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 base qw(Mouse::Meta::Module);
+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 _new {
+sub _construct_meta {
my($class, %args) = @_;
$args{attributes} ||= {};
#return Mouse::Meta::Class->initialize($class)->new_object(%args)
# if $class ne __PACKAGE__;
- return bless \%args, $class;
+ return bless \%args, ref($class) || $class;
}
sub create_anon_class{
@{ $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->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} = $attr;
+ my($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 {
- my $names = shift @_;
- $names = [$names] if !ref($names);
- my $metaclass = 'Mouse::Meta::Attribute';
- my %options = (@_ == 1 ? %{$_[0]} : @_);
-
- 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;
+ 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, %options);
- }
- else {
- $metaclass->create($self, $name, %options);
- }
+ $attr = $attribute_class->new($name, \%args);
}
}
+
+ weaken( $attr->{associated_class} = $self );
+
+ $self->{attributes}{$attr->name} = $attr;
+ $attr->install_accessors();
+
+ if(_MOUSE_VERBOSE && !$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(@_) }
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{$from})
+ if (defined($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};
+ $attribute->verify_against_type_constraint($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});
+ 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')
+ if _MOUSE_VERBOSE;
+ return $class->clone_object($instance, %params);
}
sub make_immutable {
sub is_immutable { $_[0]->{is_immutable} }
sub is_mutable { !$_[0]->{is_immutable} }
+sub _install_modifier_pp{
+ my( $self, $into, $type, $name, $code ) = @_;
+
+ my $original = $into->can($name)
+ or $self->throw_error("The method '$name' is not found in the inheritance hierarchy for class $into");
+
+ my $modifier_table = $self->{modifiers}{$name};
+
+ if(!$modifier_table){
+ my(@before, @after, @around, $cache, $modified);
+
+ $cache = $original;
+
+ $modified = sub {
+ for my $c (@before) { $c->(@_) }
+
+ if(wantarray){ # list context
+ my @rval = $cache->(@_);
+
+ for my $c(@after){ $c->(@_) }
+ return @rval;
+ }
+ elsif(defined wantarray){ # scalar context
+ my $rval = $cache->(@_);
+
+ for my $c(@after){ $c->(@_) }
+ return $rval;
+ }
+ else{ # void context
+ $cache->(@_);
+
+ for my $c(@after){ $c->(@_) }
+ return;
+ }
+ };
+
+ $self->{modifiers}{$name} = $modifier_table = {
+ original => $original,
+
+ before => \@before,
+ after => \@after,
+ around => \@around,
+
+ cache => \$cache, # cache for around modifiers
+ };
+
+ $self->add_method($name => $modified);
+ }
+
+ if($type eq 'before'){
+ unshift @{$modifier_table->{before}}, $code;
+ }
+ elsif($type eq 'after'){
+ push @{$modifier_table->{after}}, $code;
+ }
+ else{ # around
+ push @{$modifier_table->{around}}, $code;
+
+ my $next = ${ $modifier_table->{cache} };
+ ${ $modifier_table->{cache} } = sub{ $code->($next, @_) };
+ }
+
+ return;
+}
+
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.");
- }
+ # load Class::Method::Modifiers first
+ my $no_cmm_fast = do{
+ local $@;
+ eval q{ require Class::Method::Modifiers::Fast };
+ $@;
};
- my $modifier = $modifier_class->can('_install_modifier');
- # replace this method itself :)
- {
- no warnings 'redefine';
- *_install_modifier = sub {
+ my $impl;
+ if($no_cmm_fast){
+ $impl = \&_install_modifier_pp;
+ }
+ else{
+ my $install_modifier = Class::Method::Modifiers::Fast->can('_install_modifier');
+ $impl = sub {
my ( $self, $into, $type, $name, $code ) = @_;
- $modifier->(
+ $install_modifier->(
$into,
$type,
$name,
};
}
- # call me. for first time.
- $self->_install_modifier( $into, $type, $name, $code );
+ # replace this method itself :)
+ {
+ no warnings 'redefine';
+ *_install_modifier = $impl;
+ }
+
+ $self->$impl( $into, $type, $name, $code );
}
sub add_before_method_modifier {
=head1 NAME
-Mouse::Meta::Class - hook into the Mouse MOP
+Mouse::Meta::Class - The Mouse class metaclass
=head1 METHODS
-=head2 initialize ClassName -> Mouse::Meta::Class
+=head2 C<< initialize(ClassName) -> Mouse::Meta::Class >>
-Finds or creates a Mouse::Meta::Class instance for the given ClassName. Only
+Finds or creates a C<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
+=head2 C<< name -> ClassName >>
Returns the name of the owner class.
-=head2 superclasses -> [ClassName]
+=head2 C<< superclasses -> ClassNames >> C<< superclass(ClassNames) >>
Gets (or sets) the list of superclasses of the owner class.
-=head2 add_attribute (Mouse::Meta::Attribute| name => spec)
+=head2 C<< add_method(name => CodeRef) >>
+
+Adds a method to the owner class.
+
+=head2 C<< has_method(name) -> Bool >>
+
+Returns whether we have a method with the given name.
+
+=head2 C<< get_method(name) -> Mouse::Meta::Method | undef >>
+
+Returns a L<Mouse::Meta::Method> with the given name.
+
+Note that you can also use C<< $metaclass->name->can($name) >> for a method body.
+
+=head2 C<< get_method_list -> Names >>
+
+Returns a list of method names which are defined in the local class.
+If you want a list of all applicable methods for a class, use the
+C<get_all_methods> method.
+
+=head2 C<< get_all_methods -> (Mouse::Meta::Method) >>
+
+Return the list of all L<Mouse::Meta::Method> instances associated with
+the class and its superclasses.
+
+=head2 C<< add_attribute(name => spec | Mouse::Meta::Attribute) >>
Begins keeping track of the existing L<Mouse::Meta::Attribute> for the owner
class.
-=head2 get_all_attributes -> (Mouse::Meta::Attribute)
+=head2 C<< has_attribute(Name) -> Bool >>
-Returns the list of all L<Mouse::Meta::Attribute> instances associated with
-this class and its superclasses.
+Returns whether we have a L<Mouse::Meta::Attribute> with the given name.
-=head2 get_attribute_map -> { name => Mouse::Meta::Attribute }
+=head2 C<< get_attribute Name -> Mouse::Meta::Attribute | undef >>
-Returns a mapping of attribute names to their corresponding
-L<Mouse::Meta::Attribute> objects.
+Returns the L<Mouse::Meta::Attribute> with the given name.
-=head2 get_attribute_list -> { name => Mouse::Meta::Attribute }
+=head2 C<< get_attribute_list -> Names >>
-This returns a list of attribute names which are defined in the local
+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
+=head2 C<< get_all_attributes -> (Mouse::Meta::Attribute) >>
-Returns whether we have a L<Mouse::Meta::Attribute> with the given name.
+Returns the list of all L<Mouse::Meta::Attribute> instances associated with
+this class and its superclasses.
-=head2 get_attribute Name -> Mouse::Meta::Attribute | undef
+=head2 C<< linearized_isa -> [ClassNames] >>
-Returns the L<Mouse::Meta::Attribute> with the given name.
+Returns the list of classes in method dispatch order, with duplicates removed.
-=head2 linearized_isa -> [ClassNames]
+=head2 C<< new_object(Parameters) -> Instance >>
-Returns the list of classes in method dispatch order, with duplicates removed.
+Creates a new instance.
-=head2 clone_object Instance -> Instance
+=head2 C<< clone_object(Instance, Parameters) -> Instance >>
-Clones the given C<Instance> which must be an instance governed by this
+Clones the given instance which must be an instance governed by this
metaclass.
-=head2 clone_instance Instance, Parameters -> Instance
+=head2 C<< throw_error(Message, Parameters) >>
+
+Throws an error with the given message.
+
+=head1 SEE ALSO
+
+L<Moose::Meta::Class>
-The clone_instance method has been made private.
-The public version is deprecated.
+L<Class::MOP::Class>
=cut