/*
 * Copyright (c) 1996, 2014, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */
package org.openjdk.asmtools.jasm;

/**
 *
 */
class Argument {

    static final int NotSet = -1;
    int arg;

    Argument() {
        arg = NotSet;
    }

    Argument(int arg) {
        this.arg = arg;
    }

    public int hashCode() {
        return arg;
    }

    /**
     * Compares this object to the specified object.
     *
     * @param obj the object to compare with
     * @return true if the objects are the same; false otherwise.
     */
    public boolean equals(Object obj) {
        throw new Parser.CompilerError("ConstCell.equals");
    }

    boolean isSet() {
        return arg != NotSet;
    }
}
