X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FMoose%2FObject.pm;h=1cd1f6acb3793a1e333551d1e54ea03f49b9cb92;hb=d68b52809b080f08e668ad5edf470ccf581a2c68;hp=06716d4a6ff0d8af49cbcf0d822544800365b839;hpb=722c9bcbe9633bbebe5b71773b8d8e574385b604;p=gitmo%2FMoose.git

diff --git a/lib/Moose/Object.pm b/lib/Moose/Object.pm
index 06716d4..1cd1f6a 100644
--- a/lib/Moose/Object.pm
+++ b/lib/Moose/Object.pm
@@ -4,72 +4,102 @@ package Moose::Object;
 use strict;
 use warnings;
 
+use Devel::GlobalDestruction ();
+use MRO::Compat ();
+use Scalar::Util ();
+use Try::Tiny ();
+
 use if ( not our $__mx_is_compiled ), 'Moose::Meta::Class';
 use if ( not our $__mx_is_compiled ), metaclass => 'Moose::Meta::Class';
 
-our $VERSION   = '0.71';
+our $VERSION   = '0.94';
 $VERSION = eval $VERSION;
 our $AUTHORITY = 'cpan:STEVAN';
 
 sub new {
     my $class = shift;
+
     my $params = $class->BUILDARGS(@_);
-    my $self = $class->meta->new_object($params);
+
+    my $real_class = Scalar::Util::blessed($class) || $class;
+    my $self = Class::MOP::Class->initialize($real_class)->new_object($params);
+
     $self->BUILDALL($params);
+
     return $self;
 }
 
 sub BUILDARGS {
     my $class = shift;
-    if (scalar @_ == 1) {
-        if (defined $_[0]) {
-            (ref($_[0]) eq 'HASH')
-                || $class->meta->throw_error("Single parameters to new() must be a HASH ref", data => $_[0]);
-            return {%{$_[0]}};
-        } 
-        else {
-            return {}; # FIXME this is compat behavior, but is it correct?
+    if ( scalar @_ == 1 ) {
+        unless ( defined $_[0] && ref $_[0] eq 'HASH' ) {
+            Class::MOP::class_of($class)->throw_error(
+                "Single parameters to new() must be a HASH ref",
+                data => $_[0] );
         }
-    } 
+        return { %{ $_[0] } };
+    }
     else {
         return {@_};
     }
 }
 
 sub BUILDALL {
-    # NOTE: we ask Perl if we even 
+    # NOTE: we ask Perl if we even
     # need to do this first, to avoid
     # extra meta level calls
-    return unless $_[0]->can('BUILD');    
+    return unless $_[0]->can('BUILD');
     my ($self, $params) = @_;
-    foreach my $method (reverse $self->meta->find_all_methods_by_name('BUILD')) {
+    foreach my $method (reverse Class::MOP::class_of($self)->find_all_methods_by_name('BUILD')) {
         $method->{code}->execute($self, $params);
     }
 }
 
 sub DEMOLISHALL {
-    my $self = shift;    
-    # NOTE: we ask Perl if we even 
+    my $self = shift;
+    my ($in_global_destruction) = @_;
+
+    # NOTE: we ask Perl if we even
     # need to do this first, to avoid
-    # extra meta level calls    
+    # extra meta level calls
     return unless $self->can('DEMOLISH');
-    foreach my $method ($self->meta->find_all_methods_by_name('DEMOLISH')) {
-        $method->{code}->execute($self);
+
+    my @isa;
+    if ( my $meta = Class::MOP::class_of($self ) ) {
+        @isa = $meta->linearized_isa;
+    } else {
+        # We cannot count on being able to retrieve a previously made
+        # metaclass, _or_ being able to make a new one during global
+        # destruction. However, we should still be able to use mro at
+        # that time (at least tests suggest so ;)
+        my $class_name = ref $self;
+        @isa = @{ mro::get_linear_isa($class_name) }
+    }
+
+    foreach my $class (@isa) {
+        no strict 'refs';
+        my $demolish = *{"${class}::DEMOLISH"}{CODE};
+        $self->$demolish($in_global_destruction)
+            if defined $demolish;
     }
 }
 
-sub DESTROY { 
-    # if we have an exception here ...
-    if ($@) {
-        # localize the $@ ...
-        local $@;
-        # run DEMOLISHALL ourselves, ...
-        $_[0]->DEMOLISHALL;
-        # and return ...
-        return;
+sub DESTROY {
+    my $self = shift;
+
+    local $?;
+
+    Try::Tiny::try {
+        $self->DEMOLISHALL(Devel::GlobalDestruction::in_global_destruction);
     }
-    # otherwise it is normal destruction
-    $_[0]->DEMOLISHALL;
+    Try::Tiny::catch {
+        # Without this, Perl will warn "\t(in cleanup)$@" because of some
+        # bizarre fucked-up logic deep in the internals.
+        no warnings 'misc';
+        die $_;
+    };
+
+    return;
 }
 
 # support for UNIVERSAL::DOES ...
@@ -82,22 +112,18 @@ BEGIN {
     }';
 }
 
-# new does() methods will be created 
+# new does() methods will be created
 # as appropiate see Moose::Meta::Role
 sub does {
     my ($self, $role_name) = @_;
-    my $meta = $self->meta;
+    my $meta = Class::MOP::class_of($self);
     (defined $role_name)
-        || $meta->throw_error("You much supply a role name to does()");
-    foreach my $class ($meta->class_precedence_list) {
-        my $m = $meta->initialize($class);
-        return 1 
-            if $m->can('does_role') && $m->does_role($role_name);            
-    }
-    return 0;   
+        || $meta->throw_error("You must supply a role name to does()");
+    return 1 if $meta->can('does_role') && $meta->does_role($role_name);
+    return 0;
 }
 
-sub dump { 
+sub dump {
     my $self = shift;
     require Data::Dumper;
     local $Data::Dumper::Maxdepth = shift if @_;
@@ -116,68 +142,78 @@ Moose::Object - The base object for Moose
 
 =head1 DESCRIPTION
 
-This serves as the base object for all Moose classes. Every 
-effort will be made to ensure that all classes which C<use Moose> 
-will inherit from this class. It provides a default constructor 
-and destructor, which run all the BUILD and DEMOLISH methods in 
-the class tree.
+This class is the default base class for all Moose-using classes. When
+you C<use Moose> in this class, your class will inherit from this
+class.
 
-You don't actually I<need> to inherit from this in order to 
-use Moose though. It is just here to make life easier.
+It provides a default constructor and destructor, which run the
+C<BUILDALL> and C<DEMOLISHALL> methods respectively.
+
+You don't actually I<need> to inherit from this in order to use Moose,
+but it makes it easier to take advantage of all of Moose's features.
 
 =head1 METHODS
 
 =over 4
 
-=item B<meta>
+=item B<< Moose::Object->new(%params) >>
+
+This method calls C<< $class->BUILDARGS(@_) >>, and then creates a new
+instance of the appropriate class. Once the instance is created, it
+calls C<< $instance->BUILDALL($params) >>.
 
-This will return the metaclass associated with the given class.
+=item B<< Moose::Object->BUILDARGS(%params) >>
 
-=item B<new>
+The default implementation of this method accepts a hash or hash
+reference of named parameters. If it receives a single argument that
+I<isn't> a hash reference it throws an error.
 
-This will call C<BUILDARGS>, create a new instance and call C<BUILDALL>.
+You can override this method in your class to handle other types of
+options passed to the constructor.
 
-=item B<BUILDARGS>
+This method should always return a hash reference of named options.
 
-This method processes an argument list into a hash reference. It is used by
-C<new>.
+=item B<< $object->BUILDALL($params) >>
 
-=item B<BUILDALL>
+This method will call every C<BUILD> method in the inheritance
+hierarchy, starting with the most distant parent class and ending with
+the object's class.
 
-This will call every C<BUILD> method in the inheritance hierarchy, 
-and pass it a hash-ref of the the C<%params> passed to C<new>.
+The C<BUILD> method will be passed the hash reference returned by
+C<BUILDARGS>.
 
-=item B<DEMOLISHALL>
+=item B<< $object->DEMOLISHALL >>
 
-This will call every C<DEMOLISH> method in the inheritance hierarchy.
+This will call every C<DEMOLISH> method in the inheritance hierarchy,
+starting with the object's class and ending with the most distant
+parent. C<DEMOLISHALL> and C<DEMOLISH> will receive a boolean
+indicating whether or not we are currently in global destruction.
 
-=item B<does ($role_name)>
+=item B<< $object->does($role_name) >>
 
-This will check if the invocant's class C<does> a given C<$role_name>. 
-This is similar to C<isa> for object, but it checks the roles instead.
+This returns true if the object does the given role.
 
 =item B<DOES ($class_or_role_name)>
 
-A Moose Role aware implementation of L<UNIVERSAL/DOES>.
+This is a a Moose role-aware implementation of L<UNIVERSAL/DOES>.
 
-C<DOES> is equivalent to C<isa> or C<does>.
+This is effectively the same as writing:
 
-=item B<dump ($maxdepth)>
+  $object->does($name) || $object->isa($name)
 
-C'mon, how many times have you written the following code while debugging:
+This method will work with Perl 5.8, which did not implement
+C<UNIVERSAL::DOES>.
 
- use Data::Dumper; 
- warn Dumper $obj;
+=item B<< $object->dump($maxdepth) >>
 
-It can get seriously annoying, so why not just use this.
+This is a handy utility for C<Data::Dumper>ing an object. By default,
+the maximum depth is 1, to avoid making a mess.
 
 =back
 
 =head1 BUGS
 
-All complex software has bugs lurking in it, and this module is no 
-exception. If you find a bug please either email me, or add the bug
-to cpan-RT.
+See L<Moose/BUGS> for details on reporting bugs.
 
 =head1 AUTHOR
 
@@ -185,11 +221,11 @@ Stevan Little E<lt>stevan@iinteractive.comE<gt>
 
 =head1 COPYRIGHT AND LICENSE
 
-Copyright 2006-2009 by Infinity Interactive, Inc.
+Copyright 2006-2010 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