Index: src/builtins/builtins-typedarray.cc |
diff --git a/src/builtins/builtins-typedarray.cc b/src/builtins/builtins-typedarray.cc |
index 14d09ff2ef850abda837b2ad70e92f79fdc0d461..e394df4e7abfe2d357dc6dc2fbeb649010996243 100644 |
--- a/src/builtins/builtins-typedarray.cc |
+++ b/src/builtins/builtins-typedarray.cc |
@@ -167,95 +167,5 @@ void Builtins::Generate_TypedArrayPrototypeKeys( |
state, "%TypedArray%.prototype.keys()"); |
} |
-namespace { |
- |
-MaybeHandle<JSTypedArray> ValiadateTypedArray(Isolate* isolate, |
- Handle<Object> receiver, |
- const char* method_name) { |
- if (V8_UNLIKELY(!receiver->IsJSTypedArray())) { |
- const MessageTemplate::Template message = MessageTemplate::kNotTypedArray; |
- THROW_NEW_ERROR(isolate, NewTypeError(message), JSTypedArray); |
- } |
- |
- Handle<JSTypedArray> array = Handle<JSTypedArray>::cast(receiver); |
- if (V8_UNLIKELY(array->WasNeutered())) { |
- const MessageTemplate::Template message = MessageTemplate::kNotTypedArray; |
- Handle<String> operation = |
- isolate->factory()->NewStringFromAsciiChecked(method_name); |
- THROW_NEW_ERROR(isolate, NewTypeError(message, operation), JSTypedArray); |
- } |
- |
- return array; |
-} |
- |
-int64_t CapRelativeIndex(Handle<Object> num, int64_t minimum, int64_t maximum) { |
- int64_t relative; |
- if (V8_LIKELY(num->IsSmi())) { |
- relative = Smi::cast(*num)->value(); |
- } else { |
- DCHECK(num->IsHeapNumber()); |
- double fp = HeapNumber::cast(*num)->value(); |
- if (V8_UNLIKELY(!std::isfinite(fp))) { |
- // +Infinity / -Infinity |
- DCHECK(!std::isnan(fp)); |
- return fp < 0 ? minimum : maximum; |
- } |
- relative = static_cast<int64_t>(fp); |
- } |
- return relative < 0 ? std::max<int64_t>(relative + maximum, minimum) |
- : std::min<int64_t>(relative, maximum); |
-} |
- |
-} // namespace |
- |
-BUILTIN(TypedArrayPrototypeCopyWithin) { |
- HandleScope scope(isolate); |
- |
- Handle<JSTypedArray> array; |
- const char* method = "%TypedArray%.prototype.copyWithin"; |
- ASSIGN_RETURN_FAILURE_ON_EXCEPTION( |
- isolate, array, ValiadateTypedArray(isolate, args.receiver(), method)); |
- |
- int64_t len = array->length_value(); |
- int64_t to = 0; |
- int64_t from = 0; |
- int64_t final = len; |
- |
- if (V8_LIKELY(args.length() > 1)) { |
- Handle<Object> num; |
- ASSIGN_RETURN_FAILURE_ON_EXCEPTION( |
- isolate, num, Object::ToInteger(isolate, args.at<Object>(1))); |
- to = CapRelativeIndex(num, 0, len); |
- |
- if (args.length() > 2) { |
- ASSIGN_RETURN_FAILURE_ON_EXCEPTION( |
- isolate, num, Object::ToInteger(isolate, args.at<Object>(2))); |
- from = CapRelativeIndex(num, 0, len); |
- |
- Handle<Object> end = args.atOrUndefined(isolate, 3); |
- if (!end->IsUndefined(isolate)) { |
- ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, num, |
- Object::ToInteger(isolate, end)); |
- final = CapRelativeIndex(num, 0, len); |
- } |
- } |
- } |
- |
- int64_t count = std::min<int64_t>(final - from, len - to); |
- if (count <= 0) return *array; |
- |
- Handle<FixedTypedArrayBase> elements( |
- FixedTypedArrayBase::cast(array->elements())); |
- size_t element_size = array->element_size(); |
- to = to * element_size; |
- from = from * element_size; |
- count = count * element_size; |
- |
- uint8_t* data = static_cast<uint8_t*>(elements->DataPtr()); |
- std::memmove(data + to, data + from, count); |
- |
- return *array; |
-} |
- |
} // namespace internal |
} // namespace v8 |