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The AspectJ weaver introduces advices to java classes
/*******************************************************************************
* Copyright (c) 2005 Contributors.
* 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://eclipse.org/legal/epl-v10.html
*
* Contributors:
* Alexandre Vasseur initial implementation
*******************************************************************************/
package org.aspectj.weaver.loadtime;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import org.aspectj.bridge.IMessage;
import org.aspectj.bridge.IMessageHandler;
import org.aspectj.bridge.Message;
import org.aspectj.util.LangUtil;
/**
* A class that hanldes LTW options. Note: AV - I choosed to not reuse AjCompilerOptions and alike since those implies too many
* dependancies on jdt and ajdt modules.
*
* @author Alexandre Vasseur
*/
public class Options {
private final static String OPTION_15 = "-1.5";
private final static String OPTION_lazyTjp = "-XlazyTjp";
private final static String OPTION_noWarn = "-nowarn";
private final static String OPTION_noWarnNone = "-warn:none";
private final static String OPTION_proceedOnError = "-proceedOnError";
private final static String OPTION_verbose = "-verbose";
private final static String OPTION_debug = "-debug";
private final static String OPTION_reweavable = "-Xreweavable";// notReweavable is default for LTW
private final static String OPTION_noinline = "-Xnoinline";
private final static String OPTION_addSerialVersionUID = "-XaddSerialVersionUID";
private final static String OPTION_hasMember = "-XhasMember";
private final static String OPTION_pinpoint = "-Xdev:pinpoint";
private final static String OPTION_showWeaveInfo = "-showWeaveInfo";
private final static String OPTIONVALUED_messageHandler = "-XmessageHandlerClass:";
private static final String OPTIONVALUED_Xlintfile = "-Xlintfile:";
private static final String OPTIONVALUED_Xlint = "-Xlint:";
private static final String OPTIONVALUED_joinpoints = "-Xjoinpoints:";
private static final String OPTIONVALUED_Xset = "-Xset:";
private static final String OPTION_timers = "-timers";
private static final String OPTIONVALUED_loadersToSkip = "-loadersToSkip:";
public static WeaverOption parse(String options, ClassLoader laoder, IMessageHandler imh) {
WeaverOption weaverOption = new WeaverOption(imh);
if (LangUtil.isEmpty(options)) {
return weaverOption;
}
// the first option wins
List flags = LangUtil.anySplit(options, " ");
Collections.reverse(flags);
// do a first round on the message handler since it will report the options themselves
for (Iterator iterator = flags.iterator(); iterator.hasNext();) {
String arg = iterator.next();
if (arg.startsWith(OPTIONVALUED_messageHandler)) {
if (arg.length() > OPTIONVALUED_messageHandler.length()) {
String handlerClass = arg.substring(OPTIONVALUED_messageHandler.length()).trim();
try {
Class handler = Class.forName(handlerClass, false, laoder);
weaverOption.messageHandler = ((IMessageHandler) handler.newInstance());
} catch (Throwable t) {
weaverOption.messageHandler.handleMessage(new Message("Cannot instantiate message handler " + handlerClass,
IMessage.ERROR, t, null));
}
}
}
}
// configure the other options
for (Iterator iterator = flags.iterator(); iterator.hasNext();) {
String arg = (String) iterator.next();
if (arg.equals(OPTION_15)) {
weaverOption.java5 = true;
} else if (arg.equalsIgnoreCase(OPTION_lazyTjp)) {
weaverOption.lazyTjp = true;
} else if (arg.equalsIgnoreCase(OPTION_noinline)) {
weaverOption.noInline = true;
} else if (arg.equalsIgnoreCase(OPTION_addSerialVersionUID)) {
weaverOption.addSerialVersionUID = true;
} else if (arg.equalsIgnoreCase(OPTION_noWarn) || arg.equalsIgnoreCase(OPTION_noWarnNone)) {
weaverOption.noWarn = true;
} else if (arg.equalsIgnoreCase(OPTION_proceedOnError)) {
weaverOption.proceedOnError = true;
} else if (arg.equalsIgnoreCase(OPTION_reweavable)) {
weaverOption.notReWeavable = false;
} else if (arg.equalsIgnoreCase(OPTION_showWeaveInfo)) {
weaverOption.showWeaveInfo = true;
} else if (arg.equalsIgnoreCase(OPTION_hasMember)) {
weaverOption.hasMember = true;
} else if (arg.startsWith(OPTIONVALUED_joinpoints)) {
if (arg.length() > OPTIONVALUED_joinpoints.length()) {
weaverOption.optionalJoinpoints = arg.substring(OPTIONVALUED_joinpoints.length()).trim();
}
} else if (arg.equalsIgnoreCase(OPTION_verbose)) {
weaverOption.verbose = true;
} else if (arg.equalsIgnoreCase(OPTION_debug)) {
weaverOption.debug = true;
} else if (arg.equalsIgnoreCase(OPTION_pinpoint)) {
weaverOption.pinpoint = true;
} else if (arg.startsWith(OPTIONVALUED_messageHandler)) {
// handled in first round
} else if (arg.startsWith(OPTIONVALUED_Xlintfile)) {
if (arg.length() > OPTIONVALUED_Xlintfile.length()) {
weaverOption.lintFile = arg.substring(OPTIONVALUED_Xlintfile.length()).trim();
}
} else if (arg.startsWith(OPTIONVALUED_Xlint)) {
if (arg.length() > OPTIONVALUED_Xlint.length()) {
weaverOption.lint = arg.substring(OPTIONVALUED_Xlint.length()).trim();
}
} else if (arg.startsWith(OPTIONVALUED_Xset)) {
if (arg.length() > OPTIONVALUED_Xlint.length()) {
weaverOption.xSet = arg.substring(OPTIONVALUED_Xset.length()).trim();
}
} else if (arg.equalsIgnoreCase(OPTION_timers)) {
weaverOption.timers = true;
} else if (arg.startsWith(OPTIONVALUED_loadersToSkip)) {
if (arg.length() > OPTIONVALUED_loadersToSkip.length()) {
String value = arg.substring(OPTIONVALUED_loadersToSkip.length()).trim();
weaverOption.loadersToSkip = value;
}
} else {
weaverOption.messageHandler.handleMessage(new Message("Cannot configure weaver with option '" + arg
+ "': unknown option", IMessage.WARNING, null, null));
}
}
// refine message handler configuration
if (weaverOption.noWarn) {
weaverOption.messageHandler.ignore(IMessage.WARNING);
}
if (weaverOption.verbose) {
weaverOption.messageHandler.dontIgnore(IMessage.INFO);
}
if (weaverOption.debug) {
weaverOption.messageHandler.dontIgnore(IMessage.DEBUG);
}
if (weaverOption.showWeaveInfo) {
weaverOption.messageHandler.dontIgnore(IMessage.WEAVEINFO);
}
return weaverOption;
}
public static class WeaverOption {
boolean java5;
boolean lazyTjp;
boolean hasMember;
boolean timers = false;
String optionalJoinpoints;
boolean noWarn;
boolean proceedOnError;
boolean verbose;
boolean debug;
boolean notReWeavable = true;// default to notReweavable for LTW (faster)
boolean noInline;
boolean addSerialVersionUID;
boolean showWeaveInfo;
boolean pinpoint;
IMessageHandler messageHandler;
String lint;
String lintFile;
String xSet;
String loadersToSkip;
public WeaverOption(IMessageHandler imh) {
// messageHandler = new DefaultMessageHandler();//default
this.messageHandler = imh;
}
}
}