Hi,

its:

#include <experimental/reflect>

auto operator""_s(unsigned long long v) {
return v * 2;
}

namespace meta = std::experimental::reflect;

using r1 = reflexpr(( 12_s ));
using r2 = meta::get_subexpression_t<r1>;
using r3 = meta::get_callable_t<r2>;

int main() {
static_assert(meta::ParenthesizedExpression<r1>);
static_assert(meta::FunctionCallExpression<r2>);
static_assert(meta::Callable<r3>);
return 0;
}

see: https://compiler-explorer.com/z/oY1E53GEo

BR,
--Matus

On Mon, Feb 21, 2022 at 2:20 AM Cleiton Santoia via SG7 <
sg7_at_[hidden]> wrote:

>
> I´m trying to guess the syntax for reflecting operators and UDL´s, but
> failed :(
>
> struct X {};
> auto operator+(X,X) { return X{}; }
> auto operator""_s(unsigned long long v) { return v * 2; }
> constexpr X x1, x2;
>
> using r1 = reflexpr( operator+(X,X) );
> using r2 = reflexpr( x1 + x2 );
> using r3 = reflexpr( operator""_s(unsigned long long v) );
> using r4 = reflexpr( 12_s );
> https://compiler-explorer.com/z/hWP93dbW7
>
> <source>:11:22: error: operator cannot be used as argument for the
> reflexpr operator
> using r1 = reflexpr( operator+(X,X) );
>
>
> Is any of these syntaxes right ?
> Is this available already ?
>
>
> []
> Cleiton
>
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