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- package org.aspectj.apache.bcel.verifier.structurals;
-
- /* ====================================================================
- * 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 (https://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
- * <https://www.apache.org/>.
- */
-
-
- /**
- * This class represents a JVM execution frame; that means,
- * a local variable array and an operand stack.
- *
- * @version $Id: Frame.java,v 1.2 2008/05/28 23:53:03 aclement Exp $
- * @author <A HREF="https://www.inf.fu-berlin.de/~ehaase"/>Enver Haase</A>
- */
-
- public class Frame{
-
- /**
- * For instance initialization methods, it is important to remember
- * which instance it is that is not initialized yet. It will be
- * initialized invoking another constructor later.
- * NULL means the instance already *is* initialized.
- */
- protected static UninitializedObjectType _this;
-
- /**
- *
- */
- private LocalVariables locals;
-
- /**
- *
- */
- private OperandStack stack;
-
- /**
- *
- */
- public Frame(int maxLocals, int maxStack){
- locals = new LocalVariables(maxLocals);
- stack = new OperandStack(maxStack);
- }
-
- /**
- *
- */
- public Frame(LocalVariables locals, OperandStack stack){
- this.locals = locals;
- this.stack = stack;
- }
-
- /**
- *
- */
- protected Object clone(){
- Frame f = new Frame(locals.getClone(), stack.getClone());
- return f;
- }
-
- /**
- *
- */
- public Frame getClone(){
- return (Frame) clone();
- }
-
- /**
- *
- */
- public LocalVariables getLocals(){
- return locals;
- }
-
- /**
- *
- */
- public OperandStack getStack(){
- return stack;
- }
-
- /**
- *
- */
- public boolean equals(Object o){
- if (!(o instanceof Frame)) return false; // implies "null" is non-equal.
- Frame f = (Frame) o;
- return this.stack.equals(f.stack) && this.locals.equals(f.locals);
- }
-
- /**
- * Returns a String representation of the Frame instance.
- */
- public String toString(){
- String s="Local Variables:\n";
- s += locals;
- s += "OperandStack:\n";
- s += stack;
- return s;
- }
- }
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