| /* |
| * 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 com.sun.source.util.TreePath; |
| import com.sun.source.util.Trees; |
| import java.util.Iterator; |
| import javax.lang.model.element.Element; |
| import javax.lang.model.element.Name; |
| import javax.lang.model.type.TypeMirror; |
| import org.netbeans.api.java.source.ElementUtilities; |
| import org.netbeans.api.java.source.GeneratorUtilities; |
| import org.netbeans.api.java.source.SourceUtils; |
| import org.netbeans.api.java.source.TreePathHandle; |
| import org.netbeans.api.java.source.WorkingCopy; |
| import org.netbeans.modules.refactoring.java.spi.RefactoringVisitor; |
| import org.netbeans.modules.refactoring.java.spi.ToPhaseException; |
| import org.openide.filesystems.FileObject; |
| |
| /** |
| * |
| * @author Ralph Ruijs |
| */ |
| public class InlineVariableTransformer extends RefactoringVisitor { |
| |
| private final FileObject sourceFile; |
| |
| public InlineVariableTransformer(TreePathHandle treePathHandle) { |
| this.sourceFile = treePathHandle.getFileObject(); |
| } |
| |
| |
| @Override |
| public void setWorkingCopy(WorkingCopy workingCopy) throws ToPhaseException { |
| SourceUtils.forceSource(workingCopy, sourceFile); |
| super.setWorkingCopy(workingCopy); |
| } |
| |
| @Override |
| public Tree visitIdentifier(IdentifierTree node, Element p) { |
| replaceUsageIfMatch(getCurrentPath(), node, p); |
| return super.visitIdentifier(node, p); |
| } |
| |
| @Override |
| public Tree visitMemberSelect(MemberSelectTree node, Element p) { |
| replaceUsageIfMatch(getCurrentPath(), node, p); |
| return super.visitMemberSelect(node, p); |
| } |
| |
| private void replaceUsageIfMatch(TreePath path, Tree tree, Element elementToFind) { |
| if (workingCopy.getTreeUtilities().isSynthetic(path)) { |
| return; |
| } |
| Trees trees = workingCopy.getTrees(); |
| Element el = workingCopy.getTrees().getElement(path); |
| if (el == null) { |
| path = path.getParentPath(); |
| if (path != null && path.getLeaf().getKind() == Tree.Kind.IMPORT) { |
| ImportTree impTree = (ImportTree) path.getLeaf(); |
| if (!impTree.isStatic()) { |
| return; |
| } |
| Tree idTree = impTree.getQualifiedIdentifier(); |
| if (idTree.getKind() != Tree.Kind.MEMBER_SELECT) { |
| return; |
| } |
| final Name id = ((MemberSelectTree) idTree).getIdentifier(); |
| if (id == null || id.contentEquals("*")) { // NOI18N |
| // skip import static java.lang.Math.* |
| return; |
| } |
| Tree classTree = ((MemberSelectTree) idTree).getExpression(); |
| path = trees.getPath(workingCopy.getCompilationUnit(), classTree); |
| el = trees.getElement(path); |
| if (el == null) { |
| return; |
| } |
| Iterator<? extends Element> iter = workingCopy.getElementUtilities().getMembers(el.asType(), new ElementUtilities.ElementAcceptor() { |
| |
| @Override |
| public boolean accept(Element e, TypeMirror type) { |
| return id.equals(e.getSimpleName()); |
| } |
| }).iterator(); |
| if (iter.hasNext()) { |
| el = iter.next(); |
| } |
| if (iter.hasNext()) { |
| return; |
| } |
| } else { |
| return; |
| } |
| } |
| if (el.equals(elementToFind)) { |
| GeneratorUtilities genUtils = GeneratorUtilities.get(workingCopy); |
| TreePath resolvedPath = trees.getPath(elementToFind); |
| VariableTree varTree = (VariableTree)resolvedPath.getLeaf(); |
| varTree = genUtils.importComments(varTree, resolvedPath.getCompilationUnit()); |
| ExpressionTree body = varTree.getInitializer(); |
| |
| boolean parenthesize = OperatorPrecedence.needsParentheses(path, elementToFind, varTree.getInitializer(), workingCopy); |
| if (parenthesize) { |
| body = make.Parenthesized((ExpressionTree) body); |
| } |
| |
| genUtils.copyComments(varTree, body, true); |
| rewrite(tree, body); |
| } |
| } |
| |
| @Override |
| public Tree visitVariable(VariableTree node, Element p) { |
| Element el = workingCopy.getTrees().getElement(getCurrentPath()); |
| if (p.equals(el)) { |
| Tree parent = getCurrentPath().getParentPath().getLeaf(); |
| switch(el.getKind()) { |
| case LOCAL_VARIABLE: |
| Tree newOne = null; |
| if(parent.getKind() == Tree.Kind.CASE) { |
| newOne = make.removeCaseStatement((CaseTree) parent, node); |
| } else { |
| newOne = make.removeBlockStatement((BlockTree) parent, node); |
| } |
| if (newOne != null) { |
| rewrite(parent, newOne); |
| } |
| break; |
| case FIELD: |
| ClassTree removeClassMember = make.removeClassMember((ClassTree)parent, node); |
| if (removeClassMember != null) { |
| rewrite(parent, removeClassMember); |
| } |
| break; |
| } |
| } |
| return super.visitVariable(node, p); |
| } |
| } |