(** Functions to load CFIM ASTs from json. Initially, we used `ppx_derive_yojson` to automate this. However, `ppx_derive_yojson` expects formatting to be slightly different from what `serde_rs` generates (because it uses [Yojson.Safe.t] and not [Yojson.Basic.t]). TODO: we should check that the integer values are in the proper range *) open Yojson.Basic open Identifiers open Types open OfJsonBasic open Scalars let name_of_json (js : json) : (name, string) result = combine_error_msgs js "name_of_json" (list_of_json string_of_json js) let type_var_of_json (js : json) : (type_var, string) result = combine_error_msgs js "type_var_of_json" (match js with | `Assoc [ ("index", index); ("name", name) ] -> let* index = TypeVarId.id_of_json index in let* name = string_of_json name in Ok { tv_index = index; tv_name = name } | _ -> Error "") let region_var_of_json (js : json) : (region_var, string) result = combine_error_msgs js "region_var_of_json" (match js with | `Assoc [ ("index", index); ("name", name) ] -> let* index = RegionVarId.id_of_json index in let* name = string_option_of_json name in Ok { rv_index = index; rv_name = name } | _ -> Error "") let region_of_json (js : json) : (RegionVarId.id region, string) result = combine_error_msgs js "region_of_json" (match js with | `String "Static" -> Ok Static | `Assoc [ ("Var", rid) ] -> let* rid = RegionVarId.id_of_json rid in Ok (Var rid) | _ -> Error "") let erased_region_of_json (js : json) : (erased_region, string) result = combine_error_msgs js "erased_region_of_json" (match js with `String "Erased" -> Ok Erased | _ -> Error "") let integer_type_of_json (js : json) : (integer_type, string) result = match js with | `String "Isize" -> Ok Isize | `String "I8" -> Ok I8 | `String "I16" -> Ok I16 | `String "I32" -> Ok I32 | `String "I64" -> Ok I64 | `String "I128" -> Ok I128 | `String "Usize" -> Ok Usize | `String "U8" -> Ok U8 | `String "U16" -> Ok U16 | `String "U32" -> Ok U32 | `String "U64" -> Ok U64 | `String "U128" -> Ok U128 | _ -> Error ("integer_type_of_json failed on: " ^ show js) let ref_kind_of_json (js : json) : (ref_kind, string) result = match js with | `String "Mut" -> Ok Mut | `String "Shared" -> Ok Shared | _ -> Error ("ref_kind_of_json failed on: " ^ show js) let assumed_ty_of_json (js : json) : (assumed_ty, string) result = combine_error_msgs js "assumed_ty_of_json" (match js with `String "Box" -> Ok Box | _ -> Error "") let rec ty_of_json (r_of_json : json -> ('r, string) result) (js : json) : ('r ty, string) result = combine_error_msgs js "ty_of_json" (match js with | `Assoc [ ("Adt", `List [ id; regions; types ]) ] -> let* id = TypeDefId.id_of_json id in let* regions = list_of_json r_of_json regions in let* types = list_of_json (ty_of_json r_of_json) types in Ok (Adt (id, regions, types)) | `Assoc [ ("TypeVar", `List [ id ]) ] -> let* id = TypeVarId.id_of_json id in Ok (TypeVar id) | `String "Bool" -> Ok Bool | `String "Char" -> Ok Char | `String "`Never" -> Ok Never | `Assoc [ ("Integer", `List [ int_ty ]) ] -> let* int_ty = integer_type_of_json int_ty in Ok (Integer int_ty) | `String "Str" -> Ok Str | `Assoc [ ("Array", `List [ ty ]) ] -> let* ty = ty_of_json r_of_json ty in Ok (Array ty) | `Assoc [ ("Slice", `List [ ty ]) ] -> let* ty = ty_of_json r_of_json ty in Ok (Slice ty) | `Assoc [ ("Ref", `List [ region; ty; ref_kind ]) ] -> let* region = r_of_json region in let* ty = ty_of_json r_of_json ty in let* ref_kind = ref_kind_of_json ref_kind in Ok (Ref (region, ty, ref_kind)) | `Assoc [ ("Tuple", `List [ types ]) ] -> let* types = list_of_json (ty_of_json r_of_json) types in Ok (Tuple types) | `Assoc [ ("Assumed", `List [ assumed_ty; regions; types ]) ] -> let* assumed_ty = assumed_ty_of_json assumed_ty in let* regions = list_of_json r_of_json regions in let* types = list_of_json (ty_of_json r_of_json) types in Ok (Assumed (assumed_ty, regions, types)) | _ -> Error "") let rty_of_json (js : json) : (rty, string) result = combine_error_msgs js "rty_of_json" (ty_of_json region_of_json js) let ety_of_json (js : json) : (ety, string) result = combine_error_msgs js "ety_of_json" (ty_of_json erased_region_of_json js) let field_of_json (js : json) : (field, string) result = combine_error_msgs js "field_of_json" (match js with | `Assoc [ ("name", name); ("ty", ty) ] -> let* name = string_of_json name in let* ty = rty_of_json ty in Ok { field_name = name; field_ty = ty } | _ -> Error "") let variant_of_json (js : json) : (variant, string) result = combine_error_msgs js "variant_of_json" (match js with | `Assoc [ ("name", name); ("fields", fields) ] -> let* name = string_of_json name in let* fields = FieldId.vector_of_json field_of_json fields in Ok { variant_name = name; fields } | _ -> Error "") let type_def_kind_of_json (js : json) : (type_def_kind, string) result = combine_error_msgs js "type_def_kind_of_json" (match js with | `Assoc [ ("Struct", fields) ] -> let* fields = FieldId.vector_of_json field_of_json fields in Ok (Struct fields) | `Assoc [ ("Enum", variants) ] -> let* variants = VariantId.vector_of_json variant_of_json variants in Ok (Enum variants) | _ -> Error "") let type_def_of_json (js : json) : (type_def, string) result = combine_error_msgs js "type_def_of_json" (match js with | `Assoc [ ("def_id", def_id); ("name", name); ("region_params", region_params); ("type_params", type_params); ("kind", kind); ] -> let* def_id = TypeDefId.id_of_json def_id in let* name = name_of_json name in let* region_params = RegionVarId.vector_of_json region_var_of_json region_params in let* type_params = TypeVarId.vector_of_json type_var_of_json type_params in let* kind = type_def_kind_of_json kind in Ok { def_id; name; region_params; type_params; kind } | _ -> Error "") open Values let var_of_json (js : json) : (var, string) result = combine_error_msgs js "var_of_json" (match js with | `Assoc [ ("index", index); ("name", name); ("ty", ty) ] -> let* index = VarId.id_of_json index in let* name = string_option_of_json name in let* var_ty = ety_of_json ty in Ok { index; name; var_ty } | _ -> Error "") let big_int_of_json (js : json) : (big_int, string) result = combine_error_msgs js "big_int_of_json" (match js with | `Int i -> Ok (Z.of_int i) | `String is -> Ok (Z.of_string is) | _ -> Error "") (** Deserialize a [scalar_value] from JSON and **check the ranges**. Note that in practice we also check that the values are in range in the interpreter functions. Still, it doesn't cost much to be a bit conservative. *) let scalar_value_of_json (js : json) : (scalar_value, string) result = let res = combine_error_msgs js "scalar_value_of_json" (match js with | `Assoc [ ("Isize", bi) ] -> let* bi = big_int_of_json bi in Ok { value = bi; int_ty = Isize } | `Assoc [ ("I8", bi) ] -> let* bi = big_int_of_json bi in Ok { value = bi; int_ty = I8 } | `Assoc [ ("I16", bi) ] -> let* bi = big_int_of_json bi in Ok { value = bi; int_ty = I16 } | `Assoc [ ("I32", bi) ] -> let* bi = big_int_of_json bi in Ok { value = bi; int_ty = I32 } | `Assoc [ ("I64", bi) ] -> let* bi = big_int_of_json bi in Ok { value = bi; int_ty = I64 } | `Assoc [ ("I128", bi) ] -> let* bi = big_int_of_json bi in Ok { value = bi; int_ty = I128 } | `Assoc [ ("Usize", bi) ] -> let* bi = big_int_of_json bi in Ok { value = bi; int_ty = Usize } | `Assoc [ ("U8", bi) ] -> let* bi = big_int_of_json bi in Ok { value = bi; int_ty = U8 } | `Assoc [ ("U16", bi) ] -> let* bi = big_int_of_json bi in Ok { value = bi; int_ty = U16 } | `Assoc [ ("U32", bi) ] -> let* bi = big_int_of_json bi in Ok { value = bi; int_ty = U32 } | `Assoc [ ("U64", bi) ] -> let* bi = big_int_of_json bi in Ok { value = bi; int_ty = U64 } | `Assoc [ ("U128", bi) ] -> let* bi = big_int_of_json bi in Ok { value = bi; int_ty = U128 } | _ -> Error "") in match res with | Error _ -> res | Ok sv -> assert (check_scalar_value_in_range sv); res let constant_value_of_json (js : json) : (constant_value, string) result = combine_error_msgs js "constant_value_of_json" (match js with | `Assoc [ ("Scalar", scalar_value) ] -> let* scalar_value = scalar_value_of_json scalar_value in Ok (Scalar scalar_value) | `Assoc [ ("Bool", v) ] -> let* v = bool_of_json v in Ok (Bool v) | `Assoc [ ("Char", v) ] -> let* v = char_of_json v in Ok (Char v) | `Assoc [ ("String", v) ] -> let* v = string_of_json v in Ok (String v) | _ -> Error "") open Expressions let field_proj_kind_of_json (js : json) : (field_proj_kind, string) result = combine_error_msgs js "field_proj_kind_of_json" (match js with | `Assoc [ ("ProjAdt", `List [ def_id; opt_variant_id ]) ] -> let* def_id = TypeDefId.id_of_json def_id in let* opt_variant_id = option_of_json VariantId.id_of_json opt_variant_id in Ok (ProjAdt (def_id, opt_variant_id)) | `Assoc [ ("ProjTuple", i) ] -> let* i = int_of_json i in Ok (ProjTuple i) | _ -> Error "") let projection_elem_of_json (js : json) : (projection_elem, string) result = combine_error_msgs js "projection_elem_of_json" (match js with | `String "Deref" -> Ok Deref | `String "DerefBox" -> Ok DerefBox | `Assoc [ ("Field", `List [ proj_kind; field_id ]) ] -> let* proj_kind = field_proj_kind_of_json proj_kind in let* field_id = FieldId.id_of_json field_id in Ok (Field (proj_kind, field_id)) | _ -> Error ("projection_elem_of_json failed on:" ^ show js)) let projection_of_json (js : json) : (projection, string) result = combine_error_msgs js "projection_of_json" (list_of_json projection_elem_of_json js) let place_of_json (js : json) : (place, string) result = combine_error_msgs js "place_of_json" (match js with | `Assoc [ ("var_id", var_id); ("projection", projection) ] -> let* var_id = VarId.id_of_json var_id in let* projection = projection_of_json projection in Ok { var_id; projection } | _ -> Error "") let borrow_kind_of_json (js : json) : (borrow_kind, string) result = match js with | `String "Shared" -> Ok Shared | `String "Mut" -> Ok Mut | `String "TwoPhaseMut" -> Ok TwoPhaseMut | _ -> Error ("borrow_kind_of_json failed on:" ^ show js) let unop_of_json (js : json) : (unop, string) result = match js with | `String "Not" -> Ok Not | `String "Neg" -> Ok Neg | _ -> Error ("unop_of_json failed on:" ^ show js) let binop_of_json (js : json) : (binop, string) result = match js with | `String "BitXor" -> Ok BitXor | `String "BitAnd" -> Ok BitAnd | `String "BitOr" -> Ok BitOr | `String "Eq" -> Ok Eq | `String "Lt" -> Ok Lt | `String "Le" -> Ok Le | `String "Ne" -> Ok Ne | `String "Ge" -> Ok Ge | `String "Gt" -> Ok Gt | `String "Div" -> Ok Div | `String "Rem" -> Ok Rem | `String "Add" -> Ok Add | `String "Sub" -> Ok Sub | `String "Mul" -> Ok Mul | `String "Shl" -> Ok Shl | `String "Shr" -> Ok Shr | _ -> Error ("binop_of_json failed on:" ^ show js) let operand_constant_value_of_json (js : json) : (operand_constant_value, string) result = combine_error_msgs js "operand_constant_value_of_json" (match js with | `Assoc [ ("ConstantValue", cv) ] -> let* cv = constant_value_of_json cv in Ok (ConstantValue cv) | `Assoc [ ("ConstantAdt", id) ] -> let* id = TypeDefId.id_of_json id in Ok (ConstantAdt id) | `String "Unit" -> Ok Unit | _ -> Error "") let operand_of_json (js : json) : (operand, string) result = combine_error_msgs js "operand_of_json" (match js with | `Assoc [ ("Copy", place) ] -> let* place = place_of_json place in Ok (Copy place) | `Assoc [ ("Move", place) ] -> let* place = place_of_json place in Ok (Move place) | `Assoc [ ("Constant", `List [ ty; cv ]) ] -> let* ty = ety_of_json ty in let* cv = operand_constant_value_of_json cv in Ok (Constant (ty, cv)) | _ -> Error "") let aggregate_kind_of_json (js : json) : (aggregate_kind, string) result = combine_error_msgs js "operand_kind_of_json" (match js with | `String "AggregatedTuple" -> Ok AggregatedTuple | `Assoc [ ("AggregatedAdt", `List [ id; opt_variant_id; regions; tys ]) ] -> let* id = TypeDefId.id_of_json id in let* opt_variant_id = option_of_json VariantId.id_of_json opt_variant_id in let* regions = list_of_json erased_region_of_json regions in let* tys = list_of_json ety_of_json tys in Ok (AggregatedAdt (id, opt_variant_id, regions, tys)) | _ -> Error "") let rvalue_of_json (js : json) : (rvalue, string) result = combine_error_msgs js "rvalue_of_json" (match js with | `Assoc [ ("Use", op) ] -> let* op = operand_of_json op in Ok (Use op) | `Assoc [ ("Ref", `List [ place; borrow_kind ]) ] -> let* place = place_of_json place in let* borrow_kind = borrow_kind_of_json borrow_kind in Ok (Ref (place, borrow_kind)) | `Assoc [ ("UnaryOp", `List [ unop; op ]) ] -> let* unop = unop_of_json unop in let* op = operand_of_json op in Ok (UnaryOp (unop, op)) | `Assoc [ ("BinaryOp", `List [ binop; op1; op2 ]) ] -> let* binop = binop_of_json binop in let* op1 = operand_of_json op1 in let* op2 = operand_of_json op2 in Ok (BinaryOp (binop, op1, op2)) | `Assoc [ ("Discriminant", place) ] -> let* place = place_of_json place in Ok (Discriminant place) | `Assoc [ ("Aggregate", `List [ aggregate_kind; ops ]) ] -> let* aggregate_kind = aggregate_kind_of_json aggregate_kind in let* ops = list_of_json operand_of_json ops in Ok (Aggregate (aggregate_kind, ops)) | _ -> Error "") open CfimAst let assumed_fun_id_of_json (js : json) : (assumed_fun_id, string) result = match js with | `String "BoxNew" -> Ok BoxNew | `String "BoxDeref" -> Ok BoxDeref | `String "BoxDerefMut" -> Ok BoxDerefMut | `String "BoxFree" -> Ok BoxFree | _ -> Error ("assumed_fun_id_of_json failed on:" ^ show js) let fun_id_of_json (js : json) : (fun_id, string) result = combine_error_msgs js "fun_id_of_json" (match js with | `Assoc [ ("Local", id) ] -> let* id = FunDefId.id_of_json id in Ok (Local id) | `Assoc [ ("Assumed", fid) ] -> let* fid = assumed_fun_id_of_json fid in Ok (Assumed fid) | _ -> Error "") let assertion_of_json (js : json) : (assertion, string) result = combine_error_msgs js "assertion_of_json" (match js with | `Assoc [ ("cond", cond); ("expected", expected) ] -> let* cond = operand_of_json cond in let* expected = bool_of_json expected in Ok { cond; expected } | _ -> Error "") let fun_sig_of_json (js : json) : (fun_sig, string) result = combine_error_msgs js "fun_sig_of_json" (match js with | `Assoc [ ("region_params", region_params); ("num_early_bound_regions", num_early_bound_regions); ("type_params", type_params); ("inputs", inputs); ("output", output); ] -> let* region_params = RegionVarId.vector_of_json region_var_of_json region_params in let* num_early_bound_regions = int_of_json num_early_bound_regions in let* type_params = TypeVarId.vector_of_json type_var_of_json type_params in let* inputs = VarId.vector_of_json rty_of_json inputs in let* output = rty_of_json output in Ok { region_params; num_early_bound_regions; type_params; inputs; output; } | _ -> Error "") let call_of_json (js : json) : (call, string) result = combine_error_msgs js "call_of_json" (match js with | `Assoc [ ("func", func); ("region_params", region_params); ("type_params", type_params); ("args", args); ("dest", dest); ] -> let* func = fun_id_of_json func in let* region_params = list_of_json erased_region_of_json region_params in let* type_params = list_of_json ety_of_json type_params in let* args = list_of_json operand_of_json args in let* dest = place_of_json dest in Ok { func; region_params; type_params; args; dest } | _ -> Error "") let statement_of_json (js : json) : (statement, string) result = combine_error_msgs js "statement_of_json" (match js with | `Assoc [ ("Assign", `List [ place; rvalue ]) ] -> let* place = place_of_json place in let* rvalue = rvalue_of_json rvalue in Ok (Assign (place, rvalue)) | `Assoc [ ("FakeRead", place) ] -> let* place = place_of_json place in Ok (FakeRead place) | `Assoc [ ("SetDiscriminant", `List [ place; variant_id ]) ] -> let* place = place_of_json place in let* variant_id = VariantId.id_of_json variant_id in Ok (SetDiscriminant (place, variant_id)) | `Assoc [ ("Drop", place) ] -> let* place = place_of_json place in Ok (Drop place) | `Assoc [ ("Assert", assertion) ] -> let* assertion = assertion_of_json assertion in Ok (Assert assertion) | `Assoc [ ("Call", call) ] -> let* call = call_of_json call in Ok (Call call) | `String "Panic" -> Ok Panic | `String "Return" -> Ok Return | `Assoc [ ("Break", i) ] -> let* i = int_of_json i in Ok (Break i) | `Assoc [ ("Continue", i) ] -> let* i = int_of_json i in Ok (Continue i) | `String "Nop" -> Ok Nop | _ -> Error "") let rec expression_of_json (js : json) : (expression, string) result = combine_error_msgs js "expression_of_json" (match js with | `Assoc [ ("Statement", statement) ] -> let* statement = statement_of_json statement in Ok (Statement statement) | `Assoc [ ("Sequence", `List [ e1; e2 ]) ] -> let* e1 = expression_of_json e1 in let* e2 = expression_of_json e2 in Ok (Sequence (e1, e2)) | `Assoc [ ("Switch", `List [ op; tgt ]) ] -> let* op = operand_of_json op in let* tgt = switch_targets_of_json tgt in Ok (Switch (op, tgt)) | `Assoc [ ("Loop", e) ] -> let* e = expression_of_json e in Ok (Loop e) | _ -> Error "") and switch_targets_of_json (js : json) : (switch_targets, string) result = combine_error_msgs js "switch_targets_of_json" (match js with | `Assoc [ ("If", `List [ e1; e2 ]) ] -> let* e1 = expression_of_json e1 in let* e2 = expression_of_json e2 in Ok (If (e1, e2)) | `Assoc [ ("SwitchInt", `List [ int_ty; tgts; otherwise ]) ] -> let* int_ty = integer_type_of_json int_ty in let* tgts = list_of_json (pair_of_json scalar_value_of_json expression_of_json) tgts in let* otherwise = expression_of_json otherwise in Ok (SwitchInt (int_ty, tgts, otherwise)) | _ -> Error "") let fun_def_of_json (js : json) : (fun_def, string) result = combine_error_msgs js "fun_def_of_json" (match js with | `Assoc [ ("def_id", def_id); ("name", name); ("signature", signature); ("divergent", divergent); ("arg_count", arg_count); ("locals", locals); ("body", body); ] -> let* def_id = FunDefId.id_of_json def_id in let* name = name_of_json name in let* signature = fun_sig_of_json signature in let* divergent = bool_of_json divergent in let* arg_count = int_of_json arg_count in let* locals = VarId.vector_of_json var_of_json locals in let* body = expression_of_json body in Ok { def_id; name; signature; divergent; arg_count; locals; body } | _ -> Error "") (** Module declaration *) type declaration = | Type of TypeDefId.id | Fun of FunDefId.id | RecTypes of TypeDefId.id list | RecFuns of FunDefId.id list type cfim_module = { declarations : declaration list; types : type_def TypeDefId.vector; functions : fun_def FunDefId.vector; } (** CFIM module *) let declaration_of_json (js : json) : (declaration, string) result = combine_error_msgs js "declaration_of_json" (match js with | `Assoc [ ("Type", id) ] -> let* id = TypeDefId.id_of_json id in Ok (Type id) | `Assoc [ ("Fun", id) ] -> let* id = FunDefId.id_of_json id in Ok (Fun id) | `Assoc [ ("RecTypes", ids) ] -> let* ids = list_of_json TypeDefId.id_of_json ids in Ok (RecTypes ids) | `Assoc [ ("RecFuns", ids) ] -> let* ids = list_of_json FunDefId.id_of_json ids in Ok (RecFuns ids) | _ -> Error "") let cfim_module_of_json (js : json) : (cfim_module, string) result = combine_error_msgs js "cfim_module_of_json" (match js with | `Assoc [ ("declarations", declarations); ("types", types); ("functions", functions); ] -> let* declarations = list_of_json declaration_of_json declarations in let* types = TypeDefId.vector_of_json type_def_of_json types in let* functions = FunDefId.vector_of_json fun_def_of_json functions in Ok { declarations; types; functions } | _ -> Error "")