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(* SPDX-License-Identifier: AGPL-3.0-or-later *)
(* Copyright © 2021-2024 OCamlPro *)
(* Written by the Owi programmers *)
open Syntax
type t =
{ typ : Text.func_type Array.t
; typ_names : (string, int) Hashtbl.t
; global_names : (string, int) Hashtbl.t
; table_names : (string, int) Hashtbl.t
; mem_names : (string, int) Hashtbl.t
; func_names : (string, int) Hashtbl.t
; elem_names : (string, int) Hashtbl.t
; data_names : (string, int) Hashtbl.t
}
let pp_table fmt tbl =
Fmt.iter_bindings
~sep:(fun fmt () -> Fmt.pf fmt " ; ")
Hashtbl.iter
(fun fmt (name, n) -> Fmt.pf fmt "(%S, %d)" name n)
fmt tbl
let pp fmt
{ typ
; typ_names
; global_names
; table_names
; mem_names
; func_names
; elem_names
; data_names
} =
Fmt.pf fmt
"Types: %a@\n\
Types names: %a@\n\
Global names: %a@\n\
Table names: %a@\n\
Mem names: %a@\n\
Func names: %a@\n\
Elem names: %a@\n\
Data names: %a@\n"
(Fmt.array Text.pp_func_type)
typ pp_table typ_names pp_table global_names pp_table table_names pp_table
mem_names pp_table func_names pp_table elem_names pp_table data_names
module Typetbl = Hashtbl.Make (struct
type t = Text.func_type
let equal = Text.func_type_eq
let hash = Hashtbl.hash
end)
let assign_types typ function_type :
Text.func_type Array.t * (string, int) Hashtbl.t =
let all_types = Typetbl.create 64 in
let named_types = Hashtbl.create 64 in
let declared_types = Dynarray.create () in
Array.iter
(fun (name, typ) ->
let id = Dynarray.length declared_types in
begin match name with
| None -> ()
| Some name -> Hashtbl.add named_types name id
end;
Dynarray.add_last declared_types typ;
Typetbl.add all_types typ id )
typ;
Array.iter
(fun typ ->
match Typetbl.find_opt all_types typ with
| Some _id -> ()
| None ->
let id = Dynarray.length declared_types in
Dynarray.add_last declared_types typ;
Typetbl.add all_types typ id )
function_type;
let declared_types = Dynarray.to_array declared_types in
(declared_types, named_types)
let get_origin_name (get_name : 'a -> string option) (elt : ('a, 'b) Origin.t) :
string option =
match elt with
| Local v -> get_name v
| Imported { assigned_name; _ } -> assigned_name
let name kind ~get_name values =
let named = Hashtbl.create 64 in
let+ () =
array_iteri
(fun i elt_v ->
match get_name elt_v with
| None -> Ok ()
| Some name ->
if Hashtbl.mem named name then
Fmt.error_msg "duplicate %s %s" kind name
else begin
Hashtbl.add named name i;
Ok ()
end )
values
in
named
let check_type_id (types : Text.func_type Array.t)
(typ_names : (string, int) Hashtbl.t) (id, func_type) =
let id =
match id with
| Text.Raw i -> i
| Text name -> (
match Hashtbl.find_opt typ_names name with
| None -> assert false
| Some v -> v )
in
if id >= Array.length types then Error (`Unknown_type (Text.Raw id))
else
let func_type' = Array.unsafe_get types id in
if not (Text.func_type_eq func_type func_type') then
Error `Inline_function_type
else Ok ()
let of_grouped
({ global; table; mem; func; elem; data; type_checks; typ; function_type; _ } :
Grouped.t ) : t Result.t =
Log.debug (fun m -> m "assigning ...");
let typ, typ_names = assign_types typ function_type in
let* global_names =
name "global"
~get_name:(get_origin_name (fun ({ id; _ } : Text.Global.t) -> id))
global
in
let* table_names =
name "table"
~get_name:(get_origin_name (fun ((id, _) : Text.Table.t) -> id))
table
in
let* mem_names =
name "mem"
~get_name:(get_origin_name (fun ((id, _) : Text.Mem.t) -> id))
mem
in
let* func_names =
name "func"
~get_name:(get_origin_name (fun ({ id; _ } : Text.Func.t) -> id))
func
in
let* elem_names =
name "elem" ~get_name:(fun (elem : Text.Elem.t) -> elem.id) elem
in
let* data_names =
name "data" ~get_name:(fun (data : Text.Data.t) -> data.id) data
in
let+ () = array_iter (check_type_id typ typ_names) type_checks in
let modul =
{ typ
; typ_names
; global_names
; table_names
; mem_names
; func_names
; elem_names
; data_names
}
in
Log.debug (fun m -> m "%a" pp modul);
modul
let find (names : (string, int) Hashtbl.t) err : _ -> Binary.indice Result.t =
function
| Text.Raw i -> Ok i
| Text name -> (
match Hashtbl.find_opt names name with None -> Error err | Some i -> Ok i )
let find_func modul id = find modul.func_names (`Unknown_func id) id
let find_global modul id = find modul.global_names (`Unknown_global id) id
let find_memory modul id = find modul.mem_names (`Unknown_memory id) id
let find_table modul id = find modul.table_names (`Unknown_table id) id
let find_data modul id = find modul.data_names (`Unknown_data id) id
let find_elem modul id = find modul.elem_names (`Unknown_elem id) id
let find_type modul id = find modul.typ_names (`Unknown_type id) id
let get_type modul idx =
if idx >= Array.length modul.typ then None
else Some (Array.unsafe_get modul.typ idx)
let get_types modul = modul.typ
let find_raw_type modul func_type =
match Array.find_index (Text.func_type_eq func_type) modul.typ with
| None -> assert false
| Some idx -> idx