1 /* 2 * Copyright (c) 2011, 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 package jdk.vm.ci.meta; 24 25 import java.util.ArrayList; 26 import java.util.List; 27 28 public class LocalVariableTableImpl implements LocalVariableTable { 29 30 private final Local[] locals; 31 32 public LocalVariableTableImpl(Local[] locals) { 33 this.locals = locals; 34 } 35 36 @Override 37 public Local getLocal(int slot, int bci) { 38 Local result = null; 39 for (Local local : locals) { 40 if (local.getSlot() == slot && local.getStartBCI() <= bci && local.getEndBCI() >= bci) { 41 if (result == null) { 42 result = local; 43 } else { 44 throw new IllegalStateException("Locals overlap!"); 45 } 46 } 47 } 48 return result; 49 } 50 51 @Override 52 public Local[] getLocals() { 53 return locals; 54 } 55 56 @Override 57 public Local[] getLocalsAt(int bci) { 58 List<Local> result = new ArrayList<>(); 59 for (Local l : locals) { 60 if (l.getStartBCI() <= bci && bci <= l.getEndBCI()) { 61 result.add(l); 62 } 63 } 64 return result.toArray(new Local[result.size()]); 65 } 66 67 }