X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FClass%2FMOP%2FAttribute.pm;h=ce8e0cc33c929fd373aa21ffff541ec065664d51;hb=e76b01fb041ccbdd1ece1c070a6ccfb74ca1611e;hp=67e07d5494c8554a27ff6e1a0b59cca86339e62a;hpb=b25109b1bb81739adfbb5135176792bf5d0e3feb;p=gitmo%2FClass-MOP.git diff --git a/lib/Class/MOP/Attribute.pm b/lib/Class/MOP/Attribute.pm index 67e07d5..ce8e0cc 100644 --- a/lib/Class/MOP/Attribute.pm +++ b/lib/Class/MOP/Attribute.pm @@ -9,63 +9,76 @@ use Class::MOP::Method::Accessor; use Carp 'confess'; use Scalar::Util 'blessed', 'reftype', 'weaken'; -our $VERSION = '0.14'; +our $VERSION = '0.23'; our $AUTHORITY = 'cpan:STEVAN'; use base 'Class::MOP::Object'; -sub meta { +sub meta { require Class::MOP::Class; Class::MOP::Class->initialize(blessed($_[0]) || $_[0]); } # NOTE: (meta-circularity) -# This method will be replaced in the -# boostrap section of Class::MOP, by -# a new version which uses the +# This method will be replaced in the +# boostrap section of Class::MOP, by +# a new version which uses the # &Class::MOP::Class::construct_instance # method to build an attribute meta-object # which itself is described with attribute -# meta-objects. +# meta-objects. # - Ain't meta-circularity grand? :) sub new { my $class = shift; my $name = shift; - my %options = @_; - + my %options = @_; + (defined $name && $name) || confess "You must provide a name for the attribute"; - - $options{init_arg} = $name + + $options{init_arg} = $name if not exists $options{init_arg}; - - (is_default_a_coderef(\%options)) - || confess("References are not allowed as default values, you must ". - "wrap then in a CODE reference (ex: sub { [] } and not [])") - if exists $options{default} && ref $options{default}; - + if(exists $options{builder}){ + confess("builder must be a defined scalar value which is a method name") + if ref $options{builder} || !(defined $options{builder}); + confess("Setting both default and builder is not allowed.") + if exists $options{default}; + } else { + (is_default_a_coderef(\%options)) + || confess("References are not allowed as default values, you must ". + "wrap then in a CODE reference (ex: sub { [] } and not [])") + if exists $options{default} && ref $options{default}; + } + if( $options{required} and not( defined($options{builder}) || defined($options{init_arg}) || exists $options{default} ) ) { + confess("A required attribute must have either 'init_arg', 'builder', or 'default'"); + } bless { '$!name' => $name, '$!accessor' => $options{accessor}, '$!reader' => $options{reader}, - '$!writer' => $options{writer}, - '$!predicate' => $options{predicate}, - '$!clearer' => $options{clearer}, - '$!init_arg' => $options{init_arg}, - '$!default' => $options{default}, - # keep a weakened link to the + '$!writer' => $options{writer}, + '$!predicate' => $options{predicate}, + '$!clearer' => $options{clearer}, + '$!builder' => $options{builder}, + '$!init_arg' => $options{init_arg}, + '$!default' => $options{default}, + '$!initializer' => $options{initializer}, + # keep a weakened link to the # class we are associated with '$!associated_class' => undef, - # and a list of the methods + # and a list of the methods # associated with this attr '@!associated_methods' => [], + # NOTE: + # protect this from silliness + init_arg => '!............( DO NOT DO THIS )............!', } => $class; } # NOTE: -# this is a primative (and kludgy) clone operation +# this is a primative (and kludgy) clone operation # for now, it will be replaced in the Class::MOP -# bootstrap with a proper one, however we know +# bootstrap with a proper one, however we know # that this one will work fine for now. sub clone { my $self = shift; @@ -79,18 +92,57 @@ sub initialize_instance_slot { my ($self, $meta_instance, $instance, $params) = @_; my $init_arg = $self->{'$!init_arg'}; # try to fetch the init arg from the %params ... - my $val; - $val = $params->{$init_arg} if exists $params->{$init_arg}; - # if nothing was in the %params, we can use the + + # if nothing was in the %params, we can use the # attribute's default value (if it has one) - if (!defined $val && defined $self->{'$!default'}) { - $val = $self->default($instance); + if(defined $init_arg and exists $params->{$init_arg}){ + $self->_set_initial_slot_value( + $meta_instance, + $instance, + $params->{$init_arg}, + ); + } + elsif (defined $self->{'$!default'}) { + $self->_set_initial_slot_value( + $meta_instance, + $instance, + $self->default($instance), + ); + } + elsif (defined( my $builder = $self->{'$!builder'})) { + if ($builder = $instance->can($builder)) { + $self->_set_initial_slot_value( + $meta_instance, + $instance, + $instance->$builder, + ); + } + else { + confess(blessed($instance)." does not support builder method '". $self->{'$!builder'} ."' for attribute '" . $self->name . "'"); + } } - $meta_instance->set_slot_value($instance, $self->name, $val); +} + +sub _set_initial_slot_value { + my ($self, $meta_instance, $instance, $value) = @_; + + my $slot_name = $self->name; + + return $meta_instance->set_slot_value($instance, $slot_name, $value) + unless $self->has_initializer; + + my $callback = sub { + $meta_instance->set_slot_value($instance, $slot_name, $_[0]); + }; + + my $initializer = $self->initializer; + + # most things will just want to set a value, so make it first arg + $instance->$initializer($value, $callback, $self); } # NOTE: -# the next bunch of methods will get bootstrapped +# the next bunch of methods will get bootstrapped # away in the Class::MOP bootstrapping section sub name { $_[0]->{'$!name'} } @@ -98,40 +150,81 @@ sub name { $_[0]->{'$!name'} } sub associated_class { $_[0]->{'$!associated_class'} } sub associated_methods { $_[0]->{'@!associated_methods'} } -sub has_accessor { defined($_[0]->{'$!accessor'}) ? 1 : 0 } -sub has_reader { defined($_[0]->{'$!reader'}) ? 1 : 0 } -sub has_writer { defined($_[0]->{'$!writer'}) ? 1 : 0 } -sub has_predicate { defined($_[0]->{'$!predicate'}) ? 1 : 0 } -sub has_clearer { defined($_[0]->{'$!clearer'}) ? 1 : 0 } -sub has_init_arg { defined($_[0]->{'$!init_arg'}) ? 1 : 0 } -sub has_default { defined($_[0]->{'$!default'}) ? 1 : 0 } - -sub accessor { $_[0]->{'$!accessor'} } -sub reader { $_[0]->{'$!reader'} } -sub writer { $_[0]->{'$!writer'} } -sub predicate { $_[0]->{'$!predicate'} } -sub clearer { $_[0]->{'$!clearer'} } -sub init_arg { $_[0]->{'$!init_arg'} } +sub has_accessor { defined($_[0]->{'$!accessor'}) ? 1 : 0 } +sub has_reader { defined($_[0]->{'$!reader'}) ? 1 : 0 } +sub has_writer { defined($_[0]->{'$!writer'}) ? 1 : 0 } +sub has_predicate { defined($_[0]->{'$!predicate'}) ? 1 : 0 } +sub has_clearer { defined($_[0]->{'$!clearer'}) ? 1 : 0 } +sub has_builder { defined($_[0]->{'$!builder'}) ? 1 : 0 } +sub has_init_arg { defined($_[0]->{'$!init_arg'}) ? 1 : 0 } +sub has_default { defined($_[0]->{'$!default'}) ? 1 : 0 } +sub has_initializer { defined($_[0]->{'$!initializer'}) ? 1 : 0 } + +sub accessor { $_[0]->{'$!accessor'} } +sub reader { $_[0]->{'$!reader'} } +sub writer { $_[0]->{'$!writer'} } +sub predicate { $_[0]->{'$!predicate'} } +sub clearer { $_[0]->{'$!clearer'} } +sub builder { $_[0]->{'$!builder'} } +sub init_arg { $_[0]->{'$!init_arg'} } +sub initializer { $_[0]->{'$!initializer'} } # end bootstrapped away method section. # (all methods below here are kept intact) -sub get_read_method { $_[0]->reader || $_[0]->accessor } -sub get_write_method { $_[0]->writer || $_[0]->accessor } +sub get_read_method { + my $self = shift; + my $reader = $self->reader || $self->accessor; + # normal case ... + return $reader unless ref $reader; + # the HASH ref case + my ($name) = %$reader; + return $name; +} + +sub get_write_method { + my $self = shift; + my $writer = $self->writer || $self->accessor; + # normal case ... + return $writer unless ref $writer; + # the HASH ref case + my ($name) = %$writer; + return $name; +} + +sub get_read_method_ref { + my $self = shift; + if ((my $reader = $self->get_read_method) && $self->associated_class) { + return $self->associated_class->get_method($reader); + } + else { + return sub { $self->get_value(@_) }; + } +} + +sub get_write_method_ref { + my $self = shift; + if ((my $writer = $self->get_write_method) && $self->associated_class) { + return $self->associated_class->get_method($writer); + } + else { + return sub { $self->set_value(@_) }; + } +} -sub is_default_a_coderef { - ('CODE' eq (reftype($_[0]->{'$!default'} || $_[0]->{default}) || '')) +sub is_default_a_coderef { + ('CODE' eq (reftype($_[0]->{'$!default'} || $_[0]->{default}) || '')) } -sub default { +sub default { my ($self, $instance) = @_; if (defined $instance && $self->is_default_a_coderef) { - # if the default is a CODE ref, then + # if the default is a CODE ref, then # we pass in the instance and default - # can return a value based on that + # can return a value based on that # instance. Somewhat crude, but works. return $self->{'$!default'}->($instance); - } + } $self->{'$!default'}; } @@ -139,21 +232,21 @@ sub default { sub slots { (shift)->name } -# class association +# class association sub attach_to_class { my ($self, $class) = @_; (blessed($class) && $class->isa('Class::MOP::Class')) || confess "You must pass a Class::MOP::Class instance (or a subclass)"; - weaken($self->{'$!associated_class'} = $class); + weaken($self->{'$!associated_class'} = $class); } sub detach_from_class { my $self = shift; - $self->{'$!associated_class'} = undef; + $self->{'$!associated_class'} = undef; } -# method association +# method association sub associate_method { my ($self, $method) = @_; @@ -162,6 +255,15 @@ sub associate_method { ## Slot management +sub set_initial_value { + my ($self, $instance, $value) = @_; + $self->_set_initial_slot_value( + Class::MOP::Class->initialize(blessed($instance))->get_meta_instance, + $instance, + $value + ); +} + sub set_value { my ($self, $instance, $value) = @_; @@ -180,18 +282,18 @@ sub get_value { sub has_value { my ($self, $instance) = @_; - - defined Class::MOP::Class->initialize(blessed($instance)) - ->get_meta_instance - ->get_slot_value($instance, $self->name) ? 1 : 0; + + Class::MOP::Class->initialize(blessed($instance)) + ->get_meta_instance + ->is_slot_initialized($instance, $self->name); } sub clear_value { my ($self, $instance) = @_; - + Class::MOP::Class->initialize(blessed($instance)) ->get_meta_instance - ->deinitialize_slot($instance, $self->name); + ->deinitialize_slot($instance, $self->name); } ## load em up ... @@ -206,34 +308,34 @@ sub process_accessors { my ($name, $method) = %{$accessor}; $method = $self->accessor_metaclass->wrap($method); $self->associate_method($method); - return ($name, $method); + return ($name, $method); } else { - my $inline_me = ($generate_as_inline_methods && $self->associated_class->instance_metaclass->is_inlinable); + my $inline_me = ($generate_as_inline_methods && $self->associated_class->instance_metaclass->is_inlinable); my $method; eval { $method = $self->accessor_metaclass->new( attribute => $self, is_inline => $inline_me, accessor_type => $type, - ); + ); }; - confess "Could not create the '$type' method for " . $self->name . " because : $@" if $@; + confess "Could not create the '$type' method for " . $self->name . " because : $@" if $@; $self->associate_method($method); return ($accessor, $method); - } + } } sub install_accessors { my $self = shift; my $inline = shift; my $class = $self->associated_class; - + $class->add_method( $self->process_accessors('accessor' => $self->accessor(), $inline) ) if $self->has_accessor(); - $class->add_method( + $class->add_method( $self->process_accessors('reader' => $self->reader(), $inline) ) if $self->has_reader(); @@ -244,11 +346,11 @@ sub install_accessors { $class->add_method( $self->process_accessors('predicate' => $self->predicate(), $inline) ) if $self->has_predicate(); - + $class->add_method( $self->process_accessors('clearer' => $self->clearer(), $inline) ) if $self->has_clearer(); - + return; } @@ -257,25 +359,25 @@ sub install_accessors { my ($accessor, $class) = @_; if (reftype($accessor) && reftype($accessor) eq 'HASH') { ($accessor) = keys %{$accessor}; - } - my $method = $class->get_method($accessor); - $class->remove_method($accessor) + } + my $method = $class->get_method($accessor); + $class->remove_method($accessor) if (blessed($method) && $method->isa('Class::MOP::Method::Accessor')); }; - + sub remove_accessors { my $self = shift; # TODO: - # we really need to make sure to remove from the - # associates methods here as well. But this is - # such a slimly used method, I am not worried + # we really need to make sure to remove from the + # associates methods here as well. But this is + # such a slimly used method, I am not worried # about it right now. $_remove_accessor->($self->accessor(), $self->associated_class()) if $self->has_accessor(); $_remove_accessor->($self->reader(), $self->associated_class()) if $self->has_reader(); $_remove_accessor->($self->writer(), $self->associated_class()) if $self->has_writer(); $_remove_accessor->($self->predicate(), $self->associated_class()) if $self->has_predicate(); $_remove_accessor->($self->clearer(), $self->associated_class()) if $self->has_clearer(); - return; + return; } } @@ -286,23 +388,23 @@ __END__ =pod -=head1 NAME +=head1 NAME Class::MOP::Attribute - Attribute Meta Object =head1 SYNOPSIS - + Class::MOP::Attribute->new('$foo' => ( accessor => 'foo', # dual purpose get/set accessor - predicate => 'has_foo' # predicate check for defined-ness + predicate => 'has_foo' # predicate check for defined-ness init_arg => '-foo', # class->new will look for a -foo key default => 'BAR IS BAZ!' # if no -foo key is provided, use this )); - + Class::MOP::Attribute->new('$.bar' => ( reader => 'bar', # getter - writer => 'set_bar', # setter - predicate => 'has_bar' # predicate check for defined-ness + writer => 'set_bar', # setter + predicate => 'has_bar' # predicate check for defined-ness init_arg => ':bar', # class->new will look for a :bar key # no default value means it is undef )); @@ -310,13 +412,13 @@ Class::MOP::Attribute - Attribute Meta Object =head1 DESCRIPTION The Attribute Protocol is almost entirely an invention of this module, -and is completely optional to this MOP. This is because Perl 5 does not -have consistent notion of what is an attribute of a class. There are -so many ways in which this is done, and very few (if any) are +and is completely optional to this MOP. This is because Perl 5 does not +have consistent notion of what is an attribute of a class. There are +so many ways in which this is done, and very few (if any) are easily discoverable by this module. -So, all that said, this module attempts to inject some order into this -chaos, by introducing a consistent API which can be used to create +So, all that said, this module attempts to inject some order into this +chaos, by introducing a consistent API which can be used to create object attributes. =head1 METHODS @@ -327,7 +429,7 @@ object attributes. =item B -An attribute must (at the very least), have a C<$name>. All other +An attribute must (at the very least), have a C<$name>. All other C<%options> are contained added as key-value pairs. Acceptable keys are as follows: @@ -335,60 +437,67 @@ are as follows: =item I -This should be a string value representing the expected key in -an initialization hash. For instance, if we have an I +This should be a string value representing the expected key in +an initialization hash. For instance, if we have an I value of C<-foo>, then the following code will Just Work. MyClass->meta->construct_instance(-foo => "Hello There"); -In an init_arg is not assigned, it will automatically use the +In an init_arg is not assigned, it will automatically use the value of C<$name>. +=item I + +The value of this key is the name of the method that will be +called to obtain the value used to initialize the attribute. +This should be a method in the class associated with the attribute, +not a method in the attribute class itself. + =item I -The value of this key is the default value which -C will initialize the -attribute to. +The value of this key is the default value which +C will initialize the +attribute to. B -If the value is a simple scalar (string or number), then it can -be just passed as is. However, if you wish to initialize it with -a HASH or ARRAY ref, then you need to wrap that inside a CODE +If the value is a simple scalar (string or number), then it can +be just passed as is. However, if you wish to initialize it with +a HASH or ARRAY ref, then you need to wrap that inside a CODE reference, like so: Class::MOP::Attribute->new('@foo' => ( default => sub { [] }, )); - - # or ... - + + # or ... + Class::MOP::Attribute->new('%foo' => ( default => sub { {} }, - )); + )); -If you wish to initialize an attribute with a CODE reference +If you wish to initialize an attribute with a CODE reference itself, then you need to wrap that in a subroutine as well, like so: - + Class::MOP::Attribute->new('&foo' => ( default => sub { sub { print "Hello World" } }, )); -And lastly, if the value of your attribute is dependent upon -some other aspect of the instance structure, then you can take -advantage of the fact that when the I value is a CODE -reference, it is passed the raw (unblessed) instance structure +And lastly, if the value of your attribute is dependent upon +some other aspect of the instance structure, then you can take +advantage of the fact that when the I value is a CODE +reference, it is passed the raw (unblessed) instance structure as it's only argument. So you can do things like this: Class::MOP::Attribute->new('$object_identity' => ( default => sub { Scalar::Util::refaddr($_[0]) }, )); -This last feature is fairly limited as there is no gurantee of -the order of attribute initializations, so you cannot perform -any kind of dependent initializations. However, if this is -something you need, you could subclass B and -this class to acheive it. However, this is currently left as +This last feature is fairly limited as there is no gurantee of +the order of attribute initializations, so you cannot perform +any kind of dependent initializations. However, if this is +something you need, you could subclass B and +this class to acheive it. However, this is currently left as an exercise to the reader :). =back @@ -403,40 +512,50 @@ reference which will be installed as the method itself. =item I -The I is a standard perl-style read/write accessor. It will -return the value of the attribute, and if a value is passed as an argument, +The I is a standard perl-style read/write accessor. It will +return the value of the attribute, and if a value is passed as an argument, it will assign that value to the attribute. B -This method will properly handle the following code, by assigning an +This method will properly handle the following code, by assigning an C value to the attribute. $object->set_something(undef); =item I -This is a basic read-only accessor, it will just return the value of +This is a basic read-only accessor, it will just return the value of the attribute. =item I -This is a basic write accessor, it accepts a single argument, and -assigns that value to the attribute. This method does not intentially -return a value, however perl will return the result of the last -expression in the subroutine, which returns in this returning the -same value that it was passed. +This is a basic write accessor, it accepts a single argument, and +assigns that value to the attribute. This method does not intentially +return a value, however perl will return the result of the last +expression in the subroutine, which returns in this returning the +same value that it was passed. B -This method will properly handle the following code, by assigning an +This method will properly handle the following code, by assigning an C value to the attribute. $object->set_something(); =item I -This is a basic test to see if the value of the attribute is not -C. It will return true (C<1>) if the attribute's value is -defined, and false (C<0>) otherwise. +This is a basic test to see if any value has been set for the +attribute. It will return true (C<1>) if the attribute has been set +to any value (even C), and false (C<0>) otherwise. + +B +The predicate will return true even when you set an attribute's +value to C. This behaviour has changed as of version 0.43. In +older versions, the predicate (erroneously) checked for attribute +value definedness, instead of presence as it is now. + +If you really want to get rid of the value, you have to define and +use a I (see below). + =item I @@ -449,14 +568,14 @@ back to their "unfulfilled" state. =item B -=back +=back =head2 Value management -These methods are basically "backdoors" to the instance, which can be used -to bypass the regular accessors, but still stay within the context of the MOP. +These methods are basically "backdoors" to the instance, which can be used +to bypass the regular accessors, but still stay within the context of the MOP. -These methods are not for general use, and should only be used if you really +These methods are not for general use, and should only be used if you really know what you are doing. =over 4 @@ -466,6 +585,11 @@ know what you are doing. Set the value without going through the accessor. Note that this may be done to even attributes with just read only accessors. +=item B + +This method sets the value without going through the accessor -- but it is only +called when the instance data is first initialized. + =item B Return the value without going through the accessor. Note that this may be done @@ -473,20 +597,20 @@ even to attributes with just write only accessors. =item B -Returns a boolean indicating if the item in the C<$instance> has a value in it. +Return a boolean indicating if the item in the C<$instance> has a value in it. This is basically what the default C method calls. =item B This will clear the value in the C<$instance>. This is basically what the default -C would call. Note that this may be done even if the attirbute does not +C would call. Note that this may be done even if the attirbute does not have any associated read, write or clear methods. =back =head2 Informational -These are all basic read-only value accessors for the values +These are all basic read-only value accessors for the values passed into C. I think they are pretty much self-explanitory. =over 4 @@ -503,28 +627,43 @@ passed into C. I think they are pretty much self-explanitory. =item B +=item B + =item B =item B =item B -As noted in the documentation for C above, if the I -value is a CODE reference, this accessor will pass a single additional -argument C<$instance> into it and return the value. +Return the default value for the attribute. + +If you pass in an C<$instance> argument to this accessor and the +I is a CODE reference, then the CODE reference will be +executed with the C<$instance> as its argument. =item B -Returns a list of slots required by the attribute. This is usually +Return a list of slots required by the attribute. This is usually just one, which is the name of the attribute. =item B =item B -Return the name of a method suitable for reading / writing the value of the -attribute in the associated class. Suitable for use whether C and -C or C was used. +Return the name of a method name suitable for reading / writing the value +of the attribute in the associated class. Suitable for use whether +C and C or C was used. + +=item B + +=item B + +Return the CODE reference of a method suitable for reading / writing the +value of the attribute in the associated class. Suitable for use whether +C and C or C was specified or not. + +NOTE: If not reader/writer/accessor was specified, this will use the +attribute get_value/set_value methods, which can be very inefficient. =back @@ -544,16 +683,20 @@ These are all basic predicate methods for the values passed into C. =item B +=item B + =item B =item B +=item B + =back =head2 Class association -These methods allow you to manage the attributes association with -the class that contains it. These methods should not be used +These methods allow you to manage the attributes association with +the class that contains it. These methods should not be used lightly, nor are they very magical, they are mostly used internally and by metaclass instances. @@ -565,17 +708,17 @@ This returns the metaclass this attribute is associated with. =item B -This will store a weaken reference to C<$class> internally. You should +This will store a weaken reference to C<$class> internally. You should note that just changing the class assocation will not remove the attribute from it's old class, and initialize it (and it's accessors) in the new C<$class>. It is up to you to do this manually. =item B -This will remove the weakened reference to the class. It does B -remove the attribute itself from the class (or remove it's accessors), -you must do that yourself if you want too. Actually if that is what -you want to do, you should probably be looking at +This will remove the weakened reference to the class. It does B +remove the attribute itself from the class (or remove it's accessors), +you must do that yourself if you want too. Actually if that is what +you want to do, you should probably be looking at L instead. =back @@ -587,43 +730,43 @@ L instead. =item B Accessors are generated by an accessor metaclass, which is usually -a subclass of C. This method returns +a subclass of C. This method returns the name of the accessor metaclass that this attribute uses. =item B -This will associate a C<$method> with the given attribute which is -used internally by the accessor generator. +This will associate a C<$method> with the given attribute which is +used internally by the accessor generator. =item B -This will return the list of methods which have been associated with -the C methods. +This will return the list of methods which have been associated with +the C methods. =item B -This allows the attribute to generate and install code for it's own -I methods. This is called by +This allows the attribute to generate and install code for it's own +I methods. This is called by C. -This method will call C for each of the possible +This method will call C for each of the possible method types (accessor, reader, writer & predicate). =item B -This takes a C<$type> (accessor, reader, writer or predicate), and +This takes a C<$type> (accessor, reader, writer or predicate), and a C<$value> (the value passed into the constructor for each of the -different types). It will then either generate the method itself -(using the C methods listed below) or it will -use the custom method passed through the constructor. +different types). It will then either generate the method itself +(using the C methods listed below) or it will +use the custom method passed through the constructor. =item B -This allows the attribute to remove the method for it's own -I. This is called by +This allows the attribute to remove the method for it's own +I. This is called by C. -NOTE: This does not currently remove methods from the list returned +NOTE: This does not currently remove methods from the list returned by C, that is on the TODO list. =back @@ -634,13 +777,13 @@ by C, that is on the TODO list. =item B -This will return a B instance which is related +This will return a B instance which is related to this class. -It should also be noted that B will actually bootstrap -this module by installing a number of attribute meta-objects into -it's metaclass. This will allow this class to reap all the benifits -of the MOP when subclassing it. +It should also be noted that B will actually bootstrap +this module by installing a number of attribute meta-objects into +it's metaclass. This will allow this class to reap all the benifits +of the MOP when subclassing it. =back @@ -648,16 +791,14 @@ of the MOP when subclassing it. Stevan Little Estevan@iinteractive.comE -Yuval Kogman Enothingmuch@woobling.comE - =head1 COPYRIGHT AND LICENSE -Copyright 2006, 2007 by Infinity Interactive, Inc. +Copyright 2006-2008 by Infinity Interactive, Inc. L This library is free software; you can redistribute it and/or modify -it under the same terms as Perl itself. +it under the same terms as Perl itself. =cut