1/*
2 * Copyright (C) 2010 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.gallery3d.util;
18
19public class IntArray {
20    private static final int INIT_CAPACITY = 8;
21
22    private int mData[] = new int[INIT_CAPACITY];
23    private int mSize = 0;
24
25    public void add(int value) {
26        if (mData.length == mSize) {
27            int temp[] = new int[mSize + mSize];
28            System.arraycopy(mData, 0, temp, 0, mSize);
29            mData = temp;
30        }
31        mData[mSize++] = value;
32    }
33
34    public int removeLast() {
35        mSize--;
36        return mData[mSize];
37    }
38
39    public int size() {
40        return mSize;
41    }
42
43    // For testing only
44    public int[] toArray(int[] result) {
45        if (result == null || result.length < mSize) {
46            result = new int[mSize];
47        }
48        System.arraycopy(mData, 0, result, 0, mSize);
49        return result;
50    }
51
52    public int[] getInternalArray() {
53        return mData;
54    }
55
56    public void clear() {
57        mSize = 0;
58        if (mData.length != INIT_CAPACITY) mData = new int[INIT_CAPACITY];
59    }
60}
61