fmt_compat.hpp

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#pragma once
 
/// @file userver/utils/fmt_compat.hpp
/// @brief Compatibility shims for different {fmt} library versions.
/// @ingroup userver_universal
 
#include <fmt/core.h>
 
#if FMT_VERSION < 80000
#define USERVER_FMT_CONST
 
/// @brief `{fmt}` compatibility shims across supported versions.
namespace fmt {
 
template <typename S>
const S& runtime(const S& s) {
    return s;
}
 
}  // namespace fmt
#else
#define USERVER_FMT_CONST const
#endif