001    /*
002     *  Licensed to the Apache Software Foundation (ASF) under one
003     *  or more contributor license agreements.  See the NOTICE file
004     *  distributed with this work for additional information
005     *  regarding copyright ownership.  The ASF licenses this file
006     *  to you under the Apache License, Version 2.0 (the
007     *  "License"); you may not use this file except in compliance
008     *  with the License.  You may obtain a copy of the License at
009     *  
010     *    http://www.apache.org/licenses/LICENSE-2.0
011     *  
012     *  Unless required by applicable law or agreed to in writing,
013     *  software distributed under the License is distributed on an
014     *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015     *  KIND, either express or implied.  See the License for the
016     *  specific language governing permissions and limitations
017     *  under the License. 
018     *  
019     */
020    package org.apache.directory.shared.asn1.ber.tlv;
021    
022    
023    /**
024     * Stores the different states of a PDU parsing.
025     * 
026     * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
027     * @version $Rev: 664290 $, $Date: 2008-06-07 08:28:06 +0200 (Sat, 07 Jun 2008) $
028     */
029    public class TLVStateEnum
030    {
031        // ~ Static fields/initializers
032        // -----------------------------------------------------------------
033    
034        /** Start means that the deconding hasn't read the first byte */
035        public static final int TAG_STATE_START = 0x00;
036    
037        /** Pending means that the Type Tag is contained in more that one byte */
038        public static final int TAG_STATE_PENDING = 0x01;
039    
040        /** End means that the Type is totally read */
041        public static final int TAG_STATE_END = 0x02;
042    
043        /**
044         * Overflow could have two meaning : either there are more than 5 bytes to
045         * encode the value (5 bytes = 5bits + 4*7 bits = 33 bits) or the value that
046         * is represented by those bytes is over MAX_INTEGER
047         */
048        public static final int TAG_STATE_OVERFLOW = 0x04;
049    
050        /** Start means that the decoding hasn't read the first byte */
051        public static final int LENGTH_STATE_START = 0x08;
052    
053        /** Pending means that the Type length is contained in more that one byte */
054        public static final int LENGTH_STATE_PENDING = 0x10;
055    
056        /** End means that the Length is totally read */
057        public static final int LENGTH_STATE_END = 0x20;
058    
059        /** Start means that the decoding hasn't read the first byte */
060        public static final int VALUE_STATE_START = 0x40;
061    
062        /** Pending means that the Type Value is contained in more that one byte */
063        public static final int VALUE_STATE_PENDING = 0x80;
064    
065        /** End means that the Value is totally read */
066        public static final int VALUE_STATE_END = 0x100;
067    
068        /** The decoding of a TLV is done */
069        public static final int TLV_STATE_DONE = 0x200;
070    
071        /** The decoding of a PDU is done */
072        public static final int PDU_DECODED = 0x400;
073    }