    001/* ============
    002 * Orson Charts
    003 * ============
    004 *
    005 * (C)opyright 2013, 2014, by Object Refinery Limited.
    006 *
    007 * http://www.object-refinery.com/orsoncharts/index.html
    008 *
    009 * JSON.simple
    010 * -----------
    011 * The code in this file originates from the JSON.simple project by
    012 * FangYidong<fangyidong@yahoo.com.cn>:
    013 *
    014 *     https://code.google.com/p/json-simple/
    015 *
    016 * which is licensed under the Apache Software License version 2.0.
    017 *
    018 * It has been modified locally and repackaged under
    019 * com.orsoncharts.util.json.* to avoid conflicts with any other version that
    020 * may be present on the classpath.
    021 *
    022 */
    023
    024package com.orsoncharts.util.json.parser;
    025
    026/**
    027 * ParseException explains why and where the error occurs in source JSON text.
    028 *
    029 */
    030public class ParseException extends Exception {
    031
    032    private static final long serialVersionUID = -7880698968187728548L;
    033
    034    public static final int ERROR_UNEXPECTED_CHAR = 0;
    035    public static final int ERROR_UNEXPECTED_TOKEN = 1;
    036    public static final int ERROR_UNEXPECTED_EXCEPTION = 2;
    037
    038    private int errorType;
    039    private Object unexpectedObject;
    040    private int position;
    041
    042    public ParseException(int errorType){
    043        this(-1, errorType, null);
    044    }
    045
    046    public ParseException(int errorType, Object unexpectedObject){
    047        this(-1, errorType, unexpectedObject);
    048    }
    049
    050    public ParseException(int position, int errorType,
    051            Object unexpectedObject) {
    052        this.position = position;
    053        this.errorType = errorType;
    054        this.unexpectedObject = unexpectedObject;
    055    }
    056
    057    public int getErrorType() {
    058        return errorType;
    059    }
    060
    061    public void setErrorType(int errorType) {
    062        this.errorType = errorType;
    063    }
    064
    065    /**
    066     * @see com.orsoncharts.util.json.parser.JSONParser#getPosition()
    067     *
    068     * @return The character position (starting with 0) of the input where the
    069     * error occurs.
    070     */
    071    public int getPosition() {
    072        return position;
    073    }
    074
    075    public void setPosition(int position) {
    076        this.position = position;
    077    }
    078
    079    /**
    080     * @see com.orsoncharts.util.json.parser.Yytoken
    081     *
    082     * @return One of the following base on the value of errorType:
    083     *         ERROR_UNEXPECTED_CHAR        java.lang.Character
    084     *         ERROR_UNEXPECTED_TOKEN       com.orsoncharts.util.json.simple.parser.Yytoken
    085     *         ERROR_UNEXPECTED_EXCEPTION   java.lang.Exception
    086     */
    087    public Object getUnexpectedObject() {
    088        return unexpectedObject;
    089    }
    090
    091    public void setUnexpectedObject(Object unexpectedObject) {
    092        this.unexpectedObject = unexpectedObject;
    093    }
    094
    095    @Override
    096    public String toString(){
    097        StringBuilder sb = new StringBuilder();
    098
    099        switch(errorType) {
    100        case ERROR_UNEXPECTED_CHAR:
    101            sb.append("Unexpected character (").append(unexpectedObject);
    102            sb.append(") at position ").append(position).append(".");
    103            break;
    104        case ERROR_UNEXPECTED_TOKEN:
    105            sb.append("Unexpected token ").append(unexpectedObject);
    106            sb.append(" at position ").append(position).append(".");
    107            break;
    108        case ERROR_UNEXPECTED_EXCEPTION:
    109            sb.append("Unexpected exception at position ").append(position);
    110            sb.append(": ").append(unexpectedObject);
    111            break;
    112        default:
    113            sb.append("Unkown error at position ").append(position).append(".");
    114            break;
    115        }
    116        return sb.toString();
    117    }
    118}
    119