package org.relaxng.datatype;

/**
 * Signals Datatype related exceptions.
 *
 * @author <a href="mailto:jjc@jclark.com">James Clark</a>
 * @author <a href="mailto:kohsuke.kawaguchi@sun.com">Kohsuke KAWAGUCHI</a>
 */
public class DatatypeException extends Exception {

        public DatatypeException( int index, String msg ) {
                super(msg);
                this.index = index;
        }
        public DatatypeException( String msg ) {
                this(UNKNOWN,msg);
        }
        /**
         * A constructor for those datatype libraries which don't support any
         * diagnostic information at all.
         */
        public DatatypeException() {
                this(UNKNOWN,null);
        }


        private final int index;

        public static final int UNKNOWN = -1;

        /**
         * Gets the index of the content where the error occured.
         * UNKNOWN can be returned to indicate that no index information
         * is available.
         */
        public int getIndex() {
                return index;
        }
}