1 files changed, 46 insertions, 0 deletions
diff --git a/lib/Moose/Exception/MethodNameConflictInRoles.pm b/lib/Moose/Exception/MethodNameConflictInRoles.pm
new file mode 100644
index 0000000..d6db656
--- /dev/null
+++ b/lib/Moose/Exception/MethodNameConflictInRoles.pm
@@ -0,0 +1,46 @@
+package Moose::Exception::MethodNameConflictInRoles;
+our $VERSION = '2.1405';
+
+use Moose;
+extends 'Moose::Exception';
+with 'Moose::Exception::Role::Class';
+
+has 'conflict' => (
+    traits     => ['Array'],
+    is         => 'ro',
+    isa        => 'ArrayRef[Moose::Meta::Role::Method::Conflicting]',
+    handles    => { conflict_methods_count => 'count',
+                    get_method_at          => 'get',
+                    get_all_methods        => 'elements',
+    },
+    required   => 1
+);
+
+sub _get_method_names {
+    my $self = shift;
+
+    return ( $self->conflict_methods_count == 1 ?
+        "'".$self->get_method_at(0)->name."'":
+        Moose::Util::english_list( map { q{'} . $_->name . q{'} } $self->get_all_methods ) );
+}
+
+sub _build_message {
+    my $self = shift;
+    my $count = $self->conflict_methods_count;
+    my $roles = $self->get_method_at(0)->roles_as_english_list;
+
+    if( $count == 1 )
+    {
+        "Due to a method name conflict in roles "
+        .$roles.", the method ".$self->_get_method_names
+        ." must be implemented or excluded by '".$self->class_name."'";
+    }
+    else
+    {
+        "Due to method name conflicts in roles "
+        .$roles.", the methods ".$self->_get_method_names
+        ." must be implemented or excluded by '".$self->class_name."'";
+    }
+}
+
+1;