| // Copyright (c) 2021, 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.ir.optimize.classinliner.analysis; |
| |
| import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap; |
| |
| public class BottomParameterUsages extends ParameterUsages { |
| |
| private static final BottomParameterUsages INSTANCE = new BottomParameterUsages(); |
| |
| private BottomParameterUsages() {} |
| |
| static BottomParameterUsages getInstance() { |
| return INSTANCE; |
| } |
| |
| @Override |
| ParameterUsages externalize() { |
| return this; |
| } |
| |
| @Override |
| public ParameterUsagePerContext get(int parameter) { |
| return ParameterUsagePerContext.bottom(); |
| } |
| |
| @Override |
| public boolean isBottom() { |
| return true; |
| } |
| |
| @Override |
| ParameterUsages put(int parameter, ParameterUsagePerContext usagePerContext) { |
| Int2ObjectOpenHashMap<ParameterUsagePerContext> backing = new Int2ObjectOpenHashMap<>(); |
| backing.put(parameter, usagePerContext); |
| return NonEmptyParameterUsages.create(backing); |
| } |
| |
| @Override |
| public boolean equals(Object other) { |
| return other == INSTANCE; |
| } |
| |
| @Override |
| public int hashCode() { |
| return System.identityHashCode(this); |
| } |
| } |