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/*
 * CREDIT SUISSE IS WILLING TO LICENSE THIS SPECIFICATION TO YOU ONLY UPON THE
 * CONDITION THAT YOU ACCEPT ALL OF THE TERMS CONTAINED IN THIS AGREEMENT.
 * PLEASE READ THE TERMS AND CONDITIONS OF THIS AGREEMENT CAREFULLY. BY
 * DOWNLOADING THIS SPECIFICATION, YOU ACCEPT THE TERMS AND CONDITIONS OF THE
 * AGREEMENT. IF YOU ARE NOT WILLING TO BE BOUND BY IT, SELECT THE "DECLINE"
 * BUTTON AT THE BOTTOM OF THIS PAGE. Specification: JSR-354 Money and Currency
 * API ("Specification") Copyright (c) 2012-2013, Credit Suisse All rights
 * reserved.
 */
package javax.money.format;

import java.util.Objects;

import javax.money.MonetaryException;

/**
 * Signals that an error has been reached unexpectedly while parsing.
 * 
 * @author Werner Keil
 */
public class MonetaryParseException extends MonetaryException {

	/**
	 * serialVersionUID.
	 */
	private static final long serialVersionUID = -2855079387296896628L;

	/**
	 * The zero-based character offset into the string being parsed at which the
	 * error was found during parsing.
	 * 
	 * @serial
	 */
	private int errorIndex;

	/** The original input data. */
	private CharSequence data;

	/**
	 * Constructs a MonetaryParseException with the specified detail message,
	 * parsed text and index. A detail message is a String that describes this
	 * particular exception.
	 * 
	 * @param message
	 *            the detail message
	 * @param parsedData
	 *            the parsed text, should not be null
	 * @param errorIndex
	 *            the position where the error is found while parsing.
	 */
	public MonetaryParseException(String message, CharSequence parsedData,
			int errorIndex) {
		super(message);
        if(errorIndex > parsedData.length()){
            throw new IllegalArgumentException("Invalid error index > input.length");
        }
		this.data = parsedData;
		this.errorIndex = errorIndex;
	}

	/**
	 * Constructs a MonetaryParseException with the parsed text and offset. A
	 * detail message is a String that describes this particular exception.
	 * 
	 * @param parsedData
	 *            the parsed text, should not be null
	 * @param errorIndex
	 *            the position where the error is found while parsing.
	 */
	public MonetaryParseException(CharSequence parsedData,
			int errorIndex) {
		super("Parse Error");
        if(errorIndex > parsedData.length()){
            throw new IllegalArgumentException("Invalid error index > input.length");
        }
		this.data = parsedData;
		this.errorIndex = errorIndex;
	}

	/**
	 * Returns the index where the error was found.
	 * 
	 * @return the index where the error was found
	 */
	public int getErrorIndex() {
		return errorIndex;
	}

	/**
	 * Returns the string that was being parsed.
	 * 
	 * @return the parsed input string, or {@code null}, if {@code null} was passed as
	 *         input.
	 */
	public String getInput() {
		
		if (Objects.isNull(data)) {
			return null;
		}
		return data.toString();
	}

}