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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Copyright (c) 2018-2023 Saxonica Limited
// This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
// If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
// This Source Code Form is "Incompatible With Secondary Licenses", as defined by the Mozilla Public License, v. 2.0.
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

package net.sf.saxon.expr.sort;

import net.sf.saxon.trans.XPathException;

/**
 * A ComparisonException is a ClassCastException that
 * encapsulates an XPathException. It is used because the compareTo
 * method is defined to return ClassCastException when values are not comparable;
 * using a ClassCastException that encapsulates XPath error information enables
 * us to return the correct error code, and to distinguish dynamic errors from type errors.
 */

public class ComparisonException extends ClassCastException {

    XPathException reason;

    public ComparisonException(XPathException reason) {
        this.reason = reason;
    }

    @Override
    public String getMessage() {
        return reason.getMessage();
    }

    public XPathException getReason() {
        return reason;
    }
}