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      1 /*
      2  * Licensed to the Apache Software Foundation (ASF) under one or more
      3  * contributor license agreements.  See the NOTICE file distributed with
      4  * this work for additional information regarding copyright ownership.
      5  * The ASF licenses this file to You under the Apache License, Version 2.0
      6  * (the "License"); you may not use this file except in compliance with
      7  * the License.  You may obtain a copy of the License at
      8  *
      9  *     http://www.apache.org/licenses/LICENSE-2.0
     10  *
     11  * Unless required by applicable law or agreed to in writing, software
     12  * distributed under the License is distributed on an "AS IS" BASIS,
     13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14  * See the License for the specific language governing permissions and
     15  * limitations under the License.
     16  */
     17 /*
     18  * Copyright (C) 2008 The Android Open Source Project
     19  *
     20  * Licensed under the Apache License, Version 2.0 (the "License");
     21  * you may not use this file except in compliance with the License.
     22  * You may obtain a copy of the License at
     23  *
     24  *      http://www.apache.org/licenses/LICENSE-2.0
     25  *
     26  * Unless required by applicable law or agreed to in writing, software
     27  * distributed under the License is distributed on an "AS IS" BASIS,
     28  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     29  * See the License for the specific language governing permissions and
     30  * limitations under the License.
     31  */
     32 
     33 package java.lang.reflect;
     34 
     35 import com.android.dex.Dex;
     36 
     37 /**
     38  * @hide
     39  */
     40 public final class ArtField {
     41 
     42     private Class<?> declaringClass;
     43     /** Field access flags (modifiers) */
     44     private int accessFlags;
     45     /** Index into DexFile's field ids */
     46     private int fieldDexIndex;
     47     /** Offset of field in object or class */
     48     private int offset;
     49 
     50     /**
     51      * Only created by art directly.
     52      */
     53     private ArtField() {}
     54 
     55     public int getAccessFlags() {
     56         return accessFlags;
     57     }
     58 
     59     int getDexFieldIndex() {
     60         return fieldDexIndex;
     61     }
     62 
     63     int getOffset() {
     64         return offset;
     65     }
     66 
     67     public String getName() {
     68         if (fieldDexIndex == -1) {
     69             // Proxy classes have 1 synthesized static field with no valid dex index
     70             if (!declaringClass.isProxy()) {
     71                 throw new AssertionError();
     72             }
     73             return "throws";
     74         }
     75         Dex dex = declaringClass.getDex();
     76         int nameIndex = dex.nameIndexFromFieldIndex(fieldDexIndex);
     77         return declaringClass.getDexCacheString(dex, nameIndex);
     78     }
     79 
     80     Class<?> getDeclaringClass() {
     81         return declaringClass;
     82     }
     83 
     84     Class<?> getType() {
     85         if (fieldDexIndex == -1) {
     86             // The type of the synthesized field in a Proxy class is Class[][]
     87             if (!declaringClass.isProxy()) {
     88                 throw new AssertionError();
     89             }
     90             return Class[][].class;
     91         }
     92         Dex dex = declaringClass.getDex();
     93         int typeIndex = dex.typeIndexFromFieldIndex(fieldDexIndex);
     94         return declaringClass.getDexCacheType(dex, typeIndex);
     95     }
     96 }
     97