X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FMoose%2FObject.pm;h=e619d1f136d96fc7a44d08f220ff1d11a99694af;hb=48ac876af2c1991bd6cdba0d54b775a121e01725;hp=6e0de665505acdf57c0173d0879319fda723bca0;hpb=4b2189ce8dae168787b635b71a918bd64461ed7a;p=gitmo%2FMoose.git diff --git a/lib/Moose/Object.pm b/lib/Moose/Object.pm index 6e0de66..e619d1f 100644 --- a/lib/Moose/Object.pm +++ b/lib/Moose/Object.pm @@ -4,70 +4,98 @@ package Moose::Object; use strict; use warnings; +use Carp (); +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 $VERSION = '0.72'; -$VERSION = eval $VERSION; -our $AUTHORITY = 'cpan:STEVAN'; - sub new { my $class = shift; - my $params = $class->BUILDARGS(@_); - my $self = $class->meta->new_object($params); - $self->BUILDALL($params); - return $self; + my $real_class = Scalar::Util::blessed($class) || $class; + + my $params = $real_class->BUILDARGS(@_); + + return Class::MOP::Class->initialize($real_class)->new_object($params); } sub BUILDARGS { my $class = shift; if ( scalar @_ == 1 ) { unless ( defined $_[0] && ref $_[0] eq 'HASH' ) { - $class->meta->throw_error( + Class::MOP::class_of($class)->throw_error( "Single parameters to new() must be a HASH ref", data => $_[0] ); } return { %{ $_[0] } }; } + elsif ( @_ % 2 ) { + Carp::carp( + "The new() method for $class expects a hash reference or a key/value list." + . " You passed an odd number of arguments" ); + return { @_, undef }; + } 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 { + die $_; + }; + + return; } # support for UNIVERSAL::DOES ... @@ -80,22 +108,19 @@ BEGIN { }'; } -# new does() methods will be created +# new does() methods will be created # as appropiate see Moose::Meta::Role sub does { my ($self, $role_name) = @_; - my $meta = $self->meta; + my $class = Scalar::Util::blessed($self) || $self; + my $meta = Class::MOP::Class->initialize($class); (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 $Data::Dumper::Maxdepth = shift if @_; @@ -104,90 +129,77 @@ sub dump { 1; +# ABSTRACT: The base object for Moose + __END__ =pod -=head1 NAME - -Moose::Object - The base object for Moose - =head1 DESCRIPTION -This serves as the base object for all Moose classes. Every -effort will be made to ensure that all classes which C -will inherit from this class. It provides a default constructor -and destructor, which run all the BUILD and DEMOLISH methods in -the class tree. +This class is the default base class for all Moose-using classes. When +you C in this class, your class will inherit from this +class. + +It provides a default constructor and destructor, which run all of the +C and C methods in the inheritance hierarchy, +respectively. -You don't actually I to inherit from this in order to -use Moose though. It is just here to make life easier. +You don't actually I to inherit from this in order to use Moose, +but it makes it easier to take advantage of all of Moose's features. =head1 METHODS =over 4 -=item B - -This will return the metaclass associated with the given class. +=item B<< Moose::Object->new(%params|$params) >> -=item B +This method calls C<< $class->BUILDARGS(@_) >>, and then creates a new +instance of the appropriate class. Once the instance is created, it +calls C<< $instance->BUILD($params) >> for each C method in the +inheritance hierarchy. -This will call C, create a new instance and call C. +=item B<< Moose::Object->BUILDARGS(%params|$params) >> -=item B +The default implementation of this method accepts a hash or hash +reference of named parameters. If it receives a single argument that +I a hash reference it throws an error. -This method processes an argument list into a hash reference. It is used by -C. +You can override this method in your class to handle other types of +options passed to the constructor. -=item B +This method should always return a hash reference of named options. -This will call every C method in the inheritance hierarchy, -and pass it a hash-ref of the the C<%params> passed to C. +=item B<< $object->does($role_name) >> -=item B +This returns true if the object does the given role. -This will call every C method in the inheritance hierarchy. +=item B<< $object->DOES($class_or_role_name) >> -=item B +This is a a Moose role-aware implementation of L. -This will check if the invocant's class C a given C<$role_name>. -This is similar to C for object, but it checks the roles instead. +This is effectively the same as writing: -=item B + $object->does($name) || $object->isa($name) -A Moose Role aware implementation of L. +This method will work with Perl 5.8, which did not implement +C. -C is equivalent to C or C. +=item B<< $object->dump($maxdepth) >> -=item B +This is a handy utility for Cing an object. By default, +the maximum depth is 1, to avoid making a mess. -C'mon, how many times have you written the following code while debugging: +=item B<< $object->DESTROY >> - use Data::Dumper; - warn Dumper $obj; - -It can get seriously annoying, so why not just use this. +A default destructor is provided, which calls +C<< $instance->DEMOLISH($in_global_destruction) >> for each C +method in the inheritance hierarchy. =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. - -=head1 AUTHOR - -Stevan Little Estevan@iinteractive.comE - -=head1 COPYRIGHT AND LICENSE - -Copyright 2006-2009 by Infinity Interactive, Inc. - -L - -This library is free software; you can redistribute it and/or modify -it under the same terms as Perl itself. +See L for details on reporting bugs. =cut