| /* |
| * 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. |
| */ |
| |
| package dagger.android.processor; |
| |
| import static javax.tools.Diagnostic.Kind.ERROR; |
| import static net.ltgt.gradle.incap.IncrementalAnnotationProcessorType.ISOLATING; |
| |
| import com.google.auto.common.BasicAnnotationProcessor; |
| import com.google.auto.service.AutoService; |
| import com.google.common.base.Ascii; |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.collect.ImmutableSet; |
| import com.google.googlejavaformat.java.filer.FormattingFiler; |
| import java.util.Set; |
| import javax.annotation.processing.Filer; |
| import javax.annotation.processing.Messager; |
| import javax.annotation.processing.Processor; |
| import javax.lang.model.SourceVersion; |
| import javax.lang.model.util.Elements; |
| import javax.lang.model.util.Types; |
| import net.ltgt.gradle.incap.IncrementalAnnotationProcessor; |
| |
| /** |
| * An {@linkplain javax.annotation.processing.Processor annotation processor} to verify usage of |
| * {@code dagger.android} code. |
| * |
| * <p>Additionally, if {@code -Adagger.android.experimentalUseStringKeys} is passed to the |
| * compilation, a file will be generated to support obfuscated injected Android types used with |
| * {@code @AndroidInjectionKey}. The fact that this is generated is deliberate: not all versions of |
| * ProGuard/R8 support {@code -identifiernamestring}, so we can't include a ProGuard file in the |
| * dagger-android artifact Instead, we generate the file in {@code META-INF/proguard} only when |
| * users enable the flag. They should only be enabling it if their shrinker supports those files, |
| * and any version that does so will also support {@code -identifiernamestring}. This was added to |
| * R8 in <a href="https://r8.googlesource.com/r8/+/389123dfcc11e6dda0eec31ab62e1b7eb0da80d2">May |
| * 2018</a>. |
| */ |
| @IncrementalAnnotationProcessor(ISOLATING) |
| @AutoService(Processor.class) |
| public final class AndroidProcessor extends BasicAnnotationProcessor { |
| private static final String FLAG_EXPERIMENTAL_USE_STRING_KEYS = |
| "dagger.android.experimentalUseStringKeys"; |
| |
| @Override |
| protected Iterable<? extends ProcessingStep> initSteps() { |
| Filer filer = new FormattingFiler(processingEnv.getFiler()); |
| Messager messager = processingEnv.getMessager(); |
| Elements elements = processingEnv.getElementUtils(); |
| Types types = processingEnv.getTypeUtils(); |
| |
| return ImmutableList.of( |
| new AndroidMapKeyValidator(elements, types, messager), |
| new ContributesAndroidInjectorGenerator( |
| new AndroidInjectorDescriptor.Validator(messager), |
| useStringKeys(), |
| filer, |
| elements, |
| processingEnv.getSourceVersion())); |
| } |
| |
| private boolean useStringKeys() { |
| if (!processingEnv.getOptions().containsKey(FLAG_EXPERIMENTAL_USE_STRING_KEYS)) { |
| return false; |
| } |
| String flagValue = processingEnv.getOptions().get(FLAG_EXPERIMENTAL_USE_STRING_KEYS); |
| if (flagValue == null || Ascii.equalsIgnoreCase(flagValue, "true")) { |
| return true; |
| } else if (Ascii.equalsIgnoreCase(flagValue, "false")) { |
| return false; |
| } else { |
| processingEnv |
| .getMessager() |
| .printMessage( |
| ERROR, |
| String.format( |
| "Unknown flag value: %s. %s must be set to either 'true' or 'false'.", |
| flagValue, FLAG_EXPERIMENTAL_USE_STRING_KEYS)); |
| return false; |
| } |
| } |
| |
| @Override |
| public Set<String> getSupportedOptions() { |
| return ImmutableSet.of(FLAG_EXPERIMENTAL_USE_STRING_KEYS); |
| } |
| |
| @Override |
| public SourceVersion getSupportedSourceVersion() { |
| return SourceVersion.latestSupported(); |
| } |
| } |