viewcvs.cgi/driver/cduce.ml

open Location
open Ident

let quiet = ref false
let toplevel = ref false

let typing_env = State.ref "Cduce.typing_env" Env.empty

let eval_env = State.ref "Cduce.eval_env" Env.empty

let enter_global_value x v t =
  eval_env := Env.add x v !eval_env;
  typing_env := Env.add x t !typing_env

let rec is_abstraction = function
  | Ast.Abstraction _ -> true
  | Ast.LocatedExpr (_,e) -> is_abstraction e
  | _ -> false

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

let print_sample ppf s =
  Location.protect ppf
    (fun ppf -> Sample.print ppf s)


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

let dump_env ppf =
  Format.fprintf ppf "Global types:";
  Typer.dump_global_types ppf;
  Format.fprintf ppf ".@.";
  Env.iter 
    (fun x v ->
       let t = Env.find x !typing_env in
       Format.fprintf ppf "@[val %a : @[%a = %a@]@]@."
         U.print (Id.value x) print_norm t print_value v
    )
    !eval_env
  

let rec print_exn ppf = function
  | Location (loc, exn) ->
      Format.fprintf ppf "Error %a:@." 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@]@."
        print_value v
  | Eval.MultipleDeclaration v ->
      Format.fprintf ppf "Multiple declaration for global value %a@." 
        U.print (Id.value v)
  | Typer.WrongLabel (t,l) ->
      Format.fprintf ppf "Wrong record selection: the label %a@." 
        U.print (LabelPool.value l);
      Format.fprintf ppf "applied to an expression of type:@.%a@."
        print_norm t
  | Typer.ShouldHave (t,msg) ->
      Format.fprintf ppf "This expression should have type:@.%a@.%s@." 
        print_norm t
        msg
  | Typer.ShouldHave2 (t1,msg,t2) ->
      Format.fprintf ppf "This expression should have type:@.%a@.%s %a@." 
        print_norm t1
        msg
        print_norm t2
  | Typer.Error s ->
      Format.fprintf ppf "%s@." s
  | Typer.Constraint (s,t) ->
      Format.fprintf ppf "This expression should have type:@.%a@." 
        print_norm t;
      Format.fprintf ppf "but its inferred type is:@.%a@." 
        print_norm s;
      Format.fprintf ppf "which is not a subtype, as shown by the sample:@.%a@." 
        print_sample (Sample.get (Types.diff s t))
  | Typer.NonExhaustive t ->
      Format.fprintf ppf "This pattern matching is not exhaustive@.";
      Format.fprintf ppf "Residual type:@.%a@."
        print_norm t;
      Format.fprintf ppf "Sample:@.%a@." print_sample (Sample.get t)
  | Typer.UnboundId x ->
      Format.fprintf ppf "Unbound identifier %a@." U.print (Id.value x)
  | Wlexer.Illegal_character c ->
      Format.fprintf ppf "Illegal character (%s)@." (Char.escaped c)
  | Wlexer.Unterminated_comment ->
      Format.fprintf ppf "Comment not terminated@."
  | Wlexer.Unterminated_string ->
      Format.fprintf ppf "String literal not terminated@."
  | Wlexer.Unterminated_string_in_comment ->
      Format.fprintf ppf "This comment contains an unterminated string literal@."
  | Parser.Error s | Stream.Error s -> 
      Format.fprintf ppf "Parsing error: %s@." s
  | Location.Generic s ->
      Format.fprintf ppf "%s@." s
  | exn ->
(*      raise exn *)
      Format.fprintf ppf "%s@." (Printexc.to_string exn)

let debug ppf = function
  | `Subtype (t1,t2) ->
      Format.fprintf ppf "[DEBUG:subtype]@.";
      let t1 = Types.descr (Typer.typ t1)
      and t2 = Types.descr (Typer.typ t2) in
      Format.fprintf ppf "%a <= %a : %b@." print_norm t1 print_norm t2
        (Types.subtype t1 t2)
  | `Sample t ->
      Format.fprintf ppf "[DEBUG:sample]@.";
      (try
         let t = Types.descr (Typer.typ t) in
         Format.fprintf ppf "%a@." print_sample (Sample.get t)
       with Not_found ->
         Format.fprintf ppf "Empty type : no sample !@.")
  | `Filter (t,p) -> 
      Format.fprintf ppf "[DEBUG:filter]@.";
      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 " %a:%a@." U.print (Id.value x)
                     print_norm (Types.descr t)) f
  | `Accept p ->
      Format.fprintf ppf "[DEBUG:accept]@.";
      let p = Typer.pat p in
      let t = Patterns.accept p in
      Format.fprintf ppf " %a@." Types.Print.print (Types.descr t)
  | `Compile (t,pl) ->
      Format.fprintf ppf "[DEBUG:compile]@.";
      let t = Typer.typ t
      and pl = List.map Typer.pat pl in
      Patterns.Compile.debug_compile ppf t pl

let insert_bindings ppf =
  List.iter2 
    (fun (x,t) (y,v) ->
       assert (x = y);
       typing_env := Env.add x t !typing_env;
       eval_env := Env.add x v !eval_env;
       if not !quiet then
         Format.fprintf ppf "val %a : @[%a@] = @[%a@]@." 
           U.print (Id.value x) print_norm t print_value v)
  
let rec collect_funs ppf accu = function
  | { descr = Ast.FunDecl e } :: rest -> 
      let (_,e) = Typer.expr e in
      collect_funs ppf (e::accu) rest
  | rest ->
      let typs = Typer.type_rec_funs !typing_env accu in
      Typer.report_unused_branches ();
      let vals = Eval.eval_rec_funs !eval_env accu in
      insert_bindings ppf typs vals;
      rest

let rec collect_types ppf accu = function
  | { descr = Ast.TypeDecl (x,t) } :: rest -> 
      collect_types ppf ((x,t) :: accu) rest
  | rest ->
      Typer.register_global_types accu;
      rest

let rec phrases ppf phs = match phs with
  | { descr = Ast.FunDecl _ } :: _ -> 
      phrases ppf (collect_funs ppf [] phs)
  | { descr = Ast.TypeDecl (_,_) } :: _ ->
      phrases ppf (collect_types ppf [] phs)
  | { descr = Ast.EvalStatement e } :: rest ->
      let (fv,e) = Typer.expr e in
      let t = Typer.type_check !typing_env e Types.any true in
      Typer.report_unused_branches ();
      if not !quiet then
        Location.dump_loc ppf e.Typed.exp_loc;
      let v = Eval.eval !eval_env e in
      if not !quiet then
        Format.fprintf ppf "- : @[%a@] = @[%a@]@." print_norm t print_value v;
      phrases ppf rest
  | { descr = Ast.LetDecl (p,e) } :: rest ->
      let decl = Typer.let_decl p e in
      let typs = Typer.type_let_decl !typing_env decl in
      Typer.report_unused_branches ();
      let vals = Eval.eval_let_decl !eval_env decl in
      insert_bindings ppf typs vals;
      phrases ppf rest
  | { descr = Ast.Debug l } :: rest -> 
      debug ppf l;
      phrases ppf rest
  | { descr = Ast.Directive `Quit } :: rest ->
      if !toplevel then raise End_of_file;
      phrases ppf rest
  | { descr = Ast.Directive `Env } :: rest ->
      dump_env ppf;
      phrases ppf rest
  | [] -> ()

let run rule ppf ppf_err input =
  try 
    let p = 
      try rule input
      with
        | Stdpp.Exc_located (_, (Location _ as e)) ->
            Parser.sync input; raise e
        | Stdpp.Exc_located ((i,j), e) -> 
            Parser.sync input; raise_loc i j e
    in
    phrases ppf p;
    true
  with 
    | (End_of_file | Failure _ | Not_found | Invalid_argument _ | Sys.Break) 
        as e -> 
        raise e
    | exn -> 
        print_exn ppf_err exn;
        Format.fprintf ppf_err "@.";
        false

let script = run Parser.prog
let topinput = run Parser.top_phrases
1	abate	10	open Location
2	abate	225	open Ident
3	abate	10
4	abate	217	let quiet = ref false
5	abate	446	let toplevel = ref false
6	abate	217
7	abate	421	let typing_env = State.ref "Cduce.typing_env" Env.empty
8	abate	107
9	abate	431	let eval_env = State.ref "Cduce.eval_env" Env.empty
10
11	abate	368	let enter_global_value x v t =
12	abate	431	eval_env := Env.add x v !eval_env;
13	abate	421	typing_env := Env.add x t !typing_env
14	abate	368
15	abate	332	let rec is_abstraction = function
16			\| Ast.Abstraction _ -> true
17			\| Ast.LocatedExpr (_,e) -> is_abstraction e
18			\| _ -> false
19
20	abate	29	let print_norm ppf d =
21	abate	92	Location.protect ppf
22	abate	367	(fun ppf -> Types.Print.print ppf ((Types.normalize) d))
23	abate	29
24	abate	423	let print_sample ppf s =
25			Location.protect ppf
26			(fun ppf -> Sample.print ppf s)
27
28
29	abate	92	let print_value ppf v =
30			Location.protect ppf (fun ppf -> Value.print ppf v)
31
32	abate	107	let dump_env ppf =
33	abate	278	Format.fprintf ppf "Global types:";
34			Typer.dump_global_types ppf;
35	abate	433	Format.fprintf ppf ".@.";
36	abate	421	Env.iter
37	abate	107	(fun x v ->
38	abate	421	let t = Env.find x !typing_env in
39	abate	433	Format.fprintf ppf "@[val %a : @[%a = %a@]@]@."
40			U.print (Id.value x) print_norm t print_value v
41	abate	107	)
42	abate	431	!eval_env
43	abate	107
44
45	abate	10	let rec print_exn ppf = function
46	abate	66	\| Location (loc, exn) ->
47	abate	433	Format.fprintf ppf "Error %a:@." Location.print_loc loc;
48	abate	92	Format.fprintf ppf "%a" Location.html_hilight loc;
49	abate	91	print_exn ppf exn
50	abate	64	\| Value.CDuceExn v ->
51	abate	433	Format.fprintf ppf "Uncaught CDuce exception: @[%a@]@."
52	abate	92	print_value v
53	abate	368	\| Eval.MultipleDeclaration v ->
54	abate	433	Format.fprintf ppf "Multiple declaration for global value %a@."
55	abate	374	U.print (Id.value v)
56	abate	26	\| Typer.WrongLabel (t,l) ->
57	abate	433	Format.fprintf ppf "Wrong record selection: the label %a@."
58	abate	374	U.print (LabelPool.value l);
59	abate	433	Format.fprintf ppf "applied to an expression of type:@.%a@."
60	abate	29	print_norm t
61	abate	19	\| Typer.ShouldHave (t,msg) ->
62	abate	433	Format.fprintf ppf "This expression should have type:@.%a@.%s@."
63	abate	29	print_norm t
64	abate	28	msg
65	abate	355	\| Typer.ShouldHave2 (t1,msg,t2) ->
66	abate	433	Format.fprintf ppf "This expression should have type:@.%a@.%s %a@."
67	abate	355	print_norm t1
68			msg
69			print_norm t2
70	abate	421	\| Typer.Error s ->
71	abate	433	Format.fprintf ppf "%s@." s
72	abate	421	\| Typer.Constraint (s,t) ->
73	abate	433	Format.fprintf ppf "This expression should have type:@.%a@."
74	abate	29	print_norm t;
75	abate	433	Format.fprintf ppf "but its inferred type is:@.%a@."
76	abate	29	print_norm s;
77	abate	433	Format.fprintf ppf "which is not a subtype, as shown by the sample:@.%a@."
78	abate	423	print_sample (Sample.get (Types.diff s t))
79	abate	17	\| Typer.NonExhaustive t ->
80	abate	433	Format.fprintf ppf "This pattern matching is not exhaustive@.";
81			Format.fprintf ppf "Residual type:@.%a@."
82	abate	29	print_norm t;
83	abate	433	Format.fprintf ppf "Sample:@.%a@." print_sample (Sample.get t)
84	abate	36	\| Typer.UnboundId x ->
85	abate	433	Format.fprintf ppf "Unbound identifier %a@." U.print (Id.value x)
86	abate	81	\| Wlexer.Illegal_character c ->
87	abate	433	Format.fprintf ppf "Illegal character (%s)@." (Char.escaped c)
88	abate	81	\| Wlexer.Unterminated_comment ->
89	abate	433	Format.fprintf ppf "Comment not terminated@."
90	abate	81	\| Wlexer.Unterminated_string ->
91	abate	433	Format.fprintf ppf "String literal not terminated@."
92	abate	81	\| Wlexer.Unterminated_string_in_comment ->
93	abate	433	Format.fprintf ppf "This comment contains an unterminated string literal@."
94	abate	90	\| Parser.Error s \| Stream.Error s ->
95	abate	433	Format.fprintf ppf "Parsing error: %s@." s
96	abate	91	\| Location.Generic s ->
97	abate	433	Format.fprintf ppf "%s@." s
98	abate	10	\| exn ->
99	abate	403	(* raise exn *)
100	abate	433	Format.fprintf ppf "%s@." (Printexc.to_string exn)
101	abate	10
102	abate	90	let debug ppf = function
103	abate	224	\| `Subtype (t1,t2) ->
104	abate	433	Format.fprintf ppf "[DEBUG:subtype]@.";
105	abate	277	let t1 = Types.descr (Typer.typ t1)
106			and t2 = Types.descr (Typer.typ t2) in
107	abate	433	Format.fprintf ppf "%a <= %a : %b@." print_norm t1 print_norm t2
108	abate	224	(Types.subtype t1 t2)
109	abate	407	\| `Sample t ->
110	abate	433	Format.fprintf ppf "[DEBUG:sample]@.";
111			(try
112			let t = Types.descr (Typer.typ t) in
113			Format.fprintf ppf "%a@." print_sample (Sample.get t)
114			with Not_found ->
115			Format.fprintf ppf "Empty type : no sample !@.")
116	abate	43	\| `Filter (t,p) ->
117	abate	433	Format.fprintf ppf "[DEBUG:filter]@.";
118	abate	277	let t = Typer.typ t
119			and p = Typer.pat p in
120	abate	43	let f = Patterns.filter (Types.descr t) p in
121			List.iter (fun (x,t) ->
122	abate	433	Format.fprintf ppf " %a:%a@." U.print (Id.value x)
123	abate	43	print_norm (Types.descr t)) f
124			\| `Accept p ->
125	abate	433	Format.fprintf ppf "[DEBUG:accept]@.";
126	abate	277	let p = Typer.pat p in
127	abate	43	let t = Patterns.accept p in
128	abate	433	Format.fprintf ppf " %a@." Types.Print.print (Types.descr t)
129	abate	43	\| `Compile (t,pl) ->
130	abate	433	Format.fprintf ppf "[DEBUG:compile]@.";
131	abate	277	let t = Typer.typ t
132			and pl = List.map Typer.pat pl in
133	abate	149	Patterns.Compile.debug_compile ppf t pl
134	abate	66
135	abate	433	let insert_bindings ppf =
136			List.iter2
137			(fun (x,t) (y,v) ->
138			assert (x = y);
139	abate	431	typing_env := Env.add x t !typing_env;
140			eval_env := Env.add x v !eval_env;
141			if not !quiet then
142	abate	433	Format.fprintf ppf "val %a : @[%a@] = @[%a@]@."
143			U.print (Id.value x) print_norm t print_value v)
144	abate	90
145	abate	431	let rec collect_funs ppf accu = function
146			\| { descr = Ast.FunDecl e } :: rest ->
147			let (_,e) = Typer.expr e in
148			collect_funs ppf (e::accu) rest
149			\| rest ->
150	abate	433	let typs = Typer.type_rec_funs !typing_env accu in
151	abate	431	Typer.report_unused_branches ();
152	abate	433	let vals = Eval.eval_rec_funs !eval_env accu in
153			insert_bindings ppf typs vals;
154	abate	431	rest
155	abate	10
156	abate	431	let rec collect_types ppf accu = function
157			\| { descr = Ast.TypeDecl (x,t) } :: rest ->
158			collect_types ppf ((x,t) :: accu) rest
159			\| rest ->
160			Typer.register_global_types accu;
161			rest
162	abate	66
163	abate	431	let rec phrases ppf phs = match phs with
164			\| { descr = Ast.FunDecl _ } :: _ ->
165			phrases ppf (collect_funs ppf [] phs)
166			\| { descr = Ast.TypeDecl (_,_) } :: _ ->
167			phrases ppf (collect_types ppf [] phs)
168			\| { descr = Ast.EvalStatement e } :: rest ->
169			let (fv,e) = Typer.expr e in
170			let t = Typer.type_check !typing_env e Types.any true in
171			Typer.report_unused_branches ();
172			if not !quiet then
173			Location.dump_loc ppf e.Typed.exp_loc;
174			let v = Eval.eval !eval_env e in
175			if not !quiet then
176	abate	433	Format.fprintf ppf "- : @[%a@] = @[%a@]@." print_norm t print_value v;
177	abate	431	phrases ppf rest
178			\| { descr = Ast.LetDecl (p,e) } :: rest ->
179			let decl = Typer.let_decl p e in
180	abate	433	let typs = Typer.type_let_decl !typing_env decl in
181	abate	431	Typer.report_unused_branches ();
182	abate	433	let vals = Eval.eval_let_decl !eval_env decl in
183			insert_bindings ppf typs vals;
184	abate	431	phrases ppf rest
185			\| { descr = Ast.Debug l } :: rest ->
186			debug ppf l;
187			phrases ppf rest
188	abate	446	\| { descr = Ast.Directive `Quit } :: rest ->
189			if !toplevel then raise End_of_file;
190			phrases ppf rest
191			\| { descr = Ast.Directive `Env } :: rest ->
192			dump_env ppf;
193			phrases ppf rest
194	abate	431	\| [] -> ()
195	abate	90
196	abate	431	let run rule ppf ppf_err input =
197	abate	13	try
198	abate	90	let p =
199	abate	431	try rule input
200	abate	90	with
201	abate	431	\| Stdpp.Exc_located (_, (Location _ as e)) ->
202			Parser.sync input; raise e
203			\| Stdpp.Exc_located ((i,j), e) ->
204			Parser.sync input; raise_loc i j e
205	abate	90	in
206	abate	431	phrases ppf p;
207	abate	95	true
208	abate	28	with
209	abate	446	\| (End_of_file \| Failure _ \| Not_found \| Invalid_argument _ \| Sys.Break)
210			as e ->
211			raise e
212	abate	431	\| exn ->
213			print_exn ppf_err exn;
214			Format.fprintf ppf_err "@.";
215			false
216	abate	21
217	abate	431	let script = run Parser.prog
218	abate	446	let topinput = run Parser.top_phrases