emplace_iterator.hpp

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// SPDX-FileCopyrightText: 2006-2024 Knut Reinert & Freie Universität Berlin
// SPDX-FileCopyrightText: 2016-2024 Knut Reinert & MPI für molekulare Genetik
// SPDX-License-Identifier: BSD-3-Clause
 
#pragma once
 
#include <hibf/interleaved_bloom_filter.hpp>
 
namespace raptor
{
 
class emplace_iterator
{
public:
    using iterator_category = std::output_iterator_tag;
    using value_type = void;
    using difference_type = ptrdiff_t;
    using pointer = void;
    using reference = void;
 
    emplace_iterator() = delete;
    emplace_iterator(emplace_iterator const &) = default;
    emplace_iterator(emplace_iterator &&) = default;
    emplace_iterator & operator=(emplace_iterator const &) = default;
    emplace_iterator & operator=(emplace_iterator &&) = default;
    ~emplace_iterator() = default;
 
    explicit constexpr emplace_iterator(seqan::hibf::interleaved_bloom_filter & ibf, seqan::hibf::bin_index const idx) :
        ibf{std::addressof(ibf)},
        index{idx}
    {}
 
    /* constexpr */ emplace_iterator & operator=(uint64_t const value) noexcept
    {
        assert(ibf != nullptr);
        ibf->emplace(value, index);
        return *this;
    }
 
    [[nodiscard]] constexpr emplace_iterator & operator*() noexcept
    {
        return *this;
    }
 
    constexpr emplace_iterator & operator++() noexcept
    {
        return *this;
    }
 
    constexpr emplace_iterator operator++(int) noexcept
    {
        return *this;
    }
 
private:
    seqan::hibf::interleaved_bloom_filter * ibf{nullptr};
    seqan::hibf::bin_index index{};
};
class emplace_iterator {…};
 
[[nodiscard]] inline constexpr emplace_iterator emplacer(seqan::hibf::interleaved_bloom_filter & ibf,
                                                         seqan::hibf::bin_index const idx)
{
    return emplace_iterator{ibf, idx};
}
 
} // namespace raptor