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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 #include "src/scanner.h" | 7 #include "src/scanner.h" |
8 | 8 |
9 #include <stdint.h> | 9 #include <stdint.h> |
10 | 10 |
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349 TryToParseSourceURLComment(); | 349 TryToParseSourceURLComment(); |
350 while (c0_ >= 0 && !unicode_cache_->IsLineTerminator(c0_)) { | 350 while (c0_ >= 0 && !unicode_cache_->IsLineTerminator(c0_)) { |
351 Advance(); | 351 Advance(); |
352 } | 352 } |
353 | 353 |
354 return Token::WHITESPACE; | 354 return Token::WHITESPACE; |
355 } | 355 } |
356 | 356 |
357 | 357 |
358 void Scanner::TryToParseSourceURLComment() { | 358 void Scanner::TryToParseSourceURLComment() { |
359 // Magic comments are of the form: //[#@]\s<name>=\s*<value>\s*.* and this | 359 // Magic comments are of the form: //[#]\s<name>=\s*<value>\s*.* and this |
360 // function will just return if it cannot parse a magic comment. | 360 // function will just return if it cannot parse a magic comment. |
361 if (c0_ < 0 || !unicode_cache_->IsWhiteSpace(c0_)) return; | 361 if (c0_ < 0 || !unicode_cache_->IsWhiteSpace(c0_)) return; |
362 Advance(); | 362 Advance(); |
363 LiteralBuffer name; | 363 LiteralBuffer name; |
364 while (c0_ >= 0 && !unicode_cache_->IsWhiteSpaceOrLineTerminator(c0_) && | 364 while (c0_ >= 0 && !unicode_cache_->IsWhiteSpaceOrLineTerminator(c0_) && |
365 c0_ != '=') { | 365 c0_ != '=') { |
366 name.AddChar(c0_); | 366 name.AddChar(c0_); |
367 Advance(); | 367 Advance(); |
368 } | 368 } |
369 if (!name.is_one_byte()) return; | 369 if (!name.is_one_byte()) return; |
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567 case '%': | 567 case '%': |
568 // % %= | 568 // % %= |
569 token = Select('=', Token::ASSIGN_MOD, Token::MOD); | 569 token = Select('=', Token::ASSIGN_MOD, Token::MOD); |
570 break; | 570 break; |
571 | 571 |
572 case '/': | 572 case '/': |
573 // / // /* /= | 573 // / // /* /= |
574 Advance(); | 574 Advance(); |
575 if (c0_ == '/') { | 575 if (c0_ == '/') { |
576 Advance(); | 576 Advance(); |
577 if (c0_ == '@' || c0_ == '#') { | 577 if (c0_ == '#') { |
578 Advance(); | 578 Advance(); |
579 token = SkipSourceURLComment(); | 579 token = SkipSourceURLComment(); |
580 } else { | 580 } else { |
581 PushBack(c0_); | 581 PushBack(c0_); |
582 token = SkipSingleLineComment(); | 582 token = SkipSingleLineComment(); |
583 } | 583 } |
584 } else if (c0_ == '*') { | 584 } else if (c0_ == '*') { |
585 token = SkipMultiLineComment(); | 585 token = SkipMultiLineComment(); |
586 } else if (c0_ == '=') { | 586 } else if (c0_ == '=') { |
587 token = Select(Token::ASSIGN_DIV); | 587 token = Select(Token::ASSIGN_DIV); |
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1643 backing_store_.Add(static_cast<uint8_t>((one_byte_length >> 7) | 0x80u)); | 1643 backing_store_.Add(static_cast<uint8_t>((one_byte_length >> 7) | 0x80u)); |
1644 } | 1644 } |
1645 backing_store_.Add(static_cast<uint8_t>(one_byte_length & 0x7f)); | 1645 backing_store_.Add(static_cast<uint8_t>(one_byte_length & 0x7f)); |
1646 | 1646 |
1647 backing_store_.AddBlock(bytes); | 1647 backing_store_.AddBlock(bytes); |
1648 return backing_store_.EndSequence().start(); | 1648 return backing_store_.EndSequence().start(); |
1649 } | 1649 } |
1650 | 1650 |
1651 } // namespace internal | 1651 } // namespace internal |
1652 } // namespace v8 | 1652 } // namespace v8 |
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