use strict;
use warnings;
+use Data::OptList;
use Sub::Exporter;
use Scalar::Util 'blessed';
use Class::MOP 0.60;
-our $VERSION = '0.75';
+our $VERSION = '1.05';
$VERSION = eval $VERSION;
our $AUTHORITY = 'cpan:STEVAN';
my @exports = qw[
- find_meta
+ find_meta
does_role
- search_class_by_role
+ search_class_by_role
ensure_all_roles
apply_all_roles
get_all_init_args
resolve_metaclass_alias
add_method_modifier
english_list
+ meta_attribute_alias
+ meta_class_alias
];
Sub::Exporter::setup_exporter({
my ($class_or_obj, $role) = @_;
my $meta = find_meta($class_or_obj);
-
+
return unless defined $meta;
return unless $meta->can('does_role');
return 1 if $meta->does_role($role);
}
sub search_class_by_role {
- my ($class_or_obj, $role_name) = @_;
-
+ my ($class_or_obj, $role) = @_;
+
my $meta = find_meta($class_or_obj);
return unless defined $meta;
+ my $role_name = blessed $role ? $role->name : $role;
+
foreach my $class ($meta->class_precedence_list) {
-
- my $_meta = find_meta($class);
+
+ my $_meta = find_meta($class);
next unless defined $_meta;
sub apply_all_roles {
my $applicant = shift;
- _apply_all_roles($applicant, sub { 1 }, @_);
+ _apply_all_roles($applicant, undef, @_);
}
sub _apply_all_roles {
my $roles = Data::OptList::mkopt( [@_] );
+ my @role_metas;
foreach my $role (@$roles) {
- my $meta = Class::MOP::load_class( $role->[0] );
+ my $meta;
+
+ if ( blessed $role->[0] ) {
+ $meta = $role->[0];
+ }
+ else {
+ Class::MOP::load_class( $role->[0] , $role->[1] );
+ $meta = Class::MOP::class_of( $role->[0] );
+ }
- unless ($meta->isa('Moose::Meta::Role') ) {
+ unless ($meta && $meta->isa('Moose::Meta::Role') ) {
require Moose;
Moose->throw_error( "You can only consume roles, "
. $role->[0]
. " is not a Moose role" );
}
+
+ push @role_metas, [ $meta, $role->[1] ];
}
- @$roles = grep { local $_ = $_->[0]; $role_filter->() } @$roles;
+ if ( defined $role_filter ) {
+ @role_metas = grep { local $_ = $_->[0]; $role_filter->() } @role_metas;
+ }
- return unless @$roles;
+ return unless @role_metas;
my $meta = ( blessed $applicant ? $applicant : find_meta($applicant) );
- if ( scalar @$roles == 1 ) {
- my ( $role, $params ) = @{ $roles->[0] };
- my $role_meta = Class::MOP::class_of($role);
- $role_meta->apply( $meta, ( defined $params ? %$params : () ) );
+ if ( scalar @role_metas == 1 ) {
+ my ( $role, $params ) = @{ $role_metas[0] };
+ $role->apply( $meta, ( defined $params ? %$params : () ) );
}
else {
- Moose::Meta::Role->combine( @$roles )->apply($meta);
+ Moose::Meta::Role->combine(@role_metas)->apply($meta);
}
}
return +{
map { $_->init_arg => $_->get_value($instance) }
grep { $_->has_value($instance) }
- grep { defined($_->init_arg) }
+ grep { defined($_->init_arg) }
$class->get_all_attributes
};
}
return resolve_metaclass_alias( @_, trait => 1 );
}
+sub _build_alias_package_name {
+ my ($type, $name, $trait) = @_;
+ return 'Moose::Meta::'
+ . $type
+ . '::Custom::'
+ . ( $trait ? 'Trait::' : '' )
+ . $name;
+}
+
{
my %cache;
return $cache{$cache_key}{$metaclass_name}
if $cache{$cache_key}{$metaclass_name};
- my $possible_full_name
- = 'Moose::Meta::'
- . $type
- . '::Custom::'
- . ( $options{trait} ? "Trait::" : "" )
- . $metaclass_name;
+ my $possible_full_name = _build_alias_package_name(
+ $type, $metaclass_name, $options{trait}
+ );
my $loaded_class = Class::MOP::load_first_existing_class(
$possible_full_name,
sub add_method_modifier {
my ( $class_or_obj, $modifier_name, $args ) = @_;
- my $meta = find_meta($class_or_obj);
+ my $meta
+ = $class_or_obj->can('add_before_method_modifier')
+ ? $class_or_obj
+ : find_meta($class_or_obj);
my $code = pop @{$args};
my $add_modifier_method = 'add_' . $modifier_name . '_method_modifier';
if ( my $method_modifier_type = ref( @{$args}[0] ) ) {
$meta->$add_modifier_method( $_->name, $code )
for @matched_methods;
}
+ elsif ($method_modifier_type eq 'ARRAY') {
+ $meta->$add_modifier_method( $_, $code ) for @{$args->[0]};
+ }
+ else {
+ $meta->throw_error(
+ sprintf(
+ "Methods passed to %s must be provided as a list, arrayref or regex, not %s",
+ $modifier_name,
+ $method_modifier_type,
+ )
+ );
+ }
}
else {
$meta->$add_modifier_method( $_, $code ) for @{$args};
return $list;
}
+sub _caller_info {
+ my $level = @_ ? ($_[0] + 1) : 2;
+ my %info;
+ @info{qw(package file line)} = caller($level);
+ return \%info;
+}
+
+sub _create_alias {
+ my ($type, $name, $trait, $for) = @_;
+ my $package = _build_alias_package_name($type, $name, $trait);
+ Class::MOP::Class->initialize($package)->add_method(
+ register_implementation => sub { $for }
+ );
+}
+
+sub meta_attribute_alias {
+ my ($to, $from) = @_;
+ $from ||= caller;
+ my $meta = Class::MOP::class_of($from);
+ my $trait = $meta->isa('Moose::Meta::Role');
+ _create_alias('Attribute', $to, $trait, $from);
+}
+
+sub meta_class_alias {
+ my ($to, $from) = @_;
+ $from ||= caller;
+ my $meta = Class::MOP::class_of($from);
+ my $trait = $meta->isa('Moose::Meta::Role');
+ _create_alias('Class', $to, $trait, $from);
+}
+
1;
__END__
=item B<find_meta($class_or_obj)>
This method takes a class name or object and attempts to find a
-metaclass for the class, if one exists. It will not create one if it
+metaclass for the class, if one exists. It will B<not> create one if it
does not yet exist.
-=item B<does_role($class_or_obj, $role_name)>
+=item B<does_role($class_or_obj, $role_or_obj)>
-Returns true if C<$class_or_obj> does the given C<$role_name>.
+Returns true if C<$class_or_obj> does the given C<$role_or_obj>. The role can
+be provided as a name or a L<Moose::Meta::Role> object.
-The class must already have a metaclass for this to work.
+The class must already have a metaclass for this to work. If it doesn't, this
+function simply returns false.
-=item B<search_class_by_role($class_or_obj, $role_name)>
+=item B<search_class_by_role($class_or_obj, $role_or_obj)>
Returns the first class in the class's precedence list that does
-C<$role_name>, if any.
+C<$role_or_obj>, if any. The role can be either a name or a
+L<Moose::Meta::Role> object.
The class must already have a metaclass for this to work.
The C<$applicant> must already have a metaclass object.
-The list of C<@roles> should be a list of names, each of which can be
-followed by an optional hash reference of options (C<exclude> and
-C<alias>).
+The list of C<@roles> should a list of names or L<Moose::Meta::Role> objects,
+each of which can be followed by an optional hash reference of options
+(C<-excludes> and C<-alias>).
=item B<ensure_all_roles($applicant, @roles)>
metaclass => "Bar",
);
-The name resolution mechanism is covered in L<Moose/Trait Name
-Resolution>.
+The name resolution mechanism is covered in
+L<Moose/Metaclass and Trait Name Resolution>.
+
+=item B<meta_class_alias($to[, $from])>
+
+=item B<meta_attribute_alias($to[, $from])>
+
+Create an alias from the class C<$from> (or the current package, if
+C<$from> is unspecified), so that
+L<Moose/Metaclass and Trait Name Resolution> works properly.
=item B<english_list(@items)>
=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.
+See L<Moose/BUGS> for details on reporting bugs.
=head1 AUTHOR
projects / gitmo/Moose.git / blobdiff