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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 // 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 // Features shared by parsing and pre-parsing scanners. | 5 // Features shared by parsing and pre-parsing scanners. |
6 | 6 |
7 #ifndef V8_SCANNER_H_ | 7 #ifndef V8_SCANNER_H_ |
8 #define V8_SCANNER_H_ | 8 #define V8_SCANNER_H_ |
9 | 9 |
10 #include "src/allocation.h" | 10 #include "src/allocation.h" |
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630 | 630 |
631 Token::Value ScanString(); | 631 Token::Value ScanString(); |
632 | 632 |
633 // Scans an escape-sequence which is part of a string and adds the | 633 // Scans an escape-sequence which is part of a string and adds the |
634 // decoded character to the current literal. Returns true if a pattern | 634 // decoded character to the current literal. Returns true if a pattern |
635 // is scanned. | 635 // is scanned. |
636 bool ScanEscape(); | 636 bool ScanEscape(); |
637 // Decodes a Unicode escape-sequence which is part of an identifier. | 637 // Decodes a Unicode escape-sequence which is part of an identifier. |
638 // If the escape sequence cannot be decoded the result is kBadChar. | 638 // If the escape sequence cannot be decoded the result is kBadChar. |
639 uc32 ScanIdentifierUnicodeEscape(); | 639 uc32 ScanIdentifierUnicodeEscape(); |
640 // Scans a Unicode escape-sequence and adds its characters, | |
641 // uninterpreted, to the current literal. Used for parsing RegExp | |
642 // flags. | |
643 bool ScanLiteralUnicodeEscape(); | |
644 | 640 |
645 // Return the current source position. | 641 // Return the current source position. |
646 int source_pos() { | 642 int source_pos() { |
647 return source_->pos() - kCharacterLookaheadBufferSize; | 643 return source_->pos() - kCharacterLookaheadBufferSize; |
648 } | 644 } |
649 | 645 |
650 UnicodeCache* unicode_cache_; | 646 UnicodeCache* unicode_cache_; |
651 | 647 |
652 // Buffers collecting literal strings, numbers, etc. | 648 // Buffers collecting literal strings, numbers, etc. |
653 LiteralBuffer literal_buffer1_; | 649 LiteralBuffer literal_buffer1_; |
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683 bool harmony_modules_; | 679 bool harmony_modules_; |
684 // Whether we scan 0o777 and 0b111 as numbers. | 680 // Whether we scan 0o777 and 0b111 as numbers. |
685 bool harmony_numeric_literals_; | 681 bool harmony_numeric_literals_; |
686 // Whether we scan 'class', 'extends', 'static' and 'super' as keywords. | 682 // Whether we scan 'class', 'extends', 'static' and 'super' as keywords. |
687 bool harmony_classes_; | 683 bool harmony_classes_; |
688 }; | 684 }; |
689 | 685 |
690 } } // namespace v8::internal | 686 } } // namespace v8::internal |
691 | 687 |
692 #endif // V8_SCANNER_H_ | 688 #endif // V8_SCANNER_H_ |
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