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1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 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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599 // sequential string of type StringType. | 599 // sequential string of type StringType. |
600 template <bool seq_ascii> | 600 template <bool seq_ascii> |
601 template <typename StringType, typename SinkChar> | 601 template <typename StringType, typename SinkChar> |
602 Handle<String> JsonParser<seq_ascii>::SlowScanJsonString( | 602 Handle<String> JsonParser<seq_ascii>::SlowScanJsonString( |
603 Handle<String> prefix, int start, int end) { | 603 Handle<String> prefix, int start, int end) { |
604 int count = end - start; | 604 int count = end - start; |
605 int max_length = count + source_length_ - position_; | 605 int max_length = count + source_length_ - position_; |
606 int length = Min(max_length, Max(kInitialSpecialStringLength, 2 * count)); | 606 int length = Min(max_length, Max(kInitialSpecialStringLength, 2 * count)); |
607 Handle<StringType> seq_string = | 607 Handle<StringType> seq_string = |
608 NewRawString<StringType>(factory(), length, pretenure_); | 608 NewRawString<StringType>(factory(), length, pretenure_); |
609 ASSERT(!seq_string.is_null()); | |
610 // Copy prefix into seq_str. | 609 // Copy prefix into seq_str. |
611 SinkChar* dest = seq_string->GetChars(); | 610 SinkChar* dest = seq_string->GetChars(); |
612 String::WriteToFlat(*prefix, dest, start, end); | 611 String::WriteToFlat(*prefix, dest, start, end); |
613 | 612 |
614 while (c0_ != '"') { | 613 while (c0_ != '"') { |
615 // Check for control character (0x00-0x1f) or unterminated string (<0). | 614 // Check for control character (0x00-0x1f) or unterminated string (<0). |
616 if (c0_ < 0x20) return Handle<String>::null(); | 615 if (c0_ < 0x20) return Handle<String>::null(); |
617 if (count >= length) { | 616 if (count >= length) { |
618 // We need to create a longer sequential string for the result. | 617 // We need to create a longer sequential string for the result. |
619 return SlowScanJsonString<StringType, SinkChar>(seq_string, 0, count); | 618 return SlowScanJsonString<StringType, SinkChar>(seq_string, 0, count); |
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787 position_); | 786 position_); |
788 } | 787 } |
789 } else { | 788 } else { |
790 return SlowScanJsonString<SeqOneByteString, uint8_t>(source_, | 789 return SlowScanJsonString<SeqOneByteString, uint8_t>(source_, |
791 beg_pos, | 790 beg_pos, |
792 position_); | 791 position_); |
793 } | 792 } |
794 } while (c0_ != '"'); | 793 } while (c0_ != '"'); |
795 int length = position_ - beg_pos; | 794 int length = position_ - beg_pos; |
796 Handle<String> result = factory()->NewRawOneByteString(length, pretenure_); | 795 Handle<String> result = factory()->NewRawOneByteString(length, pretenure_); |
797 ASSERT(!result.is_null()); | |
798 uint8_t* dest = SeqOneByteString::cast(*result)->GetChars(); | 796 uint8_t* dest = SeqOneByteString::cast(*result)->GetChars(); |
799 String::WriteToFlat(*source_, dest, beg_pos, position_); | 797 String::WriteToFlat(*source_, dest, beg_pos, position_); |
800 | 798 |
801 ASSERT_EQ('"', c0_); | 799 ASSERT_EQ('"', c0_); |
802 // Advance past the last '"'. | 800 // Advance past the last '"'. |
803 AdvanceSkipWhitespace(); | 801 AdvanceSkipWhitespace(); |
804 return result; | 802 return result; |
805 } | 803 } |
806 | 804 |
807 } } // namespace v8::internal | 805 } } // namespace v8::internal |
808 | 806 |
809 #endif // V8_JSON_PARSER_H_ | 807 #endif // V8_JSON_PARSER_H_ |
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