api: Object::CachedProperty

src/runtime.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 4241 matching lines @@
 MaybeObject* Runtime::GetObjectPropertyOrFail(
     Isolate* isolate,
     Handle<Object> object,
     Handle<Object> key) {
   CALL_HEAP_FUNCTION_PASS_EXCEPTION(isolate,
       GetObjectProperty(isolate, object, key));
 }
 
 MaybeObject* Runtime::GetObjectProperty(Isolate* isolate,
                                         Handle<Object> object,
-                                        Handle<Object> key) {
+                                        Handle<Object> key,
+                                        LookupCache* cache) {
   HandleScope scope(isolate);
 
   if (object->IsUndefined() || object->IsNull()) {
     Handle<Object> args[2] = { key, object };
     Handle<Object> error =
         isolate->factory()->NewTypeError("non_object_property_load",
                                          HandleVector(args, 2));
     return isolate->Throw(*error);
   }
 
@@ skipping 12 matching lines @@
     Handle<Object> converted =
         Execution::ToString(key, &has_pending_exception);
     if (has_pending_exception) return Failure::Exception();
     name = Handle<Name>::cast(converted);
   }
 
   // Check if the name is trivially convertible to an index and get
   // the element if so.
   if (name->AsArrayIndex(&index)) {
     return GetElementOrCharAt(isolate, object, index);
+  } else if (cache == NULL) {
+    return object->GetProperty(*name);
   } else {
-    return object->GetProperty(*name);
+    return cache->GetProperty(object, name);
   }
 }
 
 
 RUNTIME_FUNCTION(MaybeObject*, Runtime_GetProperty) {
   NoHandleAllocation ha(isolate);
   ASSERT(args.length() == 2);
 
   Handle<Object> object = args.at<Object>(0);
   Handle<Object> key = args.at<Object>(1);
@@ skipping 243 matching lines @@
   CALL_HEAP_FUNCTION_PASS_EXCEPTION(isolate,
       SetObjectProperty(isolate, object, key, value, attr, strict_mode));
 }
 
 
 MaybeObject* Runtime::SetObjectProperty(Isolate* isolate,
                                         Handle<Object> object,
                                         Handle<Object> key,
                                         Handle<Object> value,
                                         PropertyAttributes attr,
-                                        StrictModeFlag strict_mode) {
+                                        StrictModeFlag strict_mode,
+                                        LookupCache* cache) {
   SetPropertyMode set_mode = attr == NONE ? SET_PROPERTY : DEFINE_PROPERTY;
   HandleScope scope(isolate);
 
   if (object->IsUndefined() || object->IsNull()) {
     Handle<Object> args[2] = { key, object };
     Handle<Object> error =
         isolate->factory()->NewTypeError("non_object_property_store",
                                          HandleVector(args, 2));
     return isolate->Throw(*error);
   }
@@ skipping 35 matching lines @@
   }
 
   if (key->IsName()) {
     Handle<Object> result;
     Handle<Name> name = Handle<Name>::cast(key);
     if (name->AsArrayIndex(&index)) {
       result = JSObject::SetElement(
           js_object, index, value, attr, strict_mode, set_mode);
     } else {
       if (name->IsString()) Handle<String>::cast(name)->TryFlatten();
-      result = JSReceiver::SetProperty(
-          js_object, name, value, attr, strict_mode);
+      if (cache == NULL || attr != NONE || strict_mode != kNonStrictMode) {
+        result = JSReceiver::SetProperty(
+            js_object, name, value, attr, strict_mode);
+      } else {
+        return cache->SetProperty(js_object, name, value);
+      }
     }
     if (result.is_null()) return Failure::Exception();
     return *value;
   }
 
   // Call-back into JavaScript to convert the key to a string.
   bool has_pending_exception = false;
   Handle<Object> converted = Execution::ToString(key, &has_pending_exception);
   if (has_pending_exception) return Failure::Exception();
   Handle<String> name = Handle<String>::cast(converted);
@@ skipping 8741 matching lines @@
     // Handle last resort GC and make sure to allow future allocations
     // to grow the heap without causing GCs (if possible).
     isolate->counters()->gc_last_resort_from_js()->Increment();
     isolate->heap()->CollectAllGarbage(Heap::kNoGCFlags,
                                        "Runtime::PerformGC");
   }
 }
 
 
 } }  // namespace v8::internal