Program Listing for File HuffmanFMIndex.h

↰ Return to documentation for file (ADS/compression/HuffmanFMIndex.h)

/*--------------------------------------------------------------------------*/
/*-------------------------- File HuffmanFMIndex.h -------------------------*/
/*--------------------------------------------------------------------------*/
/*--------------------------------------------------------------------------*/
/*----------------------------- DEFINITIONS --------------------------------*/
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#ifndef __ADS_HuffmanFMIndex
 #define __ADS_HuffmanFMIndex
                      /* self-identification: #endif constant */

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/*------------------------------ INCLUDES ----------------------------------*/
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#include "ADS/Contract.h"
#include "ADS/compression/BurrowsWheeler.h"
#include "ADS/succinct/BitVector.h"
#include "ADS/succinct/HuffmanWaveletTree.h"

#include <algorithm>
#include <array>
#include <bit>
#include <cstddef>
#include <cstdint>
#include <string>
#include <string_view>
#include <utility>
#include <vector>

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/*--------------------------- NAMESPACE ------------------------------------*/
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namespace ADS {

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/*-------------------------- CLASS HuffmanFMIndex --------------------------*/
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template< class RS = RankSelect >
class HuffmanFMIndex {

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 public:

 explicit HuffmanFMIndex( std::string_view s , std::size_t mu = 32 );

 [[nodiscard]] std::size_t size( void ) const { return( f_n ); }

 [[nodiscard]] std::pair< std::size_t , std::size_t > range(
                                                  std::string_view P ) const;

 [[nodiscard]] std::size_t count( std::string_view P ) const;

 [[nodiscard]] std::vector< std::size_t > locate( std::string_view P ) const;

 [[nodiscard]] std::string extract( std::size_t i , std::size_t j ) const;

 [[nodiscard]] std::size_t sizeInBits( void ) const;

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 private:

 [[nodiscard]] std::size_t place( std::size_t r ) const;

 std::size_t f_n = 0 , f_mu = 1;
 int f_w = 1;
 HuffmanWaveletTree< RS > f_L;
 std::array< std::size_t , 258 > f_C{};
 CompactRankSelect f_mark;
 BitVector f_place;
 BitVector f_row;

 };  // end( class HuffmanFMIndex )

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}  // end( namespace ADS )

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/*-------------------------- IMPLEMENTATION --------------------------------*/
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#include "ADS/compression/impl/HuffmanFMIndex.tpp"

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#endif  /* HuffmanFMIndex.h included */

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/*------------------------ End File HuffmanFMIndex.h -----------------------*/
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