1 /*
2  * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
3  */
4 /*
5  * Licensed to the Apache Software Foundation (ASF) under one or more
6  * contributor license agreements.  See the NOTICE file distributed with
7  * this work for additional information regarding copyright ownership.
8  * The ASF licenses this file to You under the Apache License, Version 2.0
9  * (the "License"); you may not use this file except in compliance with
10  * the License.  You may obtain a copy of the License at
11  *
12  *      http://www.apache.org/licenses/LICENSE-2.0
13  *
14  * Unless required by applicable law or agreed to in writing, software
15  * distributed under the License is distributed on an "AS IS" BASIS,
16  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17  * See the License for the specific language governing permissions and
18  * limitations under the License.
19  */
20 
21 package com.sun.org.apache.xerces.internal.impl.xs;
22 
23 import com.sun.org.apache.xerces.internal.xs.StringList;
24 import java.util.AbstractList;
25 
26 /**
27  * StringList implementation for schema error codes and error messages.
28  *
29  * @xerces.internal
30  *
31  * @author Michael Glavassevich, IBM
32  *
33  * @LastModified: Oct 2017
34  */
35 final class PSVIErrorList extends AbstractList<String> implements StringList {
36 
37     private final String[] fArray;
38     private final int fLength;
39     private final int fOffset;
40 
PSVIErrorList(String[] array, boolean even)41     public PSVIErrorList(String[] array, boolean even) {
42         fArray = array;
43         fLength = (fArray.length >> 1);
44         fOffset = even ? 0 : 1;
45     }
46 
contains(String item)47     public boolean contains(String item) {
48         if (item == null) {
49             for (int i = 0; i < fLength; ++i) {
50                 if (fArray[(i << 1) + fOffset] == null) {
51                     return true;
52                 }
53             }
54         }
55         else {
56             for (int i = 0; i < fLength; ++i) {
57                 if (item.equals(fArray[(i << 1) + fOffset])) {
58                     return true;
59                 }
60             }
61         }
62         return false;
63     }
64 
getLength()65     public int getLength() {
66         return fLength;
67     }
68 
item(int index)69     public String item(int index) {
70         if (index < 0 || index >= fLength) {
71             return null;
72         }
73         return fArray[(index << 1) + fOffset];
74     }
75 
76     /*
77      * List methods
78      */
79 
get(int index)80     public String get(int index) {
81         if (index >= 0 && index < fLength) {
82             return fArray[(index << 1) + fOffset];
83         }
84         throw new IndexOutOfBoundsException("Index: " + index);
85     }
86 
size()87     public int size() {
88         return getLength();
89     }
90 
91 } // class PSVIErrorList
92