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- package org.aspectj.apache.bcel.classfile;
-
- /* ====================================================================
- * 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/>.
- */
-
- import java.io.DataInputStream;
- import java.io.DataOutputStream;
- import java.io.IOException;
-
- import org.aspectj.apache.bcel.Constants;
-
- /**
- * This class represents a local variable within a method. It contains its scope, name, signature and index on the method's frame.
- *
- * @version $Id: LocalVariable.java,v 1.5 2009/09/10 15:35:05 aclement Exp $
- * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>
- * @see LocalVariableTable
- */
- public final class LocalVariable implements Constants, Cloneable, Node {
-
- private int start_pc; // Range in which the variable is valid
- private int length;
- private int name_index; // Index in constant pool of variable name
- private int signature_index; // Index of variable signature
- private int index; /*
- * Variable is `index'th local variable on this method's frame.
- */
-
- private ConstantPool constant_pool;
-
- /**
- * Initialize from another object. Note that both objects use the same references (shallow copy). Use copy() for a physical
- * copy.
- */
- public LocalVariable(LocalVariable c) {
- this(c.getStartPC(), c.getLength(), c.getNameIndex(), c.getSignatureIndex(), c.getIndex(), c.getConstantPool());
- }
-
- /**
- * Construct object from file stream.
- *
- * @param file Input stream
- * @throws IOException
- */
- LocalVariable(DataInputStream file, ConstantPool constant_pool) throws IOException {
- this(file.readUnsignedShort(), file.readUnsignedShort(), file.readUnsignedShort(), file.readUnsignedShort(), file
- .readUnsignedShort(), constant_pool);
- }
-
- /**
- * @param start_pc Range in which the variable
- * @param length ... is valid
- * @param name_index Index in constant pool of variable name
- * @param signature_index Index of variable's signature
- * @param index Variable is `index'th local variable on the method's frame
- * @param constant_pool Array of constants
- */
- public LocalVariable(int start_pc, int length, int name_index, int signature_index, int index, ConstantPool constant_pool) {
- this.start_pc = start_pc;
- this.length = length;
- this.name_index = name_index;
- this.signature_index = signature_index;
- this.index = index;
- this.constant_pool = constant_pool;
- }
-
- /**
- * Called by objects that are traversing the nodes of the tree implicitely defined by the contents of a Java class. I.e., the
- * hierarchy of methods, fields, attributes, etc. spawns a tree of objects.
- *
- * @param v Visitor object
- */
- public void accept(ClassVisitor v) {
- v.visitLocalVariable(this);
- }
-
- /**
- * Dump local variable to file stream in binary format.
- *
- * @param file Output file stream
- * @throws IOException
- */
- public final void dump(DataOutputStream file) throws IOException {
- file.writeShort(start_pc);
- file.writeShort(length);
- file.writeShort(name_index);
- file.writeShort(signature_index);
- file.writeShort(index);
- }
-
- /**
- * @return Constant pool used by this object.
- */
- public final ConstantPool getConstantPool() {
- return constant_pool;
- }
-
- /**
- * @return Variable is valid within getStartPC() .. getStartPC()+getLength()
- */
- public final int getLength() {
- return length;
- }
-
- /**
- * @return Variable name.
- */
- public final String getName() {
- ConstantUtf8 c;
-
- c = (ConstantUtf8) constant_pool.getConstant(name_index, CONSTANT_Utf8);
- return c.getValue();
- }
-
- /**
- * @return Index in constant pool of variable name.
- */
- public final int getNameIndex() {
- return name_index;
- }
-
- /**
- * @return Signature.
- */
- public final String getSignature() {
- ConstantUtf8 c;
- c = (ConstantUtf8) constant_pool.getConstant(signature_index, CONSTANT_Utf8);
- return c.getValue();
- }
-
- /**
- * @return Index in constant pool of variable signature.
- */
- public final int getSignatureIndex() {
- return signature_index;
- }
-
- /**
- * @return index of register where variable is stored
- */
- public final int getIndex() {
- return index;
- }
-
- /**
- * @return Start of range where he variable is valid
- */
- public final int getStartPC() {
- return start_pc;
- }
-
- /**
- * @param constant_pool Constant pool to be used for this object.
- */
- public final void setConstantPool(ConstantPool constant_pool) {
- this.constant_pool = constant_pool;
- }
-
- /**
- * @param length.
- */
- public final void setLength(int length) {
- this.length = length;
- }
-
- /**
- * @param name_index.
- */
- public final void setNameIndex(int name_index) {
- this.name_index = name_index;
- }
-
- /**
- * @param signature_index.
- */
- public final void setSignatureIndex(int signature_index) {
- this.signature_index = signature_index;
- }
-
- /**
- * @param index.
- */
- public final void setIndex(int index) {
- this.index = index;
- }
-
- /**
- * @param start_pc Specify range where the local variable is valid.
- */
- public final void setStartPC(int start_pc) {
- this.start_pc = start_pc;
- }
-
- /**
- * @return string representation.
- */
- @Override
- public final String toString() {
- String name = getName(), signature = Utility.signatureToString(getSignature());
-
- return "LocalVariable(start_pc = " + start_pc + ", length = " + length + ", index = " + index + ":" + signature + " "
- + name + ")";
- }
-
- /**
- * @return deep copy of this object
- */
- public LocalVariable copy() {
- try {
- return (LocalVariable) clone();
- } catch (CloneNotSupportedException e) {
- }
-
- return null;
- }
- }
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