use strict;
use warnings;
+use Scalar::Util qw/blessed weaken/;
+
+use Mouse::Util qw/get_linear_isa not_supported/;
+
use Mouse::Meta::Method::Constructor;
use Mouse::Meta::Method::Destructor;
-use Scalar::Util qw/blessed/;
-use Mouse::Util qw/get_linear_isa/;
-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};
- }
+use Mouse::Meta::Module;
- sub initialize {
- my $class = shift;
- my $name = shift;
- $METACLASS_CACHE{$name} = $class->new(name => $name)
- if !exists($METACLASS_CACHE{$name});
- return $METACLASS_CACHE{$name};
- }
-};
+use base qw(Mouse::Meta::Module);
+
+sub method_metaclass(){ 'Mouse::Meta::Method' } # required for get_method()
+
+sub _construct_meta {
+ my($class, %args) = @_;
-sub new {
- my $class = shift;
- my %args = @_;
+ $args{attributes} ||= {};
+ $args{methods} ||= {};
+ $args{roles} ||= [];
- $args{attributes} = {};
$args{superclasses} = do {
no strict 'refs';
- \@{ $args{name} . '::ISA' };
+ \@{ $args{package} . '::ISA' };
};
- $args{roles} ||= [];
- bless \%args, $class;
+ #return Mouse::Meta::Class->initialize($class)->new_object(%args)
+ # if $class ne __PACKAGE__;
+
+ return bless \%args, ref($class) || $class;
+}
+
+sub create_anon_class{
+ my $self = shift;
+ return $self->create(undef, @_);
+}
+
+sub is_anon_class{
+ return exists $_[0]->{anon_serial_id};
}
-sub name { $_[0]->{name} }
+sub roles { $_[0]->{roles} }
sub superclasses {
my $self = shift;
@{ $self->{superclasses} } = @_;
}
- @{ $self->{superclasses} };
+ return @{ $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 } = $code;
+sub find_method_by_name{
+ my($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;
}
-# copied from Class::Inspector
-my $get_methods_for_class = sub {
- my $self = shift;
- my $name = shift;
-
- no strict 'refs';
- # Get all the CODE symbol table entries
- my @functions =
- grep !/^(?:has|with|around|before|after|blessed|extends|confess|override|super)$/,
- 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, $self->name);
+sub get_all_methods {
+ my($self) = @_;
+ return map{ $self->find_method_by_name($self) } $self->get_all_method_names;
}
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;
}
-sub add_attribute {
+sub _process_attribute{
my $self = shift;
+ my $name = shift;
- if (@_ == 1 && blessed($_[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;
- }
- }
+ my $args = (@_ == 1) ? $_[0] : { @_ };
- for my $name (@$names) {
- if ($name =~ s/^\+//) {
- $metaclass->clone_parent($self, $name, @_);
- }
- else {
- $metaclass->create($self, $name, @_);
- }
+ defined($name)
+ or $self->throw_error('You must provide a name for the attribute');
+
+ if ($name =~ s/^\+//) {
+ 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);
+
+ return $inherited_attr->clone_and_inherit_options($name, $args);
+ }
+ else{
+ return Mouse::Meta::Attribute->interpolate_class_and_new($name, $args);
+ }
+}
+
+sub add_attribute {
+ my $self = shift;
+
+ my $attr = blessed($_[0]) ? $_[0] : $self->_process_attribute(@_);
+
+ $attr->isa('Mouse::Meta::Attribute')
+ || $self->throw_error("Your attribute must be an instance of Mouse::Meta::Attribute (or a subclass)");
+
+ weaken( $attr->{associated_class} = $self );
+
+ $self->{attributes}{$attr->name} = $attr;
+ $attr->install_accessors();
+
+ if(!$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 {
+sub compute_all_applicable_attributes { shift->get_all_attributes(@_) }
+sub get_all_attributes {
my $self = shift;
my (@attr, %seen);
return @attr;
}
-sub get_attribute_map { $_[0]->{attributes} }
-sub has_attribute { exists $_[0]->{attributes}->{$_[1]} }
-sub get_attribute { $_[0]->{attributes}->{$_[1]} }
-
sub linearized_isa { @{ get_linear_isa($_[0]->name) } }
+sub new_object {
+ my $self = shift;
+ my %args = (@_ == 1 ? %{$_[0]} : @_);
+
+ 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 $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) {
+ push @triggers_queue, [ $attribute->trigger, $args->{$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");
+ }
+ }
+ }
+ }
+
+ 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 $instance = shift;
(blessed($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, @_);
}
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;
- 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};
my $self = shift;
my %args = (
inline_constructor => 1,
+ inline_destructor => 1,
@_,
);
- my $name = $self->name;
$self->{is_immutable}++;
if ($args{inline_constructor}) {
return 1;
}
-sub make_mutable { confess "Mouse does not currently support 'make_mutable'" }
+sub make_mutable { not_supported }
-sub is_immutable { $_[0]->{is_immutable} }
-
-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 ) = @_;
# 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,
$name,
$code
);
+ $self->{methods}{$name}++; # register it to the method map
+ return;
};
}
$self->_install_modifier( $self->name, 'after', $name, $code );
}
-sub roles { $_[0]->{roles} }
-
-sub does_role {
- my ($self, $role_name) = @_;
+sub add_override_method_modifier {
+ my ($self, $name, $code) = @_;
- (defined $role_name)
- || confess "You must supply a role name to look for";
+ my $package = $self->name;
- for my $role (@{ $self->{roles} }) {
- return 1 if $role->name eq $role_name;
- }
+ my $body = $package->can($name)
+ or $self->throw_error("You cannot override '$name' because it has no super method");
- return 0;
+ $self->add_method($name => sub { $code->($package, $body, @_) });
}
-sub create {
- my ($self, $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};
-
- (ref $options{methods} eq 'HASH')
- || confess "You must pass a HASH ref of methods"
- if exists $options{methods};
+sub does_role {
+ my ($self, $role_name) = @_;
- do {
- ( defined $package_name && $package_name )
- || confess "You must pass a package name";
+ (defined $role_name)
+ || $self->throw_error("You must supply a role name to look for");
- 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};
+ for my $class ($self->linearized_isa) {
+ my $meta = Mouse::Meta::Module::class_of($class);
+ next unless $meta && $meta->can('roles');
- eval $code;
- confess "creation of $package_name failed : $@" if $@;
- };
+ for my $role (@{ $meta->roles }) {
- my %initialize_options = %options;
- delete @initialize_options{qw(
- package
- superclasses
- attributes
- methods
- version
- authority
- )};
- my $meta = $self->initialize( $package_name => %initialize_options );
-
- # FIXME totally lame
- $meta->add_method('meta' => sub {
- $self->initialize(ref($_[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 (exists $options{attributes}) {
- foreach my $attr (@{$options{attributes}}) {
- Mouse::Meta::Attribute->create($meta, $attr->{name}, %$attr);
- }
- }
- if (exists $options{methods}) {
- foreach my $method_name (keys %{$options{methods}}) {
- $meta->add_method($method_name, $options{methods}->{$method_name});
+ return 1 if $role->does_role($role_name);
}
}
- return $meta;
-}
-{
- my $ANON_CLASS_SERIAL = 0;
- my $ANON_CLASS_PREFIX = 'Mouse::Meta::Class::__ANON__::SERIAL::';
- sub create_anon_class {
- my ( $class, %options ) = @_;
- my $package_name = $ANON_CLASS_PREFIX . ++$ANON_CLASS_SERIAL;
- return $class->create( $package_name, %options );
- }
+ return 0;
}
1;
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 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