inplace_proxiable_targettemplate <class T, class F>
concept inplace_proxiable_target = proxiable</* inplace-ptr<T> */, F>;
The concept inplace_proxiable_target<T, F> specifies that a value type T, when wrapped by an implementation-defined non-allocating pointer type, models a contained value type of proxy<F>. The size and alignment of this implementation-defined pointer type are guaranteed to be equal to those of type T.
#include <array>
#include "proxy.h"
// By default, the maximum pointer size defined by pro::facade_builder
// is 2 * sizeof(void*). This value can be overridden by `restrict_layout`.
struct Any : pro::facade_builder::build {};
int main() {
// sizeof(int) is usually not greater than sizeof(void*) for modern
// 32/64-bit compilers
static_assert(pro::inplace_proxiable_target<int, Any>);
// sizeof(std::array<int, 100>) is usually greater than 2 * sizeof(void*)
static_assert(!pro::inplace_proxiable_target<std::array<int, 100>, Any>);
}