ignore_output_iterator.hpp

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// -----------------------------------------------------------------------------------------------------
// Copyright (c) 2006-2020, Knut Reinert & Freie Universität Berlin
// Copyright (c) 2016-2020, Knut Reinert & MPI für molekulare Genetik
// This file may be used, modified and/or redistributed under the terms of the 3-clause BSD-License
// shipped with this file and also available at: https://github.com/seqan/seqan3/blob/master/LICENSE.md
// -----------------------------------------------------------------------------------------------------
 
#pragma once
 
#include <seqan3/core/platform.hpp>
 
namespace seqan3::detail
{
 
class ignore_output_iterator
{
public:
 
    using value_type        = void;
    using reference         = void;
    using pointer           = void;
    using difference_type   = std::ptrdiff_t;
    using iterator_category = std::output_iterator_tag;
 
    ignore_output_iterator() = default;                                            
    ignore_output_iterator(ignore_output_iterator const &) = default;              
    ignore_output_iterator(ignore_output_iterator &&) = default;                   
    ignore_output_iterator & operator= (ignore_output_iterator const &) = default; 
    ignore_output_iterator & operator= (ignore_output_iterator &&) = default;      
    ~ignore_output_iterator() = default;                                           
 
    template <typename type>
    constexpr ignore_output_iterator & operator= (type const /*v*/) noexcept
    {
        return *this;
    }
 
    constexpr ignore_output_iterator & operator* () noexcept
    {
        return *this;
    }
 
    constexpr ignore_output_iterator & operator++ () noexcept
    {
        return *this;
    }
 
    constexpr ignore_output_iterator & operator++ (int) noexcept
    {
        return *this;
    }
};
 
} // namespace seqan3::detail