diff -r cf82769eb136 -r 4d0fff61d65e src/Box.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/Box.h	Sun Aug 05 21:24:41 2012 -0700
@@ -0,0 +1,76 @@
+/* vim: set ts=4 sw=4 tw=99 et:
+ *
+ * Copyright (C) 2012 David Anderson
+ *
+ * This file is part of SourcePawn.
+ *
+ * SourcePawn is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option)
+ * any later version.
+ * 
+ * SourcePawn is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * SourcePawn. If not, see http://www.gnu.org/licenses/.
+ */
+#ifndef _include_sourcepawn_box_h_
+#define _include_sourcepawn_box_h_
+
+#include "Objects.h"
+#include "Handles.h"
+#include "Heap.h"
+#include "Types.h"
+
+namespace ke {
+
+class Type;
+
+class Box : public Object
+{
+    Barriered<Type> type_;
+    union {
+        Object *obj;
+        float f;
+        int i32;
+    } u;
+
+  public:
+    static Box *New(Zone *zone, Handle<Type> type, int i32, Heap::Tenure = Heap::Tenure_Default);
+    static Box *New(Zone *zone, Handle<Type> type, float f, Heap::Tenure = Heap::Tenure_Default);
+    static Box *New(Zone *zone, Handle<Type> type, Object *obj, Heap::Tenure = Heap::Tenure_Default);
+
+    Type *type() {
+        return type_;
+    }
+
+    int toInt32() {
+        assert(type()->pod() == PrimitiveType_Int32);
+        return u.i32;
+    }
+    float toFloat() {
+        assert(type()->pod() == PrimitiveType_Float);
+        return u.f;
+    }
+
+    // Begin GC descriptor.
+    static inline size_t offsetOfType() {
+        return OFFSETOF(Box, type_);
+    }
+    static inline size_t offsetOfObj() {
+        return OFFSETOF(Box, u.obj);
+    }
+    // End GC descriptor.
+    
+    static inline Box *cast(Object *obj) {
+        assert(!obj || obj->is(MapKind_Box));
+        return reinterpret_cast<Box *>(obj);
+    }
+};
+
+}
+
+#endif // _include_sourcepawn_box_h_
+