1 /*
2  * Copyright (C) 2007 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.dx.dex.file;
18 
19 import com.android.dx.rop.cst.CstType;
20 
21 /**
22  * Representation of a reference to an item inside a Dalvik file.
23  */
24 public abstract class IdItem extends IndexedItem {
25     /**
26      * {@code non-null;} the type constant for the defining class of
27      * the reference
28      */
29     private final CstType type;
30 
31     /**
32      * Constructs an instance.
33      *
34      * @param type {@code non-null;} the type constant for the defining
35      * class of the reference
36      */
IdItem(CstType type)37     public IdItem(CstType type) {
38         if (type == null) {
39             throw new NullPointerException("type == null");
40         }
41 
42         this.type = type;
43     }
44 
45     /** {@inheritDoc} */
46     @Override
addContents(DexFile file)47     public void addContents(DexFile file) {
48         TypeIdsSection typeIds = file.getTypeIds();
49         typeIds.intern(type);
50     }
51 
52     /**
53      * Gets the type constant for the defining class of the
54      * reference.
55      *
56      * @return {@code non-null;} the type constant
57      */
getDefiningClass()58     public final CstType getDefiningClass() {
59         return type;
60     }
61 }
62