| /** |
| * 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.apache.weex.el.parse; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * stack for parse and execute code |
| * Created by jianbai.gbj on 2017/9/1. |
| */ |
| public class ArrayStack<T> { |
| |
| private ArrayList<T> stack; |
| |
| public ArrayStack() { |
| this.stack = new ArrayList<T>(4); |
| } |
| |
| public int size() { |
| return stack.size(); |
| } |
| |
| public T pop() { |
| return stack.remove(stack.size()-1); |
| } |
| |
| public void push(T token) { |
| stack.add(token); |
| } |
| |
| |
| public T peek() { |
| return stack.get(stack.size()-1); |
| } |
| |
| public T get(int i) { |
| return stack.get(i); |
| } |
| |
| public T remove(int i) { |
| return stack.remove(i); |
| } |
| |
| public void add(int i, T t) { |
| stack.add(i, t); |
| } |
| |
| public boolean isEmpty() { |
| return stack.isEmpty(); |
| } |
| |
| public List<T> getList(){ |
| return stack; |
| } |
| } |