src/Tools/Code/code_target.ML
author haftmann
Thu Jul 08 16:41:57 2010 +0200 (2010-07-08)
changeset 37748 0af0d45257be
parent 37745 6315b6426200
child 37814 120c6e2d7474
permissions -rw-r--r--
dropped ancient in-place compilation of SML
     1 (*  Title:      Tools/Code/code_target.ML
     2     Author:     Florian Haftmann, TU Muenchen
     3 
     4 Serializer from intermediate language ("Thin-gol") to target languages.
     5 *)
     6 
     7 signature CODE_TARGET =
     8 sig
     9   val cert_tyco: theory -> string -> string
    10   val read_tyco: theory -> string -> string
    11 
    12   type serializer
    13   type literals = Code_Printer.literals
    14   val add_target: string * (serializer * literals) -> theory -> theory
    15   val extend_target: string *
    16       (string * (Code_Thingol.naming -> Code_Thingol.program -> Code_Thingol.program))
    17     -> theory -> theory
    18   val assert_target: theory -> string -> string
    19 
    20   type destination
    21   type serialization
    22   val parse_args: 'a parser -> Token.T list -> 'a
    23   val stmt_names_of_destination: destination -> string list
    24   val mk_serialization: string -> (Path.T option -> 'a -> unit)
    25     -> ('a -> string * string option list)
    26     -> 'a -> serialization
    27   val serialize: theory -> string -> int option -> string option -> Token.T list
    28     -> Code_Thingol.naming -> Code_Thingol.program -> string list -> serialization
    29   val serialize_custom: theory -> string * (serializer * literals)
    30     -> Code_Thingol.naming -> Code_Thingol.program -> string list -> string * string option list
    31   val the_literals: theory -> string -> literals
    32   val export: serialization -> unit
    33   val file: Path.T -> serialization -> unit
    34   val string: string list -> serialization -> string
    35   val code_of: theory -> string -> int option -> string
    36     -> string list -> (Code_Thingol.naming -> string list) -> string
    37   val external_check: theory -> string -> string
    38     -> (Path.T -> Path.T) -> (string -> Path.T -> string -> string) -> Path.T -> unit
    39   val set_default_code_width: int -> theory -> theory
    40   val shell_command: string (*theory name*) -> string (*export_code expr*) -> unit
    41 
    42   val allow_abort: string -> theory -> theory
    43   type tyco_syntax = Code_Printer.tyco_syntax
    44   type proto_const_syntax = Code_Printer.proto_const_syntax
    45   val add_syntax_class: string -> class -> string option -> theory -> theory
    46   val add_syntax_inst: string -> class * string -> unit option -> theory -> theory
    47   val add_syntax_tyco: string -> string -> tyco_syntax option -> theory -> theory
    48   val add_syntax_const: string -> string -> proto_const_syntax option -> theory -> theory
    49   val add_reserved: string -> string -> theory -> theory
    50   val add_include: string -> string * (string * string list) option -> theory -> theory
    51 end;
    52 
    53 structure Code_Target : CODE_TARGET =
    54 struct
    55 
    56 open Basic_Code_Thingol;
    57 
    58 type literals = Code_Printer.literals;
    59 type tyco_syntax = Code_Printer.tyco_syntax;
    60 type proto_const_syntax = Code_Printer.proto_const_syntax;
    61 
    62 
    63 (** basics **)
    64 
    65 datatype destination = Export | File of Path.T | String of string list;
    66 type serialization = destination -> (string * string option list) option;
    67 
    68 fun export f = (f Export; ());
    69 fun file p f = (f (File p); ());
    70 fun string stmts f = fst (the (f (String stmts)));
    71 
    72 fun stmt_names_of_destination (String stmts) = stmts
    73   | stmt_names_of_destination _ = [];
    74 
    75 fun mk_serialization target output _ code Export = (output NONE code ; NONE)
    76   | mk_serialization target output _ code (File file) = (output (SOME file) code; NONE)
    77   | mk_serialization target _ string code (String _) = SOME (string code);
    78 
    79 
    80 (** theory data **)
    81 
    82 datatype name_syntax_table = NameSyntaxTable of {
    83   class: string Symtab.table,
    84   instance: unit Symreltab.table,
    85   tyco: Code_Printer.tyco_syntax Symtab.table,
    86   const: Code_Printer.proto_const_syntax Symtab.table
    87 };
    88 
    89 fun mk_name_syntax_table ((class, instance), (tyco, const)) =
    90   NameSyntaxTable { class = class, instance = instance, tyco = tyco, const = const };
    91 fun map_name_syntax_table f (NameSyntaxTable { class, instance, tyco, const }) =
    92   mk_name_syntax_table (f ((class, instance), (tyco, const)));
    93 fun merge_name_syntax_table (NameSyntaxTable { class = class1, instance = instance1, tyco = tyco1, const = const1 },
    94     NameSyntaxTable { class = class2, instance = instance2, tyco = tyco2, const = const2 }) =
    95   mk_name_syntax_table (
    96     (Symtab.join (K snd) (class1, class2),
    97        Symreltab.join (K snd) (instance1, instance2)),
    98     (Symtab.join (K snd) (tyco1, tyco2),
    99        Symtab.join (K snd) (const1, const2))
   100   );
   101 
   102 type serializer =
   103   string option                         (*module name*)
   104   -> Token.T list                       (*arguments*)
   105   -> (string -> string)                 (*labelled_name*)
   106   -> string list                        (*reserved symbols*)
   107   -> (string * Pretty.T) list           (*includes*)
   108   -> (string -> string option)          (*module aliasses*)
   109   -> (string -> string option)          (*class syntax*)
   110   -> (string -> Code_Printer.tyco_syntax option)
   111   -> (string -> Code_Printer.const_syntax option)
   112   -> ((Pretty.T -> string) * (Pretty.T -> unit))
   113   -> Code_Thingol.program
   114   -> string list                        (*selected statements*)
   115   -> serialization;
   116 
   117 datatype serializer_entry = Serializer of serializer * Code_Printer.literals
   118   | Extends of string * (Code_Thingol.naming -> Code_Thingol.program -> Code_Thingol.program);
   119 
   120 datatype target = Target of {
   121   serial: serial,
   122   serializer: serializer_entry,
   123   reserved: string list,
   124   includes: (Pretty.T * string list) Symtab.table,
   125   name_syntax_table: name_syntax_table,
   126   module_alias: string Symtab.table
   127 };
   128 
   129 fun make_target ((serial, serializer), ((reserved, includes), (name_syntax_table, module_alias))) =
   130   Target { serial = serial, serializer = serializer, reserved = reserved, 
   131     includes = includes, name_syntax_table = name_syntax_table, module_alias = module_alias };
   132 fun map_target f ( Target { serial, serializer, reserved, includes, name_syntax_table, module_alias } ) =
   133   make_target (f ((serial, serializer), ((reserved, includes), (name_syntax_table, module_alias))));
   134 fun merge_target strict target (Target { serial = serial1, serializer = serializer,
   135   reserved = reserved1, includes = includes1,
   136   name_syntax_table = name_syntax_table1, module_alias = module_alias1 },
   137     Target { serial = serial2, serializer = _,
   138       reserved = reserved2, includes = includes2,
   139       name_syntax_table = name_syntax_table2, module_alias = module_alias2 }) =
   140   if serial1 = serial2 orelse not strict then
   141     make_target ((serial1, serializer),
   142       ((merge (op =) (reserved1, reserved2), Symtab.merge (K true) (includes1, includes2)),
   143         (merge_name_syntax_table (name_syntax_table1, name_syntax_table2),
   144           Symtab.join (K fst) (module_alias1, module_alias2))
   145     ))
   146   else
   147     error ("Incompatible serializers: " ^ quote target);
   148 
   149 fun the_serializer (Target { serializer, ... }) = serializer;
   150 fun the_reserved (Target { reserved, ... }) = reserved;
   151 fun the_includes (Target { includes, ... }) = includes;
   152 fun the_name_syntax (Target { name_syntax_table = NameSyntaxTable x, ... }) = x;
   153 fun the_module_alias (Target { module_alias , ... }) = module_alias;
   154 
   155 structure Targets = Theory_Data
   156 (
   157   type T = (target Symtab.table * string list) * int;
   158   val empty = ((Symtab.empty, []), 80);
   159   val extend = I;
   160   fun merge (((target1, exc1), width1), ((target2, exc2), width2)) : T =
   161     ((Symtab.join (merge_target true) (target1, target2),
   162       Library.merge (op =) (exc1, exc2)), Int.max (width1, width2));
   163 );
   164 
   165 val abort_allowed = snd o fst o Targets.get;
   166 
   167 fun assert_target thy target = if Symtab.defined ((fst o fst) (Targets.get thy)) target
   168   then target
   169   else error ("Unknown code target language: " ^ quote target);
   170 
   171 fun put_target (target, seri) thy =
   172   let
   173     val lookup_target = Symtab.lookup ((fst o fst) (Targets.get thy));
   174     val _ = case seri
   175      of Extends (super, _) => if is_some (lookup_target super) then ()
   176           else error ("Unknown code target language: " ^ quote super)
   177       | _ => ();
   178     val overwriting = case (Option.map the_serializer o lookup_target) target
   179      of NONE => false
   180       | SOME (Extends _) => true
   181       | SOME (Serializer _) => (case seri
   182          of Extends _ => error ("Will not overwrite existing target " ^ quote target)
   183           | _ => true);
   184     val _ = if overwriting
   185       then warning ("Overwriting existing target " ^ quote target)
   186       else (); 
   187   in
   188     thy
   189     |> (Targets.map o apfst o apfst o Symtab.update)
   190           (target, make_target ((serial (), seri), (([], Symtab.empty),
   191             (mk_name_syntax_table ((Symtab.empty, Symreltab.empty), (Symtab.empty, Symtab.empty)),
   192               Symtab.empty))))
   193   end;
   194 
   195 fun add_target (target, seri) = put_target (target, Serializer seri);
   196 fun extend_target (target, (super, modify)) =
   197   put_target (target, Extends (super, modify));
   198 
   199 fun map_target_data target f thy =
   200   let
   201     val _ = assert_target thy target;
   202   in
   203     thy
   204     |> (Targets.map o apfst o apfst o Symtab.map_entry target o map_target) f
   205   end;
   206 
   207 fun map_reserved target =
   208   map_target_data target o apsnd o apfst o apfst;
   209 fun map_includes target =
   210   map_target_data target o apsnd o apfst o apsnd;
   211 fun map_name_syntax target =
   212   map_target_data target o apsnd o apsnd o apfst o map_name_syntax_table;
   213 fun map_module_alias target =
   214   map_target_data target o apsnd o apsnd o apsnd;
   215 
   216 fun set_default_code_width k = (Targets.map o apsnd) (K k);
   217 
   218 
   219 (** serializer usage **)
   220 
   221 (* montage *)
   222 
   223 fun the_literals thy =
   224   let
   225     val ((targets, _), _) = Targets.get thy;
   226     fun literals target = case Symtab.lookup targets target
   227      of SOME data => (case the_serializer data
   228          of Serializer (_, literals) => literals
   229           | Extends (super, _) => literals super)
   230       | NONE => error ("Unknown code target language: " ^ quote target);
   231   in literals end;
   232 
   233 local
   234 
   235 fun activate_syntax lookup_name src_tab = Symtab.empty
   236   |> fold_map (fn thing_identifier => fn tab => case lookup_name thing_identifier
   237        of SOME name => (SOME name,
   238             Symtab.update_new (name, the (Symtab.lookup src_tab thing_identifier)) tab)
   239         | NONE => (NONE, tab)) (Symtab.keys src_tab)
   240   |>> map_filter I;
   241 
   242 fun activate_const_syntax thy literals src_tab naming = (Symtab.empty, naming)
   243   |> fold_map (fn thing_identifier => fn (tab, naming) =>
   244       case Code_Thingol.lookup_const naming thing_identifier
   245        of SOME name => let
   246               val (syn, naming') = Code_Printer.activate_const_syntax thy
   247                 literals (the (Symtab.lookup src_tab thing_identifier)) naming
   248             in (SOME name, (Symtab.update_new (name, syn) tab, naming')) end
   249         | NONE => (NONE, (tab, naming))) (Symtab.keys src_tab)
   250   |>> map_filter I;
   251 
   252 fun invoke_serializer thy abortable serializer literals reserved abs_includes 
   253     module_alias class instance tyco const module width args naming program2 names1 =
   254   let
   255     val (names_class, class') =
   256       activate_syntax (Code_Thingol.lookup_class naming) class;
   257     val names_inst = map_filter (Code_Thingol.lookup_instance naming)
   258       (Symreltab.keys instance);
   259     val (names_tyco, tyco') =
   260       activate_syntax (Code_Thingol.lookup_tyco naming) tyco;
   261     val (names_const, (const', _)) =
   262       activate_const_syntax thy literals const naming;
   263     val names_hidden = names_class @ names_inst @ names_tyco @ names_const;
   264     val names2 = subtract (op =) names_hidden names1;
   265     val program3 = Graph.subgraph (not o member (op =) names_hidden) program2;
   266     val names_all = Graph.all_succs program3 names2;
   267     val includes = abs_includes names_all;
   268     val program4 = Graph.subgraph (member (op =) names_all) program3;
   269     val empty_funs = filter_out (member (op =) abortable)
   270       (Code_Thingol.empty_funs program3);
   271     val _ = if null empty_funs then () else error ("No code equations for "
   272       ^ commas (map (Sign.extern_const thy) empty_funs));
   273   in
   274     serializer module args (Code_Thingol.labelled_name thy program2) reserved includes
   275       (Symtab.lookup module_alias) (Symtab.lookup class')
   276       (Symtab.lookup tyco') (Symtab.lookup const')
   277       (Code_Printer.string_of_pretty width, Code_Printer.writeln_pretty width)
   278       program4 names1
   279   end;
   280 
   281 fun mount_serializer thy alt_serializer target some_width module args naming program names =
   282   let
   283     val ((targets, abortable), default_width) = Targets.get thy;
   284     fun collapse_hierarchy target =
   285       let
   286         val data = case Symtab.lookup targets target
   287          of SOME data => data
   288           | NONE => error ("Unknown code target language: " ^ quote target);
   289       in case the_serializer data
   290        of Serializer _ => (I, data)
   291         | Extends (super, modify) => let
   292             val (modify', data') = collapse_hierarchy super
   293           in (modify' #> modify naming, merge_target false target (data', data)) end
   294       end;
   295     val (modify, data) = collapse_hierarchy target;
   296     val (serializer, _) = the_default (case the_serializer data
   297      of Serializer seri => seri) alt_serializer;
   298     val reserved = the_reserved data;
   299     fun select_include names_all (name, (content, cs)) =
   300       if null cs then SOME (name, content)
   301       else if exists (fn c => case Code_Thingol.lookup_const naming c
   302        of SOME name => member (op =) names_all name
   303         | NONE => false) cs
   304       then SOME (name, content) else NONE;
   305     fun includes names_all = map_filter (select_include names_all)
   306       ((Symtab.dest o the_includes) data);
   307     val module_alias = the_module_alias data;
   308     val { class, instance, tyco, const } = the_name_syntax data;
   309     val literals = the_literals thy target;
   310     val width = the_default default_width some_width;
   311   in
   312     invoke_serializer thy abortable serializer literals reserved
   313       includes module_alias class instance tyco const module width args naming (modify program) names
   314   end;
   315 
   316 in
   317 
   318 fun serialize thy = mount_serializer thy NONE;
   319 
   320 fun serialize_custom thy (target_name, seri) naming program names =
   321   mount_serializer thy (SOME seri) target_name NONE NONE [] naming program names (String [])
   322   |> the;
   323 
   324 end; (* local *)
   325 
   326 
   327 (* code presentation *)
   328 
   329 fun code_of thy target some_width module_name cs names_stmt =
   330   let
   331     val (names_cs, (naming, program)) = Code_Thingol.consts_program thy false cs;
   332   in
   333     string (names_stmt naming)
   334       (serialize thy target some_width (SOME module_name) [] naming program names_cs)
   335   end;
   336 
   337 
   338 (* code generation *)
   339 
   340 fun transitivly_non_empty_funs thy naming program =
   341   let
   342     val cs = subtract (op =) (abort_allowed thy) (Code_Thingol.empty_funs program);
   343     val names = map_filter (Code_Thingol.lookup_const naming) cs;
   344   in subtract (op =) (Graph.all_preds program names) (Graph.keys program) end;
   345 
   346 fun read_const_exprs thy cs =
   347   let
   348     val (cs1, cs2) = Code_Thingol.read_const_exprs thy cs;
   349     val (names2, (naming, program)) = Code_Thingol.consts_program thy true cs2;
   350     val names3 = transitivly_non_empty_funs thy naming program;
   351     val cs3 = map_filter (fn (c, name) =>
   352       if member (op =) names3 name then SOME c else NONE) (cs2 ~~ names2);
   353   in union (op =) cs3 cs1 end;
   354 
   355 fun external_check thy target env_var make_destination make_command p =
   356   let
   357     val env_param = getenv env_var;
   358     fun ext_check env_param =
   359       let 
   360         val module_name = "Code_Test";
   361         val (cs, (naming, program)) =
   362           Code_Thingol.consts_program thy false (read_const_exprs thy ["*"]);
   363         val destination = make_destination p;
   364         val _ = file destination (serialize thy target (SOME 80)
   365           (SOME module_name) [] naming program cs);
   366         val cmd = make_command env_param destination module_name;
   367       in if bash ("cd " ^ File.shell_path p ^ " && " ^ cmd) <> 0
   368         then error ("Code check failed for " ^ target ^ ": " ^ cmd)
   369         else ()
   370       end;
   371   in if env_param = ""
   372     then warning (env_var ^ " not set; skipped code check for " ^ target)
   373     else ext_check env_param
   374   end;
   375 
   376 fun export_code thy cs seris =
   377   let
   378     val (cs', (naming, program)) = Code_Thingol.consts_program thy false cs;
   379     fun mk_seri_dest dest = case dest
   380      of "-" => export
   381       | f => file (Path.explode f)
   382     val _ = map (fn (((target, module), dest), args) =>
   383       (mk_seri_dest dest (serialize thy target NONE module args naming program cs'))) seris;
   384   in () end;
   385 
   386 fun export_code_cmd raw_cs seris thy = export_code thy (read_const_exprs thy raw_cs) seris;
   387 
   388 
   389 (** serializer configuration **)
   390 
   391 (* data access *)
   392 
   393 fun cert_class thy class =
   394   let
   395     val _ = AxClass.get_info thy class;
   396   in class end;
   397 
   398 fun read_class thy = cert_class thy o Sign.intern_class thy;
   399 
   400 fun cert_tyco thy tyco =
   401   let
   402     val _ = if Sign.declared_tyname thy tyco then ()
   403       else error ("No such type constructor: " ^ quote tyco);
   404   in tyco end;
   405 
   406 fun read_tyco thy = cert_tyco thy o Sign.intern_type thy;
   407 
   408 fun cert_inst thy (class, tyco) =
   409   (cert_class thy class, cert_tyco thy tyco);
   410 
   411 fun read_inst thy (raw_tyco, raw_class) =
   412   (read_class thy raw_class, read_tyco thy raw_tyco);
   413 
   414 fun gen_add_syntax upd del mapp check_x check_raw_syn prep_syn prep_x target raw_x some_raw_syn thy =
   415   let
   416     val x = prep_x thy raw_x |> tap (check_x thy);
   417     fun prep_check raw_syn = prep_syn (raw_syn |> tap (check_raw_syn thy target));
   418   in case some_raw_syn
   419    of SOME raw_syn => (map_name_syntax target o mapp) (upd (x, prep_check raw_syn)) thy
   420     | NONE => (map_name_syntax target o mapp) (del x) thy
   421   end;
   422 
   423 fun gen_add_syntax_class prep_class =
   424   gen_add_syntax Symtab.update Symtab.delete_safe (apfst o apfst) (K I) ((K o K o K) ()) I prep_class;
   425 
   426 fun gen_add_syntax_inst prep_inst =
   427   gen_add_syntax Symreltab.update Symreltab.delete_safe (apfst o apsnd) (K I) ((K o K o K) ()) I prep_inst;
   428 
   429 fun gen_add_syntax_tyco prep_tyco =
   430   gen_add_syntax Symtab.update Symtab.delete_safe (apsnd o apfst)
   431     (fn thy => fn tyco => fn (n, _) => if n <> Sign.arity_number thy tyco
   432       then error ("Number of arguments mismatch in syntax for type constructor " ^ quote tyco)
   433       else ()) ((K o K o K) ()) I prep_tyco;
   434 
   435 fun gen_add_syntax_const prep_const check_raw_syn prep_syn =
   436   gen_add_syntax Symtab.update Symtab.delete_safe (apsnd o apsnd)
   437     (fn thy => fn c => fn (n, _) => if n > Code.args_number thy c
   438       then error ("Too many arguments in syntax for constant " ^ quote c)
   439       else ()) check_raw_syn prep_syn prep_const;
   440 
   441 fun add_reserved target =
   442   let
   443     fun add sym syms = if member (op =) syms sym
   444       then error ("Reserved symbol " ^ quote sym ^ " already declared")
   445       else insert (op =) sym syms
   446   in map_reserved target o add end;
   447 
   448 fun gen_add_include read_const target args thy =
   449   let
   450     fun add (name, SOME (content, raw_cs)) incls =
   451           let
   452             val _ = if Symtab.defined incls name
   453               then warning ("Overwriting existing include " ^ name)
   454               else ();
   455             val cs = map (read_const thy) raw_cs;
   456           in Symtab.update (name, (Code_Printer.str content, cs)) incls end
   457       | add (name, NONE) incls = Symtab.delete name incls;
   458   in map_includes target (add args) thy end;
   459 
   460 val add_include = gen_add_include (K I);
   461 val add_include_cmd = gen_add_include Code.read_const;
   462 
   463 fun add_module_alias target (thyname, modlname) =
   464   let
   465     val xs = Long_Name.explode modlname;
   466     val xs' = map (Name.desymbolize true) xs;
   467   in if xs' = xs
   468     then map_module_alias target (Symtab.update (thyname, modlname))
   469     else error ("Invalid module name: " ^ quote modlname ^ "\n"
   470       ^ "perhaps try " ^ quote (Long_Name.implode xs'))
   471   end;
   472 
   473 fun gen_allow_abort prep_const raw_c thy =
   474   let
   475     val c = prep_const thy raw_c;
   476   in thy |> (Targets.map o apfst o apsnd) (insert (op =) c) end;
   477 
   478 
   479 (* concrete syntax *)
   480 
   481 local
   482 
   483 fun zip_list (x::xs) f g =
   484   f
   485   #-> (fn y =>
   486     fold_map (fn x => g |-- f >> pair x) xs
   487     #-> (fn xys => pair ((x, y) :: xys)));
   488 
   489 fun parse_multi_syntax parse_thing parse_syntax =
   490   Parse.and_list1 parse_thing
   491   #-> (fn things => Scan.repeat1 (Parse.$$$ "(" |-- Parse.name --
   492         (zip_list things parse_syntax (Parse.$$$ "and")) --| Parse.$$$ ")"));
   493 
   494 in
   495 
   496 val add_syntax_class = gen_add_syntax_class cert_class;
   497 val add_syntax_inst = gen_add_syntax_inst cert_inst;
   498 val add_syntax_tyco = gen_add_syntax_tyco cert_tyco;
   499 val add_syntax_const_simple = gen_add_syntax_const (K I) ((K o K o K) ()) Code_Printer.simple_const_syntax;
   500 val add_syntax_const = gen_add_syntax_const (K I) ((K o K o K) ()) I;
   501 val allow_abort = gen_allow_abort (K I);
   502 val add_reserved = add_reserved;
   503 val add_include = add_include;
   504 
   505 val add_syntax_class_cmd = gen_add_syntax_class read_class;
   506 val add_syntax_inst_cmd = gen_add_syntax_inst read_inst;
   507 val add_syntax_tyco_cmd = gen_add_syntax_tyco read_tyco;
   508 val add_syntax_const_simple_cmd = gen_add_syntax_const Code.read_const ((K o K o K) ()) Code_Printer.simple_const_syntax;
   509 val add_syntax_const_cmd = gen_add_syntax_const Code.read_const ((K o K o K) ()) I;
   510 
   511 val allow_abort_cmd = gen_allow_abort Code.read_const;
   512 
   513 fun parse_args f args =
   514   case Scan.read Token.stopper f args
   515    of SOME x => x
   516     | NONE => error "Bad serializer arguments";
   517 
   518 
   519 (** Isar setup **)
   520 
   521 val (inK, module_nameK, fileK) = ("in", "module_name", "file");
   522 
   523 val code_exprP =
   524   (Scan.repeat1 Parse.term_group
   525   -- Scan.repeat (Parse.$$$ inK |-- Parse.name
   526      -- Scan.option (Parse.$$$ module_nameK |-- Parse.name)
   527      --| Parse.$$$ fileK -- Parse.name
   528      -- Scan.optional (Parse.$$$ "(" |-- Args.parse --| Parse.$$$ ")") []
   529   ) >> (fn (raw_cs, seris) => export_code_cmd raw_cs seris));
   530 
   531 val _ = List.app Keyword.keyword [inK, module_nameK, fileK];
   532 
   533 val _ =
   534   Outer_Syntax.command "code_class" "define code syntax for class" Keyword.thy_decl (
   535     parse_multi_syntax Parse.xname (Scan.option Parse.string)
   536     >> (Toplevel.theory oo fold) (fn (target, syns) =>
   537           fold (fn (raw_class, syn) => add_syntax_class_cmd target raw_class syn) syns)
   538   );
   539 
   540 val _ =
   541   Outer_Syntax.command "code_instance" "define code syntax for instance" Keyword.thy_decl (
   542     parse_multi_syntax (Parse.xname --| Parse.$$$ "::" -- Parse.xname)
   543       (Scan.option (Parse.minus >> K ()))
   544     >> (Toplevel.theory oo fold) (fn (target, syns) =>
   545           fold (fn (raw_inst, add_del) => add_syntax_inst_cmd target raw_inst add_del) syns)
   546   );
   547 
   548 val _ =
   549   Outer_Syntax.command "code_type" "define code syntax for type constructor" Keyword.thy_decl (
   550     parse_multi_syntax Parse.xname (Code_Printer.parse_syntax I)
   551     >> (Toplevel.theory oo fold) (fn (target, syns) =>
   552           fold (fn (raw_tyco, syn) => add_syntax_tyco_cmd target raw_tyco syn) syns)
   553   );
   554 
   555 val _ =
   556   Outer_Syntax.command "code_const" "define code syntax for constant" Keyword.thy_decl (
   557     parse_multi_syntax Parse.term_group (Code_Printer.parse_syntax fst)
   558     >> (Toplevel.theory oo fold) (fn (target, syns) =>
   559       fold (fn (raw_const, syn) => add_syntax_const_simple_cmd target raw_const syn) syns)
   560   );
   561 
   562 val _ =
   563   Outer_Syntax.command "code_reserved" "declare words as reserved for target language"
   564     Keyword.thy_decl (
   565     Parse.name -- Scan.repeat1 Parse.name
   566     >> (fn (target, reserveds) => (Toplevel.theory o fold (add_reserved target)) reserveds)
   567   );
   568 
   569 val _ =
   570   Outer_Syntax.command "code_include" "declare piece of code to be included in generated code"
   571     Keyword.thy_decl (
   572     Parse.name -- Parse.name -- (Parse.text :|-- (fn "-" => Scan.succeed NONE
   573       | s => Scan.optional (Parse.$$$ "attach" |-- Scan.repeat1 Parse.term) [] >> pair s >> SOME))
   574     >> (fn ((target, name), content_consts) =>
   575         (Toplevel.theory o add_include_cmd target) (name, content_consts))
   576   );
   577 
   578 val _ =
   579   Outer_Syntax.command "code_modulename" "alias module to other name" Keyword.thy_decl (
   580     Parse.name -- Scan.repeat1 (Parse.name -- Parse.name)
   581     >> (fn (target, modlnames) => (Toplevel.theory o fold (add_module_alias target)) modlnames)
   582   );
   583 
   584 val _ =
   585   Outer_Syntax.command "code_abort" "permit constant to be implemented as program abort"
   586     Keyword.thy_decl (
   587     Scan.repeat1 Parse.term_group >> (Toplevel.theory o fold allow_abort_cmd)
   588   );
   589 
   590 val _ =
   591   Outer_Syntax.command "export_code" "generate executable code for constants"
   592     Keyword.diag (Parse.!!! code_exprP >> (fn f => Toplevel.keep (f o Toplevel.theory_of)));
   593 
   594 fun shell_command thyname cmd = Toplevel.program (fn _ =>
   595   (use_thy thyname; case Scan.read Token.stopper (Parse.!!! code_exprP)
   596     ((filter Token.is_proper o Outer_Syntax.scan Position.none) cmd)
   597    of SOME f => (writeln "Now generating code..."; f (theory thyname))
   598     | NONE => error ("Bad directive " ^ quote cmd)))
   599   handle Runtime.TOPLEVEL_ERROR => OS.Process.exit OS.Process.failure;
   600 
   601 end; (*local*)
   602 
   603 end; (*struct*)