| /* |
| * Copyright (c) 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.graalvm.compiler.graph; |
| |
| import org.graalvm.compiler.nodeinfo.InputType; |
| |
| /** |
| * Describes an edge slot for a {@link NodeClass}. |
| */ |
| public final class Position { |
| |
| /** |
| * The edges in which this position lies. |
| */ |
| private final Edges edges; |
| |
| /** |
| * Index of the {@link Node} or {@link NodeList} field denoted by this position. |
| */ |
| private final int index; |
| |
| /** |
| * Index within a {@link NodeList} if {@link #index} denotes a {@link NodeList} field otherwise |
| * {@link Node#NOT_ITERABLE}. |
| */ |
| private final int subIndex; |
| |
| public Position(Edges edges, int index, int subIndex) { |
| this.edges = edges; |
| this.index = index; |
| this.subIndex = subIndex; |
| } |
| |
| public Node get(Node node) { |
| if (index < edges.getDirectCount()) { |
| return Edges.getNode(node, edges.getOffsets(), index); |
| } else { |
| return Edges.getNodeList(node, edges.getOffsets(), index).get(subIndex); |
| } |
| } |
| |
| public InputType getInputType() { |
| return ((InputEdges) edges).getInputType(index); |
| } |
| |
| public String getName() { |
| return edges.getName(index); |
| } |
| |
| public boolean isInputOptional() { |
| return ((InputEdges) edges).isOptional(index); |
| } |
| |
| public void set(Node node, Node value) { |
| if (index < edges.getDirectCount()) { |
| edges.setNode(node, index, value); |
| } else { |
| Edges.getNodeList(node, edges.getOffsets(), index).set(subIndex, value); |
| } |
| } |
| |
| public void initialize(Node node, Node value) { |
| if (index < edges.getDirectCount()) { |
| edges.initializeNode(node, index, value); |
| } else { |
| Edges.getNodeList(node, edges.getOffsets(), index).initialize(subIndex, value); |
| } |
| } |
| |
| @Override |
| public String toString() { |
| String res = edges.getType(index).getSimpleName() + ":" + edges.getName(index); |
| if (subIndex != Node.NOT_ITERABLE) { |
| res += "[" + subIndex + "]"; |
| } |
| return res; |
| } |
| |
| @Override |
| public int hashCode() { |
| final int prime = 31; |
| int result = 1; |
| result = prime * result + index; |
| result = prime * result + edges.hashCode(); |
| result = prime * result + subIndex; |
| return result; |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| if (obj == null) { |
| return false; |
| } |
| if (getClass() != obj.getClass()) { |
| return false; |
| } |
| Position other = (Position) obj; |
| if (index != other.index) { |
| return false; |
| } |
| if (edges != other.edges) { |
| return false; |
| } |
| if (subIndex != other.subIndex) { |
| return false; |
| } |
| return true; |
| } |
| |
| /** |
| * Gets the index within a {@link NodeList} if {@link #getIndex()} denotes a {@link NodeList} |
| * field otherwise {@link Node#NOT_ITERABLE}. |
| */ |
| public int getSubIndex() { |
| return subIndex; |
| } |
| |
| /** |
| * Gets the index of the {@link Node} or {@link NodeList} field denoted by this position. |
| */ |
| public int getIndex() { |
| return index; |
| } |
| } |