56 lines
2.5 KiB
Java
56 lines
2.5 KiB
Java
/*
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* Copyright (C) 2018 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.internal.codegen;
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import dagger.Module;
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import dagger.Provides;
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import dagger.internal.GenerationOptions;
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import dagger.internal.codegen.langmodel.DaggerElements;
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import java.util.Optional;
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/** Adds bindings for serializing and rereading {@link GenerationOptions}. */
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@Module
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interface GenerationOptionsModule {
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@Provides
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@PerComponentImplementation
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@GenerationCompilerOptions
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static CompilerOptions generationOptions(
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CompilerOptions defaultOptions,
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ComponentImplementation componentImplementation,
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DaggerElements elements) {
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// Avoid looking up types that don't exist. Performance improves for large components.
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if (!defaultOptions.aheadOfTimeSubcomponents()) {
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return defaultOptions;
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}
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// Inspect the base implementation for the @GenerationOptions annotation. Even if
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// componentImplementation is the base implementation, inspect it for the case where we are
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// recomputing the ComponentImplementation from a previous compilation.
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// TODO(b/117833324): consider adding a method that returns baseImplementation.orElse(this).
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// The current state of the world is a little confusing and maybe not intuitive: the base
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// implementation has no base implementation, but it _is_ a base implementation.
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return Optional.of(componentImplementation.baseImplementation().orElse(componentImplementation))
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.map(baseImplementation -> elements.getTypeElement(baseImplementation.name()))
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// If this returns null, the type has not been generated yet and Optional will switch to an
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// empty state. This means that we're currently generating componentImplementation, or that
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// the base implementation is being generated in this round, and thus the options passed to
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// this compilation are applicable
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.map(typeElement -> typeElement.getAnnotation(GenerationOptions.class))
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.map(defaultOptions::withGenerationOptions)
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.orElse(defaultOptions);
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}
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}
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