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