xref: /frameworks/opt/setupwizard/library/main/src/com/android/setupwizardlib/annotations/Keep.java

/*
 * Copyright (C) 2015 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.setupwizardlib.annotations;

import java.lang.annotation.Retention;
import java.lang.annotation.Target;

import static java.lang.annotation.ElementType.ANNOTATION_TYPE;
import static java.lang.annotation.ElementType.CONSTRUCTOR;
import static java.lang.annotation.ElementType.FIELD;
import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.ElementType.PACKAGE;
import static java.lang.annotation.ElementType.TYPE;
import static java.lang.annotation.RetentionPolicy.CLASS;

/**
 * Denotes that the annotated element should not be removed when
 * the code is minified at build time. This is typically used
 * on methods and classes that are accessed only via reflection
 * so a compiler may think that the code is unused.
 * <p>
 * Example:
 * <pre>{@code
 *  &#64;Keep
 *  public void foo() {
 *      ...
 *  }
 * }</pre>
 *
 * Copied from android.support.annotation.Keep
 * TODO: Add support annotation library as a dependency and use that.
 */
@Retention(CLASS)
@Target({PACKAGE,TYPE,ANNOTATION_TYPE,CONSTRUCTOR,METHOD,FIELD})
public @interface Keep {
}