[strong] Implement strong property access semantics

src/runtime/runtime.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_RUNTIME_RUNTIME_H_
 #define V8_RUNTIME_RUNTIME_H_
 
 #include "src/allocation.h"
 #include "src/objects.h"
 #include "src/zone.h"
@@ skipping 60 matching lines @@
   F(ThrowUnsupportedSuperError, 0, 1)         \
   F(ThrowConstructorNonCallableError, 0, 1)   \
   F(ThrowArrayNotSubclassableError, 0, 1)     \
   F(ThrowStaticPrototypeError, 0, 1)          \
   F(ThrowIfStaticPrototype, 1, 1)             \
   F(ToMethod, 2, 1)                           \
   F(HomeObjectSymbol, 0, 1)                   \
   F(DefineClass, 6, 1)                        \
   F(DefineClassMethod, 3, 1)                  \
   F(ClassGetSourceCode, 1, 1)                 \
-  F(LoadFromSuper, 3, 1)                      \
-  F(LoadKeyedFromSuper, 3, 1)                 \
+  F(LoadFromSuper, 4, 1)                      \
+  F(LoadKeyedFromSuper, 4, 1)                 \
   F(StoreToSuper_Strict, 4, 1)                \
   F(StoreToSuper_Sloppy, 4, 1)                \
   F(StoreKeyedToSuper_Strict, 4, 1)           \
   F(StoreKeyedToSuper_Sloppy, 4, 1)           \
   F(HandleStepInForDerivedConstructors, 1, 1) \
   F(DefaultConstructorCallSuper, 2, 1)        \
   F(CallSuperWithSpread, 1, 1)
 
 
 #define FOR_EACH_INTRINSIC_COLLECTIONS(F) \
@@ skipping 336 matching lines @@
   F(IsInPrototypeChain, 2, 1)                        \
   F(GetOwnProperty, 2, 1)                            \
   F(PreventExtensions, 1, 1)                         \
   F(IsExtensible, 1, 1)                              \
   F(DisableAccessChecks, 1, 1)                       \
   F(EnableAccessChecks, 1, 1)                        \
   F(OptimizeObjectForAddingMultipleProperties, 2, 1) \
   F(ObjectFreeze, 1, 1)                              \
   F(ObjectSeal, 1, 1)                                \
   F(GetProperty, 2, 1)                               \
+  F(GetPropertyStrong, 2, 1)                         \
   F(KeyedGetProperty, 2, 1)                          \
+  F(KeyedGetPropertyStrong, 2, 1)                    \
   F(AddNamedProperty, 4, 1)                          \
   F(SetProperty, 4, 1)                               \
   F(AddElement, 3, 1)                                \
   F(AppendElement, 2, 1)                             \
   F(DeleteProperty, 3, 1)                            \
   F(HasOwnProperty, 2, 1)                            \
   F(HasProperty, 2, 1)                               \
   F(HasElement, 2, 1)                                \
   F(IsPropertyEnumerable, 2, 1)                      \
   F(GetPropertyNames, 1, 1)                          \
@@ skipping 362 matching lines @@
 
   // Get the intrinsic function with the given function entry address.
   static const Function* FunctionForEntry(Address ref);
 
   // TODO(1240886): Some of the following methods are *not* handle safe, but
   // accept handle arguments. This seems fragile.
 
   // Support getting the characters in a string using [] notation as
   // in Firefox/SpiderMonkey, Safari and Opera.
   MUST_USE_RESULT static MaybeHandle<Object> GetElementOrCharAt(
-      Isolate* isolate, Handle<Object> object, uint32_t index);
+      Isolate* isolate, Handle<Object> object, uint32_t index,
+      LanguageMode language_mode = SLOPPY);
 
   MUST_USE_RESULT static MaybeHandle<Object> SetObjectProperty(
       Isolate* isolate, Handle<Object> object, Handle<Object> key,
       Handle<Object> value, LanguageMode language_mode);
 
   MUST_USE_RESULT static MaybeHandle<Object> GetObjectProperty(
-      Isolate* isolate, Handle<Object> object, Handle<Object> key);
+      Isolate* isolate, Handle<Object> object, Handle<Object> key,
+      LanguageMode language_mode = SLOPPY);
+
+  MUST_USE_RESULT static MaybeHandle<Object> KeyedGetObjectProperty(
+      Isolate* isolate, Handle<Object> receiver_obj, Handle<Object> key_obj,
+      LanguageMode language_mode);
 
   MUST_USE_RESULT static MaybeHandle<Object> GetPrototype(
       Isolate* isolate, Handle<Object> object);
 
   MUST_USE_RESULT static MaybeHandle<Name> ToName(Isolate* isolate,
                                                   Handle<Object> key);
 
   static void SetupArrayBuffer(Isolate* isolate,
                                Handle<JSArrayBuffer> array_buffer,
                                bool is_external, void* data,
@@ skipping 90 matching lines @@
 inline bool Runtime::AtomicIsLockFree(uint32_t size) {
   return size == 1 || size == 2 || size == 4;
 }
 
 #endif
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_RUNTIME_RUNTIME_H_