-#!/usr/bin/env perl
package Mouse::Object;
use strict;
use warnings;
-use MRO::Compat;
-use Scalar::Util 'blessed';
+use Scalar::Util 'weaken';
use Carp 'confess';
sub new {
my $class = shift;
- my %args = @_;
+
+ my $args = $class->BUILDARGS(@_);
+
my $instance = bless {}, $class;
- for my $attribute ($class->meta->attributes) {
- my $key = $attribute->init_arg;
- my $default;
+ for my $attribute ($class->meta->get_all_attributes) {
+ my $from = $attribute->init_arg;
+ my $key = $attribute->name;
- if (!exists($args{$key})) {
- if (exists($attribute->{default}) || exists($attribute->{builder})) {
- unless ($attribute->{lazy}) {
- my $builder = $attribute->{builder};
- my $default = exists($attribute->{builder})
- ? $instance->$builder
- : ref($attribute->{default}) eq 'CODE'
- ? $attribute->{default}->()
- : $attribute->{default};
+ if (defined($from) && exists($args->{$from})) {
+ $args->{$from} = $attribute->coerce_constraint($args->{$from})
+ if $attribute->should_coerce;
+ $attribute->verify_against_type_constraint($args->{$from});
- $attribute->verify_type_constraint($default)
- if $attribute->has_type_constraint;
+ $instance->{$key} = $args->{$from};
- $instance->{$key} = $default;
+ weaken($instance->{$key})
+ if ref($instance->{$key}) && $attribute->is_weak_ref;
- Scalar::Util::weaken($instance->{$key})
- if $attribute->{weak_ref};
+ if ($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->{required}) {
- confess "Attribute '$attribute->{name}' is required";
+ if ($attribute->is_required) {
+ confess "Attribute (".$attribute->name.") is required";
}
}
}
+ }
- if (exists($args{$key})) {
- $attribute->verify_type_constraint($args{$key})
- if $attribute->has_type_constraint;
+ $instance->BUILDALL($args);
- $instance->{$key} = $args{$key};
+ return $instance;
+}
- Scalar::Util::weaken($instance->{$key})
- if $attribute->{weak_ref};
+sub BUILDARGS {
+ my $class = shift;
- if ($attribute->{trigger}) {
- $attribute->{trigger}->($instance, $args{$key}, $attribute);
- }
- }
+ if (scalar @_ == 1) {
+ (ref($_[0]) eq 'HASH')
+ || confess "Single parameters to new() must be a HASH ref";
+ return {%{$_[0]}};
+ }
+ else {
+ return {@_};
}
-
- $instance->BUILDALL(\%args);
-
- return $instance;
}
sub DESTROY { shift->DEMOLISHALL }
# short circuit
return unless $self->can('BUILD');
- no strict 'refs';
-
- for my $class ($self->meta->linearized_isa) {
+ for my $class (reverse $self->meta->linearized_isa) {
+ no strict 'refs';
+ no warnings 'once';
my $code = *{ $class . '::BUILD' }{CODE}
or next;
$code->($self, @_);
}
+ return;
}
sub DEMOLISHALL {
no strict 'refs';
- for my $class ($self->meta->linearized_isa) {
- my $code = *{ $class . '::DEMOLISH' }{CODE}
- or next;
- $code->($self, @_);
+ my @isa;
+ if ( my $meta = Mouse::Meta::Class::class_of($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 $self;
+ @isa = @{ Mouse::Util::get_linear_isa($class_name) }
+ }
+
+ foreach my $class (@isa) {
+ no strict 'refs';
+ my $demolish = *{"${class}::DEMOLISH"}{CODE};
+ $self->$demolish
+ if defined $demolish;
}
+ return;
}
+sub dump {
+ my $self = shift;
+ require Data::Dumper;
+ local $Data::Dumper::Maxdepth = shift if @_;
+ Data::Dumper::Dumper($self);
+}
+
+
+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 $m = ref($meta)->initialize($class);
+ return 1
+ if $m->can('does_role') && $m->does_role($role_name);
+ }
+ return 0;
+};
+
1;
__END__
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<new> takes. Return a hashref of
+parameters.
+
=head2 DEMOLISHALL
Calls L</DEMOLISH> on each class in the class hierarchy. This is called at
You may put any business logic deinitialization in DEMOLISH methods. You don't
need to redispatch or return any specific value.
+
+=head2 does $role_name
+
+This will check if the invocant's class "does" a given C<$role_name>.
+This is similar to "isa" for object, but it checks the roles instead.
+
+
+=head2 B<dump ($maxdepth)>
+
+From the Moose POD:
+
+ C'mon, how many times have you written the following code while debugging:
+
+ use Data::Dumper;
+ warn Dumper $obj;
+
+ It can get seriously annoying, so why not just use this.
+
+The implementation was lifted directly from Moose::Object.
+
=cut
+
projects / gitmo/Mouse.git / blobdiff