val mk_carrier (#elt: Type) (len offset: nat) (s: Seq.seq elt) (p: P.perm) : Tot (carrier elt len)
let mk_carrier
  (#elt: Type)
  (len: nat)
  (offset: nat)
  (s: Seq.seq elt)
  (p: P.perm)
: Tot (carrier elt len)
= let f (i: nat) : Tot (P.fractional elt) =
    if offset + Seq.length s > len || i < offset || i >= offset + Seq.length s
    then None
    else Some (Seq.index s (i - offset), p)
  in
  M.map_literal f
val mk_carrier (#elt: Type) (len offset: nat) (s: Seq.seq elt) (p: P.perm) : Tot (carrier elt len)
let mk_carrier (#elt: Type) (len offset: nat) (s: Seq.seq elt) (p: P.perm) : Tot (carrier elt len) =
let f (i: nat) : Tot (P.fractional elt) =
  if offset + Seq.length s > len || i < offset || i >= offset + Seq.length s
  then None
  else Some (Seq.index s (i - offset), p)
in
M.map_literal f
Steel.ST.HigherArray.fst.checked
Steel.ST.PCMReference.fsti.checked Steel.ST.Loops.fsti.checked Steel.PCMMap.fst.checked Steel.PCMFrac.fst.checked Steel.Memory.fsti.checked prims.fst.checked FStar.SizeT.fsti.checked FStar.Seq.fst.checked FStar.Real.fsti.checked FStar.Pervasives.Native.fst.checked FStar.Pervasives.fsti.checked FStar.Map.fsti.checked FStar.Ghost.fsti.checked FStar.Classical.fsti.checked
Steel.ST.HigherArray.fst
Prims.nat FStar.Seq.Base.seq Steel.FractionalPermission.perm FStar.Map.map_literal Steel.ST.HigherArray.index_t FStar.Ghost.hide Steel.PCMFrac.fractional Prims.op_BarBar Prims.op_GreaterThan Prims.op_Addition FStar.Seq.Base.length Prims.op_LessThan Prims.op_GreaterThanOrEqual FStar.Pervasives.Native.None FStar.Pervasives.Native.tuple2 Prims.bool FStar.Pervasives.Native.Some FStar.Pervasives.Native.Mktuple2 FStar.Seq.Base.index Prims.op_Subtraction Steel.ST.HigherArray.carrier
(*
   Copyright 2022 Microsoft Research

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
*)

module Steel.ST.HigherArray

module P = Steel.PCMFrac
module R = Steel.ST.PCMReference
module M = FStar.Map
module PM = Steel.PCMMap

[@@noextract_to "krml"]
let index_t (len: Ghost.erased nat) : Tot Type0 =
  (i: nat { i < len })

[@@noextract_to "krml"]
let carrier (elt: Type u#a) (len: Ghost.erased nat) : Tot Type =
  PM.map (index_t len) (P.fractional elt)

[@@noextract_to "krml"]
let pcm (elt: Type u#a) (len: Ghost.erased nat) : Tot (P.pcm (carrier elt len)) =
  PM.pointwise (index_t len) (P.pcm_frac #elt)

[@@noextract_to "krml"]
let one (#elt: Type) (#len: Ghost.erased nat) = (pcm elt len).P.p.P.one
let composable (#elt: Type) (#len: Ghost.erased nat) = (pcm elt len).P.p.P.composable
[@@noextract_to "krml"]
let compose (#elt: Type) (#len: Ghost.erased nat) = (pcm elt len).P.p.P.op

[@@noextract_to "krml"]
let mk_carrier
  (#elt: Type)
  (len: nat)
  (offset: nat)
  (s: Seq.seq elt)
  (p: P.perm)
val mk_carrier (#elt: Type) (len offset: nat) (s: Seq.seq elt) (p: P.perm) : Tot (carrier elt len)

    len: Prims.nat ->
    offset: Prims.nat ->
    s: FStar.Seq.Base.seq elt ->
    p: Steel.FractionalPermission.perm
  -> Steel.ST.HigherArray.carrier elt (FStar.Ghost.hide len)