| /* |
| * Copyright (c) 2015, 2016, 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.nodes.cfg; |
| |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.List; |
| |
| import org.graalvm.compiler.core.common.LocationIdentity; |
| |
| public class LocationSet { |
| private LocationIdentity firstLocation; |
| private List<LocationIdentity> list; |
| |
| public LocationSet() { |
| list = null; |
| } |
| |
| public LocationSet(LocationSet other) { |
| this.firstLocation = other.firstLocation; |
| if (other.list != null && other.list.size() > 0) { |
| list = new ArrayList<>(other.list); |
| } |
| } |
| |
| private void initList() { |
| if (list == null) { |
| list = new ArrayList<>(4); |
| } |
| } |
| |
| public boolean isEmpty() { |
| return firstLocation == null; |
| } |
| |
| public boolean isAny() { |
| return firstLocation != null && firstLocation.isAny(); |
| } |
| |
| public void add(LocationIdentity location) { |
| if (this.isAny()) { |
| return; |
| } else if (location.isAny()) { |
| firstLocation = location; |
| list = null; |
| } else if (location.isImmutable()) { |
| return; |
| } else { |
| assert location.isMutable() && location.isSingle(); |
| if (firstLocation == null) { |
| firstLocation = location; |
| } else if (location.equals(firstLocation)) { |
| return; |
| } else { |
| initList(); |
| for (int i = 0; i < list.size(); ++i) { |
| LocationIdentity value = list.get(i); |
| if (location.equals(value)) { |
| return; |
| } |
| } |
| list.add(location); |
| } |
| } |
| } |
| |
| public void addAll(LocationSet other) { |
| if (other.firstLocation != null) { |
| add(other.firstLocation); |
| } |
| List<LocationIdentity> otherList = other.list; |
| if (otherList != null) { |
| for (LocationIdentity l : otherList) { |
| add(l); |
| } |
| } |
| } |
| |
| public boolean contains(LocationIdentity locationIdentity) { |
| assert locationIdentity.isSingle(); |
| assert locationIdentity.isMutable(); |
| if (LocationIdentity.any().equals(firstLocation)) { |
| return true; |
| } |
| if (locationIdentity.equals(firstLocation)) { |
| return true; |
| } |
| if (list != null) { |
| for (int i = 0; i < list.size(); ++i) { |
| LocationIdentity value = list.get(i); |
| if (locationIdentity.equals(value)) { |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| |
| public List<LocationIdentity> getCopyAsList() { |
| ArrayList<LocationIdentity> result = new ArrayList<>(); |
| if (firstLocation != null) { |
| result.add(firstLocation); |
| } |
| if (list != null) { |
| result.addAll(list); |
| } |
| return result; |
| } |
| |
| @Override |
| public String toString() { |
| if (this.isAny()) { |
| return "ANY"; |
| } else if (this.isEmpty()) { |
| return "EMPTY"; |
| } else { |
| List<LocationIdentity> copyAsList = getCopyAsList(); |
| return Arrays.toString(copyAsList.toArray(new LocationIdentity[0])); |
| } |
| } |
| } |