| // Copyright (c) 2017, 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.analysis.type; |
| |
| import com.android.tools.r8.graph.AppInfoWithSubtyping; |
| import com.android.tools.r8.graph.DexType; |
| |
| public class ClassTypeLatticeElement extends TypeLatticeElement { |
| final DexType classType; |
| |
| public ClassTypeLatticeElement(DexType classType, boolean isNullable) { |
| super(isNullable); |
| assert classType.isClassType(); |
| this.classType = classType; |
| } |
| |
| public DexType getClassType() { |
| return classType; |
| } |
| |
| @Override |
| TypeLatticeElement asNullable() { |
| return isNullable() ? this : new ClassTypeLatticeElement(classType, true); |
| } |
| |
| @Override |
| public TypeLatticeElement arrayGet(AppInfoWithSubtyping appInfo) { |
| return objectType(appInfo, true); |
| } |
| |
| @Override |
| public TypeLatticeElement checkCast(AppInfoWithSubtyping appInfo, DexType castType) { |
| if (classType.isSubtypeOf(castType, appInfo)) { |
| return this; |
| } |
| return fromDexType(castType, isNullable()); |
| } |
| |
| @Override |
| public String toString() { |
| return isNullableString() + classType.toString(); |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (!super.equals(o)) { |
| return false; |
| } |
| ClassTypeLatticeElement other = (ClassTypeLatticeElement) o; |
| return classType == other.classType; |
| } |
| |
| @Override |
| public int hashCode() { |
| int result = super.hashCode(); |
| result = 31 * result + classType.hashCode(); |
| return result; |
| } |
| } |