private synchronized void buildArrayList()

in src/main/java/com/amazon/redshift/jdbc/RedshiftArray.java [423:540]
80 lines of code
33 McCabe index (conditional complexity)

  private synchronized void buildArrayList() throws SQLException {
    if (arrayList != null) {
      return;
    }

    arrayList = new RsArrayList();

    char delim = connection.getTypeInfo().getArrayDelimiter(oid);

    if (fieldString != null) {

      char[] chars = fieldString.toCharArray();
      StringBuilder buffer = null;
      boolean insideString = false;
      boolean wasInsideString = false; // needed for checking if NULL
      // value occurred
      List<RsArrayList> dims = new ArrayList<RsArrayList>(); // array dimension arrays
      RsArrayList curArray = arrayList; // currently processed array

      // Starting with 8.0 non-standard (beginning index
      // isn't 1) bounds the dimensions are returned in the
      // data formatted like so "[0:3]={0,1,2,3,4}".
      // Older versions simply do not return the bounds.
      //
      // Right now we ignore these bounds, but we could
      // consider allowing these index values to be used
      // even though the JDBC spec says 1 is the first
      // index. I'm not sure what a client would like
      // to see, so we just retain the old behavior.
      int startOffset = 0;
      {
        if (chars[0] == '[') {
          while (chars[startOffset] != '=') {
            startOffset++;
          }
          startOffset++; // skip =
        }
      }

      for (int i = startOffset; i < chars.length; i++) {

        // escape character that we need to skip
        if (chars[i] == '\\') {
          i++;
        } else if (!insideString && chars[i] == '{') {
          // subarray start
          if (dims.isEmpty()) {
            dims.add(arrayList);
          } else {
            RsArrayList a = new RsArrayList();
            RsArrayList p = dims.get(dims.size() - 1);
            p.add(a);
            dims.add(a);
          }
          curArray = dims.get(dims.size() - 1);

          // number of dimensions
          {
            for (int t = i + 1; t < chars.length; t++) {
              if (Character.isWhitespace(chars[t])) {
                continue;
              } else if (chars[t] == '{') {
                curArray.dimensionsCount++;
              } else {
                break;
              }
            }
          }

          buffer = new StringBuilder();
          continue;
        } else if (chars[i] == '"') {
          // quoted element
          insideString = !insideString;
          wasInsideString = true;
          continue;
        } else if (!insideString && Character.isWhitespace(chars[i])) {
          // white space
          continue;
        } else if ((!insideString && (chars[i] == delim || chars[i] == '}'))
            || i == chars.length - 1) {
          // array end or element end
          // when character that is a part of array element
          if (chars[i] != '"' && chars[i] != '}' && chars[i] != delim && buffer != null) {
            buffer.append(chars[i]);
          }

          String b = buffer == null ? null : buffer.toString();

          // add element to current array
          if (b != null && (!b.isEmpty() || wasInsideString)) {
            curArray.add(!wasInsideString && b.equals("NULL") ? null : b);
          }

          wasInsideString = false;
          buffer = new StringBuilder();

          // when end of an array
          if (chars[i] == '}') {
            dims.remove(dims.size() - 1);

            // when multi-dimension
            if (!dims.isEmpty()) {
              curArray = dims.get(dims.size() - 1);
            }

            buffer = null;
          }

          continue;
        }

        if (buffer != null) {
          buffer.append(chars[i]);
        }
      }
    }
  }