Method back

core/src/processing/data/JSONTokener.java:93–101

Back up one character. This provides a sort of lookahead capability, so that you can test for a digit or letter before attempting to parse the next number or identifier.

()

   * the next number or identifier.
   */
  public void back() {
    if (this.usePrevious || this.index <= 0) {
      throw new RuntimeException("Stepping back two steps is not supported");
    }
    this.index -= 1;
    this.character -= 1;
    this.usePrevious = true;
    this.eof = false;
  }


  /**