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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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8515 FlatContent GetFlatContent(); | 8515 FlatContent GetFlatContent(); |
8516 | 8516 |
8517 // Returns the parent of a sliced string or first part of a flat cons string. | 8517 // Returns the parent of a sliced string or first part of a flat cons string. |
8518 // Requires: StringShape(this).IsIndirect() && this->IsFlat() | 8518 // Requires: StringShape(this).IsIndirect() && this->IsFlat() |
8519 inline String* GetUnderlying(); | 8519 inline String* GetUnderlying(); |
8520 | 8520 |
8521 // Mark the string as an undetectable object. It only applies to | 8521 // Mark the string as an undetectable object. It only applies to |
8522 // ASCII and two byte string types. | 8522 // ASCII and two byte string types. |
8523 bool MarkAsUndetectable(); | 8523 bool MarkAsUndetectable(); |
8524 | 8524 |
| 8525 // Return a substring. |
| 8526 MUST_USE_RESULT MaybeObject* SubString(int from, |
| 8527 int to, |
| 8528 PretenureFlag pretenure = NOT_TENURED); |
| 8529 |
8525 // String equality operations. | 8530 // String equality operations. |
8526 inline bool Equals(String* other); | 8531 inline bool Equals(String* other); |
8527 bool IsUtf8EqualTo(Vector<const char> str, bool allow_prefix_match = false); | 8532 bool IsUtf8EqualTo(Vector<const char> str, bool allow_prefix_match = false); |
8528 bool IsOneByteEqualTo(Vector<const uint8_t> str); | 8533 bool IsOneByteEqualTo(Vector<const uint8_t> str); |
8529 bool IsTwoByteEqualTo(Vector<const uc16> str); | 8534 bool IsTwoByteEqualTo(Vector<const uc16> str); |
8530 | 8535 |
8531 // Return a UTF8 representation of the string. The string is null | 8536 // Return a UTF8 representation of the string. The string is null |
8532 // terminated but may optionally contain nulls. Length is returned | 8537 // terminated but may optionally contain nulls. Length is returned |
8533 // in length_output if length_output is not a null pointer The string | 8538 // in length_output if length_output is not a null pointer The string |
8534 // should be nearly flat, otherwise the performance of this method may | 8539 // should be nearly flat, otherwise the performance of this method may |
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10476 } else { | 10481 } else { |
10477 value &= ~(1 << bit_position); | 10482 value &= ~(1 << bit_position); |
10478 } | 10483 } |
10479 return value; | 10484 return value; |
10480 } | 10485 } |
10481 }; | 10486 }; |
10482 | 10487 |
10483 } } // namespace v8::internal | 10488 } } // namespace v8::internal |
10484 | 10489 |
10485 #endif // V8_OBJECTS_H_ | 10490 #endif // V8_OBJECTS_H_ |
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