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
17package com.android.dx.dex.file;
18
19import com.android.dx.rop.cst.CstType;
20
21/**
22 * Representation of a reference to an item inside a Dalvik file.
23 */
24public 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     */
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
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     */
58    public final CstType getDefiningClass() {
59        return type;
60    }
61}
62