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Issue 6246064: Issue 117 - strict mode and future reserved words (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Address code review comments Created 9 years, 10 months ago
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1 // Copyright 2010 the V8 project authors. All rights reserved. 1 // Copyright 2010 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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557 UNMATCHABLE, 557 UNMATCHABLE,
558 INITIAL, 558 INITIAL,
559 KEYWORD_PREFIX, 559 KEYWORD_PREFIX,
560 KEYWORD_MATCHED, 560 KEYWORD_MATCHED,
561 C, 561 C,
562 CA, 562 CA,
563 CO, 563 CO,
564 CON, 564 CON,
565 D, 565 D,
566 DE, 566 DE,
567 E,
568 EX,
567 F, 569 F,
568 I, 570 I,
571 IM,
572 IMP,
569 IN, 573 IN,
570 N, 574 N,
575 P,
576 PR,
577 S,
571 T, 578 T,
572 TH, 579 TH,
573 TR, 580 TR,
574 V, 581 V,
575 W 582 W
576 }; 583 };
577 584
578 struct FirstState { 585 struct FirstState {
579 const char* keyword; 586 const char* keyword;
580 State state; 587 State state;
581 Token::Value token; 588 Token::Value token;
582 }; 589 };
583 590
584 // Range of possible first characters of a keyword. 591 // Range of possible first characters of a keyword.
585 static const unsigned int kFirstCharRangeMin = 'b'; 592 static const unsigned int kFirstCharRangeMin = 'b';
586 static const unsigned int kFirstCharRangeMax = 'w'; 593 static const unsigned int kFirstCharRangeMax = 'y';
587 static const unsigned int kFirstCharRangeLength = 594 static const unsigned int kFirstCharRangeLength =
588 kFirstCharRangeMax - kFirstCharRangeMin + 1; 595 kFirstCharRangeMax - kFirstCharRangeMin + 1;
589 // State map for first keyword character range. 596 // State map for first keyword character range.
590 static FirstState first_states_[kFirstCharRangeLength]; 597 static FirstState first_states_[kFirstCharRangeLength];
591 598
592 // If input equals keyword's character at position, continue matching keyword 599 // If input equals keyword's character at position, continue matching keyword
593 // from that position. 600 // from that position.
594 inline bool MatchKeywordStart(unibrow::uchar input, 601 inline bool MatchKeywordStart(unibrow::uchar input,
595 const char* keyword, 602 const char* keyword,
596 int position, 603 int position,
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637 // keyword with the current prefix). 644 // keyword with the current prefix).
638 const char* keyword_; 645 const char* keyword_;
639 int counter_; 646 int counter_;
640 Token::Value keyword_token_; 647 Token::Value keyword_token_;
641 }; 648 };
642 649
643 650
644 } } // namespace v8::internal 651 } } // namespace v8::internal
645 652
646 #endif // V8_SCANNER_BASE_H_ 653 #endif // V8_SCANNER_BASE_H_
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