X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?p=gitmo%2FMouse.git;a=blobdiff_plain;f=lib%2FMouse%2FMeta%2FClass.pm;h=e8593f641342324a451cb92c667d7f93537cdd11;hp=765def82ec50fe707fcb1d682375c3c5cb16afc3;hb=8aba926dbf11e9cf418c7c79b925d15e60e1e990;hpb=8cf51b82d94aad02f81dc853be874e9a49a82c31 diff --git a/lib/Mouse/Meta/Class.pm b/lib/Mouse/Meta/Class.pm index 765def8..e8593f6 100644 --- a/lib/Mouse/Meta/Class.pm +++ b/lib/Mouse/Meta/Class.pm @@ -1,25 +1,23 @@ 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' } -sub attribute_metaclass() { 'Mouse::Meta::Attribute' } +sub method_metaclass; +sub attribute_metaclass; + +sub constructor_class; +sub 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'; @@ -38,17 +36,28 @@ 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); + if(Mouse::Util::is_a_metarole($meta)){ + $self->throw_error("You cannot inherit from a Mouse Role ($super)"); + } + } @{ $self->{superclasses} } = @_; } @@ -59,6 +68,7 @@ sub find_method_by_name{ my($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; @@ -79,6 +89,16 @@ sub get_all_method_names { $self->linearized_isa; } +sub find_attribute_by_name{ + my($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; @@ -102,15 +122,7 @@ sub add_attribute { or $self->throw_error('You must provide a name for the attribute'); if ($name =~ s/^\+//) { # inherited attributes - my $inherited_attr; - - # find_attribute_by_name - foreach my $class($self->linearized_isa){ - my $meta = Mouse::Util::get_metaclass_by_name($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(%args); @@ -128,100 +140,21 @@ sub add_attribute { $self->{attributes}{$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 { - Carp::cluck('compute_all_applicable_attributes() has been deprecated'); + Carp::cluck('compute_all_applicable_attributes() has been deprecated') + if Mouse::Util::_MOUSE_VERBOSE; return shift->get_all_attributes(@_) } -sub get_all_attributes { - my $self = shift; - my (@attr, %seen); - - for my $class ($self->linearized_isa) { - my $meta = Mouse::Util::get_metaclass_by_name($class) - or next; - - for my $name ($meta->get_attribute_list) { - 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 $object = bless {}, $self->name; - - $self->_initialize_object($object, \%args); - return $object; -} - -sub _initialize_object{ - my($self, $object, $args) = @_; +sub linearized_isa; - 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})) { - $object->{$key} = $attribute->_coerce_and_verify($args->{$from}); - - weaken($object->{$key}) - if ref($object->{$key}) && $attribute->is_weak_ref; - - if ($attribute->has_trigger) { - push @triggers_queue, [ $attribute->trigger, $object->{$key} ]; - } - } - else { - if ($attribute->has_default || $attribute->has_builder) { - unless ($attribute->is_lazy) { - my $default = $attribute->default; - my $builder = $attribute->builder; - my $value = $builder ? $object->$builder() - : ref($default) eq 'CODE' ? $object->$default() - : $default; - - # XXX: we cannot use $attribute->set_value() because it invokes triggers. - $object->{$key} = $attribute->_coerce_and_verify($value, $object);; - - weaken($object->{$key}) - if ref($object->{$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}; - $trigger->($object, $value); - } - - if($self->is_anon_class){ - $object->{__METACLASS__} = $self; - } - - return $object; -} +sub new_object; sub clone_object { my $class = shift; @@ -241,7 +174,7 @@ sub clone_instance { my ($class, $instance, %params) = @_; Carp::cluck('clone_instance has been deprecated. Use clone_object instead') - if _MOUSE_VERBOSE; + if Mouse::Util::_MOUSE_VERBOSE; return $class->clone_object($instance, %params); } @@ -257,13 +190,17 @@ sub make_immutable { $self->{is_immutable}++; if ($args{inline_constructor}) { - # generate and install - Mouse::Meta::Method::Constructor->_generate_constructor_method($self, \%args); + my $c = $self->constructor_class; + Mouse::Util::load_class($c); + $self->add_method($args{constructor_name} => + $c->_generate_constructor($self, \%args)); } if ($args{inline_destructor}) { - # generate and install - Mouse::Meta::Method::Destructor->_generate_destructor_method($self, \%args); + my $c = $self->destructor_class; + Mouse::Util::load_class($c); + $self->add_method(DESTROY => + $c->_generate_destructor($self, \%args)); } # Moose's make_immutable returns true allowing calling code to skip setting an explicit true value @@ -277,7 +214,8 @@ sub is_immutable { $_[0]->{is_immutable} } sub is_mutable { !$_[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"); @@ -342,7 +280,7 @@ sub _install_modifier_pp{ } sub _install_modifier { - my ( $self, $into, $type, $name, $code ) = @_; + my ( $self, $type, $name, $code ) = @_; # load Class::Method::Modifiers first my $no_cmm_fast = do{ @@ -358,14 +296,14 @@ sub _install_modifier { else{ 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; }; } @@ -376,33 +314,64 @@ sub _install_modifier { *_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 { @@ -412,8 +381,8 @@ sub does_role { || $self->throw_error("You must supply a role name to look for"); for my $class ($self->linearized_isa) { - my $meta = Mouse::Util::get_metaclass_by_name($class); - next unless $meta && $meta->can('roles'); + my $meta = Mouse::Util::get_metaclass_by_name($class) + or next; for my $role (@{ $meta->roles }) { @@ -425,13 +394,16 @@ sub does_role { } 1; - __END__ =head1 NAME Mouse::Meta::Class - The Mouse class metaclass +=head1 VERSION + +This document describes Mouse version 0.40_07 + =head1 METHODS =head2 C<< initialize(ClassName) -> Mouse::Meta::Class >>