api: Object::CachedProperty

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index a87ad63173c415587c72be73f9b538d6723aaa9a..b7faa9379f5e8506bc56a9772357078364493f7b 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -150,6 +150,9 @@
 namespace v8 {
 namespace internal {
 
+// Forward declarations
+class LookupCacheEntry;
+
 enum CompareMapMode {
   REQUIRE_EXACT_MAP,
   ALLOW_ELEMENT_TRANSITION_MAPS
@@ -9527,6 +9530,32 @@ class BooleanBit : public AllStatic {
   }
 };
 
+
+class LookupCache {
+ public:
+  explicit LookupCache(Isolate* isolate);
+  ~LookupCache();
+
+  void Lookup(Handle<Object> obj,
+              Handle<Name> name,
+              LookupResult* result,
+              bool set_property = false);
+  MUST_USE_RESULT MaybeObject* GetProperty(Handle<Object> obj,
+                                           Handle<Name> name);
+  MUST_USE_RESULT MaybeObject* SetProperty(Handle<Object> obj,
+                                           Handle<Name> name,
+                                           Handle<Object> value);
+
+ private:
+  static const int kCacheEntryCount = 7;
+
+  Isolate* isolate_;
+  int count_;
+  LookupCacheEntry* entries_[kCacheEntryCount];
+  int hidden_count_;
+  LookupCacheEntry* hidden_entries_[kCacheEntryCount];
+};
+
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_