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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.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Iterator;
import java.util.NoSuchElementException;
import javax.lang.model.element.Element;
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 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();
}
}
}
//Contributed by Jan Lahoda (jlahoda@netbeans.org)
//Turned into a patch script by rzwitserloot.
//see http://code.google.com/p/projectlombok/issues/detail?id=20#c3
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,
@SuppressWarnings("unused") /* Will come in handy later */ ClasspathInfo cpInfo) {
task.setTaskListener(new NetbeansEntryPoint(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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