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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 [email protected].
*
* 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
* .
*/
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import org.aspectj.apache.bcel.Constants;
/**
* This class is derived from Attribute and represents a reference to the source file of this class. At most one SourceFile
* attribute should appear per classfile. The intention of this class is that it is instantiated from the
* Attribute.readAttribute() method.
*
* @version $Id: SourceFile.java,v 1.5 2009/09/15 19:40:12 aclement Exp $
* @author M. Dahm
* @see Attribute
*/
public final class SourceFile extends Attribute {
private int sourcefile_index;
/**
* Initialize from another object. Note that both objects use the same references (shallow copy). Use clone() for a physical
* copy.
*/
public SourceFile(SourceFile c) {
this(c.getNameIndex(), c.getLength(), c.getSourceFileIndex(), c.getConstantPool());
}
/**
* Construct object from file stream.
*
* @param name_index Index in constant pool to CONSTANT_Utf8
* @param length Content length in bytes
* @param file Input stream
* @param constant_pool Array of constants
* @throws IOException
*/
SourceFile(int name_index, int length, DataInputStream file, ConstantPool constant_pool) throws IOException {
this(name_index, length, file.readUnsignedShort(), constant_pool);
}
/**
* @param name_index Index in constant pool to CONSTANT_Utf8, which should represent the string "SourceFile".
* @param length Content length in bytes, the value should be 2.
* @param constant_pool The constant pool that this attribute is associated with.
* @param sourcefile_index Index in constant pool to CONSTANT_Utf8. This string will be interpreted as the name of the file from
* which this class was compiled. It will not be interpreted as indicating the name of the directory contqining the file
* or an absolute path; this information has to be supplied the consumer of this attribute - in many cases, the JVM.
*/
public SourceFile(int name_index, int length, int sourcefile_index, ConstantPool constant_pool) {
super(Constants.ATTR_SOURCE_FILE, name_index, length, constant_pool);
this.sourcefile_index = sourcefile_index;
}
/**
* 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
*/
@Override
public void accept(ClassVisitor v) {
v.visitSourceFile(this);
}
/**
* Dump source file attribute to file stream in binary format.
*
* @param file Output file stream
* @throws IOException
*/
@Override
public final void dump(DataOutputStream file) throws IOException {
super.dump(file);
file.writeShort(sourcefile_index);
}
/**
* @return Index in constant pool of source file name.
*/
public final int getSourceFileIndex() {
return sourcefile_index;
}
/**
* @param sourcefile_index.
*/
public final void setSourceFileIndex(int sourcefile_index) {
this.sourcefile_index = sourcefile_index;
}
/**
* @return Source file name.
*/
public final String getSourceFileName() {
ConstantUtf8 c = (ConstantUtf8) cpool.getConstant(sourcefile_index, Constants.CONSTANT_Utf8);
return c.getValue();
}
/**
* @return String representation
*/
@Override
public final String toString() {
return "SourceFile(" + getSourceFileName() + ")";
}
/**
* @return deep copy of this attribute //
*/
// @Override
// public Attribute copy(ConstantPool constant_pool) {
// return (SourceFile) clone();
// }
}
