diff -r 27f12e2fc369 -r 46fc53b8fd2f jitcraft/Types.h
--- a/jitcraft/Types.h	Mon Jun 25 21:20:01 2012 -0700
+++ b/jitcraft/Types.h	Tue Jun 26 00:35:15 2012 -0700
@@ -104,6 +104,30 @@
     unsigned levels_;
 };
 
+class BoxedPrimitive
+{
+    PrimitiveType type_;
+    union {
+        int i_;
+    };
+
+  public:
+    static BoxedPrimitive Int(int i) {
+        BoxedPrimitive b;
+        b.type_ = PrimitiveType_Int32;
+        b.i_ = i;
+        return b;
+    }
+
+    PrimitiveType type() const {
+        return type_;
+    }
+    int toInt() const {
+        assert(type() == PrimitiveType_Int32);
+        return i_;
+    }
+};
+
 }
 
 #endif // _include_jc_types_h_