peak_utils.hpp

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#pragma once
 
#include <type_traits>
#include <iostream>
 
#if defined(PEAK_ENABLE_FORMAT_SUPPORT) && defined(__has_include)
#    if __has_include(<format>)
#        include <format>
#        include <string_view>
#    endif
#endif
 
namespace peak
{
namespace core
{
template <typename T>
auto operator<<(std::ostream& os, T entry) ->
    typename std::enable_if<std::is_enum<T>::value, decltype(os << ToString(entry))>::type
{
    return os << ToString(entry);
}
 
namespace nodes
{
template <typename T>
auto operator<<(std::ostream& os, T entry) ->
    typename std::enable_if<std::is_enum<T>::value, decltype(os << ToString(entry))>::type
{
    return os << ToString(entry);
}
} /* namespace nodes */
} /* namespace core */
} /* namespace peak */
 
#if defined(PEAK_ENABLE_FORMAT_SUPPORT) && defined(__cpp_lib_format)
 
template <typename T>
requires std::is_enum_v<T>&& requires(T e)
{
    ToString(e);
}
struct std::formatter<T> : std::formatter<std::string_view>
{
    auto format(T e, std::format_context& ctx) const
    {
        return std::formatter<std::string_view>::format(ToString(e), ctx);
    }
};
 
#endif