1 files changed, 30 insertions, 0 deletions
diff --git a/lib/Moose/Exception/RequiredMethodsNotImplementedByClass.pm b/lib/Moose/Exception/RequiredMethodsNotImplementedByClass.pm
new file mode 100644
index 0000000..541c169
--- /dev/null
+++ b/lib/Moose/Exception/RequiredMethodsNotImplementedByClass.pm
@@ -0,0 +1,30 @@
+package Moose::Exception::RequiredMethodsNotImplementedByClass;
+our $VERSION = '2.1405';
+
+use Moose;
+extends 'Moose::Exception';
+with 'Moose::Exception::Role::Class', 'Moose::Exception::Role::Role';
+
+has 'missing_methods' => (
+    traits     => ['Array'],
+    is         => 'ro',
+    isa        => 'ArrayRef[Moose::Meta::Role::Method::Required]',
+    handles    => { method_count    => 'count',
+                    get_method_at   => 'get',
+                    get_all_methods => 'elements',
+    },
+    required   => 1
+);
+
+sub _build_message {
+    my $self = shift;
+
+    my $noun = $self->method_count == 1 ? 'method' : 'methods';
+    my $list = Moose::Util::english_list( map { q{'} . $_ . q{'} } $self->get_all_methods );
+    my ($role_name, $class_name) = ($self->role_name, $self->class_name);
+
+    return "'$role_name' requires the $noun $list "
+        . "to be implemented by '$class_name'";
+}
+
+1;