| /* |
| * 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.web.el; |
| |
| import com.sun.el.parser.Node; |
| import com.sun.el.parser.NodeVisitor; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| import javax.el.ELException; |
| import org.openide.util.Parameters; |
| |
| /** |
| * AST path for Expression Language AST nodes. |
| * |
| * @author Erno Mononen |
| */ |
| public final class AstPath { |
| |
| private final List<Node> nodes = new ArrayList<>(); |
| private final Node root; |
| |
| public AstPath(Node root) { |
| Parameters.notNull("root", root); |
| this.root = root; |
| init(); |
| } |
| |
| private void init() { |
| root.accept(new NodeVisitor() { |
| |
| @Override |
| public void visit(Node node) throws ELException { |
| nodes.add(node); |
| } |
| }); |
| } |
| |
| public Node getRoot() { |
| return root; |
| } |
| |
| public List<Node> rootToLeaf() { |
| return nodes; |
| } |
| |
| public List<Node> leafToRoot() { |
| List<Node> copy = new ArrayList<>(nodes); |
| Collections.reverse(copy); |
| return copy; |
| } |
| |
| public List<Node> rootToNode(Node target) { |
| return rootToNode(target, false); |
| } |
| |
| public List<Node> rootToNode(Node target, boolean inclusive) { |
| List<Node> result = new ArrayList<>(); |
| for (Node each : nodes) { |
| if (equalsNodes(each, target)) { |
| if (inclusive) { |
| result.add(each); |
| } |
| break; |
| } |
| result.add(each); |
| } |
| return result; |
| } |
| |
| private static boolean equalsNodes(Node src, Node target) { |
| if (src.equals(target)) { |
| // #228091 SimpleNode equal method doesn't check images in some cases |
| return src.getImage() == null || src.getImage().equals(target.getImage()); |
| } |
| return false; |
| } |
| |
| } |