View Javadoc
1 package org.apache.bcel.verifier.statics; 2 3 /* ==================================================================== 4 * The Apache Software License, Version 1.1 5 * 6 * Copyright (c) 2001 The Apache Software Foundation. All rights 7 * reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in 18 * the documentation and/or other materials provided with the 19 * distribution. 20 * 21 * 3. The end-user documentation included with the redistribution, 22 * if any, must include the following acknowledgment: 23 * "This product includes software developed by the 24 * Apache Software Foundation (http://www.apache.org/)." 25 * Alternately, this acknowledgment may appear in the software itself, 26 * if and wherever such third-party acknowledgments normally appear. 27 * 28 * 4. The names "Apache" and "Apache Software Foundation" and 29 * "Apache BCEL" must not be used to endorse or promote products 30 * derived from this software without prior written permission. For 31 * written permission, please contact apache@apache.org. 32 * 33 * 5. Products derived from this software may not be called "Apache", 34 * "Apache BCEL", nor may "Apache" appear in their name, without 35 * prior written permission of the Apache Software Foundation. 36 * 37 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED 38 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 39 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 40 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR 41 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 42 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 43 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 44 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 45 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 46 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 47 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 48 * SUCH DAMAGE. 49 * ==================================================================== 50 * 51 * This software consists of voluntary contributions made by many 52 * individuals on behalf of the Apache Software Foundation. For more 53 * information on the Apache Software Foundation, please see 54 * <http://www.apache.org/>;. 55 */ 56 57 import org.apache.bcel.generic.Type; 58 import org.apache.bcel.verifier.exc.*; 59 60 /*** 61 * A utility class holding the information about 62 * the names and the types of the local variables in 63 * a given method. 64 * 65 * @version $Id: LocalVariablesInfo.java,v 1.2 2002/06/13 09:32:50 enver Exp $ 66 * @author <A HREF="http://www.inf.fu-berlin.de/~ehaase"/>Enver Haase</A> 67 */ 68 public class LocalVariablesInfo{ 69 70 /*** The information about the local variables is stored here. */ 71 private LocalVariableInfo[] localVariableInfos; 72 73 /*** The constructor. */ 74 LocalVariablesInfo(int max_locals){ 75 localVariableInfos = new LocalVariableInfo[max_locals]; 76 for (int i=0; i<max_locals; i++){ 77 localVariableInfos[i] = new LocalVariableInfo(); 78 } 79 } 80 81 /*** Returns the LocalVariableInfo for the given slot. */ 82 public LocalVariableInfo getLocalVariableInfo(int slot){ 83 if (slot < 0 || slot >= localVariableInfos.length){ 84 throw new AssertionViolatedException("Slot number for local variable information out of range."); 85 } 86 return localVariableInfos[slot]; 87 } 88 89 /*** 90 * Adds information about the local variable in slot 'slot'. Automatically 91 * adds information for slot+1 if 't' is Type.LONG or Type.DOUBLE. 92 * @throws LocalVariableInfoInconsistentException if the new information conflicts 93 * with already gathered information. 94 */ 95 public void add(int slot, String name, int startpc, int length, Type t) throws LocalVariableInfoInconsistentException{ 96 // The add operation on LocalVariableInfo may throw the '...Inconsistent...' exception, we don't throw it explicitely here. 97 98 if (slot < 0 || slot >= localVariableInfos.length){ 99 throw new AssertionViolatedException("Slot number for local variable information out of range."); 100 } 101 102 localVariableInfos[slot].add(name, startpc, length, t); 103 if (t == Type.LONG) localVariableInfos[slot+1].add(name, startpc, length, LONG_Upper.theInstance()); 104 if (t == Type.DOUBLE) localVariableInfos[slot+1].add(name, startpc, length, DOUBLE_Upper.theInstance()); 105 } 106 }

This page was automatically generated by Maven