How to use

CanonicalFast64CodeWordDecoder

in

it.unimi.dsi.compression

public int decode( final BooleanIterator iterator ) {
  final int[] lengthIncrement = this.lengthIncrement;
  final long[] lastCodeWordPlusOne = this.lastCodeWordPlusOne;
  int curr = 0, l; 
  long x;
  x = readLong( iterator, lengthIncrement[ curr ] );
  
  for(;;) {
    if ( x < lastCodeWordPlusOne[ curr ] ) return symbol[ (int)( howManyUpToBlock[ curr ] - lastCodeWordPlusOne[ curr ] + x ) ];
    l = lengthIncrement[ ++curr ];
    x = x << l | readLong( iterator, l );
  }
}

/**
 * This verifies that a code book constructed from a given set of
 * frequencies may be reconstructed from the cord word bit lengths, given in
 * a non-decreasing order, together with the symbols in a correlated array.
 * 
 * @param frequency
 */
public void doRoundTripTest(final int[] frequency) {
  
  final DecoderInputs decoderInputs = new DecoderInputs();
  
  final HuffmanCodec codec = new HuffmanCodec(frequency, decoderInputs);
  if (log.isDebugEnabled()) {
    log.debug(printCodeBook(codec.codeWords()) + "\nlength[]="
        + Arrays.toString(decoderInputs.getLengths()) + "\nsymbol[]="
        + Arrays.toString(decoderInputs.getSymbols()));
  }
  
  final CanonicalFast64CodeWordDecoder actualDecoder = new CanonicalFast64CodeWordDecoder(
      decoderInputs.getLengths(), decoderInputs.getSymbols());
  for (int i = 0; i < frequency.length; i++) {
    final BooleanIterator coded = codec.coder().encode(i/*symbol*/);
    
    assertEquals(i, actualDecoder.decode(coded));
    
  }
}

this.decoder = new CanonicalFast64CodeWordDecoder(
    decoderInputs.getLengths(), decoderInputs
        .getSymbols());

/**
 * This verifies that a code book constructed from a given set of
 * frequencies may be reconstructed from the cord word bit lengths, given in
 * a non-decreasing order, together with the symbols in a correlated array.
 * 
 * @param frequency
 */
public void doRoundTripTest(final int[] frequency) {
  
  final DecoderInputs decoderInputs = new DecoderInputs();
  
  final HuffmanCodec codec = new HuffmanCodec(frequency, decoderInputs);
  if (log.isDebugEnabled()) {
    log.debug(printCodeBook(codec.codeWords()) + "\nlength[]="
        + Arrays.toString(decoderInputs.getLengths()) + "\nsymbol[]="
        + Arrays.toString(decoderInputs.getSymbols()));
  }
  
  final CanonicalFast64CodeWordDecoder actualDecoder = new CanonicalFast64CodeWordDecoder(
      decoderInputs.getLengths(), decoderInputs.getSymbols());
  for (int i = 0; i < frequency.length; i++) {
    final BooleanIterator coded = codec.coder().encode(i/*symbol*/);
    
    assertEquals(i, actualDecoder.decode(coded));
    
  }
}

this.decoder = new CanonicalFast64CodeWordDecoder(
    decoderInputs.getLengths(), decoderInputs
        .getSymbols());

final CanonicalFast64CodeWordDecoder actualDecoder = new CanonicalFast64CodeWordDecoder(
    decoderInputs.getLengths(), decoderInputs.getSymbols());
    assertEquals(value[i]/* symbol */, actualDecoder.decode(ibs));

  if (size == 1) codeWord[0] = LongArrayBitVector.getInstance();
  coder = new Fast64CodeWordCoder(codeWord, new long[size]);
  decoder = new CanonicalFast64CodeWordDecoder(new int[size], new int[size]);
  return;
decoder = new CanonicalFast64CodeWordDecoder(length, symbol);

public int decode( final BooleanIterator iterator ) {
  final int[] lengthIncrement = this.lengthIncrement;
  final long[] lastCodeWordPlusOne = this.lastCodeWordPlusOne;
  int curr = 0, l; 
  long x;
  x = readLong( iterator, lengthIncrement[ curr ] );
  
  for(;;) {
    if ( x < lastCodeWordPlusOne[ curr ] ) return symbol[ (int)( howManyUpToBlock[ curr ] - lastCodeWordPlusOne[ curr ] + x ) ];
    l = lengthIncrement[ ++curr ];
    x = x << l | readLong( iterator, l );
  }
}

final CanonicalFast64CodeWordDecoder actualDecoder = new CanonicalFast64CodeWordDecoder(
    decoderInputs.getLengths(), decoderInputs.getSymbols());
    assertEquals(value[i]/* symbol */, actualDecoder.decode(ibs));

  decoderInputs.length = new int[size];
  decoderInputs.symbol = new int[size];
  decoder = new CanonicalFast64CodeWordDecoder( decoderInputs.length, decoderInputs.symbol );
  return;
    + ", but length[0]="
    + length[0]; 
decoder = new CanonicalFast64CodeWordDecoder( decoderInputs.length, decoderInputs.symbol);

@Override
public int decode(final BooleanIterator iterator) {
  final int[] lengthIncrement = this.lengthIncrement;
  final long[] lastCodeWordPlusOne = this.lastCodeWordPlusOne;
  int curr = 0, l;
  long x;
  x = readLong(iterator, lengthIncrement[curr]);
  for(;;) {
    if (x < lastCodeWordPlusOne[curr]) return symbol[(int)(howManyUpToBlock[curr] - lastCodeWordPlusOne[curr] + x)];
    l = lengthIncrement[++curr];
    x = x << l | readLong(iterator, l);
  }
}

  decoderInputs.length = new int[size];
  decoderInputs.symbol = new int[size];
  decoder = new CanonicalFast64CodeWordDecoder( decoderInputs.length, decoderInputs.symbol );
  return;
    + ", but length[0]="
    + length[0]; 
decoder = new CanonicalFast64CodeWordDecoder( decoderInputs.length, decoderInputs.symbol);