SuffixArray.h

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/*
 * This file is part of Algorithms library toolkit.
 * Copyright (C) 2017 Jan Travnicek (jan.travnicek@fit.cvut.cz)
 
 * Algorithms library toolkit is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 
 * Algorithms library toolkit is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 
 * You should have received a copy of the GNU General Public License
 * along with Algorithms library toolkit.  If not, see <http://www.gnu.org/licenses/>.
 */
 
#pragma once
 
#include <ext/iostream>
#include <ext/algorithm>
 
#include <alib/string>
#include <alib/set>
#include <alib/trie>
 
#include <common/DefaultSymbolType.h>
 
#include <exception/CommonException.h>
 
#include <string/LinearString.h>
 
#include <alphabet/common/SymbolNormalize.h>
 
namespace indexes {
 
namespace stringology {
 
template < class SymbolType = DefaultSymbolType >
class SuffixArray final {
    ext::vector < unsigned > m_data;
 
    string::LinearString < SymbolType > m_string;
 
public:
    explicit SuffixArray ( ext::vector < unsigned > data, string::LinearString < SymbolType > string );
 
    const ext::vector < unsigned > & getData ( ) const &;
 
    ext::vector < unsigned > && getData ( ) &&;
 
    const string::LinearString < SymbolType > & getString ( ) const &;
 
    string::LinearString < SymbolType > && getString ( ) &&;
 
    const ext::set < SymbolType > & getAlphabet ( ) const & {
        return m_string.getAlphabet ( );
    }
 
    ext::set < SymbolType > && getAlphabet ( ) && {
        return std::move ( m_string ).getAlphabet ( );
    }
 
    void setData ( ext::vector < unsigned > data );
 
    bool removeSymbolFromAlphabet ( const SymbolType & symbol ) {
        return m_string.removeSymbol ( symbol );
    }
 
    auto operator <=> ( const SuffixArray & other ) const {
        return std::tie ( getData ( ), getString ( ) ) <=> std::tie ( other.getData ( ), other.getString ( ) );
    }
 
    bool operator == ( const SuffixArray & other ) const {
        return std::tie ( getData ( ), getString ( ) ) == std::tie ( other.getData ( ), other.getString ( ) );
    }
 
    friend ext::ostream & operator << ( ext::ostream & out, const SuffixArray & instance ) {
        return out << "(SuffixArray " << instance.m_data << ", " << instance.m_string << ")";
    }
};
 
} /* namespace stringology */
 
} /* namespace indexes */
 
namespace indexes {
 
namespace stringology {
 
template < class SymbolType >
SuffixArray < SymbolType >::SuffixArray ( ext::vector < unsigned > data, string::LinearString < SymbolType > string ) : m_data ( std::move ( data ) ), m_string ( std::move ( string ) ) {
}
 
template < class SymbolType >
const ext::vector < unsigned > & SuffixArray < SymbolType >::getData ( ) const & {
    return m_data;
}
 
template < class SymbolType >
ext::vector < unsigned > && SuffixArray < SymbolType >::getData ( ) && {
    return std::move ( m_data );
}
 
template < class SymbolType >
const string::LinearString < SymbolType > & SuffixArray < SymbolType >::getString ( ) const & {
    return m_string;
}
 
template < class SymbolType >
string::LinearString < SymbolType > && SuffixArray < SymbolType >::getString ( ) && {
    return std::move ( m_string );
}
 
template < class SymbolType >
void SuffixArray < SymbolType >::setData ( ext::vector < unsigned > data ) {
    this->m_data = std::move ( data );
}
 
} /* namespace stringology */
 
} /* namespace indexes */
 
namespace core {
 
template < class SymbolType >
struct normalize < indexes::stringology::SuffixArray < SymbolType > > {
    static indexes::stringology::SuffixArray < > eval ( indexes::stringology::SuffixArray < SymbolType > && value ) {
        string::LinearString < DefaultSymbolType > string = normalize < string::LinearString < SymbolType > >::eval ( std::move ( value ).getString ( ) );
 
        return indexes::stringology::SuffixArray < > ( std::move ( value ).getData ( ), std::move ( string ) );
    }
};
 
} /* namespace core */