A first skeleton for introducing Harmony proxies

src/objects-inl.h

Index: src/objects-inl.h
===================================================================
--- src/objects-inl.h	(revision 7800)
+++ src/objects-inl.h	(working copy)
@@ -584,6 +584,12 @@
 }
 
 
+bool Object::IsJSProxy() {
+  return Object::IsHeapObject()
+      && HeapObject::cast(this)->map()->instance_type() == JS_PROXY_TYPE;
+}
+
+
 bool Object::IsProxy() {
   return Object::IsHeapObject()
       && HeapObject::cast(this)->map()->instance_type() == PROXY_TYPE;
@@ -1898,6 +1904,7 @@
 CAST_ACCESSOR(Code)
 CAST_ACCESSOR(JSArray)
 CAST_ACCESSOR(JSRegExp)
+CAST_ACCESSOR(JSProxy)
 CAST_ACCESSOR(Proxy)
 CAST_ACCESSOR(ByteArray)
 CAST_ACCESSOR(ExternalArray)
@@ -3508,6 +3515,9 @@
 }
 
 
+ACCESSORS(JSProxy, handler, Object, kHandlerOffset)
+
+
 Address Proxy::proxy() {
   return AddressFrom<Address>(READ_INTPTR_FIELD(this, kProxyOffset));
 }