package Mouse::Meta::Class;
-use Mouse::Util qw/:meta get_linear_isa not_supported/; # enables strict and warnings
+use Mouse::Util qw/:meta/; # enables strict and warnings
-use Scalar::Util qw/blessed weaken/;
+use Scalar::Util ();
use Mouse::Meta::Module;
our @ISA = qw(Mouse::Meta::Module);
foreach my $super(@_){
Mouse::Util::load_class($super);
my $meta = Mouse::Util::get_metaclass_by_name($super);
+ next if $self->verify_superclass($super, $meta);
+ $self->_reconcile_with_superclass_meta($meta);
+ }
+ return @{ $self->{superclasses} } = @_;
+ }
- next if not defined $meta;
-
- if(Mouse::Util::is_a_metarole($meta)){
- $self->throw_error("You cannot inherit from a Mouse Role ($super)");
- }
+ return @{ $self->{superclasses} };
+}
- next if $self->isa(ref $meta); # _superclass_meta_is_compatible
+sub verify_superclass {
+ my($self, $super, $super_meta) = @_;
- $self->_reconcile_with_superclass_meta($meta);
+ if(defined $super_meta) {
+ if(Mouse::Util::is_a_metarole($super_meta)){
+ $self->throw_error("You cannot inherit from a Mouse Role ($super)");
}
- @{ $self->{superclasses} } = @_;
+ }
+ else {
+ # The metaclass of $super is not initialized.
+ # i.e. it might be Mouse::Object, a mixin package (e.g. Exporter),
+ # or a foreign class including Moose classes.
+ # See also Mouse::Foreign::Meta::Role::Class.
+ my $mm = $super->can('meta');
+ if(!($mm && $mm == \&Mouse::Util::meta)) {
+ if($super->can('new') or $super->can('DESTROY')) {
+ $self->inherit_from_foreign_class($super);
+ }
+ }
+ return 1; # always ok
}
- return @{ $self->{superclasses} };
+ return $self->isa(ref $super_meta); # checks metaclass compatibility
+}
+
+sub inherit_from_foreign_class {
+ my($class, $super) = @_;
+ if($ENV{PERL_MOUSE_STRICT}) {
+ Carp::carp("You inherit from non-Mouse class ($super),"
+ . " but it is unlikely to work correctly."
+ . " Please consider using MouseX::Foreign");
+ }
+ return;
}
+
my @MetaClassTypes = (
'attribute', # Mouse::Meta::Attribute
'method', # Mouse::Meta::Method
}
-sub find_method_by_name{
+sub find_method_by_name {
my($self, $method_name) = @_;
defined($method_name)
or $self->throw_error('You must define a method name to find');
$self->linearized_isa;
}
-sub find_attribute_by_name{
+sub find_attribute_by_name {
my($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;
+ defined($name)
+ or $self->throw_error('You must define an attribute name to find');
+ foreach my $attr($self->get_all_attributes) {
+ return $attr if $attr->name eq $name;
}
- return $attr;
+ return undef;
}
sub add_attribute {
my($attr, $name);
- if(blessed $_[0]){
+ if(Scalar::Util::blessed($_[0])){
$attr = $_[0];
$attr->isa('Mouse::Meta::Attribute')
}
}
- weaken( $attr->{associated_class} = $self );
+ Scalar::Util::weaken( $attr->{associated_class} = $self );
- $self->{attributes}{$attr->name} = $attr;
+ # install accessors first
$attr->install_accessors();
+ # then register the attribute to the metaclass
+ $attr->{insertion_order} = keys %{ $self->{attributes} };
+ $self->{attributes}{$name} = $attr;
+ $self->_invalidate_metaclass_cache();
+
if(!$attr->{associated_methods} && ($attr->{is} || '') ne 'bare'){
Carp::carp(qq{Attribute ($name) of class }.$self->name
.qq{ has no associated methods (did you mean to provide an "is" argument?)});
return $attr;
}
-sub compute_all_applicable_attributes { # DEPRECATED
- Carp::cluck('compute_all_applicable_attributes() has been deprecated. Use get_all_attributes() instead');
-
- return shift->get_all_attributes(@_)
+sub _calculate_all_attributes {
+ my($self) = @_;
+ my %seen;
+ my @all_attrs;
+ foreach my $class($self->linearized_isa) {
+ my $meta = Mouse::Util::get_metaclass_by_name($class) or next;
+ my @attrs = grep { !$seen{$_->name}++ } values %{$meta->{attributes}};
+ @attrs = sort {
+ $b->{insertion_order} <=> $a->{insertion_order}
+ } @attrs;
+ push @all_attrs, @attrs;
+ }
+ return [reverse @all_attrs];
}
sub linearized_isa;
sub new_object;
sub clone_object;
-
-sub clone_instance { # DEPRECATED
- my ($class, $instance, %params) = @_;
-
- Carp::cluck('clone_instance() has been deprecated. Use clone_object() instead');
-
- return $class->clone_object($instance, %params);
-}
-
-
sub immutable_options {
my ( $self, @args ) = @_;
);
}
-
sub make_immutable {
my $self = shift;
my %args = $self->immutable_options(@_);
$self->{is_immutable}++;
- $self->{strict_constructor} = $args{strict_constructor};
-
if ($args{inline_constructor}) {
$self->add_method($args{constructor_name} =>
Mouse::Util::load_class($self->constructor_class)
->_generate_destructor($self, \%args));
}
- # Moose's make_immutable returns true allowing calling code to skip setting an explicit true value
- # at the end of a source file.
+ # Moose's make_immutable returns true allowing calling code to skip
+ # setting an explicit true value at the end of a source file.
return 1;
}
sub is_immutable;
sub is_mutable { !$_[0]->is_immutable }
-sub _install_modifier_pp{
+sub _install_modifier {
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");
+ or $self->throw_error("The method '$name' was not found in the inheritance hierarchy for $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->(@_) }
+ my(@before, @after, @around);
+ my $cache = $original;
+ my $modified = sub {
+ if(@before) {
+ for my $c (@before) { $c->(@_) }
+ }
+ unless(@after) {
+ return $cache->(@_);
+ }
if(wantarray){ # list context
my @rval = $cache->(@_);
return;
}
-sub _install_modifier {
- my ( $self, $type, $name, $code ) = @_;
-
- # load Data::Util first
- my $no_cmm_fast = do{
- local $@;
- eval q{ use Data::Util 0.55 () };
- $@;
- };
-
- my $impl;
- if($no_cmm_fast){
- $impl = \&_install_modifier_pp;
- }
- else{
- $impl = sub {
- my ( $self, $type, $name, $code ) = @_;
- my $into = $self->name;
-
- my $method = Mouse::Util::get_code_ref( $into, $name );
-
- if ( !$method || !Data::Util::subroutine_modifier($method) ) {
- unless ($method) {
- $method = $into->can($name)
- or Carp::confess("The method '$name' is not found in the inheritance hierarchy for class $into");
- }
- $method = Data::Util::modify_subroutine( $method,
- $type => [$code] );
-
- $self->add_method($name => $method);
- }
- else {
- Data::Util::subroutine_modifier( $method, $type => $code );
- $self->add_method($name => Mouse::Util::get_code_ref($into, $name));
- }
-
- return;
- };
- }
-
- # replace this method itself :)
- {
- no warnings 'redefine';
- *_install_modifier = $impl;
- }
-
- $self->$impl( $type, $name, $code );
-}
-
sub add_before_method_modifier {
my ( $self, $name, $code ) = @_;
$self->_install_modifier( 'before', $name, $code );
local $Mouse::SUPER_PACKAGE = $package;
local $Mouse::SUPER_BODY = $super_body;
local @Mouse::SUPER_ARGS = @_;
-
- $code->(@_);
+ &{$code};
});
return;
}
my $super_package = $super->package_name;
my $super_body = $super->body;
- $self->add_method($name => sub{
+ $self->add_method($name => sub {
local $Mouse::INNER_BODY{$super_package} = $code;
local $Mouse::INNER_ARGS{$super_package} = [@_];
- $super_body->(@_);
+ &{$super_body};
});
return;
}
=head1 VERSION
-This document describes Mouse version 0.61
+This document describes Mouse version 0.95
+
+=head1 DESCRIPTION
+
+This class is a meta object protocol for Mouse classes,
+which is a subset of Moose::Meta:::Class.
=head1 METHODS
projects / gitmo/Mouse.git / blobdiff