use warnings;
use Carp 'confess';
-use Scalar::Util 'reftype', 'blessed';
-use B 'svref_2object';
+use Scalar::Util 'weaken';
-our $VERSION = '0.03';
+our $VERSION = '0.78';
+$VERSION = eval $VERSION;
our $AUTHORITY = 'cpan:STEVAN';
-use overload '&{}' => sub { $_[0]->{body} },
- fallback => 1;
+use base 'Class::MOP::Object';
-# introspection
-
-sub meta {
- require Class::MOP::Class;
- Class::MOP::Class->initialize(blessed($_[0]) || $_[0]);
-}
+# NOTE:
+# if poked in the right way,
+# they should act like CODE refs.
+use overload '&{}' => sub { $_[0]->body }, fallback => 1;
+
+our $UPGRADE_ERROR_TEXT = q{
+---------------------------------------------------------
+NOTE: this error is likely not an error, but a regression
+caused by the latest upgrade to Moose/Class::MOP. Consider
+upgrading any MooseX::* modules to their latest versions
+before spending too much time chasing this one down.
+---------------------------------------------------------
+};
# construction
-sub wrap {
- my $class = shift;
- my $code = shift;
- ('CODE' eq (reftype($code) || ''))
+sub wrap {
+ my ( $class, @args ) = @_;
+
+ unshift @args, 'body' if @args % 2 == 1;
+
+ my %params = @args;
+ my $code = $params{body};
+
+ ('CODE' eq ref($code))
|| confess "You must supply a CODE reference to bless, not (" . ($code || 'undef') . ")";
- bless {
- body => $code
- } => blessed($class) || $class;
-}
-sub body { (shift)->{body} }
+ ($params{package_name} && $params{name})
+ || confess "You must supply the package_name and name parameters $UPGRADE_ERROR_TEXT";
-# informational
+ my $self = $class->_new(\%params);
-sub package_name {
- my $code = shift->{body};
-# (blessed($code))
-# || confess "Can only ask the package name of a blessed CODE";
- svref_2object($code)->GV->STASH->NAME;
-}
+ weaken($self->{associated_metaclass}) if $self->{associated_metaclass};
-sub name {
- my $code = shift->{body};
-# (blessed($code))
-# || confess "Can only ask the package name of a blessed CODE";
- svref_2object($code)->GV->NAME;
+ return $self;
}
-sub fully_qualified_name {
- my $code = shift;
-# (blessed($code))
-# || confess "Can only ask the package name of a blessed CODE";
- $code->package_name . '::' . $code->name;
+sub _new {
+ my $class = shift;
+ my $params = @_ == 1 ? $_[0] : {@_};
+
+ my $self = bless {
+ 'body' => $params->{body},
+ 'associated_metaclass' => $params->{associated_metaclass},
+ 'package_name' => $params->{package_name},
+ 'name' => $params->{name},
+ } => $class;
}
-package Class::MOP::Method::Wrapped;
+## accessors
-use strict;
-use warnings;
+sub body { (shift)->{'body'} }
-use Carp 'confess';
-use Scalar::Util 'reftype', 'blessed';
-use Sub::Name 'subname';
+sub associated_metaclass { shift->{'associated_metaclass'} }
-our $VERSION = '0.01';
+sub attach_to_class {
+ my ( $self, $class ) = @_;
+ $self->{associated_metaclass} = $class;
+ weaken($self->{associated_metaclass});
+}
-use base 'Class::MOP::Method';
+sub detach_from_class {
+ my $self = shift;
+ delete $self->{associated_metaclass};
+}
-# NOTE:
-# this ugly beast is the result of trying
-# to micro optimize this as much as possible
-# while not completely loosing maintainability.
-# At this point it's "fast enough", after all
-# you can't get something for nothing :)
-my $_build_wrapped_method = sub {
- my $modifier_table = shift;
- my ($before, $after, $around) = (
- $modifier_table->{before},
- $modifier_table->{after},
- $modifier_table->{around},
- );
- if (@$before && @$after) {
- $modifier_table->{cache} = sub {
- $_->(@_) for @{$before};
- my @rval;
- ((defined wantarray) ?
- ((wantarray) ?
- (@rval = $around->{cache}->(@_))
- :
- ($rval[0] = $around->{cache}->(@_)))
- :
- $around->{cache}->(@_));
- $_->(@_) for @{$after};
- return unless defined wantarray;
- return wantarray ? @rval : $rval[0];
- }
- }
- elsif (@$before && !@$after) {
- $modifier_table->{cache} = sub {
- $_->(@_) for @{$before};
- return $around->{cache}->(@_);
- }
- }
- elsif (@$after && !@$before) {
- $modifier_table->{cache} = sub {
- my @rval;
- ((defined wantarray) ?
- ((wantarray) ?
- (@rval = $around->{cache}->(@_))
- :
- ($rval[0] = $around->{cache}->(@_)))
- :
- $around->{cache}->(@_));
- $_->(@_) for @{$after};
- return unless defined wantarray;
- return wantarray ? @rval : $rval[0];
- }
- }
- else {
- $modifier_table->{cache} = $around->{cache};
- }
-};
+sub package_name { (shift)->{'package_name'} }
-sub wrap {
- my $class = shift;
- my $code = shift;
- (blessed($code) && $code->isa('Class::MOP::Method'))
- || confess "Can only wrap blessed CODE";
- my $modifier_table = {
- cache => undef,
- orig => $code,
- before => [],
- after => [],
- around => {
- cache => $code->body,
- methods => [],
- },
- };
- $_build_wrapped_method->($modifier_table);
- my $method = $class->SUPER::wrap(sub { $modifier_table->{cache}->(@_) });
- $method->{modifier_table} = $modifier_table;
- $method;
+sub name { (shift)->{'name'} }
+
+sub fully_qualified_name {
+ my $self = shift;
+ $self->package_name . '::' . $self->name;
}
-sub get_original_method {
- my $code = shift;
- $code->{modifier_table}->{orig};
+sub original_method { (shift)->{'original_method'} }
+
+sub _set_original_method { $_[0]->{'original_method'} = $_[1] }
+
+# It's possible that this could cause a loop if there is a circular
+# reference in here. That shouldn't ever happen in normal
+# circumstances, since original method only gets set when clone is
+# called. We _could_ check for such a loop, but it'd involve some sort
+# of package-lexical variable, and wouldn't be terribly subclassable.
+sub original_package_name {
+ my $self = shift;
+
+ $self->original_method
+ ? $self->original_method->original_package_name
+ : $self->package_name;
}
-sub add_before_modifier {
- my $code = shift;
- my $modifier = shift;
- #(exists $MODIFIERS{$code})
- # || confess "You must first wrap your method before adding a modifier";
- (blessed($code))
- || confess "Can only ask the package name of a blessed CODE";
- #('CODE' eq (reftype($code) || ''))
- # || confess "You must supply a CODE reference for a modifier";
- unshift @{$code->{modifier_table}->{before}} => $modifier;
- $_build_wrapped_method->($code->{modifier_table});
+sub original_name {
+ my $self = shift;
+
+ $self->original_method
+ ? $self->original_method->original_name
+ : $self->name;
}
-sub add_after_modifier {
- my $code = shift;
- my $modifier = shift;
- #(exists $MODIFIERS{$code})
- # || confess "You must first wrap your method before adding a modifier";
- (blessed($code))
- || confess "Can only ask the package name of a blessed CODE";
- #('CODE' eq (reftype($code) || ''))
- # || confess "You must supply a CODE reference for a modifier";
- push @{$code->{modifier_table}->{after}} => $modifier;
- $_build_wrapped_method->($code->{modifier_table});
+sub original_fully_qualified_name {
+ my $self = shift;
+
+ $self->original_method
+ ? $self->original_method->original_fully_qualified_name
+ : $self->fully_qualified_name;
}
-{
- # NOTE:
- # this is another possible canidate for
- # optimization as well. There is an overhead
- # associated with the currying that, if
- # eliminated might make around modifiers
- # more manageable.
- my $compile_around_method = sub {{
- my $f1 = pop;
- return $f1 unless @_;
- my $f2 = pop;
- push @_, sub { $f2->( $f1, @_ ) };
- redo;
- }};
-
- sub add_around_modifier {
- my $code = shift;
- my $modifier = shift;
- #(exists $MODIFIERS{$code})
- # || confess "You must first wrap your method before adding a modifier";
- (blessed($code))
- || confess "Can only ask the package name of a blessed CODE";
- #('CODE' eq (reftype($code) || ''))
- # || confess "You must supply a CODE reference for a modifier";
- unshift @{$code->{modifier_table}->{around}->{methods}} => $modifier;
- $code->{modifier_table}->{around}->{cache} = $compile_around_method->(
- @{$code->{modifier_table}->{around}->{methods}},
- $code->{modifier_table}->{orig}->body
- );
- $_build_wrapped_method->($code->{modifier_table});
- }
+sub execute {
+ my $self = shift;
+ $self->body->(@_);
}
+# NOTE:
+# the Class::MOP bootstrap
+# will create this for us
+# - SL
+# sub clone { ... }
+
1;
__END__
=pod
-=head1 NAME
+=head1 NAME
Class::MOP::Method - Method Meta Object
-=head1 SYNOPSIS
-
- # ... more to come later maybe
-
=head1 DESCRIPTION
-The Method Protocol is very small, since methods in Perl 5 are just
-subroutines within the particular package. Basically all we do is to
-bless the subroutine.
-
-Currently this package is largely unused. Future plans are to provide
-some very simple introspection methods for the methods themselves.
-Suggestions for this are welcome.
+The Method Protocol is very small, since methods in Perl 5 are just
+subroutines within the particular package. We provide a very basic
+introspection interface.
=head1 METHODS
=item B<meta>
-This will return a B<Class::MOP::Class> instance which is related
+This will return a B<Class::MOP::Class> instance which is related
to this class.
=back
=over 4
-=item B<wrap (&code)>
+=item B<wrap ($code, %params)>
-This simply blesses the C<&code> reference passed to it.
+This is the basic constructor, it returns a B<Class::MOP::Method>
+instance which wraps the given C<$code> reference. You must also set
+the C<package_name> and C<name> attributes in C<%params>.
+
+=item B<clone (%params)>
+
+This will make a copy of the object, allowing you to override
+any values by stuffing them in C<%params>.
=back
=item B<body>
+This returns the actual CODE reference of the particular instance.
+
=item B<name>
+This returns the name of the CODE reference.
+
+=item B<associated_metaclass>
+
+The metaclass of the method
+
=item B<package_name>
+This returns the package name that the CODE reference is attached to.
+
=item B<fully_qualified_name>
-=back
+This returns the fully qualified name of the CODE reference.
-=head1 Class::MOP::Method::Wrapped METHODS
+=item B<original_method>
-=head2 Construction
+If this method object was created as a clone of some other method
+object, this returns the object that was cloned.
-=over 4
+=item B<original_name>
-=item B<wrap (&code)>
+This returns the original name of the CODE reference, wherever it was
+first defined.
-This simply blesses the C<&code> reference passed to it.
+If this method is a clone of a clone (of a clone, etc.), this method
+returns the name from the I<first> method in the chain of clones.
-=item B<get_original_method>
+=item B<original_package_name>
+
+This returns the original package name that the CODE reference is
+attached to, wherever it was first defined.
+
+If this method is a clone of a clone (of a clone, etc.), this method
+returns the package name from the I<first> method in the chain of
+clones.
+
+=item B<original_fully_qualified_name>
+
+This returns the original fully qualified name of the CODE reference,
+wherever it was first defined.
+
+If this method is a clone of a clone (of a clone, etc.), this method
+returns the fully qualified name from the I<first> method in the chain
+of clones.
=back
-=head2 Modifiers
+=head2 Metaclass
=over 4
-=item B<add_before_modifier ($code)>
+=item B<attach_to_class>
+
+Sets the associated metaclass
+
+=item B<detach_from_class>
-=item B<add_after_modifier ($code)>
+Disassociates the method from the metaclass
-=item B<add_around_modifier ($code)>
+=back
+
+=head2 Miscellaneous
+
+=over 4
+
+=item B<execute>
+
+Executes the method. Be sure to pass in the instance, since the
+method expects it.
=back
Stevan Little E<lt>stevan@iinteractive.comE<gt>
-Yuval Kogman E<lt>nothingmuch@woobling.comE<gt>
-
=head1 COPYRIGHT AND LICENSE
-Copyright 2006 by Infinity Interactive, Inc.
+Copyright 2006-2008 by Infinity Interactive, Inc.
L<http://www.iinteractive.com>
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
projects / gitmo/Class-MOP.git / blobdiff