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open Mo_def
open Mo_types
open Source
open Trivia
open Type
module E = Syntax
module I = Idllib.Syntax
module Set = Idllib.Resolve_import.Set
(* use a functor to allocate temporary shared state *)
module MakeState() = struct
let env = ref Env.empty
let hide = ref Set.empty
module RevMap = Map.Make (struct type t = string * I.typ' let compare = compare end)
let rev = ref RevMap.empty
(* For monomorphization *)
module Stamp = Type.ConEnv
let stamp = ref Stamp.empty
module TypeMap = Map.Make (struct type t = con * typ list let compare = compare end)
let type_map = ref TypeMap.empty
let normalize_name name =
String.map (fun c ->
if c >= '0' && c <= '9' || c >= 'a' && c <= 'z' || c >= 'A' && c <= 'Z'
then c else '_'
) name
let monomorphize_con vs c =
let name = normalize_name (Cons.name c) in
match Cons.kind c with
| Def _ ->
let id = (c, vs) in
let (k, n) =
match TypeMap.find_opt id !type_map with
| None ->
(match Stamp.find_opt c !stamp with
| None ->
let keys = Stamp.keys !stamp in
let k = List.length (List.filter (fun d -> Cons.name c = Cons.name d) keys) in
stamp := Stamp.add c (k, 0) !stamp;
type_map := TypeMap.add id (k, 0) !type_map;
(k, 0)
| Some (k, n) ->
stamp := Stamp.add c (k, n + 1) !stamp;
type_map := TypeMap.add id (k, n + 1) !type_map;
(k, n + 1))
| Some kn -> kn
in
begin
match (k, n) with
| _ when k < 0 || n < 0 -> assert false
| (0, 0) -> name
| (0, n) -> Printf.sprintf "%s_%d" name n
| (k, 0) -> Printf.sprintf "%s__%d" name k
| (k, n) -> Printf.sprintf "%s__%d_%d" name k n
end
| _ -> assert false
let prim = let open I in
function
| Type.Null -> PrimT Null
| Bool -> PrimT Bool
| Nat -> PrimT Nat
| Nat8 -> PrimT Nat8
| Nat16 -> PrimT Nat16
| Nat32 -> PrimT Nat32
| Nat64 -> PrimT Nat64
| Int -> PrimT Int
| Int8 -> PrimT Int8
| Int16 -> PrimT Int16
| Int32 -> PrimT Int32
| Int64 -> PrimT Int64
| Float -> PrimT Float64
| Char -> PrimT Nat32
| Text -> PrimT Text
| Blob -> BlobT
| Principal -> PrincipalT
| Region
| Error -> assert false
let rec typ t =
(match t with
| Any -> I.(PrimT Reserved)
| Non -> I.(PrimT Empty)
| Prim p -> prim p
| Var (s, i) -> assert false
| Con (c, ts) ->
(match Cons.kind c with
| Def (_, t) ->
I.(match open_ ts t with
| Prim p -> prim p
| Any -> PrimT Reserved
| Non -> PrimT Empty
| t ->
let id = monomorphize_con ts c in
match Env.find_opt id !env with
| Some PreT -> VarT (id @@ no_region)
| Some (VarT _ as seen) ->
assert (Set.mem id !hide);
seen
| Some seen ->
assert (Set.mem id !hide |> not);
VarT (RevMap.find (Cons.name c, seen) !rev @@ no_region)
| None -> begin
env := Env.add id PreT !env;
let t = typ (normalize t) in
let rev_key = Cons.name c, t.it in
match RevMap.find_opt rev_key !rev with
| None ->
env := Env.add id t.it !env;
rev := RevMap.add rev_key id !rev;
VarT (id @@ no_region)
| Some id' ->
let canonical = VarT (id' @@ no_region) in
env := Env.add id canonical !env;
hide := Set.add id !hide;
canonical
end)
| _ -> assert false)
| Typ c -> assert false
| Tup ts ->
if ts = [] then
I.(PrimT Null)
else
I.RecordT (tuple ts)
| Array t -> I.VecT (typ t)
| Opt t -> I.OptT (typ t)
| Obj (Object, fs) ->
I.RecordT (fields fs)
| Obj (Actor, fs) -> I.ServT (meths fs)
| Obj (Module, _)
| Obj (Memory, _) -> assert false
| Variant fs ->
I.VariantT (fields fs)
| Func (Shared s, c, tbs, ts1, ts2) ->
let nons = List.map (fun _ -> Non) tbs in
let ts1, ts2 =
(List.map (open_ nons) ts1,
List.map (open_ nons) ts2) in
let t1 = args ts1 in
(match ts2, c with
| [], Returns -> I.FuncT ([I.Oneway @@ no_region], t1, [])
| ts, Promises ->
I.FuncT (
(match s with
| Query -> [I.Query @@ no_region]
| Composite -> [I.Composite @@ no_region]
| Write -> []),
t1, args ts)
| _ -> assert false)
| Named (n, t) ->
(* drop name, Candid only allows names on function argument and return types *)
(typ t).it
| Func _
| Async _
| Mut _
| Pre -> assert false
) @@ no_region
and field {lab; typ = t; src = {region; _}} =
let open Idllib.Escape in
match unescape lab with
| Nat nat ->
I.{label = I.Id nat @@ no_region; typ = typ t} @@ region
| Id id ->
I.{label = I.Named id @@ no_region; typ = typ t} @@ region
and fields fs =
List.map field
(List.filter (fun f -> not (is_typ f.typ)) fs)
and tuple ts =
List.mapi (fun i x ->
let id = Lib.Uint32.of_int i in
I.{label = I.Unnamed id @@ no_region; typ = typ x} @@ no_region
) ts
and args ts =
List.map arg_typ ts
and arg_typ t =
match t with
| Named (name, t) ->
let open Idllib.Escape in
(match unescape name with
| Nat nat ->
I.{name = None; typ = typ t} @@ no_region
| Id id ->
I.{name = Some (id @@ no_region); typ = typ t} @@ no_region)
| t ->
I.{name = None; typ = typ t} @@ no_region
and meths fs =
List.fold_right (fun f list ->
match f.typ with
| Typ c ->
list
| _ ->
let meth =
I.{var = Idllib.Escape.unescape_method f.lab @@ no_region;
meth = typ f.typ} @@ f.src.region in
meth :: list
) fs []
let is_actor_con c =
match Cons.kind c with
| Def ([], Obj (Actor, _)) -> true
| _ -> false
let chase_decs env =
ConSet.iter (fun c ->
if is_actor_con c then ignore (typ (Con (c,[])))
) env.Scope.con_env
let gather_decs () =
Env.fold (fun id t list ->
if Set.mem id !hide then list else
(* TODO: pass corresponding Motoko source region? *)
let dec = I.TypD (id @@ no_region, t @@ no_region) @@ no_region in
dec::list
) !env []
let actor prog =
let open E in
let { body = cub; _ } = (CompUnit.comp_unit_of_prog false prog).it in
match cub.it with
| ProgU _ | ModuleU _ -> None
| ActorU _ -> Some (typ cub.note.note_typ)
| ActorClassU _ ->
(match normalize cub.note.note_typ with
| Func (Local, Returns, [tb], ts1, [t2]) ->
let args = List.map arg_typ (List.map (open_ [Non]) ts1) in
let (_, _, rng) = as_async (normalize (open_ [Non] t2)) in
let actor = typ rng in
Some (I.ClassT (args, actor) @@ cub.at)
| _ -> assert false
)
end
let prog (progs, senv) : I.prog =
let prog = CompUnit.combine_progs progs in
let trivia = prog.note.E.trivia in
let open MakeState() in
let actor = actor prog in
if actor = None then chase_decs senv;
let decs = gather_decs () in
let it = I.{decs; actor} in
{it; at = prog.at; note = I.{filename = ""; trivia}}
let of_actor_type t : I.prog =
let open MakeState() in
let actor = Some (typ t) in
let decs = gather_decs () in
let prog = I.{decs; actor} in
{it = prog; at = no_region; note = I.{filename = ""; trivia = empty_triv_table}}
let of_service_type ts t : I.arg_typ list * I.prog =
let open MakeState() in
let args = List.map arg_typ ts in
let actor = Some (typ t) in
let decs = gather_decs () in
let prog = I.{decs; actor} in
args,
{it = prog; at = no_region; note = I.{filename = ""; trivia = empty_triv_table}}