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 
  41     public PSVIErrorList(String[] array, boolean even) {
  42         fArray = array;
  43         fLength = (fArray.length >> 1);
  44         fOffset = even ? 0 : 1;
  45     }
  46 
  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 
  65     public int getLength() {
  66         return fLength;
  67     }
  68 
  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 
  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 
  87     public int size() {
  88         return getLength();
  89     }
  90 
  91 } // class PSVIErrorList
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