(* Title: Pure/Tools/codegen_data.ML
ID: $Id$
Author: Florian Haftmann, TU Muenchen
Basic code generator data structures; abstract executable content of theory.
*)
signature CODEGEN_DATA =
sig
type lthms = thm list Susp.T;
val lazy: (unit -> thm list) -> lthms
val eval_always: bool ref
val add_func: thm -> theory -> theory
val del_func: thm -> theory -> theory
val add_funcl: CodegenConsts.const * lthms -> theory -> theory
val add_datatype: string * (((string * sort) list * (string * typ list) list) * lthms)
-> theory -> theory
val del_datatype: string -> theory -> theory
val add_inline: thm -> theory -> theory
val del_inline: thm -> theory -> theory
val add_inline_proc: (theory -> cterm list -> thm list) -> theory -> theory
val add_constrains: (theory -> term list -> (indexname * sort) list) -> theory -> theory
val add_preproc: (theory -> thm list -> thm list) -> theory -> theory
val these_funcs: theory -> CodegenConsts.const -> thm list
val get_datatype: theory -> string
-> ((string * sort) list * (string * typ list) list) option
val get_datatype_of_constr: theory -> CodegenConsts.const -> string option
val print_thms: theory -> unit
val typ_func: theory -> thm -> typ
val rewrite_func: thm list -> thm -> thm
val preprocess_cterm: theory -> (string * typ -> typ) -> cterm -> thm * cterm
val trace: bool ref
val strict_functyp: bool ref
end;
signature PRIVATE_CODEGEN_DATA =
sig
include CODEGEN_DATA
type data
structure CodeData: THEORY_DATA
val declare: string -> Object.T -> (Pretty.pp -> Object.T * Object.T -> Object.T)
-> (CodegenConsts.const list option -> Object.T -> Object.T) -> serial
val init: serial -> theory -> theory
val get: serial -> (Object.T -> 'a) -> data -> 'a
val put: serial -> ('a -> Object.T) -> 'a -> data -> data
end;
structure CodegenData : PRIVATE_CODEGEN_DATA =
struct
(** diagnostics **)
val trace = ref false;
fun tracing f x = (if !trace then Output.tracing (f x) else (); x);
(** lazy theorems, certificate theorems **)
type lthms = thm list Susp.T;
val eval_always = ref false;
fun lazy f = if !eval_always
then Susp.value (f ())
else Susp.delay f;
fun string_of_lthms r = case Susp.peek r
of SOME thms => (map string_of_thm o rev) thms
| NONE => ["[...]"];
fun pretty_lthms ctxt r = case Susp.peek r
of SOME thms => (map (ProofContext.pretty_thm ctxt) o rev) thms
| NONE => [Pretty.str "[...]"];
fun certificate thy f r =
case Susp.peek r
of SOME thms => (Susp.value o f thy) thms
| NONE => let
val thy_ref = Theory.self_ref thy;
in lazy (fn () => (f (Theory.deref thy_ref) o Susp.force) r) end;
fun merge' _ ([], []) = (false, [])
| merge' _ ([], ys) = (true, ys)
| merge' eq (xs, ys) = fold_rev
(fn y => fn (t, xs) => (t orelse not (member eq xs y), insert eq y xs)) ys (false, xs);
fun merge_alist eq_key eq (xys as (xs, ys)) =
if eq_list (eq_pair eq_key eq) (xs, ys)
then (false, xs)
else (true, AList.merge eq_key eq xys);
val merge_thms = merge' eq_thm;
fun merge_lthms (r1, r2) =
if Susp.same (r1, r2) then (false, r1)
else case Susp.peek r1
of SOME [] => (true, r2)
| _ => case Susp.peek r2
of SOME [] => (true, r1)
| _ => (apsnd (lazy o K)) (merge_thms (Susp.force r1, Susp.force r2));
(** code theorems **)
(* making rewrite theorems *)
fun bad_thm msg thm =
error (msg ^ ": " ^ string_of_thm thm);
fun check_rew thy thm =
let
val (lhs, rhs) = (Logic.dest_equals o Thm.prop_of) thm;
fun vars_of t = fold_aterms
(fn Var (v, _) => insert (op =) v
| Free _ => bad_thm "Illegal free variable in rewrite theorem" thm
| _ => I) t [];
fun tvars_of t = fold_term_types
(fn _ => fold_atyps (fn TVar (v, _) => insert (op =) v
| TFree _ => bad_thm "Illegal free type variable in rewrite theorem" thm)) t [];
val lhs_vs = vars_of lhs;
val rhs_vs = vars_of rhs;
val lhs_tvs = tvars_of lhs;
val rhs_tvs = tvars_of lhs;
val _ = if null (subtract (op =) lhs_vs rhs_vs)
then ()
else bad_thm "Free variables on right hand side of rewrite theorems" thm
val _ = if null (subtract (op =) lhs_tvs rhs_tvs)
then ()
else bad_thm "Free type variables on right hand side of rewrite theorems" thm
in thm end;
fun mk_rew thy thm =
let
val thms = (#mk o #mk_rews o snd o MetaSimplifier.rep_ss o Simplifier.simpset_of) thy thm;
in
map (check_rew thy) thms
end;
(* making function theorems *)
fun typ_func thy = snd o dest_Const o fst o strip_comb o fst
o Logic.dest_equals o ObjectLogic.drop_judgment thy o Drule.plain_prop_of;
val strict_functyp = ref true;
fun dest_func thy = apfst dest_Const o strip_comb o Envir.beta_eta_contract
o fst o Logic.dest_equals o ObjectLogic.drop_judgment thy o Drule.plain_prop_of;
fun mk_head thy thm =
((CodegenConsts.norm_of_typ thy o fst o dest_func thy) thm, thm);
fun check_func verbose thy thm = case try (dest_func thy) thm
of SOME (c_ty as (c, ty), args) =>
let
val _ =
if has_duplicates (op =)
((fold o fold_aterms) (fn Var (v, _) => cons v | _ => I) args [])
then bad_thm "Repeated variables on left hand side of function equation" thm
else ()
val is_classop = (is_some o AxClass.class_of_param thy) c;
val const = CodegenConsts.norm_of_typ thy c_ty;
val ty_decl = CodegenConsts.disc_typ_of_const thy
(snd o CodegenConsts.typ_of_inst thy) const;
val string_of_typ = setmp show_sorts true (Sign.string_of_typ thy);
in if Sign.typ_equiv thy (ty_decl, ty)
then (const, thm)
else (if is_classop orelse (!strict_functyp andalso not
(Sign.typ_equiv thy (Type.strip_sorts ty_decl, Type.strip_sorts ty)))
then error else (if verbose then warning else K ()) #> K (const, thm))
("Type\n" ^ string_of_typ ty
^ "\nof function theorem\n"
^ string_of_thm thm
^ "\nis strictly less general than declared function type\n"
^ string_of_typ ty_decl)
end
| NONE => bad_thm "Not a function equation" thm;
fun check_typ_classop thy thm =
let
val (c_ty as (c, ty), _) = dest_func thy thm;
in case AxClass.class_of_param thy c
of SOME class => let
val const = CodegenConsts.norm_of_typ thy c_ty;
val ty_decl = CodegenConsts.disc_typ_of_const thy
(snd o CodegenConsts.typ_of_inst thy) const;
val string_of_typ = setmp show_sorts true (Sign.string_of_typ thy);
in if Sign.typ_equiv thy (ty_decl, ty)
then thm
else error
("Type\n" ^ string_of_typ ty
^ "\nof function theorem\n"
^ string_of_thm thm
^ "\nis strictly less general than declared function type\n"
^ string_of_typ ty_decl)
end
| NONE => thm
end;
fun mk_func thy raw_thm =
mk_rew thy raw_thm
|> map (check_func true thy);
fun get_prim_def_funcs thy c =
let
fun constrain thm0 thm = case AxClass.class_of_param thy (fst c)
of SOME _ =>
let
val ty_decl = CodegenConsts.disc_typ_of_classop thy c;
val max = maxidx_of_typ ty_decl + 1;
val thm = Thm.incr_indexes max thm;
val ty = typ_func thy thm;
val (env, _) = Sign.typ_unify thy (ty_decl, ty) (Vartab.empty, max);
val instT = Vartab.fold (fn (x_i, (sort, ty)) =>
cons (Thm.ctyp_of thy (TVar (x_i, sort)), Thm.ctyp_of thy ty)) env [];
in Thm.instantiate (instT, []) thm end
| NONE => thm
in case CodegenConsts.find_def thy c
of SOME ((_, thm), _) =>
thm
|> Thm.transfer thy
|> try (map snd o mk_func thy)
|> these
|> map (constrain thm)
| NONE => []
end;
(* pairs of (selected, deleted) function theorems *)
type sdthms = lthms * thm list;
fun add_drop_redundant thm thms =
let
val thy = Context.check_thy (Thm.theory_of_thm thm);
val pattern = (fst o Logic.dest_equals o Drule.plain_prop_of) thm;
fun matches thm' = if (curry (Pattern.matches thy) pattern o
fst o Logic.dest_equals o Drule.plain_prop_of) thm'
then (warning ("Dropping redundant function theorem\n" ^ string_of_thm thm'); true)
else false
in thm :: filter_out matches thms end;
fun add_thm thm (sels, dels) =
(Susp.value (add_drop_redundant thm (Susp.force sels)), remove eq_thm thm dels);
fun add_lthms lthms (sels, []) =
(lazy (fn () => fold add_drop_redundant
(Susp.force lthms) (Susp.force sels)), [])
| add_lthms lthms (sels, dels) =
fold add_thm (Susp.force lthms) (sels, dels);
fun del_thm thm (sels, dels) =
(Susp.value (remove eq_thm thm (Susp.force sels)), thm :: dels);
fun pretty_sdthms ctxt (sels, _) = pretty_lthms ctxt sels;
fun merge_sdthms c ((sels1, dels1), (sels2, dels2)) =
let
val (dels_t, dels) = merge_thms (dels1, dels2);
in if dels_t
then let
val (_, sels) = merge_thms (Susp.force sels1, subtract eq_thm dels1 (Susp.force sels2))
val (_, dels) = merge_thms (dels1, subtract eq_thm (Susp.force sels1) dels2)
in (true, ((lazy o K) sels, dels)) end
else let
val (sels_t, sels) = merge_lthms (sels1, sels2)
in (sels_t, (sels, dels)) end
end;
(** data structures **)
structure Consttab = CodegenConsts.Consttab;
datatype preproc = Preproc of {
inlines: thm list,
inline_procs: (serial * (theory -> cterm list -> thm list)) list,
constrains: (serial * (theory -> term list -> (indexname * sort) list)) list,
preprocs: (serial * (theory -> thm list -> thm list)) list
};
fun mk_preproc ((inlines, inline_procs), (constrains, preprocs)) =
Preproc { inlines = inlines, inline_procs = inline_procs, constrains = constrains, preprocs = preprocs };
fun map_preproc f (Preproc { inlines, inline_procs, constrains, preprocs }) =
mk_preproc (f ((inlines, inline_procs), (constrains, preprocs)));
fun merge_preproc (Preproc { inlines = inlines1, inline_procs = inline_procs1, constrains = constrains1 , preprocs = preprocs1 },
Preproc { inlines = inlines2, inline_procs = inline_procs2, constrains = constrains2 , preprocs = preprocs2 }) =
let
val (touched1, inlines) = merge_thms (inlines1, inlines2);
val (touched2, inline_procs) = merge_alist (op =) (K true) (inline_procs1, inline_procs2);
val (touched3, constrains) = merge_alist (op =) (K true) (constrains1, constrains2);
val (touched4, preprocs) = merge_alist (op =) (K true) (preprocs1, preprocs2);
in (touched1 orelse touched2 orelse touched3 orelse touched4,
mk_preproc ((inlines, inline_procs), (constrains, preprocs))) end;
fun join_func_thms (tabs as (tab1, tab2)) =
let
val cs1 = Consttab.keys tab1;
val cs2 = Consttab.keys tab2;
val cs' = filter (member CodegenConsts.eq_const cs2) cs1;
val cs'' = subtract (op =) cs' cs1 @ subtract (op =) cs' cs2;
val cs''' = ref [] : CodegenConsts.const list ref;
fun merge c x = let val (touched, thms') = merge_sdthms c x in
(if touched then cs''' := cons c (!cs''') else (); thms') end;
in (cs'' @ !cs''', Consttab.join merge tabs) end;
fun merge_funcs (thms1, thms2) =
let
val (consts, thms) = join_func_thms (thms1, thms2);
in (SOME consts, thms) end;
val eq_string = op = : string * string -> bool;
fun eq_dtyp (((vs1, cs1), _), ((vs2, cs2), _)) =
gen_eq_set (eq_pair eq_string (gen_eq_set eq_string)) (vs1, vs2)
andalso gen_eq_set (eq_pair eq_string (eq_list (is_equal o Term.typ_ord))) (cs1, cs2);
fun merge_dtyps (tabs as (tab1, tab2)) =
let
val tycos1 = Symtab.keys tab1;
val tycos2 = Symtab.keys tab2;
val tycos' = filter (member eq_string tycos2) tycos1;
val touched = not (gen_eq_set (op =) (tycos1, tycos2) andalso
gen_eq_set (eq_pair (op =) (eq_dtyp))
(AList.make (the o Symtab.lookup tab1) tycos',
AList.make (the o Symtab.lookup tab2) tycos'));
in (touched, Symtab.merge (K true) tabs) end;
datatype spec = Spec of {
funcs: sdthms Consttab.table,
dconstrs: string Consttab.table,
dtyps: (((string * sort) list * (string * typ list) list) * lthms) Symtab.table
};
fun mk_spec ((funcs, dconstrs), dtyps) =
Spec { funcs = funcs, dconstrs = dconstrs, dtyps = dtyps };
fun map_spec f (Spec { funcs = funcs, dconstrs = dconstrs, dtyps = dtyps }) =
mk_spec (f ((funcs, dconstrs), dtyps));
fun merge_spec (Spec { funcs = funcs1, dconstrs = dconstrs1, dtyps = dtyps1 },
Spec { funcs = funcs2, dconstrs = dconstrs2, dtyps = dtyps2 }) =
let
val (touched_cs, funcs) = merge_funcs (funcs1, funcs2);
val dconstrs = Consttab.merge (K true) (dconstrs1, dconstrs2);
val (touched', dtyps) = merge_dtyps (dtyps1, dtyps2);
val touched = if touched' then NONE else touched_cs;
in (touched, mk_spec ((funcs, dconstrs), dtyps)) end;
datatype exec = Exec of {
preproc: preproc,
spec: spec
};
fun mk_exec (preproc, spec) =
Exec { preproc = preproc, spec = spec };
fun map_exec f (Exec { preproc = preproc, spec = spec }) =
mk_exec (f (preproc, spec));
fun merge_exec (Exec { preproc = preproc1, spec = spec1 },
Exec { preproc = preproc2, spec = spec2 }) =
let
val (touched', preproc) = merge_preproc (preproc1, preproc2);
val (touched_cs, spec) = merge_spec (spec1, spec2);
val touched = if touched' then NONE else touched_cs;
in (touched, mk_exec (preproc, spec)) end;
val empty_exec = mk_exec (mk_preproc (([], []), ([], [])),
mk_spec ((Consttab.empty, Consttab.empty), Symtab.empty));
fun the_preproc (Exec { preproc = Preproc x, ...}) = x;
fun the_spec (Exec { spec = Spec x, ...}) = x;
val the_funcs = #funcs o the_spec;
val the_dcontrs = #dconstrs o the_spec;
val the_dtyps = #dtyps o the_spec;
val map_preproc = map_exec o apfst o map_preproc;
val map_funcs = map_exec o apsnd o map_spec o apfst o apfst;
val map_dconstrs = map_exec o apsnd o map_spec o apfst o apsnd;
val map_dtyps = map_exec o apsnd o map_spec o apsnd;
(** code data structures **)
(*private copy avoids potential conflict of table exceptions*)
structure Datatab = TableFun(type key = int val ord = int_ord);
(* data slots *)
local
type kind = {
name: string,
empty: Object.T,
merge: Pretty.pp -> Object.T * Object.T -> Object.T,
purge: CodegenConsts.const list option -> Object.T -> Object.T
};
val kinds = ref (Datatab.empty: kind Datatab.table);
fun invoke meth_name meth_fn k =
(case Datatab.lookup (! kinds) k of
SOME kind => meth_fn kind |> transform_failure (fn exn =>
EXCEPTION (exn, "Code data method " ^ #name kind ^ "." ^ meth_name ^ " failed"))
| NONE => sys_error ("Invalid code data identifier " ^ string_of_int k));
in
fun invoke_name k = invoke "name" (K o #name) k ();
fun invoke_empty k = invoke "empty" (K o #empty) k ();
fun invoke_merge pp = invoke "merge" (fn kind => #merge kind pp);
fun invoke_purge cs = invoke "purge" (fn kind => #purge kind cs);
fun declare name empty merge purge =
let
val k = serial ();
val kind = {name = name, empty = empty, merge = merge, purge = purge};
val _ = conditional (Datatab.exists (equal name o #name o #2) (! kinds)) (fn () =>
warning ("Duplicate declaration of code data " ^ quote name));
val _ = change kinds (Datatab.update (k, kind));
in k end;
end; (*local*)
(* theory store *)
type data = Object.T Datatab.table;
structure CodeData = TheoryDataFun
(struct
val name = "Pure/codegen_data";
type T = exec * data ref;
val empty = (empty_exec, ref Datatab.empty : data ref);
fun copy (exec, data) = (exec, ref (! data));
val extend = copy;
fun merge pp ((exec1, data1), (exec2, data2)) =
let
val (touched, exec) = merge_exec (exec1, exec2);
val data1' = Datatab.map' (invoke_purge touched) (! data1);
val data2' = Datatab.map' (invoke_purge touched) (! data2);
val data = Datatab.join (invoke_merge pp) (data1', data2');
in (exec, ref data) end;
fun print thy (exec, _) =
let
val ctxt = ProofContext.init thy;
fun pretty_func (s, lthms) =
(Pretty.block o Pretty.fbreaks) (
Pretty.str s :: pretty_sdthms ctxt lthms
);
fun pretty_dtyp (s, cos) =
(Pretty.block o Pretty.breaks) (
Pretty.str s
:: Pretty.str "="
:: Pretty.separate "|" (map (fn (c, []) => Pretty.str c
| (c, tys) =>
Pretty.block
(Pretty.str c :: Pretty.brk 1 :: Pretty.str "of" :: Pretty.brk 1
:: Pretty.breaks (map (Pretty.quote o Sign.pretty_typ thy) tys))) cos)
)
val inlines = (#inlines o the_preproc) exec;
val funs = the_funcs exec
|> Consttab.dest
|> (map o apfst) (CodegenConsts.string_of_const thy)
|> sort (string_ord o pairself fst);
val dtyps = the_dtyps exec
|> Symtab.dest
|> map (fn (dtco, ((vs, cos), _)) => (Sign.string_of_typ thy (Type (dtco, map TFree vs)), cos))
|> sort (string_ord o pairself fst)
in
(Pretty.writeln o Pretty.block o Pretty.fbreaks) ([
Pretty.str "code theorems:",
Pretty.str "function theorems:" ] @
map pretty_func funs @ [
Pretty.block (
Pretty.str "inlined theorems:"
:: Pretty.fbrk
:: (Pretty.fbreaks o map (ProofContext.pretty_thm ctxt)) inlines
),
Pretty.block (
Pretty.str "datatypes:"
:: Pretty.fbrk
:: (Pretty.fbreaks o map pretty_dtyp) dtyps
)]
)
end;
end);
fun print_thms thy = CodeData.print thy;
fun init k = CodeData.map
(fn (exec, data) => (exec, ref (Datatab.update (k, invoke_empty k) (! data))));
fun get k dest data =
(case Datatab.lookup data k of
SOME x => (dest x handle Match =>
error ("Failed to access code data " ^ quote (invoke_name k)))
| NONE => error ("Uninitialized code data " ^ quote (invoke_name k)));
fun put k mk x = Datatab.update (k, mk x);
fun map_exec_purge touched f =
CodeData.map (fn (exec, data) =>
(f exec, ref (Datatab.map' (invoke_purge touched) (! data))));
val get_exec = fst o CodeData.get;
val _ = Context.add_setup CodeData.init;
(** theorem transformation and certification **)
fun rewrite_func rewrites thm =
let
val rewrite = Tactic.rewrite false rewrites;
val (ct_eq, [ct_lhs, ct_rhs]) = (Drule.strip_comb o Thm.cprop_of) thm;
val Const ("==", _) = Thm.term_of ct_eq;
val (ct_f, ct_args) = Drule.strip_comb ct_lhs;
val rhs' = rewrite ct_rhs;
val args' = map rewrite ct_args;
val lhs' = Thm.symmetric (fold (fn th1 => fn th2 => Thm.combination th2 th1)
args' (Thm.reflexive ct_f));
in
Thm.transitive (Thm.transitive lhs' thm) rhs'
end handle Bind => raise ERROR "rewrite_func"
fun common_typ_funcs thy [] = []
| common_typ_funcs thy [thm] = [thm]
| common_typ_funcs thy thms =
let
fun incr_thm thm max =
let
val thm' = incr_indexes max thm;
val max' = (maxidx_of_typ o fastype_of o Drule.plain_prop_of) thm' + 1;
in (thm', max') end;
val (thms', maxidx) = fold_map incr_thm thms 0;
val (ty1::tys) = map (typ_func thy) thms;
fun unify ty env = Sign.typ_unify thy (ty1, ty) env
handle Type.TUNIFY =>
error ("Type unificaton failed, while unifying function equations\n"
^ (cat_lines o map Display.string_of_thm) thms
^ "\nwith types\n"
^ (cat_lines o map (Sign.string_of_typ thy)) (ty1 :: tys));
val (env, _) = fold unify tys (Vartab.empty, maxidx)
val instT = Vartab.fold (fn (x_i, (sort, ty)) =>
cons (Thm.ctyp_of thy (TVar (x_i, sort)), Thm.ctyp_of thy ty)) env [];
in map (Thm.instantiate (instT, [])) thms end;
fun certify_const thy c c_thms =
let
fun cert (c', thm) = if CodegenConsts.eq_const (c, c')
then thm else bad_thm ("Wrong head of function equation,\nexpected constant "
^ CodegenConsts.string_of_const thy c) thm
in map cert c_thms end;
fun mk_cos tyco vs cos =
let
val dty = Type (tyco, map TFree vs);
fun mk_co (co, tys) = (Const (co, (tys ---> dty)), map I tys);
in map mk_co cos end;
fun mk_co_args (co, tys) ctxt =
let
val names = Name.invents ctxt "a" (length tys);
val ctxt' = fold Name.declare names ctxt;
val vs = map2 (fn v => fn ty => Free (fst (v, 0), I ty)) names tys;
in (vs, ctxt') end;
fun check_freeness thy cos thms =
let
val props = AList.make Drule.plain_prop_of thms;
fun sym_product [] = []
| sym_product (x::xs) = map (pair x) xs @ sym_product xs;
val quodlibet =
let
val judg = ObjectLogic.fixed_judgment (the_context ()) "x";
val [free] = fold_aterms (fn v as Free _ => cons v | _ => I) judg [];
val judg' = Term.subst_free [(free, Bound 0)] judg;
val prop = Type ("prop", []);
val prop' = fastype_of judg';
in
Const ("all", (prop' --> prop) --> prop) $ Abs ("P", prop', judg')
end;
fun check_inj (co, []) =
NONE
| check_inj (co, tys) =
let
val ((xs, ys), _) = Name.context
|> mk_co_args (co, tys)
||>> mk_co_args (co, tys);
val prem = Logic.mk_equals
(list_comb (co, xs), list_comb (co, ys));
val concl = Logic.mk_conjunction_list
(map2 (curry Logic.mk_equals) xs ys);
val t = Logic.mk_implies (prem, concl);
in case find_first (curry Term.could_unify t o snd) props
of SOME (thm, _) => SOME thm
| NONE => error ("Could not prove injectiveness statement\n"
^ Sign.string_of_term thy t
^ "\nfor constructor "
^ CodegenConsts.string_of_const_typ thy (dest_Const co)
^ "\nwith theorems\n" ^ cat_lines (map string_of_thm thms))
end;
fun check_dist ((co1, tys1), (co2, tys2)) =
let
val ((xs1, xs2), _) = Name.context
|> mk_co_args (co1, tys1)
||>> mk_co_args (co2, tys2);
val prem = Logic.mk_equals
(list_comb (co1, xs1), list_comb (co2, xs2));
val t = Logic.mk_implies (prem, quodlibet);
in case find_first (curry Term.could_unify t o snd) props
of SOME (thm, _) => thm
| NONE => error ("Could not prove distinctness statement\n"
^ Sign.string_of_term thy t
^ "\nfor constructors "
^ CodegenConsts.string_of_const_typ thy (dest_Const co1)
^ " and "
^ CodegenConsts.string_of_const_typ thy (dest_Const co2)
^ "\nwith theorems\n" ^ cat_lines (map string_of_thm thms))
end;
in (map_filter check_inj cos, map check_dist (sym_product cos)) end;
fun certify_datatype thy dtco cs thms =
(op @) (check_freeness thy cs thms);
(** interfaces **)
fun add_func thm thy =
let
val thms = mk_func thy thm;
val cs = map fst thms;
in
map_exec_purge (SOME cs) (map_funcs
(fold (fn (c, thm) => Consttab.map_default
(c, (Susp.value [], [])) (add_thm thm)) thms)) thy
end;
fun del_func thm thy =
let
val thms = mk_func thy thm;
val cs = map fst thms;
in
map_exec_purge (SOME cs) (map_funcs
(fold (fn (c, thm) => Consttab.map_entry c
(del_thm thm)) thms)) thy
end;
fun add_funcl (c, lthms) thy =
let
val c' = CodegenConsts.norm thy c;
val lthms' = certificate thy (fn thy => certify_const thy c' o maps (mk_func thy)) lthms;
in
map_exec_purge (SOME [c]) (map_funcs (Consttab.map_default (c', (Susp.value [], []))
(add_lthms lthms'))) thy
end;
fun add_datatype (tyco, (vs_cos as (vs, cos), lthms)) thy =
let
val cs = mk_cos tyco vs cos;
val consts = map (CodegenConsts.norm_of_typ thy o dest_Const o fst) cs;
val add =
map_dtyps (Symtab.update_new (tyco,
(vs_cos, certificate thy (fn thy => certify_datatype thy tyco cs) lthms)))
#> map_dconstrs (fold (fn c => Consttab.update (c, tyco)) consts)
in map_exec_purge (SOME consts) add thy end;
fun del_datatype tyco thy =
let
val SOME ((vs, cos), _) = Symtab.lookup ((the_dtyps o get_exec) thy) tyco;
val cs = mk_cos tyco vs cos;
val consts = map (CodegenConsts.norm_of_typ thy o dest_Const o fst) cs;
val del =
map_dtyps (Symtab.delete tyco)
#> map_dconstrs (fold Consttab.delete consts)
in map_exec_purge (SOME consts) del thy end;
fun add_inline thm thy =
(map_exec_purge NONE o map_preproc o apfst o apfst) (fold (insert eq_thm) (mk_rew thy thm)) thy;
fun del_inline thm thy =
(map_exec_purge NONE o map_preproc o apfst o apfst) (fold (remove eq_thm) (mk_rew thy thm)) thy ;
fun add_inline_proc f =
(map_exec_purge NONE o map_preproc o apfst o apsnd) (cons (serial (), f));
fun add_constrains f =
(map_exec_purge NONE o map_preproc o apsnd o apfst) (cons (serial (), f));
fun add_preproc f =
(map_exec_purge NONE o map_preproc o apsnd o apsnd) (cons (serial (), f));
local
fun gen_apply_constrain prep post const_typ thy fs x =
let
val ts = prep x;
val tvars = (fold o fold_aterms) Term.add_tvars ts [];
val consts = (fold o fold_aterms) (fn Const c => cons c | _ => I) ts [];
fun insts_of const_typ (c, ty) =
let
val ty_decl = const_typ (c, ty);
val env = Vartab.dest (Type.raw_match (ty_decl, ty) Vartab.empty);
val insts = map_filter
(fn (v, (sort, TVar (_, sort'))) =>
if Sorts.sort_le (Sign.classes_of thy) (sort, sort')
then NONE else SOME (v, sort)
| _ => NONE) env
in
insts
end
val const_insts = case const_typ
of NONE => []
| SOME const_typ => maps (insts_of const_typ) consts;
fun add_inst (v, sort') =
let
val sort = (the o AList.lookup (op =) tvars) v
in
AList.map_default (op =) (v, (sort, sort))
(apsnd (fn sort => Sorts.inter_sort (Sign.classes_of thy) (sort, sort')))
end;
val inst =
[]
|> fold (fn f => fold add_inst (f thy ts)) fs
|> fold add_inst const_insts;
in
post thy inst x
end;
val apply_constrain = gen_apply_constrain (maps
((fn (args, rhs) => rhs :: (snd o strip_comb) args) o Logic.dest_equals o Thm.prop_of))
(fn thy => fn inst => map (check_typ_classop thy o Thm.instantiate (map (fn (v, (sort, sort')) =>
(Thm.ctyp_of thy (TVar (v, sort)), Thm.ctyp_of thy (TVar (v, sort')))
) inst, []))) NONE;
fun apply_constrain_cterm thy const_typ = gen_apply_constrain (single o Thm.term_of)
(fn thy => fn inst => pair inst o Thm.cterm_of thy o map_types
(TermSubst.instantiateT (map (fn (v, (sort, sort')) => ((v, sort), TVar (v, sort'))) inst)) o Thm.term_of) (SOME const_typ) thy;
fun gen_apply_inline_proc prep post thy f x =
let
val cts = prep x;
val rews = map (check_rew thy) (f thy cts);
in post rews x end;
val apply_inline_proc = gen_apply_inline_proc (maps
((fn [args, rhs] => rhs :: (snd o Drule.strip_comb) args) o snd o Drule.strip_comb o Thm.cprop_of))
(fn rews => map (rewrite_func rews));
val apply_inline_proc_cterm = gen_apply_inline_proc single
(Tactic.rewrite false);
fun apply_preproc thy f [] = []
| apply_preproc thy f (thms as (thm :: _)) =
let
val thms' = f thy thms;
val c = (CodegenConsts.norm_of_typ thy o fst o dest_func thy) thm;
in (certify_const thy c o map (mk_head thy)) thms' end;
fun cmp_thms thy =
make_ord (fn (thm1, thm2) => not (Sign.typ_instance thy (typ_func thy thm1, typ_func thy thm2)));
fun rhs_conv conv thm =
let
val thm' = (conv o snd o Drule.dest_equals o Thm.cprop_of) thm;
in Thm.transitive thm thm' end
fun drop_classes thy inst thm =
let
val unconstr = map (fn (v, (_, sort')) =>
(Thm.ctyp_of thy o TVar) (v, sort')) inst;
val instmap = map (fn (v, (sort, _)) =>
pairself (Thm.ctyp_of thy o TVar) ((v, []), (v, sort))) inst;
in
thm
|> fold Thm.unconstrainT unconstr
|> Thm.instantiate (instmap, [])
|> Tactic.rule_by_tactic ((REPEAT o CHANGED o ALLGOALS o Tactic.resolve_tac) (AxClass.class_intros thy))
end;
in
fun preprocess thy thms =
thms
|> fold (fn (_, f) => apply_preproc thy f) ((#preprocs o the_preproc o get_exec) thy)
|> map (rewrite_func ((#inlines o the_preproc o get_exec) thy))
|> apply_constrain thy ((map snd o #constrains o the_preproc o get_exec) thy)
|> map (rewrite_func ((#inlines o the_preproc o get_exec) thy))
|> fold (fn (_, f) => apply_inline_proc thy f) ((#inline_procs o the_preproc o get_exec) thy)
|> map (snd o check_func false thy)
|> sort (cmp_thms thy)
|> common_typ_funcs thy;
fun preprocess_cterm thy const_typ ct =
ct
|> apply_constrain_cterm thy const_typ ((map snd o #constrains o the_preproc o get_exec) thy)
|-> (fn inst =>
Thm.reflexive
#> fold (rhs_conv o Tactic.rewrite false o single) ((#inlines o the_preproc o get_exec) thy)
#> fold (fn (_, f) => rhs_conv (apply_inline_proc_cterm thy f)) ((#inline_procs o the_preproc o get_exec) thy)
#> (fn thm => (drop_classes thy inst thm, ((fn xs => nth xs 1) o snd o Drule.strip_comb o Thm.cprop_of) thm))
);
end; (*local*)
fun these_funcs thy c =
let
val funcs_1 =
Consttab.lookup ((the_funcs o get_exec) thy) c
|> Option.map (Susp.force o fst)
|> these
|> map (Thm.transfer thy);
val funcs_2 = case funcs_1
of [] => get_prim_def_funcs thy c
| xs => xs;
fun drop_refl thy = filter_out (is_equal o Term.fast_term_ord o Logic.dest_equals
o ObjectLogic.drop_judgment thy o Drule.plain_prop_of);
in
funcs_2
|> preprocess thy
|> drop_refl thy
end;
fun get_datatype thy tyco =
Symtab.lookup ((the_dtyps o get_exec) thy) tyco
|> Option.map (fn (spec, thms) => (Susp.force thms; spec));
fun get_datatype_of_constr thy c =
Consttab.lookup ((the_dcontrs o get_exec) thy) c
|> (Option.map o tap) (fn dtco => get_datatype thy dtco);
(** code attributes **)
local
fun add_simple_attribute (name, f) =
(Codegen.add_attribute name o (Scan.succeed o Thm.declaration_attribute))
(Context.map_theory o f);
in
val _ = map (Context.add_setup o add_simple_attribute) [
("func", add_func),
("nofunc", del_func),
("unfold", (fn thm => Codegen.add_unfold thm #> add_inline thm)),
("inline", add_inline),
("noinline", del_inline)
]
end; (*local*)
end; (*struct*)
(** type-safe interfaces for data depedent on executable content **)
signature CODE_DATA_ARGS =
sig
val name: string
type T
val empty: T
val merge: Pretty.pp -> T * T -> T
val purge: CodegenConsts.const list option -> T -> T
end;
signature CODE_DATA =
sig
type T
val init: theory -> theory
val get: theory -> T
val change: theory -> (T -> T) -> T
val change_yield: theory -> (T -> 'a * T) -> 'a * T
end;
functor CodeDataFun(Data: CODE_DATA_ARGS): CODE_DATA =
struct
type T = Data.T;
exception Data of T;
fun dest (Data x) = x
val kind = CodegenData.declare Data.name (Data Data.empty)
(fn pp => fn (Data x1, Data x2) => Data (Data.merge pp (x1, x2)))
(fn cs => fn Data x => Data (Data.purge cs x));
val init = CodegenData.init kind;
fun get thy = CodegenData.get kind dest ((! o snd o CodegenData.CodeData.get) thy);
fun change thy f =
let
val data_ref = (snd o CodegenData.CodeData.get) thy;
val x = (f o CodegenData.get kind dest o !) data_ref;
val data = CodegenData.put kind Data x (! data_ref);
in (data_ref := data; x) end;
fun change_yield thy f =
let
val data_ref = (snd o CodegenData.CodeData.get) thy;
val (y, x) = (f o CodegenData.get kind dest o !) data_ref;
val data = CodegenData.put kind Data x (! data_ref);
in (data_ref := data; (y, x)) end;
end;
structure CodegenData : CODEGEN_DATA =
struct
open CodegenData;
end;