viewcvs.cgi/driver/cduce.ml

open Location
open Ident

exception InvalidInputFilename of string
exception InvalidObjectFilename of string

(* if set to false toplevel exception aren't cought. 
 * Useful for debugging with OCAMLRUNPARAM="b" *)
let catch_exceptions = true

(* retuns a filename without the suffix suff if any *) 
let prefix filename suff =
  if Filename.check_suffix filename suff then
    try
      Filename.chop_extension filename
    with Invalid_argument filename -> failwith "Not a point in the suffix?"
  else filename

let toplevel = ref false
let verbose = ref false

let typing_env = State.ref "Cduce.typing_env" Builtin.env
let compile_env = State.ref "Cduce.compile_env" Compile.empty_toplevel

let get_global_value cenv v =
  Eval.var (Compile.find v !compile_env)

let get_global_type v =
  Typer.find_value v !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_value ppf x t v =
  Format.fprintf ppf "@[val %a : @[%a = %a@]@]@."
    U.print (Id.value x) print_norm t print_value v

let dump_env ppf tenv cenv =
  Format.fprintf ppf "Types:%a@." Typer.dump_types tenv;
  Format.fprintf ppf "Namespace prefixes:@\n%a" Typer.dump_ns tenv;
  Format.fprintf ppf "Namespace prefixes used for pretty-printing:@.%t"
    Ns.InternalPrinter.dump;
  Format.fprintf ppf "Schemas: %s@."
    (String.concat " " (List.map U.get_str (Typer.get_schema_names tenv)));
  Format.fprintf ppf "Values:@.";
  Typer.iter_values tenv
    (fun x t -> dump_value ppf x t (get_global_value cenv x))

let directive_help ppf =
  Format.fprintf ppf
"Toplevel directives:
  #quit;;                 quit the interpreter
  #env;;                  dump current environment
  #reinit_ns;;            reinitialize namespace processing
  #help;;                 shows this help message
  #dump_value <expr>;;    dump an XML-ish representation of the resulting
                          value of a given expression
  #print_schema <name>;;
  #print_type <name>;;
"

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
  | 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 "")
  | Typer.UnboundExtId (cu,x) ->
      Format.fprintf ppf "Unbound external identifier %a:%a@." 
        U.print (Types.CompUnit.value cu)
        U.print (Id.value x)
  | Ulexer.Error (i,j,s) ->
      let loc = Location.loc_of_pos (i,j), `Full in
      Format.fprintf ppf "Error %a:@." Location.print_loc loc;
      Format.fprintf ppf "%a%s" Location.html_hilight loc s
  | Parser.Error s | Stream.Error s -> 
      Format.fprintf ppf "Parsing error: %a@." print_protect s
  | Librarian.InconsistentCrc id ->
      Format.fprintf ppf "Link error:@.";
      let name = Encodings.Utf8.to_string (Types.CompUnit.value id) in
      Format.fprintf ppf "Inconsistent checksum (compilation unit: %s)@."
        name
  | Librarian.NoImplementation id ->
      Format.fprintf ppf "Link error:@.";
      let name = Encodings.Utf8.to_string (Types.CompUnit.value id) in
      Format.fprintf ppf "No implementation found for compilation unit: %s@."
        name
  | Librarian.Loop id ->
      Format.fprintf ppf "Compilation error:@.";
      let name = Encodings.Utf8.to_string (Types.CompUnit.value id) in
      Format.fprintf ppf "Loop between compilation unit (compilation unit: %s)@."
        name
  | InvalidInputFilename f ->
      Format.fprintf ppf "Compilation error:@.";
      Format.fprintf ppf "Source filename must have extension .cd@.";
  | InvalidObjectFilename f ->
      Format.fprintf ppf "Compilation error:@.";
      Format.fprintf ppf "Object filename must have extension .cdo and no path@.";
  | Librarian.InvalidObject f ->
      Format.fprintf ppf "Invalid object file %s@." f
  | Librarian.CannotOpen f ->
      Format.fprintf ppf "Cannot open file %s@." f
  | Location.Generic s ->
      Format.fprintf ppf "%a@." print_protect s
  | exn ->
(*      raise exn *)
      Format.fprintf ppf "%a@." print_protect (Printexc.to_string exn)


let eval_quiet tenv cenv e = 
  let (e,_) = Typer.type_expr tenv e in
  let e = Compile.compile_expr cenv e in 
  Eval.expr e

let debug ppf tenv cenv = function
  | `Subtype (t1,t2) ->
      Format.fprintf ppf "[DEBUG:subtype]@.";
      let t1 = Types.descr (Typer.typ tenv t1)
      and t2 = Types.descr (Typer.typ tenv 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 tenv t) in
         Format.fprintf ppf "%a@." print_sample (Sample.get t)
       with Not_found ->
         Format.fprintf ppf "Empty type : no sample !@.")
  | `Filter (t,p) -> 
      let t = Typer.typ tenv t
      and p = Typer.pat tenv p in
      Format.fprintf ppf "[DEBUG:filter t=%a p=%a]@."
        Types.Print.print (Types.descr t)
        Patterns.Print.print (Patterns.descr p);
      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 tenv 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 tenv t
      and pl = List.map (Typer.pat tenv) pl in
      Patterns.Compile.debug_compile ppf t pl
  | `Explain (t,e) ->
      Format.fprintf ppf "[DEBUG:explain]@.";
      let t = Typer.typ tenv t in
      (match Explain.explain (Types.descr t) (eval_quiet tenv cenv e) with
         | Some p ->
             Format.fprintf ppf "Explanation: @[%a@]@." 
               Explain.print_path p
         | None ->
             Format.fprintf ppf "Explanation: value has given type@.")
  | `Single t ->
      Format.fprintf ppf "[DEBUG:single]@.";
      let t = Typer.typ tenv t in
      (try 
         let c = Sample.single (Types.descr t) in
         Format.fprintf ppf "Constant:%a@." Types.Print.print_const c
       with
         | Exit -> Format.fprintf ppf "Non constant@." 
         | Not_found ->  Format.fprintf ppf "Empty@.")
  | `Approx (p,t) ->
      Format.fprintf ppf "[DEBUG:approx]@.";
      let t = Typer.typ tenv t in
      let p = Typer.pat tenv p in
      let (x,c) = Patterns.approx (Patterns.descr p) (Types.descr t) in
      List.iter (fun x -> Format.fprintf ppf "%a=* " U.print (Id.value x)) x;
      List.iter
        (fun (x,c) ->
           Format.fprintf ppf "%a=%a "
             U.print (Id.value x) 
             Types.Print.print_const c
        ) c;
      Format.fprintf ppf "@."


let flush_ppf ppf = Format.fprintf ppf "@."

let directive ppf tenv cenv = function
  | `Debug d ->
      debug ppf tenv cenv d
  | `Quit ->
      (if !toplevel then raise End_of_file)
  | `Env ->
      dump_env ppf tenv cenv
  | `Print_schema schema ->
      let uri = Typer.find_schema schema tenv in
      let sch = Typer.get_schema uri in
      Schema_common.print_schema ppf sch;
      flush_ppf ppf
  | `Print_type name ->
      Typer.dump_type ppf tenv name;
      flush_ppf ppf
  | `Print_schema_type schema_ref ->
      Typer.dump_schema_type ppf tenv schema_ref;
      flush_ppf ppf
  | `Reinit_ns ->
      Typer.set_ns_table_for_printer tenv
  | `Help ->
      directive_help ppf
  | `Dump pexpr ->
      Value.dump_xml ppf (eval_quiet tenv cenv pexpr);
      flush_ppf ppf

let print_id_opt ppf = function
  | None -> Format.fprintf ppf "-"
  | Some id -> Format.fprintf ppf "val %a" U.print (Id.value id)

let print_value_opt ppf = function
  | None -> ()
  | Some v -> Format.fprintf ppf " = %a" print_value v

let show ppf id t v =
  Format.fprintf ppf "@[%a : @[%a%a@]@]@."
    print_id_opt id 
    print_norm t 
    print_value_opt v

let phrases ppf phs =
  let (tenv,cenv,_) = 
    Compile.comp_unit 
      ~run:true ~show:(show ppf) 
      ~loading:Librarian.import_and_run
      ~directive:(directive ppf)
      !typing_env !compile_env phs in
  typing_env := tenv;
  compile_env := cenv

let catch_exn ppf_err exn =
  if not catch_exceptions then raise exn;
  match exn 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 "@."

let parse rule input =
  try Parser.localize_exn (fun () -> rule input)
  with e -> Parser.sync (); raise e

let run rule ppf ppf_err input =
  try phrases ppf (parse rule input); true
  with exn -> catch_exn ppf_err exn; false

let topinput = run Parser.top_phrases
let script = run Parser.prog


let compile src out_dir =
  try
    if not (Filename.check_suffix src ".cd")
    then raise (InvalidInputFilename src);
    let cu = Filename.chop_suffix (Filename.basename src) ".cd" in
    let out_dir = 
      match out_dir with
        | None -> Filename.dirname src
        | Some x -> x in
    let out = Filename.concat out_dir (cu ^ ".cdo") in
    let id = Types.CompUnit.mk (U.mk_latin1 cu) in
    Librarian.compile !verbose cu id src;
    Librarian.save cu id out;
    exit 0
  with exn -> catch_exn Format.err_formatter exn; exit 1
  
let compile_run src =
  try
    if not (Filename.check_suffix src ".cd")
    then raise (InvalidInputFilename src);
    let cu = Filename.chop_suffix (Filename.basename src) ".cd" in
    let id = Types.CompUnit.mk (U.mk_latin1 cu) in
    Librarian.compile !verbose cu id src;
    Librarian.run id
  with exn -> catch_exn Format.err_formatter exn; exit 1

let run obj =  
  try
    if not (Filename.check_suffix obj ".cdo") || (Filename.basename obj <> obj)
    then raise (InvalidObjectFilename obj);
    let cu = Filename.chop_suffix (Filename.basename obj) ".cdo" in
    let id = Types.CompUnit.mk (U.mk_latin1 cu) in
    Librarian.import_and_run id
  with exn -> catch_exn Format.err_formatter exn; exit 1


let dump_env ppf = dump_env ppf !typing_env !compile_env

let eval s =
  let st = Stream.of_string s in
  let phs = parse Parser.prog st in
  let vals = ref [] in
  let show id t v =
    match id,v with
      | Some id, Some v -> 
          let id = Id.value id in
          vals := (Some id,v) :: !vals
      | None, Some v ->
          vals := (None,v) :: !vals
      | _ -> assert false
  in
  let r () = 
    ignore (Compile.comp_unit 
              ~run:true ~show Builtin.env Compile.empty_toplevel phs) in
  Eval.new_stack r ();
  List.rev !vals
  
let eval s =
  try eval s
  with exn -> 
    let b = Buffer.create 1024 in
    let ppf = Format.formatter_of_buffer b in
    print_exn ppf exn;
    Format.fprintf ppf "@.";
    Value.failwith' (Buffer.contents b)
           

let () =        
  Operators.register_fun "eval_expr" Builtin_defs.string_latin1 Types.any
  (fun v ->
     match eval (Value.cduce2ocaml_string v) with
       | [ (None,v) ] -> v
       | _ -> Value.failwith' "eval: the string must evaluate to a single value"
  )

1	abate	10	open Location
2	abate	225	open Ident
3	abate	10
4	abate	723	exception InvalidInputFilename of string
5			exception InvalidObjectFilename of string
6
7	abate	924	(* if set to false toplevel exception aren't cought.
8			* Useful for debugging with OCAMLRUNPARAM="b" *)
9	abate	746	let catch_exceptions = true
10
11	abate	707	(* retuns a filename without the suffix suff if any *)
12			let prefix filename suff =
13			if Filename.check_suffix filename suff then
14			try
15			Filename.chop_extension filename
16			with Invalid_argument filename -> failwith "Not a point in the suffix?"
17			else filename
18
19	abate	446	let toplevel = ref false
20	abate	926	let verbose = ref false
21	abate	217
22	abate	686	let typing_env = State.ref "Cduce.typing_env" Builtin.env
23	abate	1097	let compile_env = State.ref "Cduce.compile_env" Compile.empty_toplevel
24	abate	431
25	abate	926	let get_global_value cenv v =
26	abate	924	Eval.var (Compile.find v !compile_env)
27	abate	692
28			let get_global_type v =
29			Typer.find_value v !typing_env
30
31	abate	332	let rec is_abstraction = function
32			\| Ast.Abstraction _ -> true
33			\| Ast.LocatedExpr (_,e) -> is_abstraction e
34			\| _ -> false
35
36	abate	29	let print_norm ppf d =
37	abate	92	Location.protect ppf
38	abate	367	(fun ppf -> Types.Print.print ppf ((Types.normalize) d))
39	abate	29
40	abate	423	let print_sample ppf s =
41			Location.protect ppf
42			(fun ppf -> Sample.print ppf s)
43
44	abate	541	let print_protect ppf s =
45			Location.protect ppf (fun ppf -> Format.fprintf ppf "%s" s)
46	abate	423
47	abate	92	let print_value ppf v =
48			Location.protect ppf (fun ppf -> Value.print ppf v)
49
50	abate	695	let dump_value ppf x t v =
51			Format.fprintf ppf "@[val %a : @[%a = %a@]@]@."
52			U.print (Id.value x) print_norm t print_value v
53
54	abate	926	let dump_env ppf tenv cenv =
55			Format.fprintf ppf "Types:%a@." Typer.dump_types tenv;
56			Format.fprintf ppf "Namespace prefixes:@\n%a" Typer.dump_ns tenv;
57	abate	553	Format.fprintf ppf "Namespace prefixes used for pretty-printing:@.%t"
58	abate	552	Ns.InternalPrinter.dump;
59	abate	788	Format.fprintf ppf "Schemas: %s@."
60	abate	1190	(String.concat " " (List.map U.get_str (Typer.get_schema_names tenv)));
61	abate	691	Format.fprintf ppf "Values:@.";
62	abate	926	Typer.iter_values tenv
63			(fun x t -> dump_value ppf x t (get_global_value cenv x))
64	abate	107
65	abate	702	let directive_help ppf =
66			Format.fprintf ppf
67			"Toplevel directives:
68	abate	788	#quit;; quit the interpreter
69			#env;; dump current environment
70			#reinit_ns;; reinitialize namespace processing
71			#help;; shows this help message
72			#dump_value <expr>;; dump an XML-ish representation of the resulting
73			value of a given expression
74			#print_schema <name>;;
75			#print_type <name>;;
76	abate	702	"
77
78	abate	10	let rec print_exn ppf = function
79	abate	522	\| Location (loc, w, exn) ->
80			Format.fprintf ppf "Error %a:@." Location.print_loc (loc,w);
81	abate	622	Format.fprintf ppf "%a" Location.html_hilight (loc,w);
82	abate	91	print_exn ppf exn
83	abate	64	\| Value.CDuceExn v ->
84	abate	433	Format.fprintf ppf "Uncaught CDuce exception: @[%a@]@."
85	abate	92	print_value v
86	abate	26	\| Typer.WrongLabel (t,l) ->
87	abate	529	Format.fprintf ppf "Wrong record selection; field %a "
88	abate	542	Label.print (LabelPool.value l);
89	abate	529	Format.fprintf ppf "not present in an expression of type:@.%a@."
90	abate	29	print_norm t
91	abate	19	\| Typer.ShouldHave (t,msg) ->
92	abate	622	Format.fprintf ppf "This expression should have type:@.%a@.%a@."
93	abate	29	print_norm t
94	abate	622	print_protect msg
95	abate	355	\| Typer.ShouldHave2 (t1,msg,t2) ->
96	abate	622	Format.fprintf ppf "This expression should have type:@.%a@.%a %a@."
97	abate	355	print_norm t1
98	abate	622	print_protect msg
99	abate	355	print_norm t2
100	abate	421	\| Typer.Error s ->
101	abate	622	Format.fprintf ppf "%a@." print_protect s
102	abate	421	\| Typer.Constraint (s,t) ->
103	abate	433	Format.fprintf ppf "This expression should have type:@.%a@."
104	abate	29	print_norm t;
105	abate	433	Format.fprintf ppf "but its inferred type is:@.%a@."
106	abate	29	print_norm s;
107	abate	433	Format.fprintf ppf "which is not a subtype, as shown by the sample:@.%a@."
108	abate	423	print_sample (Sample.get (Types.diff s t))
109	abate	17	\| Typer.NonExhaustive t ->
110	abate	433	Format.fprintf ppf "This pattern matching is not exhaustive@.";
111			Format.fprintf ppf "Residual type:@.%a@."
112	abate	29	print_norm t;
113	abate	433	Format.fprintf ppf "Sample:@.%a@." print_sample (Sample.get t)
114	abate	656	\| Typer.UnboundId (x,tn) ->
115			Format.fprintf ppf "Unbound identifier %a%s@." U.print (Id.value x)
116			(if tn then " (it is a type name)" else "")
117	abate	1096	\| Typer.UnboundExtId (cu,x) ->
118			Format.fprintf ppf "Unbound external identifier %a:%a@."
119			U.print (Types.CompUnit.value cu)
120			U.print (Id.value x)
121	abate	668	\| Ulexer.Error (i,j,s) ->
122			let loc = Location.loc_of_pos (i,j), `Full in
123			Format.fprintf ppf "Error %a:@." Location.print_loc loc;
124			Format.fprintf ppf "%a%s" Location.html_hilight loc s
125	abate	90	\| Parser.Error s \| Stream.Error s ->
126	abate	622	Format.fprintf ppf "Parsing error: %a@." print_protect s
127	abate	723	\| Librarian.InconsistentCrc id ->
128			Format.fprintf ppf "Link error:@.";
129			let name = Encodings.Utf8.to_string (Types.CompUnit.value id) in
130			Format.fprintf ppf "Inconsistent checksum (compilation unit: %s)@."
131			name
132			\| Librarian.NoImplementation id ->
133			Format.fprintf ppf "Link error:@.";
134			let name = Encodings.Utf8.to_string (Types.CompUnit.value id) in
135			Format.fprintf ppf "No implementation found for compilation unit: %s@."
136			name
137			\| Librarian.Loop id ->
138			Format.fprintf ppf "Compilation error:@.";
139			let name = Encodings.Utf8.to_string (Types.CompUnit.value id) in
140			Format.fprintf ppf "Loop between compilation unit (compilation unit: %s)@."
141			name
142			\| InvalidInputFilename f ->
143			Format.fprintf ppf "Compilation error:@.";
144			Format.fprintf ppf "Source filename must have extension .cd@.";
145			\| InvalidObjectFilename f ->
146			Format.fprintf ppf "Compilation error:@.";
147	abate	724	Format.fprintf ppf "Object filename must have extension .cdo and no path@.";
148	abate	723	\| Librarian.InvalidObject f ->
149			Format.fprintf ppf "Invalid object file %s@." f
150			\| Librarian.CannotOpen f ->
151			Format.fprintf ppf "Cannot open file %s@." f
152	abate	91	\| Location.Generic s ->
153	abate	622	Format.fprintf ppf "%a@." print_protect s
154	abate	10	\| exn ->
155	abate	403	(* raise exn *)
156	abate	622	Format.fprintf ppf "%a@." print_protect (Printexc.to_string exn)
157	abate	10
158	abate	694
159	abate	926	let eval_quiet tenv cenv e =
160			let (e,_) = Typer.type_expr tenv e in
161	abate	1097	let e = Compile.compile_expr cenv e in
162	abate	924	Eval.expr e
163
164	abate	926	let debug ppf tenv cenv = function
165	abate	224	\| `Subtype (t1,t2) ->
166	abate	433	Format.fprintf ppf "[DEBUG:subtype]@.";
167	abate	926	let t1 = Types.descr (Typer.typ tenv t1)
168			and t2 = Types.descr (Typer.typ tenv t2) in
169	abate	541	let s = Types.subtype t1 t2 in
170			Format.fprintf ppf "%a %a %a : %b@." print_norm t1 print_protect "<=" print_norm t2 s
171	abate	407	\| `Sample t ->
172	abate	433	Format.fprintf ppf "[DEBUG:sample]@.";
173			(try
174	abate	926	let t = Types.descr (Typer.typ tenv t) in
175	abate	433	Format.fprintf ppf "%a@." print_sample (Sample.get t)
176			with Not_found ->
177			Format.fprintf ppf "Empty type : no sample !@.")
178	abate	43	\| `Filter (t,p) ->
179	abate	926	let t = Typer.typ tenv t
180			and p = Typer.pat tenv p in
181	abate	1350	Format.fprintf ppf "[DEBUG:filter t=%a p=%a]@."
182			Types.Print.print (Types.descr t)
183			Patterns.Print.print (Patterns.descr p);
184	abate	43	let f = Patterns.filter (Types.descr t) p in
185			List.iter (fun (x,t) ->
186	abate	433	Format.fprintf ppf " %a:%a@." U.print (Id.value x)
187	abate	43	print_norm (Types.descr t)) f
188			\| `Accept p ->
189	abate	433	Format.fprintf ppf "[DEBUG:accept]@.";
190	abate	926	let p = Typer.pat tenv p in
191	abate	43	let t = Patterns.accept p in
192	abate	433	Format.fprintf ppf " %a@." Types.Print.print (Types.descr t)
193	abate	43	\| `Compile (t,pl) ->
194	abate	433	Format.fprintf ppf "[DEBUG:compile]@.";
195	abate	926	let t = Typer.typ tenv t
196			and pl = List.map (Typer.pat tenv) pl in
197	abate	149	Patterns.Compile.debug_compile ppf t pl
198	abate	694	\| `Explain (t,e) ->
199			Format.fprintf ppf "[DEBUG:explain]@.";
200	abate	926	let t = Typer.typ tenv t in
201			(match Explain.explain (Types.descr t) (eval_quiet tenv cenv e) with
202	abate	694	\| Some p ->
203			Format.fprintf ppf "Explanation: @[%a@]@."
204			Explain.print_path p
205			\| None ->
206			Format.fprintf ppf "Explanation: value has given type@.")
207	abate	1352	\| `Single t ->
208			Format.fprintf ppf "[DEBUG:single]@.";
209			let t = Typer.typ tenv t in
210			(try
211			let c = Sample.single (Types.descr t) in
212			Format.fprintf ppf "Constant:%a@." Types.Print.print_const c
213			with
214			\| Exit -> Format.fprintf ppf "Non constant@."
215			\| Not_found -> Format.fprintf ppf "Empty@.")
216			\| `Approx (p,t) ->
217			Format.fprintf ppf "[DEBUG:approx]@.";
218			let t = Typer.typ tenv t in
219			let p = Typer.pat tenv p in
220	abate	1354	let (x,c) = Patterns.approx (Patterns.descr p) (Types.descr t) in
221			List.iter (fun x -> Format.fprintf ppf "%a=* " U.print (Id.value x)) x;
222			List.iter
223	abate	1352	(fun (x,c) ->
224	abate	1354	Format.fprintf ppf "%a=%a "
225			U.print (Id.value x)
226			Types.Print.print_const c
227			) c;
228			Format.fprintf ppf "@."
229	abate	66
230	abate	695
231	abate	926	let flush_ppf ppf = Format.fprintf ppf "@."
232	abate	692
233	abate	926	let directive ppf tenv cenv = function
234			\| `Debug d ->
235			debug ppf tenv cenv d
236			\| `Quit ->
237			(if !toplevel then raise End_of_file)
238			\| `Env ->
239			dump_env ppf tenv cenv
240			\| `Print_schema schema ->
241	abate	1190	let uri = Typer.find_schema schema tenv in
242			let sch = Typer.get_schema uri in
243			Schema_common.print_schema ppf sch;
244	abate	926	flush_ppf ppf
245			\| `Print_type name ->
246			Typer.dump_type ppf tenv name;
247			flush_ppf ppf
248			\| `Print_schema_type schema_ref ->
249	abate	1190	Typer.dump_schema_type ppf tenv schema_ref;
250	abate	926	flush_ppf ppf
251			\| `Reinit_ns ->
252			Typer.set_ns_table_for_printer tenv
253			\| `Help ->
254			directive_help ppf
255			\| `Dump pexpr ->
256			Value.dump_xml ppf (eval_quiet tenv cenv pexpr);
257			flush_ppf ppf
258	abate	66
259	abate	926	let print_id_opt ppf = function
260			\| None -> Format.fprintf ppf "-"
261			\| Some id -> Format.fprintf ppf "val %a" U.print (Id.value id)
262	abate	694
263	abate	926	let print_value_opt ppf = function
264			\| None -> ()
265			\| Some v -> Format.fprintf ppf " = %a" print_value v
266	abate	90
267	abate	926	let show ppf id t v =
268			Format.fprintf ppf "@[%a : @[%a%a@]@]@."
269			print_id_opt id
270			print_norm t
271			print_value_opt v
272
273			let phrases ppf phs =
274			let (tenv,cenv,_) =
275			Compile.comp_unit
276			~run:true ~show:(show ppf)
277	abate	1097	~loading:Librarian.import_and_run
278	abate	926	~directive:(directive ppf)
279			!typing_env !compile_env phs in
280			typing_env := tenv;
281			compile_env := cenv
282
283	abate	746	let catch_exn ppf_err exn =
284			if not catch_exceptions then raise exn;
285			match exn with
286	abate	698	\| (End_of_file \| Failure _ \| Not_found \| Invalid_argument _ \| Sys.Break)
287			as e ->
288			raise e
289			\| exn ->
290			print_exn ppf_err exn;
291			Format.fprintf ppf_err "@."
292
293			let parse rule input =
294	abate	792	try Parser.localize_exn (fun () -> rule input)
295			with e -> Parser.sync (); raise e
296	abate	698
297	abate	431	let run rule ppf ppf_err input =
298	abate	792	try phrases ppf (parse rule input); true
299	abate	698	with exn -> catch_exn ppf_err exn; false
300	abate	21
301	abate	446	let topinput = run Parser.top_phrases
302	abate	1107	let script = run Parser.prog
303	abate	691
304	abate	1019
305	abate	723	let compile src out_dir =
306	abate	698	try
307	abate	723	if not (Filename.check_suffix src ".cd")
308			then raise (InvalidInputFilename src);
309			let cu = Filename.chop_suffix (Filename.basename src) ".cd" in
310			let out_dir =
311			match out_dir with
312			\| None -> Filename.dirname src
313			\| Some x -> x in
314			let out = Filename.concat out_dir (cu ^ ".cdo") in
315			let id = Types.CompUnit.mk (U.mk_latin1 cu) in
316	abate	1152	Librarian.compile !verbose cu id src;
317	abate	1162	Librarian.save cu id out;
318	abate	713	exit 0
319	abate	698	with exn -> catch_exn Format.err_formatter exn; exit 1
320
321	abate	1097	let compile_run src =
322	abate	713	try
323	abate	723	if not (Filename.check_suffix src ".cd")
324			then raise (InvalidInputFilename src);
325			let cu = Filename.chop_suffix (Filename.basename src) ".cd" in
326			let id = Types.CompUnit.mk (U.mk_latin1 cu) in
327	abate	1152	Librarian.compile !verbose cu id src;
328	abate	1097	Librarian.run id
329	abate	713	with exn -> catch_exn Format.err_formatter exn; exit 1
330	abate	698
331	abate	1097	let run obj =
332	abate	713	try
333	abate	724	if not (Filename.check_suffix obj ".cdo") \|\| (Filename.basename obj <> obj)
334	abate	723	then raise (InvalidObjectFilename obj);
335			let cu = Filename.chop_suffix (Filename.basename obj) ".cdo" in
336			let id = Types.CompUnit.mk (U.mk_latin1 cu) in
337	abate	1097	Librarian.import_and_run id
338	abate	713	with exn -> catch_exn Format.err_formatter exn; exit 1
339	abate	698
340	abate	926
341			let dump_env ppf = dump_env ppf !typing_env !compile_env
342	abate	1215
343			let eval s =
344			let st = Stream.of_string s in
345			let phs = parse Parser.prog st in
346			let vals = ref [] in
347			let show id t v =
348			match id,v with
349			\| Some id, Some v ->
350			let id = Id.value id in
351			vals := (Some id,v) :: !vals
352			\| None, Some v ->
353			vals := (None,v) :: !vals
354			\| _ -> assert false
355			in
356			let r () =
357			ignore (Compile.comp_unit
358			~run:true ~show Builtin.env Compile.empty_toplevel phs) in
359			Eval.new_stack r ();
360			List.rev !vals
361
362			let eval s =
363			try eval s
364			with exn ->
365			let b = Buffer.create 1024 in
366			let ppf = Format.formatter_of_buffer b in
367			print_exn ppf exn;
368			Format.fprintf ppf "@.";
369	abate	1237	Value.failwith' (Buffer.contents b)
370	abate	1239
371	abate	1215
372	abate	1239	let () =
373	abate	1238	Operators.register_fun "eval_expr" Builtin_defs.string_latin1 Types.any
374	abate	1239	(fun v ->
375			match eval (Value.cduce2ocaml_string v) with
376			\| [ (None,v) ] -> v
377			\| _ -> Value.failwith' "eval: the string must evaluate to a single value"
378			)
379	abate	1237