api: Object::CachedProperty

include/v8.h

Index: include/v8.h
diff --git a/include/v8.h b/include/v8.h
index f300884965233b2d92eac5099e0731ab2bad7c97..3cd82cb7551f41f1f41360547ee6042e5048ca93 100644
--- a/include/v8.h
+++ b/include/v8.h
@@ -150,6 +150,7 @@ class Heap;
 class HeapObject;
 class Isolate;
 class Object;
+class LookupCache;
 }
 
 
@@ -1682,12 +1683,27 @@ enum AccessControl {
  */
 class V8EXPORT Object : public Value {
  public:
+  class V8EXPORT CachedProperty {
+   public:
+    explicit CachedProperty(Handle<String> key);
+
+   protected:
+    internal::LookupCache* cache_;
+    Persistent<String> key_;
+
+    friend class Object;
+  };
+
   bool Set(Handle<Value> key,
            Handle<Value> value,
            PropertyAttribute attribs = None);
 
   bool Set(uint32_t index, Handle<Value> value);
 
+  bool Set(CachedProperty key,
+           Handle<Value> value,
+           PropertyAttribute attribs = None);
+
   // Sets a local property on this object bypassing interceptors and
   // overriding accessors or read-only properties.
   //
@@ -1704,6 +1720,8 @@ class V8EXPORT Object : public Value {
 
   Local<Value> Get(uint32_t index);
 
+  Local<Value> Get(CachedProperty key);
+
   /**
    * Gets the property attributes of a property which can be None or
    * any combination of ReadOnly, DontEnum and DontDelete. Returns