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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 // 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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508 ++current; | 508 ++current; |
509 if (current == end || !isDigit(*current, 16) || sign != NONE) { | 509 if (current == end || !isDigit(*current, 16) || sign != NONE) { |
510 return JunkStringValue(); // "0x". | 510 return JunkStringValue(); // "0x". |
511 } | 511 } |
512 | 512 |
513 return InternalStringToIntDouble<4>(unicode_cache, | 513 return InternalStringToIntDouble<4>(unicode_cache, |
514 current, | 514 current, |
515 end, | 515 end, |
516 false, | 516 false, |
517 allow_trailing_junk); | 517 allow_trailing_junk); |
| 518 |
| 519 // It could be an explicit octal value. |
| 520 } else if ((flags & ALLOW_OCTAL) && (*current == 'o' || *current == 'O')) { |
| 521 ++current; |
| 522 if (current == end || !isDigit(*current, 8) || sign != NONE) { |
| 523 return JunkStringValue(); // "0o". |
| 524 } |
| 525 |
| 526 return InternalStringToIntDouble<3>(unicode_cache, |
| 527 current, |
| 528 end, |
| 529 false, |
| 530 allow_trailing_junk); |
| 531 |
| 532 // It could be a binary value. |
| 533 } else if ((flags & ALLOW_BINARY) && (*current == 'b' || *current == 'B')) { |
| 534 ++current; |
| 535 if (current == end || !isBinaryDigit(*current) || sign != NONE) { |
| 536 return JunkStringValue(); // "0b". |
| 537 } |
| 538 |
| 539 return InternalStringToIntDouble<1>(unicode_cache, |
| 540 current, |
| 541 end, |
| 542 false, |
| 543 allow_trailing_junk); |
518 } | 544 } |
519 | 545 |
520 // Ignore leading zeros in the integer part. | 546 // Ignore leading zeros in the integer part. |
521 while (*current == '0') { | 547 while (*current == '0') { |
522 ++current; | 548 ++current; |
523 if (current == end) return SignedZero(sign == NEGATIVE); | 549 if (current == end) return SignedZero(sign == NEGATIVE); |
524 } | 550 } |
525 } | 551 } |
526 | 552 |
527 bool octal = leading_zero && (flags & ALLOW_OCTALS) != 0; | 553 bool octal = leading_zero && (flags & ALLOW_IMPLICIT_OCTAL) != 0; |
528 | 554 |
529 // Copy significant digits of the integer part (if any) to the buffer. | 555 // Copy significant digits of the integer part (if any) to the buffer. |
530 while (*current >= '0' && *current <= '9') { | 556 while (*current >= '0' && *current <= '9') { |
531 if (significant_digits < kMaxSignificantDigits) { | 557 if (significant_digits < kMaxSignificantDigits) { |
532 ASSERT(buffer_pos < kBufferSize); | 558 ASSERT(buffer_pos < kBufferSize); |
533 buffer[buffer_pos++] = static_cast<char>(*current); | 559 buffer[buffer_pos++] = static_cast<char>(*current); |
534 significant_digits++; | 560 significant_digits++; |
535 // Will later check if it's an octal in the buffer. | 561 // Will later check if it's an octal in the buffer. |
536 } else { | 562 } else { |
537 insignificant_digits++; // Move the digit into the exponential part. | 563 insignificant_digits++; // Move the digit into the exponential part. |
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669 ASSERT(buffer_pos < kBufferSize); | 695 ASSERT(buffer_pos < kBufferSize); |
670 buffer[buffer_pos] = '\0'; | 696 buffer[buffer_pos] = '\0'; |
671 | 697 |
672 double converted = Strtod(Vector<const char>(buffer, buffer_pos), exponent); | 698 double converted = Strtod(Vector<const char>(buffer, buffer_pos), exponent); |
673 return (sign == NEGATIVE) ? -converted : converted; | 699 return (sign == NEGATIVE) ? -converted : converted; |
674 } | 700 } |
675 | 701 |
676 } } // namespace v8::internal | 702 } } // namespace v8::internal |
677 | 703 |
678 #endif // V8_CONVERSIONS_INL_H_ | 704 #endif // V8_CONVERSIONS_INL_H_ |
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