| // Copyright (c) 2020, 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.Set; |
| import java.util.function.BiConsumer; |
| import java.util.function.Consumer; |
| import java.util.function.Function; |
| |
| public class ConsumerUtils { |
| |
| public static <S, T> Function<S, Consumer<T>> curry(BiConsumer<S, T> function) { |
| return arg -> arg2 -> function.accept(arg, arg2); |
| } |
| |
| public static <S, T> Consumer<T> apply(BiConsumer<S, T> function, S arg) { |
| return curry(function).apply(arg); |
| } |
| |
| public static <T> Consumer<T> acceptIfNotSeen(Consumer<T> consumer, Set<T> seen) { |
| return element -> { |
| if (seen.add(element)) { |
| consumer.accept(element); |
| } |
| }; |
| } |
| |
| public static <T> Consumer<T> emptyConsumer() { |
| return ignore -> {}; |
| } |
| |
| public static <S, T> BiConsumer<S, T> emptyBiConsumer() { |
| return (s, t) -> {}; |
| } |
| |
| public static <T> ThrowingConsumer<T, RuntimeException> emptyThrowingConsumer() { |
| return ignore -> {}; |
| } |
| } |