src/main/java/com/android/tools/r8/utils/Box.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.utils;

import java.util.Comparator;
import java.util.function.Consumer;
import java.util.function.Predicate;
import java.util.function.Supplier;

public class Box<T> extends BoxBase<T> {

  public Box() {}

  public Box(T initialValue) {
    super(initialValue);
  }

  @Override
  public void accept(Consumer<? super T> consumer) {
    super.accept(consumer);
  }

  @Override
  public void clear() {
    super.clear();
  }

  @Override
  public T computeIfAbsent(Supplier<T> supplier) {
    return super.computeIfAbsent(supplier);
  }

  public <E extends Exception> T computeIfAbsentThrowing(ThrowingSupplier<T, E> supplier) throws E {
    if (!isSet()) {
      set(supplier.get());
    }
    return get();
  }

  @Override
  public T get() {
    return super.get();
  }

  @Override
  public T getAndSet(T newValue) {
    return super.getAndSet(newValue);
  }

  public <E extends Exception> Box<T> rebuild(ThrowingFunction<T, T, E> fn) throws E {
    if (isSet()) {
      return new Box<>(fn.apply(get()));
    }
    return new Box<>();
  }

  @Override
  public void set(T value) {
    super.set(value);
  }

  @Override
  public void setMin(T value, Comparator<T> comparator) {
    super.setMin(value, comparator);
  }

  @Override
  public boolean test(Predicate<T> predicate) {
    return super.test(predicate);
  }
}