hasher.hpp

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// Copyright (c) 2026 Ryan P. Nicholl <rnicholl@protonmail.com>
 
#ifndef RPNXQUERYGRAPH_HASHER_HPP
#define RPNXQUERYGRAPH_HASHER_HPP

 
#include "rpnx/serialization4.hpp"
 
#include <functional>
#include <type_traits>
#include <typeindex>
 
namespace rpnx::querygraph
{
    template < typename T >
    struct hasher
    {
        auto operator()(T const& value) const -> std::size_t
        {
            if constexpr (std::is_same_v< T, std::type_index >)
            {
                return std::hash< std::type_index >{}(value);
            }
            else
            {
                return rpnx::serial4::hash{}(value);
            }
        }
    };
} // namespace rpnx::querygraph
 
#endif // RPNXQUERYGRAPH_HASHER_HPP