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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 (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 java.io.DataInputStream;
- import java.io.DataOutputStream;
- import java.io.IOException;
-
- /**
- * This class represents a stack map entry recording the types of
- * local variables and the the of stack items at a given byte code offset.
- * See CLDC specification 5.3.1.2
- *
- * @version $Id: StackMapEntry.java,v 1.5 2008/05/28 23:53:02 aclement Exp $
- * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>
- * @see StackMap
- * @see StackMapType
- */
- public final class StackMapEntry implements Cloneable {
- private int byte_code_offset;
- private int number_of_locals;
- private StackMapType[] types_of_locals;
- private int number_of_stack_items;
- private StackMapType[] types_of_stack_items;
- private ConstantPool constant_pool;
-
- /**
- * Construct object from file stream.
- * @param file Input stream
- * @throws IOException
- */
- StackMapEntry(DataInputStream file, ConstantPool constant_pool) throws IOException
- {
- this(file.readShort(), file.readShort(), null, -1, null, constant_pool);
-
- types_of_locals = new StackMapType[number_of_locals];
- for(int i=0; i < number_of_locals; i++)
- types_of_locals[i] = new StackMapType(file, constant_pool);
-
- number_of_stack_items = file.readShort();
- types_of_stack_items = new StackMapType[number_of_stack_items];
- for(int i=0; i < number_of_stack_items; i++)
- types_of_stack_items[i] = new StackMapType(file, constant_pool);
- }
-
- public StackMapEntry(int byte_code_offset, int number_of_locals,
- StackMapType[] types_of_locals,
- int number_of_stack_items,
- StackMapType[] types_of_stack_items,
- ConstantPool constant_pool) {
- this.byte_code_offset = byte_code_offset;
- this.number_of_locals = number_of_locals;
- this.types_of_locals = types_of_locals;
- this.number_of_stack_items = number_of_stack_items;
- this.types_of_stack_items = types_of_stack_items;
- this.constant_pool = constant_pool;
- }
-
- /**
- * Dump stack map entry
- *
- * @param file Output file stream
- * @throws IOException
- */
- public final void dump(DataOutputStream file) throws IOException
- {
- file.writeShort(byte_code_offset);
-
- file.writeShort(number_of_locals);
- for(int i=0; i < number_of_locals; i++)
- types_of_locals[i].dump(file);
-
- file.writeShort(number_of_stack_items);
- for(int i=0; i < number_of_stack_items; i++)
- types_of_stack_items[i].dump(file);
- }
-
- /**
- * @return String representation.
- */
- public final String toString() {
- StringBuffer buf = new StringBuffer("(offset=" + byte_code_offset);
-
- if(number_of_locals > 0) {
- buf.append(", locals={");
-
- for(int i=0; i < number_of_locals; i++) {
- buf.append(types_of_locals[i]);
- if(i < number_of_locals - 1)
- buf.append(", ");
- }
-
- buf.append("}");
- }
-
- if(number_of_stack_items > 0) {
- buf.append(", stack items={");
-
- for(int i=0; i < number_of_stack_items; i++) {
- buf.append(types_of_stack_items[i]);
- if(i < number_of_stack_items - 1)
- buf.append(", ");
- }
-
- buf.append("}");
- }
-
- buf.append(")");
-
- return buf.toString();
- }
-
-
- public void setByteCodeOffset(int b) { byte_code_offset = b; }
- public int getByteCodeOffset() { return byte_code_offset; }
- public void setNumberOfLocals(int n) { number_of_locals = n; }
- public int getNumberOfLocals() { return number_of_locals; }
- public void setTypesOfLocals(StackMapType[] t) { types_of_locals = t; }
- public StackMapType[] getTypesOfLocals() { return types_of_locals; }
- public void setNumberOfStackItems(int n) { number_of_stack_items = n; }
- public int getNumberOfStackItems() { return number_of_stack_items; }
- public void setTypesOfStackItems(StackMapType[] t) { types_of_stack_items = t; }
- public StackMapType[] getTypesOfStackItems() { return types_of_stack_items; }
-
- /**
- * @return deep copy of this object
- */
- public StackMapEntry copy() {
- try {
- return (StackMapEntry)clone();
- } catch(CloneNotSupportedException e) {}
-
- return null;
- }
-
- /**
- * 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.visitStackMapEntry(this);
- }
-
- /**
- * @return Constant pool used by this object.
- */
- public final ConstantPool getConstantPool() { return constant_pool; }
-
- /**
- * @param constant_pool Constant pool to be used for this object.
- */
- public final void setConstantPool(ConstantPool constant_pool) {
- this.constant_pool = constant_pool;
- }
- }
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