From a512cd495e8fcfa3252673fa5a49ec4b90684958 Mon Sep 17 00:00:00 2001
From: Robert Maynard <robert.maynard@kitware.com>
Date: Wed, 3 Oct 2018 13:42:34 -0400
Subject: [PATCH] Allow runtime construction of DeviceAdapterId

When need some way to convert user input such as an integer or
string to a device adapter id. This allows for integer to
device adapter id.
---
 vtkm/cont/internal/DeviceAdapterTag.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/vtkm/cont/internal/DeviceAdapterTag.h b/vtkm/cont/internal/DeviceAdapterTag.h
index e60ab15a3..ace1940c6 100644
--- a/vtkm/cont/internal/DeviceAdapterTag.h
+++ b/vtkm/cont/internal/DeviceAdapterTag.h
@@ -63,6 +63,8 @@ struct DeviceAdapterId
   DeviceAdapterNameType GetName() const;
 
 protected:
+  friend DeviceAdapterId make_DeviceAdapterId(vtkm::Int8 id);
+
   constexpr explicit DeviceAdapterId(vtkm::Int8 id)
     : Value(id)
   {
@@ -72,6 +74,11 @@ private:
   vtkm::Int8 Value;
 };
 
+DeviceAdapterId make_DeviceAdapterId(vtkm::Int8 id)
+{
+  return DeviceAdapterId(id);
+}
+
 template <typename DeviceAdapter>
 struct DeviceAdapterTraits;
 }