/*******************************************************************************
* Copyright (c) 2000, 2012 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jdi.internal;
import java.io.DataInputStream;
import java.io.IOException;
import org.eclipse.jdi.internal.jdwp.JdwpCommandPacket;
import org.eclipse.jdi.internal.jdwp.JdwpID;
import org.eclipse.jdi.internal.jdwp.JdwpReplyPacket;
import org.eclipse.jdi.internal.jdwp.JdwpStringID;
import com.sun.jdi.ObjectCollectedException;
import com.sun.jdi.StringReference;
/**
* this class implements the corresponding interfaces declared by the JDI
* specification. See the com.sun.jdi package for more information.
*
*/
public class StringReferenceImpl extends ObjectReferenceImpl implements
StringReference {
/** JDWP Tag. */
public static final byte tag = JdwpID.STRING_TAG;
/**
* Creates new StringReferenceImpl.
*/
public StringReferenceImpl(VirtualMachineImpl vmImpl, JdwpStringID stringID) {
super("StringReference", vmImpl, stringID); //$NON-NLS-1$
}
/**
* @returns Value tag.
*/
@Override
public byte getTag() {
return tag;
}
/**
* @returns Returns the StringReference as a String.
*/
public String value() {
// Note that this information should not be cached.
initJdwpRequest();
try {
JdwpReplyPacket replyPacket = requestVM(JdwpCommandPacket.SR_VALUE,
this);
defaultReplyErrorHandler(replyPacket.errorCode());
DataInputStream replyData = replyPacket.dataInStream();
String result = readString("value", replyData); //$NON-NLS-1$
return result;
} catch (IOException e) {
defaultIOExceptionHandler(e);
return null;
} finally {
handledJdwpRequest();
}
}
/**
* @return Reads JDWP representation and returns new instance.
*/
public static StringReferenceImpl read(MirrorImpl target, DataInputStream in)
throws IOException {
VirtualMachineImpl vmImpl = target.virtualMachineImpl();
JdwpStringID ID = new JdwpStringID(vmImpl);
ID.read(in);
if (target.fVerboseWriter != null)
target.fVerboseWriter.println("stringReference", ID.value()); //$NON-NLS-1$
if (ID.isNull())
return null;
StringReferenceImpl mirror = new StringReferenceImpl(vmImpl, ID);
return mirror;
}
/**
* @return Returns description of Mirror object.
*/
@Override
public String toString() {
try {
return "\"" + value() + "\""; //$NON-NLS-1$ //$NON-NLS-2$
} catch (ObjectCollectedException e) {
return JDIMessages.StringReferenceImpl__Garbage_Collected__StringReference__3
+ idString();
} catch (Exception e) {
return fDescription;
}
}
}