1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package org.apache.harmony.luni.lang.reflect; 18 19import java.lang.reflect.Type; 20import java.util.ArrayList; 21 22public class ListOfTypes { 23 static final ListOfTypes empty = new ListOfTypes(0); 24 25 ArrayList<Type> list; 26 private Type[] resolvedTypes; 27 28 void add(Type elem) { 29 if (elem == null) { 30 throw new RuntimeException("Adding null type is not allowed!"); 31 } 32 list.add(elem); 33 } 34 35 ListOfTypes(int capacity) { 36 list = new ArrayList<Type>(capacity); 37 } 38 39 ListOfTypes(Type[] types) { 40 list = new ArrayList<Type>(); 41 for(Type t : types) { 42 list.add(t); 43 } 44 } 45 46 int length() { 47 return list.size(); 48 } 49 50 @Override 51 public String toString() { 52 StringBuilder sb = new StringBuilder(); 53 int i = 0; 54 for (Type t : list) { 55 if (i != 0) { sb.append(", "); } 56 sb.append(t.toString()); 57 } 58 return sb.toString(); 59 } 60 61 // Returns not null, but maybe an array of length 0. 62 public Type[] getResolvedTypes() { 63 if (resolvedTypes == null) { 64 resolvedTypes = new Type[list.size()]; 65 int i = 0; 66 for (Type t : list) { 67 try { 68 resolvedTypes[i] = ((ImplForType)t).getResolvedType(); 69 } catch (ClassCastException e) { 70 resolvedTypes[i] = t; 71 } 72 i++; 73 } 74 list = null; 75 } 76 return resolvedTypes; 77 } 78} 79