| // 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 com.android.tools.r8.graph.DexField; |
| import com.android.tools.r8.ir.code.InvokeMethodWithReceiver; |
| |
| class BottomParameterUsage extends ParameterUsage { |
| |
| private static final BottomParameterUsage BOTTOM = new BottomParameterUsage(); |
| |
| private BottomParameterUsage() {} |
| |
| static BottomParameterUsage getInstance() { |
| return BOTTOM; |
| } |
| |
| @Override |
| ParameterUsage addFieldReadFromParameter(DexField field) { |
| return InternalNonEmptyParameterUsage.builder().addFieldReadFromParameter(field).build(); |
| } |
| |
| @Override |
| ParameterUsage addMethodCallWithParameterAsReceiver(InvokeMethodWithReceiver invoke) { |
| return InternalNonEmptyParameterUsage.builder() |
| .addMethodCallWithParameterAsReceiver(invoke) |
| .build(); |
| } |
| |
| @Override |
| ParameterUsage externalize() { |
| return this; |
| } |
| |
| @Override |
| public boolean isBottom() { |
| return true; |
| } |
| |
| @Override |
| public boolean isParameterMutated() { |
| return false; |
| } |
| |
| @Override |
| public boolean isParameterReturned() { |
| return false; |
| } |
| |
| @Override |
| public boolean isParameterUsedAsLock() { |
| return false; |
| } |
| |
| @Override |
| ParameterUsage setParameterMutated() { |
| return InternalNonEmptyParameterUsage.builder().setParameterMutated().build(); |
| } |
| |
| @Override |
| ParameterUsage setParameterReturned() { |
| return InternalNonEmptyParameterUsage.builder().setParameterReturned().build(); |
| } |
| |
| @Override |
| ParameterUsage setParameterUsedAsLock() { |
| return InternalNonEmptyParameterUsage.builder().setParameterUsedAsLock().build(); |
| } |
| } |