| // Copyright (c) 2023, 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.collections; |
| |
| import com.android.tools.r8.errors.Unreachable; |
| import java.util.Collection; |
| import java.util.Map; |
| import java.util.Set; |
| |
| public class ThrowingMap<K, V> implements Map<K, V> { |
| |
| private static final ThrowingMap<?, ?> INSTANCE = new ThrowingMap<>(); |
| |
| private ThrowingMap() {} |
| |
| @SuppressWarnings("unchecked") |
| public static <K, V> ThrowingMap<K, V> get() { |
| return (ThrowingMap<K, V>) INSTANCE; |
| } |
| |
| public static boolean isThrowingMap(Map<?, ?> map) { |
| return map == get(); |
| } |
| |
| @Override |
| public void clear() { |
| throw new Unreachable(); |
| } |
| |
| @Override |
| public boolean containsKey(Object key) { |
| throw new Unreachable(); |
| } |
| |
| @Override |
| public boolean containsValue(Object value) { |
| throw new Unreachable(); |
| } |
| |
| @Override |
| public Set<Entry<K, V>> entrySet() { |
| throw new Unreachable(); |
| } |
| |
| @Override |
| public V get(Object key) { |
| throw new Unreachable(); |
| } |
| |
| @Override |
| public boolean isEmpty() { |
| throw new Unreachable(); |
| } |
| |
| @Override |
| public Set<K> keySet() { |
| throw new Unreachable(); |
| } |
| |
| @Override |
| public V put(K key, V value) { |
| throw new Unreachable(); |
| } |
| |
| @Override |
| public void putAll(Map<? extends K, ? extends V> m) { |
| throw new Unreachable(); |
| } |
| |
| @Override |
| public V remove(Object key) { |
| throw new Unreachable(); |
| } |
| |
| @Override |
| public int size() { |
| throw new Unreachable(); |
| } |
| |
| @Override |
| public Collection<V> values() { |
| throw new Unreachable(); |
| } |
| } |