(* Title: Pure/Thy/export_theory.ML
Author: Makarius
Export foundational theory content.
*)
signature EXPORT_THEORY =
sig
val setup_presentation: (Thy_Info.presentation_context -> theory -> unit) -> unit
val export_body: theory -> string -> XML.body -> unit
end;
structure Export_Theory: EXPORT_THEORY =
struct
(* names for bound variables *)
local
fun declare_names (Abs (_, _, b)) = declare_names b
| declare_names (t $ u) = declare_names t #> declare_names u
| declare_names (Const (c, _)) = Name.declare (Long_Name.base_name c)
| declare_names (Free (x, _)) = Name.declare x
| declare_names _ = I;
fun variant_abs bs (Abs (x, T, t)) =
let
val names = fold Name.declare bs (declare_names t Name.context);
val x' = #1 (Name.variant x names);
val t' = variant_abs (x' :: bs) t;
in Abs (x', T, t') end
| variant_abs bs (t $ u) = variant_abs bs t $ variant_abs bs u
| variant_abs _ t = t;
in
val named_bounds = variant_abs [];
end;
(* general setup *)
fun setup_presentation f =
Theory.setup (Thy_Info.add_presentation (fn context => fn thy =>
if Options.bool (#options context) "export_theory" then f context thy else ()));
fun export_body thy name body =
Export.export thy ("theory/" ^ name) (Buffer.chunks (YXML.buffer_body body Buffer.empty));
(* presentation *)
val _ = setup_presentation (fn {adjust_pos, ...} => fn thy =>
let
val parents = Theory.parents_of thy;
val rep_tsig = Type.rep_tsig (Sign.tsig_of thy);
val thy_ctxt = Proof_Context.init_global thy;
(* entities *)
fun entity_markup space name =
let
val xname = Name_Space.extern_shortest thy_ctxt space name;
val {serial, pos, ...} = Name_Space.the_entry space name;
val props =
Position.offset_properties_of (adjust_pos pos) @
Position.id_properties_of pos @
Markup.serial_properties serial;
in (Markup.entityN, (Markup.nameN, name) :: (Markup.xnameN, xname) :: props) end;
fun export_entities export_name export get_space decls =
let val elems =
let
val parent_spaces = map get_space parents;
val space = get_space thy;
in
(decls, []) |-> fold (fn (name, decl) =>
if exists (fn space => Name_Space.declared space name) parent_spaces then I
else
(case export name decl of
NONE => I
| SOME body =>
cons (#serial (Name_Space.the_entry space name),
XML.Elem (entity_markup space name, body))))
|> sort (int_ord o apply2 #1) |> map #2
end;
in if null elems then () else export_body thy export_name elems end;
(* infix syntax *)
fun get_infix_const ctxt = Syntax.get_infix (Proof_Context.syn_of ctxt) o Lexicon.mark_const;
fun get_infix_type ctxt = Syntax.get_infix (Proof_Context.syn_of ctxt) o Lexicon.mark_type;
fun encode_infix {assoc, delim, pri} =
let
val ass =
(case assoc of
Syntax_Ext.No_Assoc => 0
| Syntax_Ext.Left_Assoc => 1
| Syntax_Ext.Right_Assoc => 2);
open XML.Encode Term_XML.Encode;
in triple int string int (ass, delim, pri) end;
(* types *)
val encode_type =
let open XML.Encode Term_XML.Encode
in triple (option encode_infix) (list string) (option typ) end;
fun export_type c (Type.LogicalType n) =
SOME (encode_type (get_infix_type thy_ctxt c, Name.invent Name.context Name.aT n, NONE))
| export_type c (Type.Abbreviation (args, U, false)) =
SOME (encode_type (get_infix_type thy_ctxt c, args, SOME U))
| export_type _ _ = NONE;
val _ =
export_entities "types" export_type Sign.type_space
(Name_Space.dest_table (#types rep_tsig));
(* consts *)
val encode_const =
let open XML.Encode Term_XML.Encode in
pair (option encode_infix) (pair (list string) (pair typ (option (term o named_bounds))))
end;
fun export_const c (T, abbrev) =
let
val syntax = get_infix_const thy_ctxt c;
val T' = T |> Logic.unvarifyT_global |> Type.strip_sorts;
val abbrev' = abbrev |> Option.map (Logic.unvarify_global #> map_types Type.strip_sorts);
val args = map (#1 o dest_TFree) (Consts.typargs (Sign.consts_of thy) (c, T'));
in SOME (encode_const (syntax, (args, (T', abbrev')))) end;
val _ =
export_entities "consts" export_const Sign.const_space
(#constants (Consts.dest (Sign.consts_of thy)));
(* axioms and facts *)
fun standard_prop_of raw_thm =
let
val thm = raw_thm
|> Thm.transfer thy
|> Thm.check_hyps (Context.Theory thy)
|> Thm.strip_shyps;
val prop = thm
|> Thm.full_prop_of
|> Term_Subst.zero_var_indexes;
in (Thm.extra_shyps thm, prop) end;
fun encode_prop (Ss, prop) =
let
val prop' = Logic.unvarify_global (named_bounds prop);
val typargs = rev (Term.add_tfrees prop' []);
val sorts = Name.invent (Name.make_context (map #1 typargs)) Name.aT (length Ss) ~~ Ss;
val args = rev (Term.add_frees prop' []);
in
(sorts @ typargs, args, prop') |>
let open XML.Encode Term_XML.Encode
in triple (list (pair string sort)) (list (pair string typ)) term end
end;
val encode_fact = XML.Encode.list encode_prop o map standard_prop_of;
val _ =
export_entities "axioms" (fn _ => fn t => SOME (encode_prop ([], t))) Theory.axiom_space
(Theory.axioms_of thy);
val _ =
export_entities "facts" (K (SOME o encode_fact)) (Facts.space_of o Global_Theory.facts_of)
(Facts.dest_static true [] (Global_Theory.facts_of thy));
(* type classes *)
val encode_class =
let open XML.Encode Term_XML.Encode
in pair (list (pair string typ)) (list (term o named_bounds)) end;
fun export_class name =
(case try (Axclass.get_info thy) name of
NONE => ([], [])
| SOME {params, axioms, ...} =>
(params, map (Logic.unvarify_global o Thm.full_prop_of) axioms))
|> encode_class |> SOME;
val _ =
export_entities "classes" (fn name => fn () => export_class name)
Sign.class_space (map (rpair ()) (Graph.keys (Sorts.classes_of (#2 (#classes rep_tsig)))));
(* sort algebra *)
val {classrel, arities} =
Sorts.dest_algebra (map (#2 o #classes o Type.rep_tsig o Sign.tsig_of) parents)
(#2 (#classes rep_tsig));
val encode_classrel =
let open XML.Encode
in list (pair string (list string)) end;
val encode_arities =
let open XML.Encode Term_XML.Encode
in list (triple string (list sort) string) end;
val _ = if null classrel then () else export_body thy "classrel" (encode_classrel classrel);
val _ = if null arities then () else export_body thy "arities" (encode_arities arities);
(* locales *)
fun encode_locale ({type_params, params, asm, defs}: Locale.content) =
let
val args = map #1 params;
val typargs = type_params @ rev (fold Term.add_tfrees (map Free args @ the_list asm) []);
val encode =
let open XML.Encode Term_XML.Encode in
pair (list (pair string sort))
(pair (list (pair string typ))
(pair (option term) (list term)))
end;
in encode (typargs, (args, (asm, defs))) end;
val _ =
export_entities "locales" (fn _ => SOME o encode_locale) Locale.locale_space
(Locale.dest_locales thy);
(* parents *)
val _ =
export_body thy "parents"
(XML.Encode.string (cat_lines (map Context.theory_long_name parents)));
in () end);
end;