# construction
-sub new {
+sub wrap {
my $class = shift;
my $code = shift;
('CODE' eq (reftype($code) || ''))
- || confess "You must supply a CODE reference to bless";
+ || confess "You must supply a CODE reference to bless, not (" . ($code || 'undef') . ")";
bless $code => blessed($class) || $class;
}
svref_2object($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 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} = $around->{cache};
+ }
+};
+
my %MODIFIERS;
sub wrap {
(blessed($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 => [],
+ methods => [],
},
};
- my $method = $class->new(sub {
- $_->(@_) for @{$modifier_table->{before}};
- my (@rlist, $rval);
- if (defined wantarray) {
- if (wantarray) {
- @rlist = $modifier_table->{around}->{cache}->(@_);
- }
- else {
- $rval = $modifier_table->{around}->{cache}->(@_);
- }
- }
- else {
- $modifier_table->{around}->{cache}->(@_);
- }
- $_->(@_) for @{$modifier_table->{after}};
- return unless defined wantarray;
- return wantarray ? @rlist : $rval;
- });
+ $_build_wrapped_method->($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 $modifier = shift;
('CODE' eq (reftype($code) || ''))
|| confess "You must supply a CODE reference for a modifier";
unshift @{$MODIFIERS{$code}->{before}} => $modifier;
+ $_build_wrapped_method->($MODIFIERS{$code});
}
sub add_after_modifier {
('CODE' eq (reftype($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 $f1 unless @_;
@{$MODIFIERS{$code}->{around}->{methods}},
$MODIFIERS{$code}->{orig}
);
+ $_build_wrapped_method->($MODIFIERS{$code});
}
}
=over 4
-=item B<new (&code)>
+=item B<wrap (&code)>
This simply blesses the C<&code> reference passed to it.
-=item B<wrap>
-
-This wraps an existing method so that it can handle method modifiers.
-
=back
=head2 Informational
=item B<package_name>
+=item B<fully_qualified_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