X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?p=gitmo%2FMouse.git;a=blobdiff_plain;f=lib%2FMouse%2FMeta%2FClass.pm;h=ee459c302c73d9687c79b43a003c00e4416bcdc6;hp=b1cffd86a2acaa032eccfc1ed6df92ab77de53ae;hb=HEAD;hpb=913b59645bf5e7f16128c0e20711090a43676096

diff --git a/lib/Mouse/Meta/Class.pm b/lib/Mouse/Meta/Class.pm
index b1cffd8..ee459c3 100644
--- a/lib/Mouse/Meta/Class.pm
+++ b/lib/Mouse/Meta/Class.pm
@@ -1,7 +1,7 @@
 package Mouse::Meta::Class;
-use Mouse::Util qw/:meta get_linear_isa not_supported/; # enables strict and warnings
+use Mouse::Util qw/:meta/; # enables strict and warnings
 
-use Scalar::Util qw/blessed weaken/;
+use Scalar::Util ();
 
 use Mouse::Meta::Module;
 our @ISA = qw(Mouse::Meta::Module);
@@ -57,22 +57,50 @@ sub superclasses {
         foreach my $super(@_){
             Mouse::Util::load_class($super);
             my $meta = Mouse::Util::get_metaclass_by_name($super);
+            next if $self->verify_superclass($super, $meta);
+            $self->_reconcile_with_superclass_meta($meta);
+        }
+        return @{ $self->{superclasses} } = @_;
+    }
 
-            next if not defined $meta;
-
-            if(Mouse::Util::is_a_metarole($meta)){
-                $self->throw_error("You cannot inherit from a Mouse Role ($super)");
-            }
+    return @{ $self->{superclasses} };
+}
 
-            next if $self->isa(ref $meta); # _superclass_meta_is_compatible
+sub verify_superclass {
+    my($self, $super, $super_meta) = @_;
 
-            $self->_reconcile_with_superclass_meta($meta);
+    if(defined $super_meta) {
+        if(Mouse::Util::is_a_metarole($super_meta)){
+            $self->throw_error("You cannot inherit from a Mouse Role ($super)");
         }
-        @{ $self->{superclasses} } = @_;
+    }
+    else {
+        # The metaclass of $super is not initialized.
+        # i.e. it might be Mouse::Object, a mixin package (e.g. Exporter),
+        # or a foreign class including Moose classes.
+        # See also Mouse::Foreign::Meta::Role::Class.
+        my $mm = $super->can('meta');
+        if(!($mm && $mm == \&Mouse::Util::meta)) {
+            if($super->can('new') or $super->can('DESTROY')) {
+                $self->inherit_from_foreign_class($super);
+            }
+        }
+        return 1; # always ok
     }
 
-    return @{ $self->{superclasses} };
+    return $self->isa(ref $super_meta); # checks metaclass compatibility
+}
+
+sub inherit_from_foreign_class {
+    my($class, $super) = @_;
+    if($ENV{PERL_MOUSE_STRICT}) {
+        Carp::carp("You inherit from non-Mouse class ($super),"
+            . " but it is unlikely to work correctly."
+            . " Please consider using MouseX::Foreign");
+    }
+    return;
 }
+
 my @MetaClassTypes = (
     'attribute',   # Mouse::Meta::Attribute
     'method',      # Mouse::Meta::Method
@@ -136,7 +164,7 @@ sub _collect_roles {
 }
 
 
-sub find_method_by_name{
+sub find_method_by_name {
     my($self, $method_name) = @_;
     defined($method_name)
         or $self->throw_error('You must define a method name to find');
@@ -161,14 +189,14 @@ sub get_all_method_names {
             $self->linearized_isa;
 }
 
-sub find_attribute_by_name{
+sub find_attribute_by_name {
     my($self, $name) = @_;
-    my $attr;
-    foreach my $class($self->linearized_isa){
-        my $meta = Mouse::Util::get_metaclass_by_name($class) or next;
-        $attr = $meta->get_attribute($name) and last;
+    defined($name)
+        or $self->throw_error('You must define an attribute name to find');
+    foreach my $attr($self->get_all_attributes) {
+        return $attr if $attr->name eq $name;
     }
-    return $attr;
+    return undef;
 }
 
 sub add_attribute {
@@ -176,7 +204,7 @@ sub add_attribute {
 
     my($attr, $name);
 
-    if(blessed $_[0]){
+    if(Scalar::Util::blessed($_[0])){
         $attr = $_[0];
 
         $attr->isa('Mouse::Meta::Attribute')
@@ -207,11 +235,16 @@ sub add_attribute {
         }
     }
 
-    weaken( $attr->{associated_class} = $self );
+    Scalar::Util::weaken( $attr->{associated_class} = $self );
 
-    $self->{attributes}{$attr->name} = $attr;
+    # install accessors first
     $attr->install_accessors();
 
+    # then register the attribute to the metaclass
+    $attr->{insertion_order}   = keys %{ $self->{attributes} };
+    $self->{attributes}{$name} = $attr;
+    $self->_invalidate_metaclass_cache();
+
     if(!$attr->{associated_methods} && ($attr->{is} || '') ne 'bare'){
         Carp::carp(qq{Attribute ($name) of class }.$self->name
             .qq{ has no associated methods (did you mean to provide an "is" argument?)});
@@ -219,10 +252,19 @@ sub add_attribute {
     return $attr;
 }
 
-sub compute_all_applicable_attributes { # DEPRECATED
-    Carp::cluck('compute_all_applicable_attributes() has been deprecated. Use get_all_attributes() instead');
-
-    return shift->get_all_attributes(@_)
+sub _calculate_all_attributes {
+    my($self) = @_;
+    my %seen;
+    my @all_attrs;
+    foreach my $class($self->linearized_isa) {
+        my $meta  = Mouse::Util::get_metaclass_by_name($class) or next;
+        my @attrs = grep { !$seen{$_->name}++ } values %{$meta->{attributes}};
+        @attrs = sort {
+                $b->{insertion_order} <=> $a->{insertion_order}
+            } @attrs;
+        push @all_attrs, @attrs;
+    }
+    return [reverse @all_attrs];
 }
 
 sub linearized_isa;
@@ -230,16 +272,6 @@ sub linearized_isa;
 sub new_object;
 sub clone_object;
 
-
-sub clone_instance { # DEPRECATED
-    my ($class, $instance, %params) = @_;
-
-    Carp::cluck('clone_instance() has been deprecated. Use clone_object() instead');
-
-    return $class->clone_object($instance, %params);
-}
-
-
 sub immutable_options {
     my ( $self, @args ) = @_;
 
@@ -251,15 +283,12 @@ sub immutable_options {
     );
 }
 
-
 sub make_immutable {
     my $self = shift;
     my %args = $self->immutable_options(@_);
 
     $self->{is_immutable}++;
 
-    $self->{strict_constructor} = $args{strict_constructor};
-
     if ($args{inline_constructor}) {
         $self->add_method($args{constructor_name} =>
             Mouse::Util::load_class($self->constructor_class)
@@ -272,8 +301,8 @@ sub make_immutable {
                 ->_generate_destructor($self, \%args));
     }
 
-    # Moose's make_immutable returns true allowing calling code to skip setting an explicit true value
-    # at the end of a source file. 
+    # Moose's make_immutable returns true allowing calling code to skip
+    # setting an explicit true value at the end of a source file.
     return 1;
 }
 
@@ -286,22 +315,25 @@ sub make_mutable {
 sub is_immutable;
 sub is_mutable   { !$_[0]->is_immutable }
 
-sub _install_modifier_pp{
+sub _install_modifier {
     my( $self, $type, $name, $code ) = @_;
     my $into = $self->name;
 
     my $original = $into->can($name)
-        or $self->throw_error("The method '$name' is not found in the inheritance hierarchy for class $into");
+        or $self->throw_error("The method '$name' was not found in the inheritance hierarchy for $into");
 
     my $modifier_table = $self->{modifiers}{$name};
 
     if(!$modifier_table){
-        my(@before, @after, @around, $cache, $modified);
-
-        $cache = $original;
-
-        $modified = sub {
-            for my $c (@before) { $c->(@_) }
+        my(@before, @after, @around);
+        my $cache = $original;
+        my $modified = sub {
+            if(@before) {
+                for my $c (@before) { $c->(@_) }
+            }
+            unless(@after) {
+                return $cache->(@_);
+            }
 
             if(wantarray){ # list context
                 my @rval = $cache->(@_);
@@ -352,55 +384,6 @@ sub _install_modifier_pp{
     return;
 }
 
-sub _install_modifier {
-    my ( $self, $type, $name, $code ) = @_;
-
-    # load Data::Util first
-    my $no_cmm_fast = do{
-        local $@;
-        eval q{ use Data::Util 0.55 () };
-        $@;
-    };
-
-    my $impl;
-    if($no_cmm_fast){
-        $impl = \&_install_modifier_pp;
-    }
-    else{
-        $impl = sub {
-            my ( $self, $type, $name, $code ) = @_;
-            my $into = $self->name;
-
-            my $method = Mouse::Util::get_code_ref( $into, $name );
-
-            if ( !$method || !Data::Util::subroutine_modifier($method) ) {
-                unless ($method) {
-                    $method = $into->can($name)
-                        or Carp::confess("The method '$name' is not found in the inheritance hierarchy for class $into");
-                }
-                $method = Data::Util::modify_subroutine( $method,
-                    $type => [$code] );
-
-                $self->add_method($name => $method);
-            }
-            else {
-                Data::Util::subroutine_modifier( $method, $type => $code );
-                $self->add_method($name => Mouse::Util::get_code_ref($into, $name));
-            }
-
-            return;
-        };
-    }
-
-    # replace this method itself :)
-    {
-        no warnings 'redefine';
-        *_install_modifier = $impl;
-    }
-
-    $self->$impl( $type, $name, $code );
-}
-
 sub add_before_method_modifier {
     my ( $self, $name, $code ) = @_;
     $self->_install_modifier( 'before', $name, $code );
@@ -432,8 +415,7 @@ sub add_override_method_modifier {
         local $Mouse::SUPER_PACKAGE = $package;
         local $Mouse::SUPER_BODY    = $super_body;
         local @Mouse::SUPER_ARGS    = @_;
-
-        $code->(@_);
+        &{$code};
     });
     return;
 }
@@ -450,10 +432,10 @@ sub add_augment_method_modifier {
     my $super_package = $super->package_name;
     my $super_body    = $super->body;
 
-    $self->add_method($name => sub{
+    $self->add_method($name => sub {
         local $Mouse::INNER_BODY{$super_package} = $code;
         local $Mouse::INNER_ARGS{$super_package} = [@_];
-        $super_body->(@_);
+        &{$super_body};
     });
     return;
 }
@@ -488,7 +470,12 @@ Mouse::Meta::Class - The Mouse class metaclass
 
 =head1 VERSION
 
-This document describes Mouse version 0.61
+This document describes Mouse version 0.95
+
+=head1 DESCRIPTION
+
+This class is a meta object protocol for Mouse classes,
+which is a subset of Moose::Meta:::Class.
 
 =head1 METHODS