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Commit cb134c45 authored by TreeHugger Robot's avatar TreeHugger Robot Committed by Android (Google) Code Review
Browse files

Merge "Autogenerate SearchIndexableResources subclass"

parents e8f1cd80 18b03483

packages/SettingsLib/search/Android.mk

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LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)



LOCAL_MODULE = SettingsLib-search



LOCAL_SRC_FILES := $(call all-java-files-under, src)



include $(BUILD_STATIC_JAVA_LIBRARY)





include $(CLEAR_VARS)



LOCAL_MODULE = SettingsLib-search-host



LOCAL_SRC_FILES := $(call all-java-files-under, src)



include $(BUILD_HOST_JAVA_LIBRARY)





include $(CLEAR_VARS)



LOCAL_MODULE = SettingsLib-annotation-processor



LOCAL_STATIC_JAVA_LIBRARIES := \

    javapoet-prebuilt-jar \

    SettingsLib-search-host



LOCAL_SRC_FILES := $(call all-java-files-under, processor-src)



LOCAL_JAVA_RESOURCE_DIRS := \

    resources



include $(BUILD_HOST_JAVA_LIBRARY)

packages/SettingsLib/search/common.mk

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# Include this file to generate SearchIndexableResourcesImpl



LOCAL_ANNOTATION_PROCESSORS += \

    SettingsLib-annotation-processor



LOCAL_ANNOTATION_PROCESSOR_CLASSES += \

    com.android.settingslib.search.IndexableProcessor



LOCAL_STATIC_JAVA_LIBRARIES += \

    SettingsLib-search

packages/SettingsLib/search/processor-src/com/android/settingslib/search/IndexableProcessor.java

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/*

 * Copyright (C) 2018 The Android Open Source Project

 *

 * 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 com.android.settingslib.search;



import com.squareup.javapoet.ClassName;

import com.squareup.javapoet.FieldSpec;

import com.squareup.javapoet.JavaFile;

import com.squareup.javapoet.MethodSpec;

import com.squareup.javapoet.ParameterizedTypeName;

import com.squareup.javapoet.TypeName;

import com.squareup.javapoet.TypeSpec;



import java.io.IOException;

import java.util.Collection;

import java.util.HashSet;

import java.util.Set;



import javax.annotation.processing.AbstractProcessor;

import javax.annotation.processing.Filer;

import javax.annotation.processing.Messager;

import javax.annotation.processing.ProcessingEnvironment;

import javax.annotation.processing.RoundEnvironment;

import javax.annotation.processing.SupportedAnnotationTypes;

import javax.annotation.processing.SupportedSourceVersion;

import javax.lang.model.SourceVersion;

import javax.lang.model.element.Element;

import javax.lang.model.element.Modifier;

import javax.lang.model.element.Name;

import javax.lang.model.element.TypeElement;

import javax.lang.model.util.SimpleElementVisitor8;

import javax.tools.Diagnostic.Kind;



/**

 * Annotation processor for {@link SearchIndexable} that generates {@link SearchIndexableResources}

 * subclasses.

 */

@SupportedSourceVersion(SourceVersion.RELEASE_8)

@SupportedAnnotationTypes({"com.android.settingslib.search.SearchIndexable"})

public class IndexableProcessor extends AbstractProcessor {



    private static final String PACKAGE = "com.android.settingslib.search";

    private static final String CLASS_BASE = "SearchIndexableResourcesBase";

    private static final String CLASS_MOBILE = "SearchIndexableResourcesMobile";

    private static final String CLASS_TV = "SearchIndexableResourcesTv";

    private static final String CLASS_WEAR = "SearchIndexableResourcesWear";

    private static final String CLASS_AUTO = "SearchIndexableResourcesAuto";

    private static final String CLASS_ARC = "SearchIndexableResourcesArc";



    private Filer mFiler;

    private Messager mMessager;

    private boolean mRanOnce;



    @Override

    public boolean process(Set<? extends TypeElement> annotations,

            RoundEnvironment roundEnvironment) {

        if (mRanOnce) {

            // Will get called once per round, but we only want to run on the first one.

            return true;

        }

        mRanOnce = true;



        final FieldSpec providers = FieldSpec.builder(

                ParameterizedTypeName.get(

                        ClassName.get(Set.class),

                        TypeName.get(Class.class)),

                "mProviders",

                Modifier.PRIVATE, Modifier.FINAL)

                .initializer("new $T()", HashSet.class)

                .build();



        final MethodSpec addIndex = MethodSpec.methodBuilder("addIndex")

                .addModifiers(Modifier.PUBLIC)

                .addParameter(ClassName.get(Class.class), "indexClass")

                .addCode("$N.add(indexClass);\n", providers)

                .build();



        final MethodSpec.Builder baseConstructorBuilder = MethodSpec.constructorBuilder()

                .addModifiers(Modifier.PUBLIC);

        final MethodSpec.Builder mobileConstructorBuilder = MethodSpec.constructorBuilder()

                .addModifiers(Modifier.PUBLIC);

        final MethodSpec.Builder tvConstructorBuilder = MethodSpec.constructorBuilder()

                .addModifiers(Modifier.PUBLIC);

        final MethodSpec.Builder wearConstructorBuilder = MethodSpec.constructorBuilder()

                .addModifiers(Modifier.PUBLIC);

        final MethodSpec.Builder autoConstructorBuilder = MethodSpec.constructorBuilder()

                .addModifiers(Modifier.PUBLIC);

        final MethodSpec.Builder arcConstructorBuilder = MethodSpec.constructorBuilder()

                .addModifiers(Modifier.PUBLIC);



        for (Element element : roundEnvironment.getElementsAnnotatedWith(SearchIndexable.class)) {

            if (element.getKind().isClass()) {

                Name className = element.accept(new SimpleElementVisitor8<Name, Void>() {

                    @Override

                    public Name visitType(TypeElement typeElement, Void aVoid) {

                        return typeElement.getQualifiedName();

                    }

                }, null);

                if (className != null) {

                    SearchIndexable searchIndexable = element.getAnnotation(SearchIndexable.class);



                    int forTarget = searchIndexable.forTarget();

                    if (forTarget == SearchIndexable.ALL) {

                        baseConstructorBuilder.addCode("$N($L.class);\n", addIndex, className);

                    } else if ((forTarget & SearchIndexable.MOBILE) != 0) {

                        mobileConstructorBuilder.addCode("$N($L.class);\n", addIndex, className);

                    } else if ((forTarget & SearchIndexable.TV) != 0) {

                        tvConstructorBuilder.addCode("$N($L.class);\n", addIndex, className);

                    } else if ((forTarget & SearchIndexable.WEAR) != 0) {

                        wearConstructorBuilder.addCode("$N($L.class);\n", addIndex, className);

                    } else if ((forTarget & SearchIndexable.AUTO) != 0) {

                        autoConstructorBuilder.addCode("$N($L.class);\n", addIndex, className);

                    } else if ((forTarget & SearchIndexable.ARC) != 0) {

                        arcConstructorBuilder.addCode("$N($L.class);\n", addIndex, className);

                    }

                } else {

                    throw new IllegalStateException("Null classname from " + element);

                }

            }

        }



        final MethodSpec getProviderValues = MethodSpec.methodBuilder("getProviderValues")

                .addAnnotation(Override.class)

                .addModifiers(Modifier.PUBLIC)

                .returns(ParameterizedTypeName.get(

                        ClassName.get(Collection.class),

                        TypeName.get(Class.class)))

                .addCode("return $N;\n", providers)

                .build();



        final TypeSpec baseClass = TypeSpec.classBuilder(CLASS_BASE)

                .addModifiers(Modifier.PUBLIC)

                .addSuperinterface(ClassName.get(SearchIndexableResources.class))

                .addField(providers)

                .addMethod(baseConstructorBuilder.build())

                .addMethod(addIndex)

                .addMethod(getProviderValues)

                .build();

        final JavaFile searchIndexableResourcesBase = JavaFile.builder(PACKAGE, baseClass).build();



        final JavaFile searchIndexableResourcesMobile = JavaFile.builder(PACKAGE,

                TypeSpec.classBuilder(CLASS_MOBILE)

                        .addModifiers(Modifier.PUBLIC)

                        .superclass(ClassName.get(PACKAGE, baseClass.name))

                        .addMethod(mobileConstructorBuilder.build())

                        .build())

                .build();



        final JavaFile searchIndexableResourcesTv = JavaFile.builder(PACKAGE,

                TypeSpec.classBuilder(CLASS_TV)

                        .addModifiers(Modifier.PUBLIC)

                        .superclass(ClassName.get(PACKAGE, baseClass.name))

                        .addMethod(tvConstructorBuilder.build())

                        .build())

                .build();



        final JavaFile searchIndexableResourcesWear = JavaFile.builder(PACKAGE,

                TypeSpec.classBuilder(CLASS_WEAR)

                        .addModifiers(Modifier.PUBLIC)

                        .superclass(ClassName.get(PACKAGE, baseClass.name))

                        .addMethod(wearConstructorBuilder.build())

                        .build())

                .build();



        final JavaFile searchIndexableResourcesAuto = JavaFile.builder(PACKAGE,

                TypeSpec.classBuilder(CLASS_AUTO)

                        .addModifiers(Modifier.PUBLIC)

                        .superclass(ClassName.get(PACKAGE, baseClass.name))

                        .addMethod(autoConstructorBuilder.build())

                        .build())

                .build();



        final JavaFile searchIndexableResourcesArc = JavaFile.builder(PACKAGE,

                TypeSpec.classBuilder(CLASS_ARC)

                        .addModifiers(Modifier.PUBLIC)

                        .superclass(ClassName.get(PACKAGE, baseClass.name))

                        .addMethod(arcConstructorBuilder.build())

                        .build())

                .build();



        try {

            searchIndexableResourcesBase.writeTo(mFiler);

            searchIndexableResourcesMobile.writeTo(mFiler);

            searchIndexableResourcesTv.writeTo(mFiler);

            searchIndexableResourcesWear.writeTo(mFiler);

            searchIndexableResourcesAuto.writeTo(mFiler);

            searchIndexableResourcesArc.writeTo(mFiler);

        } catch (IOException e) {

            mMessager.printMessage(Kind.ERROR, "Error while writing file: " + e);

        }

        return true;

    }



    @Override

    public synchronized void init(ProcessingEnvironment processingEnvironment) {

        super.init(processingEnvironment);

        mFiler = processingEnvironment.getFiler();

        mMessager = processingEnvironment.getMessager();

    }

}

packages/SettingsLib/search/resources/META-INF/services/javax.annotation.processing.Processor

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#

# Copyright (C) 2018 The Android Open Source Project

#

# 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.

#



com.android.settingslib.search.IndexableProcessor

packages/SettingsLib/search/src/com/android/settingslib/search/SearchIndexable.java

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/*

 * Copyright (C) 2018 The Android Open Source Project

 *

 * 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 com.android.settingslib.search;



import java.lang.annotation.Retention;

import java.lang.annotation.RetentionPolicy;



/**

 * Denotes that the class should participate in search indexing.

 */

@Retention(RetentionPolicy.SOURCE)

public @interface SearchIndexable {

    /**

     * Bitfield for the form factors this class should be considered indexable for.

     * Default is {@link #ALL}.

     *

     * TODO: actually use this value somehow

     */

    int forTarget() default ALL;



    /**

     * Indicates that the class should be considered indexable for Mobile.

     */

    int MOBILE = 1<<0;



    /**

     * Indicates that the class should be considered indexable for TV.

     */

    int TV = 1<<1;



    /**

     * Indicates that the class should be considered indexable for Wear.

     */

    int WEAR = 1<<2;



    /**

     * Indicates that the class should be considered indexable for Auto.

     */

    int AUTO = 1<<3;



    /**

     * Indicates that the class should be considered indexable for ARC++.

     */

    int ARC = 1<<4;



    /**

     * Indicates that the class should be considered indexable for all targets.

     */

    int ALL = MOBILE | TV | WEAR | AUTO | ARC;



}