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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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362 | 362 |
363 | 363 |
364 MUST_USE_RESULT static MaybeObject* CallJsBuiltin( | 364 MUST_USE_RESULT static MaybeObject* CallJsBuiltin( |
365 Isolate* isolate, | 365 Isolate* isolate, |
366 const char* name, | 366 const char* name, |
367 BuiltinArguments<NO_EXTRA_ARGUMENTS> args) { | 367 BuiltinArguments<NO_EXTRA_ARGUMENTS> args) { |
368 HandleScope handleScope(isolate); | 368 HandleScope handleScope(isolate); |
369 | 369 |
370 Handle<Object> js_builtin = | 370 Handle<Object> js_builtin = |
371 GetProperty(Handle<JSObject>(isolate->native_context()->builtins()), | 371 GetProperty(Handle<JSObject>(isolate->native_context()->builtins()), |
372 name); | 372 name).ToHandleChecked(); |
373 Handle<JSFunction> function = Handle<JSFunction>::cast(js_builtin); | 373 Handle<JSFunction> function = Handle<JSFunction>::cast(js_builtin); |
374 int argc = args.length() - 1; | 374 int argc = args.length() - 1; |
375 ScopedVector<Handle<Object> > argv(argc); | 375 ScopedVector<Handle<Object> > argv(argc); |
376 for (int i = 0; i < argc; ++i) { | 376 for (int i = 0; i < argc; ++i) { |
377 argv[i] = args.at<Object>(i + 1); | 377 argv[i] = args.at<Object>(i + 1); |
378 } | 378 } |
379 bool pending_exception; | 379 bool pending_exception; |
380 Handle<Object> result = Execution::Call(isolate, | 380 Handle<Object> result = Execution::Call(isolate, |
381 function, | 381 function, |
382 args.receiver(), | 382 args.receiver(), |
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507 } | 507 } |
508 | 508 |
509 Handle<JSArray> array = Handle<JSArray>::cast(receiver); | 509 Handle<JSArray> array = Handle<JSArray>::cast(receiver); |
510 ASSERT(!array->map()->is_observed()); | 510 ASSERT(!array->map()->is_observed()); |
511 | 511 |
512 int len = Smi::cast(array->length())->value(); | 512 int len = Smi::cast(array->length())->value(); |
513 if (len == 0) return isolate->heap()->undefined_value(); | 513 if (len == 0) return isolate->heap()->undefined_value(); |
514 | 514 |
515 ElementsAccessor* accessor = array->GetElementsAccessor(); | 515 ElementsAccessor* accessor = array->GetElementsAccessor(); |
516 int new_length = len - 1; | 516 int new_length = len - 1; |
517 Handle<Object> element; | 517 MaybeHandle<Object> maybe_element; |
518 if (accessor->HasElement(array, array, new_length, elms_obj)) { | 518 if (accessor->HasElement(array, array, new_length, elms_obj)) { |
519 element = accessor->Get( | 519 maybe_element = accessor->Get(array, array, new_length, elms_obj); |
520 array, array, new_length, elms_obj); | |
521 } else { | 520 } else { |
522 Handle<Object> proto(array->GetPrototype(), isolate); | 521 Handle<Object> proto(array->GetPrototype(), isolate); |
523 element = Object::GetElement(isolate, proto, len - 1); | 522 maybe_element = Object::GetElement(isolate, proto, len - 1); |
524 } | 523 } |
525 RETURN_IF_EMPTY_HANDLE(isolate, element); | 524 Handle<Object> element; |
526 RETURN_IF_EMPTY_HANDLE(isolate, | 525 ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, element, maybe_element); |
527 accessor->SetLength( | 526 RETURN_IF_EMPTY_HANDLE( |
528 array, handle(Smi::FromInt(new_length), isolate))); | 527 isolate, |
| 528 accessor->SetLength(array, handle(Smi::FromInt(new_length), isolate))); |
529 return *element; | 529 return *element; |
530 } | 530 } |
531 | 531 |
532 | 532 |
533 BUILTIN(ArrayShift) { | 533 BUILTIN(ArrayShift) { |
534 HandleScope scope(isolate); | 534 HandleScope scope(isolate); |
535 Heap* heap = isolate->heap(); | 535 Heap* heap = isolate->heap(); |
536 Handle<Object> receiver = args.receiver(); | 536 Handle<Object> receiver = args.receiver(); |
537 MaybeHandle<FixedArrayBase> maybe_elms_obj = | 537 MaybeHandle<FixedArrayBase> maybe_elms_obj = |
538 EnsureJSArrayWithWritableFastElements(isolate, receiver, NULL, 0); | 538 EnsureJSArrayWithWritableFastElements(isolate, receiver, NULL, 0); |
539 Handle<FixedArrayBase> elms_obj; | 539 Handle<FixedArrayBase> elms_obj; |
540 if (!maybe_elms_obj.ToHandle(&elms_obj) || | 540 if (!maybe_elms_obj.ToHandle(&elms_obj) || |
541 !IsJSArrayFastElementMovingAllowed(heap, | 541 !IsJSArrayFastElementMovingAllowed(heap, |
542 *Handle<JSArray>::cast(receiver))) { | 542 *Handle<JSArray>::cast(receiver))) { |
543 return CallJsBuiltin(isolate, "ArrayShift", args); | 543 return CallJsBuiltin(isolate, "ArrayShift", args); |
544 } | 544 } |
545 Handle<JSArray> array = Handle<JSArray>::cast(receiver); | 545 Handle<JSArray> array = Handle<JSArray>::cast(receiver); |
546 ASSERT(!array->map()->is_observed()); | 546 ASSERT(!array->map()->is_observed()); |
547 | 547 |
548 int len = Smi::cast(array->length())->value(); | 548 int len = Smi::cast(array->length())->value(); |
549 if (len == 0) return heap->undefined_value(); | 549 if (len == 0) return heap->undefined_value(); |
550 | 550 |
551 // Get first element | 551 // Get first element |
552 ElementsAccessor* accessor = array->GetElementsAccessor(); | 552 ElementsAccessor* accessor = array->GetElementsAccessor(); |
553 Handle<Object> first = accessor->Get(receiver, array, 0, elms_obj); | 553 Handle<Object> first; |
554 RETURN_IF_EMPTY_HANDLE(isolate, first); | 554 ASSIGN_RETURN_FAILURE_ON_EXCEPTION( |
| 555 isolate, first, accessor->Get(receiver, array, 0, elms_obj)); |
555 if (first->IsTheHole()) { | 556 if (first->IsTheHole()) { |
556 first = isolate->factory()->undefined_value(); | 557 first = isolate->factory()->undefined_value(); |
557 } | 558 } |
558 | 559 |
559 if (heap->CanMoveObjectStart(*elms_obj)) { | 560 if (heap->CanMoveObjectStart(*elms_obj)) { |
560 array->set_elements(LeftTrimFixedArray(heap, *elms_obj, 1)); | 561 array->set_elements(LeftTrimFixedArray(heap, *elms_obj, 1)); |
561 } else { | 562 } else { |
562 // Shift the elements. | 563 // Shift the elements. |
563 if (elms_obj->IsFixedArray()) { | 564 if (elms_obj->IsFixedArray()) { |
564 Handle<FixedArray> elms = Handle<FixedArray>::cast(elms_obj); | 565 Handle<FixedArray> elms = Handle<FixedArray>::cast(elms_obj); |
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1744 } | 1745 } |
1745 BUILTIN_LIST_C(DEFINE_BUILTIN_ACCESSOR_C) | 1746 BUILTIN_LIST_C(DEFINE_BUILTIN_ACCESSOR_C) |
1746 BUILTIN_LIST_A(DEFINE_BUILTIN_ACCESSOR_A) | 1747 BUILTIN_LIST_A(DEFINE_BUILTIN_ACCESSOR_A) |
1747 BUILTIN_LIST_H(DEFINE_BUILTIN_ACCESSOR_H) | 1748 BUILTIN_LIST_H(DEFINE_BUILTIN_ACCESSOR_H) |
1748 BUILTIN_LIST_DEBUG_A(DEFINE_BUILTIN_ACCESSOR_A) | 1749 BUILTIN_LIST_DEBUG_A(DEFINE_BUILTIN_ACCESSOR_A) |
1749 #undef DEFINE_BUILTIN_ACCESSOR_C | 1750 #undef DEFINE_BUILTIN_ACCESSOR_C |
1750 #undef DEFINE_BUILTIN_ACCESSOR_A | 1751 #undef DEFINE_BUILTIN_ACCESSOR_A |
1751 | 1752 |
1752 | 1753 |
1753 } } // namespace v8::internal | 1754 } } // namespace v8::internal |
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