/*

 */

/*

 * Licensed to the Apache Software Foundation (ASF) under one or more

 * contributor license agreements.  See the NOTICE file distributed with

 * this work for additional information regarding copyright ownership.

 * The ASF licenses this file to You under the Apache License, Version 2.0

 * (the "License"); you may not use this file except in compliance with

 * the License.  You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

package com.sun.org.apache.xerces.internal.impl.xs;

import java.util.AbstractList;

/**

 * StringList implementation for schema error codes and error messages.

 *

 * @xerces.internal

 *

 * @author Michael Glavassevich, IBM

 *

 */

    private final String[] fArray;

    private final int fLength;

    private final int fOffset;

    public PSVIErrorList(String[] array, boolean even) {

        fArray = array;

        fLength = (fArray.length >> 1);

        fOffset = even ? 0 : 1;

    }

    public boolean contains(String item) {

        if (item == null) {

            for (int i = 0; i < fLength; ++i) {

                if (fArray[(i << 1) + fOffset] == null) {

                    return true;

                }

            }

        }

        else {

            for (int i = 0; i < fLength; ++i) {

                if (item.equals(fArray[(i << 1) + fOffset])) {

                    return true;

                }

            }

        }

        return false;

    }

    public int getLength() {

        return fLength;

    }

    public String item(int index) {

        if (index < 0 || index >= fLength) {

            return null;

        }

        return fArray[(index << 1) + fOffset];

    }

    /*

     * List methods

     */

        if (index >= 0 && index < fLength) {

            return fArray[(index << 1) + fOffset];

        }

        throw new IndexOutOfBoundsException("Index: " + index);

    }

    public int size() {

        return getLength();

    }

} // class PSVIErrorList