--- a/src/Tools/Spec_Check/gen_construction.ML Wed Aug 25 22:17:38 2021 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,179 +0,0 @@
-(* Title: Tools/Spec_Check/gen_construction.ML
- Author: Lukas Bulwahn and Nicolai Schaffroth, TU Muenchen
- Author: Christopher League
-
-Constructing generators and pretty printing function for complex types.
-*)
-
-signature GEN_CONSTRUCTION =
-sig
- val register : string * (string * string) -> theory -> theory
- type mltype
- val parse_pred : string -> string * mltype
- val build_check : Proof.context -> string -> mltype * string -> string
- (*val safe_check : string -> mltype * string -> string*)
- val string_of_bool : bool -> string
- val string_of_ref : ('a -> string) -> 'a Unsynchronized.ref -> string
-end;
-
-structure Gen_Construction : GEN_CONSTRUCTION =
-struct
-
-(* Parsing ML types *)
-
-datatype mltype = Var | Con of string * mltype list | Tuple of mltype list;
-
-(*Split string into tokens for parsing*)
-fun split s =
- let
- fun split_symbol #"(" = "( "
- | split_symbol #")" = " )"
- | split_symbol #"," = " ,"
- | split_symbol #":" = " :"
- | split_symbol c = Char.toString c
- fun is_space c = c = #" "
- in String.tokens is_space (String.translate split_symbol s) end;
-
-(*Accept anything that is not a recognized symbol*)
-val scan_name = Scan.one (fn s => not (String.isSubstring s "(),*->;"));
-
-(*Turn a type list into a nested Con*)
-fun make_con [] = raise Empty
- | make_con [c] = c
- | make_con (Con (s, _) :: cl) = Con (s, [make_con cl]);
-
-(*Parse a type*)
-fun parse_type s = (parse_fun || parse_tuple || parse_type_single) s
-
-and parse_type_arg s = (parse_tuple || parse_type_single) s
-
-and parse_type_single s = (parse_con || parse_type_basic) s
-
-and parse_type_basic s = (parse_var || $$ "(" |-- parse_type --| $$ ")") s
-
-and parse_list s =
- ($$ "(" |-- parse_type -- Scan.repeat1 ($$ "," |-- parse_type) --| $$ ")" >> op::) s
-
-and parse_var s = (Scan.one (String.isPrefix "'") >> (fn _ => Var)) s
-
-and parse_con s = ((parse_con_nest
- || parse_type_basic -- parse_con_nest >> (fn (b, Con (t, _) :: tl) => Con (t, [b]) :: tl)
- || parse_list -- parse_con_nest >> (fn (l, Con (t, _) :: tl) => Con (t, l) :: tl))
- >> (make_con o rev)) s
-
-and parse_con_nest s = Scan.unless parse_var (Scan.repeat1 (scan_name >> (fn t => Con (t, [])))) s
-
-and parse_fun s = (parse_type_arg -- $$ "->" -- parse_type >> (fn ((a, f), r) => Con (f, [a, r]))) s
-
-and parse_tuple s = (parse_type_single -- Scan.repeat1 ($$ "*" |-- parse_type_single)
- >> (fn (t, tl) => Tuple (t :: tl))) s;
-
-(*Parse entire type + name*)
-fun parse_function s =
- let
- val p = $$ "val" |-- scan_name --| ($$ "=" -- $$ "fn" -- $$ ":")
- val (name, ty) = p (split s)
- val stop = Scan.stopper (fn _ => ";") (fn s => s = ";");
- val (typ, _) = Scan.finite stop parse_type ty
- in (name, typ) end;
-
-(*Create desired output*)
-fun parse_pred s =
- let
- val (name, Con ("->", t :: _)) = parse_function s
- in (name, t) end;
-
-(* Construct Generators and Pretty Printers *)
-
-(*copied from smt_config.ML *)
-fun string_of_bool b = if b then "true" else "false"
-
-fun string_of_ref f r = f (!r) ^ " ref";
-
-val initial_content = Symtab.make
- [("bool", ("Generator.flip", "Gen_Construction.string_of_bool")),
- ("option", ("Generator.option (Generator.flip' (1, 3))", "ML_Syntax.print_option")),
- ("list", ("Generator.list (Generator.flip' (1, 3))", "ML_Syntax.print_list")),
- ("unit", ("gen_unit", "fn () => \"()\"")),
- ("int", ("Generator.int", "string_of_int")),
- ("real", ("Generator.real", "string_of_real")),
- ("char", ("Generator.char", "fn c => \"#'\" ^ (Char.toString c) ^ \"'\"")),
- ("string", ("Generator.string (Generator.range (0, 100), Generator.char)", "ML_Syntax.print_string")),
- ("->", ("Generator.function_lazy", "fn (_, _) => fn _ => \"fn\"")),
- ("typ", ("Generator.typ 10", "ML_Syntax.print_typ")),
- ("term", ("Generator.term 10", "ML_Syntax.print_term"))]
-
-structure Data = Theory_Data
-(
- type T = (string * string) Symtab.table
- val empty = initial_content
- val extend = I
- fun merge data : T = Symtab.merge (K true) data
-)
-
-fun data_of ctxt tycon =
- (case Symtab.lookup (Data.get (Proof_Context.theory_of ctxt)) tycon of
- SOME data => data
- | NONE => error ("No generator and printer defined for ML type constructor " ^ quote tycon))
-
-val generator_of = fst oo data_of
-val printer_of = snd oo data_of
-
-fun register (ty, data) = Data.map (Symtab.update (ty, data))
-
-(*
-fun remove_gen ty = gen_table := AList.delete (op =) ty (!gen_table);
-*)
-
-fun combine dict [] = dict
- | combine dict dicts = enclose "(" ")" dict ^ " " ^ enclose "(" ")" (commas dicts)
-
-fun compose_generator _ Var = "Generator.int"
- | compose_generator ctxt (Con (s, types)) =
- combine (generator_of ctxt s) (map (compose_generator ctxt) types)
- | compose_generator ctxt (Tuple t) =
- let
- fun tuple_body t = space_implode ""
- (map (fn (ty, n) => "val (x" ^ string_of_int n ^ ", r" ^ string_of_int n ^ ") = " ^
- compose_generator ctxt ty ^ " r" ^ string_of_int (n - 1) ^ " ") (t ~~ (1 upto (length t))))
- fun tuple_ret a = commas (map (fn n => "x" ^ string_of_int n) (1 upto a))
- in
- "fn r0 => let " ^ tuple_body t ^
- "in ((" ^ tuple_ret (length t) ^ "), r" ^ string_of_int (length t) ^ ") end"
- end;
-
-fun compose_printer _ Var = "Int.toString"
- | compose_printer ctxt (Con (s, types)) =
- combine (printer_of ctxt s) (map (compose_printer ctxt) types)
- | compose_printer ctxt (Tuple t) =
- let
- fun tuple_head a = commas (map (fn n => "x" ^ string_of_int n) (1 upto a))
- fun tuple_body t = space_implode " ^ \", \" ^ "
- (map (fn (ty, n) => "(" ^ compose_printer ctxt ty ^ ") x" ^ string_of_int n)
- (t ~~ (1 upto (length t))))
- in "fn (" ^ tuple_head (length t) ^ ") => \"(\" ^ " ^ tuple_body t ^ " ^ \")\"" end;
-
-(*produce compilable string*)
-fun build_check ctxt name (ty, spec) =
- "Spec_Check.checkGen (Context.the_local_context ()) ("
- ^ compose_generator ctxt ty ^ ", SOME (" ^ compose_printer ctxt ty ^ ")) (\""
- ^ name ^ "\", Property.pred (" ^ spec ^ "));";
-
-(*produce compilable string - non-eqtype functions*)
-(*
-fun safe_check name (ty, spec) =
- let
- val default =
- (case AList.lookup (op =) (!gen_table) "->" of
- NONE => ("gen_function_rand", "fn (_, _) => fn _ => \"fn\"")
- | SOME entry => entry)
- in
- (gen_table :=
- AList.update (op =) ("->", ("gen_function_safe", "fn (_, _) => fn _ => \"fn\"")) (!gen_table);
- build_check name (ty, spec) before
- gen_table := AList.update (op =) ("->", default) (!gen_table))
- end;
-*)
-
-end;
-