[stubs] Implementing CodeStubAssembler::GetOwnProperty().

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index a7aabe23e0f856b18734e09f3fe4f40c7b4b508d..d160e7b46a6ba1d2a45719321b3e6bcd4a27f179 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -3234,10 +3234,12 @@ class HashTable : public HashTableBase {
   void Rehash(Key key);
 
   // Returns the key at entry.
-  Object* KeyAt(int entry) { return get(EntryToIndex(entry)); }
+  Object* KeyAt(int entry) { return get(EntryToIndex(entry) + kEntryKeyIndex); }
 
   static const int kElementsStartIndex = kPrefixStartIndex + Shape::kPrefixSize;
   static const int kEntrySize = Shape::kEntrySize;
+  STATIC_ASSERT(kEntrySize > 0);
+  static const int kEntryKeyIndex = 0;
   static const int kElementsStartOffset =
       kHeaderSize + kElementsStartIndex * kPointerSize;
   static const int kCapacityOffset =
@@ -3552,15 +3554,16 @@ class BaseDictionaryShape : public BaseShape<Key> {
   static inline PropertyDetails DetailsAt(Dictionary* dict, int entry) {
     STATIC_ASSERT(Dictionary::kEntrySize == 3);
     DCHECK(entry >= 0);  // Not found is -1, which is not caught by get().
-    return PropertyDetails(
-        Smi::cast(dict->get(Dictionary::EntryToIndex(entry) + 2)));
+    return PropertyDetails(Smi::cast(dict->get(
+        Dictionary::EntryToIndex(entry) + Dictionary::kEntryDetailsIndex)));
   }
 
   template <typename Dictionary>
   static inline void DetailsAtPut(Dictionary* dict, int entry,
                                   PropertyDetails value) {
     STATIC_ASSERT(Dictionary::kEntrySize == 3);
-    dict->set(Dictionary::EntryToIndex(entry) + 2, value.AsSmi());
+    dict->set(Dictionary::EntryToIndex(entry) + Dictionary::kEntryDetailsIndex,
+              value.AsSmi());
   }
 
   template <typename Dictionary>
@@ -3582,6 +3585,8 @@ class NameDictionaryShape : public BaseDictionaryShape<Handle<Name> > {
   static inline Handle<Object> AsHandle(Isolate* isolate, Handle<Name> key);
   static const int kPrefixSize = 2;
   static const int kEntrySize = 3;
+  static const int kEntryValueIndex = 1;
+  static const int kEntryDetailsIndex = 2;
   static const bool kIsEnumerable = true;
 };
 
@@ -3596,6 +3601,9 @@ class NameDictionary
 
   inline static Handle<FixedArray> DoGenerateNewEnumerationIndices(
       Handle<NameDictionary> dictionary);
+
+  static const int kEntryValueIndex = 1;
+  static const int kEntryDetailsIndex = 2;
 };
 
 
@@ -3623,6 +3631,8 @@ class GlobalDictionary
     : public NameDictionaryBase<GlobalDictionary, GlobalDictionaryShape> {
  public:
   DECLARE_CAST(GlobalDictionary)
+
+  static const int kEntryValueIndex = 1;
 };
 
 
@@ -3696,6 +3706,9 @@ class SeededNumberDictionary
   // requires_slow_elements returns false.
   inline uint32_t max_number_key();
 
+  static const int kEntryValueIndex = 1;
+  static const int kEntryDetailsIndex = 2;
+
   // Bit masks.
   static const int kRequiresSlowElementsMask = 1;
   static const int kRequiresSlowElementsTagSize = 1;
@@ -3726,6 +3739,9 @@ class UnseededNumberDictionary
       Handle<UnseededNumberDictionary> dictionary,
       uint32_t key,
       Handle<Object> value);
+
+  static const int kEntryValueIndex = 1;
+  static const int kEntryDetailsIndex = 2;
 };