| /* |
| * 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.css.lib; |
| |
| import java.util.Collections; |
| import java.util.List; |
| import org.antlr.runtime.tree.ParseTree; |
| import org.antlr.runtime.tree.Tree; |
| import org.netbeans.modules.css.lib.api.Node; |
| |
| /** |
| * |
| * @author marekfukala |
| */ |
| public abstract class AbstractParseTreeNode extends ParseTree implements Node { |
| |
| Tree parent; |
| |
| private CharSequence source; |
| |
| public AbstractParseTreeNode(CharSequence source) { |
| super(null); |
| this.source = source; |
| } |
| |
| protected CharSequence getSource() { |
| return source; |
| } |
| |
| @Override |
| public CharSequence image() { |
| return getSource().subSequence(from(), to()); |
| } |
| |
| public boolean deleteChild(AbstractParseTreeNode node) { |
| if (children == null) { |
| return false; |
| } |
| int childIndex = children.indexOf(node); |
| if (childIndex == -1) { |
| return false; //no such node |
| } |
| |
| return super.deleteChild(childIndex) != null; |
| } |
| |
| /** BaseTree doesn't track parent pointers. */ |
| @Override |
| public Tree getParent() { |
| return parent; |
| } |
| |
| @Override |
| public void setParent(Tree t) { |
| this.parent = t; |
| } |
| |
| @Override |
| @SuppressWarnings(value="unchecked") //antlr 3.3 does not use generics |
| public List<Node> children() { |
| List<Node> ch = getChildren(); |
| return ch == null ? Collections.<Node>emptyList() : ch; |
| } |
| |
| @Override |
| public Node parent() { |
| return (Node)getParent(); |
| } |
| |
| @Override |
| public String toString() { |
| return new StringBuilder() |
| .append(type()) |
| .append('(') |
| .append(from()) |
| .append('-') |
| .append(to()) |
| .append(')') |
| .toString(); |
| } |
| |
| } |