value_t.hpp

#pragma once
 
#include <array> // array
#include <cstddef> // size_t
#include <cstdint> // uint8_t
#include <string> // string
 
namespace nlohmann
{
namespace detail
{
// JSON type enumeration //

enum class value_t : std::uint8_t
{
    null,             
    object,           
    array,            
    string,           
    boolean,          
    number_integer,   
    number_unsigned,  
    number_float,     
    binary,           
    discarded         
};

inline bool operator<(const value_t lhs, const value_t rhs) noexcept
{
    static constexpr std::array<std::uint8_t, 9> order = {{
            0 /* null */, 3 /* object */, 4 /* array */, 5 /* string */,
            1 /* boolean */, 2 /* integer */, 2 /* unsigned */, 2 /* float */,
            6 /* binary */
        }
    };
 
    const auto l_index = static_cast<std::size_t>(lhs);
    const auto r_index = static_cast<std::size_t>(rhs);
    return l_index < order.size() && r_index < order.size() && order[l_index] < order[r_index];
}
}  // namespace detail
}  // namespace nlohmann