001/*-------------------------------------------------------------------------+
002|                                                                          |
003| Copyright 2005-2011 The ConQAT Project                                   |
004|                                                                          |
005| Licensed under the Apache License, Version 2.0 (the "License");          |
006| you may not use this file except in compliance with the License.         |
007| You may obtain a copy of the License at                                  |
008|                                                                          |
009|    http://www.apache.org/licenses/LICENSE-2.0                            |
010|                                                                          |
011| Unless required by applicable law or agreed to in writing, software      |
012| distributed under the License is distributed on an "AS IS" BASIS,        |
013| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
014| See the License for the specific language governing permissions and      |
015| limitations under the License.                                           |
016+-------------------------------------------------------------------------*/
017package eu.cqse.check.framework.scanner;
018
019import java.io.IOException;
020
021import eu.cqse.check.framework.scanner.ETokenType.ETokenClass;
022
023/**
024 * Lenient scanner that, in contrast to {@link IScanner}, does not throw
025 * {@link ScannerException}s for unrecognized characters, but returns tokens of
026 * token class {@link ETokenClass#ERROR} and resumes scanning.
027 */
028public interface ILenientScanner extends IScanner {
029
030        /**
031         * Returns the next token.
032         * 
033         * @return the next token. Returns {@link ETokenType#EOF} when current file
034         *         is entirely scanned.
035         * @throws IOException
036         *             Thrown if the scanner encounters problem during file I/O.
037         */
038        @Override
039        public IToken getNextToken() throws IOException;
040
041}