/*
 * Copyright (c) 2008, 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 com.sun.hotspot.igv.data;

/**
 *
 * @author Thomas Wuerthinger
 */
public class InputEdge {

    public enum State {

        SAME,
        NEW,
        DELETED
    }
    private char toIndex;
    private int from;
    private int to;
    private State state;

    public InputEdge(char toIndex, int from, int to) {
        this.toIndex = toIndex;
        this.from = from;
        this.to = to;
        this.state = State.SAME;
    }

    public State getState() {
        return state;
    }

    public void setState(State x) {
        this.state = x;
    }

    public char getToIndex() {
        return toIndex;
    }

    public String getName() {
        return "in" + toIndex;
    }

    public int getFrom() {
        return from;
    }

    public int getTo() {
        return to;
    }

    @Override
    public boolean equals(Object o) {
        if (o == null || !(o instanceof InputEdge)) {
            return false;
        }
        InputEdge conn2 = (InputEdge) o;
        return conn2.toIndex == toIndex && conn2.from == from && conn2.to == to;
    }

    @Override
    public String toString() {
        return "Edge from " + from + " to " + to + "(" + (int) toIndex + ") ";
    }

    @Override
    public int hashCode() {
        return (from << 20 | to << 8 | toIndex);
    }
}
