46 lines
1.7 KiB
Java
46 lines
1.7 KiB
Java
/*
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* Copyright (C) 2017 The Dagger Authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package dagger.android.processor;
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import static com.google.auto.common.AnnotationMirrors.getAnnotationValue;
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import com.google.auto.common.MoreTypes;
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import dagger.android.AndroidInjectionKey;
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import java.util.Optional;
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import javax.lang.model.element.AnnotationMirror;
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import javax.lang.model.element.TypeElement;
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import javax.lang.model.type.TypeMirror;
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final class AndroidMapKeys {
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/**
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* If {@code mapKey} is {@link AndroidInjectionKey}, returns the string value for the map key. If
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* it's {@link dagger.multibindings.ClassKey}, returns the fully-qualified class name of the
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* annotation value. Otherwise returns {@link Optional#empty()}.
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*/
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static Optional<String> injectedTypeFromMapKey(AnnotationMirror mapKey) {
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Object mapKeyClass = getAnnotationValue(mapKey, "value").getValue();
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if (mapKeyClass instanceof String) {
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return Optional.of((String) mapKeyClass);
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} else if (mapKeyClass instanceof TypeMirror) {
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TypeElement type = MoreTypes.asTypeElement((TypeMirror) mapKeyClass);
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return Optional.of(type.getQualifiedName().toString());
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} else {
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return Optional.empty();
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}
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}
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}
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