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Unified Diff: src/objects.cc

Issue 4100005: Version 2.5.2 (Closed)
Patch Set: Created 10 years, 2 months ago
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Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index ac20b2e6f7842cc458243bca6e48dc09db8e2442..c1cb922de55bf831cad9deb8a5a83876d05b65ad 100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -54,16 +54,18 @@ const int kGetterIndex = 0;
const int kSetterIndex = 1;
-MUST_USE_RESULT static Object* CreateJSValue(JSFunction* constructor,
- Object* value) {
- Object* result = Heap::AllocateJSObject(constructor);
- if (result->IsFailure()) return result;
+MUST_USE_RESULT static MaybeObject* CreateJSValue(JSFunction* constructor,
+ Object* value) {
+ Object* result;
+ { MaybeObject* maybe_result = Heap::AllocateJSObject(constructor);
+ if (!maybe_result->ToObject(&result)) return maybe_result;
+ }
JSValue::cast(result)->set_value(value);
return result;
}
-Object* Object::ToObject(Context* global_context) {
+MaybeObject* Object::ToObject(Context* global_context) {
if (IsNumber()) {
return CreateJSValue(global_context->number_function(), this);
} else if (IsBoolean()) {
@@ -76,7 +78,7 @@ Object* Object::ToObject(Context* global_context) {
}
-Object* Object::ToObject() {
+MaybeObject* Object::ToObject() {
Context* global_context = Top::context()->global_context();
if (IsJSObject()) {
return this;
@@ -130,28 +132,28 @@ void Object::Lookup(String* name, LookupResult* result) {
}
-Object* Object::GetPropertyWithReceiver(Object* receiver,
- String* name,
- PropertyAttributes* attributes) {
+MaybeObject* Object::GetPropertyWithReceiver(Object* receiver,
+ String* name,
+ PropertyAttributes* attributes) {
LookupResult result;
Lookup(name, &result);
- Object* value = GetProperty(receiver, &result, name, attributes);
+ MaybeObject* value = GetProperty(receiver, &result, name, attributes);
ASSERT(*attributes <= ABSENT);
return value;
}
-Object* Object::GetPropertyWithCallback(Object* receiver,
- Object* structure,
- String* name,
- Object* holder) {
+MaybeObject* Object::GetPropertyWithCallback(Object* receiver,
+ Object* structure,
+ String* name,
+ Object* holder) {
// To accommodate both the old and the new api we switch on the
// data structure used to store the callbacks. Eventually proxy
// callbacks should be phased out.
if (structure->IsProxy()) {
AccessorDescriptor* callback =
reinterpret_cast<AccessorDescriptor*>(Proxy::cast(structure)->proxy());
- Object* value = (callback->getter)(receiver, callback->data);
+ MaybeObject* value = (callback->getter)(receiver, callback->data);
RETURN_IF_SCHEDULED_EXCEPTION();
return value;
}
@@ -195,8 +197,8 @@ Object* Object::GetPropertyWithCallback(Object* receiver,
}
-Object* Object::GetPropertyWithDefinedGetter(Object* receiver,
- JSFunction* getter) {
+MaybeObject* Object::GetPropertyWithDefinedGetter(Object* receiver,
+ JSFunction* getter) {
HandleScope scope;
Handle<JSFunction> fun(JSFunction::cast(getter));
Handle<Object> self(receiver);
@@ -216,7 +218,7 @@ Object* Object::GetPropertyWithDefinedGetter(Object* receiver,
// Only deal with CALLBACKS and INTERCEPTOR
-Object* JSObject::GetPropertyWithFailedAccessCheck(
+MaybeObject* JSObject::GetPropertyWithFailedAccessCheck(
Object* receiver,
LookupResult* result,
String* name,
@@ -365,19 +367,26 @@ Object* JSObject::SetNormalizedProperty(LookupResult* result, Object* value) {
}
-Object* JSObject::SetNormalizedProperty(String* name,
- Object* value,
- PropertyDetails details) {
+MaybeObject* JSObject::SetNormalizedProperty(String* name,
+ Object* value,
+ PropertyDetails details) {
ASSERT(!HasFastProperties());
int entry = property_dictionary()->FindEntry(name);
if (entry == StringDictionary::kNotFound) {
Object* store_value = value;
if (IsGlobalObject()) {
- store_value = Heap::AllocateJSGlobalPropertyCell(value);
- if (store_value->IsFailure()) return store_value;
+ { MaybeObject* maybe_store_value =
+ Heap::AllocateJSGlobalPropertyCell(value);
+ if (!maybe_store_value->ToObject(&store_value)) {
+ return maybe_store_value;
+ }
+ }
+ }
+ Object* dict;
+ { MaybeObject* maybe_dict =
+ property_dictionary()->Add(name, store_value, details);
+ if (!maybe_dict->ToObject(&dict)) return maybe_dict;
}
- Object* dict = property_dictionary()->Add(name, store_value, details);
- if (dict->IsFailure()) return dict;
set_properties(StringDictionary::cast(dict));
return value;
}
@@ -398,7 +407,7 @@ Object* JSObject::SetNormalizedProperty(String* name,
}
-Object* JSObject::DeleteNormalizedProperty(String* name, DeleteMode mode) {
+MaybeObject* JSObject::DeleteNormalizedProperty(String* name, DeleteMode mode) {
ASSERT(!HasFastProperties());
StringDictionary* dictionary = property_dictionary();
int entry = dictionary->FindEntry(name);
@@ -412,8 +421,10 @@ Object* JSObject::DeleteNormalizedProperty(String* name, DeleteMode mode) {
// map change to invalidate any ICs that think they can load
// from the DontDelete cell without checking if it contains
// the hole value.
- Object* new_map = map()->CopyDropDescriptors();
- if (new_map->IsFailure()) return new_map;
+ Object* new_map;
+ { MaybeObject* maybe_new_map = map()->CopyDropDescriptors();
+ if (!maybe_new_map->ToObject(&new_map)) return maybe_new_map;
+ }
set_map(Map::cast(new_map));
}
JSGlobalPropertyCell* cell =
@@ -443,10 +454,10 @@ bool JSObject::IsDirty() {
}
-Object* Object::GetProperty(Object* receiver,
- LookupResult* result,
- String* name,
- PropertyAttributes* attributes) {
+MaybeObject* Object::GetProperty(Object* receiver,
+ LookupResult* result,
+ String* name,
+ PropertyAttributes* attributes) {
// Make sure that the top context does not change when doing
// callbacks or interceptor calls.
AssertNoContextChange ncc;
@@ -512,7 +523,7 @@ Object* Object::GetProperty(Object* receiver,
}
-Object* Object::GetElementWithReceiver(Object* receiver, uint32_t index) {
+MaybeObject* Object::GetElementWithReceiver(Object* receiver, uint32_t index) {
// Non-JS objects do not have integer indexed properties.
if (!IsJSObject()) return Heap::undefined_value();
return JSObject::cast(this)->GetElementWithReceiver(JSObject::cast(receiver),
@@ -598,7 +609,7 @@ static bool AnWord(String* str) {
}
-Object* String::SlowTryFlatten(PretenureFlag pretenure) {
+MaybeObject* String::SlowTryFlatten(PretenureFlag pretenure) {
#ifdef DEBUG
// Do not attempt to flatten in debug mode when allocation is not
// allowed. This is to avoid an assertion failure when allocating.
@@ -621,8 +632,9 @@ Object* String::SlowTryFlatten(PretenureFlag pretenure) {
Object* object;
String* result;
if (IsAsciiRepresentation()) {
- object = Heap::AllocateRawAsciiString(len, tenure);
- if (object->IsFailure()) return object;
+ { MaybeObject* maybe_object = Heap::AllocateRawAsciiString(len, tenure);
+ if (!maybe_object->ToObject(&object)) return maybe_object;
+ }
result = String::cast(object);
String* first = cs->first();
int first_length = first->length();
@@ -634,8 +646,10 @@ Object* String::SlowTryFlatten(PretenureFlag pretenure) {
0,
len - first_length);
} else {
- object = Heap::AllocateRawTwoByteString(len, tenure);
- if (object->IsFailure()) return object;
+ { MaybeObject* maybe_object =
+ Heap::AllocateRawTwoByteString(len, tenure);
+ if (!maybe_object->ToObject(&object)) return maybe_object;
+ }
result = String::cast(object);
uc16* dest = SeqTwoByteString::cast(result)->GetChars();
String* first = cs->first();
@@ -1169,16 +1183,18 @@ String* JSObject::constructor_name() {
}
-Object* JSObject::AddFastPropertyUsingMap(Map* new_map,
- String* name,
- Object* value) {
+MaybeObject* JSObject::AddFastPropertyUsingMap(Map* new_map,
+ String* name,
+ Object* value) {
int index = new_map->PropertyIndexFor(name);
if (map()->unused_property_fields() == 0) {
ASSERT(map()->unused_property_fields() == 0);
int new_unused = new_map->unused_property_fields();
- Object* values =
- properties()->CopySize(properties()->length() + new_unused + 1);
- if (values->IsFailure()) return values;
+ Object* values;
+ { MaybeObject* maybe_values =
+ properties()->CopySize(properties()->length() + new_unused + 1);
+ if (!maybe_values->ToObject(&values)) return maybe_values;
+ }
set_properties(FixedArray::cast(values));
}
set_map(new_map);
@@ -1186,15 +1202,18 @@ Object* JSObject::AddFastPropertyUsingMap(Map* new_map,
}
-Object* JSObject::AddFastProperty(String* name,
- Object* value,
- PropertyAttributes attributes) {
+MaybeObject* JSObject::AddFastProperty(String* name,
+ Object* value,
+ PropertyAttributes attributes) {
// Normalize the object if the name is an actual string (not the
// hidden symbols) and is not a real identifier.
StringInputBuffer buffer(name);
if (!Scanner::IsIdentifier(&buffer) && name != Heap::hidden_symbol()) {
- Object* obj = NormalizeProperties(CLEAR_INOBJECT_PROPERTIES, 0);
- if (obj->IsFailure()) return obj;
+ Object* obj;
+ { MaybeObject* maybe_obj =
+ NormalizeProperties(CLEAR_INOBJECT_PROPERTIES, 0);
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
return AddSlowProperty(name, value, attributes);
}
@@ -1204,9 +1223,13 @@ Object* JSObject::AddFastProperty(String* name,
// Allocate new instance descriptors with (name, index) added
FieldDescriptor new_field(name, index, attributes);
- Object* new_descriptors =
- old_descriptors->CopyInsert(&new_field, REMOVE_TRANSITIONS);
- if (new_descriptors->IsFailure()) return new_descriptors;
+ Object* new_descriptors;
+ { MaybeObject* maybe_new_descriptors =
+ old_descriptors->CopyInsert(&new_field, REMOVE_TRANSITIONS);
+ if (!maybe_new_descriptors->ToObject(&new_descriptors)) {
+ return maybe_new_descriptors;
+ }
+ }
// Only allow map transition if the object's map is NOT equal to the
// global object_function's map and there is not a transition for name.
@@ -1218,27 +1241,36 @@ Object* JSObject::AddFastProperty(String* name,
(index - map()->inobject_properties()) < properties()->length() ||
map()->unused_property_fields() == 0);
// Allocate a new map for the object.
- Object* r = map()->CopyDropDescriptors();
- if (r->IsFailure()) return r;
+ Object* r;
+ { MaybeObject* maybe_r = map()->CopyDropDescriptors();
+ if (!maybe_r->ToObject(&r)) return maybe_r;
+ }
Map* new_map = Map::cast(r);
if (allow_map_transition) {
// Allocate new instance descriptors for the old map with map transition.
MapTransitionDescriptor d(name, Map::cast(new_map), attributes);
- Object* r = old_descriptors->CopyInsert(&d, KEEP_TRANSITIONS);
- if (r->IsFailure()) return r;
+ Object* r;
+ { MaybeObject* maybe_r = old_descriptors->CopyInsert(&d, KEEP_TRANSITIONS);
+ if (!maybe_r->ToObject(&r)) return maybe_r;
+ }
old_descriptors = DescriptorArray::cast(r);
}
if (map()->unused_property_fields() == 0) {
if (properties()->length() > MaxFastProperties()) {
- Object* obj = NormalizeProperties(CLEAR_INOBJECT_PROPERTIES, 0);
- if (obj->IsFailure()) return obj;
+ Object* obj;
+ { MaybeObject* maybe_obj =
+ NormalizeProperties(CLEAR_INOBJECT_PROPERTIES, 0);
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
return AddSlowProperty(name, value, attributes);
}
// Make room for the new value
- Object* values =
- properties()->CopySize(properties()->length() + kFieldsAdded);
- if (values->IsFailure()) return values;
+ Object* values;
+ { MaybeObject* maybe_values =
+ properties()->CopySize(properties()->length() + kFieldsAdded);
+ if (!maybe_values->ToObject(&values)) return maybe_values;
+ }
set_properties(FixedArray::cast(values));
new_map->set_unused_property_fields(kFieldsAdded - 1);
} else {
@@ -1253,20 +1285,27 @@ Object* JSObject::AddFastProperty(String* name,
}
-Object* JSObject::AddConstantFunctionProperty(String* name,
- JSFunction* function,
- PropertyAttributes attributes) {
+MaybeObject* JSObject::AddConstantFunctionProperty(
+ String* name,
+ JSFunction* function,
+ PropertyAttributes attributes) {
ASSERT(!Heap::InNewSpace(function));
// Allocate new instance descriptors with (name, function) added
ConstantFunctionDescriptor d(name, function, attributes);
- Object* new_descriptors =
- map()->instance_descriptors()->CopyInsert(&d, REMOVE_TRANSITIONS);
- if (new_descriptors->IsFailure()) return new_descriptors;
+ Object* new_descriptors;
+ { MaybeObject* maybe_new_descriptors =
+ map()->instance_descriptors()->CopyInsert(&d, REMOVE_TRANSITIONS);
+ if (!maybe_new_descriptors->ToObject(&new_descriptors)) {
+ return maybe_new_descriptors;
+ }
+ }
// Allocate a new map for the object.
- Object* new_map = map()->CopyDropDescriptors();
- if (new_map->IsFailure()) return new_map;
+ Object* new_map;
+ { MaybeObject* maybe_new_map = map()->CopyDropDescriptors();
+ if (!maybe_new_map->ToObject(&new_map)) return maybe_new_map;
+ }
DescriptorArray* descriptors = DescriptorArray::cast(new_descriptors);
Map::cast(new_map)->set_instance_descriptors(descriptors);
@@ -1292,10 +1331,12 @@ Object* JSObject::AddConstantFunctionProperty(String* name,
return function;
}
ConstTransitionDescriptor mark(name, Map::cast(new_map));
- new_descriptors =
- old_map->instance_descriptors()->CopyInsert(&mark, KEEP_TRANSITIONS);
- if (new_descriptors->IsFailure()) {
- return function; // We have accomplished the main goal, so return success.
+ { MaybeObject* maybe_new_descriptors =
+ old_map->instance_descriptors()->CopyInsert(&mark, KEEP_TRANSITIONS);
+ if (!maybe_new_descriptors->ToObject(&new_descriptors)) {
+ // We have accomplished the main goal, so return success.
+ return function;
+ }
}
old_map->set_instance_descriptors(DescriptorArray::cast(new_descriptors));
@@ -1304,9 +1345,9 @@ Object* JSObject::AddConstantFunctionProperty(String* name,
// Add property in slow mode
-Object* JSObject::AddSlowProperty(String* name,
- Object* value,
- PropertyAttributes attributes) {
+MaybeObject* JSObject::AddSlowProperty(String* name,
+ Object* value,
+ PropertyAttributes attributes) {
ASSERT(!HasFastProperties());
StringDictionary* dict = property_dictionary();
Object* store_value = value;
@@ -1324,21 +1365,25 @@ Object* JSObject::AddSlowProperty(String* name,
dict->SetEntry(entry, name, store_value, details);
return value;
}
- store_value = Heap::AllocateJSGlobalPropertyCell(value);
- if (store_value->IsFailure()) return store_value;
+ { MaybeObject* maybe_store_value =
+ Heap::AllocateJSGlobalPropertyCell(value);
+ if (!maybe_store_value->ToObject(&store_value)) return maybe_store_value;
+ }
JSGlobalPropertyCell::cast(store_value)->set_value(value);
}
PropertyDetails details = PropertyDetails(attributes, NORMAL);
- Object* result = dict->Add(name, store_value, details);
- if (result->IsFailure()) return result;
+ Object* result;
+ { MaybeObject* maybe_result = dict->Add(name, store_value, details);
+ if (!maybe_result->ToObject(&result)) return maybe_result;
+ }
if (dict != result) set_properties(StringDictionary::cast(result));
return value;
}
-Object* JSObject::AddProperty(String* name,
- Object* value,
- PropertyAttributes attributes) {
+MaybeObject* JSObject::AddProperty(String* name,
+ Object* value,
+ PropertyAttributes attributes) {
ASSERT(!IsJSGlobalProxy());
if (!map()->is_extensible()) {
Handle<Object> args[1] = {Handle<String>(name)};
@@ -1359,17 +1404,21 @@ Object* JSObject::AddProperty(String* name,
} else {
// Normalize the object to prevent very large instance descriptors.
// This eliminates unwanted N^2 allocation and lookup behavior.
- Object* obj = NormalizeProperties(CLEAR_INOBJECT_PROPERTIES, 0);
- if (obj->IsFailure()) return obj;
+ Object* obj;
+ { MaybeObject* maybe_obj =
+ NormalizeProperties(CLEAR_INOBJECT_PROPERTIES, 0);
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
}
}
return AddSlowProperty(name, value, attributes);
}
-Object* JSObject::SetPropertyPostInterceptor(String* name,
- Object* value,
- PropertyAttributes attributes) {
+MaybeObject* JSObject::SetPropertyPostInterceptor(
+ String* name,
+ Object* value,
+ PropertyAttributes attributes) {
// Check local property, ignore interceptor.
LookupResult result;
LocalLookupRealNamedProperty(name, &result);
@@ -1383,9 +1432,9 @@ Object* JSObject::SetPropertyPostInterceptor(String* name,
}
-Object* JSObject::ReplaceSlowProperty(String* name,
- Object* value,
- PropertyAttributes attributes) {
+MaybeObject* JSObject::ReplaceSlowProperty(String* name,
+ Object* value,
+ PropertyAttributes attributes) {
StringDictionary* dictionary = property_dictionary();
int old_index = dictionary->FindEntry(name);
int new_enumeration_index = 0; // 0 means "Use the next available index."
@@ -1400,13 +1449,16 @@ Object* JSObject::ReplaceSlowProperty(String* name,
}
-Object* JSObject::ConvertDescriptorToFieldAndMapTransition(
+MaybeObject* JSObject::ConvertDescriptorToFieldAndMapTransition(
String* name,
Object* new_value,
PropertyAttributes attributes) {
Map* old_map = map();
- Object* result = ConvertDescriptorToField(name, new_value, attributes);
- if (result->IsFailure()) return result;
+ Object* result;
+ { MaybeObject* maybe_result =
+ ConvertDescriptorToField(name, new_value, attributes);
+ if (!maybe_result->ToObject(&result)) return maybe_result;
+ }
// If we get to this point we have succeeded - do not return failure
// after this point. Later stuff is optional.
if (!HasFastProperties()) {
@@ -1420,37 +1472,51 @@ Object* JSObject::ConvertDescriptorToFieldAndMapTransition(
MapTransitionDescriptor transition(name,
map(),
attributes);
- Object* new_descriptors =
- old_map->instance_descriptors()->
- CopyInsert(&transition, KEEP_TRANSITIONS);
- if (new_descriptors->IsFailure()) return result; // Yes, return _result_.
+ Object* new_descriptors;
+ { MaybeObject* maybe_new_descriptors = old_map->instance_descriptors()->
+ CopyInsert(&transition, KEEP_TRANSITIONS);
+ if (!maybe_new_descriptors->ToObject(&new_descriptors)) {
+ return result; // Yes, return _result_.
+ }
+ }
old_map->set_instance_descriptors(DescriptorArray::cast(new_descriptors));
return result;
}
-Object* JSObject::ConvertDescriptorToField(String* name,
- Object* new_value,
- PropertyAttributes attributes) {
+MaybeObject* JSObject::ConvertDescriptorToField(String* name,
+ Object* new_value,
+ PropertyAttributes attributes) {
if (map()->unused_property_fields() == 0 &&
properties()->length() > MaxFastProperties()) {
- Object* obj = NormalizeProperties(CLEAR_INOBJECT_PROPERTIES, 0);
- if (obj->IsFailure()) return obj;
+ Object* obj;
+ { MaybeObject* maybe_obj =
+ NormalizeProperties(CLEAR_INOBJECT_PROPERTIES, 0);
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
return ReplaceSlowProperty(name, new_value, attributes);
}
int index = map()->NextFreePropertyIndex();
FieldDescriptor new_field(name, index, attributes);
// Make a new DescriptorArray replacing an entry with FieldDescriptor.
- Object* descriptors_unchecked = map()->instance_descriptors()->
- CopyInsert(&new_field, REMOVE_TRANSITIONS);
- if (descriptors_unchecked->IsFailure()) return descriptors_unchecked;
+ Object* descriptors_unchecked;
+ { MaybeObject* maybe_descriptors_unchecked = map()->instance_descriptors()->
+ CopyInsert(&new_field, REMOVE_TRANSITIONS);
+ if (!maybe_descriptors_unchecked->ToObject(&descriptors_unchecked)) {
+ return maybe_descriptors_unchecked;
+ }
+ }
DescriptorArray* new_descriptors =
DescriptorArray::cast(descriptors_unchecked);
// Make a new map for the object.
- Object* new_map_unchecked = map()->CopyDropDescriptors();
- if (new_map_unchecked->IsFailure()) return new_map_unchecked;
+ Object* new_map_unchecked;
+ { MaybeObject* maybe_new_map_unchecked = map()->CopyDropDescriptors();
+ if (!maybe_new_map_unchecked->ToObject(&new_map_unchecked)) {
+ return maybe_new_map_unchecked;
+ }
+ }
Map* new_map = Map::cast(new_map_unchecked);
new_map->set_instance_descriptors(new_descriptors);
@@ -1459,10 +1525,14 @@ Object* JSObject::ConvertDescriptorToField(String* name,
int new_unused_property_fields = map()->unused_property_fields() - 1;
if (map()->unused_property_fields() == 0) {
new_unused_property_fields = kFieldsAdded - 1;
- Object* new_properties_unchecked =
- properties()->CopySize(properties()->length() + kFieldsAdded);
- if (new_properties_unchecked->IsFailure()) return new_properties_unchecked;
- new_properties = FixedArray::cast(new_properties_unchecked);
+ Object* new_properties_object;
+ { MaybeObject* maybe_new_properties_object =
+ properties()->CopySize(properties()->length() + kFieldsAdded);
+ if (!maybe_new_properties_object->ToObject(&new_properties_object)) {
+ return maybe_new_properties_object;
+ }
+ }
+ new_properties = FixedArray::cast(new_properties_object);
}
// Update pointers to commit changes.
@@ -1477,9 +1547,10 @@ Object* JSObject::ConvertDescriptorToField(String* name,
-Object* JSObject::SetPropertyWithInterceptor(String* name,
- Object* value,
- PropertyAttributes attributes) {
+MaybeObject* JSObject::SetPropertyWithInterceptor(
+ String* name,
+ Object* value,
+ PropertyAttributes attributes) {
HandleScope scope;
Handle<JSObject> this_handle(this);
Handle<String> name_handle(name);
@@ -1505,27 +1576,28 @@ Object* JSObject::SetPropertyWithInterceptor(String* name,
RETURN_IF_SCHEDULED_EXCEPTION();
if (!result.IsEmpty()) return *value_handle;
}
- Object* raw_result = this_handle->SetPropertyPostInterceptor(*name_handle,
- *value_handle,
- attributes);
+ MaybeObject* raw_result =
+ this_handle->SetPropertyPostInterceptor(*name_handle,
+ *value_handle,
+ attributes);
RETURN_IF_SCHEDULED_EXCEPTION();
return raw_result;
}
-Object* JSObject::SetProperty(String* name,
- Object* value,
- PropertyAttributes attributes) {
+MaybeObject* JSObject::SetProperty(String* name,
+ Object* value,
+ PropertyAttributes attributes) {
LookupResult result;
LocalLookup(name, &result);
return SetProperty(&result, name, value, attributes);
}
-Object* JSObject::SetPropertyWithCallback(Object* structure,
- String* name,
- Object* value,
- JSObject* holder) {
+MaybeObject* JSObject::SetPropertyWithCallback(Object* structure,
+ String* name,
+ Object* value,
+ JSObject* holder) {
HandleScope scope;
// We should never get here to initialize a const with the hole
@@ -1539,7 +1611,7 @@ Object* JSObject::SetPropertyWithCallback(Object* structure,
if (structure->IsProxy()) {
AccessorDescriptor* callback =
reinterpret_cast<AccessorDescriptor*>(Proxy::cast(structure)->proxy());
- Object* obj = (callback->setter)(this, value, callback->data);
+ MaybeObject* obj = (callback->setter)(this, value, callback->data);
RETURN_IF_SCHEDULED_EXCEPTION();
if (obj->IsFailure()) return obj;
return *value_handle;
@@ -1584,8 +1656,8 @@ Object* JSObject::SetPropertyWithCallback(Object* structure,
}
-Object* JSObject::SetPropertyWithDefinedSetter(JSFunction* setter,
- Object* value) {
+MaybeObject* JSObject::SetPropertyWithDefinedSetter(JSFunction* setter,
+ Object* value) {
Handle<Object> value_handle(value);
Handle<JSFunction> fun(JSFunction::cast(setter));
Handle<JSObject> self(this);
@@ -1727,9 +1799,9 @@ void JSObject::LookupRealNamedPropertyInPrototypes(String* name,
// We only need to deal with CALLBACKS and INTERCEPTORS
-Object* JSObject::SetPropertyWithFailedAccessCheck(LookupResult* result,
- String* name,
- Object* value) {
+MaybeObject* JSObject::SetPropertyWithFailedAccessCheck(LookupResult* result,
+ String* name,
+ Object* value) {
if (!result->IsProperty()) {
LookupCallbackSetterInPrototypes(name, result);
}
@@ -1774,10 +1846,10 @@ Object* JSObject::SetPropertyWithFailedAccessCheck(LookupResult* result,
}
-Object* JSObject::SetProperty(LookupResult* result,
- String* name,
- Object* value,
- PropertyAttributes attributes) {
+MaybeObject* JSObject::SetProperty(LookupResult* result,
+ String* name,
+ Object* value,
+ PropertyAttributes attributes) {
// Make sure that the top context does not change when doing callbacks or
// interceptor calls.
AssertNoContextChange ncc;
@@ -1786,8 +1858,12 @@ Object* JSObject::SetProperty(LookupResult* result,
// dictionary. We make these short keys into symbols to avoid constantly
// reallocating them.
if (!name->IsSymbol() && name->length() <= 2) {
- Object* symbol_version = Heap::LookupSymbol(name);
- if (!symbol_version->IsFailure()) name = String::cast(symbol_version);
+ Object* symbol_version;
+ { MaybeObject* maybe_symbol_version = Heap::LookupSymbol(name);
+ if (maybe_symbol_version->ToObject(&symbol_version)) {
+ name = String::cast(symbol_version);
+ }
+ }
}
// Check access rights if needed.
@@ -1883,7 +1959,7 @@ Object* JSObject::SetProperty(LookupResult* result,
// callback setter removed. The two lines looking up the LookupResult
// result are also added. If one of the functions is changed, the other
// should be.
-Object* JSObject::IgnoreAttributesAndSetLocalProperty(
+MaybeObject* JSObject::IgnoreAttributesAndSetLocalProperty(
String* name,
Object* value,
PropertyAttributes attributes) {
@@ -2081,7 +2157,8 @@ PropertyAttributes JSObject::GetLocalPropertyAttribute(String* name) {
}
-Object* NormalizedMapCache::Get(JSObject* obj, PropertyNormalizationMode mode) {
+MaybeObject* NormalizedMapCache::Get(JSObject* obj,
+ PropertyNormalizationMode mode) {
Map* fast = obj->map();
int index = Hash(fast) % kEntries;
Object* result = get(index);
@@ -2089,19 +2166,24 @@ Object* NormalizedMapCache::Get(JSObject* obj, PropertyNormalizationMode mode) {
#ifdef DEBUG
if (FLAG_enable_slow_asserts) {
// The cached map should match newly created normalized map bit-by-bit.
- Object* fresh = fast->CopyNormalized(mode, SHARED_NORMALIZED_MAP);
- if (!fresh->IsFailure()) {
- ASSERT(memcmp(Map::cast(fresh)->address(),
- Map::cast(result)->address(),
- Map::kSize) == 0);
+ Object* fresh;
+ { MaybeObject* maybe_fresh =
+ fast->CopyNormalized(mode, SHARED_NORMALIZED_MAP);
+ if (maybe_fresh->ToObject(&fresh)) {
+ ASSERT(memcmp(Map::cast(fresh)->address(),
+ Map::cast(result)->address(),
+ Map::kSize) == 0);
+ }
}
}
#endif
return result;
}
- result = fast->CopyNormalized(mode, SHARED_NORMALIZED_MAP);
- if (result->IsFailure()) return result;
+ { MaybeObject* maybe_result =
+ fast->CopyNormalized(mode, SHARED_NORMALIZED_MAP);
+ if (!maybe_result->ToObject(&result)) return maybe_result;
+ }
set(index, result);
Counters::normalized_maps.Increment();
@@ -2153,14 +2235,16 @@ bool NormalizedMapCache::CheckHit(Map* slow,
}
-Object* JSObject::UpdateMapCodeCache(String* name, Code* code) {
+MaybeObject* JSObject::UpdateMapCodeCache(String* name, Code* code) {
if (map()->is_shared()) {
// Fast case maps are never marked as shared.
ASSERT(!HasFastProperties());
// Replace the map with an identical copy that can be safely modified.
- Object* obj = map()->CopyNormalized(KEEP_INOBJECT_PROPERTIES,
- UNIQUE_NORMALIZED_MAP);
- if (obj->IsFailure()) return obj;
+ Object* obj;
+ { MaybeObject* maybe_obj = map()->CopyNormalized(KEEP_INOBJECT_PROPERTIES,
+ UNIQUE_NORMALIZED_MAP);
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
Counters::normalized_maps.Increment();
set_map(Map::cast(obj));
@@ -2169,8 +2253,8 @@ Object* JSObject::UpdateMapCodeCache(String* name, Code* code) {
}
-Object* JSObject::NormalizeProperties(PropertyNormalizationMode mode,
- int expected_additional_properties) {
+MaybeObject* JSObject::NormalizeProperties(PropertyNormalizationMode mode,
+ int expected_additional_properties) {
if (!HasFastProperties()) return this;
// The global object is always normalized.
@@ -2183,9 +2267,11 @@ Object* JSObject::NormalizeProperties(PropertyNormalizationMode mode,
} else {
property_count += 2; // Make space for two more properties.
}
- Object* obj =
- StringDictionary::Allocate(property_count);
- if (obj->IsFailure()) return obj;
+ Object* obj;
+ { MaybeObject* maybe_obj =
+ StringDictionary::Allocate(property_count);
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
StringDictionary* dictionary = StringDictionary::cast(obj);
DescriptorArray* descs = map()->instance_descriptors();
@@ -2196,8 +2282,11 @@ Object* JSObject::NormalizeProperties(PropertyNormalizationMode mode,
PropertyDetails d =
PropertyDetails(details.attributes(), NORMAL, details.index());
Object* value = descs->GetConstantFunction(i);
- Object* result = dictionary->Add(descs->GetKey(i), value, d);
- if (result->IsFailure()) return result;
+ Object* result;
+ { MaybeObject* maybe_result =
+ dictionary->Add(descs->GetKey(i), value, d);
+ if (!maybe_result->ToObject(&result)) return maybe_result;
+ }
dictionary = StringDictionary::cast(result);
break;
}
@@ -2205,8 +2294,11 @@ Object* JSObject::NormalizeProperties(PropertyNormalizationMode mode,
PropertyDetails d =
PropertyDetails(details.attributes(), NORMAL, details.index());
Object* value = FastPropertyAt(descs->GetFieldIndex(i));
- Object* result = dictionary->Add(descs->GetKey(i), value, d);
- if (result->IsFailure()) return result;
+ Object* result;
+ { MaybeObject* maybe_result =
+ dictionary->Add(descs->GetKey(i), value, d);
+ if (!maybe_result->ToObject(&result)) return maybe_result;
+ }
dictionary = StringDictionary::cast(result);
break;
}
@@ -2214,8 +2306,11 @@ Object* JSObject::NormalizeProperties(PropertyNormalizationMode mode,
PropertyDetails d =
PropertyDetails(details.attributes(), CALLBACKS, details.index());
Object* value = descs->GetCallbacksObject(i);
- Object* result = dictionary->Add(descs->GetKey(i), value, d);
- if (result->IsFailure()) return result;
+ Object* result;
+ { MaybeObject* maybe_result =
+ dictionary->Add(descs->GetKey(i), value, d);
+ if (!maybe_result->ToObject(&result)) return maybe_result;
+ }
dictionary = StringDictionary::cast(result);
break;
}
@@ -2233,9 +2328,10 @@ Object* JSObject::NormalizeProperties(PropertyNormalizationMode mode,
int index = map()->instance_descriptors()->NextEnumerationIndex();
dictionary->SetNextEnumerationIndex(index);
- obj = Top::context()->global_context()->
- normalized_map_cache()->Get(this, mode);
- if (obj->IsFailure()) return obj;
+ { MaybeObject* maybe_obj = Top::context()->global_context()->
+ normalized_map_cache()->Get(this, mode);
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
Map* new_map = Map::cast(obj);
// We have now successfully allocated all the necessary objects.
@@ -2264,7 +2360,7 @@ Object* JSObject::NormalizeProperties(PropertyNormalizationMode mode,
}
-Object* JSObject::TransformToFastProperties(int unused_property_fields) {
+MaybeObject* JSObject::TransformToFastProperties(int unused_property_fields) {
if (HasFastProperties()) return this;
ASSERT(!IsGlobalObject());
return property_dictionary()->
@@ -2272,13 +2368,15 @@ Object* JSObject::TransformToFastProperties(int unused_property_fields) {
}
-Object* JSObject::NormalizeElements() {
+MaybeObject* JSObject::NormalizeElements() {
ASSERT(!HasPixelElements() && !HasExternalArrayElements());
if (HasDictionaryElements()) return this;
ASSERT(map()->has_fast_elements());
- Object* obj = map()->GetSlowElementsMap();
- if (obj->IsFailure()) return obj;
+ Object* obj;
+ { MaybeObject* maybe_obj = map()->GetSlowElementsMap();
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
Map* new_map = Map::cast(obj);
// Get number of entries.
@@ -2288,16 +2386,20 @@ Object* JSObject::NormalizeElements() {
int length = IsJSArray() ?
Smi::cast(JSArray::cast(this)->length())->value() :
array->length();
- obj = NumberDictionary::Allocate(length);
- if (obj->IsFailure()) return obj;
+ { MaybeObject* maybe_obj = NumberDictionary::Allocate(length);
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
NumberDictionary* dictionary = NumberDictionary::cast(obj);
// Copy entries.
for (int i = 0; i < length; i++) {
Object* value = array->get(i);
if (!value->IsTheHole()) {
PropertyDetails details = PropertyDetails(NONE, NORMAL);
- Object* result = dictionary->AddNumberEntry(i, array->get(i), details);
- if (result->IsFailure()) return result;
+ Object* result;
+ { MaybeObject* maybe_result =
+ dictionary->AddNumberEntry(i, array->get(i), details);
+ if (!maybe_result->ToObject(&result)) return maybe_result;
+ }
dictionary = NumberDictionary::cast(result);
}
}
@@ -2320,21 +2422,24 @@ Object* JSObject::NormalizeElements() {
}
-Object* JSObject::DeletePropertyPostInterceptor(String* name, DeleteMode mode) {
+MaybeObject* JSObject::DeletePropertyPostInterceptor(String* name,
+ DeleteMode mode) {
// Check local property, ignore interceptor.
LookupResult result;
LocalLookupRealNamedProperty(name, &result);
if (!result.IsProperty()) return Heap::true_value();
// Normalize object if needed.
- Object* obj = NormalizeProperties(CLEAR_INOBJECT_PROPERTIES, 0);
- if (obj->IsFailure()) return obj;
+ Object* obj;
+ { MaybeObject* maybe_obj = NormalizeProperties(CLEAR_INOBJECT_PROPERTIES, 0);
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
return DeleteNormalizedProperty(name, mode);
}
-Object* JSObject::DeletePropertyWithInterceptor(String* name) {
+MaybeObject* JSObject::DeletePropertyWithInterceptor(String* name) {
HandleScope scope;
Handle<InterceptorInfo> interceptor(GetNamedInterceptor());
Handle<String> name_handle(name);
@@ -2357,20 +2462,22 @@ Object* JSObject::DeletePropertyWithInterceptor(String* name) {
return *v8::Utils::OpenHandle(*result);
}
}
- Object* raw_result =
+ MaybeObject* raw_result =
this_handle->DeletePropertyPostInterceptor(*name_handle, NORMAL_DELETION);
RETURN_IF_SCHEDULED_EXCEPTION();
return raw_result;
}
-Object* JSObject::DeleteElementPostInterceptor(uint32_t index,
- DeleteMode mode) {
+MaybeObject* JSObject::DeleteElementPostInterceptor(uint32_t index,
+ DeleteMode mode) {
ASSERT(!HasPixelElements() && !HasExternalArrayElements());
switch (GetElementsKind()) {
case FAST_ELEMENTS: {
- Object* obj = EnsureWritableFastElements();
- if (obj->IsFailure()) return obj;
+ Object* obj;
+ { MaybeObject* maybe_obj = EnsureWritableFastElements();
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
uint32_t length = IsJSArray() ?
static_cast<uint32_t>(Smi::cast(JSArray::cast(this)->length())->value()) :
static_cast<uint32_t>(FixedArray::cast(elements())->length());
@@ -2395,7 +2502,7 @@ Object* JSObject::DeleteElementPostInterceptor(uint32_t index,
}
-Object* JSObject::DeleteElementWithInterceptor(uint32_t index) {
+MaybeObject* JSObject::DeleteElementWithInterceptor(uint32_t index) {
// Make sure that the top context does not change when doing
// callbacks or interceptor calls.
AssertNoContextChange ncc;
@@ -2419,14 +2526,14 @@ Object* JSObject::DeleteElementWithInterceptor(uint32_t index) {
ASSERT(result->IsBoolean());
return *v8::Utils::OpenHandle(*result);
}
- Object* raw_result =
+ MaybeObject* raw_result =
this_handle->DeleteElementPostInterceptor(index, NORMAL_DELETION);
RETURN_IF_SCHEDULED_EXCEPTION();
return raw_result;
}
-Object* JSObject::DeleteElement(uint32_t index, DeleteMode mode) {
+MaybeObject* JSObject::DeleteElement(uint32_t index, DeleteMode mode) {
// Check access rights if needed.
if (IsAccessCheckNeeded() &&
!Top::MayIndexedAccess(this, index, v8::ACCESS_DELETE)) {
@@ -2451,8 +2558,10 @@ Object* JSObject::DeleteElement(uint32_t index, DeleteMode mode) {
switch (GetElementsKind()) {
case FAST_ELEMENTS: {
- Object* obj = EnsureWritableFastElements();
- if (obj->IsFailure()) return obj;
+ Object* obj;
+ { MaybeObject* maybe_obj = EnsureWritableFastElements();
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
uint32_t length = IsJSArray() ?
static_cast<uint32_t>(Smi::cast(JSArray::cast(this)->length())->value()) :
static_cast<uint32_t>(FixedArray::cast(elements())->length());
@@ -2488,7 +2597,7 @@ Object* JSObject::DeleteElement(uint32_t index, DeleteMode mode) {
}
-Object* JSObject::DeleteProperty(String* name, DeleteMode mode) {
+MaybeObject* JSObject::DeleteProperty(String* name, DeleteMode mode) {
// ECMA-262, 3rd, 8.6.2.5
ASSERT(name->IsString());
@@ -2526,8 +2635,11 @@ Object* JSObject::DeleteProperty(String* name, DeleteMode mode) {
return DeletePropertyWithInterceptor(name);
}
// Normalize object if needed.
- Object* obj = NormalizeProperties(CLEAR_INOBJECT_PROPERTIES, 0);
- if (obj->IsFailure()) return obj;
+ Object* obj;
+ { MaybeObject* maybe_obj =
+ NormalizeProperties(CLEAR_INOBJECT_PROPERTIES, 0);
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
// Make sure the properties are normalized before removing the entry.
return DeleteNormalizedProperty(name, mode);
}
@@ -2633,19 +2745,23 @@ bool JSObject::ReferencesObject(Object* obj) {
}
-Object* JSObject::PreventExtensions() {
+MaybeObject* JSObject::PreventExtensions() {
// If there are fast elements we normalize.
if (HasFastElements()) {
- Object* ok = NormalizeElements();
- if (ok->IsFailure()) return ok;
+ Object* ok;
+ { MaybeObject* maybe_ok = NormalizeElements();
+ if (!maybe_ok->ToObject(&ok)) return maybe_ok;
+ }
}
// Make sure that we never go back to fast case.
element_dictionary()->set_requires_slow_elements();
// Do a map transition, other objects with this map may still
// be extensible.
- Object* new_map = map()->CopyDropTransitions();
- if (new_map->IsFailure()) return new_map;
+ Object* new_map;
+ { MaybeObject* maybe_new_map = map()->CopyDropTransitions();
+ if (!maybe_new_map->ToObject(&new_map)) return maybe_new_map;
+ }
Map::cast(new_map)->set_is_extensible(false);
set_map(Map::cast(new_map));
ASSERT(!map()->is_extensible());
@@ -2779,8 +2895,8 @@ void JSObject::LookupCallback(String* name, LookupResult* result) {
}
-Object* JSObject::DefineGetterSetter(String* name,
- PropertyAttributes attributes) {
+MaybeObject* JSObject::DefineGetterSetter(String* name,
+ PropertyAttributes attributes) {
// Make sure that the top context does not change when doing callbacks or
// interceptor calls.
AssertNoContextChange ncc;
@@ -2850,8 +2966,10 @@ Object* JSObject::DefineGetterSetter(String* name,
}
// Allocate the fixed array to hold getter and setter.
- Object* structure = Heap::AllocateFixedArray(2, TENURED);
- if (structure->IsFailure()) return structure;
+ Object* structure;
+ { MaybeObject* maybe_structure = Heap::AllocateFixedArray(2, TENURED);
+ if (!maybe_structure->ToObject(&structure)) return maybe_structure;
+ }
if (is_element) {
return SetElementCallback(index, structure, attributes);
@@ -2885,19 +3003,23 @@ bool JSObject::CanSetCallback(String* name) {
}
-Object* JSObject::SetElementCallback(uint32_t index,
- Object* structure,
- PropertyAttributes attributes) {
+MaybeObject* JSObject::SetElementCallback(uint32_t index,
+ Object* structure,
+ PropertyAttributes attributes) {
PropertyDetails details = PropertyDetails(attributes, CALLBACKS);
// Normalize elements to make this operation simple.
- Object* ok = NormalizeElements();
- if (ok->IsFailure()) return ok;
+ Object* ok;
+ { MaybeObject* maybe_ok = NormalizeElements();
+ if (!maybe_ok->ToObject(&ok)) return maybe_ok;
+ }
// Update the dictionary with the new CALLBACKS property.
- Object* dict =
- element_dictionary()->Set(index, structure, details);
- if (dict->IsFailure()) return dict;
+ Object* dict;
+ { MaybeObject* maybe_dict =
+ element_dictionary()->Set(index, structure, details);
+ if (!maybe_dict->ToObject(&dict)) return maybe_dict;
+ }
NumberDictionary* elements = NumberDictionary::cast(dict);
elements->set_requires_slow_elements();
@@ -2908,9 +3030,9 @@ Object* JSObject::SetElementCallback(uint32_t index,
}
-Object* JSObject::SetPropertyCallback(String* name,
- Object* structure,
- PropertyAttributes attributes) {
+MaybeObject* JSObject::SetPropertyCallback(String* name,
+ Object* structure,
+ PropertyAttributes attributes) {
PropertyDetails details = PropertyDetails(attributes, CALLBACKS);
bool convert_back_to_fast = HasFastProperties() &&
@@ -2918,30 +3040,39 @@ Object* JSObject::SetPropertyCallback(String* name,
< DescriptorArray::kMaxNumberOfDescriptors);
// Normalize object to make this operation simple.
- Object* ok = NormalizeProperties(CLEAR_INOBJECT_PROPERTIES, 0);
- if (ok->IsFailure()) return ok;
+ Object* ok;
+ { MaybeObject* maybe_ok = NormalizeProperties(CLEAR_INOBJECT_PROPERTIES, 0);
+ if (!maybe_ok->ToObject(&ok)) return maybe_ok;
+ }
// For the global object allocate a new map to invalidate the global inline
// caches which have a global property cell reference directly in the code.
if (IsGlobalObject()) {
- Object* new_map = map()->CopyDropDescriptors();
- if (new_map->IsFailure()) return new_map;
+ Object* new_map;
+ { MaybeObject* maybe_new_map = map()->CopyDropDescriptors();
+ if (!maybe_new_map->ToObject(&new_map)) return maybe_new_map;
+ }
set_map(Map::cast(new_map));
}
// Update the dictionary with the new CALLBACKS property.
- Object* result = SetNormalizedProperty(name, structure, details);
- if (result->IsFailure()) return result;
+ Object* result;
+ { MaybeObject* maybe_result = SetNormalizedProperty(name, structure, details);
+ if (!maybe_result->ToObject(&result)) return maybe_result;
+ }
if (convert_back_to_fast) {
- ok = TransformToFastProperties(0);
- if (ok->IsFailure()) return ok;
+ { MaybeObject* maybe_ok = TransformToFastProperties(0);
+ if (!maybe_ok->ToObject(&ok)) return maybe_ok;
+ }
}
return result;
}
-Object* JSObject::DefineAccessor(String* name, bool is_getter, JSFunction* fun,
- PropertyAttributes attributes) {
+MaybeObject* JSObject::DefineAccessor(String* name,
+ bool is_getter,
+ JSFunction* fun,
+ PropertyAttributes attributes) {
// Check access rights if needed.
if (IsAccessCheckNeeded() &&
!Top::MayNamedAccess(this, name, v8::ACCESS_SET)) {
@@ -2957,14 +3088,17 @@ Object* JSObject::DefineAccessor(String* name, bool is_getter, JSFunction* fun,
fun, attributes);
}
- Object* array = DefineGetterSetter(name, attributes);
- if (array->IsFailure() || array->IsUndefined()) return array;
+ Object* array;
+ { MaybeObject* maybe_array = DefineGetterSetter(name, attributes);
+ if (!maybe_array->ToObject(&array)) return maybe_array;
+ }
+ if (array->IsUndefined()) return array;
FixedArray::cast(array)->set(is_getter ? 0 : 1, fun);
return this;
}
-Object* JSObject::DefineAccessor(AccessorInfo* info) {
+MaybeObject* JSObject::DefineAccessor(AccessorInfo* info) {
String* name = String::cast(info->name());
// Check access rights if needed.
if (IsAccessCheckNeeded() &&
@@ -3019,8 +3153,11 @@ Object* JSObject::DefineAccessor(AccessorInfo* info) {
break;
}
- Object* ok = SetElementCallback(index, info, info->property_attributes());
- if (ok->IsFailure()) return ok;
+ Object* ok;
+ { MaybeObject* maybe_ok =
+ SetElementCallback(index, info, info->property_attributes());
+ if (!maybe_ok->ToObject(&ok)) return maybe_ok;
+ }
} else {
// Lookup the name.
LookupResult result;
@@ -3030,8 +3167,11 @@ Object* JSObject::DefineAccessor(AccessorInfo* info) {
if (result.IsProperty() && (result.IsReadOnly() || result.IsDontDelete())) {
return Heap::undefined_value();
}
- Object* ok = SetPropertyCallback(name, info, info->property_attributes());
- if (ok->IsFailure()) return ok;
+ Object* ok;
+ { MaybeObject* maybe_ok =
+ SetPropertyCallback(name, info, info->property_attributes());
+ if (!maybe_ok->ToObject(&ok)) return maybe_ok;
+ }
}
return this;
@@ -3114,9 +3254,12 @@ Object* JSObject::SlowReverseLookup(Object* value) {
}
-Object* Map::CopyDropDescriptors() {
- Object* result = Heap::AllocateMap(instance_type(), instance_size());
- if (result->IsFailure()) return result;
+MaybeObject* Map::CopyDropDescriptors() {
+ Object* result;
+ { MaybeObject* maybe_result =
+ Heap::AllocateMap(instance_type(), instance_size());
+ if (!maybe_result->ToObject(&result)) return maybe_result;
+ }
Map::cast(result)->set_prototype(prototype());
Map::cast(result)->set_constructor(constructor());
// Don't copy descriptors, so map transitions always remain a forest.
@@ -3134,9 +3277,11 @@ Object* Map::CopyDropDescriptors() {
if (pre_allocated_property_fields() > 0) {
ASSERT(constructor()->IsJSFunction());
JSFunction* ctor = JSFunction::cast(constructor());
- Object* descriptors =
- ctor->initial_map()->instance_descriptors()->RemoveTransitions();
- if (descriptors->IsFailure()) return descriptors;
+ Object* descriptors;
+ { MaybeObject* maybe_descriptors =
+ ctor->initial_map()->instance_descriptors()->RemoveTransitions();
+ if (!maybe_descriptors->ToObject(&descriptors)) return maybe_descriptors;
+ }
Map::cast(result)->set_instance_descriptors(
DescriptorArray::cast(descriptors));
Map::cast(result)->set_pre_allocated_property_fields(
@@ -3150,15 +3295,18 @@ Object* Map::CopyDropDescriptors() {
}
-Object* Map::CopyNormalized(PropertyNormalizationMode mode,
- NormalizedMapSharingMode sharing) {
+MaybeObject* Map::CopyNormalized(PropertyNormalizationMode mode,
+ NormalizedMapSharingMode sharing) {
int new_instance_size = instance_size();
if (mode == CLEAR_INOBJECT_PROPERTIES) {
new_instance_size -= inobject_properties() * kPointerSize;
}
- Object* result = Heap::AllocateMap(instance_type(), new_instance_size);
- if (result->IsFailure()) return result;
+ Object* result;
+ { MaybeObject* maybe_result =
+ Heap::AllocateMap(instance_type(), new_instance_size);
+ if (!maybe_result->ToObject(&result)) return maybe_result;
+ }
if (mode != CLEAR_INOBJECT_PROPERTIES) {
Map::cast(result)->set_inobject_properties(inobject_properties());
@@ -3182,21 +3330,28 @@ Object* Map::CopyNormalized(PropertyNormalizationMode mode,
}
-Object* Map::CopyDropTransitions() {
- Object* new_map = CopyDropDescriptors();
- if (new_map->IsFailure()) return new_map;
- Object* descriptors = instance_descriptors()->RemoveTransitions();
- if (descriptors->IsFailure()) return descriptors;
+MaybeObject* Map::CopyDropTransitions() {
+ Object* new_map;
+ { MaybeObject* maybe_new_map = CopyDropDescriptors();
+ if (!maybe_new_map->ToObject(&new_map)) return maybe_new_map;
+ }
+ Object* descriptors;
+ { MaybeObject* maybe_descriptors =
+ instance_descriptors()->RemoveTransitions();
+ if (!maybe_descriptors->ToObject(&descriptors)) return maybe_descriptors;
+ }
cast(new_map)->set_instance_descriptors(DescriptorArray::cast(descriptors));
return new_map;
}
-Object* Map::UpdateCodeCache(String* name, Code* code) {
+MaybeObject* Map::UpdateCodeCache(String* name, Code* code) {
// Allocate the code cache if not present.
if (code_cache()->IsFixedArray()) {
- Object* result = Heap::AllocateCodeCache();
- if (result->IsFailure()) return result;
+ Object* result;
+ { MaybeObject* maybe_result = Heap::AllocateCodeCache();
+ if (!maybe_result->ToObject(&result)) return maybe_result;
+ }
set_code_cache(result);
}
@@ -3273,7 +3428,7 @@ void Map::TraverseTransitionTree(TraverseCallback callback, void* data) {
}
-Object* CodeCache::Update(String* name, Code* code) {
+MaybeObject* CodeCache::Update(String* name, Code* code) {
ASSERT(code->ic_state() == MONOMORPHIC);
// The number of monomorphic stubs for normal load/store/call IC's can grow to
@@ -3282,9 +3437,11 @@ Object* CodeCache::Update(String* name, Code* code) {
if (code->type() == NORMAL) {
// Make sure that a hash table is allocated for the normal load code cache.
if (normal_type_cache()->IsUndefined()) {
- Object* result =
- CodeCacheHashTable::Allocate(CodeCacheHashTable::kInitialSize);
- if (result->IsFailure()) return result;
+ Object* result;
+ { MaybeObject* maybe_result =
+ CodeCacheHashTable::Allocate(CodeCacheHashTable::kInitialSize);
+ if (!maybe_result->ToObject(&result)) return maybe_result;
+ }
set_normal_type_cache(result);
}
return UpdateNormalTypeCache(name, code);
@@ -3295,7 +3452,7 @@ Object* CodeCache::Update(String* name, Code* code) {
}
-Object* CodeCache::UpdateDefaultCache(String* name, Code* code) {
+MaybeObject* CodeCache::UpdateDefaultCache(String* name, Code* code) {
// When updating the default code cache we disregard the type encoded in the
// flags. This allows call constant stubs to overwrite call field
// stubs, etc.
@@ -3341,8 +3498,10 @@ Object* CodeCache::UpdateDefaultCache(String* name, Code* code) {
int new_length = length + ((length >> 1)) + kCodeCacheEntrySize;
new_length = new_length - new_length % kCodeCacheEntrySize;
ASSERT((new_length % kCodeCacheEntrySize) == 0);
- Object* result = cache->CopySize(new_length);
- if (result->IsFailure()) return result;
+ Object* result;
+ { MaybeObject* maybe_result = cache->CopySize(new_length);
+ if (!maybe_result->ToObject(&result)) return maybe_result;
+ }
// Add the (name, code) pair to the new cache.
cache = FixedArray::cast(result);
@@ -3353,11 +3512,13 @@ Object* CodeCache::UpdateDefaultCache(String* name, Code* code) {
}
-Object* CodeCache::UpdateNormalTypeCache(String* name, Code* code) {
+MaybeObject* CodeCache::UpdateNormalTypeCache(String* name, Code* code) {
// Adding a new entry can cause a new cache to be allocated.
CodeCacheHashTable* cache = CodeCacheHashTable::cast(normal_type_cache());
- Object* new_cache = cache->Put(name, code);
- if (new_cache->IsFailure()) return new_cache;
+ Object* new_cache;
+ { MaybeObject* maybe_new_cache = cache->Put(name, code);
+ if (!maybe_new_cache->ToObject(&new_cache)) return maybe_new_cache;
+ }
set_normal_type_cache(new_cache);
return this;
}
@@ -3475,10 +3636,12 @@ class CodeCacheHashTableKey : public HashTableKey {
return NameFlagsHashHelper(name, code->flags());
}
- Object* AsObject() {
+ MUST_USE_RESULT MaybeObject* AsObject() {
ASSERT(code_ != NULL);
- Object* obj = Heap::AllocateFixedArray(2);
- if (obj->IsFailure()) return obj;
+ Object* obj;
+ { MaybeObject* maybe_obj = Heap::AllocateFixedArray(2);
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
FixedArray* pair = FixedArray::cast(obj);
pair->set(0, name_);
pair->set(1, code_);
@@ -3500,17 +3663,21 @@ Object* CodeCacheHashTable::Lookup(String* name, Code::Flags flags) {
}
-Object* CodeCacheHashTable::Put(String* name, Code* code) {
+MaybeObject* CodeCacheHashTable::Put(String* name, Code* code) {
CodeCacheHashTableKey key(name, code);
- Object* obj = EnsureCapacity(1, &key);
- if (obj->IsFailure()) return obj;
+ Object* obj;
+ { MaybeObject* maybe_obj = EnsureCapacity(1, &key);
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
// Don't use this, as the table might have grown.
CodeCacheHashTable* cache = reinterpret_cast<CodeCacheHashTable*>(obj);
int entry = cache->FindInsertionEntry(key.Hash());
- Object* k = key.AsObject();
- if (k->IsFailure()) return k;
+ Object* k;
+ { MaybeObject* maybe_k = key.AsObject();
+ if (!maybe_k->ToObject(&k)) return maybe_k;
+ }
cache->set(EntryToIndex(entry), k);
cache->set(EntryToIndex(entry) + 1, code);
@@ -3548,7 +3715,7 @@ static bool HasKey(FixedArray* array, Object* key) {
}
-Object* FixedArray::AddKeysFromJSArray(JSArray* array) {
+MaybeObject* FixedArray::AddKeysFromJSArray(JSArray* array) {
ASSERT(!array->HasPixelElements() && !array->HasExternalArrayElements());
switch (array->GetElementsKind()) {
case JSObject::FAST_ELEMENTS:
@@ -3558,8 +3725,10 @@ Object* FixedArray::AddKeysFromJSArray(JSArray* array) {
int size = dict->NumberOfElements();
// Allocate a temporary fixed array.
- Object* object = Heap::AllocateFixedArray(size);
- if (object->IsFailure()) return object;
+ Object* object;
+ { MaybeObject* maybe_object = Heap::AllocateFixedArray(size);
+ if (!maybe_object->ToObject(&object)) return maybe_object;
+ }
FixedArray* key_array = FixedArray::cast(object);
int capacity = dict->Capacity();
@@ -3581,7 +3750,7 @@ Object* FixedArray::AddKeysFromJSArray(JSArray* array) {
}
-Object* FixedArray::UnionOfKeys(FixedArray* other) {
+MaybeObject* FixedArray::UnionOfKeys(FixedArray* other) {
int len0 = length();
#ifdef DEBUG
if (FLAG_enable_slow_asserts) {
@@ -3606,8 +3775,10 @@ Object* FixedArray::UnionOfKeys(FixedArray* other) {
if (extra == 0) return this;
// Allocate the result
- Object* obj = Heap::AllocateFixedArray(len0 + extra);
- if (obj->IsFailure()) return obj;
+ Object* obj;
+ { MaybeObject* maybe_obj = Heap::AllocateFixedArray(len0 + extra);
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
// Fill in the content
AssertNoAllocation no_gc;
FixedArray* result = FixedArray::cast(obj);
@@ -3633,10 +3804,12 @@ Object* FixedArray::UnionOfKeys(FixedArray* other) {
}
-Object* FixedArray::CopySize(int new_length) {
+MaybeObject* FixedArray::CopySize(int new_length) {
if (new_length == 0) return Heap::empty_fixed_array();
- Object* obj = Heap::AllocateFixedArray(new_length);
- if (obj->IsFailure()) return obj;
+ Object* obj;
+ { MaybeObject* maybe_obj = Heap::AllocateFixedArray(new_length);
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
FixedArray* result = FixedArray::cast(obj);
// Copy the content
AssertNoAllocation no_gc;
@@ -3671,20 +3844,24 @@ bool FixedArray::IsEqualTo(FixedArray* other) {
#endif
-Object* DescriptorArray::Allocate(int number_of_descriptors) {
+MaybeObject* DescriptorArray::Allocate(int number_of_descriptors) {
if (number_of_descriptors == 0) {
return Heap::empty_descriptor_array();
}
// Allocate the array of keys.
- Object* array =
- Heap::AllocateFixedArray(ToKeyIndex(number_of_descriptors));
- if (array->IsFailure()) return array;
+ Object* array;
+ { MaybeObject* maybe_array =
+ Heap::AllocateFixedArray(ToKeyIndex(number_of_descriptors));
+ if (!maybe_array->ToObject(&array)) return maybe_array;
+ }
// Do not use DescriptorArray::cast on incomplete object.
FixedArray* result = FixedArray::cast(array);
// Allocate the content array and set it in the descriptor array.
- array = Heap::AllocateFixedArray(number_of_descriptors << 1);
- if (array->IsFailure()) return array;
+ { MaybeObject* maybe_array =
+ Heap::AllocateFixedArray(number_of_descriptors << 1);
+ if (!maybe_array->ToObject(&array)) return maybe_array;
+ }
result->set(kContentArrayIndex, array);
result->set(kEnumerationIndexIndex,
Smi::FromInt(PropertyDetails::kInitialIndex));
@@ -3710,8 +3887,8 @@ void DescriptorArray::SetEnumCache(FixedArray* bridge_storage,
}
-Object* DescriptorArray::CopyInsert(Descriptor* descriptor,
- TransitionFlag transition_flag) {
+MaybeObject* DescriptorArray::CopyInsert(Descriptor* descriptor,
+ TransitionFlag transition_flag) {
// Transitions are only kept when inserting another transition.
// This precondition is not required by this function's implementation, but
// is currently required by the semantics of maps, so we check it.
@@ -3722,8 +3899,10 @@ Object* DescriptorArray::CopyInsert(Descriptor* descriptor,
ASSERT(descriptor->GetDetails().type() != NULL_DESCRIPTOR);
// Ensure the key is a symbol.
- Object* result = descriptor->KeyToSymbol();
- if (result->IsFailure()) return result;
+ Object* result;
+ { MaybeObject* maybe_result = descriptor->KeyToSymbol();
+ if (!maybe_result->ToObject(&result)) return maybe_result;
+ }
int transitions = 0;
int null_descriptors = 0;
@@ -3763,8 +3942,9 @@ Object* DescriptorArray::CopyInsert(Descriptor* descriptor,
++new_size;
}
}
- result = Allocate(new_size);
- if (result->IsFailure()) return result;
+ { MaybeObject* maybe_result = Allocate(new_size);
+ if (!maybe_result->ToObject(&result)) return maybe_result;
+ }
DescriptorArray* new_descriptors = DescriptorArray::cast(result);
// Set the enumeration index in the descriptors and set the enumeration index
// in the result.
@@ -3812,7 +3992,7 @@ Object* DescriptorArray::CopyInsert(Descriptor* descriptor,
}
-Object* DescriptorArray::RemoveTransitions() {
+MaybeObject* DescriptorArray::RemoveTransitions() {
// Remove all transitions and null descriptors. Return a copy of the array
// with all transitions removed, or a Failure object if the new array could
// not be allocated.
@@ -3824,8 +4004,10 @@ Object* DescriptorArray::RemoveTransitions() {
}
// Allocate the new descriptor array.
- Object* result = Allocate(number_of_descriptors() - num_removed);
- if (result->IsFailure()) return result;
+ Object* result;
+ { MaybeObject* maybe_result = Allocate(number_of_descriptors() - num_removed);
+ if (!maybe_result->ToObject(&result)) return maybe_result;
+ }
DescriptorArray* new_descriptors = DescriptorArray::cast(result);
// Copy the content.
@@ -5063,9 +5245,9 @@ uint32_t String::ComputeHashField(unibrow::CharacterStream* buffer,
}
-Object* String::SubString(int start, int end, PretenureFlag pretenure) {
+MaybeObject* String::SubString(int start, int end, PretenureFlag pretenure) {
if (start == 0 && end == length()) return this;
- Object* result = Heap::AllocateSubString(this, start, end, pretenure);
+ MaybeObject* result = Heap::AllocateSubString(this, start, end, pretenure);
return result;
}
@@ -5166,7 +5348,7 @@ Object* JSFunction::SetInstancePrototype(Object* value) {
}
-Object* JSFunction::SetPrototype(Object* value) {
+MaybeObject* JSFunction::SetPrototype(Object* value) {
ASSERT(should_have_prototype());
Object* construct_prototype = value;
@@ -5178,8 +5360,10 @@ Object* JSFunction::SetPrototype(Object* value) {
// Copy the map so this does not affect unrelated functions.
// Remove map transitions because they point to maps with a
// different prototype.
- Object* new_map = map()->CopyDropTransitions();
- if (new_map->IsFailure()) return new_map;
+ Object* new_map;
+ { MaybeObject* maybe_new_map = map()->CopyDropTransitions();
+ if (!maybe_new_map->ToObject(&new_map)) return maybe_new_map;
+ }
set_map(Map::cast(new_map));
map()->set_constructor(value);
map()->set_non_instance_prototype(true);
@@ -5212,9 +5396,11 @@ Context* JSFunction::GlobalContextFromLiterals(FixedArray* literals) {
}
-Object* Oddball::Initialize(const char* to_string, Object* to_number) {
- Object* symbol = Heap::LookupAsciiSymbol(to_string);
- if (symbol->IsFailure()) return symbol;
+MaybeObject* Oddball::Initialize(const char* to_string, Object* to_number) {
+ Object* symbol;
+ { MaybeObject* maybe_symbol = Heap::LookupAsciiSymbol(to_string);
+ if (!maybe_symbol->ToObject(&symbol)) return maybe_symbol;
+ }
set_to_string(String::cast(symbol));
set_to_number(to_number);
return this;
@@ -5703,16 +5889,20 @@ void Code::Disassemble(const char* name) {
#endif // ENABLE_DISASSEMBLER
-Object* JSObject::SetFastElementsCapacityAndLength(int capacity, int length) {
+MaybeObject* JSObject::SetFastElementsCapacityAndLength(int capacity,
+ int length) {
// We should never end in here with a pixel or external array.
ASSERT(!HasPixelElements() && !HasExternalArrayElements());
- Object* obj = Heap::AllocateFixedArrayWithHoles(capacity);
- if (obj->IsFailure()) return obj;
+ Object* obj;
+ { MaybeObject* maybe_obj = Heap::AllocateFixedArrayWithHoles(capacity);
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
FixedArray* elems = FixedArray::cast(obj);
- obj = map()->GetFastElementsMap();
- if (obj->IsFailure()) return obj;
+ { MaybeObject* maybe_obj = map()->GetFastElementsMap();
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
Map* new_map = Map::cast(obj);
AssertNoAllocation no_gc;
@@ -5754,7 +5944,7 @@ Object* JSObject::SetFastElementsCapacityAndLength(int capacity, int length) {
}
-Object* JSObject::SetSlowElements(Object* len) {
+MaybeObject* JSObject::SetSlowElements(Object* len) {
// We should never end in here with a pixel or external array.
ASSERT(!HasPixelElements() && !HasExternalArrayElements());
@@ -5765,8 +5955,10 @@ Object* JSObject::SetSlowElements(Object* len) {
// Make sure we never try to shrink dense arrays into sparse arrays.
ASSERT(static_cast<uint32_t>(FixedArray::cast(elements())->length()) <=
new_length);
- Object* obj = NormalizeElements();
- if (obj->IsFailure()) return obj;
+ Object* obj;
+ { MaybeObject* maybe_obj = NormalizeElements();
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
// Update length for JSArrays.
if (IsJSArray()) JSArray::cast(this)->set_length(len);
@@ -5789,15 +5981,17 @@ Object* JSObject::SetSlowElements(Object* len) {
}
-Object* JSArray::Initialize(int capacity) {
+MaybeObject* JSArray::Initialize(int capacity) {
ASSERT(capacity >= 0);
set_length(Smi::FromInt(0));
FixedArray* new_elements;
if (capacity == 0) {
new_elements = Heap::empty_fixed_array();
} else {
- Object* obj = Heap::AllocateFixedArrayWithHoles(capacity);
- if (obj->IsFailure()) return obj;
+ Object* obj;
+ { MaybeObject* maybe_obj = Heap::AllocateFixedArrayWithHoles(capacity);
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
new_elements = FixedArray::cast(obj);
}
set_elements(new_elements);
@@ -5824,19 +6018,20 @@ static int NewElementsCapacity(int old_capacity) {
}
-static Object* ArrayLengthRangeError() {
+static Failure* ArrayLengthRangeError() {
HandleScope scope;
return Top::Throw(*Factory::NewRangeError("invalid_array_length",
HandleVector<Object>(NULL, 0)));
}
-Object* JSObject::SetElementsLength(Object* len) {
+MaybeObject* JSObject::SetElementsLength(Object* len) {
// We should never end in here with a pixel or external array.
ASSERT(AllowsSetElementsLength());
- Object* smi_length = len->ToSmi();
- if (smi_length->IsSmi()) {
+ MaybeObject* maybe_smi_length = len->ToSmi();
+ Object* smi_length = Smi::FromInt(0);
+ if (maybe_smi_length->ToObject(&smi_length) && smi_length->IsSmi()) {
const int value = Smi::cast(smi_length)->value();
if (value < 0) return ArrayLengthRangeError();
switch (GetElementsKind()) {
@@ -5844,8 +6039,10 @@ Object* JSObject::SetElementsLength(Object* len) {
int old_capacity = FixedArray::cast(elements())->length();
if (value <= old_capacity) {
if (IsJSArray()) {
- Object* obj = EnsureWritableFastElements();
- if (obj->IsFailure()) return obj;
+ Object* obj;
+ { MaybeObject* maybe_obj = EnsureWritableFastElements();
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
int old_length = FastD2I(JSArray::cast(this)->length()->Number());
// NOTE: We may be able to optimize this by removing the
// last part of the elements backing storage array and
@@ -5861,8 +6058,11 @@ Object* JSObject::SetElementsLength(Object* len) {
int new_capacity = value > min ? value : min;
if (new_capacity <= kMaxFastElementsLength ||
!ShouldConvertToSlowElements(new_capacity)) {
- Object* obj = SetFastElementsCapacityAndLength(new_capacity, value);
- if (obj->IsFailure()) return obj;
+ Object* obj;
+ { MaybeObject* maybe_obj =
+ SetFastElementsCapacityAndLength(new_capacity, value);
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
return this;
}
break;
@@ -5873,8 +6073,10 @@ Object* JSObject::SetElementsLength(Object* len) {
// If the length of a slow array is reset to zero, we clear
// the array and flush backing storage. This has the added
// benefit that the array returns to fast mode.
- Object* obj = ResetElements();
- if (obj->IsFailure()) return obj;
+ Object* obj;
+ { MaybeObject* maybe_obj = ResetElements();
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
} else {
// Remove deleted elements.
uint32_t old_length =
@@ -5903,8 +6105,10 @@ Object* JSObject::SetElementsLength(Object* len) {
// len is not a number so make the array size one and
// set only element to len.
- Object* obj = Heap::AllocateFixedArray(1);
- if (obj->IsFailure()) return obj;
+ Object* obj;
+ { MaybeObject* maybe_obj = Heap::AllocateFixedArray(1);
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
FixedArray::cast(obj)->set(0, len);
if (IsJSArray()) JSArray::cast(this)->set_length(Smi::FromInt(1));
set_elements(FixedArray::cast(obj));
@@ -5912,8 +6116,8 @@ Object* JSObject::SetElementsLength(Object* len) {
}
-Object* JSObject::SetPrototype(Object* value,
- bool skip_hidden_prototypes) {
+MaybeObject* JSObject::SetPrototype(Object* value,
+ bool skip_hidden_prototypes) {
// Silently ignore the change if value is not a JSObject or null.
// SpiderMonkey behaves this way.
if (!value->IsJSObject() && !value->IsNull()) return value;
@@ -5945,8 +6149,10 @@ Object* JSObject::SetPrototype(Object* value,
}
// Set the new prototype of the object.
- Object* new_map = real_receiver->map()->CopyDropTransitions();
- if (new_map->IsFailure()) return new_map;
+ Object* new_map;
+ { MaybeObject* maybe_new_map = real_receiver->map()->CopyDropTransitions();
+ if (!maybe_new_map->ToObject(&new_map)) return maybe_new_map;
+ }
Map::cast(new_map)->set_prototype(value);
real_receiver->set_map(Map::cast(new_map));
@@ -6179,7 +6385,8 @@ bool JSObject::HasElementWithReceiver(JSObject* receiver, uint32_t index) {
}
-Object* JSObject::SetElementWithInterceptor(uint32_t index, Object* value) {
+MaybeObject* JSObject::SetElementWithInterceptor(uint32_t index,
+ Object* value) {
// Make sure that the top context does not change when doing
// callbacks or interceptor calls.
AssertNoContextChange ncc;
@@ -6202,17 +6409,17 @@ Object* JSObject::SetElementWithInterceptor(uint32_t index, Object* value) {
RETURN_IF_SCHEDULED_EXCEPTION();
if (!result.IsEmpty()) return *value_handle;
}
- Object* raw_result =
+ MaybeObject* raw_result =
this_handle->SetElementWithoutInterceptor(index, *value_handle);
RETURN_IF_SCHEDULED_EXCEPTION();
return raw_result;
}
-Object* JSObject::GetElementWithCallback(Object* receiver,
- Object* structure,
- uint32_t index,
- Object* holder) {
+MaybeObject* JSObject::GetElementWithCallback(Object* receiver,
+ Object* structure,
+ uint32_t index,
+ Object* holder) {
ASSERT(!structure->IsProxy());
// api style callbacks.
@@ -6255,10 +6462,10 @@ Object* JSObject::GetElementWithCallback(Object* receiver,
}
-Object* JSObject::SetElementWithCallback(Object* structure,
- uint32_t index,
- Object* value,
- JSObject* holder) {
+MaybeObject* JSObject::SetElementWithCallback(Object* structure,
+ uint32_t index,
+ Object* value,
+ JSObject* holder) {
HandleScope scope;
// We should never get here to initialize a const with the hole
@@ -6314,11 +6521,13 @@ Object* JSObject::SetElementWithCallback(Object* structure,
// Adding n elements in fast case is O(n*n).
// Note: revisit design to have dual undefined values to capture absent
// elements.
-Object* JSObject::SetFastElement(uint32_t index, Object* value) {
+MaybeObject* JSObject::SetFastElement(uint32_t index, Object* value) {
ASSERT(HasFastElements());
- Object* elms_obj = EnsureWritableFastElements();
- if (elms_obj->IsFailure()) return elms_obj;
+ Object* elms_obj;
+ { MaybeObject* maybe_elms_obj = EnsureWritableFastElements();
+ if (!maybe_elms_obj->ToObject(&elms_obj)) return maybe_elms_obj;
+ }
FixedArray* elms = FixedArray::cast(elms_obj);
uint32_t elms_length = static_cast<uint32_t>(elms->length());
@@ -6349,22 +6558,27 @@ Object* JSObject::SetFastElement(uint32_t index, Object* value) {
if (new_capacity <= kMaxFastElementsLength ||
!ShouldConvertToSlowElements(new_capacity)) {
ASSERT(static_cast<uint32_t>(new_capacity) > index);
- Object* obj = SetFastElementsCapacityAndLength(new_capacity, index + 1);
- if (obj->IsFailure()) return obj;
+ Object* obj;
+ { MaybeObject* maybe_obj =
+ SetFastElementsCapacityAndLength(new_capacity, index + 1);
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
FixedArray::cast(elements())->set(index, value);
return value;
}
}
// Otherwise default to slow case.
- Object* obj = NormalizeElements();
- if (obj->IsFailure()) return obj;
+ Object* obj;
+ { MaybeObject* maybe_obj = NormalizeElements();
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
ASSERT(HasDictionaryElements());
return SetElement(index, value);
}
-Object* JSObject::SetElement(uint32_t index, Object* value) {
+MaybeObject* JSObject::SetElement(uint32_t index, Object* value) {
// Check access rights if needed.
if (IsAccessCheckNeeded() &&
!Top::MayIndexedAccess(this, index, v8::ACCESS_SET)) {
@@ -6390,7 +6604,8 @@ Object* JSObject::SetElement(uint32_t index, Object* value) {
}
-Object* JSObject::SetElementWithoutInterceptor(uint32_t index, Object* value) {
+MaybeObject* JSObject::SetElementWithoutInterceptor(uint32_t index,
+ Object* value) {
switch (GetElementsKind()) {
case FAST_ELEMENTS:
// Fast case.
@@ -6461,8 +6676,10 @@ Object* JSObject::SetElementWithoutInterceptor(uint32_t index, Object* value) {
return Top::Throw(*Factory::NewTypeError("object_not_extensible",
HandleVector(args, 1)));
}
- Object* result = dictionary->AtNumberPut(index, value);
- if (result->IsFailure()) return result;
+ Object* result;
+ { MaybeObject* maybe_result = dictionary->AtNumberPut(index, value);
+ if (!maybe_result->ToObject(&result)) return maybe_result;
+ }
if (elms != FixedArray::cast(result)) {
set_elements(FixedArray::cast(result));
}
@@ -6471,9 +6688,13 @@ Object* JSObject::SetElementWithoutInterceptor(uint32_t index, Object* value) {
// Update the array length if this JSObject is an array.
if (IsJSArray()) {
JSArray* array = JSArray::cast(this);
- Object* return_value = array->JSArrayUpdateLengthFromIndex(index,
- value);
- if (return_value->IsFailure()) return return_value;
+ Object* return_value;
+ { MaybeObject* maybe_return_value =
+ array->JSArrayUpdateLengthFromIndex(index, value);
+ if (!maybe_return_value->ToObject(&return_value)) {
+ return maybe_return_value;
+ }
+ }
}
// Attempt to put this object back in fast case.
@@ -6484,8 +6705,11 @@ Object* JSObject::SetElementWithoutInterceptor(uint32_t index, Object* value) {
} else {
new_length = NumberDictionary::cast(elements())->max_number_key() + 1;
}
- Object* obj = SetFastElementsCapacityAndLength(new_length, new_length);
- if (obj->IsFailure()) return obj;
+ Object* obj;
+ { MaybeObject* maybe_obj =
+ SetFastElementsCapacityAndLength(new_length, new_length);
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
#ifdef DEBUG
if (FLAG_trace_normalization) {
PrintF("Object elements are fast case again:\n");
@@ -6507,23 +6731,26 @@ Object* JSObject::SetElementWithoutInterceptor(uint32_t index, Object* value) {
}
-Object* JSArray::JSArrayUpdateLengthFromIndex(uint32_t index, Object* value) {
+MaybeObject* JSArray::JSArrayUpdateLengthFromIndex(uint32_t index,
+ Object* value) {
uint32_t old_len = 0;
CHECK(length()->ToArrayIndex(&old_len));
// Check to see if we need to update the length. For now, we make
// sure that the length stays within 32-bits (unsigned).
if (index >= old_len && index != 0xffffffff) {
- Object* len =
- Heap::NumberFromDouble(static_cast<double>(index) + 1);
- if (len->IsFailure()) return len;
+ Object* len;
+ { MaybeObject* maybe_len =
+ Heap::NumberFromDouble(static_cast<double>(index) + 1);
+ if (!maybe_len->ToObject(&len)) return maybe_len;
+ }
set_length(len);
}
return value;
}
-Object* JSObject::GetElementPostInterceptor(JSObject* receiver,
- uint32_t index) {
+MaybeObject* JSObject::GetElementPostInterceptor(JSObject* receiver,
+ uint32_t index) {
// Get element works for both JSObject and JSArray since
// JSArray::length cannot change.
switch (GetElementsKind()) {
@@ -6579,8 +6806,8 @@ Object* JSObject::GetElementPostInterceptor(JSObject* receiver,
}
-Object* JSObject::GetElementWithInterceptor(JSObject* receiver,
- uint32_t index) {
+MaybeObject* JSObject::GetElementWithInterceptor(JSObject* receiver,
+ uint32_t index) {
// Make sure that the top context does not change when doing
// callbacks or interceptor calls.
AssertNoContextChange ncc;
@@ -6605,14 +6832,15 @@ Object* JSObject::GetElementWithInterceptor(JSObject* receiver,
if (!result.IsEmpty()) return *v8::Utils::OpenHandle(*result);
}
- Object* raw_result =
+ MaybeObject* raw_result =
holder_handle->GetElementPostInterceptor(*this_handle, index);
RETURN_IF_SCHEDULED_EXCEPTION();
return raw_result;
}
-Object* JSObject::GetElementWithReceiver(JSObject* receiver, uint32_t index) {
+MaybeObject* JSObject::GetElementWithReceiver(JSObject* receiver,
+ uint32_t index) {
// Check access rights if needed.
if (IsAccessCheckNeeded() &&
!Top::MayIndexedAccess(this, index, v8::ACCESS_GET)) {
@@ -6863,9 +7091,10 @@ InterceptorInfo* JSObject::GetIndexedInterceptor() {
}
-Object* JSObject::GetPropertyPostInterceptor(JSObject* receiver,
- String* name,
- PropertyAttributes* attributes) {
+MaybeObject* JSObject::GetPropertyPostInterceptor(
+ JSObject* receiver,
+ String* name,
+ PropertyAttributes* attributes) {
// Check local property in holder, ignore interceptor.
LookupResult result;
LocalLookupRealNamedProperty(name, &result);
@@ -6880,7 +7109,7 @@ Object* JSObject::GetPropertyPostInterceptor(JSObject* receiver,
}
-Object* JSObject::GetLocalPropertyPostInterceptor(
+MaybeObject* JSObject::GetLocalPropertyPostInterceptor(
JSObject* receiver,
String* name,
PropertyAttributes* attributes) {
@@ -6894,7 +7123,7 @@ Object* JSObject::GetLocalPropertyPostInterceptor(
}
-Object* JSObject::GetPropertyWithInterceptor(
+MaybeObject* JSObject::GetPropertyWithInterceptor(
JSObject* receiver,
String* name,
PropertyAttributes* attributes) {
@@ -6923,7 +7152,7 @@ Object* JSObject::GetPropertyWithInterceptor(
}
}
- Object* result = holder_handle->GetPropertyPostInterceptor(
+ MaybeObject* result = holder_handle->GetPropertyPostInterceptor(
*receiver_handle,
*name_handle,
attributes);
@@ -7278,7 +7507,7 @@ uint32_t NumberDictionaryShape::HashForObject(uint32_t key, Object* other) {
}
-Object* NumberDictionaryShape::AsObject(uint32_t key) {
+MaybeObject* NumberDictionaryShape::AsObject(uint32_t key) {
return Heap::NumberFromUint32(key);
}
@@ -7301,7 +7530,7 @@ uint32_t StringDictionaryShape::HashForObject(String* key, Object* other) {
}
-Object* StringDictionaryShape::AsObject(String* key) {
+MaybeObject* StringDictionaryShape::AsObject(String* key) {
return key;
}
@@ -7375,9 +7604,11 @@ class StringSharedKey : public HashTableKey {
return StringSharedHashHelper(source, shared);
}
- Object* AsObject() {
- Object* obj = Heap::AllocateFixedArray(2);
- if (obj->IsFailure()) return obj;
+ MUST_USE_RESULT MaybeObject* AsObject() {
+ Object* obj;
+ { MaybeObject* maybe_obj = Heap::AllocateFixedArray(2);
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
FixedArray* pair = FixedArray::cast(obj);
pair->set(0, shared_);
pair->set(1, source_);
@@ -7455,7 +7686,7 @@ class Utf8SymbolKey : public HashTableKey {
return String::cast(other)->Hash();
}
- Object* AsObject() {
+ MaybeObject* AsObject() {
if (hash_field_ == 0) Hash();
return Heap::AllocateSymbol(string_, chars_, hash_field_);
}
@@ -7481,7 +7712,7 @@ class SymbolKey : public HashTableKey {
return String::cast(other)->Hash();
}
- Object* AsObject() {
+ MaybeObject* AsObject() {
// Attempt to flatten the string, so that symbols will most often
// be flat strings.
string_ = string_->TryFlattenGetString();
@@ -7522,8 +7753,8 @@ void HashTable<Shape, Key>::IterateElements(ObjectVisitor* v) {
template<typename Shape, typename Key>
-Object* HashTable<Shape, Key>::Allocate(int at_least_space_for,
- PretenureFlag pretenure) {
+MaybeObject* HashTable<Shape, Key>::Allocate(int at_least_space_for,
+ PretenureFlag pretenure) {
const int kMinCapacity = 32;
int capacity = RoundUpToPowerOf2(at_least_space_for * 2);
if (capacity < kMinCapacity) {
@@ -7532,12 +7763,14 @@ Object* HashTable<Shape, Key>::Allocate(int at_least_space_for,
return Failure::OutOfMemoryException();
}
- Object* obj = Heap::AllocateHashTable(EntryToIndex(capacity), pretenure);
- if (!obj->IsFailure()) {
- HashTable::cast(obj)->SetNumberOfElements(0);
- HashTable::cast(obj)->SetNumberOfDeletedElements(0);
- HashTable::cast(obj)->SetCapacity(capacity);
+ Object* obj;
+ { MaybeObject* maybe_obj =
+ Heap::AllocateHashTable(EntryToIndex(capacity), pretenure);
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
}
+ HashTable::cast(obj)->SetNumberOfElements(0);
+ HashTable::cast(obj)->SetNumberOfDeletedElements(0);
+ HashTable::cast(obj)->SetCapacity(capacity);
return obj;
}
@@ -7600,7 +7833,7 @@ int StringDictionary::FindEntry(String* key) {
template<typename Shape, typename Key>
-Object* HashTable<Shape, Key>::EnsureCapacity(int n, Key key) {
+MaybeObject* HashTable<Shape, Key>::EnsureCapacity(int n, Key key) {
int capacity = Capacity();
int nof = NumberOfElements() + n;
int nod = NumberOfDeletedElements();
@@ -7615,8 +7848,11 @@ Object* HashTable<Shape, Key>::EnsureCapacity(int n, Key key) {
const int kMinCapacityForPretenure = 256;
bool pretenure =
(capacity > kMinCapacityForPretenure) && !Heap::InNewSpace(this);
- Object* obj = Allocate(nof * 2, pretenure ? TENURED : NOT_TENURED);
- if (obj->IsFailure()) return obj;
+ Object* obj;
+ { MaybeObject* maybe_obj =
+ Allocate(nof * 2, pretenure ? TENURED : NOT_TENURED);
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
AssertNoAllocation no_gc;
HashTable* table = HashTable::cast(obj);
@@ -7674,13 +7910,13 @@ template class Dictionary<StringDictionaryShape, String*>;
template class Dictionary<NumberDictionaryShape, uint32_t>;
-template Object* Dictionary<NumberDictionaryShape, uint32_t>::Allocate(
+template MaybeObject* Dictionary<NumberDictionaryShape, uint32_t>::Allocate(
int);
-template Object* Dictionary<StringDictionaryShape, String*>::Allocate(
+template MaybeObject* Dictionary<StringDictionaryShape, String*>::Allocate(
int);
-template Object* Dictionary<NumberDictionaryShape, uint32_t>::AtPut(
+template MaybeObject* Dictionary<NumberDictionaryShape, uint32_t>::AtPut(
uint32_t, Object*);
template Object* Dictionary<NumberDictionaryShape, uint32_t>::SlowReverseLookup(
@@ -7705,29 +7941,29 @@ template int
Dictionary<StringDictionaryShape, String*>::NumberOfElementsFilterAttributes(
PropertyAttributes);
-template Object* Dictionary<StringDictionaryShape, String*>::Add(
+template MaybeObject* Dictionary<StringDictionaryShape, String*>::Add(
String*, Object*, PropertyDetails);
-template Object*
+template MaybeObject*
Dictionary<StringDictionaryShape, String*>::GenerateNewEnumerationIndices();
template int
Dictionary<NumberDictionaryShape, uint32_t>::NumberOfElementsFilterAttributes(
PropertyAttributes);
-template Object* Dictionary<NumberDictionaryShape, uint32_t>::Add(
+template MaybeObject* Dictionary<NumberDictionaryShape, uint32_t>::Add(
uint32_t, Object*, PropertyDetails);
-template Object* Dictionary<NumberDictionaryShape, uint32_t>::EnsureCapacity(
- int, uint32_t);
+template MaybeObject* Dictionary<NumberDictionaryShape, uint32_t>::
+ EnsureCapacity(int, uint32_t);
-template Object* Dictionary<StringDictionaryShape, String*>::EnsureCapacity(
- int, String*);
+template MaybeObject* Dictionary<StringDictionaryShape, String*>::
+ EnsureCapacity(int, String*);
-template Object* Dictionary<NumberDictionaryShape, uint32_t>::AddEntry(
+template MaybeObject* Dictionary<NumberDictionaryShape, uint32_t>::AddEntry(
uint32_t, Object*, PropertyDetails, uint32_t);
-template Object* Dictionary<StringDictionaryShape, String*>::AddEntry(
+template MaybeObject* Dictionary<StringDictionaryShape, String*>::AddEntry(
String*, Object*, PropertyDetails, uint32_t);
template
@@ -7742,7 +7978,7 @@ int HashTable<NumberDictionaryShape, uint32_t>::FindEntry(uint32_t);
// Collates undefined and unexisting elements below limit from position
// zero of the elements. The object stays in Dictionary mode.
-Object* JSObject::PrepareSlowElementsForSort(uint32_t limit) {
+MaybeObject* JSObject::PrepareSlowElementsForSort(uint32_t limit) {
ASSERT(HasDictionaryElements());
// Must stay in dictionary mode, either because of requires_slow_elements,
// or because we are not going to sort (and therefore compact) all of the
@@ -7751,13 +7987,18 @@ Object* JSObject::PrepareSlowElementsForSort(uint32_t limit) {
HeapNumber* result_double = NULL;
if (limit > static_cast<uint32_t>(Smi::kMaxValue)) {
// Allocate space for result before we start mutating the object.
- Object* new_double = Heap::AllocateHeapNumber(0.0);
- if (new_double->IsFailure()) return new_double;
+ Object* new_double;
+ { MaybeObject* maybe_new_double = Heap::AllocateHeapNumber(0.0);
+ if (!maybe_new_double->ToObject(&new_double)) return maybe_new_double;
+ }
result_double = HeapNumber::cast(new_double);
}
- Object* obj = NumberDictionary::Allocate(dict->NumberOfElements());
- if (obj->IsFailure()) return obj;
+ Object* obj;
+ { MaybeObject* maybe_obj =
+ NumberDictionary::Allocate(dict->NumberOfElements());
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
NumberDictionary* new_dict = NumberDictionary::cast(obj);
AssertNoAllocation no_alloc;
@@ -7779,15 +8020,18 @@ Object* JSObject::PrepareSlowElementsForSort(uint32_t limit) {
return Smi::FromInt(-1);
}
uint32_t key = NumberToUint32(k);
+ // In the following we assert that adding the entry to the new dictionary
+ // does not cause GC. This is the case because we made sure to allocate
+ // the dictionary big enough above, so it need not grow.
if (key < limit) {
if (value->IsUndefined()) {
undefs++;
} else {
- new_dict->AddNumberEntry(pos, value, details);
+ new_dict->AddNumberEntry(pos, value, details)->ToObjectUnchecked();
pos++;
}
} else {
- new_dict->AddNumberEntry(key, value, details);
+ new_dict->AddNumberEntry(key, value, details)->ToObjectUnchecked();
}
}
}
@@ -7795,7 +8039,8 @@ Object* JSObject::PrepareSlowElementsForSort(uint32_t limit) {
uint32_t result = pos;
PropertyDetails no_details = PropertyDetails(NONE, NORMAL);
while (undefs > 0) {
- new_dict->AddNumberEntry(pos, Heap::undefined_value(), no_details);
+ new_dict->AddNumberEntry(pos, Heap::undefined_value(), no_details)->
+ ToObjectUnchecked();
pos++;
undefs--;
}
@@ -7816,7 +8061,7 @@ Object* JSObject::PrepareSlowElementsForSort(uint32_t limit) {
// the start of the elements array.
// If the object is in dictionary mode, it is converted to fast elements
// mode.
-Object* JSObject::PrepareElementsForSort(uint32_t limit) {
+MaybeObject* JSObject::PrepareElementsForSort(uint32_t limit) {
ASSERT(!HasPixelElements() && !HasExternalArrayElements());
if (HasDictionaryElements()) {
@@ -7829,22 +8074,28 @@ Object* JSObject::PrepareElementsForSort(uint32_t limit) {
}
// Convert to fast elements.
- Object* obj = map()->GetFastElementsMap();
- if (obj->IsFailure()) return obj;
+ Object* obj;
+ { MaybeObject* maybe_obj = map()->GetFastElementsMap();
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
Map* new_map = Map::cast(obj);
PretenureFlag tenure = Heap::InNewSpace(this) ? NOT_TENURED: TENURED;
- Object* new_array =
- Heap::AllocateFixedArray(dict->NumberOfElements(), tenure);
- if (new_array->IsFailure()) return new_array;
+ Object* new_array;
+ { MaybeObject* maybe_new_array =
+ Heap::AllocateFixedArray(dict->NumberOfElements(), tenure);
+ if (!maybe_new_array->ToObject(&new_array)) return maybe_new_array;
+ }
FixedArray* fast_elements = FixedArray::cast(new_array);
dict->CopyValuesTo(fast_elements);
set_map(new_map);
set_elements(fast_elements);
} else {
- Object* obj = EnsureWritableFastElements();
- if (obj->IsFailure()) return obj;
+ Object* obj;
+ { MaybeObject* maybe_obj = EnsureWritableFastElements();
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
}
ASSERT(HasFastElements());
@@ -7864,8 +8115,10 @@ Object* JSObject::PrepareElementsForSort(uint32_t limit) {
if (limit > static_cast<uint32_t>(Smi::kMaxValue)) {
// Pessimistically allocate space for return value before
// we start mutating the array.
- Object* new_double = Heap::AllocateHeapNumber(0.0);
- if (new_double->IsFailure()) return new_double;
+ Object* new_double;
+ { MaybeObject* maybe_new_double = Heap::AllocateHeapNumber(0.0);
+ if (!maybe_new_double->ToObject(&new_double)) return maybe_new_double;
+ }
result_double = HeapNumber::cast(new_double);
}
@@ -7957,9 +8210,9 @@ Object* PixelArray::SetValue(uint32_t index, Object* value) {
template<typename ExternalArrayClass, typename ValueType>
-static Object* ExternalArrayIntSetter(ExternalArrayClass* receiver,
- uint32_t index,
- Object* value) {
+static MaybeObject* ExternalArrayIntSetter(ExternalArrayClass* receiver,
+ uint32_t index,
+ Object* value) {
ValueType cast_value = 0;
if (index < static_cast<uint32_t>(receiver->length())) {
if (value->IsSmi()) {
@@ -7979,37 +8232,40 @@ static Object* ExternalArrayIntSetter(ExternalArrayClass* receiver,
}
-Object* ExternalByteArray::SetValue(uint32_t index, Object* value) {
+MaybeObject* ExternalByteArray::SetValue(uint32_t index, Object* value) {
return ExternalArrayIntSetter<ExternalByteArray, int8_t>
(this, index, value);
}
-Object* ExternalUnsignedByteArray::SetValue(uint32_t index, Object* value) {
+MaybeObject* ExternalUnsignedByteArray::SetValue(uint32_t index,
+ Object* value) {
return ExternalArrayIntSetter<ExternalUnsignedByteArray, uint8_t>
(this, index, value);
}
-Object* ExternalShortArray::SetValue(uint32_t index, Object* value) {
+MaybeObject* ExternalShortArray::SetValue(uint32_t index,
+ Object* value) {
return ExternalArrayIntSetter<ExternalShortArray, int16_t>
(this, index, value);
}
-Object* ExternalUnsignedShortArray::SetValue(uint32_t index, Object* value) {
+MaybeObject* ExternalUnsignedShortArray::SetValue(uint32_t index,
+ Object* value) {
return ExternalArrayIntSetter<ExternalUnsignedShortArray, uint16_t>
(this, index, value);
}
-Object* ExternalIntArray::SetValue(uint32_t index, Object* value) {
+MaybeObject* ExternalIntArray::SetValue(uint32_t index, Object* value) {
return ExternalArrayIntSetter<ExternalIntArray, int32_t>
(this, index, value);
}
-Object* ExternalUnsignedIntArray::SetValue(uint32_t index, Object* value) {
+MaybeObject* ExternalUnsignedIntArray::SetValue(uint32_t index, Object* value) {
uint32_t cast_value = 0;
if (index < static_cast<uint32_t>(length())) {
if (value->IsSmi()) {
@@ -8029,7 +8285,7 @@ Object* ExternalUnsignedIntArray::SetValue(uint32_t index, Object* value) {
}
-Object* ExternalFloatArray::SetValue(uint32_t index, Object* value) {
+MaybeObject* ExternalFloatArray::SetValue(uint32_t index, Object* value) {
float cast_value = 0;
if (index < static_cast<uint32_t>(length())) {
if (value->IsSmi()) {
@@ -8057,16 +8313,22 @@ Object* GlobalObject::GetPropertyCell(LookupResult* result) {
}
-Object* GlobalObject::EnsurePropertyCell(String* name) {
+MaybeObject* GlobalObject::EnsurePropertyCell(String* name) {
ASSERT(!HasFastProperties());
int entry = property_dictionary()->FindEntry(name);
if (entry == StringDictionary::kNotFound) {
- Object* cell = Heap::AllocateJSGlobalPropertyCell(Heap::the_hole_value());
- if (cell->IsFailure()) return cell;
+ Object* cell;
+ { MaybeObject* maybe_cell =
+ Heap::AllocateJSGlobalPropertyCell(Heap::the_hole_value());
+ if (!maybe_cell->ToObject(&cell)) return maybe_cell;
+ }
PropertyDetails details(NONE, NORMAL);
details = details.AsDeleted();
- Object* dictionary = property_dictionary()->Add(name, cell, details);
- if (dictionary->IsFailure()) return dictionary;
+ Object* dictionary;
+ { MaybeObject* maybe_dictionary =
+ property_dictionary()->Add(name, cell, details);
+ if (!maybe_dictionary->ToObject(&dictionary)) return maybe_dictionary;
+ }
set_properties(StringDictionary::cast(dictionary));
return cell;
} else {
@@ -8077,7 +8339,7 @@ Object* GlobalObject::EnsurePropertyCell(String* name) {
}
-Object* SymbolTable::LookupString(String* string, Object** s) {
+MaybeObject* SymbolTable::LookupString(String* string, Object** s) {
SymbolKey key(string);
return LookupKey(&key, s);
}
@@ -8174,13 +8436,13 @@ bool SymbolTable::LookupTwoCharsSymbolIfExists(uint32_t c1,
}
-Object* SymbolTable::LookupSymbol(Vector<const char> str, Object** s) {
+MaybeObject* SymbolTable::LookupSymbol(Vector<const char> str, Object** s) {
Utf8SymbolKey key(str);
return LookupKey(&key, s);
}
-Object* SymbolTable::LookupKey(HashTableKey* key, Object** s) {
+MaybeObject* SymbolTable::LookupKey(HashTableKey* key, Object** s) {
int entry = FindEntry(key);
// Symbol already in table.
@@ -8190,12 +8452,16 @@ Object* SymbolTable::LookupKey(HashTableKey* key, Object** s) {
}
// Adding new symbol. Grow table if needed.
- Object* obj = EnsureCapacity(1, key);
- if (obj->IsFailure()) return obj;
+ Object* obj;
+ { MaybeObject* maybe_obj = EnsureCapacity(1, key);
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
// Create symbol object.
- Object* symbol = key->AsObject();
- if (symbol->IsFailure()) return symbol;
+ Object* symbol;
+ { MaybeObject* maybe_symbol = key->AsObject();
+ if (!maybe_symbol->ToObject(&symbol)) return maybe_symbol;
+ }
// If the symbol table grew as part of EnsureCapacity, obj is not
// the current symbol table and therefore we cannot use
@@ -8236,10 +8502,12 @@ Object* CompilationCacheTable::LookupRegExp(String* src,
}
-Object* CompilationCacheTable::Put(String* src, Object* value) {
+MaybeObject* CompilationCacheTable::Put(String* src, Object* value) {
StringKey key(src);
- Object* obj = EnsureCapacity(1, &key);
- if (obj->IsFailure()) return obj;
+ Object* obj;
+ { MaybeObject* maybe_obj = EnsureCapacity(1, &key);
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
CompilationCacheTable* cache =
reinterpret_cast<CompilationCacheTable*>(obj);
@@ -8251,19 +8519,23 @@ Object* CompilationCacheTable::Put(String* src, Object* value) {
}
-Object* CompilationCacheTable::PutEval(String* src,
- Context* context,
- Object* value) {
+MaybeObject* CompilationCacheTable::PutEval(String* src,
+ Context* context,
+ Object* value) {
StringSharedKey key(src, context->closure()->shared());
- Object* obj = EnsureCapacity(1, &key);
- if (obj->IsFailure()) return obj;
+ Object* obj;
+ { MaybeObject* maybe_obj = EnsureCapacity(1, &key);
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
CompilationCacheTable* cache =
reinterpret_cast<CompilationCacheTable*>(obj);
int entry = cache->FindInsertionEntry(key.Hash());
- Object* k = key.AsObject();
- if (k->IsFailure()) return k;
+ Object* k;
+ { MaybeObject* maybe_k = key.AsObject();
+ if (!maybe_k->ToObject(&k)) return maybe_k;
+ }
cache->set(EntryToIndex(entry), k);
cache->set(EntryToIndex(entry) + 1, value);
@@ -8272,12 +8544,14 @@ Object* CompilationCacheTable::PutEval(String* src,
}
-Object* CompilationCacheTable::PutRegExp(String* src,
- JSRegExp::Flags flags,
- FixedArray* value) {
+MaybeObject* CompilationCacheTable::PutRegExp(String* src,
+ JSRegExp::Flags flags,
+ FixedArray* value) {
RegExpKey key(src, flags);
- Object* obj = EnsureCapacity(1, &key);
- if (obj->IsFailure()) return obj;
+ Object* obj;
+ { MaybeObject* maybe_obj = EnsureCapacity(1, &key);
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
CompilationCacheTable* cache =
reinterpret_cast<CompilationCacheTable*>(obj);
@@ -8333,10 +8607,12 @@ Object* MapCache::Lookup(FixedArray* array) {
}
-Object* MapCache::Put(FixedArray* array, Map* value) {
+MaybeObject* MapCache::Put(FixedArray* array, Map* value) {
SymbolsKey key(array);
- Object* obj = EnsureCapacity(1, &key);
- if (obj->IsFailure()) return obj;
+ Object* obj;
+ { MaybeObject* maybe_obj = EnsureCapacity(1, &key);
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
MapCache* cache = reinterpret_cast<MapCache*>(obj);
int entry = cache->FindInsertionEntry(key.Hash());
@@ -8348,32 +8624,37 @@ Object* MapCache::Put(FixedArray* array, Map* value) {
template<typename Shape, typename Key>
-Object* Dictionary<Shape, Key>::Allocate(int at_least_space_for) {
- Object* obj = HashTable<Shape, Key>::Allocate(at_least_space_for);
- // Initialize the next enumeration index.
- if (!obj->IsFailure()) {
- Dictionary<Shape, Key>::cast(obj)->
- SetNextEnumerationIndex(PropertyDetails::kInitialIndex);
+MaybeObject* Dictionary<Shape, Key>::Allocate(int at_least_space_for) {
+ Object* obj;
+ { MaybeObject* maybe_obj =
+ HashTable<Shape, Key>::Allocate(at_least_space_for);
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
}
+ // Initialize the next enumeration index.
+ Dictionary<Shape, Key>::cast(obj)->
+ SetNextEnumerationIndex(PropertyDetails::kInitialIndex);
return obj;
}
template<typename Shape, typename Key>
-Object* Dictionary<Shape, Key>::GenerateNewEnumerationIndices() {
+MaybeObject* Dictionary<Shape, Key>::GenerateNewEnumerationIndices() {
int length = HashTable<Shape, Key>::NumberOfElements();
// Allocate and initialize iteration order array.
- Object* obj = Heap::AllocateFixedArray(length);
- if (obj->IsFailure()) return obj;
+ Object* obj;
+ { MaybeObject* maybe_obj = Heap::AllocateFixedArray(length);
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
FixedArray* iteration_order = FixedArray::cast(obj);
for (int i = 0; i < length; i++) {
iteration_order->set(i, Smi::FromInt(i));
}
// Allocate array with enumeration order.
- obj = Heap::AllocateFixedArray(length);
- if (obj->IsFailure()) return obj;
+ { MaybeObject* maybe_obj = Heap::AllocateFixedArray(length);
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
FixedArray* enumeration_order = FixedArray::cast(obj);
// Fill the enumeration order array with property details.
@@ -8414,13 +8695,15 @@ Object* Dictionary<Shape, Key>::GenerateNewEnumerationIndices() {
}
template<typename Shape, typename Key>
-Object* Dictionary<Shape, Key>::EnsureCapacity(int n, Key key) {
+MaybeObject* Dictionary<Shape, Key>::EnsureCapacity(int n, Key key) {
// Check whether there are enough enumeration indices to add n elements.
if (Shape::kIsEnumerable &&
!PropertyDetails::IsValidIndex(NextEnumerationIndex() + n)) {
// If not, we generate new indices for the properties.
- Object* result = GenerateNewEnumerationIndices();
- if (result->IsFailure()) return result;
+ Object* result;
+ { MaybeObject* maybe_result = GenerateNewEnumerationIndices();
+ if (!maybe_result->ToObject(&result)) return maybe_result;
+ }
}
return HashTable<Shape, Key>::EnsureCapacity(n, key);
}
@@ -8464,7 +8747,7 @@ Object* Dictionary<Shape, Key>::DeleteProperty(int entry,
template<typename Shape, typename Key>
-Object* Dictionary<Shape, Key>::AtPut(Key key, Object* value) {
+MaybeObject* Dictionary<Shape, Key>::AtPut(Key key, Object* value) {
int entry = this->FindEntry(key);
// If the entry is present set the value;
@@ -8474,11 +8757,15 @@ Object* Dictionary<Shape, Key>::AtPut(Key key, Object* value) {
}
// Check whether the dictionary should be extended.
- Object* obj = EnsureCapacity(1, key);
- if (obj->IsFailure()) return obj;
+ Object* obj;
+ { MaybeObject* maybe_obj = EnsureCapacity(1, key);
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
- Object* k = Shape::AsObject(key);
- if (k->IsFailure()) return k;
+ Object* k;
+ { MaybeObject* maybe_k = Shape::AsObject(key);
+ if (!maybe_k->ToObject(&k)) return maybe_k;
+ }
PropertyDetails details = PropertyDetails(NONE, NORMAL);
return Dictionary<Shape, Key>::cast(obj)->
AddEntry(key, value, details, Shape::Hash(key));
@@ -8486,14 +8773,16 @@ Object* Dictionary<Shape, Key>::AtPut(Key key, Object* value) {
template<typename Shape, typename Key>
-Object* Dictionary<Shape, Key>::Add(Key key,
- Object* value,
- PropertyDetails details) {
+MaybeObject* Dictionary<Shape, Key>::Add(Key key,
+ Object* value,
+ PropertyDetails details) {
// Valdate key is absent.
SLOW_ASSERT((this->FindEntry(key) == Dictionary<Shape, Key>::kNotFound));
// Check whether the dictionary should be extended.
- Object* obj = EnsureCapacity(1, key);
- if (obj->IsFailure()) return obj;
+ Object* obj;
+ { MaybeObject* maybe_obj = EnsureCapacity(1, key);
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
return Dictionary<Shape, Key>::cast(obj)->
AddEntry(key, value, details, Shape::Hash(key));
}
@@ -8501,13 +8790,15 @@ Object* Dictionary<Shape, Key>::Add(Key key,
// Add a key, value pair to the dictionary.
template<typename Shape, typename Key>
-Object* Dictionary<Shape, Key>::AddEntry(Key key,
- Object* value,
- PropertyDetails details,
- uint32_t hash) {
+MaybeObject* Dictionary<Shape, Key>::AddEntry(Key key,
+ Object* value,
+ PropertyDetails details,
+ uint32_t hash) {
// Compute the key object.
- Object* k = Shape::AsObject(key);
- if (k->IsFailure()) return k;
+ Object* k;
+ { MaybeObject* maybe_k = Shape::AsObject(key);
+ if (!maybe_k->ToObject(&k)) return maybe_k;
+ }
uint32_t entry = Dictionary<Shape, Key>::FindInsertionEntry(hash);
// Insert element at empty or deleted entry
@@ -8545,32 +8836,33 @@ void NumberDictionary::UpdateMaxNumberKey(uint32_t key) {
}
-Object* NumberDictionary::AddNumberEntry(uint32_t key,
- Object* value,
- PropertyDetails details) {
+MaybeObject* NumberDictionary::AddNumberEntry(uint32_t key,
+ Object* value,
+ PropertyDetails details) {
UpdateMaxNumberKey(key);
SLOW_ASSERT(this->FindEntry(key) == kNotFound);
return Add(key, value, details);
}
-Object* NumberDictionary::AtNumberPut(uint32_t key, Object* value) {
+MaybeObject* NumberDictionary::AtNumberPut(uint32_t key, Object* value) {
UpdateMaxNumberKey(key);
return AtPut(key, value);
}
-Object* NumberDictionary::Set(uint32_t key,
- Object* value,
- PropertyDetails details) {
+MaybeObject* NumberDictionary::Set(uint32_t key,
+ Object* value,
+ PropertyDetails details) {
int entry = FindEntry(key);
if (entry == kNotFound) return AddNumberEntry(key, value, details);
// Preserve enumeration index.
details = PropertyDetails(details.attributes(),
details.type(),
DetailsAt(entry).index());
- Object* object_key = NumberDictionaryShape::AsObject(key);
- if (object_key->IsFailure()) return object_key;
+ MaybeObject* maybe_object_key = NumberDictionaryShape::AsObject(key);
+ Object* object_key;
+ if (!maybe_object_key->ToObject(&object_key)) return maybe_object_key;
SetEntry(entry, object_key, value, details);
return this;
}
@@ -8678,7 +8970,7 @@ Object* Dictionary<Shape, Key>::SlowReverseLookup(Object* value) {
}
-Object* StringDictionary::TransformPropertiesToFastFor(
+MaybeObject* StringDictionary::TransformPropertiesToFastFor(
JSObject* obj, int unused_property_fields) {
// Make sure we preserve dictionary representation if there are too many
// descriptors.
@@ -8690,8 +8982,10 @@ Object* StringDictionary::TransformPropertiesToFastFor(
(DescriptorArray::kMaxNumberOfDescriptors -
NumberOfElements());
if (!PropertyDetails::IsValidIndex(max_enumeration_index)) {
- Object* result = GenerateNewEnumerationIndices();
- if (result->IsFailure()) return result;
+ Object* result;
+ { MaybeObject* maybe_result = GenerateNewEnumerationIndices();
+ if (!maybe_result->ToObject(&result)) return maybe_result;
+ }
}
int instance_descriptor_length = 0;
@@ -8714,9 +9008,13 @@ Object* StringDictionary::TransformPropertiesToFastFor(
}
// Allocate the instance descriptor.
- Object* descriptors_unchecked =
- DescriptorArray::Allocate(instance_descriptor_length);
- if (descriptors_unchecked->IsFailure()) return descriptors_unchecked;
+ Object* descriptors_unchecked;
+ { MaybeObject* maybe_descriptors_unchecked =
+ DescriptorArray::Allocate(instance_descriptor_length);
+ if (!maybe_descriptors_unchecked->ToObject(&descriptors_unchecked)) {
+ return maybe_descriptors_unchecked;
+ }
+ }
DescriptorArray* descriptors = DescriptorArray::cast(descriptors_unchecked);
int inobject_props = obj->map()->inobject_properties();
@@ -8729,8 +9027,11 @@ Object* StringDictionary::TransformPropertiesToFastFor(
}
// Allocate the fixed array for the fields.
- Object* fields = Heap::AllocateFixedArray(number_of_allocated_fields);
- if (fields->IsFailure()) return fields;
+ Object* fields;
+ { MaybeObject* maybe_fields =
+ Heap::AllocateFixedArray(number_of_allocated_fields);
+ if (!maybe_fields->ToObject(&fields)) return maybe_fields;
+ }
// Fill in the instance descriptor and the fields.
int next_descriptor = 0;
@@ -8740,8 +9041,10 @@ Object* StringDictionary::TransformPropertiesToFastFor(
if (IsKey(k)) {
Object* value = ValueAt(i);
// Ensure the key is a symbol before writing into the instance descriptor.
- Object* key = Heap::LookupSymbol(String::cast(k));
- if (key->IsFailure()) return key;
+ Object* key;
+ { MaybeObject* maybe_key = Heap::LookupSymbol(String::cast(k));
+ if (!maybe_key->ToObject(&key)) return maybe_key;
+ }
PropertyDetails details = DetailsAt(i);
PropertyType type = details.type();
@@ -8780,8 +9083,10 @@ Object* StringDictionary::TransformPropertiesToFastFor(
descriptors->Sort();
// Allocate new map.
- Object* new_map = obj->map()->CopyDropDescriptors();
- if (new_map->IsFailure()) return new_map;
+ Object* new_map;
+ { MaybeObject* maybe_new_map = obj->map()->CopyDropDescriptors();
+ if (!maybe_new_map->ToObject(&new_map)) return maybe_new_map;
+ }
// Transform the object.
obj->set_map(Map::cast(new_map));
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