X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FMouse%2FMeta%2FClass.pm;h=4a6adec08ae10c904d71ebe6d9d0f1afc306f499;hb=fce211ae5c3943a1b041b9c0985c4daf189fb8a8;hp=7d7d1a0ecd01c9deca6c7c5207d5a3540e1cb674;hpb=23264b5b200f08d7258efc1509846d0a161194e1;p=gitmo%2FMouse.git

diff --git a/lib/Mouse/Meta/Class.pm b/lib/Mouse/Meta/Class.pm
index 7d7d1a0..4a6adec 100644
--- a/lib/Mouse/Meta/Class.pm
+++ b/lib/Mouse/Meta/Class.pm
@@ -5,72 +5,27 @@ use warnings;
 use Mouse::Meta::Method::Constructor;
 use Mouse::Meta::Method::Destructor;
 use Scalar::Util qw/blessed weaken/;
-use Mouse::Util qw/get_linear_isa/;
-use Carp 'confess';
+use Mouse::Util qw/get_linear_isa not_supported/;
 
 use base qw(Mouse::Meta::Module);
 
-do {
-    my %METACLASS_CACHE;
 
-    # because Mouse doesn't introspect existing classes, we're forced to
-    # only pay attention to other Mouse classes
-    sub _metaclass_cache {
-        my $class = shift;
-        my $name  = shift;
-        return $METACLASS_CACHE{$name};
-    }
-
-    sub initialize {
-        my($class, $package_name, @args) = @_;
-
-        ($package_name && !ref($package_name))
-            || confess("You must pass a package name and it cannot be blessed");
-
-        return $METACLASS_CACHE{$package_name}
-            ||= $class->_construct_class_instance(package => $package_name, @args);
-    }
-
-    sub class_of{
-        my($class_or_instance) = @_;
-        return undef unless defined $class_or_instance;
-        return $METACLASS_CACHE{ blessed($class_or_instance) || $class_or_instance };
-    }
-
-    # Means of accessing all the metaclasses that have
-    # been initialized thus far
-    sub get_all_metaclasses         {        %METACLASS_CACHE         }
-    sub get_all_metaclass_instances { values %METACLASS_CACHE         }
-    sub get_all_metaclass_names     { keys   %METACLASS_CACHE         }
-    sub get_metaclass_by_name       { $METACLASS_CACHE{$_[0]}         }
-    sub store_metaclass_by_name     { $METACLASS_CACHE{$_[0]} = $_[1] }
-    sub weaken_metaclass            { weaken($METACLASS_CACHE{$_[0]}) }
-    sub does_metaclass_exist        { exists $METACLASS_CACHE{$_[0]} && defined $METACLASS_CACHE{$_[0]} }
-    sub remove_metaclass_by_name    { $METACLASS_CACHE{$_[0]} = undef }
-};
-
-sub _construct_class_instance {
+sub _new {
     my($class, %args) = @_;
 
-    $args{attributes}   = {};
+    $args{attributes} ||= {};
+    $args{methods}    ||= {};
+    $args{roles}      ||= [];
+
     $args{superclasses} = do {
         no strict 'refs';
         \@{ $args{package} . '::ISA' };
     };
-    $args{roles}   ||= [];
-    $args{methods} ||= {};
 
     bless \%args, $class;
 }
 
-sub name { $_[0]->{package} }
-sub _method_map{ $_[0]->{methods} }
-
-sub namespace{
-    my $name = $_[0]->{package};
-    no strict 'refs';
-    return \%{ $name . '::' };
-}
+sub roles { $_[0]->{roles} }
 
 sub superclasses {
     my $self = shift;
@@ -142,22 +97,69 @@ sub get_all_attributes {
     return @attr;
 }
 
-sub get_attribute_map { $_[0]->{attributes} }
-sub has_attribute     { exists $_[0]->{attributes}->{$_[1]} }
-sub get_attribute     { $_[0]->{attributes}->{$_[1]} }
-sub get_attribute_list {
+sub linearized_isa { @{ get_linear_isa($_[0]->name) } }
+
+sub new_object {
     my $self = shift;
-    keys %{$self->get_attribute_map};
-}
+    my $args = (@_ == 1) ? $_[0] : { @_ };
 
-sub linearized_isa { @{ get_linear_isa($_[0]->name) } }
+    my $instance = bless {}, $self->name;
+
+    foreach my $attribute ($self->get_all_attributes) {
+        my $from = $attribute->init_arg;
+        my $key  = $attribute->name;
+
+        if (defined($from) && exists($args->{$from})) {
+            $args->{$from} = $attribute->coerce_constraint($args->{$from})
+                if $attribute->should_coerce;
+            $attribute->verify_against_type_constraint($args->{$from});
+
+            $instance->{$key} = $args->{$from};
+
+            weaken($instance->{$key})
+                if ref($instance->{$key}) && $attribute->is_weak_ref;
+
+            if ($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->is_required) {
+                    $self->throw_error("Attribute (".$attribute->name.") is required");
+                }
+            }
+        }
+    }
+    return $instance;
+}
 
 sub clone_object {
     my $class    = shift;
     my $instance = shift;
 
     (blessed($instance) && $instance->isa($class->name))
-        || confess "You must pass an instance of the metaclass (" . $class->name . "), not ($instance)";
+        || $class->throw_error("You must pass an instance of the metaclass (" . $class->name . "), not ($instance)");
 
     $class->clone_instance($instance, @_);
 }
@@ -166,7 +168,7 @@ sub clone_instance {
     my ($class, $instance, %params) = @_;
 
     (blessed($instance))
-        || confess "You can only clone instances, ($instance) is not a blessed instance";
+        || $class->throw_error("You can only clone instances, ($instance) is not a blessed instance");
 
     my $clone = bless { %$instance }, ref $instance;
 
@@ -190,7 +192,6 @@ sub make_immutable {
         @_,
     );
 
-    my $name = $self->name;
     $self->{is_immutable}++;
 
     if ($args{inline_constructor}) {
@@ -206,7 +207,7 @@ sub make_immutable {
     return 1;
 }
 
-sub make_mutable { confess "Mouse does not currently support 'make_mutable'" }
+sub make_mutable { not_supported }
 
 sub is_immutable { $_[0]->{is_immutable} }
 
@@ -270,23 +271,20 @@ sub add_override_method_modifier {
     # Class::Method::Modifiers won't do this for us, so do it ourselves
 
     my $body = $pkg->can($name)
-        or confess "You cannot override '$method' because it has no super method";
+        or $self->throw_error("You cannot override '$method' because it has no super method");
 
     no strict 'refs';
     *$method = sub { $code->($pkg, $body, @_) };
 }
 
-
-sub roles { $_[0]->{roles} }
-
 sub does_role {
     my ($self, $role_name) = @_;
 
     (defined $role_name)
-        || confess "You must supply a role name to look for";
+        || $self->throw_error("You must supply a role name to look for");
 
     for my $class ($self->linearized_isa) {
-        my $meta = class_of($class);
+        my $meta = Mouse::class_of($class);
         next unless $meta && $meta->can('roles');
 
         for my $role (@{ $meta->roles }) {
@@ -301,20 +299,20 @@ sub create {
     my ($class, $package_name, %options) = @_;
 
     (ref $options{superclasses} eq 'ARRAY')
-        || confess "You must pass an ARRAY ref of superclasses"
+        || $class->throw_error("You must pass an ARRAY ref of superclasses")
             if exists $options{superclasses};
 
     (ref $options{attributes} eq 'ARRAY')
-        || confess "You must pass an ARRAY ref of attributes"
+        || $class->throw_error("You must pass an ARRAY ref of attributes")
             if exists $options{attributes};
 
     (ref $options{methods} eq 'HASH')
-        || confess "You must pass a HASH ref of methods"
+        || $class->throw_error("You must pass a HASH ref of methods")
             if exists $options{methods};
 
     do {
         ( defined $package_name && $package_name )
-          || confess "You must pass a package name";
+          || $class->throw_error("You must pass a package name");
 
         my $code = "package $package_name;";
         $code .= "\$$package_name\:\:VERSION = '" . $options{version} . "';"
@@ -323,7 +321,7 @@ sub create {
           if exists $options{authority};
 
         eval $code;
-        confess "creation of $package_name failed : $@" if $@;
+        $class->throw_error("creation of $package_name failed : $@") if $@;
     };
 
     my %initialize_options = %options;