Method putUTF8

src/jvm/clojure/asm/ByteVector.java:242–269

Puts an UTF8 string into this byte vector. The byte vector is automatically enlarged if necessary. @param stringValue a String whose UTF8 encoded length must be less than 65536. @return this byte vector.

(final String stringValue)

   * @return this byte vector.
   */
  public ByteVector putUTF8(final String stringValue) {
    int charLength = stringValue.length();
    if (charLength > 65535) {
      throw new IllegalArgumentException();
    }
    int currentLength = length;
    if (currentLength + 2 + charLength > data.length) {
      enlarge(2 + charLength);
    }
    byte[] currentData = data;
    // Optimistic algorithm: instead of computing the byte length and then serializing the string
    // (which requires two loops), we assume the byte length is equal to char length (which is the
    // most frequent case), and we start serializing the string right away. During the
    // serialization, if we find that this assumption is wrong, we continue with the general method.
    currentData[currentLength++] = (byte) (charLength >>> 8);
    currentData[currentLength++] = (byte) charLength;
    for (int i = 0; i < charLength; ++i) {
      char charValue = stringValue.charAt(i);
      if (charValue >= '\u0001' && charValue <= '\u007F') {
        currentData[currentLength++] = (byte) charValue;
      } else {
        length = currentLength;
        return encodeUTF8(stringValue, i, 65535);
      }
    }
    length = currentLength;
    return this;
  }

  /**
   * Puts an UTF8 string into this byte vector. The byte vector is automatically enlarged if