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Issue 6066010: Merge 6095:6198 from bleeding_edge to experimental/gc. (Closed) Base URL: http://v8.googlecode.com/svn/branches/experimental/gc/
Patch Set: Created 9 years, 11 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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317 complete_ = true; 317 complete_ = true;
318 } 318 }
319 319
320 320
321 // ---------------------------------------------------------------------------- 321 // ----------------------------------------------------------------------------
322 // V8JavaScriptScanner 322 // V8JavaScriptScanner
323 323
324 V8JavaScriptScanner::V8JavaScriptScanner() : JavaScriptScanner() { } 324 V8JavaScriptScanner::V8JavaScriptScanner() : JavaScriptScanner() { }
325 325
326 326
327 void V8JavaScriptScanner::Initialize(UC16CharacterStream* source, 327 void V8JavaScriptScanner::Initialize(UC16CharacterStream* source) {
328 int literal_flags) {
329 source_ = source; 328 source_ = source;
330 literal_flags_ = literal_flags | kLiteralIdentifier;
331 // Need to capture identifiers in order to recognize "get" and "set" 329 // Need to capture identifiers in order to recognize "get" and "set"
332 // in object literals. 330 // in object literals.
333 Init(); 331 Init();
334 // Skip initial whitespace allowing HTML comment ends just like 332 // Skip initial whitespace allowing HTML comment ends just like
335 // after a newline and scan first token. 333 // after a newline and scan first token.
336 has_line_terminator_before_next_ = true; 334 has_line_terminator_before_next_ = true;
337 SkipWhiteSpace(); 335 SkipWhiteSpace();
338 Scan(); 336 Scan();
339 } 337 }
340 338
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370 int start_position = source_pos(); 368 int start_position = source_pos();
371 // JSON WhiteSpace is tab, carrige-return, newline and space. 369 // JSON WhiteSpace is tab, carrige-return, newline and space.
372 while (c0_ == ' ' || c0_ == '\n' || c0_ == '\r' || c0_ == '\t') { 370 while (c0_ == ' ' || c0_ == '\n' || c0_ == '\r' || c0_ == '\t') {
373 Advance(); 371 Advance();
374 } 372 }
375 return source_pos() != start_position; 373 return source_pos() != start_position;
376 } 374 }
377 375
378 376
379 void JsonScanner::ScanJson() { 377 void JsonScanner::ScanJson() {
380 next_.literal_chars = Vector<const char>(); 378 next_.literal_chars = NULL;
381 Token::Value token; 379 Token::Value token;
382 do { 380 do {
383 // Remember the position of the next token 381 // Remember the position of the next token
384 next_.location.beg_pos = source_pos(); 382 next_.location.beg_pos = source_pos();
385 switch (c0_) { 383 switch (c0_) {
386 case '\t': 384 case '\t':
387 case '\r': 385 case '\r':
388 case '\n': 386 case '\n':
389 case ' ': 387 case ' ':
390 Advance(); 388 Advance();
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452 450
453 next_.location.end_pos = source_pos(); 451 next_.location.end_pos = source_pos();
454 next_.token = token; 452 next_.token = token;
455 } 453 }
456 454
457 455
458 Token::Value JsonScanner::ScanJsonString() { 456 Token::Value JsonScanner::ScanJsonString() {
459 ASSERT_EQ('"', c0_); 457 ASSERT_EQ('"', c0_);
460 Advance(); 458 Advance();
461 LiteralScope literal(this); 459 LiteralScope literal(this);
462 while (c0_ != '"' && c0_ > 0) { 460 while (c0_ != '"') {
463 // Check for control character (0x00-0x1f) or unterminated string (<0). 461 // Check for control character (0x00-0x1f) or unterminated string (<0).
464 if (c0_ < 0x20) return Token::ILLEGAL; 462 if (c0_ < 0x20) return Token::ILLEGAL;
465 if (c0_ != '\\') { 463 if (c0_ != '\\') {
466 AddLiteralCharAdvance(); 464 AddLiteralCharAdvance();
467 } else { 465 } else {
468 Advance(); 466 Advance();
469 switch (c0_) { 467 switch (c0_) {
470 case '"': 468 case '"':
471 case '\\': 469 case '\\':
472 case '/': 470 case '/':
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499 } 497 }
500 AddLiteralChar(value); 498 AddLiteralChar(value);
501 break; 499 break;
502 } 500 }
503 default: 501 default:
504 return Token::ILLEGAL; 502 return Token::ILLEGAL;
505 } 503 }
506 Advance(); 504 Advance();
507 } 505 }
508 } 506 }
509 if (c0_ != '"') {
510 return Token::ILLEGAL;
511 }
512 literal.Complete(); 507 literal.Complete();
513 Advance(); 508 Advance();
514 return Token::STRING; 509 return Token::STRING;
515 } 510 }
516 511
517 512
518 Token::Value JsonScanner::ScanJsonNumber() { 513 Token::Value JsonScanner::ScanJsonNumber() {
519 LiteralScope literal(this); 514 LiteralScope literal(this);
520 if (c0_ == '-') AddLiteralCharAdvance(); 515 if (c0_ == '-') AddLiteralCharAdvance();
521 if (c0_ == '0') { 516 if (c0_ == '0') {
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558 text++; 553 text++;
559 } 554 }
560 if (ScannerConstants::kIsIdentifierPart.get(c0_)) return Token::ILLEGAL; 555 if (ScannerConstants::kIsIdentifierPart.get(c0_)) return Token::ILLEGAL;
561 literal.Complete(); 556 literal.Complete();
562 return token; 557 return token;
563 } 558 }
564 559
565 560
566 561
567 } } // namespace v8::internal 562 } } // namespace v8::internal
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