1f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project/* 2f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Copyright (C) 2007 The Android Open Source Project 3f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 4f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 5f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * you may not use this file except in compliance with the License. 6f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * You may obtain a copy of the License at 7f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 8f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 9f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 10f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 11f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 12f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * See the License for the specific language governing permissions and 14f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * limitations under the License. 15f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 16f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 17f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectpackage com.android.dx.rop.cst; 18f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 19f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectimport com.android.dx.rop.type.Type; 20f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 21f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project/** 2299409883d9c4c0ffb49b070ce307bb33a9dfe9f1The Android Open Source Project * Constant type to represent a known-{@code null} value. 23f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 24f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectpublic final class CstKnownNull extends CstLiteralBits { 2599409883d9c4c0ffb49b070ce307bb33a9dfe9f1The Android Open Source Project /** {@code non-null;} unique instance of this class */ 26f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public static final CstKnownNull THE_ONE = new CstKnownNull(); 27f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 28f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 29f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Constructs an instance. This class is not publicly instantiable. Use 30f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * {@link #THE_ONE}. 31f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 32f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project private CstKnownNull() { 33f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project // This space intentionally left blank. 34f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 35f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 36f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** {@inheritDoc} */ 37f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project @Override 38f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public boolean equals(Object other) { 39f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return (other instanceof CstKnownNull); 40f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 41f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 42f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** {@inheritDoc} */ 43f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project @Override 44f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public int hashCode() { 45f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return 0x4466757a; 46f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 47f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 48f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** {@inheritDoc} */ 49f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project @Override 50f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project protected int compareTo0(Constant other) { 51f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return 0; 52f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 53f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 54f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** {@inheritDoc} */ 55f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project @Override 56f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public String toString() { 57f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return "known-null"; 58f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 59f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 60f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** {@inheritDoc} */ 61f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public Type getType() { 62f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return Type.KNOWN_NULL; 63f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 64f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 65f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** {@inheritDoc} */ 66f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project @Override 67f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public String typeName() { 68f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return "known-null"; 69f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 70f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 71f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** {@inheritDoc} */ 72f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project @Override 73f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public boolean isCategory2() { 74f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return false; 75f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 76f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 77f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** {@inheritDoc} */ 78f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public String toHuman() { 79f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return "null"; 80f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 81f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 82f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** {@inheritDoc} */ 83f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project @Override 84f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public boolean fitsInInt() { 85f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project // See comment in getIntBits(). 86f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return true; 87f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 88f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 89f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 90f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * {@inheritDoc} 91de75089fb7216d19e9c22cce4dc62a49513477d3Carl Shapiro * 92f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * As "literal bits," a known-null is always represented as the 93f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * number zero. 94f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 95f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project @Override 96f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public int getIntBits() { 97f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return 0; 98f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 99f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 100f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 101f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * {@inheritDoc} 102de75089fb7216d19e9c22cce4dc62a49513477d3Carl Shapiro * 103f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * As "literal bits," a known-null is always represented as the 104f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * number zero. 105f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 106f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project @Override 107f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public long getLongBits() { 108f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return 0; 109f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 110f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project} 111