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/*
* Copyright © 2009 Reinier Zwitserloot and Roel Spilker.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package lombok.netbeans.agent;
import java.io.File;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.net.URL;
import java.util.Enumeration;
import java.util.Iterator;
import java.util.List;
import java.util.NoSuchElementException;
import javax.lang.model.element.Element;
import lombok.Lombok;
import lombok.patcher.inject.LiveInjector;
import org.netbeans.Module;
import org.netbeans.ProxyClassLoader;
import org.netbeans.api.java.source.ClasspathInfo;
import com.sun.source.tree.CompilationUnitTree;
import com.sun.source.tree.Tree;
import com.sun.source.util.SourcePositions;
import com.sun.source.util.TaskListener;
import com.sun.source.util.Trees;
import com.sun.tools.javac.api.JavacTaskImpl;
import com.sun.tools.javac.tree.JCTree;
import com.sun.tools.javac.util.Context;
// A lot of the footwork on the netbeans support has been done by Jan Lahoda, who is awesome. (jlahoda@netbeans.org)
// This footwork was converted into a patch script form by me (rzwitserloot). See:
// http://code.google.com/p/projectlombok/issues/detail?id=20#c3
public class PatchFixes {
public static boolean loadClass_decision(ClassLoader loader, String name) throws Exception {
return name.startsWith("lombok.");
}
public static Class<?> loadClass_value(ClassLoader loader, String name) throws Exception {
int last = name.lastIndexOf('.');
String pkg = (last >= 0) ? name.substring(0, last) : "";
Method m = ProxyClassLoader.class.getDeclaredMethod("selfLoadClass", String.class, String.class);
m.setAccessible(true);
return (Class<?>)m.invoke(loader, pkg, name);
}
public static boolean getResource_decision(ClassLoader loader, String name) throws Exception {
return name.startsWith("META-INF/services/lombok.");
}
public static URL getResource_value(ClassLoader loader, String name) throws Exception {
Method m = ProxyClassLoader.class.getDeclaredMethod("findResource", String.class);
m.setAccessible(true);
return (URL) m.invoke(loader, name);
}
public static boolean getResources_decision(ClassLoader loader, String name) throws Exception {
return name.startsWith("META-INF/services/lombok.");
}
public static Enumeration<?> getResources_value(ClassLoader loader, String name) throws Exception {
Method m = ProxyClassLoader.class.getDeclaredMethod("findResources", String.class);
m.setAccessible(true);
return (Enumeration<?>) m.invoke(loader, name);
}
public static void addSelfToClassLoader(Module module, List<File> classPath) {
if (module.getJarFile().getName().equals("org-netbeans-libs-javacimpl.jar")) {
String lombokJarLoc = LiveInjector.findPathJar(Lombok.class);
classPath.add(new File(lombokJarLoc));
}
}
public static void fixContentOnSetTaskListener(JavacTaskImpl that, TaskListener taskListener) throws Throwable {
Context context = that.getContext();
if (context.get(TaskListener.class) != null)
context.put(TaskListener.class, (TaskListener)null);
if (taskListener != null) {
try {
Method m = JavacTaskImpl.class.getDeclaredMethod("wrap", TaskListener.class);
try {
m.setAccessible(true);
} catch (SecurityException ignore) {}
TaskListener w = (TaskListener)m.invoke(that, taskListener);
context.put(TaskListener.class, w);
} catch (InvocationTargetException e) {
throw e.getCause();
}
}
}
public static Tree returnNullForGeneratedNode(Trees trees, Element element, Object o) throws Throwable {
try {
Tree tree = trees.getTree(element);
if (tree == null) return null;
CompilationUnitTree unit = (CompilationUnitTree) o.getClass().getMethod("getCompilationUnit").invoke(o);
int startPos = (int) trees.getSourcePositions().getStartPosition(unit, tree);
if (startPos == -1) return null;
return tree;
} catch (InvocationTargetException e) {
throw e.getCause();
}
}
public static long returnMinus1ForGeneratedNode(SourcePositions that, CompilationUnitTree cu, Tree tree) {
int start = (int) that.getStartPosition(cu, tree);
if (start < 0) return -1;
return that.getEndPosition(cu, tree);
}
public static void addTaskListenerWhenCallingJavac(JavacTaskImpl task,
ClasspathInfo cpInfo) throws Exception {
if (task == null) return;
Class<?> entryPoint = JavacTaskImpl.class.getClassLoader().loadClass("lombok.netbeans.agent.NetbeansEntryPoint");
if (entryPoint == null) {
/* TODO tell the user that lombok is not working. loadClass is not supposed to return null, but netbeans' loader does anyway. */
System.err.println("[LOMBOK] ClassLoader not patched correctly.");
} else {
task.setTaskListener((TaskListener) entryPoint.getConstructor(Context.class).newInstance(task.getContext()));
}
}
public static Iterator<JCTree> filterGenerated(final Iterator<JCTree> it) {
return new Iterator<JCTree>() {
private JCTree next;
private boolean hasNext;
{
calc();
}
private void calc() {
while (it.hasNext()) {
JCTree n = it.next();
if (n.pos != -1) {
hasNext = true;
next = n;
return;
}
}
hasNext = false;
next = null;
}
@Override public boolean hasNext() {
return hasNext;
}
@Override public JCTree next() {
if (!hasNext) throw new NoSuchElementException();
JCTree n = next;
calc();
return n;
}
@Override public void remove() {
throw new UnsupportedOperationException();
}
};
}
}
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