1 /* 2 * Copyright 2012, Google LLC 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google LLC nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 package com.android.tools.smali.dexlib2.immutable.value; 32 33 import com.android.tools.smali.dexlib2.ValueType; 34 import com.android.tools.smali.dexlib2.iface.value.AnnotationEncodedValue; 35 import com.android.tools.smali.dexlib2.iface.value.ArrayEncodedValue; 36 import com.android.tools.smali.dexlib2.iface.value.BooleanEncodedValue; 37 import com.android.tools.smali.dexlib2.iface.value.ByteEncodedValue; 38 import com.android.tools.smali.dexlib2.iface.value.CharEncodedValue; 39 import com.android.tools.smali.dexlib2.iface.value.DoubleEncodedValue; 40 import com.android.tools.smali.dexlib2.iface.value.EncodedValue; 41 import com.android.tools.smali.dexlib2.iface.value.EnumEncodedValue; 42 import com.android.tools.smali.dexlib2.iface.value.FieldEncodedValue; 43 import com.android.tools.smali.dexlib2.iface.value.FloatEncodedValue; 44 import com.android.tools.smali.dexlib2.iface.value.IntEncodedValue; 45 import com.android.tools.smali.dexlib2.iface.value.LongEncodedValue; 46 import com.android.tools.smali.dexlib2.iface.value.MethodEncodedValue; 47 import com.android.tools.smali.dexlib2.iface.value.MethodHandleEncodedValue; 48 import com.android.tools.smali.dexlib2.iface.value.MethodTypeEncodedValue; 49 import com.android.tools.smali.dexlib2.iface.value.ShortEncodedValue; 50 import com.android.tools.smali.dexlib2.iface.value.StringEncodedValue; 51 import com.android.tools.smali.dexlib2.iface.value.TypeEncodedValue; 52 import com.android.tools.smali.util.ExceptionWithContext; 53 import com.android.tools.smali.util.ImmutableConverter; 54 55 import javax.annotation.Nonnull; 56 import javax.annotation.Nullable; 57 import java.util.List; 58 59 public class ImmutableEncodedValueFactory { 60 @Nonnull of(@onnull EncodedValue encodedValue)61 public static ImmutableEncodedValue of(@Nonnull EncodedValue encodedValue) { 62 switch (encodedValue.getValueType()) { 63 case ValueType.BYTE: 64 return ImmutableByteEncodedValue.of((ByteEncodedValue)encodedValue); 65 case ValueType.SHORT: 66 return ImmutableShortEncodedValue.of((ShortEncodedValue)encodedValue); 67 case ValueType.CHAR: 68 return ImmutableCharEncodedValue.of((CharEncodedValue)encodedValue); 69 case ValueType.INT: 70 return ImmutableIntEncodedValue.of((IntEncodedValue)encodedValue); 71 case ValueType.LONG: 72 return ImmutableLongEncodedValue.of((LongEncodedValue)encodedValue); 73 case ValueType.FLOAT: 74 return ImmutableFloatEncodedValue.of((FloatEncodedValue)encodedValue); 75 case ValueType.DOUBLE: 76 return ImmutableDoubleEncodedValue.of((DoubleEncodedValue)encodedValue); 77 case ValueType.STRING: 78 return ImmutableStringEncodedValue.of((StringEncodedValue)encodedValue); 79 case ValueType.TYPE: 80 return ImmutableTypeEncodedValue.of((TypeEncodedValue)encodedValue); 81 case ValueType.FIELD: 82 return ImmutableFieldEncodedValue.of((FieldEncodedValue)encodedValue); 83 case ValueType.METHOD: 84 return ImmutableMethodEncodedValue.of((MethodEncodedValue)encodedValue); 85 case ValueType.ENUM: 86 return ImmutableEnumEncodedValue.of((EnumEncodedValue)encodedValue); 87 case ValueType.ARRAY: 88 return ImmutableArrayEncodedValue.of((ArrayEncodedValue)encodedValue); 89 case ValueType.ANNOTATION: 90 return ImmutableAnnotationEncodedValue.of((AnnotationEncodedValue)encodedValue); 91 case ValueType.NULL: 92 return ImmutableNullEncodedValue.INSTANCE; 93 case ValueType.BOOLEAN: 94 return ImmutableBooleanEncodedValue.of((BooleanEncodedValue)encodedValue); 95 case ValueType.METHOD_HANDLE: 96 return ImmutableMethodHandleEncodedValue.of((MethodHandleEncodedValue) encodedValue); 97 case ValueType.METHOD_TYPE: 98 return ImmutableMethodTypeEncodedValue.of((MethodTypeEncodedValue) encodedValue); 99 default: 100 throw new IllegalArgumentException("Invalid value type."); 101 } 102 } 103 104 @Nonnull defaultValueForType(String type)105 public static EncodedValue defaultValueForType(String type) { 106 switch (type.charAt(0)) { 107 case 'Z': 108 return ImmutableBooleanEncodedValue.FALSE_VALUE; 109 case 'B': 110 return new ImmutableByteEncodedValue((byte)0); 111 case 'S': 112 return new ImmutableShortEncodedValue((short)0); 113 case 'C': 114 return new ImmutableCharEncodedValue((char)0); 115 case 'I': 116 return new ImmutableIntEncodedValue(0); 117 case 'J': 118 return new ImmutableLongEncodedValue(0); 119 case 'F': 120 return new ImmutableFloatEncodedValue(0); 121 case 'D': 122 return new ImmutableDoubleEncodedValue(0); 123 case 'L': 124 case '[': 125 return ImmutableNullEncodedValue.INSTANCE; 126 default: 127 throw new ExceptionWithContext("Unrecognized type: %s", type); 128 } 129 } 130 131 @Nullable ofNullable(@ullable EncodedValue encodedValue)132 public static ImmutableEncodedValue ofNullable(@Nullable EncodedValue encodedValue) { 133 if (encodedValue == null) { 134 return null; 135 } 136 return of(encodedValue); 137 } 138 139 @Nonnull immutableListOf(@ullable Iterable<? extends EncodedValue> list)140 public static List<ImmutableEncodedValue> immutableListOf 141 (@Nullable Iterable<? extends EncodedValue> list) { 142 return CONVERTER.toList(list); 143 } 144 145 private static final ImmutableConverter<ImmutableEncodedValue, EncodedValue> CONVERTER = 146 new ImmutableConverter<ImmutableEncodedValue, EncodedValue>() { 147 @Override 148 protected boolean isImmutable(@Nonnull EncodedValue item) { 149 return item instanceof ImmutableEncodedValue; 150 } 151 152 @Nonnull 153 @Override 154 protected ImmutableEncodedValue makeImmutable(@Nonnull EncodedValue item) { 155 return of(item); 156 } 157 }; 158 } 159