/*

 * Copyright (c) 2011, 2015, 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 jdk.vm.ci.code;

import jdk.vm.ci.meta.AllocatableValue;

import jdk.vm.ci.meta.JavaValue;

import jdk.vm.ci.meta.Value;

/**

 * Represents lock information in the debug information.

 */

public final class StackLockValue implements JavaValue {

    private JavaValue owner;

    private AllocatableValue slot;

    private final boolean eliminated;

    public StackLockValue(JavaValue object, AllocatableValue slot, boolean eliminated) {

        this.owner = object;

        this.slot = slot;

        this.eliminated = eliminated;

    }

    public JavaValue getOwner() {

        return owner;

    }

    public void setOwner(JavaValue newOwner) {

        this.owner = newOwner;

    }

    public Value getSlot() {

        return slot;

    }

    public boolean isEliminated() {

        return eliminated;

    }

    @Override

    public String toString() {

        return "monitor[" + owner + (slot != null ? ", " + slot : "") + (eliminated ? ", eliminated" : "") + "]";

    }

    @Override

    public int hashCode() {

        final int prime = 43;

        int result = super.hashCode();

        result = prime * result + (eliminated ? 1231 : 1237);

        result = prime * result + owner.hashCode();

        result = prime * result + slot.hashCode();

        return result;

    }

    @Override

    public boolean equals(Object obj) {

        if (obj instanceof StackLockValue) {

            StackLockValue other = (StackLockValue) obj;

            return super.equals(obj) && eliminated == other.eliminated && owner.equals(other.owner) && slot.equals(other.slot);

        }

        return false;

    }

    public void setSlot(AllocatableValue stackSlot) {

        slot = stackSlot;

    }

}