| /* |
| * 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 org.apache.directory.shared.kerberos.codec.methodData; |
| |
| |
| import org.apache.directory.api.asn1.actions.CheckNotNullLength; |
| import org.apache.directory.api.asn1.ber.grammar.AbstractGrammar; |
| import org.apache.directory.api.asn1.ber.grammar.Grammar; |
| import org.apache.directory.api.asn1.ber.grammar.GrammarTransition; |
| import org.apache.directory.api.asn1.ber.tlv.UniversalTag; |
| import org.apache.directory.shared.kerberos.codec.methodData.actions.AddPaData; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| |
| /** |
| * This class implements the METHOD-DATA structure. All the actions are declared |
| * in this class. As it is a singleton, these declaration are only done once. If |
| * an action is to be added or modified, this is where the work is to be done ! |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| public final class MethodDataGrammar extends AbstractGrammar<MethodDataContainer> |
| { |
| /** The logger */ |
| static final Logger LOG = LoggerFactory.getLogger( MethodDataGrammar.class ); |
| |
| /** A speedup for logger */ |
| static final boolean IS_DEBUG = LOG.isDebugEnabled(); |
| |
| /** The instance of grammar. MethodDataGrammar is a singleton */ |
| private static Grammar<MethodDataContainer> instance = new MethodDataGrammar(); |
| |
| |
| /** |
| * Creates a new MethodDataGrammar object. |
| */ |
| @SuppressWarnings("unchecked") |
| private MethodDataGrammar() |
| { |
| setName( MethodDataGrammar.class.getName() ); |
| |
| // Create the transitions table |
| super.transitions = new GrammarTransition[MethodDataStatesEnum.LAST_METHOD_DATA_STATE.ordinal()][256]; |
| |
| // ============================================================================================ |
| // METHOD-DATA |
| // ============================================================================================ |
| // -------------------------------------------------------------------------------------------- |
| // Transition from METHOD-DATA init to METHOD-DATA SEQ |
| // -------------------------------------------------------------------------------------------- |
| // METHOD-DATA ::= SEQUENCE |
| super.transitions[MethodDataStatesEnum.START_STATE.ordinal()][UniversalTag.SEQUENCE.getValue()] = |
| new GrammarTransition<MethodDataContainer>( |
| MethodDataStatesEnum.START_STATE, |
| MethodDataStatesEnum.METHOD_DATA_SEQ_STATE, |
| UniversalTag.SEQUENCE, |
| new CheckNotNullLength<MethodDataContainer>() ); |
| |
| // -------------------------------------------------------------------------------------------- |
| // Transition from METHOD-DATA SEQ to PA-DATA |
| // -------------------------------------------------------------------------------------------- |
| // METHOD-DATA ::= SEQUENCE OF <PA-DATA> |
| // |
| super.transitions[MethodDataStatesEnum.METHOD_DATA_SEQ_STATE.ordinal()][UniversalTag.SEQUENCE.getValue()] = |
| new GrammarTransition<MethodDataContainer>( |
| MethodDataStatesEnum.METHOD_DATA_SEQ_STATE, |
| MethodDataStatesEnum.METHOD_DATA_SEQ_STATE, |
| UniversalTag.SEQUENCE, |
| new AddPaData() ); |
| } |
| |
| |
| /** |
| * Get the instance of this grammar |
| * |
| * @return An instance on the METHOD-DATA Grammar |
| */ |
| public static Grammar<MethodDataContainer> getInstance() |
| { |
| return instance; |
| } |
| } |