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- /* *******************************************************************
- * Copyright (c) 1999-2001 Xerox Corporation,
- * 2002 Palo Alto Research Center, Incorporated (PARC).
- * 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:
- * Xerox/PARC initial implementation
- * ******************************************************************/
-
- package org.aspectj.bridge;
-
- import java.io.PrintWriter;
-
- /**
- * An IMessageHandler implementation that writes all to a PrintWriter.
- * Clients may set this up to throw AbortException for FAIL or ERROR messages.
- * Subclasses may control whether messages are printed and how they
- * are rendered by overriding render(IMessage).
- */
- public class MessageWriter implements IMessageHandler {
-
- protected PrintWriter writer;
- protected boolean abortOnFailure;
- public MessageWriter(PrintWriter writer, boolean abortOnFailure) {
- this.writer = (null != writer ? writer : new PrintWriter(System.out));
- this.abortOnFailure = abortOnFailure;
- }
-
- /**
- * Handle message by printing and
- * (if abortOnFailure) throwing an AbortException if
- * the messages is a failure or an abort (but not for errors).
- * @see org.aspectj.bridge.IMessageHandler#handleMessage(IMessage)
- */
- public boolean handleMessage(IMessage message) throws AbortException {
- if ((null != message) && !isIgnoring(message.getKind())) {
- String result = render(message);
- if (null != result) {
- writer.println(result);
- writer.flush();
- if (abortOnFailure
- && (message.isFailed() || message.isAbort())) {
- throw new AbortException(message);
- }
- }
- }
- return true;
- }
-
- /**
- * @see org.aspectj.bridge.IMessageHandler#isIgnoring(org.aspectj.bridge.IMessage.Kind)
- */
- public boolean isIgnoring(IMessage.Kind kind) {
- // XXX share MessageHandler implementation in superclass
- return false;
- }
-
- /**
- * No-op
- * @see org.aspectj.bridge.IMessageHandler#isIgnoring(org.aspectj.bridge.IMessage.Kind)
- * @param kind
- */
- public void dontIgnore(IMessage.Kind kind) {
-
- }
-
- /**
- * No-op
- * @see org.aspectj.bridge.IMessageHandler#ignore(org.aspectj.bridge.IMessage.Kind)
- * @param kind
- */
- public void ignore(IMessage.Kind kind) {
- }
-
- /** @return null to not print, or message rendering (including newlines) */
- protected String render(IMessage message) {
- return message.toString();
- }
-
- }
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