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.code; 18f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 19333201833d506a3accdeac6ceb7caba8d4b95797Jesse Wilsonimport com.android.dx.rop.cst.CstString; 20f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 21f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project/** 22f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * A local variable item: either a name or a signature or both. 23f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 24f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectpublic class LocalItem implements Comparable<LocalItem> { 2599409883d9c4c0ffb49b070ce307bb33a9dfe9f1The Android Open Source Project /** {@code null-ok;} local variable name */ 26333201833d506a3accdeac6ceb7caba8d4b95797Jesse Wilson private final CstString name; 27f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 2899409883d9c4c0ffb49b070ce307bb33a9dfe9f1The Android Open Source Project /** {@code null-ok;} local variable signature */ 29333201833d506a3accdeac6ceb7caba8d4b95797Jesse Wilson private final CstString signature; 30f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 31f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 32f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Make a new item. If both name and signature are null, null is returned. 33f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 34f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * TODO: intern these 35f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 3699409883d9c4c0ffb49b070ce307bb33a9dfe9f1The Android Open Source Project * @param name {@code null-ok;} local variable name 3799409883d9c4c0ffb49b070ce307bb33a9dfe9f1The Android Open Source Project * @param signature {@code null-ok;} local variable signature 3899409883d9c4c0ffb49b070ce307bb33a9dfe9f1The Android Open Source Project * @return {@code non-null;} appropriate instance. 39f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 40333201833d506a3accdeac6ceb7caba8d4b95797Jesse Wilson public static LocalItem make(CstString name, CstString signature) { 41f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (name == null && signature == null) { 42f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return null; 43f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 44f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 45f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return new LocalItem (name, signature); 46f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 47f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 48f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 49f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Constructs instance. 50f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 5199409883d9c4c0ffb49b070ce307bb33a9dfe9f1The Android Open Source Project * @param name {@code null-ok;} local variable name 5299409883d9c4c0ffb49b070ce307bb33a9dfe9f1The Android Open Source Project * @param signature {@code null-ok;} local variable signature 53f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 54333201833d506a3accdeac6ceb7caba8d4b95797Jesse Wilson private LocalItem(CstString name, CstString signature) { 55f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project this.name = name; 56f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project this.signature = signature; 57f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 58f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 59f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** {@inheritDoc} */ 60f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project @Override 61f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public boolean equals(Object other) { 62f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (!(other instanceof LocalItem)) { 63f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return false; 64f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 65f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 66f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project LocalItem local = (LocalItem) other; 67f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 68f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return 0 == compareTo(local); 69f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 70f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 71de75089fb7216d19e9c22cce4dc62a49513477d3Carl Shapiro /** 72f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Compares two strings like String.compareTo(), excepts treats a null 73f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * as the least-possible string value. 74f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 75f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @return negative integer, zero, or positive integer in accordance 76f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * with Comparable.compareTo() 77f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 78333201833d506a3accdeac6ceb7caba8d4b95797Jesse Wilson private static int compareHandlesNulls(CstString a, CstString b) { 79f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (a == b) { 80f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return 0; 81f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } else if (a == null) { 82f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return -1; 83f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } else if (b == null) { 84f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return 1; 85f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } else { 86f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return a.compareTo(b); 87f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 88f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 89f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 90f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** {@inheritDoc} */ 91f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public int compareTo(LocalItem local) { 92f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project int ret; 93f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 94f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project ret = compareHandlesNulls(name, local.name); 95f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 96f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (ret != 0) { 97f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return ret; 98f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 99f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 100f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project ret = compareHandlesNulls(signature, local.signature); 101f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 102f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return ret; 103f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 104f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 105f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 106f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** {@inheritDoc} */ 107f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project @Override 108f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public int hashCode() { 109f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return (name == null ? 0 : name.hashCode()) * 31 110f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project + (signature == null ? 0 : signature.hashCode()); 111f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 112f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 113f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** {@inheritDoc} */ 114f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project @Override 115f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public String toString() { 116f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (name != null && signature == null) { 117f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return name.toQuoted(); 118f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } else if (name == null && signature == null) { 119f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return ""; 120f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 121f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 122f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return "[" + (name == null ? "" : name.toQuoted()) 123f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project + "|" + (signature == null ? "" : signature.toQuoted()); 124f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 125f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 126f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 127f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Gets name. 128f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 12999409883d9c4c0ffb49b070ce307bb33a9dfe9f1The Android Open Source Project * @return {@code null-ok;} name 130f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 131333201833d506a3accdeac6ceb7caba8d4b95797Jesse Wilson public CstString getName() { 132f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return name; 133f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 134f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 135f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 136f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Gets signature. 137f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 13899409883d9c4c0ffb49b070ce307bb33a9dfe9f1The Android Open Source Project * @return {@code null-ok;} signature 139f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 140333201833d506a3accdeac6ceb7caba8d4b95797Jesse Wilson public CstString getSignature() { 141f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return signature; 142f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 143f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project} 144