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| Original file line number | Diff line number | Diff line change |
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| /* | ||
| * Copyright (C) 2017 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. | ||
| */ | ||
|
|
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| package dagger.internal; | ||
|
|
||
| import java.util.ArrayList; | ||
| import java.util.Collection; | ||
| import java.util.Collections; | ||
| import java.util.HashSet; | ||
| import java.util.List; | ||
| import java.util.Set; | ||
|
|
||
| /** | ||
| * A fluent builder class that returns a {@link Set}. Used in component implementations where a set | ||
| * must be created in one fluent statement for inlined request fulfillments. | ||
| */ | ||
| public final class SetBuilder<T> { | ||
| private final List<T> contributions; | ||
|
|
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| private SetBuilder(int estimatedSize) { | ||
| contributions = new ArrayList<>(estimatedSize); | ||
| } | ||
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|
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| /** | ||
| * {@code estimatedSize} is the number of bindings which contribute to the set. They may each | ||
| * provide {@code [0..n)} instances to the set. Because the final size is unknown, {@code | ||
| * contributions} are collected in a list and only hashed in {@link #create()}. | ||
| */ | ||
| public static <T> SetBuilder<T> newSetBuilder(int estimatedSize) { | ||
| return new SetBuilder<T>(estimatedSize); | ||
| } | ||
|
|
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| public SetBuilder<T> add(T t) { | ||
| contributions.add(t); | ||
| return this; | ||
| } | ||
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| public SetBuilder<T> addAll(Collection<? extends T> collection) { | ||
| contributions.addAll(collection); | ||
| return this; | ||
| } | ||
|
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| public Set<T> create() { | ||
| switch (contributions.size()) { | ||
| case 0: | ||
| return Collections.emptySet(); | ||
| case 1: | ||
| return Collections.singleton(contributions.get(0)); | ||
| default: | ||
| return Collections.unmodifiableSet(new HashSet<>(contributions)); | ||
| } | ||
| } | ||
| } |
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121 changes: 121 additions & 0 deletions
121
java/dagger/internal/codegen/SetBindingRequestFulfillment.java
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| @@ -0,0 +1,121 @@ | ||
| /* | ||
| * Copyright (C) 2017 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. | ||
| */ | ||
|
|
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| package dagger.internal.codegen; | ||
|
|
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| import static com.google.common.collect.Iterables.getOnlyElement; | ||
| import static com.squareup.javapoet.CodeBlock.of; | ||
| import static dagger.internal.codegen.Accessibility.isTypeAccessibleFrom; | ||
|
|
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| import com.google.common.collect.ImmutableMap; | ||
| import com.squareup.javapoet.ClassName; | ||
| import com.squareup.javapoet.CodeBlock; | ||
| import dagger.internal.SetBuilder; | ||
| import java.util.Collections; | ||
| import javax.lang.model.type.TypeMirror; | ||
|
|
||
| /** | ||
| * A {@link RequestFulfillment} for {@link | ||
| * dagger.internal.codegen.ContributionBinding.Kind#SYNTHETIC_MULTIBOUND_SET} | ||
| */ | ||
| final class SetBindingRequestFulfillment extends SimpleInvocationRequestFulfillment { | ||
| private final ProvisionBinding binding; | ||
| private final ImmutableMap<BindingKey, ResolvedBindings> resolvedBindingsMap; | ||
| private final RequestFulfillmentRegistry registry; | ||
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| SetBindingRequestFulfillment( | ||
| BindingKey bindingKey, | ||
| ProvisionBinding binding, | ||
| ImmutableMap<BindingKey, ResolvedBindings> resolvedBindingsMap, | ||
| RequestFulfillmentRegistry registry, | ||
| RequestFulfillment delegate) { | ||
| super(bindingKey, delegate); | ||
| this.binding = binding; | ||
| this.resolvedBindingsMap = resolvedBindingsMap; | ||
| this.registry = registry; | ||
| } | ||
|
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| @Override | ||
| CodeBlock getSimpleInvocation(DependencyRequest request, ClassName requestingClass) { | ||
| // TODO(ronshapiro): if you have ImmutableSet on your classpath, use ImmutableSet.Builder | ||
| // otherwise, we can consider providing our own static factories for multibinding cases where | ||
| // all of the dependencies are @IntoSet | ||
| switch (binding.dependencies().size()) { | ||
| case 0: | ||
| return collectionsStaticFactoryInvocation( | ||
| request, requestingClass, CodeBlock.of("emptySet()")); | ||
| case 1: | ||
| { | ||
| DependencyRequest dependency = getOnlyElement(binding.dependencies()); | ||
| if (isSingleValue(dependency)) { | ||
| return collectionsStaticFactoryInvocation( | ||
| request, | ||
| requestingClass, | ||
| CodeBlock.of( | ||
| "singleton($L)", | ||
| getRequestFulfillmentForDependency(dependency, requestingClass))); | ||
| } | ||
| } | ||
| // fall through | ||
| default: | ||
| CodeBlock.Builder instantiation = CodeBlock.builder(); | ||
| instantiation | ||
| .add("$T.", SetBuilder.class) | ||
| .add(maybeTypeParameter(request, requestingClass)) | ||
| .add("newSetBuilder($L)", binding.dependencies().size()); | ||
| for (DependencyRequest dependency : binding.dependencies()) { | ||
| String builderMethod = isSingleValue(dependency) ? "add" : "addAll"; | ||
| instantiation.add( | ||
| ".$L($L)", | ||
| builderMethod, | ||
| getRequestFulfillmentForDependency(dependency, requestingClass)); | ||
| } | ||
| return instantiation.add(".create()").build(); | ||
| } | ||
| } | ||
|
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| private CodeBlock getRequestFulfillmentForDependency( | ||
| DependencyRequest dependency, ClassName requestingClass) { | ||
| return registry | ||
| .getRequestFulfillment(dependency.bindingKey()) | ||
| .getSnippetForDependencyRequest(dependency, requestingClass); | ||
| } | ||
|
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| private static CodeBlock collectionsStaticFactoryInvocation( | ||
| DependencyRequest request, ClassName requestingClass, CodeBlock methodInvocation) { | ||
| return CodeBlock.builder() | ||
| .add("$T.", Collections.class) | ||
| .add(maybeTypeParameter(request, requestingClass)) | ||
| .add(methodInvocation) | ||
| .build(); | ||
| } | ||
|
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| private static CodeBlock maybeTypeParameter( | ||
| DependencyRequest request, ClassName requestingClass) { | ||
| TypeMirror elementType = SetType.from(request.key()).elementType(); | ||
| return isTypeAccessibleFrom(elementType, requestingClass.packageName()) | ||
| ? of("<$T>", elementType) | ||
| : of(""); | ||
| } | ||
|
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| private boolean isSingleValue(DependencyRequest dependency) { | ||
| return resolvedBindingsMap | ||
| .get(dependency.bindingKey()) | ||
| .contributionBinding() | ||
| .contributionType() | ||
| .equals(ContributionType.SET); | ||
| } | ||
| } |
56 changes: 56 additions & 0 deletions
56
java/dagger/internal/codegen/SimpleInvocationRequestFulfillment.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,56 @@ | ||
| /* | ||
| * Copyright (C) 2016 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. | ||
| */ | ||
|
|
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| package dagger.internal.codegen; | ||
|
|
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| import com.google.common.util.concurrent.Futures; | ||
| import com.squareup.javapoet.ClassName; | ||
| import com.squareup.javapoet.CodeBlock; | ||
|
|
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| /** | ||
| * A {@link RequestFulfillment} that can fulfill its request with a simple call when possible, and | ||
| * otherwise delegates to a backing provider field. | ||
| */ | ||
| abstract class SimpleInvocationRequestFulfillment extends RequestFulfillment { | ||
| private final RequestFulfillment delegate; | ||
|
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| SimpleInvocationRequestFulfillment(BindingKey bindingKey, RequestFulfillment delegate) { | ||
| super(bindingKey); | ||
| this.delegate = delegate; | ||
| } | ||
|
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| abstract CodeBlock getSimpleInvocation(DependencyRequest request, ClassName requestingClass); | ||
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| @Override | ||
| final CodeBlock getSnippetForDependencyRequest( | ||
| DependencyRequest request, ClassName requestingClass) { | ||
| switch (request.kind()) { | ||
| case INSTANCE: | ||
| return getSimpleInvocation(request, requestingClass); | ||
| case FUTURE: | ||
| return CodeBlock.of( | ||
| "$T.immediateFuture($L)", Futures.class, getSimpleInvocation(request, requestingClass)); | ||
| default: | ||
| return delegate.getSnippetForDependencyRequest(request, requestingClass); | ||
| } | ||
| } | ||
|
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| @Override | ||
| final CodeBlock getSnippetForFrameworkDependency( | ||
| FrameworkDependency frameworkDependency, ClassName requestingClass) { | ||
| return delegate.getSnippetForFrameworkDependency(frameworkDependency, requestingClass); | ||
| } | ||
| } |
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