src/test/java/com/android/tools/r8/shaking/keptgraph/KeptByAnnotatedMethodTest.java

// Copyright (c) 2019, the R8 project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
package com.android.tools.r8.shaking.keptgraph;

import com.android.tools.r8.Keep;
import com.android.tools.r8.NeverInline;

public class KeptByAnnotatedMethodTest {

  static class Inner {

    @Keep
    void foo() {
      bar();
    }

    @NeverInline
    static void bar() {
      System.out.println("called bar");
    }

    @NeverInline
    static void baz() {
      System.out.println("called baz");
    }
  }

  public static void main(String[] args) throws Exception {
    // Make inner class undecidable to avoid generating reflective rules.
    Class<?> clazz = getInner(args.length);
    Object instance = clazz.newInstance();
    clazz.getDeclaredMethod("foo").invoke(instance);
  }

  private static Class<?> getInner(int i) {
    return i == 0 ? Inner.class : null;
  }
}