1 files changed, 86 insertions, 0 deletions
diff --git a/src/InterpreterUtils.ml b/src/InterpreterUtils.ml
new file mode 100644
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+++ b/src/InterpreterUtils.ml
@@ -0,0 +1,86 @@
+module T = Types
+module V = Values
+open Scalars
+module E = Expressions
+open Errors
+module C = Contexts
+module Subst = Substitute
+module A = CfimAst
+module L = Logging
+open TypesUtils
+open ValuesUtils
+
+(** Some utilities *)
+
+let eval_ctx_to_string = Print.Contexts.eval_ctx_to_string
+
+let ety_to_string = Print.EvalCtxCfimAst.ety_to_string
+
+let typed_value_to_string = Print.EvalCtxCfimAst.typed_value_to_string
+
+let place_to_string = Print.EvalCtxCfimAst.place_to_string
+
+let operand_to_string = Print.EvalCtxCfimAst.operand_to_string
+
+let statement_to_string ctx =
+  Print.EvalCtxCfimAst.statement_to_string ctx "" "  "
+
+let same_symbolic_id (sv0 : V.symbolic_value) (sv1 : V.symbolic_value) : bool =
+  sv0.V.sv_id = sv1.V.sv_id
+
+(* TODO: move *)
+let mk_var (index : V.VarId.id) (name : string option) (var_ty : T.ety) : A.var
+    =
+  { A.index; name; var_ty }
+
+(** Small helper *)
+let mk_place_from_var_id (var_id : V.VarId.id) : E.place =
+  { var_id; projection = [] }
+
+(** Deconstruct a type of the form `Box<T>` to retrieve the `T` inside *)
+let ty_get_box (box_ty : T.ety) : T.ety =
+  match box_ty with
+  | T.Adt (T.Assumed T.Box, [], [ boxed_ty ]) -> boxed_ty
+  | _ -> failwith "Not a boxed type"
+
+(** Deconstruct a type of the form `&T` or `&mut T` to retrieve the `T` (and
+    the borrow kind, etc.)
+ *)
+let ty_get_ref (ty : T.ety) : T.erased_region * T.ety * T.ref_kind =
+  match ty with
+  | T.Ref (r, ty, ref_kind) -> (r, ty, ref_kind)
+  | _ -> failwith "Not a ref type"
+
+(** Box a value *)
+let mk_box_value (v : V.typed_value) : V.typed_value =
+  let box_ty = T.Adt (T.Assumed T.Box, [], [ v.V.ty ]) in
+  let box_v = V.Adt { variant_id = None; field_values = [ v ] } in
+  mk_typed_value box_ty box_v
+
+(** Create a fresh symbolic proj comp *)
+let mk_fresh_symbolic_proj_comp (ended_regions : T.RegionId.set_t) (ty : T.rty)
+    (ctx : C.eval_ctx) : C.eval_ctx * V.symbolic_proj_comp =
+  let ctx, sv_id = C.fresh_symbolic_value_id ctx in
+  let svalue = { V.sv_id; V.sv_ty = ty } in
+  let sv = { V.svalue; rset_ended = ended_regions } in
+  (ctx, sv)
+
+(** Create a fresh symbolic value (as a complementary projector) *)
+let mk_fresh_symbolic_proj_comp_value (ended_regions : T.RegionId.set_t)
+    (ty : T.rty) (ctx : C.eval_ctx) : C.eval_ctx * V.typed_value =
+  let ctx, sv = mk_fresh_symbolic_proj_comp ended_regions ty ctx in
+  let value : V.value = V.Symbolic sv in
+  let ty : T.ety = Subst.erase_regions ty in
+  let sv : V.typed_value = { V.value; ty } in
+  (ctx, sv)
+
+let mk_typed_value_from_proj_comp (sv : V.symbolic_proj_comp) : V.typed_value =
+  let ty = Subst.erase_regions sv.V.svalue.V.sv_ty in
+  let value = V.Symbolic sv in
+  { V.value; ty }
+
+let mk_aproj_loans_from_proj_comp (sv : V.symbolic_proj_comp) : V.typed_avalue =
+  let ty = sv.V.svalue.V.sv_ty in
+  let proj = V.AProjLoans sv.V.svalue in
+  let value = V.ASymbolic proj in
+  { V.value; ty }