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