ocaml/bytecomp/switch.mli

83 lines
2.7 KiB
OCaml

(***********************************************************************)
(* *)
(* Objective Caml *)
(* *)
(* Luc Maranget, projet Moscova, INRIA Rocquencourt *)
(* *)
(* Copyright 2000 Institut National de Recherche en Informatique et *)
(* en Automatique. All rights reserved. This file is distributed *)
(* under the terms of the Q Public License version 1.0. *)
(* *)
(***********************************************************************)
(*
This module transforms generic switches in combinations
of if tests and switches.
*)
(* For detecting action sharing, object style *)
type 'a t_store =
{act_get : unit -> 'a array ; act_store : 'a -> int}
val mk_store : ('a -> 'a -> bool) -> 'a t_store
(* Arguments to the Make functor *)
module type S =
sig
(* type of basic tests *)
type primitive
(* basic tests themselves *)
val eqint : primitive
val neint : primitive
val leint : primitive
val ltint : primitive
val geint : primitive
val gtint : primitive
(* type of actions *)
type act
(* Various constructors, for making a binder,
adding one integer, etc. *)
val bind : act -> (act -> act) -> act
val make_offset : act -> int -> act
val make_prim : primitive -> act list -> act
val make_isout : act -> act -> act
val make_isin : act -> act -> act
val make_if : act -> act -> act -> act
(* construct an actual switch :
make_switch arg cases acts
NB: cases is in the value form *)
val make_switch :
act -> int array -> act array -> act
end
(*
Make.zyva mk_const arg low high cases actions where
- mk_const takes an integer sends a constant action.
- arg is the argument of the switch.
- low, high are the interval limits.
- cases is a list of sub-interval and action indices
- actions is an array of actions.
All these arguments specify a switch construct and zyva
returns an action that performs the switch,
*)
module Make :
functor (Arg : S) ->
sig
val zyva :
(int * int) ->
(int -> Arg.act) ->
Arg.act ->
(int * int * int) array ->
Arg.act array ->
Arg.act
val test_sequence :
(int -> Arg.act) ->
Arg.act ->
(int * int * int) array ->
Arg.act array ->
Arg.act
end