| /* |
| * Copyright (C) 2014 The Dagger Authors. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package dagger.internal.codegen.binding; |
| |
| import static dagger.internal.codegen.extension.DaggerStreams.toImmutableSet; |
| import static dagger.internal.codegen.langmodel.DaggerTypes.isFutureType; |
| |
| import com.google.auto.value.AutoValue; |
| import com.google.auto.value.extension.memoized.Memoized; |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.collect.ImmutableSet; |
| import com.google.errorprone.annotations.CanIgnoreReturnValue; |
| import dagger.internal.codegen.base.ContributionType; |
| import dagger.internal.codegen.base.SetType; |
| import dagger.model.DependencyRequest; |
| import dagger.model.Key; |
| import java.util.Optional; |
| import java.util.stream.Stream; |
| import javax.lang.model.element.ExecutableElement; |
| import javax.lang.model.type.TypeMirror; |
| |
| /** A value object representing the mechanism by which a {@link Key} can be produced. */ |
| @AutoValue |
| public abstract class ProductionBinding extends ContributionBinding { |
| |
| @Override |
| public BindingType bindingType() { |
| return BindingType.PRODUCTION; |
| } |
| |
| @Override |
| public abstract Optional<ProductionBinding> unresolved(); |
| |
| @Override |
| public ImmutableSet<DependencyRequest> implicitDependencies() { |
| return Stream.of(executorRequest(), monitorRequest()) |
| .filter(Optional::isPresent) |
| .map(Optional::get) |
| .collect(toImmutableSet()); |
| } |
| |
| /** What kind of object a {@code @Produces}-annotated method returns. */ |
| public enum ProductionKind { |
| /** A value. */ |
| IMMEDIATE, |
| /** A {@code ListenableFuture<T>}. */ |
| FUTURE, |
| /** A {@code Set<ListenableFuture<T>>}. */ |
| SET_OF_FUTURE; |
| |
| /** Returns the kind of object a {@code @Produces}-annotated method returns. */ |
| public static ProductionKind fromProducesMethod(ExecutableElement producesMethod) { |
| if (isFutureType(producesMethod.getReturnType())) { |
| return FUTURE; |
| } else if (ContributionType.fromBindingElement(producesMethod) |
| .equals(ContributionType.SET_VALUES) |
| && isFutureType(SetType.from(producesMethod.getReturnType()).elementType())) { |
| return SET_OF_FUTURE; |
| } else { |
| return IMMEDIATE; |
| } |
| } |
| } |
| |
| /** |
| * Returns the kind of object the produces method returns. All production bindings from |
| * {@code @Produces} methods will have a production kind, but synthetic production bindings may |
| * not. |
| */ |
| public abstract Optional<ProductionKind> productionKind(); |
| |
| /** Returns the list of types in the throws clause of the method. */ |
| public abstract ImmutableList<? extends TypeMirror> thrownTypes(); |
| |
| /** |
| * If this production requires an executor, this will be the corresponding request. All |
| * production bindings from {@code @Produces} methods will have an executor request, but |
| * synthetic production bindings may not. |
| */ |
| abstract Optional<DependencyRequest> executorRequest(); |
| |
| /** If this production requires a monitor, this will be the corresponding request. All |
| * production bindings from {@code @Produces} methods will have a monitor request, but synthetic |
| * production bindings may not. |
| */ |
| abstract Optional<DependencyRequest> monitorRequest(); |
| |
| // Profiling determined that this method is called enough times that memoizing it had a measurable |
| // performance improvement for large components. |
| @Memoized |
| @Override |
| public boolean requiresModuleInstance() { |
| return super.requiresModuleInstance(); |
| } |
| |
| public static Builder builder() { |
| return new AutoValue_ProductionBinding.Builder() |
| .explicitDependencies(ImmutableList.<DependencyRequest>of()) |
| .thrownTypes(ImmutableList.<TypeMirror>of()); |
| } |
| |
| @Override |
| public abstract Builder toBuilder(); |
| |
| @Memoized |
| @Override |
| public abstract int hashCode(); |
| |
| // TODO(ronshapiro,dpb): simplify the equality semantics |
| @Override |
| public abstract boolean equals(Object obj); |
| |
| /** A {@link ProductionBinding} builder. */ |
| @AutoValue.Builder |
| @CanIgnoreReturnValue |
| public abstract static class Builder |
| extends ContributionBinding.Builder<ProductionBinding, Builder> { |
| |
| @Override |
| public Builder dependencies(Iterable<DependencyRequest> dependencies) { |
| return explicitDependencies(dependencies); |
| } |
| |
| abstract Builder explicitDependencies(Iterable<DependencyRequest> dependencies); |
| |
| abstract Builder productionKind(ProductionKind productionKind); |
| |
| @Override |
| public abstract Builder unresolved(ProductionBinding unresolved); |
| |
| abstract Builder thrownTypes(Iterable<? extends TypeMirror> thrownTypes); |
| |
| abstract Builder executorRequest(DependencyRequest executorRequest); |
| |
| abstract Builder monitorRequest(DependencyRequest monitorRequest); |
| } |
| } |