use Scalar::Util 'reftype', 'blessed';
use B 'svref_2object';
-our $VERSION = '0.03';
+our $VERSION = '0.04';
+our $AUTHORITY = 'cpan:STEVAN';
+
+use base 'Class::MOP::Object';
+
+# NOTE:
+# if poked in the right way,
+# they should act like CODE refs.
+use overload '&{}' => sub { $_[0]->{body} }, fallback => 1;
# introspection
my $code = shift;
('CODE' eq (reftype($code) || ''))
|| confess "You must supply a CODE reference to bless, not (" . ($code || 'undef') . ")";
- bless $code => blessed($class) || $class;
+ bless {
+ body => $code
+ } => blessed($class) || $class;
}
+## accessors
+
+sub body { (shift)->{body} }
+
+# TODO - add associated_class
+
# informational
+# NOTE:
+# this may not be the same name
+# as the class you got it from
+# This gets the package stash name
+# associated with the actual CODE-ref
sub package_name {
- my $code = shift;
- (blessed($code))
- || confess "Can only ask the package name of a blessed CODE";
+ my $code = (shift)->{body};
svref_2object($code)->GV->STASH->NAME;
}
+# NOTE:
+# this may not be the same name
+# as the method name it is stored
+# with. This gets the name associated
+# with the actual CODE-ref
sub name {
- my $code = shift;
- (blessed($code))
- || confess "Can only ask the package name of a blessed CODE";
+ my $code = (shift)->{body};
svref_2object($code)->GV->NAME;
}
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;
}
-package Class::MOP::Method::Wrapped;
-
-use strict;
-use warnings;
-
-use Carp 'confess';
-use Scalar::Util 'reftype', 'blessed';
-use Sub::Name 'subname';
-
-our $VERSION = '0.01';
-
-our @ISA = ('Class::MOP::Method');
-
-# 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};
- }
-};
-
-my %MODIFIERS;
-
-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,
- methods => [],
- },
- };
- $_build_wrapped_method->($modifier_table);
- my $method = $class->SUPER::wrap(sub { $modifier_table->{cache}->(@_) });
- $MODIFIERS{$method} = $modifier_table;
- $method;
-}
-
-sub get_original_method {
- my $code = shift;
- $MODIFIERS{$code}->{orig}
- if exists $MODIFIERS{$code};
-}
-
-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 @{$MODIFIERS{$code}->{before}} => $modifier;
- $_build_wrapped_method->($MODIFIERS{$code});
-}
-
-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 @{$MODIFIERS{$code}->{after}} => $modifier;
- $_build_wrapped_method->($MODIFIERS{$code});
-}
-
-{
- # 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 @{$MODIFIERS{$code}->{around}->{methods}} => $modifier;
- $MODIFIERS{$code}->{around}->{cache} = $compile_around_method->(
- @{$MODIFIERS{$code}->{around}->{methods}},
- $MODIFIERS{$code}->{orig}
- );
- $_build_wrapped_method->($MODIFIERS{$code});
- }
-}
-
1;
__END__
=head1 DESCRIPTION
The Method Protocol is very small, since methods in Perl 5 are just
-subroutines within the particular package. Basically all we do is to
-bless the subroutine.
-
-Currently this package is largely unused. Future plans are to provide
-some very simple introspection methods for the methods themselves.
-Suggestions for this are welcome.
+subroutines within the particular package. We provide a very basic
+introspection interface.
=head1 METHODS
=item B<wrap (&code)>
-This simply blesses the C<&code> reference passed to it.
-
=back
=head2 Informational
=over 4
+=item B<body>
+
=item B<name>
=item B<package_name>
=back
-=head1 Class::MOP::Method::Wrapped METHODS
-
-=head2 Construction
-
-=over 4
-
-=item B<wrap (&code)>
-
-This simply blesses the C<&code> reference passed to it.
-
-=item B<get_original_method>
-
-=back
-
-=head2 Modifiers
-
-=over 4
-
-=item B<add_before_modifier ($code)>
-
-=item B<add_after_modifier ($code)>
-
-=item B<add_around_modifier ($code)>
-
-=back
-
=head1 AUTHORS
Stevan Little E<lt>stevan@iinteractive.comE<gt>
projects / gitmo/Class-MOP.git / blobdiff