(* Title: Pure/Tools/codegen_package.ML
ID: $Id$
Author: Florian Haftmann, TU Muenchen
Code generator extraction kernel. Code generator Isar setup.
*)
signature CODEGEN_PACKAGE =
sig
include BASIC_CODEGEN_THINGOL;
val codegen_term: theory -> term -> thm * iterm;
val eval_term: theory -> (string (*reference name!*) * 'a option ref) * term -> 'a;
val const_of_idf: theory -> string -> string * typ;
val get_root_module: theory -> CodegenThingol.code;
type appgen;
val add_appconst: string * appgen -> theory -> theory;
val appgen_numeral: (theory -> term -> IntInf.int) -> appgen;
val appgen_char: (term -> int option) -> appgen;
val appgen_case: (theory -> term
-> ((string * typ) list * ((term * typ) * (term * term) list)) option)
-> appgen;
val appgen_let: appgen;
end;
structure CodegenPackage : CODEGEN_PACKAGE =
struct
open BasicCodegenThingol;
val tracing = CodegenThingol.tracing;
val succeed = CodegenThingol.succeed;
val fail = CodegenThingol.fail;
(** code extraction **)
(* theory data *)
structure Code = CodeDataFun
(struct
val name = "Pure/code";
type T = CodegenThingol.code;
val empty = CodegenThingol.empty_code;
fun merge _ = CodegenThingol.merge_code;
fun purge _ NONE _ = CodegenThingol.empty_code
| purge NONE _ _ = CodegenThingol.empty_code
| purge (SOME thy) (SOME cs) code =
let
val cs_exisiting =
map_filter (CodegenNames.const_rev thy) (Graph.keys code);
in
Graph.del_nodes
((Graph.all_succs code
o map (CodegenNames.const thy)
o filter (member CodegenConsts.eq_const cs_exisiting)
) cs)
code
end;
end);
type appgen = theory -> ((sort -> sort) * Sorts.algebra) * Consts.T
-> CodegenFuncgr.T
-> bool * string list option
-> (string * typ) * term list -> CodegenThingol.transact -> iterm * CodegenThingol.transact;
type appgens = (int * (appgen * stamp)) Symtab.table;
val merge_appgens : appgens * appgens -> appgens =
Symtab.merge (fn ((bounds1, (_, stamp1)), (bounds2, (_, stamp2))) =>
bounds1 = bounds2 andalso stamp1 = stamp2);
structure Consttab = CodegenConsts.Consttab;
type abstypes = typ Symtab.table * CodegenConsts.const Consttab.table;
fun merge_abstypes ((typs1, consts1) : abstypes, (typs2, consts2) : abstypes) =
(Symtab.merge (Type.eq_type Vartab.empty) (typs1, typs2),
Consttab.merge CodegenConsts.eq_const (consts1, consts2));
structure CodegenPackageData = TheoryDataFun
(struct
val name = "Pure/codegen_package";
type T = appgens * abstypes;
val empty = (Symtab.empty, (Symtab.empty, Consttab.empty));
val copy = I;
val extend = I;
fun merge _ ((appgens1, abstypes1), (appgens2, abstypes2)) =
(merge_appgens (appgens1, appgens2), merge_abstypes (abstypes1, abstypes2));
fun print _ _ = ();
end);
val _ = Context.add_setup (Code.init #> CodegenPackageData.init);
(* extraction kernel *)
fun check_strict (false, _) has_seri x =
false
| check_strict (_, SOME targets) has_seri x =
not (has_seri targets x)
| check_strict (true, _) has_seri x =
true;
fun get_abstype thy (tyco, tys) = case Symtab.lookup ((fst o snd o CodegenPackageData.get) thy) tyco
of SOME ty => SOME ((map_atyps (fn TFree (n, _) => nth tys (the (Int.fromString n)))) ty)
| NONE => NONE;
fun ensure_def_class thy (algbr as ((proj_sort, _), _)) funcgr strct class trns =
let
val (v, cs) = (ClassPackage.the_consts_sign thy) class;
val superclasses = (proj_sort o Sign.super_classes thy) class;
val classops' = map (CodegenNames.const thy o CodegenConsts.norm_of_typ thy) cs;
val class' = CodegenNames.class thy class;
fun defgen_class trns =
trns
|> fold_map (ensure_def_class thy algbr funcgr strct) superclasses
||>> (fold_map (exprgen_type thy algbr funcgr strct) o map snd) cs
|-> (fn (superclasses, classoptyps) => succeed
(CodegenThingol.Class (superclasses,
(unprefix "'" v, classops' ~~ classoptyps))))
in
trns
|> tracing (fn _ => "generating class " ^ quote class)
|> CodegenThingol.ensure_def defgen_class true
("generating class " ^ quote class) class'
|> pair class'
end
and ensure_def_tyco thy algbr funcgr strct tyco trns =
let
fun defgen_datatype trns =
case CodegenData.get_datatype thy tyco
of SOME (vs, cos) =>
trns
|> fold_map (exprgen_tyvar_sort thy algbr funcgr strct) vs
||>> fold_map (fn (c, tys) =>
fold_map (exprgen_type thy algbr funcgr strct) tys
#-> (fn tys' =>
pair ((CodegenNames.const thy o CodegenConsts.norm_of_typ thy)
(c, tys ---> Type (tyco, map TFree vs)), tys'))) cos
|-> (fn (vs, cos) => succeed (CodegenThingol.Datatype (vs, cos)))
| NONE =>
trns
|> fail ("No such datatype: " ^ quote tyco)
val tyco' = CodegenNames.tyco thy tyco;
val strict = check_strict strct (CodegenSerializer.tyco_has_serialization thy) tyco';
in
trns
|> tracing (fn _ => "generating type constructor " ^ quote tyco)
|> CodegenThingol.ensure_def defgen_datatype strict
("generating type constructor " ^ quote tyco) tyco'
|> pair tyco'
end
and exprgen_tyvar_sort thy (algbr as ((proj_sort, _), _)) funcgr strct (v, sort) trns =
trns
|> fold_map (ensure_def_class thy algbr funcgr strct) (proj_sort sort)
|-> (fn sort => pair (unprefix "'" v, sort))
and exprgen_type thy algbr funcgr strct (TVar _) trns =
error "TVar encountered in typ during code generation"
| exprgen_type thy algbr funcgr strct (TFree vs) trns =
trns
|> exprgen_tyvar_sort thy algbr funcgr strct vs
|-> (fn (v, sort) => pair (ITyVar v))
| exprgen_type thy algbr funcgr strct (Type ("fun", [t1, t2])) trns =
trns
|> exprgen_type thy algbr funcgr strct t1
||>> exprgen_type thy algbr funcgr strct t2
|-> (fn (t1', t2') => pair (t1' `-> t2'))
| exprgen_type thy algbr funcgr strct (Type (tyco, tys)) trns =
case get_abstype thy (tyco, tys)
of SOME ty =>
trns
|> exprgen_type thy algbr funcgr strct ty
| NONE =>
trns
|> ensure_def_tyco thy algbr funcgr strct tyco
||>> fold_map (exprgen_type thy algbr funcgr strct) tys
|-> (fn (tyco, tys) => pair (tyco `%% tys));
exception CONSTRAIN of (string * typ) * typ;
fun exprgen_typinst thy (algbr as ((proj_sort, algebra), consts)) funcgr strct (ty_ctxt, sort_decl) trns =
let
val pp = Sign.pp thy;
datatype inst =
Inst of (class * string) * inst list list
| Contxt of (string * sort) * (class list * int);
fun classrel (l as Contxt (v_sort, (classes, n)), _) class =
Contxt (v_sort, (class :: classes, n))
| classrel (Inst ((_, tyco), lss), _) class =
Inst ((class, tyco), lss);
fun constructor tyco iss class =
Inst ((class, tyco), (map o map) fst iss);
fun variable (TFree (v, sort)) =
let
val sort' = proj_sort sort;
in map_index (fn (n, class) => (Contxt ((v, sort'), ([], n)), class)) sort' end;
val insts = Sorts.of_sort_derivation pp algebra
{classrel = classrel, constructor = constructor, variable = variable}
(ty_ctxt, proj_sort sort_decl);
fun mk_dict (Inst (inst, instss)) trns =
trns
|> ensure_def_inst thy algbr funcgr strct inst
||>> (fold_map o fold_map) mk_dict instss
|-> (fn (inst, instss) => pair (Instance (inst, instss)))
| mk_dict (Contxt ((v, sort), (classes, k))) trns =
trns
|> fold_map (ensure_def_class thy algbr funcgr strct) classes
|-> (fn classes => pair (Context (classes, (unprefix "'" v,
if length sort = 1 then ~1 else k))))
in
trns
|> fold_map mk_dict insts
end
and exprgen_typinst_const thy (algbr as (_, consts)) funcgr strct (c, ty_ctxt) trns =
let
val c' = CodegenConsts.norm_of_typ thy (c, ty_ctxt)
val idf = CodegenNames.const thy c';
val ty_decl = Consts.declaration consts idf;
val insts = (op ~~ o apsnd (map (snd o dest_TVar)) oo pairself)
(curry (Consts.typargs consts) idf) (ty_ctxt, ty_decl);
val _ = if exists not (map (Sign.of_sort thy) insts)
then raise CONSTRAIN ((c, ty_decl), ty_ctxt) else ();
in
trns
|> fold_map (exprgen_typinst thy algbr funcgr strct) insts
end
and ensure_def_inst thy (algbr as ((proj_sort, _), _)) funcgr strct (class, tyco) trns =
let
val (vs, classop_defs) = ((apsnd o map) Const o ClassPackage.the_inst_sign thy)
(class, tyco);
val classops = (map (CodegenConsts.norm_of_typ thy) o snd
o ClassPackage.the_consts_sign thy) class;
val arity_typ = Type (tyco, (map TFree vs));
val superclasses = (proj_sort o Sign.super_classes thy) class
fun gen_superarity superclass trns =
trns
|> ensure_def_class thy algbr funcgr strct superclass
||>> exprgen_typinst thy algbr funcgr strct (arity_typ, [superclass])
|-> (fn (superclass, [Instance (inst, iss)]) => pair (superclass, (inst, iss)));
fun gen_classop_def (classop, t) trns =
trns
|> ensure_def_const thy algbr funcgr strct classop
||>> exprgen_term thy algbr funcgr strct t;
fun defgen_inst trns =
trns
|> ensure_def_class thy algbr funcgr strct class
||>> ensure_def_tyco thy algbr funcgr strct tyco
||>> fold_map (exprgen_tyvar_sort thy algbr funcgr strct) vs
||>> fold_map gen_superarity superclasses
||>> fold_map gen_classop_def (classops ~~ classop_defs)
|-> (fn ((((class, tyco), arity), superarities), classops) =>
succeed (CodegenThingol.Classinst ((class, (tyco, arity)), (superarities, classops))));
val inst = CodegenNames.instance thy (class, tyco);
in
trns
|> tracing (fn _ => "generating instance " ^ quote class ^ " / " ^ quote tyco)
|> CodegenThingol.ensure_def defgen_inst true
("generating instance " ^ quote class ^ " / " ^ quote tyco) inst
|> pair inst
end
and ensure_def_const thy (algbr as (_, consts)) funcgr strct (c, tys) trns =
let
val c' = CodegenNames.const thy (c, tys);
fun defgen_datatypecons trns =
trns
|> ensure_def_tyco thy algbr funcgr strct
((the o CodegenData.get_datatype_of_constr thy) (c, tys))
|-> (fn _ => succeed CodegenThingol.Bot);
fun defgen_classop trns =
trns
|> ensure_def_class thy algbr funcgr strct ((the o AxClass.class_of_param thy) c)
|-> (fn _ => succeed CodegenThingol.Bot);
fun defgen_fun trns =
case CodegenFuncgr.get_funcs funcgr
(perhaps (Consttab.lookup ((snd o snd o CodegenPackageData.get) thy)) (c, tys))
of eq_thms as eq_thm :: _ =>
let
val msg = cat_lines ("generating code for theorems " :: map string_of_thm eq_thms);
val ty = (Logic.unvarifyT o CodegenData.typ_func thy) eq_thm;
val vs = (map dest_TFree o Consts.typargs consts) (c', ty);
val dest_eqthm =
apfst (snd o strip_comb) o Logic.dest_equals o Logic.unvarify o prop_of;
fun exprgen_eq (args, rhs) trns =
trns
|> fold_map (exprgen_term thy algbr funcgr strct) args
||>> exprgen_term thy algbr funcgr strct rhs;
in
trns
|> CodegenThingol.message msg (fn trns => trns
|> fold_map (exprgen_eq o dest_eqthm) eq_thms
||>> fold_map (exprgen_tyvar_sort thy algbr funcgr strct) vs
||>> exprgen_type thy algbr funcgr strct ty
|-> (fn ((eqs, vs), ty) => succeed (CodegenThingol.Fun (eqs, (vs, ty)))))
end
| [] =>
trns
|> fail ("No defining equations found for "
^ (quote o CodegenConsts.string_of_const thy) (c, tys));
val defgen =
if CodegenNames.has_nsp CodegenNames.nsp_fun c'
then defgen_fun
else if CodegenNames.has_nsp CodegenNames.nsp_classop c'
then defgen_classop
else if CodegenNames.has_nsp CodegenNames.nsp_dtco c'
then defgen_datatypecons
else error ("Illegal shallow name space for constant: " ^ quote c');
val strict = check_strict strct (CodegenSerializer.const_has_serialization thy) c';
in
trns
|> tracing (fn _ => "generating constant "
^ (quote o CodegenConsts.string_of_const thy) (c, tys))
|> CodegenThingol.ensure_def defgen strict ("generating constant "
^ CodegenConsts.string_of_const thy (c, tys)) c'
|> pair c'
end
and exprgen_term thy algbr funcgr strct (Const (c, ty)) trns =
trns
|> select_appgen thy algbr funcgr strct ((c, ty), [])
| exprgen_term thy algbr funcgr strct (Var _) trns =
error "Var encountered in term during code generation"
| exprgen_term thy algbr funcgr strct (Free (v, ty)) trns =
trns
|> exprgen_type thy algbr funcgr strct ty
|-> (fn _ => pair (IVar v))
| exprgen_term thy algbr funcgr strct (Abs (raw_v, ty, raw_t)) trns =
let
val (v, t) = Syntax.variant_abs (CodegenNames.purify_var raw_v, ty, raw_t);
in
trns
|> exprgen_type thy algbr funcgr strct ty
||>> exprgen_term thy algbr funcgr strct t
|-> (fn (ty, t) => pair ((v, ty) `|-> t))
end
| exprgen_term thy algbr funcgr strct (t as _ $ _) trns =
case strip_comb t
of (Const (c, ty), ts) =>
trns
|> select_appgen thy algbr funcgr strct ((c, ty), ts)
|-> (fn t => pair t)
| (t', ts) =>
trns
|> exprgen_term thy algbr funcgr strct t'
||>> fold_map (exprgen_term thy algbr funcgr strct) ts
|-> (fn (t, ts) => pair (t `$$ ts))
and appgen_default thy algbr funcgr strct ((c, ty), ts) trns =
trns
|> ensure_def_const thy algbr funcgr strct (CodegenConsts.norm_of_typ thy (c, ty))
||>> exprgen_type thy algbr funcgr strct ty
||>> exprgen_typinst_const thy algbr funcgr strct (c, ty)
||>> fold_map (exprgen_term thy algbr funcgr strct) ts
|-> (fn (((c, ty), iss), ts) =>
pair (IConst (c, (iss, ty)) `$$ ts))
and select_appgen thy algbr funcgr strct ((c, ty), ts) trns =
case Symtab.lookup (fst (CodegenPackageData.get thy)) c
of SOME (i, (appgen, _)) =>
if length ts < i then
let
val tys = Library.take (i - length ts, ((fst o strip_type) ty));
val vs = Name.names (Name.declare c Name.context) "a" tys;
in
trns
|> fold_map (exprgen_type thy algbr funcgr strct) tys
||>> appgen thy algbr funcgr strct ((c, ty), ts @ map Free vs)
|-> (fn (tys, t) => pair (map2 (fn (v, _) => pair v) vs tys `|--> t))
end
else if length ts > i then
trns
|> appgen thy algbr funcgr strct ((c, ty), Library.take (i, ts))
||>> fold_map (exprgen_term thy algbr funcgr strct) (Library.drop (i, ts))
|-> (fn (t, ts) => pair (t `$$ ts))
else
trns
|> appgen thy algbr funcgr strct ((c, ty), ts)
| NONE =>
trns
|> appgen_default thy algbr funcgr strct ((c, ty), ts);
(* entrance points into extraction kernel *)
fun ensure_def_const' thy algbr funcgr strct c trns =
ensure_def_const thy algbr funcgr strct c trns
handle CONSTRAIN ((c, ty), ty_decl) => error (
"Constant " ^ c ^ " with most general type\n"
^ Sign.string_of_typ thy ty
^ "\noccurs with type\n"
^ Sign.string_of_typ thy ty_decl);
fun exprgen_term' thy algbr funcgr strct t trns =
exprgen_term thy algbr funcgr strct t trns
handle CONSTRAIN ((c, ty), ty_decl) => error ("In term " ^ (quote o Sign.string_of_term thy) t
^ ",\nconstant " ^ c ^ " with most general type\n"
^ Sign.string_of_typ thy ty
^ "\noccurs with type\n"
^ Sign.string_of_typ thy ty_decl);
(* parametrized application generators, for instantiation in object logic *)
(* (axiomatic extensions of extraction kernel *)
fun appgen_numeral int_of_numeral thy algbr funcgr strct (app as (c, ts)) trns =
case try (int_of_numeral thy) (list_comb (Const c, ts))
of SOME i =>
trns
|> appgen_default thy algbr funcgr strct app
|-> (fn t => pair (CodegenThingol.INum (i, t)))
| NONE =>
trns
|> appgen_default thy algbr funcgr strct app;
fun appgen_char char_to_index thy algbr funcgr strct (app as ((_, ty), _)) trns =
case (char_to_index o list_comb o apfst Const) app
of SOME i =>
trns
|> exprgen_type thy algbr funcgr strct ty
||>> appgen_default thy algbr funcgr strct app
|-> (fn (_, t0) => pair (IChar (chr i, t0)))
| NONE =>
trns
|> appgen_default thy algbr funcgr strct app;
fun appgen_case dest_case_expr thy algbr funcgr strct (app as (c_ty, ts)) trns =
let
val SOME ([], ((st, sty), ds)) = dest_case_expr thy (list_comb (Const c_ty, ts));
fun clausegen (dt, bt) trns =
trns
|> exprgen_term thy algbr funcgr strct dt
||>> exprgen_term thy algbr funcgr strct bt;
in
trns
|> exprgen_term thy algbr funcgr strct st
||>> exprgen_type thy algbr funcgr strct sty
||>> fold_map clausegen ds
||>> appgen_default thy algbr funcgr strct app
|-> (fn (((se, sty), ds), e0) => pair (ICase (((se, sty), ds), e0)))
end;
fun appgen_let thy algbr funcgr strct (app as (_, [st, ct])) trns =
trns
|> exprgen_term thy algbr funcgr strct ct
||>> exprgen_term thy algbr funcgr strct st
||>> appgen_default thy algbr funcgr strct app
|-> (fn (((v, ty) `|-> be, se), e0) =>
pair (ICase (((se, ty), case be
of ICase (((IVar w, _), ds), _) => if v = w then ds else [(IVar v, be)]
| _ => [(IVar v, be)]
), e0))
| (_, e0) => pair e0);
fun add_appconst (c, appgen) thy =
let
val i = (length o fst o strip_type o Sign.the_const_type thy) c;
val _ = Code.change thy (K CodegenThingol.empty_code);
in
(CodegenPackageData.map o apfst)
(Symtab.update (c, (i, (appgen, stamp ())))) thy
end;
(** abstype and constsubst interface **)
fun gen_abstyp prep_const prep_typ (raw_abstyp, raw_substtyp) raw_absconsts thy =
let
val abstyp = Type.no_tvars (prep_typ thy raw_abstyp);
val substtyp = Type.no_tvars (prep_typ thy raw_substtyp);
val absconsts = (map o pairself) (prep_const thy) raw_absconsts;
val Type (abstyco, tys) = abstyp handle BIND => error ("bad type: " ^ Sign.string_of_typ thy abstyp);
val typarms = map (fst o dest_TFree) tys handle MATCH => error ("bad type: " ^ Sign.string_of_typ thy abstyp);
fun mk_index v =
let
val k = find_index (fn w => v = w) typarms;
in if k = ~1
then error ("free type variable: " ^ quote v)
else TFree (string_of_int k, [])
end;
val typpat = map_atyps (fn TFree (v, _) => mk_index v) substtyp;
fun apply_typpat (Type (tyco, tys)) =
let
val tys' = map apply_typpat tys;
in if tyco = abstyco then
(map_atyps (fn TFree (n, _) => nth tys' (the (Int.fromString n)))) typpat
else
Type (tyco, tys')
end
| apply_typpat ty = ty;
val string_of_typ = setmp show_sorts true (Sign.string_of_typ thy);
fun add_consts (c1, c2) =
let
val _ = if CodegenNames.has_nsp CodegenNames.nsp_fun (CodegenNames.const thy c2)
then ()
else error ("not a function: " ^ CodegenConsts.string_of_const thy c2);
val funcgr = CodegenFuncgr.mk_funcgr thy [c1, c2] [];
val ty_map = CodegenFuncgr.get_func_typs funcgr;
val ty1 = (apply_typpat o the o AList.lookup CodegenConsts.eq_const ty_map) c1;
val ty2 = (the o AList.lookup CodegenConsts.eq_const ty_map) c2;
val _ = if Sign.typ_equiv thy (ty1, ty2) then () else
error ("Incompatiable type signatures of " ^ CodegenConsts.string_of_const thy c1
^ " and " ^ CodegenConsts.string_of_const thy c2 ^ ":\n"
^ string_of_typ ty1 ^ "\n" ^ string_of_typ ty2);
in Consttab.update (c1, c2) end;
val _ = Code.change thy (K CodegenThingol.empty_code);
in
thy
|> (CodegenPackageData.map o apsnd) (fn (abstypes, abscs) =>
(abstypes
|> Symtab.update (abstyco, typpat),
abscs
|> fold add_consts absconsts)
)
end;
fun gen_constsubst prep_const raw_constsubsts thy =
let
val constsubsts = (map o pairself) (prep_const thy) raw_constsubsts;
val string_of_typ = setmp show_sorts true (Sign.string_of_typ thy);
fun add_consts (c1, c2) =
let
val _ = if CodegenNames.has_nsp CodegenNames.nsp_fun (CodegenNames.const thy c2)
then ()
else error ("not a function: " ^ CodegenConsts.string_of_const thy c2);
val funcgr = CodegenFuncgr.mk_funcgr thy [c1, c2] [];
val ty_map = CodegenFuncgr.get_func_typs funcgr;
val ty1 = (the o AList.lookup CodegenConsts.eq_const ty_map) c1;
val ty2 = (the o AList.lookup CodegenConsts.eq_const ty_map) c2;
val _ = if Sign.typ_equiv thy (ty1, ty2) then () else
error ("Incompatiable type signatures of " ^ CodegenConsts.string_of_const thy c1
^ " and " ^ CodegenConsts.string_of_const thy c2 ^ ":\n"
^ string_of_typ ty1 ^ "\n" ^ string_of_typ ty2);
in Consttab.update (c1, c2) end;
val _ = Code.change thy (K CodegenThingol.empty_code);
in
thy
|> (CodegenPackageData.map o apsnd o apsnd) (fold add_consts constsubsts)
end;
val abstyp = gen_abstyp CodegenConsts.norm Sign.certify_typ;
val abstyp_e = gen_abstyp CodegenConsts.read_const (fn thy => Sign.read_typ (thy, K NONE));
val constsubst = gen_constsubst CodegenConsts.norm;
val constsubst_e = gen_constsubst CodegenConsts.read_const;
(** code generation interfaces **)
fun generate thy (cs, rhss) targets init gen it =
let
val raw_funcgr = CodegenFuncgr.mk_funcgr thy cs rhss;
val cs' = map_filter (Consttab.lookup ((snd o snd o CodegenPackageData.get) thy))
(CodegenFuncgr.Constgraph.keys raw_funcgr);
val funcgr = CodegenFuncgr.mk_funcgr thy cs' [];
val qnaming = NameSpace.qualified_names NameSpace.default_naming;
val algebr = ClassPackage.operational_algebra thy;
val consttab = Consts.empty
|> fold (fn (c, ty) => Consts.declare qnaming
((CodegenNames.const thy c, ty), true))
(CodegenFuncgr.get_func_typs funcgr);
val algbr = (algebr, consttab);
in
Code.change_yield thy (CodegenThingol.start_transact init (gen thy algbr funcgr
(true, targets) it))
|> (fn (x, modl) => x)
end;
fun codegen_term thy t =
let
fun const_typ (c, ty) =
let
val const = CodegenConsts.norm_of_typ thy (c, ty);
val funcgr = CodegenFuncgr.mk_funcgr thy [const] [];
in case CodegenFuncgr.get_funcs funcgr const
of (thm :: _) => CodegenData.typ_func thy thm
| [] => Sign.the_const_type thy c
end;
val ct = Thm.cterm_of thy t;
val (thm, ct') = CodegenData.preprocess_cterm thy
(const_typ) ct;
val t' = Thm.term_of ct';
val cs_rhss = CodegenConsts.consts_of thy t';
in
(thm, generate thy cs_rhss (SOME []) NONE exprgen_term' t')
end;
fun const_of_idf thy =
CodegenConsts.typ_of_inst thy o the o CodegenNames.const_rev thy;
fun get_root_module thy =
Code.get thy;
fun eval_term thy (ref_spec, t) =
let
val _ = Term.fold_atyps (fn _ =>
error ("Term" ^ Sign.string_of_term thy t ^ "is polymorhpic"))
(Term.fastype_of t);
val (_, t') = codegen_term thy t;
in
CodegenSerializer.eval_term thy (ref_spec, t') (Code.get thy)
end;
(** toplevel interface and setup **)
local
structure P = OuterParse
and K = OuterKeyword
fun code raw_cs seris thy =
let
val cs = map (CodegenConsts.read_const thy) raw_cs;
val targets = case map fst seris
of [] => NONE
| xs => SOME xs;
val seris' = map_filter (fn (target, args as _ :: _) =>
SOME (CodegenSerializer.get_serializer thy (target, args)) | _ => NONE) seris;
fun generate' thy = case cs
of [] => []
| _ =>
generate thy (cs, []) targets NONE (fold_map oooo ensure_def_const') cs;
fun serialize' [] code seri =
seri NONE code
| serialize' cs code seri =
seri (SOME cs) code;
val cs = generate' thy;
val code = Code.get thy;
in
(map (serialize' cs code) seris'; ())
end;
val (codeK, code_abstypeK, code_constsubstK) =
("code_gen", "code_abstype", "code_constsubst");
in
val codeP =
OuterSyntax.improper_command codeK "generate and serialize executable code for constants" K.diag (
Scan.repeat P.term
-- Scan.repeat (P.$$$ "(" |--
P.name -- P.arguments
--| P.$$$ ")")
>> (fn (raw_cs, seris) => Toplevel.keep (code raw_cs seris o Toplevel.theory_of))
);
val code_abstypeP =
OuterSyntax.command code_abstypeK "axiomatic abstypes for code generation" K.thy_decl (
(P.typ -- P.typ -- Scan.optional (P.$$$ "where" |-- Scan.repeat1
(P.term --| (P.$$$ "\\<equiv>" || P.$$$ "==") -- P.term)) [])
>> (Toplevel.theory o uncurry abstyp_e)
);
val code_constsubstP =
OuterSyntax.command code_constsubstK "axiomatic constant substitutions for code generation" K.thy_decl (
Scan.repeat1 (P.term --| (P.$$$ "\\<equiv>" || P.$$$ "==") -- P.term)
>> (Toplevel.theory o constsubst_e)
);
val _ = OuterSyntax.add_parsers [codeP, code_abstypeP, code_constsubstP];
end; (* local *)
end; (* struct *)