use base qw/Exporter/;
use Carp qw(confess);
-use B ();
our @EXPORT_OK = qw(
find_meta
get_code_info
not_supported
+
+ does meta dump
);
our %EXPORT_TAGS = (
all => \@EXPORT_OK,
+ meta => [qw(does meta dump)],
);
# Moose::Util compatible utilities
}
sub does_role{
- my ($class_or_obj, $role) = @_;
+ my ($class_or_obj, $role_name) = @_;
my $meta = Mouse::Meta::Module::class_of($class_or_obj);
- return 0 unless defined $meta;
- return 1 if $meta->does_role($role);
- return 0;
+ (defined $role_name)
+ || ($meta || 'Mouse::Meta::Class')->throw_error("You must supply a role name to does()");
+
+ return defined($meta) && $meta->does_role($role_name);
}
my ($coderef) = @_;
ref($coderef) or return;
+ require B;
+
my $cv = B::svref_2object($coderef);
$cv->isa('B::CV') or return;
my @classes = @_
or return;
- my $found;
my %exceptions;
for my $class (@classes) {
my $e = _try_load_one_class($class);
$exceptions{$class} = $e;
}
else {
- $found = $class;
- last;
+ return $class;
}
}
- return $found if $found;
+ # not found
confess join(
"\n",
map {
if ($i + 1 < $max && ref($_[$i + 1])) {
push @roles, [ $_[$i++] => $_[$i] ];
} else {
- push @roles, [ $_[$i] => {} ];
+ push @roles, [ $_[$i] => undef ];
}
my $role_name = $roles[-1][0];
load_class($role_name);
return join q{, }, @items, "and $tail";
}
+
+# common utilities
+
sub not_supported{
my($feature) = @_;
Carp::confess("Mouse does not currently support $feature");
}
+sub meta{
+ return Mouse::Meta::Class->initialize($_[0]);
+}
+
+sub dump {
+ my($self, $maxdepth) = @_;
+
+ require 'Data/Dumper.pm'; # we don't want to create its namespace
+ my $dd = Data::Dumper->new([$self]);
+ $dd->Maxdepth(defined($maxdepth) ? $maxdepth : 2);
+ $dd->Indent(1);
+ return $dd->Dump();
+}
+
+sub does :method;
+*does = \&does_role; # alias
+
1;
__END__
=head2 Class::MOP
-=head3 C<is_class_loaded>
+=head2 C<< is_class_loaded(ClassName) -> Bool >>
+
+Returns whether C<ClassName> is actually loaded or not. It uses a heuristic which
+involves checking for the existence of C<$VERSION>, C<@ISA>, and any
+locally-defined method.
-=head3 C<load_class>
+=head3 C<< load_class(ClassName) >>
+
+This will load a given C<ClassName> (or die if it's not loadable).
+This function can be used in place of tricks like
+C<eval "use $module"> or using C<require>.
=head2 MRO::Compat
=back
+=head1 SEE ALSO
+
+L<Moose::Util>
+
+L<Scalar::Util>
+
+L<Sub::Identify>
+
+L<MRO::Compat>
+
=cut