X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?p=gitmo%2FMouse.git;a=blobdiff_plain;f=lib%2FMouse%2FObject.pm;h=0f01499a6efa7726a9b4ab5f1ab35914876f0d5d;hp=2a80b0e6ddb834fe73212e6f8b925ea9d5f7ebd9;hb=aa2d2e2c0621cdcb8b2ec7cf49beb3a9de11803c;hpb=88b6c018ca804f12a431dacf12bb52d0df169e4c diff --git a/lib/Mouse/Object.pm b/lib/Mouse/Object.pm index 2a80b0e..0f01499 100644 --- a/lib/Mouse/Object.pm +++ b/lib/Mouse/Object.pm @@ -1,87 +1,60 @@ package Mouse::Object; -use strict; -use warnings; - -use Scalar::Util 'weaken'; -use Carp 'confess'; +use Mouse::Util qw(does dump); # enables strict and warnings sub new { my $class = shift; + $class->meta->throw_error('Cannot call new() on an instance') if ref $class; + my $args = $class->BUILDARGS(@_); - my $instance = bless {}, $class; + my $meta = Mouse::Meta::Class->initialize($class); + my $self = $meta->new_object($args); - for my $attribute ($class->meta->compute_all_applicable_attributes) { - my $from = $attribute->init_arg; - my $key = $attribute->name; + # BUILDALL + if( $self->can('BUILD') ) { + for my $class (reverse $meta->linearized_isa) { + my $build = Mouse::Util::get_code_ref($class, 'BUILD') + || next; - if (defined($from) && exists($args->{$from})) { - $args->{$from} = $attribute->coerce_constraint($args->{$from}) - if $attribute->should_coerce; - $attribute->verify_against_type_constraint($args->{$from}); + $self->$build($args); + } + } - $instance->{$key} = $args->{$from}; + return $self; +} - weaken($instance->{$key}) - if ref($instance->{$key}) && $attribute->is_weak_ref; +sub DESTROY { + my $self = shift; - if ($attribute->has_trigger) { - $attribute->trigger->($instance, $args->{$from}); - } - } - else { - if ($attribute->has_default || $attribute->has_builder) { - unless ($attribute->is_lazy) { - my $default = $attribute->default; - my $builder = $attribute->builder; - my $value = $attribute->has_builder - ? $instance->$builder - : ref($default) eq 'CODE' - ? $default->($instance) - : $default; - - $value = $attribute->coerce_constraint($value) - if $attribute->should_coerce; - $attribute->verify_against_type_constraint($value); - - $instance->{$key} = $value; - - weaken($instance->{$key}) - if ref($instance->{$key}) && $attribute->is_weak_ref; - } - } - else { - if ($attribute->is_required) { - confess "Attribute (".$attribute->name.") is required"; - } - } - } - } + return unless $self->can('DEMOLISH'); # short circuit - $instance->BUILDALL($args); + local $?; - return $instance; -} + my $e = do{ + local $@; + eval{ -sub BUILDARGS { - my $class = shift; + # DEMOLISHALL - if (scalar @_ == 1) { - if (defined $_[0]) { - (ref($_[0]) eq 'HASH') - || confess "Single parameters to new() must be a HASH ref"; - return {%{$_[0]}}; - } else { - return {}; - } - } - else { - return {@_}; - } -} + # 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 ;) + + foreach my $class (@{ Mouse::Util::get_linear_isa(ref $self) }) { + my $demolish = Mouse::Util::get_code_ref($class, 'DEMOLISH') + || next; -sub DESTROY { shift->DEMOLISHALL } + $self->$demolish(); + } + }; + $@; + }; + + no warnings 'misc'; + die $e if $e; # rethrow +} sub BUILDALL { my $self = shift; @@ -90,12 +63,12 @@ sub BUILDALL { return unless $self->can('BUILD'); for my $class (reverse $self->meta->linearized_isa) { - no strict 'refs'; - no warnings 'once'; - my $code = *{ $class . '::BUILD' }{CODE} - or next; - $code->($self, @_); + my $build = Mouse::Util::get_code_ref($class, 'BUILD') + || next; + + $self->$build(@_); } + return; } sub DEMOLISHALL { @@ -104,35 +77,19 @@ sub DEMOLISHALL { # short circuit return unless $self->can('DEMOLISH'); - no strict 'refs'; - - for my $class ($self->meta->linearized_isa) { - my $code = *{ $class . '::DEMOLISH' }{CODE} - or next; - $code->($self, @_); - } -} + # 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 ;) -sub dump { - my $self = shift; - require Data::Dumper; - local $Data::Dumper::Maxdepth = shift if @_; - Data::Dumper::Dumper $self; -} + foreach my $class (@{ Mouse::Util::get_linear_isa(ref $self) }) { + my $demolish = Mouse::Util::get_code_ref($class, 'DEMOLISH') + || next; - -sub does { - my ($self, $role_name) = @_; - (defined $role_name) - || confess "You must supply a role name to does()"; - my $meta = $self->meta; - foreach my $class ($meta->linearized_isa) { - my $m = $meta->initialize($class); - return 1 - if $m->can('does_role') && $m->does_role($role_name); + $self->$demolish(); } - return 0; -}; + return; +} 1; @@ -140,47 +97,50 @@ __END__ =head1 NAME -Mouse::Object - we don't need to steenkin' constructor +Mouse::Object - The base object for Mouse classes + +=head1 VERSION + +This document describes Mouse version 0.40_05 =head1 METHODS -=head2 new arguments -> object +=head2 C<< new (Arguments) -> Object >> + +Instantiates a new C. This is obviously intended for subclasses. -Instantiates a new Mouse::Object. This is obviously intended for subclasses. +=head2 C<< BUILDARGS (Arguments) -> HashRef >> -=head2 BUILDALL \%args +Lets you override the arguments that C takes. Return a hashref of +parameters. + +=head2 C<< BUILDALL (\%args) >> -Calls L on each class in the class hierarchy. This is called at the -end of L. +Calls C on each class in the class hierarchy. This is called at the +end of C. -=head2 BUILD \%args +=head2 C<< BUILD (\%args) >> You may put any business logic initialization in BUILD methods. You don't need to redispatch or return any specific value. -=head2 BUILDARGS - -Lets you override the arguments that C takes. Return a hashref of -parameters. +=head2 C<< DEMOLISHALL >> -=head2 DEMOLISHALL +Calls C on each class in the class hierarchy. This is called at +C time. -Calls L on each class in the class hierarchy. This is called at -L time. - -=head2 DEMOLISH +=head2 C<< DEMOLISH >> You may put any business logic deinitialization in DEMOLISH methods. You don't need to redispatch or return any specific value. -=head2 does $role_name +=head2 C<< does ($role_name) -> Bool >> -This will check if the invocant's class "does" a given C<$role_name>. +This will check if the invocant's class B a given C<$role_name>. This is similar to "isa" for object, but it checks the roles instead. - -=head2 B +=head2 C< Str >> From the Moose POD: @@ -193,6 +153,9 @@ From the Moose POD: The implementation was lifted directly from Moose::Object. -=cut +=head1 SEE ALSO +L + +=cut