package org.apache.lucene.analysis;

/**
 * Copyright 2004 The Apache Software Foundation
 *
 * Licensed 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 java.io.Reader;
import java.io.IOException;

/** A Tokenizer is a TokenStream whose input is a Reader.
  

  This is an abstract class.
 */

public abstract class Tokenizer extends TokenStream {
  /** The text source for this Tokenizer. */
  protected Reader input;

  /** Construct a tokenizer with null input. */
  protected Tokenizer() {}

  /** Construct a token stream processing the given input. */
  protected Tokenizer(Reader input) {
    this.input = input;
  }

  /** By default, closes the input Reader. */
  public void close() throws IOException {
    input.close();
  }
}