| /** |
| * 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; |
| |
| /** |
| * Created by furture on 2017/8/28. |
| */ |
| public class Token { |
| |
| /** |
| * token's type |
| * */ |
| public static final int TYPE_IDENTIFIER = 0; |
| public static final int TYPE_INT = 1; |
| public static final int TYPE_DOUBLE = 2; |
| public static final int TYPE_STRING = 3; |
| public static final int TYPE_KEYWORD = 4; |
| public static final int TYPE_OPERATOR = 5; |
| public static final int TYPE_BLOCK = 6; |
| |
| public static final int TYPE_ARRAY = 7; |
| |
| |
| |
| private String token; |
| private int type; |
| |
| public Token(String token, int type){ |
| this.token = token; |
| this.type = type; |
| } |
| |
| |
| /** |
| * stack should use array stack. |
| * execute token in context, and return value. |
| * */ |
| public Object execute(Object context){ |
| if(type == TYPE_IDENTIFIER){ |
| return Operators.el(context, token); |
| }else if(type == TYPE_STRING){ |
| return token; |
| }else if(type == TYPE_INT){ |
| try{ |
| return Integer.parseInt(token); |
| }catch (Exception e){ |
| return 0; |
| } |
| }else if(type == TYPE_DOUBLE){ |
| try{ |
| return Double.parseDouble(token); |
| }catch (Exception e){ |
| return 0; |
| } |
| }else if(type == TYPE_KEYWORD){ |
| return Operators.KEYWORDS.get(token); |
| } |
| throw new IllegalArgumentException("unhandled token type " + type); |
| } |
| |
| @Override |
| public String toString() { |
| return "{" + token + "," + type + '}'; |
| } |
| |
| public String getToken() { |
| return token; |
| } |
| |
| public int getType() { |
| return type; |
| } |
| } |