- package com.sun.org.apache.bcel.internal.verifier.statics;
-
- /* ====================================================================
- * The Apache Software License, Version 1.1
- *
- * Copyright (c) 2001 The Apache Software Foundation. All rights
- * reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. The end-user documentation included with the redistribution,
- * if any, must include the following acknowledgment:
- * "This product includes software developed by the
- * Apache Software Foundation (http://www.apache.org/)."
- * Alternately, this acknowledgment may appear in the software itself,
- * if and wherever such third-party acknowledgments normally appear.
- *
- * 4. The names "Apache" and "Apache Software Foundation" and
- * "Apache BCEL" must not be used to endorse or promote products
- * derived from this software without prior written permission. For
- * written permission, please contact apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache",
- * "Apache BCEL", nor may "Apache" appear in their name, without
- * prior written permission of the Apache Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Software Foundation. For more
- * information on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- */
-
- import com.sun.org.apache.bcel.internal.Constants;
- import com.sun.org.apache.bcel.internal.generic.Type;
- import com.sun.org.apache.bcel.internal.verifier.exc.*;
-
- /**
- * A utility class holding the information about
- * the names and the types of the local variables in
- * a given method.
- *
- * @version $Id: LocalVariablesInfo.java,v 1.1.1.1 2001/10/29 20:00:34 jvanzyl Exp $
- * @author <A HREF="http://www.inf.fu-berlin.de/~ehaase"/>Enver Haase</A>
- */
- public class LocalVariablesInfo{
-
- /** The information about the local variables is stored here. */
- private LocalVariableInfo[] localVariableInfos;
-
- /**
- * The ints in the list represent code offsets where either instructions must start
- * or the offset is the length of the code array. This will be verified in Pass 3a.
- */
- private IntList instruction_offsets = new IntList();
-
- /** The constructor. */
- LocalVariablesInfo(int max_locals){
- localVariableInfos = new LocalVariableInfo[max_locals];
- for (int i=0; i<max_locals; i++){
- localVariableInfos[i] = new LocalVariableInfo();
- }
- }
-
- /** Returns the LocalVariableInfo for the given slot. */
- public LocalVariableInfo getLocalVariableInfo(int slot){
- if (slot < 0 || slot >= localVariableInfos.length){
- throw new AssertionViolatedException("Slot number for local variable information out of range.");
- }
- return localVariableInfos[slot];
- }
-
- /**
- * Adds information about the local variable in slot 'slot'. Automatically
- * adds information for slot+1 if 't' is Type.LONG or Type.DOUBLE.
- * @throws LocalVariableInfoInconsistentException if the new information conflicts
- * with already gathered information.
- */
- public void add(int slot, String name, int startpc, int length, Type t) throws LocalVariableInfoInconsistentException{
- // The add operation on LocalVariableInfo may throw the '...Inconsistent...' exception, we don't throw it explicitely here.
-
- if (slot < 0 || slot >= localVariableInfos.length){
- throw new AssertionViolatedException("Slot number for local variable information out of range.");
- }
-
- localVariableInfos[slot].add(name, startpc, length, t);
- if (t == Type.LONG) localVariableInfos[slot+1].add(name, startpc, length, LONG_Upper.theInstance());
- if (t == Type.DOUBLE) localVariableInfos[slot+1].add(name, startpc, length, DOUBLE_Upper.theInstance());
- }
- }