Method readOctalEscape

src/parser/token-reader.ts:496–514

(firstDigit: number)

  }

  private readOctalEscape(firstDigit: number): number {
    let value = firstDigit - DIGIT_0;
    let digits = 1;

    while (digits < 3) {
      const byte = this.scanner.peek();

      if (byte < DIGIT_0 || byte > 0x37) {
        break;
      }

      this.scanner.advance();

      value = (value << 3) | (byte - DIGIT_0);
      digits++;
    }

    return value & SINGLE_BYTE_MASK;
  }

  private readAngleBracket(position: number): StringToken | DelimiterToken {
    this.scanner.advance(); // Skip first <