Traits.h

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// Copyright András Vukics 2006–2026. Distributed under the Boost Software License, Version 1.0. (See accompanying file LICENSE.txt)
#pragma once
 
#define FWD(x) std::forward<decltype(x)>(x)
 
#include <boost/hana.hpp>
namespace hana=boost::hana;
 
#include <boost/json.hpp>
 
#include <type_traits>
 
 
namespace cppqedutils {
 
namespace json = boost::json ;
using LogTree = json::object ;
 
std::string toStringJSON(auto&& v) {return json::serialize( json::value_from( FWD(v) ) ) ;}
 
} // cppqedutils
 
 
namespace cppqedutils {
 
template <typename T>
constexpr auto passByValue_v=std::nullopt;
 
 
template <typename State> struct ReferenceMF : std::type_identity<std::add_lvalue_reference_t<State>> {};
 
template <typename State> using Reference = typename ReferenceMF<State>::type;
 
template <typename State> struct ConstReferenceMF : std::type_identity<std::add_lvalue_reference_t<std::add_const_t<State>>> {};
 
template <typename State> using ConstReference = typename ConstReferenceMF<State>::type;
 
} // cppqedutils