viewcvs.cgi/driver/cduce.ml

open Location
exception Usage

let () =
  List.iter 
    (fun (n,t) -> Typer.register_global_types [n, mk noloc (Ast.Internal t)])
    Builtin.types


let (source,input_channel) = 
  match Array.length Sys.argv with
    | 1 -> ("",stdin)
    | 2 -> let s = Sys.argv.(1) in (s, open_in s)
    | _ -> raise Usage

let input = Stream.of_channel input_channel

let ppf = Format.std_formatter
let prog () = 
  try Parser.prog input
  with
    | Stdpp.Exc_located (loc, e) -> raise (Location (loc, e))

let rec print_exn ppf = function
  | Location ((i,j), exn) ->
      if source = "" then
        Format.fprintf ppf "Error at chars %i-%i@\n" i j
      else (
        let (l1,c1) = Location.get_line_number source i
        and (l2,c2) = Location.get_line_number source j in
        if l1 = l2 then
          Format.fprintf ppf "Error at line %i (chars %i-%i)@\n"
            l1 c1 c2
        else
          Format.fprintf ppf "Error at lines %i (char %i) - %i (char %i)@\n"
            l1 c1 l2 c2
      );
      print_exn ppf exn
  | Typer.ShouldHave (t,msg) ->
      Format.fprintf ppf "This expression should have type %a@\n%s@\n" 
        Types.Print.print_descr t
      msg
  | Typer.Constraint (s,t,msg) ->
      Format.fprintf ppf "This expression should have type %a@\n" 
        Types.Print.print_descr t;
      Format.fprintf ppf "but its infered type is: %a@\n" 
        Types.Print.print_descr s;
      Format.fprintf ppf "which is not a subtype, as shown by the value %a@\n" 
        Types.Print.print_sample (Types.Sample.get (Types.diff s t));
      Format.fprintf ppf "%s@\n" msg
  | Typer.NonExhaustive t ->
      Format.fprintf ppf "This pattern matching is not exhaustive@\n";
      Format.fprintf ppf "Residual type: %a@\n"
        Types.Print.print_descr t;
      Format.fprintf ppf "Sample value: %a@\n" 
        Types.Print.print_sample (Types.Sample.get t)
  | exn ->
      Format.fprintf ppf "%s@\n" (Printexc.to_string exn)

let phrase ph =
  match ph.descr with
    | Ast.EvalStatement e ->
        let (fv,e) = Typer.expr e in
        let t = Typer.type_check Typer.Env.empty e Types.any true in
        Format.fprintf ppf "%a@\n" Types.Print.print_descr t
    | Ast.TypeDecl _ -> ()
    | _ -> assert false

let () = 
  try 
    let p = prog () in
    let type_decls = 
      List.fold_left
        (fun accu ph -> match ph.descr with
           | Ast.TypeDecl (x,t) -> (x,t) :: accu
           | _ -> accu
        ) [] p in
    Typer.register_global_types type_decls;
    List.iter phrase p
  with (Failure _) as e -> raise e | exn -> print_exn ppf exn
        

1	abate	10	open Location
2	abate	23	exception Usage
3	abate	10
4	abate	18	let () =
5			List.iter
6			(fun (n,t) -> Typer.register_global_types [n, mk noloc (Ast.Internal t)])
7			Builtin.types
8
9	abate	21
10	abate	25	let (source,input_channel) =
11	abate	23	match Array.length Sys.argv with
12	abate	25	\| 1 -> ("",stdin)
13			\| 2 -> let s = Sys.argv.(1) in (s, open_in s)
14	abate	23	\| _ -> raise Usage
15	abate	21
16	abate	23	let input = Stream.of_channel input_channel
17
18	abate	10	let ppf = Format.std_formatter
19			let prog () =
20			try Parser.prog input
21			with
22	abate	21	\| Stdpp.Exc_located (loc, e) -> raise (Location (loc, e))
23	abate	10
24			let rec print_exn ppf = function
25			\| Location ((i,j), exn) ->
26	abate	25	if source = "" then
27			Format.fprintf ppf "Error at chars %i-%i@\n" i j
28			else (
29			let (l1,c1) = Location.get_line_number source i
30			and (l2,c2) = Location.get_line_number source j in
31			if l1 = l2 then
32			Format.fprintf ppf "Error at line %i (chars %i-%i)@\n"
33			l1 c1 c2
34			else
35			Format.fprintf ppf "Error at lines %i (char %i) - %i (char %i)@\n"
36			l1 c1 l2 c2
37			);
38	abate	10	print_exn ppf exn
39	abate	19	\| Typer.ShouldHave (t,msg) ->
40			Format.fprintf ppf "This expression should have type %a@\n%s@\n"
41			Types.Print.print_descr t
42			msg
43	abate	10	\| Typer.Constraint (s,t,msg) ->
44	abate	19	Format.fprintf ppf "This expression should have type %a@\n"
45			Types.Print.print_descr t;
46			Format.fprintf ppf "but its infered type is: %a@\n"
47			Types.Print.print_descr s;
48			Format.fprintf ppf "which is not a subtype, as shown by the value %a@\n"
49			Types.Print.print_sample (Types.Sample.get (Types.diff s t));
50			Format.fprintf ppf "%s@\n" msg
51	abate	17	\| Typer.NonExhaustive t ->
52			Format.fprintf ppf "This pattern matching is not exhaustive@\n";
53			Format.fprintf ppf "Residual type: %a@\n"
54			Types.Print.print_descr t;
55			Format.fprintf ppf "Sample value: %a@\n"
56			Types.Print.print_sample (Types.Sample.get t)
57	abate	10	\| exn ->
58			Format.fprintf ppf "%s@\n" (Printexc.to_string exn)
59
60			let phrase ph =
61			match ph.descr with
62			\| Ast.EvalStatement e ->
63			let (fv,e) = Typer.expr e in
64	abate	19	let t = Typer.type_check Typer.Env.empty e Types.any true in
65	abate	22	Format.fprintf ppf "%a@\n" Types.Print.print_descr t
66	abate	13	\| Ast.TypeDecl _ -> ()
67	abate	10	\| _ -> assert false
68
69			let () =
70	abate	13	try
71			let p = prog () in
72			let type_decls =
73			List.fold_left
74			(fun accu ph -> match ph.descr with
75			\| Ast.TypeDecl (x,t) -> (x,t) :: accu
76			\| _ -> accu
77			) [] p in
78			Typer.register_global_types type_decls;
79			List.iter phrase p
80	abate	17	with (Failure _) as e -> raise e \| exn -> print_exn ppf exn
81	abate	10
82	abate	21
83
84
85