src/Tools/code/code_target.ML
author haftmann
Mon Dec 01 12:17:04 2008 +0100 (2008-12-01)
changeset 28926 530b83967c82
parent 28690 fc51fa5efea1
child 30024 5e9d471afef3
child 30240 5b25fee0362c
permissions -rw-r--r--
code_include with attach
     1 (*  Title:      Tools/code/code_target.ML
     2     ID:         $Id$
     3     Author:     Florian Haftmann, TU Muenchen
     4 
     5 Serializer from intermediate language ("Thin-gol") to target languages.
     6 *)
     7 
     8 signature CODE_TARGET =
     9 sig
    10   include CODE_PRINTER
    11 
    12   type serializer
    13   val add_target: string * (serializer * literals) -> theory -> theory
    14   val extend_target: string *
    15       (string * (Code_Thingol.naming -> Code_Thingol.program -> Code_Thingol.program))
    16     -> theory -> theory
    17   val assert_target: theory -> string -> string
    18 
    19   type destination
    20   type serialization
    21   val parse_args: (OuterLex.token list -> 'a * OuterLex.token list)
    22     -> OuterLex.token list -> 'a
    23   val stmt_names_of_destination: destination -> string list
    24   val code_of_pretty: Pretty.T -> string
    25   val code_writeln: Pretty.T -> unit
    26   val mk_serialization: string -> ('a -> unit) option
    27     -> (Path.T option -> 'a -> unit)
    28     -> ('a -> string * string option list)
    29     -> 'a -> serialization
    30   val serialize: theory -> string -> string option -> Args.T list
    31     -> Code_Thingol.naming -> Code_Thingol.program -> string list -> serialization
    32   val serialize_custom: theory -> string * (serializer * literals)
    33     -> Code_Thingol.naming -> Code_Thingol.program -> string list -> string * string option list
    34   val the_literals: theory -> string -> literals
    35   val compile: serialization -> unit
    36   val export: serialization -> unit
    37   val file: Path.T -> serialization -> unit
    38   val string: string list -> serialization -> string
    39   val code_of: theory -> string -> string
    40     -> string list -> (Code_Thingol.naming -> string list) -> string
    41   val code_width: int ref
    42 
    43   val allow_abort: string -> theory -> theory
    44   val add_syntax_class: string -> class -> string option -> theory -> theory
    45   val add_syntax_inst: string -> string * class -> bool -> theory -> theory
    46   val add_syntax_tyco: string -> string -> tyco_syntax option -> theory -> theory
    47   val add_syntax_const: string -> string -> const_syntax option -> theory -> theory
    48   val add_reserved: string -> string -> theory -> theory
    49 end;
    50 
    51 structure Code_Target : CODE_TARGET =
    52 struct
    53 
    54 open Basic_Code_Thingol;
    55 open Code_Printer;
    56 
    57 (** basics **)
    58 
    59 datatype destination = Compile | Export | File of Path.T | String of string list;
    60 type serialization = destination -> (string * string option list) option;
    61 
    62 val code_width = ref 80; (*FIXME after Pretty module no longer depends on print mode*)
    63 fun code_setmp f = PrintMode.setmp [] (Pretty.setmp_margin (!code_width) f);
    64 fun code_of_pretty p = code_setmp Pretty.string_of p ^ "\n";
    65 fun code_writeln p = Pretty.setmp_margin (!code_width) Pretty.writeln p;
    66 
    67 (*FIXME why another code_setmp?*)
    68 fun compile f = (code_setmp f Compile; ());
    69 fun export f = (code_setmp f Export; ());
    70 fun file p f = (code_setmp f (File p); ());
    71 fun string cs f = fst (the (code_setmp f (String cs)));
    72 
    73 fun stmt_names_of_destination (String stmts) = stmts
    74   | stmt_names_of_destination _ = [];
    75 
    76 fun mk_serialization target (SOME comp) _ _ code Compile = (comp code; NONE)
    77   | mk_serialization target NONE _ _ _ Compile = error (target ^ ": no internal compilation")
    78   | mk_serialization target _ output _ code Export = (output NONE code ; NONE)
    79   | mk_serialization target _ output _ code (File file) = (output (SOME file) code; NONE)
    80   | mk_serialization target _ _ string code (String _) = SOME (string code);
    81 
    82 
    83 (** theory data **)
    84 
    85 structure StringPairTab = Code_Name.StringPairTab;
    86 
    87 datatype name_syntax_table = NameSyntaxTable of {
    88   class: string Symtab.table,
    89   instance: unit StringPairTab.table,
    90   tyco: tyco_syntax Symtab.table,
    91   const: const_syntax Symtab.table
    92 };
    93 
    94 fun mk_name_syntax_table ((class, instance), (tyco, const)) =
    95   NameSyntaxTable { class = class, instance = instance, tyco = tyco, const = const };
    96 fun map_name_syntax_table f (NameSyntaxTable { class, instance, tyco, const }) =
    97   mk_name_syntax_table (f ((class, instance), (tyco, const)));
    98 fun merge_name_syntax_table (NameSyntaxTable { class = class1, instance = instance1, tyco = tyco1, const = const1 },
    99     NameSyntaxTable { class = class2, instance = instance2, tyco = tyco2, const = const2 }) =
   100   mk_name_syntax_table (
   101     (Symtab.join (K snd) (class1, class2),
   102        StringPairTab.join (K snd) (instance1, instance2)),
   103     (Symtab.join (K snd) (tyco1, tyco2),
   104        Symtab.join (K snd) (const1, const2))
   105   );
   106 
   107 type serializer =
   108   string option                         (*module name*)
   109   -> Args.T list                        (*arguments*)
   110   -> (string -> string)                 (*labelled_name*)
   111   -> string list                        (*reserved symbols*)
   112   -> (string * Pretty.T) list           (*includes*)
   113   -> (string -> string option)          (*module aliasses*)
   114   -> (string -> string option)          (*class syntax*)
   115   -> (string -> tyco_syntax option)
   116   -> (string -> const_syntax option)
   117   -> Code_Thingol.naming
   118   -> Code_Thingol.program
   119   -> string list                        (*selected statements*)
   120   -> serialization;
   121 
   122 datatype serializer_entry = Serializer of serializer * literals
   123   | Extends of string * (Code_Thingol.naming -> Code_Thingol.program -> Code_Thingol.program);
   124 
   125 datatype target = Target of {
   126   serial: serial,
   127   serializer: serializer_entry,
   128   reserved: string list,
   129   includes: (Pretty.T * string list) Symtab.table,
   130   name_syntax_table: name_syntax_table,
   131   module_alias: string Symtab.table
   132 };
   133 
   134 fun mk_target ((serial, serializer), ((reserved, includes), (name_syntax_table, module_alias))) =
   135   Target { serial = serial, serializer = serializer, reserved = reserved, 
   136     includes = includes, name_syntax_table = name_syntax_table, module_alias = module_alias };
   137 fun map_target f ( Target { serial, serializer, reserved, includes, name_syntax_table, module_alias } ) =
   138   mk_target (f ((serial, serializer), ((reserved, includes), (name_syntax_table, module_alias))));
   139 fun merge_target strict target (Target { serial = serial1, serializer = serializer,
   140   reserved = reserved1, includes = includes1,
   141   name_syntax_table = name_syntax_table1, module_alias = module_alias1 },
   142     Target { serial = serial2, serializer = _,
   143       reserved = reserved2, includes = includes2,
   144       name_syntax_table = name_syntax_table2, module_alias = module_alias2 }) =
   145   if serial1 = serial2 orelse not strict then
   146     mk_target ((serial1, serializer),
   147       ((merge (op =) (reserved1, reserved2), Symtab.merge (op =) (includes1, includes2)),
   148         (merge_name_syntax_table (name_syntax_table1, name_syntax_table2),
   149           Symtab.join (K snd) (module_alias1, module_alias2))
   150     ))
   151   else
   152     error ("Incompatible serializers: " ^ quote target);
   153 
   154 structure CodeTargetData = TheoryDataFun
   155 (
   156   type T = target Symtab.table * string list;
   157   val empty = (Symtab.empty, []);
   158   val copy = I;
   159   val extend = I;
   160   fun merge _ ((target1, exc1) : T, (target2, exc2)) =
   161     (Symtab.join (merge_target true) (target1, target2), Library.merge (op =) (exc1, exc2));
   162 );
   163 
   164 fun the_serializer (Target { serializer, ... }) = serializer;
   165 fun the_reserved (Target { reserved, ... }) = reserved;
   166 fun the_includes (Target { includes, ... }) = includes;
   167 fun the_name_syntax (Target { name_syntax_table = NameSyntaxTable x, ... }) = x;
   168 fun the_module_alias (Target { module_alias , ... }) = module_alias;
   169 
   170 val abort_allowed = snd o CodeTargetData.get;
   171 
   172 fun assert_target thy target =
   173   case Symtab.lookup (fst (CodeTargetData.get thy)) target
   174    of SOME data => target
   175     | NONE => error ("Unknown code target language: " ^ quote target);
   176 
   177 fun put_target (target, seri) thy =
   178   let
   179     val lookup_target = Symtab.lookup (fst (CodeTargetData.get thy));
   180     val _ = case seri
   181      of Extends (super, _) => if is_some (lookup_target super) then ()
   182           else error ("Unknown code target language: " ^ quote super)
   183       | _ => ();
   184     val overwriting = case (Option.map the_serializer o lookup_target) target
   185      of NONE => false
   186       | SOME (Extends _) => true
   187       | SOME (Serializer _) => (case seri
   188          of Extends _ => error ("Will not overwrite existing target " ^ quote target)
   189           | _ => true);
   190     val _ = if overwriting
   191       then warning ("Overwriting existing target " ^ quote target)
   192       else (); 
   193   in
   194     thy
   195     |> (CodeTargetData.map o apfst oo Symtab.map_default)
   196           (target, mk_target ((serial (), seri), (([], Symtab.empty),
   197             (mk_name_syntax_table ((Symtab.empty, StringPairTab.empty), (Symtab.empty, Symtab.empty)),
   198               Symtab.empty))))
   199           ((map_target o apfst o apsnd o K) seri)
   200   end;
   201 
   202 fun add_target (target, seri) = put_target (target, Serializer seri);
   203 fun extend_target (target, (super, modify)) =
   204   put_target (target, Extends (super, modify));
   205 
   206 fun map_target_data target f thy =
   207   let
   208     val _ = assert_target thy target;
   209   in
   210     thy
   211     |> (CodeTargetData.map o apfst o Symtab.map_entry target o map_target) f
   212   end;
   213 
   214 fun map_reserved target =
   215   map_target_data target o apsnd o apfst o apfst;
   216 fun map_includes target =
   217   map_target_data target o apsnd o apfst o apsnd;
   218 fun map_name_syntax target =
   219   map_target_data target o apsnd o apsnd o apfst o map_name_syntax_table;
   220 fun map_module_alias target =
   221   map_target_data target o apsnd o apsnd o apsnd;
   222 
   223 
   224 (** serializer configuration **)
   225 
   226 (* data access *)
   227 
   228 local
   229 
   230 fun cert_class thy class =
   231   let
   232     val _ = AxClass.get_info thy class;
   233   in class end;
   234 
   235 fun read_class thy = cert_class thy o Sign.intern_class thy;
   236 
   237 fun cert_tyco thy tyco =
   238   let
   239     val _ = if Sign.declared_tyname thy tyco then ()
   240       else error ("No such type constructor: " ^ quote tyco);
   241   in tyco end;
   242 
   243 fun read_tyco thy = cert_tyco thy o Sign.intern_type thy;
   244 
   245 fun gen_add_syntax_class prep_class prep_const target raw_class raw_syn thy =
   246   let
   247     val class = prep_class thy raw_class;
   248   in case raw_syn
   249    of SOME syntax =>
   250       thy
   251       |> (map_name_syntax target o apfst o apfst)
   252            (Symtab.update (class, syntax))
   253     | NONE =>
   254       thy
   255       |> (map_name_syntax target o apfst o apfst)
   256            (Symtab.delete_safe class)
   257   end;
   258 
   259 fun gen_add_syntax_inst prep_class prep_tyco target (raw_tyco, raw_class) add_del thy =
   260   let
   261     val inst = (prep_class thy raw_class, prep_tyco thy raw_tyco);
   262   in if add_del then
   263     thy
   264     |> (map_name_syntax target o apfst o apsnd)
   265         (StringPairTab.update (inst, ()))
   266   else
   267     thy
   268     |> (map_name_syntax target o apfst o apsnd)
   269         (StringPairTab.delete_safe inst)
   270   end;
   271 
   272 fun gen_add_syntax_tyco prep_tyco target raw_tyco raw_syn thy =
   273   let
   274     val tyco = prep_tyco thy raw_tyco;
   275     fun check_args (syntax as (n, _)) = if n <> Sign.arity_number thy tyco
   276       then error ("Number of arguments mismatch in syntax for type constructor " ^ quote tyco)
   277       else syntax
   278   in case raw_syn
   279    of SOME syntax =>
   280       thy
   281       |> (map_name_syntax target o apsnd o apfst)
   282            (Symtab.update (tyco, check_args syntax))
   283     | NONE =>
   284       thy
   285       |> (map_name_syntax target o apsnd o apfst)
   286            (Symtab.delete_safe tyco)
   287   end;
   288 
   289 fun gen_add_syntax_const prep_const target raw_c raw_syn thy =
   290   let
   291     val c = prep_const thy raw_c;
   292     fun check_args (syntax as (n, _)) = if n > Code_Unit.no_args thy c
   293       then error ("Too many arguments in syntax for constant " ^ quote c)
   294       else syntax;
   295   in case raw_syn
   296    of SOME syntax =>
   297       thy
   298       |> (map_name_syntax target o apsnd o apsnd)
   299            (Symtab.update (c, check_args syntax))
   300     | NONE =>
   301       thy
   302       |> (map_name_syntax target o apsnd o apsnd)
   303            (Symtab.delete_safe c)
   304   end;
   305 
   306 fun add_reserved target =
   307   let
   308     fun add sym syms = if member (op =) syms sym
   309       then error ("Reserved symbol " ^ quote sym ^ " already declared")
   310       else insert (op =) sym syms
   311   in map_reserved target o add end;
   312 
   313 fun gen_add_include read_const target args thy =
   314   let
   315     fun add (name, SOME (content, raw_cs)) incls =
   316           let
   317             val _ = if Symtab.defined incls name
   318               then warning ("Overwriting existing include " ^ name)
   319               else ();
   320             val cs = map (read_const thy) raw_cs;
   321           in Symtab.update (name, (str content, cs)) incls end
   322       | add (name, NONE) incls = Symtab.delete name incls;
   323   in map_includes target (add args) thy end;
   324 
   325 val add_include = gen_add_include Code_Unit.check_const;
   326 val add_include_cmd = gen_add_include Code_Unit.read_const;
   327 
   328 fun add_module_alias target =
   329   map_module_alias target o Symtab.update o apsnd Code_Name.check_modulename;
   330 
   331 fun gen_allow_abort prep_const raw_c thy =
   332   let
   333     val c = prep_const thy raw_c;
   334   in thy |> (CodeTargetData.map o apsnd) (insert (op =) c) end;
   335 
   336 fun zip_list (x::xs) f g =
   337   f
   338   #-> (fn y =>
   339     fold_map (fn x => g |-- f >> pair x) xs
   340     #-> (fn xys => pair ((x, y) :: xys)));
   341 
   342 
   343 (* concrete syntax *)
   344 
   345 structure P = OuterParse
   346 and K = OuterKeyword
   347 
   348 fun parse_multi_syntax parse_thing parse_syntax =
   349   P.and_list1 parse_thing
   350   #-> (fn things => Scan.repeat1 (P.$$$ "(" |-- P.name --
   351         (zip_list things parse_syntax (P.$$$ "and")) --| P.$$$ ")"));
   352 
   353 in
   354 
   355 val add_syntax_class = gen_add_syntax_class cert_class (K I);
   356 val add_syntax_inst = gen_add_syntax_inst cert_class cert_tyco;
   357 val add_syntax_tyco = gen_add_syntax_tyco cert_tyco;
   358 val add_syntax_const = gen_add_syntax_const (K I);
   359 val allow_abort = gen_allow_abort (K I);
   360 val add_reserved = add_reserved;
   361 
   362 val add_syntax_class_cmd = gen_add_syntax_class read_class Code_Unit.read_const;
   363 val add_syntax_inst_cmd = gen_add_syntax_inst read_class read_tyco;
   364 val add_syntax_tyco_cmd = gen_add_syntax_tyco read_tyco;
   365 val add_syntax_const_cmd = gen_add_syntax_const Code_Unit.read_const;
   366 val allow_abort_cmd = gen_allow_abort Code_Unit.read_const;
   367 
   368 fun the_literals thy =
   369   let
   370     val (targets, _) = CodeTargetData.get thy;
   371     fun literals target = case Symtab.lookup targets target
   372      of SOME data => (case the_serializer data
   373          of Serializer (_, literals) => literals
   374           | Extends (super, _) => literals super)
   375       | NONE => error ("Unknown code target language: " ^ quote target);
   376   in literals end;
   377 
   378 
   379 (** serializer usage **)
   380 
   381 (* montage *)
   382 
   383 local
   384 
   385 fun labelled_name thy program name = case Graph.get_node program name
   386  of Code_Thingol.Fun (c, _) => quote (Code_Unit.string_of_const thy c)
   387   | Code_Thingol.Datatype (tyco, _) => "type " ^ quote (Sign.extern_type thy tyco)
   388   | Code_Thingol.Datatypecons (c, _) => quote (Code_Unit.string_of_const thy c)
   389   | Code_Thingol.Class (class, _) => "class " ^ quote (Sign.extern_class thy class)
   390   | Code_Thingol.Classrel (sub, super) => let
   391         val Code_Thingol.Class (sub, _) = Graph.get_node program sub
   392         val Code_Thingol.Class (super, _) = Graph.get_node program super
   393       in quote (Sign.extern_class thy sub ^ " < " ^ Sign.extern_class thy super) end
   394   | Code_Thingol.Classparam (c, _) => quote (Code_Unit.string_of_const thy c)
   395   | Code_Thingol.Classinst ((class, (tyco, _)), _) => let
   396         val Code_Thingol.Class (class, _) = Graph.get_node program class
   397         val Code_Thingol.Datatype (tyco, _) = Graph.get_node program tyco
   398       in quote (Sign.extern_type thy tyco ^ " :: " ^ Sign.extern_class thy class) end
   399 
   400 fun invoke_serializer thy abortable serializer reserved abs_includes 
   401     module_alias class instance tyco const module args naming program2 names1 =
   402   let
   403     fun distill_names lookup_name src_tab = Symtab.empty
   404       |> fold_map (fn thing_identifier => fn tab => case lookup_name naming thing_identifier
   405            of SOME name => (SOME name, Symtab.update_new (name, the (Symtab.lookup src_tab thing_identifier)) tab)
   406             | NONE => (NONE, tab)) (Symtab.keys src_tab)
   407       |>> map_filter I;
   408     val (names_class, class') = distill_names Code_Thingol.lookup_class class;
   409     val names_inst = map_filter (Code_Thingol.lookup_instance naming)
   410       (StringPairTab.keys instance);
   411     val (names_tyco, tyco') = distill_names Code_Thingol.lookup_tyco tyco;
   412     val (names_const, const') = distill_names Code_Thingol.lookup_const const;
   413     val names_hidden = names_class @ names_inst @ names_tyco @ names_const;
   414     val names2 = subtract (op =) names_hidden names1;
   415     val program3 = Graph.subgraph (not o member (op =) names_hidden) program2;
   416     val names_all = Graph.all_succs program2 names2;
   417     val includes = abs_includes names_all;
   418     val program4 = Graph.subgraph (member (op =) names_all) program3;
   419     val empty_funs = filter_out (member (op =) abortable)
   420       (Code_Thingol.empty_funs program3);
   421     val _ = if null empty_funs then () else error ("No defining equations for "
   422       ^ commas (map (Sign.extern_const thy) empty_funs));
   423   in
   424     serializer module args (labelled_name thy program2) reserved includes
   425       (Symtab.lookup module_alias) (Symtab.lookup class')
   426       (Symtab.lookup tyco') (Symtab.lookup const')
   427       naming program4 names2
   428   end;
   429 
   430 fun mount_serializer thy alt_serializer target module args naming program names =
   431   let
   432     val (targets, abortable) = CodeTargetData.get thy;
   433     fun collapse_hierarchy target =
   434       let
   435         val data = case Symtab.lookup targets target
   436          of SOME data => data
   437           | NONE => error ("Unknown code target language: " ^ quote target);
   438       in case the_serializer data
   439        of Serializer _ => (I, data)
   440         | Extends (super, modify) => let
   441             val (modify', data') = collapse_hierarchy super
   442           in (modify' #> modify naming, merge_target false target (data', data)) end
   443       end;
   444     val (modify, data) = collapse_hierarchy target;
   445     val (serializer, _) = the_default (case the_serializer data
   446      of Serializer seri => seri) alt_serializer;
   447     val reserved = the_reserved data;
   448     fun select_include names_all (name, (content, cs)) =
   449       if null cs then SOME (name, content)
   450       else if exists (fn c => case Code_Thingol.lookup_const naming c
   451        of SOME name => member (op =) names_all name
   452         | NONE => false) cs
   453       then SOME (name, content) else NONE;
   454     fun includes names_all = map_filter (select_include names_all)
   455       ((Symtab.dest o the_includes) data);
   456     val module_alias = the_module_alias data;
   457     val { class, instance, tyco, const } = the_name_syntax data;
   458   in
   459     invoke_serializer thy abortable serializer reserved
   460       includes module_alias class instance tyco const module args naming (modify program) names
   461   end;
   462 
   463 in
   464 
   465 fun serialize thy = mount_serializer thy NONE;
   466 
   467 fun serialize_custom thy (target_name, seri) naming program names =
   468   mount_serializer thy (SOME seri) target_name NONE [] naming program names (String [])
   469   |> the;
   470 
   471 end; (* local *)
   472 
   473 fun parse_args f args =
   474   case Scan.read OuterLex.stopper f args
   475    of SOME x => x
   476     | NONE => error "Bad serializer arguments";
   477 
   478 
   479 (* code presentation *)
   480 
   481 fun code_of thy target module_name cs names_stmt =
   482   let
   483     val (names_cs, (naming, program)) = Code_Thingol.consts_program thy cs;
   484   in
   485     string (names_stmt naming) (serialize thy target (SOME module_name) []
   486       naming program names_cs)
   487   end;
   488 
   489 
   490 (* code generation *)
   491 
   492 fun transitivly_non_empty_funs thy naming program =
   493   let
   494     val cs = subtract (op =) (abort_allowed thy) (Code_Thingol.empty_funs program);
   495     val names = map_filter (Code_Thingol.lookup_const naming) cs;
   496   in subtract (op =) (Graph.all_preds program names) (Graph.keys program) end;
   497 
   498 fun read_const_exprs thy cs =
   499   let
   500     val (cs1, cs2) = Code_Name.read_const_exprs thy cs;
   501     val (names3, (naming, program)) = Code_Thingol.consts_program thy cs2;
   502     val names4 = transitivly_non_empty_funs thy naming program;
   503     val cs5 = map_filter
   504       (fn (c, name) => if member (op =) names4 name then SOME c else NONE) (cs2 ~~ names3);
   505   in fold (insert (op =)) cs5 cs1 end;
   506 
   507 fun cached_program thy = 
   508   let
   509     val (naming, program) = Code_Thingol.cached_program thy;
   510   in (transitivly_non_empty_funs thy naming program, (naming, program)) end
   511 
   512 fun export_code thy cs seris =
   513   let
   514     val (cs', (naming, program)) = if null cs then cached_program thy
   515       else Code_Thingol.consts_program thy cs;
   516     fun mk_seri_dest dest = case dest
   517      of NONE => compile
   518       | SOME "-" => export
   519       | SOME f => file (Path.explode f)
   520     val _ = map (fn (((target, module), dest), args) =>
   521       (mk_seri_dest dest (serialize thy target module args naming program cs'))) seris;
   522   in () end;
   523 
   524 fun export_code_cmd raw_cs seris thy = export_code thy (read_const_exprs thy raw_cs) seris;
   525 
   526 
   527 (** Isar setup **)
   528 
   529 val (inK, module_nameK, fileK) = ("in", "module_name", "file");
   530 
   531 fun code_exprP cmd =
   532   (Scan.repeat P.term_group
   533   -- Scan.repeat (P.$$$ inK |-- P.name
   534      -- Scan.option (P.$$$ module_nameK |-- P.name)
   535      -- Scan.option (P.$$$ fileK |-- P.name)
   536      -- Scan.optional (P.$$$ "(" |-- Args.parse --| P.$$$ ")") []
   537   ) >> (fn (raw_cs, seris) => cmd raw_cs seris));
   538 
   539 val _ = List.app OuterKeyword.keyword [inK, module_nameK, fileK];
   540 
   541 val _ =
   542   OuterSyntax.command "code_class" "define code syntax for class" K.thy_decl (
   543     parse_multi_syntax P.xname (Scan.option P.string)
   544     >> (Toplevel.theory oo fold) (fn (target, syns) =>
   545           fold (fn (raw_class, syn) => add_syntax_class_cmd target raw_class syn) syns)
   546   );
   547 
   548 val _ =
   549   OuterSyntax.command "code_instance" "define code syntax for instance" K.thy_decl (
   550     parse_multi_syntax (P.xname --| P.$$$ "::" -- P.xname)
   551       ((P.minus >> K true) || Scan.succeed false)
   552     >> (Toplevel.theory oo fold) (fn (target, syns) =>
   553           fold (fn (raw_inst, add_del) => add_syntax_inst_cmd target raw_inst add_del) syns)
   554   );
   555 
   556 val _ =
   557   OuterSyntax.command "code_type" "define code syntax for type constructor" K.thy_decl (
   558     parse_multi_syntax P.xname (parse_syntax I)
   559     >> (Toplevel.theory oo fold) (fn (target, syns) =>
   560           fold (fn (raw_tyco, syn) => add_syntax_tyco_cmd target raw_tyco syn) syns)
   561   );
   562 
   563 val _ =
   564   OuterSyntax.command "code_const" "define code syntax for constant" K.thy_decl (
   565     parse_multi_syntax P.term_group (parse_syntax fst)
   566     >> (Toplevel.theory oo fold) (fn (target, syns) =>
   567       fold (fn (raw_const, syn) => add_syntax_const_cmd target raw_const
   568         (Code_Printer.simple_const_syntax syn)) syns)
   569   );
   570 
   571 val _ =
   572   OuterSyntax.command "code_reserved" "declare words as reserved for target language" K.thy_decl (
   573     P.name -- Scan.repeat1 P.name
   574     >> (fn (target, reserveds) => (Toplevel.theory o fold (add_reserved target)) reserveds)
   575   );
   576 
   577 val _ =
   578   OuterSyntax.command "code_include" "declare piece of code to be included in generated code" K.thy_decl (
   579     P.name -- P.name -- (P.text :|-- (fn "-" => Scan.succeed NONE
   580       | s => Scan.optional (P.$$$ "attach" |-- Scan.repeat1 P.term) [] >> pair s >> SOME))
   581     >> (fn ((target, name), content_consts) =>
   582         (Toplevel.theory o add_include_cmd target) (name, content_consts))
   583   );
   584 
   585 val _ =
   586   OuterSyntax.command "code_modulename" "alias module to other name" K.thy_decl (
   587     P.name -- Scan.repeat1 (P.name -- P.name)
   588     >> (fn (target, modlnames) => (Toplevel.theory o fold (add_module_alias target)) modlnames)
   589   );
   590 
   591 val _ =
   592   OuterSyntax.command "code_abort" "permit constant to be implemented as program abort" K.thy_decl (
   593     Scan.repeat1 P.term_group >> (Toplevel.theory o fold allow_abort_cmd)
   594   );
   595 
   596 val _ =
   597   OuterSyntax.command "export_code" "generate executable code for constants"
   598     K.diag (P.!!! (code_exprP export_code_cmd) >> (fn f => Toplevel.keep (f o Toplevel.theory_of)));
   599 
   600 end; (*local*)
   601 
   602 end; (*struct*)