+ my $install_modifier = Class::Method::Modifiers::Fast->can('install_modifier');
$impl = sub {
- my ( $self, $into, $type, $name, $code ) = @_;
- $install_modifier->(
- $into,
- $type,
- $name,
- $code
- );
- $self->{methods}{$name}++; # register it to the method map
+ my ( $self, $type, $name, $code ) = @_;
+ my $into = $self->name;
+ $install_modifier->($into, $type, $name, $code);
+
+ $self->add_method($name => do{
+ no strict 'refs';
+ \&{ $into . '::' . $name };
+ });
return;
};
}
*_install_modifier = $impl;
}
- $self->$impl( $into, $type, $name, $code );
+ $self->$impl( $type, $name, $code );
}
sub add_before_method_modifier {
my ( $self, $name, $code ) = @_;
- $self->_install_modifier( $self->name, 'before', $name, $code );
+ $self->_install_modifier( 'before', $name, $code );
}
sub add_around_method_modifier {
my ( $self, $name, $code ) = @_;
- $self->_install_modifier( $self->name, 'around', $name, $code );
+ $self->_install_modifier( 'around', $name, $code );
}
sub add_after_method_modifier {
my ( $self, $name, $code ) = @_;
- $self->_install_modifier( $self->name, 'after', $name, $code );
+ $self->_install_modifier( 'after', $name, $code );
}
sub add_override_method_modifier {
my ($self, $name, $code) = @_;
+ if($self->has_method($name)){
+ $self->throw_error("Cannot add an override method if a local method is already present");
+ }
+
my $package = $self->name;
- my $body = $package->can($name)
+ my $super_body = $package->can($name)
or $self->throw_error("You cannot override '$name' because it has no super method");
- $self->add_method($name => sub { $code->($package, $body, @_) });
+ $self->add_method($name => sub {
+ local $Mouse::SUPER_PACKAGE = $package;
+ local $Mouse::SUPER_BODY = $super_body;
+ local @Mouse::SUPER_ARGS = @_;
+
+ $code->(@_);
+ });
+ return;
+}
+
+sub add_augment_method_modifier {
+ my ($self, $name, $code) = @_;
+ if($self->has_method($name)){
+ $self->throw_error("Cannot add an augment method if a local method is already present");
+ }
+
+ my $super = $self->find_method_by_name($name)
+ or $self->throw_error("You cannot augment '$name' because it has no super method");
+
+ my $super_package = $super->package_name;
+ my $super_body = $super->body;
+
+ $self->add_method($name => sub{
+ local $Mouse::INNER_BODY{$super_package} = $code;
+ local $Mouse::INNER_ARGS{$super_package} = [@_];
+ $super_body->(@_);
+ });
+ return;
}
sub does_role {
|| $self->throw_error("You must supply a role name to look for");
for my $class ($self->linearized_isa) {
- my $meta = Mouse::Meta::Module::class_of($class);
- next unless $meta && $meta->can('roles');
+ my $meta = Mouse::Util::get_metaclass_by_name($class)
+ or next;
for my $role (@{ $meta->roles }) {
}
1;
-
__END__
=head1 NAME
Mouse::Meta::Class - The Mouse class metaclass
+=head1 VERSION
+
+This document describes Mouse version 0.50_03
+
=head1 METHODS
=head2 C<< initialize(ClassName) -> Mouse::Meta::Class >>
=head1 SEE ALSO
+L<Mouse::Meta::Module>
+
L<Moose::Meta::Class>
L<Class::MOP::Class>
projects / gitmo/Mouse.git / blobdiff