/*
 * Copyright 2014 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.
 */

#import "ZXAztecBinaryShiftToken.h"
#import "ZXAztecSimpleToken.h"
#import "ZXAztecToken.h"
#import "ZXBitArray.h"

@implementation ZXAztecToken

- (id)initWithPrevious:(ZXAztecToken *)previous {
  if (self = [super init]) {
    _previous = previous;
  }

  return self;
}

+ (ZXAztecToken *)empty {
  return [[ZXAztecSimpleToken alloc] initWithPrevious:nil value:0 bitCount:0];
}

- (ZXAztecToken *)add:(int)value bitCount:(int)bitCount {
  return [[ZXAztecSimpleToken alloc] initWithPrevious:self value:value bitCount:bitCount];
}

- (ZXAztecToken *)addBinaryShift:(int)start byteCount:(int)byteCount {
//  int bitCount = (byteCount * 8) + (byteCount <= 31 ? 10 : byteCount <= 62 ? 20 : 21);
  return [[ZXAztecBinaryShiftToken alloc] initWithPrevious:self binaryShiftStart:start binaryShiftByteCount:byteCount];
}

- (void)appendTo:(ZXBitArray *)bitArray text:(ZXByteArray *)text {
  @throw [NSException exceptionWithName:NSInternalInconsistencyException
                                 reason:[NSString stringWithFormat:@"You must override %@ in a subclass", NSStringFromSelector(_cmd)]
                               userInfo:nil];
}

@end