Changeset 3239 for code/branches/core4/src/core/Identifier.h

Timestamp:

Jun 28, 2009, 2:45:37 PM (15 years ago)

Author:

rgrieder

Message:

Found a way to write orxonox_cast<T*> instead of orxonox_cast<T> so that the syntax resembles dynamic_cast<T*>.

File:

• code/branches/core4/src/core/Identifier.h (modified) (3 diffs)

code/branches/core4/src/core/Identifier.h

@@ -483 +483 @@
     // ###      orxonox_cast       ###
     // ###############################
+    //! Helper struct to have orxonox_cast<T*> instead of orxonox_cast<T>
+    template <class T, class U>
+    struct OrxonoxCaster
+    {
+        static T* cast(U* source)
+        {
+            // If you see this function in a compiler error description, it means
+            // you were misusing orxonox_cast. You must always cast to a pointer type!
+            *****T();
+        }
+    };
+
+    //! Helper struct to have orxonox_cast<T*> instead of orxonox_cast<T*>
+    template <class T, class U>
+    struct OrxonoxCaster<T*, U>
+    {
+        FORCEINLINE static T* cast(U* source)
+        {
+#ifdef ORXONOX_COMPILER_MSVC
+            return source->template getDerivedPointer<T>(ClassIdentifier<T>::getIdentifier()->getClassID());
+#else
+            return dynamic_cast<T*>(source);
+#endif
+        }
+    };
+
     /**
     @brief
@@ -495 +521 @@
     */
     template <class T, class U>
-    FORCEINLINE T* orxonox_cast(U* source)
-    {
-#ifdef ORXONOX_COMPILER_MSVC
-        return source->template getDerivedPointer<T>(ClassIdentifier<T>::getIdentifier()->getClassID());
-#else
-        return dynamic_cast<T*>(source);
-#endif
+    FORCEINLINE T orxonox_cast(U* source)
+    {
+        return OrxonoxCaster<T, U>::cast(source);
     }
 
@@ -597 +619 @@
                 if (newObject)
                 {
-                    return orxonox_cast<T>(newObject);
+                    return orxonox_cast<T*>(newObject);
                 }
                 else