com.google.caliper.runner.PlatformModule.java Source code

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Here is the source code for com.google.caliper.runner.PlatformModule.java

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/*
 * Copyright (C) 2015 Google Inc.
 *
 * 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.google.caliper.runner;

import com.google.caliper.platform.Platform;
import com.google.caliper.platform.dalvik.DalvikModule;
import com.google.caliper.platform.dalvik.DalvikPlatform;
import com.google.caliper.platform.jvm.JvmModule;
import com.google.caliper.platform.jvm.JvmPlatform;
import com.google.common.base.Optional;

import dagger.Module;
import dagger.Provides;

import javax.inject.Provider;

/**
 * Provider of a {@link Platform} instance appropriate for the current platform.
 */
@Module(includes = { JvmModule.class, DalvikModule.class })
public final class PlatformModule {

    /**
     * Chooses the {@link DalvikPlatform} if available, otherwise uses the default
     * {@link JvmPlatform}.
     */
    @Provides
    static Platform providePlatform(Optional<DalvikPlatform> optionalDalvikPlatform,
            Provider<JvmPlatform> jvmPlatformProvider) {
        if (optionalDalvikPlatform.isPresent()) {
            return optionalDalvikPlatform.get();
        } else {
            return jvmPlatformProvider.get();
        }
    }
}