public static boolean canAggregateSemiColon()

in src/main/java/org/mariadb/jdbc/internal/util/dao/ClientPrepareResult.java [230:329]
89 lines of code
42 McCabe index (conditional complexity)

  public static boolean canAggregateSemiColon(String queryString, boolean noBackslashEscapes) {

    LexState state = LexState.Normal;
    char lastChar = '\0';

    boolean singleQuotes = false;
    boolean endingSemicolon = false;
    char[] query = queryString.toCharArray();

    for (char car : query) {

      if (state == LexState.Escape
          && !((car == '\'' && singleQuotes) || (car == '"' && !singleQuotes))) {
        state = LexState.String;
        lastChar = car;
        continue;
      }

      switch (car) {
        case '*':
          if (state == LexState.Normal && lastChar == '/') {
            state = LexState.SlashStarComment;
          }
          break;

        case '/':
          if (state == LexState.SlashStarComment && lastChar == '*') {
            state = LexState.Normal;
          }
          break;

        case '#':
          if (state == LexState.Normal) {
            state = LexState.EOLComment;
          }
          break;

        case '-':
          if (state == LexState.Normal && lastChar == '-') {
            state = LexState.EOLComment;
          }
          break;
        case ';':
          if (state == LexState.Normal) {
            endingSemicolon = true;
          }
          break;
        case '\n':
          if (state == LexState.EOLComment) {
            state = LexState.Normal;
          }
          break;
        case '"':
          if (state == LexState.Normal) {
            state = LexState.String;
            singleQuotes = false;
          } else if (state == LexState.String && !singleQuotes) {
            state = LexState.Normal;
          } else if (state == LexState.Escape && !singleQuotes) {
            state = LexState.String;
          }
          break;

        case '\'':
          if (state == LexState.Normal) {
            state = LexState.String;
            singleQuotes = true;
          } else if (state == LexState.String && singleQuotes) {
            state = LexState.Normal;
          } else if (state == LexState.Escape && singleQuotes) {
            state = LexState.String;
          }
          break;

        case '\\':
          if (noBackslashEscapes) {
            break;
          }
          if (state == LexState.String) {
            state = LexState.Escape;
          }
          break;
        case '`':
          if (state == LexState.Backtick) {
            state = LexState.Normal;
          } else if (state == LexState.Normal) {
            state = LexState.Backtick;
          }
          break;
        default:
          // multiple queries
          if (state == LexState.Normal && endingSemicolon && ((byte) car >= 40)) {
            endingSemicolon = false;
          }
          break;
      }
      lastChar = car;
    }
    return state != LexState.EOLComment && !endingSemicolon;
  }