/*
* Copyright 2000-2004 The Apache Software Foundation
*
* Licensed 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,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package org.apache.bcel5_2_0.classfile;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import org.apache.bcel5_2_0.Constants;
/**
* This class is derived from the abstract
* <A HREF="org.apache.bcel.classfile.Constant.html">Constant</A> class
* and represents a reference to a Utf8 encoded string.
*
* @version $Id: ConstantUtf8.java 386056 2006-03-15 11:31:56Z tcurdt $
* @author <A HREF="mailto:m.dahm@gmx.de">M. Dahm</A>
* @see Constant
*/
public final class ConstantUtf8 extends Constant {
private String bytes;
/**
* Initialize from another object.
*/
public ConstantUtf8(ConstantUtf8 c) {
this(c.getBytes());
}
/**
* Initialize instance from file data.
*
* @param file Input stream
* @throws IOException
*/
ConstantUtf8(DataInputStream file) throws IOException {
super(Constants.CONSTANT_Utf8);
bytes = file.readUTF();
}
/**
* @param bytes Data
*/
public ConstantUtf8(String bytes) {
super(Constants.CONSTANT_Utf8);
if (bytes == null) {
throw new IllegalArgumentException("bytes must not be null!");
}
this.bytes = bytes;
}
/**
* 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( Visitor v ) {
v.visitConstantUtf8(this);
}
/**
* Dump String in Utf8 format to file stream.
*
* @param file Output file stream
* @throws IOException
*/
public final void dump( DataOutputStream file ) throws IOException {
file.writeByte(tag);
file.writeUTF(bytes);
}
/**
* @return Data converted to string.
*/
public final String getBytes() {
return bytes;
}
/**
* @param bytes the raw bytes of this Utf-8
*/
public final void setBytes( String bytes ) {
this.bytes = bytes;
}
/**
* @return String representation
*/
public final String toString() {
return super.toString() + "(\"" + Utility.replace(bytes, "\n", "\\n") + "\")";
}
}