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1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2014 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "src/factory.h" | 5 #include "src/factory.h" |
6 | 6 |
7 #include "src/allocation-site-scopes.h" | 7 #include "src/allocation-site-scopes.h" |
8 #include "src/base/bits.h" | 8 #include "src/base/bits.h" |
9 #include "src/bootstrapper.h" | 9 #include "src/bootstrapper.h" |
10 #include "src/conversions.h" | 10 #include "src/conversions.h" |
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640 } | 640 } |
641 | 641 |
642 | 642 |
643 MaybeHandle<String> Factory::NewExternalStringFromOneByte( | 643 MaybeHandle<String> Factory::NewExternalStringFromOneByte( |
644 const ExternalOneByteString::Resource* resource) { | 644 const ExternalOneByteString::Resource* resource) { |
645 size_t length = resource->length(); | 645 size_t length = resource->length(); |
646 if (length > static_cast<size_t>(String::kMaxLength)) { | 646 if (length > static_cast<size_t>(String::kMaxLength)) { |
647 THROW_NEW_ERROR(isolate(), NewInvalidStringLengthError(), String); | 647 THROW_NEW_ERROR(isolate(), NewInvalidStringLengthError(), String); |
648 } | 648 } |
649 | 649 |
650 Handle<Map> map = external_one_byte_string_map(); | 650 Handle<Map> map = short_external_one_byte_string_map(); |
651 Handle<ExternalOneByteString> external_string = | 651 Handle<ExternalOneByteString> external_string = |
652 New<ExternalOneByteString>(map, NEW_SPACE); | 652 New<ExternalOneByteString>(map, NEW_SPACE); |
653 external_string->set_length(static_cast<int>(length)); | 653 external_string->set_length(static_cast<int>(length)); |
654 external_string->set_hash_field(String::kEmptyHashField); | 654 external_string->set_hash_field(String::kEmptyHashField); |
655 external_string->set_resource(resource); | 655 external_string->set_resource(resource); |
656 | 656 |
657 return external_string; | 657 return external_string; |
658 } | 658 } |
659 | 659 |
660 | 660 |
661 MaybeHandle<String> Factory::NewExternalStringFromTwoByte( | 661 MaybeHandle<String> Factory::NewExternalStringFromTwoByte( |
662 const ExternalTwoByteString::Resource* resource) { | 662 const ExternalTwoByteString::Resource* resource) { |
663 size_t length = resource->length(); | 663 size_t length = resource->length(); |
664 if (length > static_cast<size_t>(String::kMaxLength)) { | 664 if (length > static_cast<size_t>(String::kMaxLength)) { |
665 THROW_NEW_ERROR(isolate(), NewInvalidStringLengthError(), String); | 665 THROW_NEW_ERROR(isolate(), NewInvalidStringLengthError(), String); |
666 } | 666 } |
667 | 667 |
668 // For small strings we check whether the resource contains only | 668 // For small strings we check whether the resource contains only |
669 // one byte characters. If yes, we use a different string map. | 669 // one byte characters. If yes, we use a different string map. |
670 static const size_t kOneByteCheckLengthLimit = 32; | 670 static const size_t kOneByteCheckLengthLimit = 32; |
671 bool is_one_byte = length <= kOneByteCheckLengthLimit && | 671 bool is_one_byte = length <= kOneByteCheckLengthLimit && |
672 String::IsOneByte(resource->data(), static_cast<int>(length)); | 672 String::IsOneByte(resource->data(), static_cast<int>(length)); |
673 Handle<Map> map = is_one_byte ? | 673 Handle<Map> map = is_one_byte ? |
674 external_string_with_one_byte_data_map() : external_string_map(); | 674 short_external_string_with_one_byte_data_map() |
| 675 : short_external_string_map(); |
675 Handle<ExternalTwoByteString> external_string = | 676 Handle<ExternalTwoByteString> external_string = |
676 New<ExternalTwoByteString>(map, NEW_SPACE); | 677 New<ExternalTwoByteString>(map, NEW_SPACE); |
677 external_string->set_length(static_cast<int>(length)); | 678 external_string->set_length(static_cast<int>(length)); |
678 external_string->set_hash_field(String::kEmptyHashField); | 679 external_string->set_hash_field(String::kEmptyHashField); |
679 external_string->set_resource(resource); | 680 external_string->set_resource(resource); |
680 | 681 |
681 return external_string; | 682 return external_string; |
682 } | 683 } |
683 | 684 |
684 | 685 |
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2361 } | 2362 } |
2362 | 2363 |
2363 | 2364 |
2364 Handle<Object> Factory::ToBoolean(bool value) { | 2365 Handle<Object> Factory::ToBoolean(bool value) { |
2365 return value ? true_value() : false_value(); | 2366 return value ? true_value() : false_value(); |
2366 } | 2367 } |
2367 | 2368 |
2368 | 2369 |
2369 } // namespace internal | 2370 } // namespace internal |
2370 } // namespace v8 | 2371 } // namespace v8 |
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