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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
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package com.sun.org.apache.bcel.internal.classfile;
import java.io.DataInput;
import java.io.DataOutputStream;
import java.io.IOException;
import com.sun.org.apache.bcel.internal.Const;
/**
* This class is derived from <em>Attribute</em> 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 <em>Attribute.readAttribute()</em> method.
*
* @version $Id$
* @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(final SourceFile c) {
this(c.getNameIndex(), c.getLength(), c.getSourceFileIndex(), c.getConstantPool());
}
/**
* Construct object from input stream.
* @param name_index Index in constant pool to CONSTANT_Utf8
* @param length Content length in bytes
* @param input Input stream
* @param constant_pool Array of constants
* @throws IOException
*/
SourceFile(final int name_index, final int length, final DataInput input, final ConstantPool constant_pool)
throws IOException {
this(name_index, length, input.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(final int name_index, final int length, final int sourcefile_index, final ConstantPool constant_pool) {
super(Const.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( final Visitor 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( final 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( final int sourcefile_index ) {
this.sourcefile_index = sourcefile_index;
}
/**
* @return Source file name.
*/
public final String getSourceFileName() {
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