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Diffstat (limited to 'compiler/LlbcOfJson.ml')
| -rw-r--r-- | compiler/LlbcOfJson.ml | 915 |
1 files changed, 915 insertions, 0 deletions
diff --git a/compiler/LlbcOfJson.ml b/compiler/LlbcOfJson.ml new file mode 100644 index 00000000..79c9b756 --- /dev/null +++ b/compiler/LlbcOfJson.ml @@ -0,0 +1,915 @@ +(** Functions to load LLBC 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 all that the integer values are in the proper range + *) + +open Yojson.Basic +open Names +open OfJsonBasic +open Identifiers +open Meta +module T = Types +module V = Values +module S = Scalars +module E = Expressions +module A = LlbcAst +module TU = TypesUtils +module AU = LlbcAstUtils +module LocalFileId = IdGen () +module VirtualFileId = IdGen () + +(** The default logger *) +let log = Logging.llbc_of_json_logger + +(** A file identifier *) +type file_id = LocalId of LocalFileId.id | VirtualId of VirtualFileId.id +[@@deriving show, ord] + +module OrderedIdToFile : Collections.OrderedType with type t = file_id = struct + type t = file_id + + let compare fid0 fid1 = compare_file_id fid0 fid1 + + let to_string id = + match id with + | LocalId id -> "Local " ^ LocalFileId.to_string id + | VirtualId id -> "Virtual " ^ VirtualFileId.to_string id + + let pp_t fmt x = Format.pp_print_string fmt (to_string x) + let show_t x = to_string x +end + +module IdToFile = Collections.MakeMap (OrderedIdToFile) + +type id_to_file_map = file_name IdToFile.t + +let file_id_of_json (js : json) : (file_id, string) result = + combine_error_msgs js __FUNCTION__ + (match js with + | `Assoc [ ("LocalId", id) ] -> + let* id = LocalFileId.id_of_json id in + Ok (LocalId id) + | `Assoc [ ("VirtualId", id) ] -> + let* id = VirtualFileId.id_of_json id in + Ok (VirtualId id) + | _ -> Error "") + +let file_name_of_json (js : json) : (file_name, string) result = + combine_error_msgs js __FUNCTION__ + (match js with + | `Assoc [ ("Virtual", name) ] -> + let* name = string_of_json name in + Ok (Virtual name) + | `Assoc [ ("Local", name) ] -> + let* name = string_of_json name in + Ok (Local name) + | _ -> Error "") + +(** Deserialize a map from file id to file name. + + In the serialized LLBC, the files in the loc spans are refered to by their + ids, in order to save space. In a functional language like OCaml this is + not necessary: we thus replace the file ids by the file name themselves in + the AST. + The "id to file" map is thus only used in the deserialization process. + *) +let id_to_file_of_json (js : json) : (id_to_file_map, string) result = + combine_error_msgs js __FUNCTION__ + ((* The map is stored as a list of pairs (key, value): we deserialize + * this list then convert it to a map *) + let* key_values = + list_of_json (pair_of_json file_id_of_json file_name_of_json) js + in + Ok (IdToFile.of_list key_values)) + +let loc_of_json (js : json) : (loc, string) result = + combine_error_msgs js __FUNCTION__ + (match js with + | `Assoc [ ("line", line); ("col", col) ] -> + let* line = int_of_json line in + let* col = int_of_json col in + Ok { line; col } + | _ -> Error "") + +let span_of_json (id_to_file : id_to_file_map) (js : json) : + (span, string) result = + combine_error_msgs js __FUNCTION__ + (match js with + | `Assoc [ ("file_id", file_id); ("beg", beg_loc); ("end", end_loc) ] -> + let* file_id = file_id_of_json file_id in + let file = IdToFile.find file_id id_to_file in + let* beg_loc = loc_of_json beg_loc in + let* end_loc = loc_of_json end_loc in + Ok { file; beg_loc; end_loc } + | _ -> Error "") + +let meta_of_json (id_to_file : id_to_file_map) (js : json) : + (meta, string) result = + combine_error_msgs js __FUNCTION__ + (match js with + | `Assoc [ ("span", span); ("generated_from_span", generated_from_span) ] -> + let* span = span_of_json id_to_file span in + let* generated_from_span = + option_of_json (span_of_json id_to_file) generated_from_span + in + Ok { span; generated_from_span } + | _ -> Error "") + +let path_elem_of_json (js : json) : (path_elem, string) result = + combine_error_msgs js __FUNCTION__ + (match js with + | `Assoc [ ("Ident", name) ] -> + let* name = string_of_json name in + Ok (Ident name) + | `Assoc [ ("Disambiguator", d) ] -> + let* d = Disambiguator.id_of_json d in + Ok (Disambiguator d) + | _ -> Error "") + +let name_of_json (js : json) : (name, string) result = + combine_error_msgs js __FUNCTION__ (list_of_json path_elem_of_json js) + +let fun_name_of_json (js : json) : (fun_name, string) result = + combine_error_msgs js __FUNCTION__ (name_of_json js) + +let type_var_of_json (js : json) : (T.type_var, string) result = + combine_error_msgs js __FUNCTION__ + (match js with + | `Assoc [ ("index", index); ("name", name) ] -> + let* index = T.TypeVarId.id_of_json index in + let* name = string_of_json name in + Ok { T.index; name } + | _ -> Error "") + +let region_var_of_json (js : json) : (T.region_var, string) result = + combine_error_msgs js __FUNCTION__ + (match js with + | `Assoc [ ("index", index); ("name", name) ] -> + let* index = T.RegionVarId.id_of_json index in + let* name = string_option_of_json name in + Ok { T.index; name } + | _ -> Error "") + +let region_of_json (js : json) : (T.RegionVarId.id T.region, string) result = + combine_error_msgs js __FUNCTION__ + (match js with + | `String "Static" -> Ok T.Static + | `Assoc [ ("Var", rid) ] -> + let* rid = T.RegionVarId.id_of_json rid in + Ok (T.Var rid) + | _ -> Error "") + +let erased_region_of_json (js : json) : (T.erased_region, string) result = + combine_error_msgs js __FUNCTION__ + (match js with `String "Erased" -> Ok T.Erased | _ -> Error "") + +let integer_type_of_json (js : json) : (T.integer_type, string) result = + match js with + | `String "Isize" -> Ok T.Isize + | `String "I8" -> Ok T.I8 + | `String "I16" -> Ok T.I16 + | `String "I32" -> Ok T.I32 + | `String "I64" -> Ok T.I64 + | `String "I128" -> Ok T.I128 + | `String "Usize" -> Ok T.Usize + | `String "U8" -> Ok T.U8 + | `String "U16" -> Ok T.U16 + | `String "U32" -> Ok T.U32 + | `String "U64" -> Ok T.U64 + | `String "U128" -> Ok T.U128 + | _ -> Error ("integer_type_of_json failed on: " ^ show js) + +let ref_kind_of_json (js : json) : (T.ref_kind, string) result = + match js with + | `String "Mut" -> Ok T.Mut + | `String "Shared" -> Ok T.Shared + | _ -> Error ("ref_kind_of_json failed on: " ^ show js) + +let assumed_ty_of_json (js : json) : (T.assumed_ty, string) result = + combine_error_msgs js __FUNCTION__ + (match js with + | `String "Box" -> Ok T.Box + | `String "Vec" -> Ok T.Vec + | `String "Option" -> Ok T.Option + | _ -> Error "") + +let type_id_of_json (js : json) : (T.type_id, string) result = + combine_error_msgs js __FUNCTION__ + (match js with + | `Assoc [ ("Adt", id) ] -> + let* id = T.TypeDeclId.id_of_json id in + Ok (T.AdtId id) + | `String "Tuple" -> Ok T.Tuple + | `Assoc [ ("Assumed", aty) ] -> + let* aty = assumed_ty_of_json aty in + Ok (T.Assumed aty) + | _ -> Error "") + +let rec ty_of_json (r_of_json : json -> ('r, string) result) (js : json) : + ('r T.ty, string) result = + combine_error_msgs js __FUNCTION__ + (match js with + | `Assoc [ ("Adt", `List [ id; regions; types ]) ] -> + let* id = type_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 + (* Sanity check *) + (match id with T.Tuple -> assert (List.length regions = 0) | _ -> ()); + Ok (T.Adt (id, regions, types)) + | `Assoc [ ("TypeVar", `List [ id ]) ] -> + let* id = T.TypeVarId.id_of_json id in + Ok (T.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 (T.Integer int_ty) + | `String "Str" -> Ok Str + | `Assoc [ ("Array", `List [ ty ]) ] -> + let* ty = ty_of_json r_of_json ty in + Ok (T.Array ty) + | `Assoc [ ("Slice", `List [ ty ]) ] -> + let* ty = ty_of_json r_of_json ty in + Ok (T.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 (T.Ref (region, ty, ref_kind)) + | _ -> Error "") + +let sty_of_json (js : json) : (T.sty, string) result = + combine_error_msgs js __FUNCTION__ (ty_of_json region_of_json js) + +let ety_of_json (js : json) : (T.ety, string) result = + combine_error_msgs js __FUNCTION__ (ty_of_json erased_region_of_json js) + +let field_of_json (id_to_file : id_to_file_map) (js : json) : + (T.field, string) result = + combine_error_msgs js __FUNCTION__ + (match js with + | `Assoc [ ("meta", meta); ("name", name); ("ty", ty) ] -> + let* meta = meta_of_json id_to_file meta in + let* name = option_of_json string_of_json name in + let* ty = sty_of_json ty in + Ok { T.meta; field_name = name; field_ty = ty } + | _ -> Error "") + +let variant_of_json (id_to_file : id_to_file_map) (js : json) : + (T.variant, string) result = + combine_error_msgs js __FUNCTION__ + (match js with + | `Assoc [ ("meta", meta); ("name", name); ("fields", fields) ] -> + let* meta = meta_of_json id_to_file meta in + let* name = string_of_json name in + let* fields = list_of_json (field_of_json id_to_file) fields in + Ok { T.meta; variant_name = name; fields } + | _ -> Error "") + +let type_decl_kind_of_json (id_to_file : id_to_file_map) (js : json) : + (T.type_decl_kind, string) result = + combine_error_msgs js __FUNCTION__ + (match js with + | `Assoc [ ("Struct", fields) ] -> + let* fields = list_of_json (field_of_json id_to_file) fields in + Ok (T.Struct fields) + | `Assoc [ ("Enum", variants) ] -> + let* variants = list_of_json (variant_of_json id_to_file) variants in + Ok (T.Enum variants) + | `String "Opaque" -> Ok T.Opaque + | _ -> Error "") + +let region_var_group_of_json (js : json) : (T.region_var_group, string) result = + combine_error_msgs js __FUNCTION__ + (match js with + | `Assoc [ ("id", id); ("regions", regions); ("parents", parents) ] -> + let* id = T.RegionGroupId.id_of_json id in + let* regions = list_of_json T.RegionVarId.id_of_json regions in + let* parents = list_of_json T.RegionGroupId.id_of_json parents in + Ok { T.id; regions; parents } + | _ -> Error "") + +let region_var_groups_of_json (js : json) : (T.region_var_groups, string) result + = + combine_error_msgs js __FUNCTION__ (list_of_json region_var_group_of_json js) + +let type_decl_of_json (id_to_file : id_to_file_map) (js : json) : + (T.type_decl, string) result = + combine_error_msgs js __FUNCTION__ + (match js with + | `Assoc + [ + ("def_id", def_id); + ("meta", meta); + ("name", name); + ("region_params", region_params); + ("type_params", type_params); + ("regions_hierarchy", regions_hierarchy); + ("kind", kind); + ] -> + let* def_id = T.TypeDeclId.id_of_json def_id in + let* meta = meta_of_json id_to_file meta in + let* name = name_of_json name in + let* region_params = list_of_json region_var_of_json region_params in + let* type_params = list_of_json type_var_of_json type_params in + let* kind = type_decl_kind_of_json id_to_file kind in + let* regions_hierarchy = region_var_groups_of_json regions_hierarchy in + Ok + { + T.def_id; + meta; + name; + region_params; + type_params; + kind; + regions_hierarchy; + } + | _ -> Error "") + +let var_of_json (js : json) : (A.var, string) result = + combine_error_msgs js __FUNCTION__ + (match js with + | `Assoc [ ("index", index); ("name", name); ("ty", ty) ] -> + let* index = V.VarId.id_of_json index in + let* name = string_option_of_json name in + let* var_ty = ety_of_json ty in + Ok { A.index; name; var_ty } + | _ -> Error "") + +let big_int_of_json (js : json) : (V.big_int, string) result = + combine_error_msgs js __FUNCTION__ + (match js with + | `Int i -> Ok (Z.of_int i) + | `String is -> Ok (Z.of_string is) + | _ -> Error "") + +(** Deserialize a {!V.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) : (V.scalar_value, string) result = + let res = + combine_error_msgs js __FUNCTION__ + (match js with + | `Assoc [ ("Isize", `List [ bi ]) ] -> + let* bi = big_int_of_json bi in + Ok { V.value = bi; int_ty = Isize } + | `Assoc [ ("I8", `List [ bi ]) ] -> + let* bi = big_int_of_json bi in + Ok { V.value = bi; int_ty = I8 } + | `Assoc [ ("I16", `List [ bi ]) ] -> + let* bi = big_int_of_json bi in + Ok { V.value = bi; int_ty = I16 } + | `Assoc [ ("I32", `List [ bi ]) ] -> + let* bi = big_int_of_json bi in + Ok { V.value = bi; int_ty = I32 } + | `Assoc [ ("I64", `List [ bi ]) ] -> + let* bi = big_int_of_json bi in + Ok { V.value = bi; int_ty = I64 } + | `Assoc [ ("I128", `List [ bi ]) ] -> + let* bi = big_int_of_json bi in + Ok { V.value = bi; int_ty = I128 } + | `Assoc [ ("Usize", `List [ bi ]) ] -> + let* bi = big_int_of_json bi in + Ok { V.value = bi; int_ty = Usize } + | `Assoc [ ("U8", `List [ bi ]) ] -> + let* bi = big_int_of_json bi in + Ok { V.value = bi; int_ty = U8 } + | `Assoc [ ("U16", `List [ bi ]) ] -> + let* bi = big_int_of_json bi in + Ok { V.value = bi; int_ty = U16 } + | `Assoc [ ("U32", `List [ bi ]) ] -> + let* bi = big_int_of_json bi in + Ok { V.value = bi; int_ty = U32 } + | `Assoc [ ("U64", `List [ bi ]) ] -> + let* bi = big_int_of_json bi in + Ok { V.value = bi; int_ty = U64 } + | `Assoc [ ("U128", `List [ bi ]) ] -> + let* bi = big_int_of_json bi in + Ok { V.value = bi; int_ty = U128 } + | _ -> Error "") + in + match res with + | Error _ -> res + | Ok sv -> + if not (S.check_scalar_value_in_range sv) then ( + log#serror ("Scalar value not in range: " ^ V.show_scalar_value sv); + raise (Failure ("Scalar value not in range: " ^ V.show_scalar_value sv))); + res + +let field_proj_kind_of_json (js : json) : (E.field_proj_kind, string) result = + combine_error_msgs js __FUNCTION__ + (match js with + | `Assoc [ ("ProjAdt", `List [ def_id; opt_variant_id ]) ] -> + let* def_id = T.TypeDeclId.id_of_json def_id in + let* opt_variant_id = + option_of_json T.VariantId.id_of_json opt_variant_id + in + Ok (E.ProjAdt (def_id, opt_variant_id)) + | `Assoc [ ("ProjTuple", i) ] -> + let* i = int_of_json i in + Ok (E.ProjTuple i) + | `Assoc [ ("ProjOption", variant_id) ] -> + let* variant_id = T.VariantId.id_of_json variant_id in + Ok (E.ProjOption variant_id) + | _ -> Error "") + +let projection_elem_of_json (js : json) : (E.projection_elem, string) result = + combine_error_msgs js __FUNCTION__ + (match js with + | `String "Deref" -> Ok E.Deref + | `String "DerefBox" -> Ok E.DerefBox + | `Assoc [ ("Field", `List [ proj_kind; field_id ]) ] -> + let* proj_kind = field_proj_kind_of_json proj_kind in + let* field_id = T.FieldId.id_of_json field_id in + Ok (E.Field (proj_kind, field_id)) + | _ -> Error ("projection_elem_of_json failed on:" ^ show js)) + +let projection_of_json (js : json) : (E.projection, string) result = + combine_error_msgs js __FUNCTION__ (list_of_json projection_elem_of_json js) + +let place_of_json (js : json) : (E.place, string) result = + combine_error_msgs js __FUNCTION__ + (match js with + | `Assoc [ ("var_id", var_id); ("projection", projection) ] -> + let* var_id = V.VarId.id_of_json var_id in + let* projection = projection_of_json projection in + Ok { E.var_id; projection } + | _ -> Error "") + +let borrow_kind_of_json (js : json) : (E.borrow_kind, string) result = + match js with + | `String "Shared" -> Ok E.Shared + | `String "Mut" -> Ok E.Mut + | `String "TwoPhaseMut" -> Ok E.TwoPhaseMut + | _ -> Error ("borrow_kind_of_json failed on:" ^ show js) + +let unop_of_json (js : json) : (E.unop, string) result = + match js with + | `String "Not" -> Ok E.Not + | `String "Neg" -> Ok E.Neg + | `Assoc [ ("Cast", `List [ src_ty; tgt_ty ]) ] -> + let* src_ty = integer_type_of_json src_ty in + let* tgt_ty = integer_type_of_json tgt_ty in + Ok (E.Cast (src_ty, tgt_ty)) + | _ -> Error ("unop_of_json failed on:" ^ show js) + +let binop_of_json (js : json) : (E.binop, string) result = + match js with + | `String "BitXor" -> Ok E.BitXor + | `String "BitAnd" -> Ok E.BitAnd + | `String "BitOr" -> Ok E.BitOr + | `String "Eq" -> Ok E.Eq + | `String "Lt" -> Ok E.Lt + | `String "Le" -> Ok E.Le + | `String "Ne" -> Ok E.Ne + | `String "Ge" -> Ok E.Ge + | `String "Gt" -> Ok E.Gt + | `String "Div" -> Ok E.Div + | `String "Rem" -> Ok E.Rem + | `String "Add" -> Ok E.Add + | `String "Sub" -> Ok E.Sub + | `String "Mul" -> Ok E.Mul + | `String "Shl" -> Ok E.Shl + | `String "Shr" -> Ok E.Shr + | _ -> Error ("binop_of_json failed on:" ^ show js) + +let constant_value_of_json (js : json) : (V.constant_value, string) result = + combine_error_msgs js __FUNCTION__ + (match js with + | `Assoc [ ("Scalar", scalar_value) ] -> + let* scalar_value = scalar_value_of_json scalar_value in + Ok (V.Scalar scalar_value) + | `Assoc [ ("Bool", v) ] -> + let* v = bool_of_json v in + Ok (V.Bool v) + | `Assoc [ ("Char", v) ] -> + let* v = char_of_json v in + Ok (V.Char v) + | `Assoc [ ("String", v) ] -> + let* v = string_of_json v in + Ok (V.String v) + | _ -> Error "") + +let operand_of_json (js : json) : (E.operand, string) result = + combine_error_msgs js __FUNCTION__ + (match js with + | `Assoc [ ("Copy", place) ] -> + let* place = place_of_json place in + Ok (E.Copy place) + | `Assoc [ ("Move", place) ] -> + let* place = place_of_json place in + Ok (E.Move place) + | `Assoc [ ("Const", `List [ ty; cv ]) ] -> + let* ty = ety_of_json ty in + let* cv = constant_value_of_json cv in + Ok (E.Constant (ty, cv)) + | _ -> Error "") + +let aggregate_kind_of_json (js : json) : (E.aggregate_kind, string) result = + combine_error_msgs js __FUNCTION__ + (match js with + | `String "AggregatedTuple" -> Ok E.AggregatedTuple + | `Assoc [ ("AggregatedOption", `List [ variant_id; ty ]) ] -> + let* variant_id = T.VariantId.id_of_json variant_id in + let* ty = ety_of_json ty in + Ok (E.AggregatedOption (variant_id, ty)) + | `Assoc [ ("AggregatedAdt", `List [ id; opt_variant_id; regions; tys ]) ] + -> + let* id = T.TypeDeclId.id_of_json id in + let* opt_variant_id = + option_of_json T.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 (E.AggregatedAdt (id, opt_variant_id, regions, tys)) + | _ -> Error "") + +let rvalue_of_json (js : json) : (E.rvalue, string) result = + combine_error_msgs js __FUNCTION__ + (match js with + | `Assoc [ ("Use", op) ] -> + let* op = operand_of_json op in + Ok (E.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 (E.Ref (place, borrow_kind)) + | `Assoc [ ("UnaryOp", `List [ unop; op ]) ] -> + let* unop = unop_of_json unop in + let* op = operand_of_json op in + Ok (E.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 (E.BinaryOp (binop, op1, op2)) + | `Assoc [ ("Discriminant", place) ] -> + let* place = place_of_json place in + Ok (E.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 (E.Aggregate (aggregate_kind, ops)) + | _ -> Error "") + +let assumed_fun_id_of_json (js : json) : (A.assumed_fun_id, string) result = + match js with + | `String "Replace" -> Ok A.Replace + | `String "BoxNew" -> Ok A.BoxNew + | `String "BoxDeref" -> Ok A.BoxDeref + | `String "BoxDerefMut" -> Ok A.BoxDerefMut + | `String "BoxFree" -> Ok A.BoxFree + | `String "VecNew" -> Ok A.VecNew + | `String "VecPush" -> Ok A.VecPush + | `String "VecInsert" -> Ok A.VecInsert + | `String "VecLen" -> Ok A.VecLen + | `String "VecIndex" -> Ok A.VecIndex + | `String "VecIndexMut" -> Ok A.VecIndexMut + | _ -> Error ("assumed_fun_id_of_json failed on:" ^ show js) + +let fun_id_of_json (js : json) : (A.fun_id, string) result = + combine_error_msgs js __FUNCTION__ + (match js with + | `Assoc [ ("Regular", id) ] -> + let* id = A.FunDeclId.id_of_json id in + Ok (A.Regular id) + | `Assoc [ ("Assumed", fid) ] -> + let* fid = assumed_fun_id_of_json fid in + Ok (A.Assumed fid) + | _ -> Error "") + +let assertion_of_json (js : json) : (A.assertion, string) result = + combine_error_msgs js __FUNCTION__ + (match js with + | `Assoc [ ("cond", cond); ("expected", expected) ] -> + let* cond = operand_of_json cond in + let* expected = bool_of_json expected in + Ok { A.cond; expected } + | _ -> Error "") + +let fun_sig_of_json (js : json) : (A.fun_sig, string) result = + combine_error_msgs js __FUNCTION__ + (match js with + | `Assoc + [ + ("region_params", region_params); + ("num_early_bound_regions", num_early_bound_regions); + ("regions_hierarchy", regions_hierarchy); + ("type_params", type_params); + ("inputs", inputs); + ("output", output); + ] -> + let* region_params = list_of_json region_var_of_json region_params in + let* num_early_bound_regions = int_of_json num_early_bound_regions in + let* regions_hierarchy = region_var_groups_of_json regions_hierarchy in + let* type_params = list_of_json type_var_of_json type_params in + let* inputs = list_of_json sty_of_json inputs in + let* output = sty_of_json output in + Ok + { + A.region_params; + num_early_bound_regions; + regions_hierarchy; + type_params; + inputs; + output; + } + | _ -> Error "") + +let call_of_json (js : json) : (A.call, string) result = + combine_error_msgs js __FUNCTION__ + (match js with + | `Assoc + [ + ("func", func); + ("region_args", region_args); + ("type_args", type_args); + ("args", args); + ("dest", dest); + ] -> + let* func = fun_id_of_json func in + let* region_args = list_of_json erased_region_of_json region_args in + let* type_args = list_of_json ety_of_json type_args in + let* args = list_of_json operand_of_json args in + let* dest = place_of_json dest in + Ok { A.func; region_args; type_args; args; dest } + | _ -> Error "") + +let rec statement_of_json (id_to_file : id_to_file_map) (js : json) : + (A.statement, string) result = + combine_error_msgs js __FUNCTION__ + (match js with + | `Assoc [ ("meta", meta); ("content", content) ] -> + let* meta = meta_of_json id_to_file meta in + let* content = raw_statement_of_json id_to_file content in + Ok { A.meta; content } + | _ -> Error "") + +and raw_statement_of_json (id_to_file : id_to_file_map) (js : json) : + (A.raw_statement, string) result = + combine_error_msgs js __FUNCTION__ + (match js with + | `Assoc [ ("Assign", `List [ place; rvalue ]) ] -> + let* place = place_of_json place in + let* rvalue = rvalue_of_json rvalue in + Ok (A.Assign (place, rvalue)) + | `Assoc [ ("AssignGlobal", `List [ dst; global ]) ] -> + let* dst = V.VarId.id_of_json dst in + let* global = A.GlobalDeclId.id_of_json global in + Ok (A.AssignGlobal { dst; global }) + | `Assoc [ ("FakeRead", place) ] -> + let* place = place_of_json place in + Ok (A.FakeRead place) + | `Assoc [ ("SetDiscriminant", `List [ place; variant_id ]) ] -> + let* place = place_of_json place in + let* variant_id = T.VariantId.id_of_json variant_id in + Ok (A.SetDiscriminant (place, variant_id)) + | `Assoc [ ("Drop", place) ] -> + let* place = place_of_json place in + Ok (A.Drop place) + | `Assoc [ ("Assert", assertion) ] -> + let* assertion = assertion_of_json assertion in + Ok (A.Assert assertion) + | `Assoc [ ("Call", call) ] -> + let* call = call_of_json call in + Ok (A.Call call) + | `String "Panic" -> Ok A.Panic + | `String "Return" -> Ok A.Return + | `Assoc [ ("Break", i) ] -> + let* i = int_of_json i in + Ok (A.Break i) + | `Assoc [ ("Continue", i) ] -> + let* i = int_of_json i in + Ok (A.Continue i) + | `String "Nop" -> Ok A.Nop + | `Assoc [ ("Sequence", `List [ st1; st2 ]) ] -> + let* st1 = statement_of_json id_to_file st1 in + let* st2 = statement_of_json id_to_file st2 in + Ok (A.Sequence (st1, st2)) + | `Assoc [ ("Switch", `List [ op; tgt ]) ] -> + let* op = operand_of_json op in + let* tgt = switch_targets_of_json id_to_file tgt in + Ok (A.Switch (op, tgt)) + | `Assoc [ ("Loop", st) ] -> + let* st = statement_of_json id_to_file st in + Ok (A.Loop st) + | _ -> Error "") + +and switch_targets_of_json (id_to_file : id_to_file_map) (js : json) : + (A.switch_targets, string) result = + combine_error_msgs js __FUNCTION__ + (match js with + | `Assoc [ ("If", `List [ st1; st2 ]) ] -> + let* st1 = statement_of_json id_to_file st1 in + let* st2 = statement_of_json id_to_file st2 in + Ok (A.If (st1, st2)) + | `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 + (list_of_json scalar_value_of_json) + (statement_of_json id_to_file)) + tgts + in + let* otherwise = statement_of_json id_to_file otherwise in + Ok (A.SwitchInt (int_ty, tgts, otherwise)) + | _ -> Error "") + +let fun_body_of_json (id_to_file : id_to_file_map) (js : json) : + (A.fun_body, string) result = + combine_error_msgs js __FUNCTION__ + (match js with + | `Assoc + [ + ("meta", meta); + ("arg_count", arg_count); + ("locals", locals); + ("body", body); + ] -> + let* meta = meta_of_json id_to_file meta in + let* arg_count = int_of_json arg_count in + let* locals = list_of_json var_of_json locals in + let* body = statement_of_json id_to_file body in + Ok { A.meta; arg_count; locals; body } + | _ -> Error "") + +let fun_decl_of_json (id_to_file : id_to_file_map) (js : json) : + (A.fun_decl, string) result = + combine_error_msgs js __FUNCTION__ + (match js with + | `Assoc + [ + ("def_id", def_id); + ("meta", meta); + ("name", name); + ("signature", signature); + ("body", body); + ] -> + let* def_id = A.FunDeclId.id_of_json def_id in + let* meta = meta_of_json id_to_file meta in + let* name = fun_name_of_json name in + let* signature = fun_sig_of_json signature in + let* body = option_of_json (fun_body_of_json id_to_file) body in + Ok + { A.def_id; meta; name; signature; body; is_global_decl_body = false } + | _ -> Error "") + +(* Strict type for the number of function declarations (see {!global_to_fun_id} below) *) +type global_id_converter = { fun_count : int } [@@deriving show] + +(** Converts a global id to its corresponding function id. + To do so, it adds the global id to the number of function declarations : + We have the bijection [global_fun_id <=> global_id + fun_id_count]. +*) +let global_to_fun_id (conv : global_id_converter) (gid : A.GlobalDeclId.id) : + A.FunDeclId.id = + A.FunDeclId.of_int (A.GlobalDeclId.to_int gid + conv.fun_count) + +(* Converts a global declaration to a function declaration. + *) +let global_decl_of_json (id_to_file : id_to_file_map) (js : json) + (gid_conv : global_id_converter) : + (A.global_decl * A.fun_decl, string) result = + combine_error_msgs js __FUNCTION__ + (match js with + | `Assoc + [ + ("def_id", def_id); + ("meta", meta); + ("name", name); + ("ty", ty); + ("body", body); + ] -> + let* global_id = A.GlobalDeclId.id_of_json def_id in + let fun_id = global_to_fun_id gid_conv global_id in + let* meta = meta_of_json id_to_file meta in + let* name = fun_name_of_json name in + let* ty = ety_of_json ty in + let* body = option_of_json (fun_body_of_json id_to_file) body in + let signature : A.fun_sig = + { + region_params = []; + num_early_bound_regions = 0; + regions_hierarchy = []; + type_params = []; + inputs = []; + output = TU.ety_no_regions_to_sty ty; + } + in + Ok + ( { A.def_id = global_id; meta; body_id = fun_id; name; ty }, + { + A.def_id = fun_id; + meta; + name; + signature; + body; + is_global_decl_body = true; + } ) + | _ -> Error "") + +let g_declaration_group_of_json (id_of_json : json -> ('id, string) result) + (js : json) : ('id Crates.g_declaration_group, string) result = + combine_error_msgs js __FUNCTION__ + (match js with + | `Assoc [ ("NonRec", `List [ id ]) ] -> + let* id = id_of_json id in + Ok (Crates.NonRec id) + | `Assoc [ ("Rec", `List [ ids ]) ] -> + let* ids = list_of_json id_of_json ids in + Ok (Crates.Rec ids) + | _ -> Error "") + +let type_declaration_group_of_json (js : json) : + (Crates.type_declaration_group, string) result = + combine_error_msgs js __FUNCTION__ + (g_declaration_group_of_json T.TypeDeclId.id_of_json js) + +let fun_declaration_group_of_json (js : json) : + (Crates.fun_declaration_group, string) result = + combine_error_msgs js __FUNCTION__ + (g_declaration_group_of_json A.FunDeclId.id_of_json js) + +let global_declaration_group_of_json (js : json) : + (A.GlobalDeclId.id, string) result = + combine_error_msgs js __FUNCTION__ + (match js with + | `Assoc [ ("NonRec", `List [ id ]) ] -> + let* id = A.GlobalDeclId.id_of_json id in + Ok id + | `Assoc [ ("Rec", `List [ _ ]) ] -> Error "got mutually dependent globals" + | _ -> Error "") + +let declaration_group_of_json (js : json) : + (Crates.declaration_group, string) result = + combine_error_msgs js __FUNCTION__ + (match js with + | `Assoc [ ("Type", `List [ decl ]) ] -> + let* decl = type_declaration_group_of_json decl in + Ok (Crates.Type decl) + | `Assoc [ ("Fun", `List [ decl ]) ] -> + let* decl = fun_declaration_group_of_json decl in + Ok (Crates.Fun decl) + | `Assoc [ ("Global", `List [ decl ]) ] -> + let* id = global_declaration_group_of_json decl in + Ok (Crates.Global id) + | _ -> Error "") + +let length_of_json_list (js : json) : (int, string) result = + combine_error_msgs js __FUNCTION__ + (match js with + | `List jsl -> Ok (List.length jsl) + | _ -> Error ("not a list: " ^ show js)) + +let llbc_crate_of_json (js : json) : (Crates.llbc_crate, string) result = + combine_error_msgs js __FUNCTION__ + (match js with + | `Assoc + [ + ("name", name); + ("id_to_file", id_to_file); + ("declarations", declarations); + ("types", types); + ("functions", functions); + ("globals", globals); + ] -> + (* We first deserialize the declaration groups (which simply contain ids) + * and all the declarations *butù* the globals *) + let* name = string_of_json name in + let* id_to_file = id_to_file_of_json id_to_file in + let* declarations = + list_of_json declaration_group_of_json declarations + in + let* types = list_of_json (type_decl_of_json id_to_file) types in + let* functions = list_of_json (fun_decl_of_json id_to_file) functions in + (* When deserializing the globals, we split the global declarations + * between the globals themselves and their bodies, which are simply + * functions with no arguments. We add the global bodies to the list + * of function declarations: the (fresh) ids we use for those bodies + * are simply given by: [num_functions + global_id] *) + let gid_conv = { fun_count = List.length functions } in + let* globals = + list_of_json + (fun js -> global_decl_of_json id_to_file js gid_conv) + globals + in + let globals, global_bodies = List.split globals in + Ok + { + Crates.name; + declarations; + types; + functions = functions @ global_bodies; + globals; + } + | _ -> Error "") |