1 /* 2 * Copyright (C) 2017 The Dagger Authors. 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 dagger.android.processor; 18 19 import androidx.room.compiler.processing.XAnnotation; 20 import androidx.room.compiler.processing.XAnnotationValue; 21 import java.util.Optional; 22 23 final class AndroidMapKeys { 24 /** 25 * If {@code mapKey} is {@code AndroidInjectionKey}, returns the string value for the map key. If 26 * it's {@link dagger.multibindings.ClassKey}, returns the fully-qualified class name of the 27 * annotation value. Otherwise returns {@link Optional#empty()}. 28 */ injectedTypeFromMapKey(XAnnotation mapKey)29 static Optional<String> injectedTypeFromMapKey(XAnnotation mapKey) { 30 XAnnotationValue mapKeyClass = mapKey.getAnnotationValue("value"); 31 if (mapKeyClass.hasStringValue()) { 32 return Optional.of(mapKeyClass.asString()); 33 } else if (mapKeyClass.hasTypeValue()) { 34 return Optional.of(mapKeyClass.asType().getTypeElement().getQualifiedName()); 35 } else { 36 return Optional.empty(); 37 } 38 } 39 } 40