catala/compiler/shared_ast/program.ml
Louis Gesbert e224e87f71 Wip support for modules
(first working dynload test with compilation done by manual calls to ocaml)

A few pieces of the puzzle:

* Loading of interfaces only from Catala files
* Registration of toplevel values in modules compiled to OCaml, to allow access
  using dynlink
* Shady conversion from OCaml runtime values to/from Catala expressions, to
  allow interop (ffi) of compiled modules and the interpreter
2023-06-15 17:56:57 +02:00

96 lines
3.1 KiB
OCaml

(* This file is part of the Catala compiler, a specification language for tax
and social benefits computation rules. Copyright (C) 2020-2022 Inria,
contributor: Denis Merigoux <denis.merigoux@inria.fr>, Alain Delaët-Tixeuil
<alain.delaet--tixeuil@inria.fr>, Louis Gesbert <louis.gesbert@inria.fr>
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. *)
open Definitions
let map_exprs ~f ~varf { code_items; decl_ctx } =
Bindlib.box_apply
(fun code_items -> { code_items; decl_ctx })
(Scope.map_exprs ~f ~varf code_items)
let fold_left_exprs ~f ~init { code_items; decl_ctx = _ } =
Scope.fold_left ~f:(fun acc e _ -> f acc e) ~init code_items
let fold_right_exprs ~f ~init { code_items; decl_ctx = _ } =
Scope.fold_right ~f:(fun e _ acc -> f e acc) ~init code_items
let empty_ctx =
{
ctx_enums = EnumName.Map.empty;
ctx_structs = StructName.Map.empty;
ctx_struct_fields = Ident.Map.empty;
ctx_scopes = ScopeName.Map.empty;
ctx_modules = Qident.Map.empty;
}
let get_scope_body { code_items; _ } scope =
match
Scope.fold_left ~init:None
~f:(fun acc item _ ->
match item with
| ScopeDef (name, body) when ScopeName.equal scope name -> Some body
| _ -> acc)
code_items
with
| None -> raise Not_found
| Some body -> body
let untype : 'm. ('a, 'm) gexpr program -> ('a, untyped) gexpr program =
fun prg -> Bindlib.unbox (map_exprs ~f:Expr.untype ~varf:Var.translate prg)
let rec find_scope name vars = function
| Nil -> raise Not_found
| Cons (ScopeDef (n, body), _) when ScopeName.equal name n ->
List.rev vars, body
| Cons (_, next_bind) ->
let var, next = Bindlib.unbind next_bind in
find_scope name (var :: vars) next
let rec all_scopes code_item_list =
match code_item_list with
| Nil -> []
| Cons (ScopeDef (n, _), next_bind) ->
let _var, next = Bindlib.unbind next_bind in
n :: all_scopes next
| Cons (_, next_bind) ->
let _var, next = Bindlib.unbind next_bind in
all_scopes next
let to_expr p main_scope =
let _, main_scope_body = find_scope main_scope [] p.code_items in
let res =
Scope.unfold p.decl_ctx p.code_items
(Scope.get_body_mark main_scope_body)
(ScopeName main_scope)
in
Expr.Box.assert_closed (Expr.Box.lift res);
res
let equal p p' =
(* TODO: include toplevel definitions in this program comparison. *)
let ss = all_scopes p.code_items in
let ss' = all_scopes p'.code_items in
List.length ss = List.length ss'
&& ListLabels.for_all2 ss ss' ~f:(fun s s' ->
ScopeName.equal s s'
&&
let e1 = Expr.unbox @@ to_expr p s in
let e2 = Expr.unbox @@ to_expr p' s in
Expr.equal e1 e2)