viewcvs.cgi/driver/cduce.ml

open Location

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

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 dump_env ppf =
  Format.fprintf ppf "Global types:";
  Typer.Env.iter (fun x _ -> Format.fprintf ppf " %s" x) !glb_env;
  Format.fprintf ppf ".@\n";
  Eval.Env.iter 
    (fun x v ->
       let t = Typer.Env.find x !typing_env in
       Format.fprintf ppf "@[|- %s : %a@ => %a@]@\n"
         x
         print_norm t
         print_value v
    )
    !eval_env
  

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 ->
      raise 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 !glb_env t
      and p = Typer.pat !glb_env 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
  | `Compile2 (t,pl) -> 
      Format.fprintf ppf "[DEBUG:compile2]@\n";
(*      let t = Types.descr (Typer.typ !glb_env t) in
      let pl = List.map (fun p -> 
                           let p = Typer.pat !glb_env p in
                           let a = Types.descr (Patterns.accept p) in
                           (Some p, Types.cap a t)) pl in
      let d = Patterns.Compiler.make_dispatcher t pl in
      Patterns.Compiler.print_disp ppf d *)
      ()

  | `Accept p ->
      Format.fprintf ppf "[DEBUG:accept]@\n";
      let p = Typer.pat !glb_env 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 !glb_env t
      and pl = List.map (Typer.pat !glb_env) pl in
      Patterns.Compile.debug_compile ppf t pl
  | `Normal_record t ->
      Format.fprintf ppf "[DEBUG:normal_record]@\n";
      ()
(*
      let t = Types.descr (Typer.typ !glb_env 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 !glb_env 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 () =
  let bi = List.map (fun (n,t) -> [n, mk noloc (Ast.Internal t)]) 
             Builtin.types in
  glb_env := List.fold_left Typer.register_global_types !glb_env bi

let () = mk_builtin ()


let run ppf ppf_err 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.empty 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 !glb_env 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.empty 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 !glb_env 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 !glb_env p e) decls in
    insert_type_bindings (Typer.type_rec_funs !typing_env decls);
    List.iter eval_decl decls
  in
  let rec phrases funs = function
    | { descr = Ast.LetDecl (p,({descr=Ast.Abstraction _} as e))} :: phs -> 
        phrases ((p,e)::funs) phs
    | ph :: phs ->
        do_fun_decls funs;
        phrase ph;
        phrases [] phs
    | _ ->
        do_fun_decls funs
  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
    glb_env := Typer.register_global_types !glb_env type_decls;
    phrases [] p;
    true
  with 
    | (Failure _ | Not_found | Invalid_argument _) as e -> 
        raise e  (* To get ocamlrun stack trace *)
    | exn -> print_exn ppf_err exn; false
        

1	open Location
2
3	let typing_env = State.ref "Cduce.typing_env" Typer.Env.empty
4	let glb_env = State.ref "Cduce.glb_env" Typer.Env.empty
5	let eval_env = Eval.global_env
6
7	let print_norm ppf d =
8	Location.protect ppf
9	(fun ppf -> Types.Print.print_descr ppf ((Types.normalize) d))
10
11	let print_value ppf v =
12	Location.protect ppf (fun ppf -> Value.print ppf v)
13
14	let dump_env ppf =
15	Format.fprintf ppf "Global types:";
16	Typer.Env.iter (fun x _ -> Format.fprintf ppf " %s" x) !glb_env;
17	Format.fprintf ppf ".@\n";
18	Eval.Env.iter
19	(fun x v ->
20	let t = Typer.Env.find x !typing_env in
21	Format.fprintf ppf "@[\|- %s : %a@ => %a@]@\n"
22	x
23	print_norm t
24	print_value v
25	)
26	!eval_env
27
28
29	let rec print_exn ppf = function
30	\| Location (loc, exn) ->
31	Format.fprintf ppf "Error %a:@\n" Location.print_loc loc;
32	Format.fprintf ppf "%a" Location.html_hilight loc;
33	print_exn ppf exn
34	\| Value.CDuceExn v ->
35	Format.fprintf ppf "Uncaught CDuce exception: @[%a@]@\n"
36	print_value v
37	\| Typer.WrongLabel (t,l) ->
38	Format.fprintf ppf "Wrong record selection: the label %s@\n"
39	(Types.LabelPool.value l);
40	Format.fprintf ppf "applied to an expression of type %a@\n"
41	print_norm t
42	\| Typer.MultipleLabel l ->
43	Format.fprintf ppf "Multiple occurences for the record label %s@\n"
44	(Types.LabelPool.value l);
45	\| Typer.ShouldHave (t,msg) ->
46	Format.fprintf ppf "This expression should have type %a@\n%s@\n"
47	print_norm t
48	msg
49	\| Typer.Constraint (s,t,msg) ->
50	Format.fprintf ppf "This expression should have type %a@\n"
51	print_norm t;
52	Format.fprintf ppf "but its infered type is: %a@\n"
53	print_norm s;
54	Format.fprintf ppf "which is not a subtype, as shown by the value %a@\n"
55	Types.Sample.print (Types.Sample.get (Types.diff s t));
56	Format.fprintf ppf "%s@\n" msg
57	\| Typer.NonExhaustive t ->
58	Format.fprintf ppf "This pattern matching is not exhaustive@\n";
59	Format.fprintf ppf "Residual type: %a@\n"
60	print_norm t;
61	Format.fprintf ppf "Sample value: %a@\n"
62	Types.Sample.print (Types.Sample.get t)
63	\| Typer.UnboundId x ->
64	Format.fprintf ppf "Unbound identifier %s@\n" x
65	\| Wlexer.Illegal_character c ->
66	Format.fprintf ppf "Illegal character (%s)@\n" (Char.escaped c)
67	\| Wlexer.Unterminated_comment ->
68	Format.fprintf ppf "Comment not terminated@\n"
69	\| Wlexer.Unterminated_string ->
70	Format.fprintf ppf "String literal not terminated@\n"
71	\| Wlexer.Unterminated_string_in_comment ->
72	Format.fprintf ppf "This comment contains an unterminated string literal@\n"
73	\| Parser.Error s \| Stream.Error s ->
74	Format.fprintf ppf "Parsing error: %s@\n" s
75	\| Location.Generic s ->
76	Format.fprintf ppf "%s@\n" s
77	\| exn ->
78	raise exn
79	(*
80	Format.fprintf ppf "%s@\n" (Printexc.to_string exn)
81	*)
82
83	let debug ppf = function
84	\| `Filter (t,p) ->
85	Format.fprintf ppf "[DEBUG:filter]@\n";
86	let t = Typer.typ !glb_env t
87	and p = Typer.pat !glb_env p in
88	let f = Patterns.filter (Types.descr t) p in
89	List.iter (fun (x,t) ->
90	Format.fprintf ppf " %s:%a@\n" x
91	print_norm (Types.descr t)) f
92	\| `Compile2 (t,pl) ->
93	Format.fprintf ppf "[DEBUG:compile2]@\n";
94	(* let t = Types.descr (Typer.typ !glb_env t) in
95	let pl = List.map (fun p ->
96	let p = Typer.pat !glb_env p in
97	let a = Types.descr (Patterns.accept p) in
98	(Some p, Types.cap a t)) pl in
99	let d = Patterns.Compiler.make_dispatcher t pl in
100	Patterns.Compiler.print_disp ppf d *)
101	()
102
103	\| `Accept p ->
104	Format.fprintf ppf "[DEBUG:accept]@\n";
105	let p = Typer.pat !glb_env p in
106	let t = Patterns.accept p in
107	Format.fprintf ppf " %a@\n" Types.Print.print t
108	\| `Compile (t,pl) ->
109	Format.fprintf ppf "[DEBUG:compile]@\n";
110	let t = Typer.typ !glb_env t
111	and pl = List.map (Typer.pat !glb_env) pl in
112	Patterns.Compile.debug_compile ppf t pl
113	\| `Normal_record t ->
114	Format.fprintf ppf "[DEBUG:normal_record]@\n";
115	()
116	(*
117	let t = Types.descr (Typer.typ !glb_env t) in
118	let count = ref 0 and seen = ref [] in
119	match Types.Record.first_label t with
120	\| `Empty -> Format.fprintf ppf "Empty"
121	\| `Any -> Format.fprintf ppf "Any"
122	\| `Label l ->
123	let (pr,ab) = Types.Record.normal' t l in
124	Format.fprintf ppf "Label (%s,@[" (Types.LabelPool.value l);
125	List.iter (fun (d,n) ->
126	Format.fprintf ppf "%a => @[%a@];@\n"
127	Types.Print.print_descr d
128	Types.Print.print_descr n
129	) pr;
130	Format.fprintf ppf "@] Absent: @[%a@])@\n"
131	Types.Print.print_descr
132	(match ab with Some x -> x \| None -> Types.empty)
133	*)
134	(*
135	\| `Normal_record t ->
136	Format.fprintf ppf "[DEBUG:normal_record]@\n";
137	let t = Types.descr (Typer.typ !glb_env t) in
138	let r = Types.Record.normal t in
139	let count = ref 0 and seen = ref [] in
140	let rec aux ppf x =
141	try
142	let no = List.assq x !seen in
143	Format.fprintf ppf "[[%i]]" no
144	with Not_found ->
145	incr count;
146	seen := (x, !count) :: !seen;
147	Format.fprintf ppf "[[%i]]:" !count;
148	match x with
149	\| `Success -> Format.fprintf ppf "Success"
150	\| `Fail -> Format.fprintf ppf "Fail"
151	\| `Label (l,pr,ab) ->
152	Format.fprintf ppf "Label (%s,@[" (Types.label_name l);
153	List.iter (fun (d,n) ->
154	Format.fprintf ppf "%a => @[%a@];@\n"
155	Types.Print.print_descr d
156	aux n
157	) pr;
158	Format.fprintf ppf "@] Absent: @[%a@])" aux ab
159	in
160	Format.fprintf ppf "%a@\n" aux r
161	*)
162
163
164
165	let mk_builtin () =
166	let bi = List.map (fun (n,t) -> [n, mk noloc (Ast.Internal t)])
167	Builtin.types in
168	glb_env := List.fold_left Typer.register_global_types !glb_env bi
169
170	let () = mk_builtin ()
171
172
173	let run ppf ppf_err input =
174	let insert_type_bindings =
175	List.iter (fun (x,t) ->
176	typing_env := Typer.Env.add x t !typing_env;
177	Format.fprintf ppf "\|- %s : %a@\n@." x print_norm t)
178	in
179
180	let type_decl decl =
181	insert_type_bindings (Typer.type_let_decl !typing_env decl)
182	in
183
184	let eval_decl decl =
185	let bindings = Eval.eval_let_decl Eval.Env.empty decl in
186	List.iter
187	(fun (x,v) ->
188	Eval.enter_global x v;
189	Format.fprintf ppf "=> %s : @[%a@]@\n@." x print_value v
190	) bindings
191	in
192
193	let phrase ph =
194	match ph.descr with
195	\| Ast.EvalStatement e ->
196	let (fv,e) = Typer.expr !glb_env e in
197	let t = Typer.type_check !typing_env e Types.any true in
198	Location.dump_loc ppf e.Typed.exp_loc;
199	Format.fprintf ppf "\|- %a@\n@." print_norm t;
200	let v = Eval.eval Eval.Env.empty e in
201	Format.fprintf ppf "=> @[%a@]@\n@." print_value v
202	\| Ast.LetDecl (p,{descr=Ast.Abstraction _}) -> ()
203	\| Ast.LetDecl (p,e) ->
204	let decl = Typer.let_decl !glb_env p e in
205	type_decl decl;
206	eval_decl decl
207	\| Ast.TypeDecl _ -> ()
208	\| Ast.Debug l -> debug ppf l
209	\| _ -> assert false
210	in
211
212	let do_fun_decls decls =
213	let decls = List.map (fun (p,e) -> Typer.let_decl !glb_env p e) decls in
214	insert_type_bindings (Typer.type_rec_funs !typing_env decls);
215	List.iter eval_decl decls
216	in
217	let rec phrases funs = function
218	\| { descr = Ast.LetDecl (p,({descr=Ast.Abstraction _} as e))} :: phs ->
219	phrases ((p,e)::funs) phs
220	\| ph :: phs ->
221	do_fun_decls funs;
222	phrase ph;
223	phrases [] phs
224	\| _ ->
225	do_fun_decls funs
226	in
227	try
228	let p =
229	try Parser.prog input
230	with
231	\| Stdpp.Exc_located (_, (Location _ as e)) -> raise e
232	\| Stdpp.Exc_located (loc, e) -> raise (Location (loc, e))
233	in
234	let (type_decls,fun_decls) =
235	List.fold_left
236	(fun ((typs,funs) as accu) ph -> match ph.descr with
237	\| Ast.TypeDecl (x,t) -> ((x,t) :: typs,funs)
238	\| Ast.LetDecl (p,({descr=Ast.Abstraction _} as e)) ->
239	(typs, (p,e)::funs)
240	\| _ -> accu
241	) ([],[]) p in
242	glb_env := Typer.register_global_types !glb_env type_decls;
243	phrases [] p;
244	true
245	with
246	\| (Failure _ \| Not_found \| Invalid_argument _) as e ->
247	raise e (* To get ocamlrun stack trace *)
248	\| exn -> print_exn ppf_err exn; false
249
250