Version 1.12

[gitmo/Class-MOP.git] / lib / Class / MOP / Instance.pm

diff --git a/lib/Class/MOP/Instance.pm b/lib/Class/MOP/Instance.pm
index 5b94b63..e64a4c2 100644 (file)
--- a/lib/Class/MOP/Instance.pm
+++ b/lib/Class/MOP/Instance.pm
@@ -6,12 +6,15 @@ use warnings;
 
 use Scalar::Util 'weaken', 'blessed';
 
-our $VERSION   = '0.97_01';
+our $VERSION   = '1.12';
 $VERSION = eval $VERSION;
 our $AUTHORITY = 'cpan:STEVAN';
 
 use base 'Class::MOP::Object';
 
+# make this not a valid method name, to avoid (most) attribute conflicts
+my $RESERVED_MOP_SLOT = '<<MOP>>';
+
 sub BUILDARGS {
     my ($class, @args) = @_;
 
@@ -161,6 +164,21 @@ sub is_dependent_on_superclasses {
     return; # for meta instances that require updates on inherited slot changes
 }
 
+sub _get_mop_slot {
+    my ($self, $instance) = @_;
+    $self->get_slot_value($instance, $RESERVED_MOP_SLOT);
+}
+
+sub _set_mop_slot {
+    my ($self, $instance, $value) = @_;
+    $self->set_slot_value($instance, $RESERVED_MOP_SLOT, $value);
+}
+
+sub _clear_mop_slot {
+    my ($self, $instance) = @_;
+    $self->deinitialize_slot($instance, $RESERVED_MOP_SLOT);
+}
+
 # inlinable operation snippets
 
 sub is_inlinable { 1 }
@@ -175,6 +193,8 @@ sub inline_slot_access {
     sprintf q[%s->{"%s"}], $instance, quotemeta($slot_name);
 }
 
+sub inline_get_is_lvalue { 1 }
+
 sub inline_get_slot_value {
     my ($self, $instance, $slot_name) = @_;
     $self->inline_slot_access($instance, $slot_name);
@@ -214,6 +234,21 @@ sub inline_rebless_instance_structure {
     "bless $instance => $class_variable";
 }
 
+sub _inline_get_mop_slot {
+    my ($self, $instance) = @_;
+    $self->inline_get_slot_value($instance, $RESERVED_MOP_SLOT);
+}
+
+sub _inline_set_mop_slot {
+    my ($self, $instance, $value) = @_;
+    $self->inline_set_slot_value($instance, $RESERVED_MOP_SLOT, $value);
+}
+
+sub _inline_clear_mop_slot {
+    my ($self, $instance) = @_;
+    $self->inline_deinitialize_slot($instance, $RESERVED_MOP_SLOT);
+}
+
 1;
 
 __END__
@@ -360,6 +395,11 @@ actual class name.
 It returns a snippet of code that creates a new object for the
 class. This is something like C< bless {}, $class_name >.
 
+=item B<< $metainstance->inline_get_is_lvalue >>
+
+Returns whether or not C<inline_get_slot_value> is a valid lvalue. This can be
+used to do extra optimizations when generating inlined methods.
+
 =item B<< $metainstance->inline_slot_access($instance_variable, $slot_name) >>
 
 =item B<< $metainstance->inline_get_slot_value($instance_variable, $slot_name) >>