content: /*
   * Copyright 2013 ZXing authors
   *
   * 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.
   */
  
  package com.ailiwean.core.zxing.core.aztec.encoder;
  
  
  import com.ailiwean.core.zxing.core.common.BitArray;
  
  abstract class Token {
  
    static final Token EMPTY = new SimpleToken(null, 0, 0);
  
    private final Token previous;
  
    Token(Token previous) {
      this.previous = previous;
    }
  
    final Token getPrevious() {
      return previous;
    }
  
    final Token add(int value, int bitCount) {
      return new SimpleToken(this, value, bitCount);
     }
  
    final Token addBinaryShift(int start, int byteCount) {
      //int bitCount = (byteCount * 8) + (byteCount <= 31 ? 10 : byteCount <= 62 ? 20 : 21);
      return new BinaryShiftToken(this, start, byteCount);
    }
  
    abstract void appendTo(BitArray bitArray, byte[] text);
  
  }
  