X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FClass%2FMOP%2FInstance.pm;h=7a709911c533c574e227d15787925f3b6c05b7b4;hb=98bf345be99307c66d4e8c3ff6e40e3d2bf09ce3;hp=2da9b3c2ab9d3755518873c1db4438ac31d41a5b;hpb=3d9e46468e384bb12661e1b9df7a22ab8f8ee839;p=gitmo%2FClass-MOP.git

diff --git a/lib/Class/MOP/Instance.pm b/lib/Class/MOP/Instance.pm
index 2da9b3c..7a70991 100644
--- a/lib/Class/MOP/Instance.pm
+++ b/lib/Class/MOP/Instance.pm
@@ -6,13 +6,10 @@ use warnings;
 
 use Scalar::Util 'weaken', 'blessed';
 
-our $VERSION   = '0.03';
+our $VERSION   = '0.05';
 our $AUTHORITY = 'cpan:STEVAN';
 
-sub meta {
-    require Class::MOP::Class;
-    Class::MOP::Class->initialize(blessed($_[0]) || $_[0]);
-}
+use base 'Class::MOP::Object';
 
 sub new {
     my ($class, $meta, @attrs) = @_;
@@ -63,14 +60,14 @@ sub get_all_slots {
 
 sub is_valid_slot {
     my ($self, $slot_name) = @_;
-    exists $self->{'@!slots'}->{$slot_name} ? 1 : 0;
+    exists $self->{'@!slots'}->{$slot_name};
 }
 
 # operations on created instances
 
 sub get_slot_value {
     my ($self, $instance, $slot_name) = @_;
-    $self->is_slot_initialized($instance, $slot_name) ? $instance->{$slot_name} : undef;
+    $instance->{$slot_name};
 }
 
 sub set_slot_value {
@@ -104,7 +101,7 @@ sub deinitialize_all_slots {
 
 sub is_slot_initialized {
     my ($self, $instance, $slot_name, $value) = @_;
-    exists $instance->{$slot_name} ? 1 : 0;
+    exists $instance->{$slot_name};
 }
 
 sub weaken_slot_value {
@@ -138,8 +135,7 @@ sub inline_slot_access {
 
 sub inline_get_slot_value {
     my ($self, $instance, $slot_name) = @_;
-    'exists ' . $self->inline_slot_access($instance, $slot_name) .
-    ' ? ' . $self->inline_slot_access($instance, $slot_name) . ' : undef'
+    $self->inline_slot_access($instance, $slot_name);
 }
 
 sub inline_set_slot_value {
@@ -158,7 +154,7 @@ sub inline_deinitialize_slot {
 }
 sub inline_is_slot_initialized {
     my ($self, $instance, $slot_name) = @_;
-    "exists " . $self->inline_slot_access($instance, $slot_name) . " ? 1 : 0";
+    "exists " . $self->inline_slot_access($instance, $slot_name);
 }
 
 sub inline_weaken_slot_value {
@@ -181,26 +177,15 @@ __END__
 
 Class::MOP::Instance - Instance Meta Object
 
-=head1 SYNOPSIS
-
-  # for the most part, this protocol is internal
-  # and not for public usage, but this how one
-  # might use it
-
-  package Foo;
-
-  use strict;
-  use warnings;
-  use metaclass (
-      ':instance_metaclass'  => 'ArrayBasedStorage::Instance',
-  );
-
-  # now Foo->new produces blessed ARRAY ref based objects
-
 =head1 DESCRIPTION
 
-This is a sub-protocol which governs instance creation
-and access to the slots of the instance structure.
+The meta instance is used by attributes for low level storage.
+
+Using this API generally violates attribute encapsulation and is not
+recommended, instead look at L<Class::MOP::Attribute/get_value>,
+L<Class::MOP::Attribute/set_value> for the recommended way to fiddle with
+attribute values in a generic way, independent of how/whether accessors have
+been defined. Accessors can be found using L<Class::MOP::Class/get_attribute>.
 
 This may seem like over-abstraction, but by abstracting
 this process into a sub-protocol we make it possible to
@@ -241,9 +226,11 @@ This does just exactly what it says it does.
 
 =item B<clone_instance ($instance_structure)>
 
+This too does just exactly what it says it does.
+
 =back
 
-=head2 Instrospection
+=head2 Introspection
 
 NOTE: There might be more methods added to this part of the API,
 we will add then when we need them basically.
@@ -252,6 +239,8 @@ we will add then when we need them basically.
 
 =item B<associated_metaclass>
 
+This returns the metaclass associated with this instance.
+
 =item B<get_all_slots>
 
 This will return the current list of slots based on what was
@@ -259,6 +248,8 @@ given to this object in C<new>.
 
 =item B<is_valid_slot ($slot_name)>
 
+This will return true if C<$slot_name> is a valid slot name.
+
 =back
 
 =head2 Operations on Instance Structures
@@ -268,6 +259,10 @@ instance meta-object is a different entity from the actual
 instance it creates. For this reason, any actions on slots
 require that the C<$instance_structure> is passed into them.
 
+The names of these methods pretty much explain exactly 
+what they do, if that is not enough then I suggest reading 
+the source, it is very straightfoward.
+
 =over 4
 
 =item B<get_slot_value ($instance_structure, $slot_name)>
@@ -288,23 +283,19 @@ require that the C<$instance_structure> is passed into them.
 
 =item B<strengthen_slot_value ($instance_structure, $slot_name)>
 
+=item B<rebless_instance_structure ($instance_structure, $new_metaclass)>
+
 =back
 
 =head2 Inlineable Instance Operations
 
-This part of the API is currently un-used. It is there for use
-in future experiments in class finailization mostly. Best to
-ignore this for now.
-
 =over 4
 
 =item B<is_inlinable>
 
 Each meta-instance should override this method to tell Class::MOP if it's
-possible to inline the slot access.
-
-This is currently only used by Class::MOP::Class::Immutable when performing
-optimizations.
+possible to inline the slot access. This is currently only used by 
+L<Class::MOP::Immutable> when performing optimizations.
 
 =item B<inline_create_instance>