package ocaml-base-compiler

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Official release 5.0.0

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Authors

Xavier Leroy

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5.0.0.tar.gz

sha256=72fa3d0ba19b82fcb9e6c62e0090b9d22e5905c4be0f94faf56904a9377a9e5b

doc/compiler-libs.common/Type_immediacy/index.html

Module `Type_immediacy`

Immediacy status of a type

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