fmt_appender_adaptor.hpp

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#pragma once
 
#include <fmt/base.h>
 
#include <cstddef>
#include <iterator>
 
template <typename CharType = char>
// NOLINTNEXTLINE(readability-identifier-naming) - rational: follow {fmt} conventions
struct fmt_appender_wrapper
{
    fmt::basic_appender<CharType> out;
 
    using difference_type = std::ptrdiff_t;
    using value_type = void;
    using reference = void;
    using pointer = void;
    using iterator_category = std::output_iterator_tag;
 
    fmt_appender_wrapper& operator*() { return *this; }
 
    fmt_appender_wrapper& operator++() { return *this; }
 
    fmt_appender_wrapper& operator++(int) { return *this; }
 
    template <typename T>
    fmt_appender_wrapper& operator=(const T& value) {
        out = value;
        return *this;
    }
};