| /* |
| * 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.refactoring.java.plugins; |
| |
| import com.sun.source.tree.*; |
| import java.util.Collection; |
| import java.util.HashSet; |
| import java.util.logging.Level; |
| import java.util.logging.Logger; |
| import javax.lang.model.element.Element; |
| import javax.lang.model.element.ElementKind; |
| import javax.lang.model.element.ExecutableElement; |
| import org.netbeans.api.java.source.ElementHandle; |
| import org.netbeans.api.java.source.TreeUtilities; |
| import org.netbeans.modules.refactoring.java.spi.RefactoringVisitor; |
| import org.openide.filesystems.FileObject; |
| |
| /** |
| * |
| * @author Jan Becicka |
| */ |
| public class DeleteTransformer extends RefactoringVisitor { |
| |
| private final HashSet<ElementHandle<ExecutableElement>> allMethods; |
| private final Collection<? extends FileObject> files; |
| |
| DeleteTransformer(HashSet<ElementHandle<ExecutableElement>> allMethods, Collection<? extends FileObject> files) { |
| this.allMethods = allMethods; |
| this.files = files; |
| } |
| |
| @Override |
| public Tree visitCompilationUnit(CompilationUnitTree node, Element p) { |
| if(files.contains(workingCopy.getFileObject())) { |
| return null; |
| } |
| return super.visitCompilationUnit(node, p); |
| } |
| |
| @Override |
| public Tree visitMethod(MethodTree tree, Element p) { |
| deleteDeclIfMatch(tree, p); |
| return super.visitMethod(tree, p); |
| } |
| |
| @Override |
| public Tree visitClass(ClassTree tree, Element p) { |
| deleteDeclIfMatch(tree, p); |
| return super.visitClass(tree, p); |
| } |
| |
| @Override |
| public Tree visitVariable(VariableTree tree, Element p) { |
| deleteDeclIfMatch(tree, p); |
| return super.visitVariable(tree, p); |
| } |
| |
| private void deleteDeclIfMatch(Tree tree, Element elementToFind) { |
| if (JavaPluginUtils.isSyntheticPath(workingCopy, getCurrentPath())) { |
| return ; |
| } |
| |
| Element el = workingCopy.getTrees().getElement(getCurrentPath()); |
| if (isMatch(el, elementToFind)) { |
| Tree parent = getCurrentPath().getParentPath().getLeaf(); |
| Tree newOne = null; |
| if (TreeUtilities.CLASS_TREE_KINDS.contains(parent.getKind())) { |
| newOne = make.removeClassMember((ClassTree) parent, tree); |
| } else if (parent.getKind() == Tree.Kind.COMPILATION_UNIT) { |
| newOne = make.removeCompUnitTypeDecl((CompilationUnitTree) parent, tree); |
| } else if (tree.getKind() == Tree.Kind.VARIABLE) { |
| if (parent.getKind() == Tree.Kind.METHOD) { |
| newOne = make.removeMethodParameter((MethodTree)parent, (VariableTree) tree); |
| } else { |
| newOne = make.removeBlockStatement((BlockTree)parent, (VariableTree) tree); |
| } |
| } |
| if (newOne!=null) { |
| rewrite(parent,newOne); |
| } |
| } |
| } |
| |
| private boolean isMatch(Element element, Element elementToFind) { |
| if(element == null) { |
| return false; |
| } |
| if(allMethods == null || element.getKind() != ElementKind.METHOD) { |
| return element.equals(elementToFind); |
| } else { |
| for (ElementHandle<ExecutableElement> mh: allMethods) { |
| ExecutableElement baseMethod = mh.resolve(workingCopy); |
| if (baseMethod==null) { |
| Logger.getLogger("org.netbeans.modules.refactoring.java").log(Level.INFO, "DeleteTransformer cannot resolve {0}", mh); |
| continue; |
| } |
| if (baseMethod.equals(element) || workingCopy.getElements().overrides((ExecutableElement)element, baseMethod, workingCopy.getElementUtilities().enclosingTypeElement(baseMethod))) { |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| } |