/* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. */ package org.netbeans.modules.editor.java; import com.sun.source.util.TreePath; import com.sun.source.util.Trees; import java.lang.ref.Reference; import java.lang.ref.WeakReference; import java.net.MalformedURLException; import java.util.Arrays; import java.util.Collections; import java.util.EnumSet; import java.util.HashSet; import java.util.LinkedList; import java.util.List; import java.util.Set; import javax.annotation.processing.Completion; import javax.annotation.processing.ProcessingEnvironment; import javax.annotation.processing.Processor; import javax.annotation.processing.RoundEnvironment; import javax.annotation.processing.SupportedAnnotationTypes; import javax.lang.model.SourceVersion; import javax.lang.model.element.AnnotationMirror; import javax.lang.model.element.Element; import javax.lang.model.element.ElementKind; import javax.lang.model.element.ExecutableElement; import javax.lang.model.element.TypeElement; import org.netbeans.api.java.source.ClassIndex; import org.netbeans.api.java.source.ClassIndex.SearchScope; import org.netbeans.api.java.source.ClasspathInfo; import org.netbeans.api.java.source.ElementHandle; import org.openide.filesystems.FileObject; import org.openide.filesystems.URLMapper; import org.openide.util.Exceptions; /** * * @author lahvac */ public class SupportedAnnotationTypesCompletion implements Processor { @Override public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) { return false; } @Override public Iterable<? extends Completion> getCompletions(Element element, AnnotationMirror annotation, ExecutableElement member, String userText) { ProcessingEnvironment processingEnv = this.processingEnv.get(); if (processingEnv == null) return Collections.emptyList(); TypeElement annotationObj = processingEnv.getElementUtils().getTypeElement("java.lang.annotation.Annotation"); if (annotationObj == null) return Collections.emptyList(); Trees trees = Trees.instance(processingEnv); TreePath path = trees.getPath(element); if (path == null) return Collections.emptyList(); FileObject owner; try { owner = URLMapper.findFileObject(path.getCompilationUnit().getSourceFile().toUri().toURL()); } catch (MalformedURLException ex) { Exceptions.printStackTrace(ex); return Collections.emptyList(); } ClassIndex ci = ClasspathInfo.create(owner).getClassIndex(); if (ci == null) return Collections.emptyList(); List<Completion> result = new LinkedList<Completion>(); // for (ElementHandle<TypeElement> eh : ci.getElements(ElementHandle.create(annotationObj), EnumSet.of(SearchKind.IMPLEMENTORS), EnumSet.of(SearchScope.DEPENDENCIES, SearchScope.SOURCE))) { // result.add(new CompletionImpl(eh.getQualifiedName())); // } for (ElementHandle<TypeElement> eh : ci.getDeclaredTypes("", ClassIndex.NameKind.PREFIX, EnumSet.of(SearchScope.DEPENDENCIES, SearchScope.SOURCE))) { if (eh.getKind() != ElementKind.ANNOTATION_TYPE) continue; result.add(new CompletionImpl('\"' + eh.getQualifiedName() + '\"')); } return result; } @Override public Set<String> getSupportedOptions() { return Collections.emptySet(); } private static final Set<String> supportedAnnotationTypes = new HashSet<String>(Arrays.asList(SupportedAnnotationTypes.class.getName())); @Override public Set<String> getSupportedAnnotationTypes() { return supportedAnnotationTypes; } @Override public SourceVersion getSupportedSourceVersion() { return SourceVersion.latest(); } private Reference<ProcessingEnvironment> processingEnv; @Override public void init(ProcessingEnvironment processingEnv) { this.processingEnv = new WeakReference<ProcessingEnvironment>(processingEnv); } private final class CompletionImpl implements Completion { private final String value; public CompletionImpl(String value) { this.value = value; } public String getValue() { return value; } public String getMessage() { return null; } } }