#pragma once
#include "prelude/basic.mpv"

#define DECL_SETUP(T)  \
  type T ## _prec.     \
  type T ## _tmpl.     \
  fun trusted_ ## T(T ## _prec) : T [private]. \
  fun prepare_ ## T(T) : T ## _tmpl.     \
  fun setup_ ## T(T  ## _tmpl) : T       \
    reduc forall v:T;                    \
      setup_ ## T(prepare_ ## T(v)) = v  \
    [private].                           \
  fun make_trusted_ ## T(T ## _prec) : T ## _tmpl \
    reduc forall v:T ## _prec;           \
      make_trusted_ ## T(v) = prepare_ ## T(trusted_ ## T(v)).