0.4 Win-Beta0.4.0

1 files changed, 150 insertions, 0 deletions

diff --git a/LibOVR/Src/Kernel/OVR_Nullptr.h b/LibOVR/Src/Kernel/OVR_Nullptr.h
new file mode 100644
index 0000000..3fd0969
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+++ b/LibOVR/Src/Kernel/OVR_Nullptr.h
@@ -0,0 +1,150 @@
+/************************************************************************************
+
+PublicHeader:   OVR_Kernel.h
+Filename    :   OVR_Nullptr.h
+Content     :   Implements C++11 nullptr for the case that the compiler doesn't.
+Created     :   June 19, 2014
+Notes       : 
+
+Copyright   :   Copyright 2014 Oculus VR, Inc. All Rights reserved.
+
+Licensed under the Oculus VR Rift SDK License Version 3.1 (the "License"); 
+you may not use the Oculus VR Rift SDK except in compliance with the License, 
+which is provided at the time of installation or download, or which 
+otherwise accompanies this software in either electronic or hard copy form.
+
+You may obtain a copy of the License at
+
+http://www.oculusvr.com/licenses/LICENSE-3.1 
+
+Unless required by applicable law or agreed to in writing, the Oculus VR SDK 
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+************************************************************************************/
+
+#ifndef OVR_Nullptr_h
+#define OVR_Nullptr_h
+
+#pragma once
+
+#include "OVR_Types.h"
+
+
+//-----------------------------------------------------------------------------------
+// ***** OVR_HAVE_std_nullptr_t
+//
+// Identifies if <cstddef.h> includes std::nullptr_t. 
+//
+#if !defined(OVR_HAVE_std_nullptr_t) && defined(OVR_CPP11_ENABLED)
+    #if defined(OVR_STDLIB_LIBCPP)
+        #define OVR_HAVE_std_nullptr_t 1
+    #elif defined(OVR_STDLIB_LIBSTDCPP)
+        #if (__GLIBCXX__ >= 20110325) && (__GLIBCXX__ != 20110428) && (__GLIBCXX__ != 20120702)
+            #define OVR_HAVE_std_nullptr_t 1
+        #endif
+    #elif defined(_MSC_VER) && (_MSC_VER >= 1600) // VS2010+
+        #define OVR_HAVE_std_nullptr_t 1
+    #elif defined(__clang__)
+        #define OVR_HAVE_std_nullptr_t 1
+    #elif defined(OVR_CPP_GNUC) && (OVR_CPP_VERSION >= 406) // GCC 4.6+
+        #define OVR_HAVE_std_nullptr_t 1
+    #endif
+#endif
+
+
+//-----------------------------------------------------------------------------------
+// ***** nullptr / std::nullptr_t
+//
+// Declares and defines nullptr and related types.
+//
+#if defined(OVR_CPP_NO_NULLPTR)
+    namespace std
+    {
+        class nullptr_t
+        {
+        public:
+            template <typename T>
+            operator T*() const
+                { return 0; }
+         
+            template <typename C, typename T>
+            operator T C::*() const
+                { return 0; }
+
+            #if OVR_CPP_NO_EXPLICIT_CONVERSION_OPERATORS
+                typedef void* (nullptr_t::*bool_)() const;  // 4.12,p1. We can't portably use operator bool(){ return false; } because bool 
+                operator bool_() const                      // is convertable to int which breaks other required functionality.
+                    { return false; }
+            #else
+                operator bool() const
+                    { return false; }
+            #endif
+
+        private:
+            void operator&() const; // 5.2.10,p9
+        };
+
+        inline nullptr_t nullptr_get()
+        {
+            nullptr_t n = { };
+            return n;
+        }
+
+        #if !defined(nullptr)
+            #define nullptr nullptr_get()
+        #endif
+
+    } // namespace std
+
+
+    // 5.9,p2 p4
+    // 13.6, p13
+    template <typename T>
+    inline bool operator==(T* pT, const std::nullptr_t)
+        { return pT == 0; }
+
+    template <typename T>
+    inline bool operator==(const std::nullptr_t, T* pT)
+        { return pT == 0; }
+
+    template <typename T, typename U>
+    inline bool operator==(const std::nullptr_t, T U::* pU)
+        { return pU == 0; }
+
+    template <typename T, typename U>
+    inline bool operator==(T U::* pTU, const std::nullptr_t)
+        { return pTU == 0; }
+
+    inline bool operator==(const std::nullptr_t, const std::nullptr_t)
+        { return true; }
+
+    inline bool operator!=(const std::nullptr_t, const std::nullptr_t)
+        { return false; }
+
+    inline bool operator<(const std::nullptr_t, const std::nullptr_t)
+        { return false; }
+
+    inline bool operator<=(const std::nullptr_t, const std::nullptr_t)
+        { return true; }
+
+    inline bool operator>(const std::nullptr_t, const std::nullptr_t)
+        { return false; }
+
+    inline bool operator>=(const std::nullptr_t, const std::nullptr_t)
+        { return true; }
+
+    using std::nullptr_t;
+    using std::nullptr_get;
+
+// Some compilers natively support C++11 nullptr but the standard library being used 
+// doesn't declare std::nullptr_t, in which case we provide one ourselves.
+#elif !defined(OVR_HAVE_std_nullptr_t) && !defined(OVR_CPP_NO_DECLTYPE)
+    namespace std { typedef decltype(nullptr) nullptr_t; }
+#endif
+
+
+#endif
+