inc_dec_operator.h

 
//          Copyright John McFarlane 2019.
// Distributed under the Boost Software License, Version 1.0.
//    (See accompanying file ../LICENSE_1_0.txt or copy at
//          http://www.boost.org/LICENSE_1_0.txt)
 
#if !defined(CNL_IMPL_WRAPPER_INC_DEC_OPERATOR_H)
#define CNL_IMPL_WRAPPER_INC_DEC_OPERATOR_H
 
#include "../custom_operator/definition.h"
#include "../custom_operator/native_tag.h"
#include "definition.h"
#include "rep_of.h"
#include "to_rep.h"
 
namespace cnl {
    template<_impl::prefix_op Operator, _impl::any_wrapper Number>
    struct custom_operator<Operator, op_value<Number>> {
        constexpr auto& operator()(Number& rhs) const
        {
            custom_operator<Operator, op_value<_impl::rep_of_t<Number>, _impl::tag_of_t<Number>>>{}(
                    _impl::to_rep(rhs));
            return rhs;
        }
    };
 
    template<_impl::postfix_op Operator, _impl::any_wrapper Number>
    struct custom_operator<Operator, op_value<Number, _impl::native_tag>> {
        constexpr auto operator()(Number& lhs) const
        {
            return _impl::from_rep<Number>(
                    custom_operator<Operator, op_value<_impl::rep_of_t<Number>, _impl::tag_of_t<Number>>>{}(
                            _impl::to_rep(lhs)));
        }
    };
}
 
#endif  // CNL_IMPL_WRAPPER_INC_DEC_OPERATOR_H