viewcvs.cgi/driver/cduce.ml

open Location

let print_norm ppf d = 
  Location.protect ppf 
    (fun ppf -> Types.Print.print_descr ppf ((*Types.normalize*) d))

let print_value ppf v =
  Location.protect ppf (fun ppf -> Value.print ppf v)

let rec print_exn ppf = function
  | Location (loc, exn) ->
      Format.fprintf ppf "Error %a:@\n" Location.print_loc loc;
      Format.fprintf ppf "%a" Location.html_hilight loc;
      print_exn ppf exn
  | Value.CDuceExn v ->
      Format.fprintf ppf "Uncaught CDuce exception: @[%a@]@\n"
        print_value v
  | Typer.WrongLabel (t,l) ->
      Format.fprintf ppf "Wrong record selection: the label %s@\n" 
        (Types.LabelPool.value l);
      Format.fprintf ppf "applied to an expression of type %a@\n"
        print_norm t
  | Typer.MultipleLabel l ->
      Format.fprintf ppf "Multiple occurences for the record label %s@\n"
        (Types.LabelPool.value l);
  | Typer.ShouldHave (t,msg) ->
      Format.fprintf ppf "This expression should have type %a@\n%s@\n" 
        print_norm t
        msg
  | Typer.Constraint (s,t,msg) ->
      Format.fprintf ppf "This expression should have type %a@\n" 
        print_norm t;
      Format.fprintf ppf "but its infered type is: %a@\n" 
        print_norm s;
      Format.fprintf ppf "which is not a subtype, as shown by the value %a@\n" 
        Types.Sample.print (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"
        print_norm t;
      Format.fprintf ppf "Sample value: %a@\n" 
        Types.Sample.print (Types.Sample.get t)
  | Typer.UnboundId x ->
      Format.fprintf ppf "Unbound identifier %s@\n" x
  | Wlexer.Illegal_character c ->
      Format.fprintf ppf "Illegal character (%s)@\n" (Char.escaped c)
  | Wlexer.Unterminated_comment ->
      Format.fprintf ppf "Comment not terminated@\n"
  | Wlexer.Unterminated_string ->
      Format.fprintf ppf "String literal not terminated@\n"
  | Wlexer.Unterminated_string_in_comment ->
      Format.fprintf ppf "This comment contains an unterminated string literal@\n"
  | Parser.Error s | Stream.Error s -> 
      Format.fprintf ppf "Parsing error: %s@\n" s
  | Location.Generic s ->
      Format.fprintf ppf "%s@\n" s
  | exn ->
      Format.fprintf ppf "%s@\n" (Printexc.to_string exn)

let debug ppf = function
  | `Filter (t,p) -> 
      Format.fprintf ppf "[DEBUG:filter]@\n";
      let t = Typer.typ t
      and p = Typer.pat p in
      let f = Patterns.filter (Types.descr t) p in
      List.iter (fun (x,t) ->
                   Format.fprintf ppf " %s:%a@\n" x
                     print_norm (Types.descr t)) f
  | `Accept p ->
      Format.fprintf ppf "[DEBUG:accept]@\n";
      let p = Typer.pat p in
      let t = Patterns.accept p in
      Format.fprintf ppf " %a@\n" Types.Print.print t
  | `Compile (t,pl) ->
      Format.fprintf ppf "[DEBUG:compile]@\n";
      let t = Typer.typ t
      and pl = List.map Typer.pat pl in
      let pl = Array.of_list 
                 (List.map (fun p -> Patterns.Compile.normal 
                              (Patterns.descr p)) pl) in
      Patterns.Compile.show ppf (Types.descr t) pl
  | `Normal_record t ->
      Format.fprintf ppf "[DEBUG:normal_record]@\n";
      let t = Types.descr (Typer.typ t) in
      let count = ref 0 and seen = ref [] in
      match Types.Record.first_label t with
            | `Empty -> Format.fprintf ppf "Empty"
            | `Any -> Format.fprintf ppf "Any"
            | `Label l ->
                let (pr,ab) = Types.Record.normal' t l in
                Format.fprintf ppf "Label (%s,@[" (Types.LabelPool.value l);
                List.iter (fun (d,n) ->
                             Format.fprintf ppf "%a => @[%a@];@\n"
                             Types.Print.print_descr d
                             Types.Print.print_descr n
                          ) pr;
                Format.fprintf ppf "@] Absent: @[%a@])@\n" 
                  Types.Print.print_descr 
                  (match ab with Some x -> x | None -> Types.empty)
(*
  | `Normal_record t ->
      Format.fprintf ppf "[DEBUG:normal_record]@\n";
      let t = Types.descr (Typer.typ t) in
      let r = Types.Record.normal t in
      let count = ref 0 and seen = ref [] in
      let rec aux ppf x =
        try 
          let no = List.assq x !seen in
          Format.fprintf ppf "[[%i]]" no
        with Not_found ->
          incr count;
          seen := (x, !count) :: !seen;
          Format.fprintf ppf "[[%i]]:" !count;
          match x with
            | `Success -> Format.fprintf ppf "Success"
            | `Fail -> Format.fprintf ppf "Fail"
            | `Label (l,pr,ab) ->
                Format.fprintf ppf "Label (%s,@[" (Types.label_name l);
                List.iter (fun (d,n) ->
                             Format.fprintf ppf "%a => @[%a@];@\n"
                             Types.Print.print_descr d
                             aux n
                          ) pr;
                Format.fprintf ppf "@] Absent: @[%a@])" aux ab
      in
      Format.fprintf ppf "%a@\n" aux r
*)


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

let () = mk_builtin ()

let typing_env = State.ref "Cduce.typing_env" Typer.Env.empty
let eval_env = State.ref "Cduce.eval_env" Eval.Env.empty

let run ppf input =
  let insert_type_bindings = 
    List.iter (fun (x,t) ->
                 typing_env := Typer.Env.add x t !typing_env;
                 Format.fprintf ppf "|- %s : %a@\n@." x print_norm t) 
  in
  
  let type_decl decl =
    insert_type_bindings (Typer.type_let_decl !typing_env decl)
  in

  let eval_decl decl =
    let bindings = Eval.eval_let_decl !eval_env decl in
    List.iter 
      (fun (x,v) ->
         Eval.enter_global x v;
         Format.fprintf ppf "=> %s : @[%a@]@\n@." x print_value v
      ) bindings
  in

  let phrase ph =
    match ph.descr with
      | Ast.EvalStatement e ->
          let (fv,e) = Typer.expr e in
          let t = Typer.type_check !typing_env e Types.any true in
          Location.dump_loc ppf e.Typed.exp_loc;
          Format.fprintf ppf "|- %a@\n@." print_norm t;
          let v = Eval.eval !eval_env e in
          Format.fprintf ppf "=> @[%a@]@\n@." print_value v
      | Ast.LetDecl (p,{descr=Ast.Abstraction _}) -> ()
      | Ast.LetDecl (p,e) ->
          let decl = Typer.let_decl p e in
          type_decl decl;
          eval_decl decl
      | Ast.TypeDecl _ -> ()
      | Ast.Debug l -> debug ppf l
      | _ -> assert false
  in

  let do_fun_decls decls =
    let decls = List.map (fun (p,e) -> Typer.let_decl p e) decls in
    insert_type_bindings (Typer.type_rec_funs !typing_env decls);
    List.iter eval_decl decls
  in
  try 
    let p = 
      try Parser.prog input
      with
        | Stdpp.Exc_located (_, (Location _ as e)) -> raise e
        | Stdpp.Exc_located (loc, e) -> raise (Location (loc, e))
    in
    let (type_decls,fun_decls) = 
      List.fold_left
        (fun ((typs,funs) as accu) ph -> match ph.descr with
           | Ast.TypeDecl (x,t) -> ((x,t) :: typs,funs)
           | Ast.LetDecl (p,({descr=Ast.Abstraction _} as e)) -> 
               (typs, (p,e)::funs)
           | _ -> accu
        ) ([],[]) p in
    Typer.register_global_types type_decls;
    do_fun_decls fun_decls;
    List.iter phrase p;
    true
  with 
    | (Failure _ | Not_found | Invalid_argument _) as e -> 
        raise e  (* To get ocamlrun stack trace *)
    | exn -> print_exn ppf exn; false
        

1	abate	10	open Location
2
3	abate	29	let print_norm ppf d =
4	abate	92	Location.protect ppf
5			(fun ppf -> Types.Print.print_descr ppf ((Types.normalize) d))
6	abate	29
7	abate	92	let print_value ppf v =
8			Location.protect ppf (fun ppf -> Value.print ppf v)
9
10	abate	10	let rec print_exn ppf = function
11	abate	66	\| Location (loc, exn) ->
12	abate	91	Format.fprintf ppf "Error %a:@\n" Location.print_loc loc;
13	abate	92	Format.fprintf ppf "%a" Location.html_hilight loc;
14	abate	91	print_exn ppf exn
15	abate	64	\| Value.CDuceExn v ->
16			Format.fprintf ppf "Uncaught CDuce exception: @[%a@]@\n"
17	abate	92	print_value v
18	abate	26	\| Typer.WrongLabel (t,l) ->
19			Format.fprintf ppf "Wrong record selection: the label %s@\n"
20	abate	78	(Types.LabelPool.value l);
21	abate	27	Format.fprintf ppf "applied to an expression of type %a@\n"
22	abate	29	print_norm t
23	abate	28	\| Typer.MultipleLabel l ->
24			Format.fprintf ppf "Multiple occurences for the record label %s@\n"
25	abate	78	(Types.LabelPool.value l);
26	abate	19	\| Typer.ShouldHave (t,msg) ->
27			Format.fprintf ppf "This expression should have type %a@\n%s@\n"
28	abate	29	print_norm t
29	abate	28	msg
30	abate	10	\| Typer.Constraint (s,t,msg) ->
31	abate	19	Format.fprintf ppf "This expression should have type %a@\n"
32	abate	29	print_norm t;
33	abate	19	Format.fprintf ppf "but its infered type is: %a@\n"
34	abate	29	print_norm s;
35	abate	19	Format.fprintf ppf "which is not a subtype, as shown by the value %a@\n"
36	abate	71	Types.Sample.print (Types.Sample.get (Types.diff s t));
37	abate	19	Format.fprintf ppf "%s@\n" msg
38	abate	17	\| Typer.NonExhaustive t ->
39			Format.fprintf ppf "This pattern matching is not exhaustive@\n";
40			Format.fprintf ppf "Residual type: %a@\n"
41	abate	29	print_norm t;
42	abate	17	Format.fprintf ppf "Sample value: %a@\n"
43	abate	71	Types.Sample.print (Types.Sample.get t)
44	abate	36	\| Typer.UnboundId x ->
45			Format.fprintf ppf "Unbound identifier %s@\n" x
46	abate	81	\| Wlexer.Illegal_character c ->
47			Format.fprintf ppf "Illegal character (%s)@\n" (Char.escaped c)
48			\| Wlexer.Unterminated_comment ->
49			Format.fprintf ppf "Comment not terminated@\n"
50			\| Wlexer.Unterminated_string ->
51			Format.fprintf ppf "String literal not terminated@\n"
52			\| Wlexer.Unterminated_string_in_comment ->
53			Format.fprintf ppf "This comment contains an unterminated string literal@\n"
54	abate	90	\| Parser.Error s \| Stream.Error s ->
55	abate	81	Format.fprintf ppf "Parsing error: %s@\n" s
56	abate	91	\| Location.Generic s ->
57			Format.fprintf ppf "%s@\n" s
58	abate	10	\| exn ->
59			Format.fprintf ppf "%s@\n" (Printexc.to_string exn)
60
61	abate	90	let debug ppf = function
62	abate	43	\| `Filter (t,p) ->
63			Format.fprintf ppf "[DEBUG:filter]@\n";
64			let t = Typer.typ t
65			and p = Typer.pat p in
66			let f = Patterns.filter (Types.descr t) p in
67			List.iter (fun (x,t) ->
68	abate	76	Format.fprintf ppf " %s:%a@\n" x
69	abate	43	print_norm (Types.descr t)) f
70			\| `Accept p ->
71			Format.fprintf ppf "[DEBUG:accept]@\n";
72			let p = Typer.pat p in
73			let t = Patterns.accept p in
74			Format.fprintf ppf " %a@\n" Types.Print.print t
75			\| `Compile (t,pl) ->
76			Format.fprintf ppf "[DEBUG:compile]@\n";
77			let t = Typer.typ t
78			and pl = List.map Typer.pat pl in
79			let pl = Array.of_list
80			(List.map (fun p -> Patterns.Compile.normal
81			(Patterns.descr p)) pl) in
82			Patterns.Compile.show ppf (Types.descr t) pl
83	abate	75	\| `Normal_record t ->
84			Format.fprintf ppf "[DEBUG:normal_record]@\n";
85			let t = Types.descr (Typer.typ t) in
86			let count = ref 0 and seen = ref [] in
87			match Types.Record.first_label t with
88			\| `Empty -> Format.fprintf ppf "Empty"
89			\| `Any -> Format.fprintf ppf "Any"
90			\| `Label l ->
91			let (pr,ab) = Types.Record.normal' t l in
92	abate	78	Format.fprintf ppf "Label (%s,@[" (Types.LabelPool.value l);
93	abate	75	List.iter (fun (d,n) ->
94			Format.fprintf ppf "%a => @[%a@];@\n"
95			Types.Print.print_descr d
96			Types.Print.print_descr n
97			) pr;
98			Format.fprintf ppf "@] Absent: @[%a@])@\n"
99			Types.Print.print_descr
100			(match ab with Some x -> x \| None -> Types.empty)
101			(*
102			\| `Normal_record t ->
103			Format.fprintf ppf "[DEBUG:normal_record]@\n";
104			let t = Types.descr (Typer.typ t) in
105			let r = Types.Record.normal t in
106			let count = ref 0 and seen = ref [] in
107			let rec aux ppf x =
108			try
109			let no = List.assq x !seen in
110			Format.fprintf ppf "[[%i]]" no
111			with Not_found ->
112			incr count;
113			seen := (x, !count) :: !seen;
114			Format.fprintf ppf "[[%i]]:" !count;
115			match x with
116			\| `Success -> Format.fprintf ppf "Success"
117			\| `Fail -> Format.fprintf ppf "Fail"
118			\| `Label (l,pr,ab) ->
119			Format.fprintf ppf "Label (%s,@[" (Types.label_name l);
120			List.iter (fun (d,n) ->
121			Format.fprintf ppf "%a => @[%a@];@\n"
122			Types.Print.print_descr d
123			aux n
124			) pr;
125			Format.fprintf ppf "@] Absent: @[%a@])" aux ab
126			in
127			Format.fprintf ppf "%a@\n" aux r
128			*)
129	abate	66
130
131	abate	90	let mk_builtin () =
132	abate	66	List.iter
133	abate	90	(fun (n,t) -> Typer.register_global_types [n, mk noloc (Ast.Internal t)])
134			Builtin.types
135	abate	66
136	abate	95	let () = mk_builtin ()
137
138			let typing_env = State.ref "Cduce.typing_env" Typer.Env.empty
139			let eval_env = State.ref "Cduce.eval_env" Eval.Env.empty
140
141	abate	90	let run ppf input =
142			let insert_type_bindings =
143			List.iter (fun (x,t) ->
144			typing_env := Typer.Env.add x t !typing_env;
145			Format.fprintf ppf "\|- %s : %a@\n@." x print_norm t)
146			in
147
148			let type_decl decl =
149			insert_type_bindings (Typer.type_let_decl !typing_env decl)
150			in
151	abate	10
152	abate	90	let eval_decl decl =
153			let bindings = Eval.eval_let_decl !eval_env decl in
154			List.iter
155			(fun (x,v) ->
156			Eval.enter_global x v;
157	abate	92	Format.fprintf ppf "=> %s : @[%a@]@\n@." x print_value v
158	abate	90	) bindings
159			in
160	abate	66
161	abate	90	let phrase ph =
162			match ph.descr with
163			\| Ast.EvalStatement e ->
164			let (fv,e) = Typer.expr e in
165			let t = Typer.type_check !typing_env e Types.any true in
166	abate	93	Location.dump_loc ppf e.Typed.exp_loc;
167	abate	90	Format.fprintf ppf "\|- %a@\n@." print_norm t;
168			let v = Eval.eval !eval_env e in
169	abate	92	Format.fprintf ppf "=> @[%a@]@\n@." print_value v
170	abate	90	\| Ast.LetDecl (p,{descr=Ast.Abstraction _}) -> ()
171			\| Ast.LetDecl (p,e) ->
172			let decl = Typer.let_decl p e in
173			type_decl decl;
174			eval_decl decl
175			\| Ast.TypeDecl _ -> ()
176			\| Ast.Debug l -> debug ppf l
177			\| _ -> assert false
178			in
179
180			let do_fun_decls decls =
181			let decls = List.map (fun (p,e) -> Typer.let_decl p e) decls in
182			insert_type_bindings (Typer.type_rec_funs !typing_env decls);
183			List.iter eval_decl decls
184			in
185	abate	13	try
186	abate	90	let p =
187			try Parser.prog input
188			with
189			\| Stdpp.Exc_located (_, (Location _ as e)) -> raise e
190			\| Stdpp.Exc_located (loc, e) -> raise (Location (loc, e))
191			in
192	abate	66	let (type_decls,fun_decls) =
193	abate	13	List.fold_left
194	abate	66	(fun ((typs,funs) as accu) ph -> match ph.descr with
195			\| Ast.TypeDecl (x,t) -> ((x,t) :: typs,funs)
196			\| Ast.LetDecl (p,({descr=Ast.Abstraction _} as e)) ->
197			(typs, (p,e)::funs)
198	abate	13	\| _ -> accu
199	abate	66	) ([],[]) p in
200	abate	13	Typer.register_global_types type_decls;
201	abate	66	do_fun_decls fun_decls;
202	abate	95	List.iter phrase p;
203			true
204	abate	28	with
205	abate	57	\| (Failure _ \| Not_found \| Invalid_argument _) as e ->
206	abate	90	raise e (* To get ocamlrun stack trace *)
207	abate	95	\| exn -> print_exn ppf exn; false
208	abate	10
209	abate	21