From adc9e63df96a0ecff02cf58c28547f36cb90e974 Mon Sep 17 00:00:00 2001
From: Robert Maynard <robert.maynard@kitware.com>
Date: Fri, 23 Aug 2019 10:02:01 -0400
Subject: [PATCH] vtkm::cont::CastAndCall now supports CellSetExtrude

---
 vtkm/cont/CastAndCall.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/vtkm/cont/CastAndCall.h b/vtkm/cont/CastAndCall.h
index dc5eb9aca..f0edb7b55 100644
--- a/vtkm/cont/CastAndCall.h
+++ b/vtkm/cont/CastAndCall.h
@@ -33,6 +33,7 @@ template <typename T, typename S, typename U, typename V>
 class CellSetExplicit;
 template <typename T, typename S>
 class CellSetPermutation;
+class CellSetExtrude;
 
 /// A Generic interface to CastAndCall. The default implementation simply calls
 /// DynamicObject's CastAndCall, but specializations of this function exist for
@@ -106,6 +107,15 @@ void CastAndCall(const vtkm::cont::CellSetPermutation<PermutationType, CellSetTy
   f(cellset, std::forward<Args>(args)...);
 }
 
+/// A specialization of CastAndCall for basic CellSetExtrude types,
+/// Since the type is already known no deduction is needed.
+/// This specialization is used to simplify numerous worklet algorithms
+template <typename Functor, typename... Args>
+void CastAndCall(const vtkm::cont::CellSetExtrude& cellset, Functor&& f, Args&&... args)
+{
+  f(cellset, std::forward<Args>(args)...);
+}
+
 /// CastAndCall if the condition is true.
 template <typename... Args>
 void ConditionalCastAndCall(std::true_type, Args&&... args)