| /* |
| * 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.ldap.schema.syntax.parser; |
| |
| |
| import java.text.ParseException; |
| |
| import org.apache.directory.shared.ldap.schema.syntax.AbstractSchemaDescription; |
| import org.apache.directory.shared.ldap.schema.syntax.NameFormDescription; |
| |
| import antlr.RecognitionException; |
| import antlr.TokenStreamException; |
| |
| |
| /** |
| * A parser for RFC 4512 name form descriptons |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| * @version $Rev$, $Date$ |
| */ |
| public class NameFormDescriptionSchemaParser extends AbstractSchemaParser |
| { |
| |
| /** |
| * Creates a schema parser instance. |
| */ |
| public NameFormDescriptionSchemaParser() |
| { |
| } |
| |
| |
| /** |
| * Parses a name form description according to RFC 4512: |
| * |
| * <pre> |
| * NameFormDescription = LPAREN WSP |
| * numericoid ; object identifier |
| * [ SP "NAME" SP qdescrs ] ; short names (descriptors) |
| * [ SP "DESC" SP qdstring ] ; description |
| * [ SP "OBSOLETE" ] ; not active |
| * SP "OC" SP oid ; structural object class |
| * SP "MUST" SP oids ; attribute types |
| * [ SP "MAY" SP oids ] ; attribute types |
| * extensions WSP RPAREN ; extensions |
| * </pre> |
| * |
| * @param nameFormDescription the name form description to be parsed |
| * @return the parsed NameFormDescription bean |
| * @throws ParseException if there are any recognition errors (bad syntax) |
| */ |
| public synchronized NameFormDescription parseNameFormDescription( String nameFormDescription ) |
| throws ParseException |
| { |
| |
| if ( nameFormDescription == null ) |
| { |
| throw new ParseException( "Null", 0 ); |
| } |
| |
| reset( nameFormDescription ); // reset and initialize the parser / lexer pair |
| |
| try |
| { |
| NameFormDescription nfd = parser.nameFormDescription(); |
| return nfd; |
| } |
| catch ( RecognitionException re ) |
| { |
| String msg = "Parser failure on name form description:\n\t" + nameFormDescription; |
| msg += "\nAntlr message: " + re.getMessage(); |
| msg += "\nAntlr column: " + re.getColumn(); |
| throw new ParseException( msg, re.getColumn() ); |
| } |
| catch ( TokenStreamException tse ) |
| { |
| String msg = "Parser failure on name form description:\n\t" + nameFormDescription; |
| msg += "\nAntlr message: " + tse.getMessage(); |
| throw new ParseException( msg, 0 ); |
| } |
| |
| } |
| |
| |
| public AbstractSchemaDescription parse( String schemaDescription ) throws ParseException |
| { |
| return parseNameFormDescription( schemaDescription ); |
| } |
| |
| } |