/*

 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.

 */

/*

 * 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.dv.xs;

import com.sun.org.apache.xerces.internal.impl.dv.InvalidDatatypeValueException;

import com.sun.org.apache.xerces.internal.impl.dv.ValidationContext;

import com.sun.org.apache.xerces.internal.xs.datatypes.ObjectList;

import java.util.AbstractList;

/**

 * Represent the schema list types

 *

 * @xerces.internal

 *

 * @author Neeraj Bajaj, Sun Microsystems, inc.

 * @author Sandy Gao, IBM

 *

 * @LastModified: Oct 2017

 */

public class ListDV extends TypeValidator{

    public short getAllowedFacets(){

          return (XSSimpleTypeDecl.FACET_LENGTH | XSSimpleTypeDecl.FACET_MINLENGTH |

                  XSSimpleTypeDecl.FACET_MAXLENGTH | XSSimpleTypeDecl.FACET_PATTERN |

                  XSSimpleTypeDecl.FACET_ENUMERATION | XSSimpleTypeDecl.FACET_WHITESPACE );

    }

    // this method should never be called: XSSimpleTypeDecl is responsible for

    // calling the item type for the convertion

    public Object getActualValue(String content, ValidationContext context)

            throws InvalidDatatypeValueException{

        return content;

    }

    // length of a list type is the number of items in the list

    public int getDataLength(Object value) {

        return ((ListData)value).getLength();

    }

    final static class ListData extends AbstractList<Object> implements ObjectList {

        final Object[] data;

        private String canonical;

        public ListData(Object[] data) {

            this.data = data;

        }

        public synchronized String toString() {

            if (canonical == null) {

                int len = data.length;

                StringBuffer buf = new StringBuffer();

                if (len > 0) {

                    buf.append(data[0].toString());

                }

                for (int i = 1; i < len; i++) {

                    buf.append(' ');

                    buf.append(data[i].toString());

                }

                canonical = buf.toString();

            }

            return canonical;

        }

        public int getLength() {

            return data.length;

        }

        public boolean equals(Object obj) {

            if (!(obj instanceof ListData))

                return false;

            Object[] odata = ((ListData)obj).data;

            int count = data.length;

            if (count != odata.length)

                return false;

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

                if (!data[i].equals(odata[i]))

                    return false;

            }//end of loop

            //everything went fine.

            return true;

        }

        public int hashCode() {

            int hash = 0;

            for (int i = 0; i < data.length; ++i) {

                hash ^= data[i].hashCode();

            }

            return hash;

        }

        public boolean contains(Object item) {

            for (int i = 0;i < data.length; i++) {

                if (item == data[i]) {

                    return true;

                }

            }

            return false;

        }

        public Object item(int index) {

            if (index < 0 || index >= data.length) {

                return null;

            }

            return data[index];

        }

        /*

         * List methods

         */

        public Object get(int index) {

            if (index >= 0 && index < data.length) {

                return data[index];

            }

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

        }

        public int size() {

            return getLength();

        }

    }

} // class ListDV