code: public JSONArray toJSONArray() {
  		JSONArray jsonArray = new JSONArray();
  		if (this.nextClean() != '[') {
  			throw this.syntaxError("A JSONArray text must start with '['");
  		}
  		if (this.nextClean() != ']') {
  			this.back();
  			while (true) {
  				if (this.nextClean() == ',') {
  					this.back();
  					jsonArray.add(JSONNull.NULL);
  				} else {
  					this.back();
  					jsonArray.add(this.nextValue());
  				}
  				switch (this.nextClean()) {
  				case ',':
  					if (this.nextClean() == ']') {
  						return jsonArray;
  					}
  					this.back();
  					break;
  				case ']':
  					return jsonArray;
  				default:
  					throw this.syntaxError("Expected a ',' or ']'");
  				}
  			}
  		}
  		return jsonArray;
  	}
docs: 转为 {@link JSONArray}
  
  @return {@link JSONArray}