ocaml-base-compiler

Official release 4.12.1
IN THIS PACKAGE
type t =
| Unknown(*

We don't know anything

*)
| Always(*

We know for sure that values of this type are always immediate

*)
| Always_on_64bits(*

We know for sure that values of this type are always immediate on 64 bit platforms. For other platforms, we know nothing.

*)
module Violation : sig ... end
val coerce : t -> as_:t -> ( unit, Violation.t ) result

coerce t ~as_ returns Ok () iff t can be seen as type immediacy as_. For instance, Always can be seen as Always_on_64bits but the opposite is not true. Return Error _ if the coercion is not possible.

val of_attributes : Parsetree.attributes -> t

Return the immediateness of a type as indicated by the user via attributes