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_protect ppf s =
  Location.protect ppf (fun ppf -> Format.fprintf ppf "%s" s)

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

let dump_env ppf =
  Format.fprintf ppf "Types:%t@." Typer.dump_global_types;
  Format.fprintf ppf "Namespace prefixes:@\n%t" Typer.dump_global_ns;
  Format.fprintf ppf "Namespace prefixes used for pretty-printing:@.%t"
    Ns.InternalPrinter.dump;
  Format.fprintf ppf "Values:@\n";
  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, w, exn) ->
      Format.fprintf ppf "Error %a:@." Location.print_loc (loc,w);
      Format.fprintf ppf "%a" Location.html_hilight (loc,w); 
      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; field %a " 
        Label.print (LabelPool.value l);
      Format.fprintf ppf "not present in an expression of type:@.%a@."
        print_norm t
  | Typer.ShouldHave (t,msg) ->
      Format.fprintf ppf "This expression should have type:@.%a@.%a@." 
        print_norm t
        print_protect msg
  | Typer.ShouldHave2 (t1,msg,t2) ->
      Format.fprintf ppf "This expression should have type:@.%a@.%a %a@." 
        print_norm t1
        print_protect msg
        print_norm t2
  | Typer.Error s ->
      Format.fprintf ppf "%a@." print_protect 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,tn) ->
      Format.fprintf ppf "Unbound identifier %a%s@." U.print (Id.value x)
        (if tn then " (it is a type name)" else "")
  | Wlexer.Illegal_character c ->
      Format.fprintf ppf "Illegal character (%a)@." print_protect (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: %a@." print_protect s
  | Location.Generic s ->
      Format.fprintf ppf "%a@." print_protect s
  | exn ->
(*      raise exn *)
      Format.fprintf ppf "%a@." print_protect (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
      let s = Types.subtype t1 t2 in
      Format.fprintf ppf "%a %a %a : %b@." print_norm t1 print_protect "<=" print_norm t2 s
  | `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.SchemaDecl (name, schema) } :: rest ->
      Typer.register_schema name schema;
      phrases ppf rest
  | { descr = Ast.Namespace (pr,ns) } :: rest ->
      Typer.register_global_ns pr ns;
      phrases ppf rest
  | { 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,`Full);
      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
  | { descr = Ast.Directive `Reinit_ns } :: rest ->
      Typer.set_ns_table_for_printer ();
      phrases ppf rest
  | [] -> ()

let run rule ppf ppf_err input =
  Typer.clear_unused_branches ();
  try 
    let p = 
      try rule input
      with
        | Stdpp.Exc_located (_, (Location _ as e)) ->
            Parser.sync (); raise e
        | Stdpp.Exc_located ((i,j), e) -> 
            Parser.sync (); 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	abate	541	let print_protect ppf s =
29			Location.protect ppf (fun ppf -> Format.fprintf ppf "%s" s)
30	abate	423
31	abate	92	let print_value ppf v =
32			Location.protect ppf (fun ppf -> Value.print ppf v)
33
34	abate	107	let dump_env ppf =
35	abate	553	Format.fprintf ppf "Types:%t@." Typer.dump_global_types;
36	abate	552	Format.fprintf ppf "Namespace prefixes:@\n%t" Typer.dump_global_ns;
37	abate	553	Format.fprintf ppf "Namespace prefixes used for pretty-printing:@.%t"
38	abate	552	Ns.InternalPrinter.dump;
39			Format.fprintf ppf "Values:@\n";
40	abate	421	Env.iter
41	abate	107	(fun x v ->
42	abate	421	let t = Env.find x !typing_env in
43	abate	433	Format.fprintf ppf "@[val %a : @[%a = %a@]@]@."
44			U.print (Id.value x) print_norm t print_value v
45	abate	107	)
46	abate	552	!eval_env
47	abate	107
48	abate	10	let rec print_exn ppf = function
49	abate	522	\| Location (loc, w, exn) ->
50			Format.fprintf ppf "Error %a:@." Location.print_loc (loc,w);
51	abate	622	Format.fprintf ppf "%a" Location.html_hilight (loc,w);
52	abate	91	print_exn ppf exn
53	abate	64	\| Value.CDuceExn v ->
54	abate	433	Format.fprintf ppf "Uncaught CDuce exception: @[%a@]@."
55	abate	92	print_value v
56	abate	368	\| Eval.MultipleDeclaration v ->
57	abate	433	Format.fprintf ppf "Multiple declaration for global value %a@."
58	abate	374	U.print (Id.value v)
59	abate	26	\| Typer.WrongLabel (t,l) ->
60	abate	529	Format.fprintf ppf "Wrong record selection; field %a "
61	abate	542	Label.print (LabelPool.value l);
62	abate	529	Format.fprintf ppf "not present in an expression of type:@.%a@."
63	abate	29	print_norm t
64	abate	19	\| Typer.ShouldHave (t,msg) ->
65	abate	622	Format.fprintf ppf "This expression should have type:@.%a@.%a@."
66	abate	29	print_norm t
67	abate	622	print_protect msg
68	abate	355	\| Typer.ShouldHave2 (t1,msg,t2) ->
69	abate	622	Format.fprintf ppf "This expression should have type:@.%a@.%a %a@."
70	abate	355	print_norm t1
71	abate	622	print_protect msg
72	abate	355	print_norm t2
73	abate	421	\| Typer.Error s ->
74	abate	622	Format.fprintf ppf "%a@." print_protect s
75	abate	421	\| Typer.Constraint (s,t) ->
76	abate	433	Format.fprintf ppf "This expression should have type:@.%a@."
77	abate	29	print_norm t;
78	abate	433	Format.fprintf ppf "but its inferred type is:@.%a@."
79	abate	29	print_norm s;
80	abate	433	Format.fprintf ppf "which is not a subtype, as shown by the sample:@.%a@."
81	abate	423	print_sample (Sample.get (Types.diff s t))
82	abate	17	\| Typer.NonExhaustive t ->
83	abate	433	Format.fprintf ppf "This pattern matching is not exhaustive@.";
84			Format.fprintf ppf "Residual type:@.%a@."
85	abate	29	print_norm t;
86	abate	433	Format.fprintf ppf "Sample:@.%a@." print_sample (Sample.get t)
87	abate	656	\| Typer.UnboundId (x,tn) ->
88			Format.fprintf ppf "Unbound identifier %a%s@." U.print (Id.value x)
89			(if tn then " (it is a type name)" else "")
90	abate	81	\| Wlexer.Illegal_character c ->
91	abate	622	Format.fprintf ppf "Illegal character (%a)@." print_protect (Char.escaped c)
92	abate	81	\| Wlexer.Unterminated_comment ->
93	abate	433	Format.fprintf ppf "Comment not terminated@."
94	abate	81	\| Wlexer.Unterminated_string ->
95	abate	433	Format.fprintf ppf "String literal not terminated@."
96	abate	81	\| Wlexer.Unterminated_string_in_comment ->
97	abate	433	Format.fprintf ppf "This comment contains an unterminated string literal@."
98	abate	90	\| Parser.Error s \| Stream.Error s ->
99	abate	622	Format.fprintf ppf "Parsing error: %a@." print_protect s
100	abate	91	\| Location.Generic s ->
101	abate	622	Format.fprintf ppf "%a@." print_protect s
102	abate	10	\| exn ->
103	abate	403	(* raise exn *)
104	abate	622	Format.fprintf ppf "%a@." print_protect (Printexc.to_string exn)
105	abate	10
106	abate	90	let debug ppf = function
107	abate	224	\| `Subtype (t1,t2) ->
108	abate	433	Format.fprintf ppf "[DEBUG:subtype]@.";
109	abate	277	let t1 = Types.descr (Typer.typ t1)
110			and t2 = Types.descr (Typer.typ t2) in
111	abate	541	let s = Types.subtype t1 t2 in
112			Format.fprintf ppf "%a %a %a : %b@." print_norm t1 print_protect "<=" print_norm t2 s
113	abate	407	\| `Sample t ->
114	abate	433	Format.fprintf ppf "[DEBUG:sample]@.";
115			(try
116			let t = Types.descr (Typer.typ t) in
117			Format.fprintf ppf "%a@." print_sample (Sample.get t)
118			with Not_found ->
119			Format.fprintf ppf "Empty type : no sample !@.")
120	abate	43	\| `Filter (t,p) ->
121	abate	433	Format.fprintf ppf "[DEBUG:filter]@.";
122	abate	277	let t = Typer.typ t
123			and p = Typer.pat p in
124	abate	43	let f = Patterns.filter (Types.descr t) p in
125			List.iter (fun (x,t) ->
126	abate	433	Format.fprintf ppf " %a:%a@." U.print (Id.value x)
127	abate	43	print_norm (Types.descr t)) f
128			\| `Accept p ->
129	abate	433	Format.fprintf ppf "[DEBUG:accept]@.";
130	abate	277	let p = Typer.pat p in
131	abate	43	let t = Patterns.accept p in
132	abate	433	Format.fprintf ppf " %a@." Types.Print.print (Types.descr t)
133	abate	43	\| `Compile (t,pl) ->
134	abate	433	Format.fprintf ppf "[DEBUG:compile]@.";
135	abate	277	let t = Typer.typ t
136			and pl = List.map Typer.pat pl in
137	abate	149	Patterns.Compile.debug_compile ppf t pl
138	abate	66
139	abate	433	let insert_bindings ppf =
140			List.iter2
141			(fun (x,t) (y,v) ->
142			assert (x = y);
143	abate	431	typing_env := Env.add x t !typing_env;
144			eval_env := Env.add x v !eval_env;
145			if not !quiet then
146	abate	502	Format.fprintf ppf "val %a : @[@[%a@] =@ @[%a@]@]@."
147	abate	433	U.print (Id.value x) print_norm t print_value v)
148	abate	90
149	abate	431	let rec collect_funs ppf accu = function
150			\| { descr = Ast.FunDecl e } :: rest ->
151			let (_,e) = Typer.expr e in
152			collect_funs ppf (e::accu) rest
153			\| rest ->
154	abate	433	let typs = Typer.type_rec_funs !typing_env accu in
155	abate	431	Typer.report_unused_branches ();
156	abate	433	let vals = Eval.eval_rec_funs !eval_env accu in
157			insert_bindings ppf typs vals;
158	abate	431	rest
159	abate	10
160	abate	431	let rec collect_types ppf accu = function
161			\| { descr = Ast.TypeDecl (x,t) } :: rest ->
162			collect_types ppf ((x,t) :: accu) rest
163			\| rest ->
164			Typer.register_global_types accu;
165			rest
166	abate	66
167	abate	431	let rec phrases ppf phs = match phs with
168			\| { descr = Ast.FunDecl _ } :: _ ->
169			phrases ppf (collect_funs ppf [] phs)
170			\| { descr = Ast.TypeDecl (_,_) } :: _ ->
171			phrases ppf (collect_types ppf [] phs)
172	abate	501	\| { descr = Ast.SchemaDecl (name, schema) } :: rest ->
173			Typer.register_schema name schema;
174			phrases ppf rest
175	abate	529	\| { descr = Ast.Namespace (pr,ns) } :: rest ->
176	abate	552	Typer.register_global_ns pr ns;
177	abate	529	phrases ppf rest
178	abate	431	\| { descr = Ast.EvalStatement e } :: rest ->
179			let (fv,e) = Typer.expr e in
180			let t = Typer.type_check !typing_env e Types.any true in
181			Typer.report_unused_branches ();
182			if not !quiet then
183	abate	522	Location.dump_loc ppf (e.Typed.exp_loc,`Full);
184	abate	431	let v = Eval.eval !eval_env e in
185			if not !quiet then
186	abate	502	Format.fprintf ppf "- : @[@[%a@] =@ @[%a@]@]@." print_norm t print_value v;
187	abate	431	phrases ppf rest
188			\| { descr = Ast.LetDecl (p,e) } :: rest ->
189			let decl = Typer.let_decl p e in
190	abate	433	let typs = Typer.type_let_decl !typing_env decl in
191	abate	431	Typer.report_unused_branches ();
192	abate	433	let vals = Eval.eval_let_decl !eval_env decl in
193			insert_bindings ppf typs vals;
194	abate	431	phrases ppf rest
195			\| { descr = Ast.Debug l } :: rest ->
196	abate	541	debug ppf l;
197	abate	431	phrases ppf rest
198	abate	446	\| { descr = Ast.Directive `Quit } :: rest ->
199			if !toplevel then raise End_of_file;
200			phrases ppf rest
201			\| { descr = Ast.Directive `Env } :: rest ->
202			dump_env ppf;
203			phrases ppf rest
204	abate	553	\| { descr = Ast.Directive `Reinit_ns } :: rest ->
205			Typer.set_ns_table_for_printer ();
206			phrases ppf rest
207	abate	431	\| [] -> ()
208	abate	90
209	abate	431	let run rule ppf ppf_err input =
210	abate	637	Typer.clear_unused_branches ();
211	abate	13	try
212	abate	90	let p =
213	abate	431	try rule input
214	abate	90	with
215	abate	431	\| Stdpp.Exc_located (_, (Location _ as e)) ->
216	abate	495	Parser.sync (); raise e
217	abate	431	\| Stdpp.Exc_located ((i,j), e) ->
218	abate	495	Parser.sync (); raise_loc i j e
219	abate	90	in
220	abate	431	phrases ppf p;
221	abate	95	true
222	abate	28	with
223	abate	446	\| (End_of_file \| Failure _ \| Not_found \| Invalid_argument _ \| Sys.Break)
224			as e ->
225			raise e
226	abate	431	\| exn ->
227			print_exn ppf_err exn;
228			Format.fprintf ppf_err "@.";
229			false
230	abate	21
231	abate	431	let script = run Parser.prog
232	abate	446	let topinput = run Parser.top_phrases