package javolution37.javolution.xml.pull;

/**
 * This exception is thrown to signal XML Pull Parser related faults.
 *
 * @author Aleksander Slominski
 */
public class XmlPullParserException extends Exception {
    
    protected Throwable detail;

    protected int row = -1;

    protected int column = -1;

    public XmlPullParserException(String s) {
        super(s);
    }

    public XmlPullParserException(String msg, XmlPullParser parser,
            Throwable chain) {
        super((msg == null ? "" : msg + " ")
                + (parser == null ? "" : "(position:"
                        + parser.getPositionDescription() + ") ")
                + (chain == null ? "" : "caused by: " + chain));

        if (parser != null) {
            this.row = parser.getLineNumber();
            this.column = parser.getColumnNumber();
        }
        this.detail = chain;
    }

    public Throwable getDetail() {
        return detail;
    }

    public int getLineNumber() {
        return row;
    }

    public int getColumnNumber() {
        return column;
    }

    //NOTE: code that prints this and detail is difficult in J2ME
    public void printStackTrace() {
        if (detail == null) {
            super.printStackTrace();
        } else {
            synchronized (System.err) {
                System.err.println(super.getMessage()
                        + "; nested exception is:");
                detail.printStackTrace();
            }
        }
    }

    private static final long serialVersionUID = 1L;
}