blob: ab243b6d52b541c91229a17128957bc8ac6bc5cf [file] [log] [blame]
// 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.shaking;
/** Immutable keep requirements for a method. */
public final class KeepMethodInfo extends KeepMemberInfo<KeepMethodInfo.Builder, KeepMethodInfo> {
// Requires all aspects of a method to be kept.
private static final KeepMethodInfo TOP = new Builder().makeTop().build();
// Requires no aspects of a method to be kept.
private static final KeepMethodInfo BOTTOM = new Builder().makeBottom().build();
public static KeepMethodInfo top() {
return TOP;
}
public static KeepMethodInfo bottom() {
return BOTTOM;
}
private KeepMethodInfo(Builder builder) {
super(builder);
}
// This builder is not private as there are known instances where it is safe to modify keep info
// in a non-upwards direction.
@Override
Builder builder() {
return new Builder(this);
}
public Joiner joiner() {
assert !isTop();
return new Joiner(this);
}
@Override
public boolean isTop() {
return this.equals(top());
}
@Override
public boolean isBottom() {
return this.equals(bottom());
}
public static class Builder extends KeepInfo.Builder<Builder, KeepMethodInfo> {
private Builder() {
super();
}
private Builder(KeepMethodInfo original) {
super(original);
}
@Override
public Builder self() {
return this;
}
@Override
public KeepMethodInfo getTopInfo() {
return TOP;
}
@Override
public KeepMethodInfo getBottomInfo() {
return BOTTOM;
}
@Override
public boolean isEqualTo(KeepMethodInfo other) {
return true;
}
@Override
public KeepMethodInfo doBuild() {
return new KeepMethodInfo(this);
}
}
public static class Joiner extends KeepInfo.Joiner<Joiner, Builder, KeepMethodInfo> {
public Joiner(KeepMethodInfo info) {
super(info.builder());
}
@Override
Joiner self() {
return this;
}
}
}