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 libcore.reflect; 18 19import java.lang.reflect.ParameterizedType; 20import java.lang.reflect.Type; 21 22public final class ParameterizedTypeImpl implements ParameterizedType { 23 private final ListOfTypes args; 24 private final ParameterizedTypeImpl ownerType0; // Potentially unresolved. 25 private Type ownerTypeRes; 26 private Class rawType; // Already resolved. 27 private final String rawTypeName; 28 private ClassLoader loader; 29 30 public ParameterizedTypeImpl(ParameterizedTypeImpl ownerType, String rawTypeName, 31 ListOfTypes args, ClassLoader loader) { 32 this.ownerType0 = ownerType; 33 this.rawTypeName = rawTypeName; 34 this.args = args; 35 this.loader = loader; 36 } 37 38 39 public Type[] getActualTypeArguments() { 40 // ASSUMPTION: args is never null!!! 41 return args.getResolvedTypes().clone(); 42 } 43 44 public Type getOwnerType() { 45 if (ownerTypeRes == null) { 46 if (ownerType0 != null) { 47 ownerTypeRes = ownerType0.getResolvedType(); 48 } else { 49 ownerTypeRes = getRawType().getDeclaringClass(); 50 } 51 } 52 return ownerTypeRes; 53 } 54 55 public Class getRawType() { 56 if (rawType == null) { 57 // Here the actual loading of the class has to be performed and the 58 // Exceptions have to be re-thrown TypeNotPresent... 59 // How to deal with member (nested) classes? 60 try { 61 rawType = Class.forName(rawTypeName, false, loader); 62 } catch (ClassNotFoundException e) { 63 throw new TypeNotPresentException(rawTypeName, e); 64 } 65 } 66 return rawType; 67 } 68 69 70 Type getResolvedType() { 71 if (args.getResolvedTypes().length == 0) { 72 return getRawType(); 73 } else { 74 return this; 75 } 76 } 77 78 @Override 79 public String toString() { 80 StringBuilder sb = new StringBuilder(); 81 sb.append(rawTypeName); 82 if (args.length() > 0) { 83 sb.append("<").append(args).append(">"); 84 } 85 return sb.toString(); 86 } 87} 88