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 17 package libcore.reflect; 18 19 import java.lang.reflect.MalformedParameterizedTypeException; 20 import java.lang.reflect.Type; 21 import java.lang.reflect.WildcardType; 22 import java.util.Arrays; 23 24 public final class WildcardTypeImpl implements WildcardType { 25 26 private final ListOfTypes extendsBound, superBound; 27 28 public WildcardTypeImpl(ListOfTypes extendsBound, ListOfTypes superBound) { 29 this.extendsBound = extendsBound; 30 this.superBound = superBound; 31 } 32 33 public Type[] getLowerBounds() throws TypeNotPresentException, 34 MalformedParameterizedTypeException { 35 return superBound.getResolvedTypes().clone(); 36 } 37 38 public Type[] getUpperBounds() throws TypeNotPresentException, 39 MalformedParameterizedTypeException { 40 return extendsBound.getResolvedTypes().clone(); 41 } 42 43 @Override 44 public boolean equals(Object o) { 45 if(!(o instanceof WildcardType)) { 46 return false; 47 } 48 WildcardType that = (WildcardType) o; 49 return Arrays.equals(getLowerBounds(), that.getLowerBounds()) && 50 Arrays.equals(getUpperBounds(), that.getUpperBounds()); 51 } 52 53 @Override 54 public int hashCode() { 55 return 31 * Arrays.hashCode(getLowerBounds()) + 56 Arrays.hashCode(getUpperBounds()); 57 } 58 59 @Override 60 public String toString() { 61 StringBuilder sb = new StringBuilder("?"); 62 if ((extendsBound.length() == 1 && extendsBound.getResolvedTypes()[0] != Object.class) 63 || extendsBound.length() > 1) { 64 sb.append(" extends ").append(extendsBound); 65 } else if (superBound.length() > 0) { 66 sb.append(" super ").append(superBound); 67 } 68 return sb.toString(); 69 } 70 } 71
