Changeset 7284 for code/trunk/src/libraries/util/Convert.h

Timestamp:

Aug 31, 2010, 3:37:40 AM (14 years ago)

Author:

landauf

Message:

merged consolecommands3 branch back to trunk.

note: the console command interface has changed completely, but the documentation is not yet up to date. just copy an existing command and change it to your needs, it's pretty self-explanatory. also the include files related to console commands are now located in core/command/. in the game it should work exactly like before, except for some changes in the auto-completion.

Location:

code/trunk

Files:

• . (modified) (1 prop)
• src/libraries/util/Convert.h (modified) (1 diff)

code/trunk/src/libraries/util/Convert.h

@@ -109 +109 @@
         }
     };
+
+    ////////////
+    // upcast //
+    ////////////
+    namespace detail
+    {
+        // perform a static cast if ToType is a base of FromType
+        template<class ToType, class FromType>
+        FORCEINLINE ToType upcast(FromType input, Loki::Int2Type<true>)
+        {
+            return static_cast<ToType>(input);
+        }
+
+        // return zero if ToType is not a base of FromType
+        template<class ToType, class FromType>
+        FORCEINLINE ToType upcast(FromType input, Loki::Int2Type<false>)
+        {
+            return 0;
+        }
+    }
+
+    // performs an upcast if ToType is a base of FromType, returns zero otherwise
+    template <class ToType, class FromType>
+    FORCEINLINE ToType upcast(FromType input)
+    {
+        enum { probe = ImplicitConversion<FromType, ToType>::exists };
+        return detail::upcast<ToType, FromType>(input, Loki::Int2Type<probe>());
+    }
 }