1/*
2 * Copyright (c) 2008, 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24package com.sun.hotspot.igv.data;
25
26/**
27 *
28 * @author Thomas Wuerthinger
29 */
30public class InputBlockEdge {
31
32    public enum State {
33        SAME,
34        NEW,
35        DELETED
36    }
37
38    private InputBlock from;
39    private InputBlock to;
40    private State state = State.SAME;
41
42    public InputBlockEdge(InputBlock from, InputBlock to) {
43        assert from != null;
44        assert to != null;
45        this.from = from;
46        this.to = to;
47    }
48
49    public InputBlock getFrom() {
50        return from;
51    }
52
53    public InputBlock getTo() {
54        return to;
55    }
56
57    public State getState() {
58        return state;
59    }
60
61    public void setState(State state) {
62        this.state = state;
63    }
64
65    @Override
66    public boolean equals(Object obj) {
67        if (obj != null && obj instanceof InputBlockEdge) {
68            InputBlockEdge e = (InputBlockEdge) obj;
69            return e.from.equals(from) && e.to.equals(to);
70        }
71        return false;
72    }
73
74    @Override
75    public int hashCode() {
76        int hash = from.hashCode();
77        hash = 59 * hash + to.hashCode();
78        return hash;
79    }
80}
81