Mercurial > hg > truffle

annotate visualizer/HierarchicalLayout/src/com/sun/hotspot/igv/hierarchicallayout/Edge.java @ 7291:a748e4d44694

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Truffle API to specify type-specalized Node classes; annotation processor for automatic code generation of the type-specialized Node classes during the build process
author Christian Humer <christian.humer@gmail.com>
date Fri, 21 Dec 2012 10:44:31 -0800
parents 015fb895586b
children
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1 /*
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2 * Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24 package com.sun.hotspot.igv.hierarchicallayout;
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25
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26 /**
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27 *
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28 * @author Thomas Wuerthinger
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29 */
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30 public class Edge<N, E> {
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31
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32 private E data;
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33 private Node<N, E> source;
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34 private Node<N, E> dest;
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35
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36 protected Edge(Graph<N, E> graph, Node<N, E> source, Node<N, E> dest, E data) {
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37 setData(data);
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38 this.source = source;
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39 this.dest = dest;
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40 assert source != null;
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41 assert dest != null;
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42 assert source.getGraph() == dest.getGraph();
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43 assert source.getGraph() != null;
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44 assert dest.getGraph() != null;
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45 }
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46
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47 public Node<N, E> getSource() {
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48 return source;
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49 }
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50
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51 public Node<N, E> getDest() {
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52 return dest;
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53 }
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54
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55 public E getData() {
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56 return data;
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57 }
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58
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59 public void setData(E e) {
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60 data = e;
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61 }
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62
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63 public void remove() {
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64 source.getGraph().removeEdge(this, null);
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65 }
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66
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67 public boolean isSelfLoop() {
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68 return source == dest;
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69 }
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70
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71 public void reverse() {
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72
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73 // Remove from current source / dest
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74 source.removeOutEdge(this);
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75 dest.removeInEdge(this);
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76
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77 Node<N, E> tmp = source;
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78 source = dest;
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79 dest = tmp;
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80
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81 // Add to new source / dest
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82 source.addOutEdge(this);
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83 dest.addInEdge(this);
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84 }
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85
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86 @Override
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87 public String toString() {
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88 return "Edge (" + source + " -- " + dest + "): " + data;
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89 }
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90 }