Changeset 3810

Timestamp:

07/26/08 15:33:57 (4 months ago)

Author:

sean

Message:

Added support for storing and retrieving interfaces. This closes #1057

Files:

• trunk/tango/core/Variant.d (modified) (6 diffs)

trunk/tango/core/Variant.d

@@ -95 +95 @@
-    }
-
+    template isInterface(T)
+    {
+        static if( is( T == interface ) )
+            const isInterface = true;
+        else
+            const isInterface = false;
+    }
+
-    template isStaticArray(T)
-    {
@@ -279 +287 @@
-                this.value.obj = value;
-            }
+            else static if( isInterface!(T) )
+            {
+                this.value.obj = cast(Object) value;
+            }
-            else
-            {
@@ -366 +378 @@
-                // Let D do runtime check itself
-                && !isObject!(T)
+                && !isInterface!(T)
-                // Allow implicit upcasts
-                && !canImplicitCastTo!(T)(type)
@@ -411 +424 @@
-        }
-        else static if( isObject!(T) )
+        {
+            return cast(T)this.value.obj;
+        }
+        else static if( isInterface!(T) )
-        {
-            return cast(T)this.value.obj;
@@ -614 +631 @@
-        }
-
+        // Test interface support
+        {
+            interface A {}
+            interface B : A {}
+            class C : B {}
+            class D : C {}
+
+            A a = new D;
+            Variant v = a;
+            B b = v.get!(B);
+            C c = v.get!(C);
+            D d = v.get!(D);
+        }
+
-        // Test doubles and implicit casting
-        v = 3.1413;
@@ -704 +735 @@
-    }
-}
-