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