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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_PARSING_SCANNER_H_ | 7 #ifndef V8_PARSING_SCANNER_H_ |
8 #define V8_PARSING_SCANNER_H_ | 8 #define V8_PARSING_SCANNER_H_ |
9 | 9 |
10 #include "src/allocation.h" | 10 #include "src/allocation.h" |
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435 // tokens, which is what it is used for. | 435 // tokens, which is what it is used for. |
436 void SeekForward(int pos); | 436 void SeekForward(int pos); |
437 | 437 |
438 // Returns true if there was a line terminator before the peek'ed token, | 438 // Returns true if there was a line terminator before the peek'ed token, |
439 // possibly inside a multi-line comment. | 439 // possibly inside a multi-line comment. |
440 bool HasAnyLineTerminatorBeforeNext() const { | 440 bool HasAnyLineTerminatorBeforeNext() const { |
441 return has_line_terminator_before_next_ || | 441 return has_line_terminator_before_next_ || |
442 has_multiline_comment_before_next_; | 442 has_multiline_comment_before_next_; |
443 } | 443 } |
444 | 444 |
| 445 bool HasAnyLineTerminatorAfterNext() { |
| 446 Token::Value ensure_next_next = PeekAhead(); |
| 447 USE(ensure_next_next); |
| 448 return has_line_terminator_after_next_; |
| 449 } |
| 450 |
445 // Scans the input as a regular expression pattern, previous | 451 // Scans the input as a regular expression pattern, previous |
446 // character(s) must be /(=). Returns true if a pattern is scanned. | 452 // character(s) must be /(=). Returns true if a pattern is scanned. |
447 bool ScanRegExpPattern(bool seen_equal); | 453 bool ScanRegExpPattern(bool seen_equal); |
448 // Scans the input as regular expression flags. Returns the flags on success. | 454 // Scans the input as regular expression flags. Returns the flags on success. |
449 Maybe<RegExp::Flags> ScanRegExpFlags(); | 455 Maybe<RegExp::Flags> ScanRegExpFlags(); |
450 | 456 |
451 // Scans the input as a template literal | 457 // Scans the input as a template literal |
452 Token::Value ScanTemplateStart(); | 458 Token::Value ScanTemplateStart(); |
453 Token::Value ScanTemplateContinuation(); | 459 Token::Value ScanTemplateContinuation(); |
454 | 460 |
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779 // One Unicode character look-ahead; c0_ < 0 at the end of the input. | 785 // One Unicode character look-ahead; c0_ < 0 at the end of the input. |
780 uc32 c0_; | 786 uc32 c0_; |
781 | 787 |
782 // Whether there is a line terminator whitespace character after | 788 // Whether there is a line terminator whitespace character after |
783 // the current token, and before the next. Does not count newlines | 789 // the current token, and before the next. Does not count newlines |
784 // inside multiline comments. | 790 // inside multiline comments. |
785 bool has_line_terminator_before_next_; | 791 bool has_line_terminator_before_next_; |
786 // Whether there is a multi-line comment that contains a | 792 // Whether there is a multi-line comment that contains a |
787 // line-terminator after the current token, and before the next. | 793 // line-terminator after the current token, and before the next. |
788 bool has_multiline_comment_before_next_; | 794 bool has_multiline_comment_before_next_; |
| 795 bool has_line_terminator_after_next_; |
789 | 796 |
790 // Whether this scanner encountered an HTML comment. | 797 // Whether this scanner encountered an HTML comment. |
791 bool found_html_comment_; | 798 bool found_html_comment_; |
792 | 799 |
793 bool allow_harmony_exponentiation_operator_; | 800 bool allow_harmony_exponentiation_operator_; |
794 | 801 |
795 MessageTemplate::Template scanner_error_; | 802 MessageTemplate::Template scanner_error_; |
796 Location scanner_error_location_; | 803 Location scanner_error_location_; |
797 }; | 804 }; |
798 | 805 |
799 } // namespace internal | 806 } // namespace internal |
800 } // namespace v8 | 807 } // namespace v8 |
801 | 808 |
802 #endif // V8_PARSING_SCANNER_H_ | 809 #endif // V8_PARSING_SCANNER_H_ |
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