content: package org.apache.lucene.analysis.standard;
  
  /**
   * 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.
   */
  
  import org.apache.lucene.analysis.tokenattributes.CharTermAttribute;
  
  import java.io.Reader;
  import java.io.IOException;
  
  /** @lucene.internal */
  public interface StandardTokenizerInterface {
  
    /** This character denotes the end of file */
    public static final int YYEOF = -1;
  
    /**
     * Copies the matched text into the CharTermAttribute
     */
    public void getText(CharTermAttribute t);
  
    /**
     * Returns the current position.
     */
    public int yychar();
  
    /**
     * Resets the scanner to read from a new input stream.
     * Does not close the old reader.
     *
     * All internal variables are reset, the old input stream 
     * <b>cannot</b> be reused (internal buffer is discarded and lost).
     * Lexical state is set to <tt>ZZ_INITIAL</tt>.
     *
     * @param reader   the new input stream 
     */
    public void yyreset(Reader reader);
  
    /**
     * Returns the length of the matched text region.
     */
    public int yylength();
  
    /**
     * Resumes scanning until the next regular expression is matched,
     * the end of input is encountered or an I/O-Error occurs.
     *
     * @return      the next token, {@link #YYEOF} on end of stream
     * @exception   IOException  if any I/O-Error occurs
     */
    public int getNextToken() throws IOException;
  
  }
  