Update gc branch to bleeding_edge revision 8862.

src/objects.h

 // Copyright 2011 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 34 matching lines @@
 //
 // Inheritance hierarchy:
 // - MaybeObject    (an object or a failure)
 //   - Failure      (immediate for marking failed operation)
 //   - Object
 //     - Smi          (immediate small integer)
 //     - HeapObject   (superclass for everything allocated in the heap)
 //       - JSReceiver  (suitable for property access)
 //         - JSObject
 //           - JSArray
+//           - JSWeakMap
 //           - JSRegExp
 //           - JSFunction
 //           - GlobalObject
 //             - JSGlobalObject
 //             - JSBuiltinsObject
 //           - JSGlobalProxy
 //           - JSValue
 //           - JSMessageObject
 //         - JSProxy
 //           - JSFunctionProxy
 //       - ByteArray
 //       - FreeSpace
 //       - ExternalArray
 //         - ExternalPixelArray
 //         - ExternalByteArray
 //         - ExternalUnsignedByteArray
 //         - ExternalShortArray
 //         - ExternalUnsignedShortArray
 //         - ExternalIntArray
 //         - ExternalUnsignedIntArray
 //         - ExternalFloatArray
-//       - FixedArray
-//         - DescriptorArray
-//         - HashTable
-//           - Dictionary
-//           - SymbolTable
-//           - CompilationCacheTable
-//           - CodeCacheHashTable
-//           - MapCache
-//         - Context
-//         - JSFunctionResultCache
-//         - SerializedScopeInfo
+//       - FixedArrayBase
+//         - FixedArray
+//           - DescriptorArray
+//           - HashTable
+//             - Dictionary
+//             - SymbolTable
+//             - CompilationCacheTable
+//             - CodeCacheHashTable
+//             - MapCache
+//           - Context
+//           - JSFunctionResultCache
+//           - SerializedScopeInfo
+//         - FixedDoubleArray
 //       - String
 //         - SeqString
 //           - SeqAsciiString
 //           - SeqTwoByteString
 //         - ConsString
 //         - ExternalString
 //           - ExternalAsciiString
 //           - ExternalTwoByteString
 //       - HeapNumber
 //       - Code
@@ skipping 230 matching lines @@
   V(JS_MESSAGE_OBJECT_TYPE)                                                    \
                                                                                \
   V(JS_VALUE_TYPE)                                                             \
   V(JS_OBJECT_TYPE)                                                            \
   V(JS_CONTEXT_EXTENSION_OBJECT_TYPE)                                          \
   V(JS_GLOBAL_OBJECT_TYPE)                                                     \
   V(JS_BUILTINS_OBJECT_TYPE)                                                   \
   V(JS_GLOBAL_PROXY_TYPE)                                                      \
   V(JS_ARRAY_TYPE)                                                             \
   V(JS_PROXY_TYPE)                                                             \
+  V(JS_WEAK_MAP_TYPE)                                                          \
   V(JS_REGEXP_TYPE)                                                            \
                                                                                \
   V(JS_FUNCTION_TYPE)                                                          \
   V(JS_FUNCTION_PROXY_TYPE)                                                    \
 
 #ifdef ENABLE_DEBUGGER_SUPPORT
 #define INSTANCE_TYPE_LIST_DEBUGGER(V)                                         \
   V(DEBUG_INFO_TYPE)                                                           \
   V(BREAK_POINT_INFO_TYPE)
 #else
@@ skipping 218 matching lines @@
   JS_MESSAGE_OBJECT_TYPE,
 
   JS_VALUE_TYPE,  // FIRST_NON_CALLABLE_OBJECT_TYPE, FIRST_JS_RECEIVER_TYPE
   JS_OBJECT_TYPE,
   JS_CONTEXT_EXTENSION_OBJECT_TYPE,
   JS_GLOBAL_OBJECT_TYPE,
   JS_BUILTINS_OBJECT_TYPE,
   JS_GLOBAL_PROXY_TYPE,
   JS_ARRAY_TYPE,
   JS_PROXY_TYPE,
+  JS_WEAK_MAP_TYPE,
 
   JS_REGEXP_TYPE,  // LAST_NONCALLABLE_SPEC_OBJECT_TYPE
 
   JS_FUNCTION_TYPE,  // FIRST_CALLABLE_SPEC_OBJECT_TYPE
   JS_FUNCTION_PROXY_TYPE,  // LAST_CALLABLE_SPEC_OBJECT_TYPE
 
   // Pseudo-types
   FIRST_TYPE = 0x0,
   LAST_TYPE = JS_FUNCTION_PROXY_TYPE,
   INVALID_TYPE = FIRST_TYPE - 1,
@@ skipping 42 matching lines @@
   inline bool name();                  \
   inline void set_##name(bool value);  \
 
 
 #define DECL_ACCESSORS(name, type)                                      \
   inline type* name();                                                  \
   inline void set_##name(type* value,                                   \
                          WriteBarrierMode mode = UPDATE_WRITE_BARRIER); \
 
 
+class ElementsAccessor;
 class StringStream;
 class ObjectVisitor;
+class DictionaryElementsAccessor;
 class Failure;
 
 struct ValueInfo : public Malloced {
   ValueInfo() : type(FIRST_TYPE), ptr(NULL), str(NULL), number(0) { }
   InstanceType type;
   Object* ptr;
   const char* str;
   double number;
 };
 
@@ skipping 97 matching lines @@
   V(Oddball)                                   \
   V(SharedFunctionInfo)                        \
   V(JSValue)                                   \
   V(JSMessageObject)                           \
   V(StringWrapper)                             \
   V(Foreign)                                   \
   V(Boolean)                                   \
   V(JSArray)                                   \
   V(JSProxy)                                   \
   V(JSFunctionProxy)                           \
+  V(JSWeakMap)                                 \
   V(JSRegExp)                                  \
   V(HashTable)                                 \
   V(Dictionary)                                \
   V(SymbolTable)                               \
   V(JSFunctionResultCache)                     \
   V(NormalizedMapCache)                        \
   V(CompilationCacheTable)                     \
   V(CodeCacheHashTable)                        \
   V(PolymorphicCodeCacheHashTable)             \
   V(MapCache)                                  \
@@ skipping 611 matching lines @@
   // writing to any element the array must be copied. Use
   // EnsureWritableFastElements in this case.
   //
   // In the slow mode the elements is either a NumberDictionary, an
   // ExternalArray, or a FixedArray parameter map for a (non-strict)
   // arguments object.
   DECL_ACCESSORS(elements, HeapObject)
   inline void initialize_elements();
   MUST_USE_RESULT inline MaybeObject* ResetElements();
   inline ElementsKind GetElementsKind();
+  inline ElementsAccessor* GetElementsAccessor();
   inline bool HasFastElements();
   inline bool HasFastDoubleElements();
   inline bool HasDictionaryElements();
   inline bool HasExternalPixelElements();
   inline bool HasExternalArrayElements();
   inline bool HasExternalByteElements();
   inline bool HasExternalUnsignedByteElements();
   inline bool HasExternalShortElements();
   inline bool HasExternalUnsignedShortElements();
   inline bool HasExternalIntElements();
@@ skipping 222 matching lines @@
 
   // Set the index'th array element.
   // A Failure object is returned if GC is needed.
   MUST_USE_RESULT MaybeObject* SetElement(uint32_t index,
                                           Object* value,
                                           StrictModeFlag strict_mode,
                                           bool check_prototype);
 
   // Returns the index'th element.
   // The undefined object if index is out of bounds.
-  MaybeObject* GetElementWithReceiver(Object* receiver, uint32_t index);
   MaybeObject* GetElementWithInterceptor(Object* receiver, uint32_t index);
 
-  // Get external element value at index if there is one and undefined
-  // otherwise. Can return a failure if allocation of a heap number
-  // failed.
-  MaybeObject* GetExternalElement(uint32_t index);
-
   // Replace the elements' backing store with fast elements of the given
   // capacity.  Update the length for JSArrays.  Returns the new backing
   // store.
   MUST_USE_RESULT MaybeObject* SetFastElementsCapacityAndLength(int capacity,
                                                                 int length);
   MUST_USE_RESULT MaybeObject* SetFastDoubleElementsCapacityAndLength(
       int capacity,
       int length);
   MUST_USE_RESULT MaybeObject* SetSlowElements(Object* length);
 
@@ skipping 243 matching lines @@
   static const int kHeaderSize = kElementsOffset + kPointerSize;
 
   STATIC_CHECK(kHeaderSize == Internals::kJSObjectHeaderSize);
 
   class BodyDescriptor : public FlexibleBodyDescriptor<kPropertiesOffset> {
    public:
     static inline int SizeOf(Map* map, HeapObject* object);
   };
 
  private:
+  friend class DictionaryElementsAccessor;
+
   MUST_USE_RESULT MaybeObject* GetElementWithCallback(Object* receiver,
                                                       Object* structure,
                                                       uint32_t index,
                                                       Object* holder);
   MaybeObject* SetElementWithCallback(Object* structure,
                                       uint32_t index,
                                       Object* value,
                                       JSObject* holder,
                                       StrictModeFlag strict_mode);
   MUST_USE_RESULT MaybeObject* SetElementWithInterceptor(
       uint32_t index,
       Object* value,
       StrictModeFlag strict_mode,
       bool check_prototype);
   MUST_USE_RESULT MaybeObject* SetElementWithoutInterceptor(
       uint32_t index,
       Object* value,
       StrictModeFlag strict_mode,
       bool check_prototype);
 
-  MaybeObject* GetElementPostInterceptor(Object* receiver, uint32_t index);
-
   MUST_USE_RESULT MaybeObject* DeletePropertyPostInterceptor(String* name,
                                                              DeleteMode mode);
   MUST_USE_RESULT MaybeObject* DeletePropertyWithInterceptor(String* name);
 
-  MUST_USE_RESULT MaybeObject* DeleteElementPostInterceptor(uint32_t index,
-                                                            DeleteMode mode);
   MUST_USE_RESULT MaybeObject* DeleteElementWithInterceptor(uint32_t index);
 
   MUST_USE_RESULT MaybeObject* DeleteFastElement(uint32_t index);
   MUST_USE_RESULT MaybeObject* DeleteDictionaryElement(uint32_t index,
                                                        DeleteMode mode);
 
   bool ReferencesObjectFromElements(FixedArray* elements,
                                     ElementsKind kind,
                                     Object* object);
   bool HasElementInElements(FixedArray* elements,
@@ skipping 43 matching lines @@
 
 class FixedDoubleArray;
 
 // FixedArray describes fixed-sized arrays with element type Object*.
 class FixedArray: public FixedArrayBase {
  public:
   // Setter and getter for elements.
   inline Object* get(int index);
   // Setter that uses write barrier.
   inline void set(int index, Object* value);
+  inline bool is_the_hole(int index);
 
   // Setter that doesn't need write barrier).
   inline void set(int index, Smi* value);
   // Setter with explicit barrier mode.
   inline void set(int index, Object* value, WriteBarrierMode mode);
 
   // Setters for frequently used oddballs located in old space.
   inline void set_undefined(int index);
   // TODO(isolates): duplicate.
   inline void set_undefined(Heap* heap, int index);
@@ skipping 85 matching lines @@
 
 
 // FixedDoubleArray describes fixed-sized arrays with element type double.
 class FixedDoubleArray: public FixedArrayBase {
  public:
   inline void Initialize(FixedArray* from);
   inline void Initialize(FixedDoubleArray* from);
   inline void Initialize(NumberDictionary* from);
 
   // Setter and getter for elements.
-  inline double get(int index);
+  inline double get_scalar(int index);
+  inline MaybeObject* get(int index);
   inline void set(int index, double value);
   inline void set_the_hole(int index);
 
   // Checking for the hole.
   inline bool is_the_hole(int index);
 
   // Garbage collection support.
   inline static int SizeFor(int length) {
     return kHeaderSize + length * kDoubleSize;
   }
@@ skipping 587 matching lines @@
 
   // Returns the number of enumerable elements in the dictionary.
   int NumberOfEnumElements();
 
   enum SortMode { UNSORTED, SORTED };
   // Copies keys to preallocated fixed array.
   void CopyKeysTo(FixedArray* storage,
                   PropertyAttributes filter,
                   SortMode sort_mode);
   // Fill in details for properties into storage.
-  void CopyKeysTo(FixedArray* storage, SortMode sort_mode);
+  void CopyKeysTo(FixedArray* storage, int index, SortMode sort_mode);
 
   // Accessors for next enumeration index.
   void SetNextEnumerationIndex(int index) {
     this->fast_set(this, kNextEnumerationIndexIndex, Smi::FromInt(index));
   }
 
   int NextEnumerationIndex() {
     return Smi::cast(FixedArray::get(kNextEnumerationIndexIndex))->value();
   }
 
@@ skipping 153 matching lines @@
 
   // Looks up the value associated with the given key. The undefined value is
   // returned in case the key is not present.
   Object* Lookup(JSObject* key);
 
   // Adds (or overwrites) the value associated with the given key. Mapping a
   // key to the undefined value causes removal of the whole entry.
   MUST_USE_RESULT MaybeObject* Put(JSObject* key, Object* value);
 
  private:
+  friend class MarkCompactCollector;
+
   void AddEntry(int entry, JSObject* key, Object* value);
-  void RemoveEntry(int entry);
+  void RemoveEntry(int entry, Heap* heap);
+  inline void RemoveEntry(int entry);
+
+  // Returns the index to the value of an entry.
+  static inline int EntryToValueIndex(int entry) {
+    return EntryToIndex(entry) + 1;
+  }
 };
 
 
 // JSFunctionResultCache caches results of some JSFunction invocation.
 // It is a fixed array with fixed structure:
 //   [0]: factory function
 //   [1]: finger index
 //   [2]: current cache size
 //   [3]: dummy field.
 // The rest of array are key/value pairs.
@@ skipping 167 matching lines @@
 // The semantics of these arrays differ from CanvasPixelArray.
 // Out-of-range values passed to the setter are converted via a C
 // cast, not clamping. Out-of-range indices cause exceptions to be
 // raised rather than being silently ignored.
 class ExternalArray: public HeapObject {
  public:
   // [length]: length of the array.
   inline int length();
   inline void set_length(int value);
 
+  inline bool is_the_hole(int index) { return false; }
+
   // [external_pointer]: The pointer to the external memory area backing this
   // external array.
   DECL_ACCESSORS(external_pointer, void)  // Pointer to the data store.
 
   // Casting.
   static inline ExternalArray* cast(Object* obj);
 
   // Maximal acceptable length for an external array.
   static const int kMaxLength = 0x3fffffff;
 
@@ skipping 15 matching lines @@
 
 // http://www.whatwg.org/specs/web-apps/current-work/
 //                      multipage/the-canvas-element.html#canvaspixelarray
 // In particular, write access clamps the value written to 0 or 255 if the
 // value written is outside this range.
 class ExternalPixelArray: public ExternalArray {
  public:
   inline uint8_t* external_pixel_pointer();
 
   // Setter and getter.
-  inline uint8_t get(int index);
+  inline uint8_t get_scalar(int index);
+  inline MaybeObject* get(int index);
   inline void set(int index, uint8_t value);
 
   // This accessor applies the correct conversion from Smi, HeapNumber and
   // undefined and clamps the converted value between 0 and 255.
   Object* SetValue(uint32_t index, Object* value);
 
   // Casting.
   static inline ExternalPixelArray* cast(Object* obj);
 
 #ifdef OBJECT_PRINT
   inline void ExternalPixelArrayPrint() {
     ExternalPixelArrayPrint(stdout);
   }
   void ExternalPixelArrayPrint(FILE* out);
 #endif
 #ifdef DEBUG
   void ExternalPixelArrayVerify();
 #endif  // DEBUG
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(ExternalPixelArray);
 };
 
 
 class ExternalByteArray: public ExternalArray {
  public:
   // Setter and getter.
-  inline int8_t get(int index);
+  inline int8_t get_scalar(int index);
+  inline MaybeObject* get(int index);
   inline void set(int index, int8_t value);
 
   // This accessor applies the correct conversion from Smi, HeapNumber
   // and undefined.
   MaybeObject* SetValue(uint32_t index, Object* value);
 
   // Casting.
   static inline ExternalByteArray* cast(Object* obj);
 
 #ifdef OBJECT_PRINT
   inline void ExternalByteArrayPrint() {
     ExternalByteArrayPrint(stdout);
   }
   void ExternalByteArrayPrint(FILE* out);
 #endif
 #ifdef DEBUG
   void ExternalByteArrayVerify();
 #endif  // DEBUG
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(ExternalByteArray);
 };
 
 
 class ExternalUnsignedByteArray: public ExternalArray {
  public:
   // Setter and getter.
-  inline uint8_t get(int index);
+  inline uint8_t get_scalar(int index);
+  inline MaybeObject* get(int index);
   inline void set(int index, uint8_t value);
 
   // This accessor applies the correct conversion from Smi, HeapNumber
   // and undefined.
   MaybeObject* SetValue(uint32_t index, Object* value);
 
   // Casting.
   static inline ExternalUnsignedByteArray* cast(Object* obj);
 
 #ifdef OBJECT_PRINT
   inline void ExternalUnsignedByteArrayPrint() {
     ExternalUnsignedByteArrayPrint(stdout);
   }
   void ExternalUnsignedByteArrayPrint(FILE* out);
 #endif
 #ifdef DEBUG
   void ExternalUnsignedByteArrayVerify();
 #endif  // DEBUG
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(ExternalUnsignedByteArray);
 };
 
 
 class ExternalShortArray: public ExternalArray {
  public:
   // Setter and getter.
-  inline int16_t get(int index);
+  inline int16_t get_scalar(int index);
+  inline MaybeObject* get(int index);
   inline void set(int index, int16_t value);
 
   // This accessor applies the correct conversion from Smi, HeapNumber
   // and undefined.
   MaybeObject* SetValue(uint32_t index, Object* value);
 
   // Casting.
   static inline ExternalShortArray* cast(Object* obj);
 
 #ifdef OBJECT_PRINT
   inline void ExternalShortArrayPrint() {
     ExternalShortArrayPrint(stdout);
   }
   void ExternalShortArrayPrint(FILE* out);
 #endif
 #ifdef DEBUG
   void ExternalShortArrayVerify();
 #endif  // DEBUG
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(ExternalShortArray);
 };
 
 
 class ExternalUnsignedShortArray: public ExternalArray {
  public:
   // Setter and getter.
-  inline uint16_t get(int index);
+  inline uint16_t get_scalar(int index);
+  inline MaybeObject* get(int index);
   inline void set(int index, uint16_t value);
 
   // This accessor applies the correct conversion from Smi, HeapNumber
   // and undefined.
   MaybeObject* SetValue(uint32_t index, Object* value);
 
   // Casting.
   static inline ExternalUnsignedShortArray* cast(Object* obj);
 
 #ifdef OBJECT_PRINT
   inline void ExternalUnsignedShortArrayPrint() {
     ExternalUnsignedShortArrayPrint(stdout);
   }
   void ExternalUnsignedShortArrayPrint(FILE* out);
 #endif
 #ifdef DEBUG
   void ExternalUnsignedShortArrayVerify();
 #endif  // DEBUG
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(ExternalUnsignedShortArray);
 };
 
 
 class ExternalIntArray: public ExternalArray {
  public:
   // Setter and getter.
-  inline int32_t get(int index);
+  inline int32_t get_scalar(int index);
+  inline MaybeObject* get(int index);
   inline void set(int index, int32_t value);
 
   // This accessor applies the correct conversion from Smi, HeapNumber
   // and undefined.
   MaybeObject* SetValue(uint32_t index, Object* value);
 
   // Casting.
   static inline ExternalIntArray* cast(Object* obj);
 
 #ifdef OBJECT_PRINT
   inline void ExternalIntArrayPrint() {
     ExternalIntArrayPrint(stdout);
   }
   void ExternalIntArrayPrint(FILE* out);
 #endif
 #ifdef DEBUG
   void ExternalIntArrayVerify();
 #endif  // DEBUG
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(ExternalIntArray);
 };
 
 
 class ExternalUnsignedIntArray: public ExternalArray {
  public:
   // Setter and getter.
-  inline uint32_t get(int index);
+  inline uint32_t get_scalar(int index);
+  inline MaybeObject* get(int index);
   inline void set(int index, uint32_t value);
 
   // This accessor applies the correct conversion from Smi, HeapNumber
   // and undefined.
   MaybeObject* SetValue(uint32_t index, Object* value);
 
   // Casting.
   static inline ExternalUnsignedIntArray* cast(Object* obj);
 
 #ifdef OBJECT_PRINT
   inline void ExternalUnsignedIntArrayPrint() {
     ExternalUnsignedIntArrayPrint(stdout);
   }
   void ExternalUnsignedIntArrayPrint(FILE* out);
 #endif
 #ifdef DEBUG
   void ExternalUnsignedIntArrayVerify();
 #endif  // DEBUG
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(ExternalUnsignedIntArray);
 };
 
 
 class ExternalFloatArray: public ExternalArray {
  public:
   // Setter and getter.
-  inline float get(int index);
+  inline float get_scalar(int index);
+  inline MaybeObject* get(int index);
   inline void set(int index, float value);
 
   // This accessor applies the correct conversion from Smi, HeapNumber
   // and undefined.
   MaybeObject* SetValue(uint32_t index, Object* value);
 
   // Casting.
   static inline ExternalFloatArray* cast(Object* obj);
 
 #ifdef OBJECT_PRINT
   inline void ExternalFloatArrayPrint() {
     ExternalFloatArrayPrint(stdout);
   }
   void ExternalFloatArrayPrint(FILE* out);
 #endif
 #ifdef DEBUG
   void ExternalFloatArrayVerify();
 #endif  // DEBUG
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(ExternalFloatArray);
 };
 
 
 class ExternalDoubleArray: public ExternalArray {
  public:
   // Setter and getter.
-  inline double get(int index);
+  inline double get_scalar(int index);
+  inline MaybeObject* get(int index);
   inline void set(int index, double value);
 
   // This accessor applies the correct conversion from Smi, HeapNumber
   // and undefined.
   MaybeObject* SetValue(uint32_t index, Object* value);
 
   // Casting.
   static inline ExternalDoubleArray* cast(Object* obj);
 
 #ifdef OBJECT_PRINT
@@ skipping 1228 matching lines @@
 
   // Position of this function in the script source.
   inline int start_position();
   inline void set_start_position(int start_position);
 
   // End position of this function in the script source.
   inline int end_position();
   inline void set_end_position(int end_position);
 
   // Is this function a function expression in the source code.
-  inline bool is_expression();
-  inline void set_is_expression(bool value);
+  DECL_BOOLEAN_ACCESSORS(is_expression)
 
   // Is this function a top-level function (scripts, evals).
-  inline bool is_toplevel();
-  inline void set_is_toplevel(bool value);
+  DECL_BOOLEAN_ACCESSORS(is_toplevel)
 
   // Bit field containing various information collected by the compiler to
   // drive optimization.
   inline int compiler_hints();
   inline void set_compiler_hints(int value);
 
   // A counter used to determine when to stress the deoptimizer with a
   // deopt.
   inline Smi* deopt_counter();
   inline void set_deopt_counter(Smi* counter);
@@ skipping 35 matching lines @@
   // False if the function definitely does not allocate an arguments object.
   DECL_BOOLEAN_ACCESSORS(uses_arguments)
 
   // True if the function has any duplicated parameter names.
   DECL_BOOLEAN_ACCESSORS(has_duplicate_parameters)
 
   // Indicates whether the function is a native function.
   // These needs special threatment in .call and .apply since
   // null passed as the receiver should not be translated to the
   // global object.
-  inline bool native();
-  inline void set_native(bool value);
+  DECL_BOOLEAN_ACCESSORS(native)
+
+  // Indicates that the function was created by the Function function.
+  // Though it's anonymous, toString should treat it as if it had the name
+  // "anonymous".  We don't set the name itself so that the system does not
+  // see a binding for it.
+  DECL_BOOLEAN_ACCESSORS(name_should_print_as_anonymous)
 
   // Indicates whether the function is a bound function created using
   // the bind function.
-  inline bool bound();
-  inline void set_bound(bool value);
+  DECL_BOOLEAN_ACCESSORS(bound)
+
+  // Indicates that the function is anonymous (the name field can be set
+  // through the API, which does not change this flag).
+  DECL_BOOLEAN_ACCESSORS(is_anonymous)
 
   // Indicates whether or not the code in the shared function support
   // deoptimization.
   inline bool has_deoptimization_support();
 
   // Enable deoptimization support through recompiled code.
   void EnableDeoptimizationSupport(Code* recompiled);
 
   // Disable (further) attempted optimization of all functions sharing this
   // shared function info.  The function is the one we actually tried to
@@ skipping 161 matching lines @@
   // The source code start position is in the 30 most significant bits of
   // the start_position_and_type field.
   static const int kIsExpressionBit = 0;
   static const int kIsTopLevelBit   = 1;
   static const int kStartPositionShift = 2;
   static const int kStartPositionMask = ~((1 << kStartPositionShift) - 1);
 
   // Bit positions in compiler_hints.
   static const int kCodeAgeSize = 3;
   static const int kCodeAgeMask = (1 << kCodeAgeSize) - 1;
-  static const int kBoundFunction = 9;
 
   enum CompilerHints {
     kHasOnlySimpleThisPropertyAssignments,
     kAllowLazyCompilation,
     kLiveObjectsMayExist,
     kCodeAgeShift,
     kOptimizationDisabled = kCodeAgeShift + kCodeAgeSize,
     kStrictModeFunction,
     kUsesArguments,
     kHasDuplicateParameters,
-    kNative
+    kNative,
+    kBoundFunction,
+    kIsAnonymous,
+    kNameShouldPrintAsAnonymous,
+    kCompilerHintsCount  // Pseudo entry
   };
 
  private:
 #if V8_HOST_ARCH_32_BIT
   // On 32 bit platforms, compiler hints is a smi.
   static const int kCompilerHintsSmiTagSize = kSmiTagSize;
   static const int kCompilerHintsSize = kPointerSize;
 #else
   // On 64 bit platforms, compiler hints is not a smi, see comment above.
   static const int kCompilerHintsSmiTagSize = 0;
   static const int kCompilerHintsSize = kIntSize;
 #endif
 
+  STATIC_ASSERT(SharedFunctionInfo::kCompilerHintsCount <=
+                SharedFunctionInfo::kCompilerHintsSize * kBitsPerByte);
+
  public:
   // Constants for optimizing codegen for strict mode function and
   // native tests.
   // Allows to use byte-widgh instructions.
   static const int kStrictModeBitWithinByte =
       (kStrictModeFunction + kCompilerHintsSmiTagSize) % kBitsPerByte;
 
   static const int kNativeBitWithinByte =
       (kNative + kCompilerHintsSmiTagSize) % kBitsPerByte;
 
@@ skipping 1678 matching lines @@
 class JSFunctionProxy: public JSProxy {
  public:
   // Casting.
   static inline JSFunctionProxy* cast(Object* obj);
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(JSFunctionProxy);
 };
 
 
+// The JSWeakMap describes EcmaScript Harmony weak maps
+class JSWeakMap: public JSObject {
+ public:
+  // [table]: the backing hash table mapping keys to values.
+  DECL_ACCESSORS(table, ObjectHashTable)
+
+  // [next]: linked list of encountered weak maps during GC.
+  DECL_ACCESSORS(next, Object)
+
+  // Unchecked accessors to be used during GC.
+  inline ObjectHashTable* unchecked_table();
+
+  // Casting.
+  static inline JSWeakMap* cast(Object* obj);
+
+#ifdef OBJECT_PRINT
+  inline void JSWeakMapPrint() {
+    JSWeakMapPrint(stdout);
+  }
+  void JSWeakMapPrint(FILE* out);
+#endif
+#ifdef DEBUG
+  void JSWeakMapVerify();
+#endif
+
+  static const int kTableOffset = JSObject::kHeaderSize;
+  static const int kNextOffset = kTableOffset + kPointerSize;
+  static const int kSize = kNextOffset + kPointerSize;
+
+ private:
+  DISALLOW_IMPLICIT_CONSTRUCTORS(JSWeakMap);
+};
+
+
 // Foreign describes objects pointing from JavaScript to C structures.
 // Since they cannot contain references to JS HeapObjects they can be
 // placed in old_data_space.
 class Foreign: public HeapObject {
  public:
   // [address]: field containing the address.
   inline Address address();
   inline void set_address(Address value);
 
   // Casting.
@@ skipping 623 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_