author | wenzelm |
Tue, 26 Mar 2019 13:25:32 +0100 | |
changeset 69988 | 6fa51a36b7f7 |
parent 69784 | 24bbc4e30e5b |
child 69992 | bd3c10813cc4 |
permissions | -rw-r--r-- |
68154 | 1 |
(* Title: Pure/Thy/export_theory.ML |
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Author: Makarius |
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Export foundational theory content and locale/class structure. |
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*) |
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signature EXPORT_THEORY = |
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sig |
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val setup_presentation: (Thy_Info.presentation_context -> theory -> unit) -> unit |
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val export_body: theory -> string -> XML.body -> unit |
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end; |
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structure Export_Theory: EXPORT_THEORY = |
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struct |
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(* approximative syntax *) |
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val get_syntax = Syntax.get_approx o Proof_Context.syn_of; |
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fun get_syntax_type ctxt = get_syntax ctxt o Lexicon.mark_type; |
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fun get_syntax_const ctxt = get_syntax ctxt o Lexicon.mark_const; |
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fun get_syntax_fixed ctxt = get_syntax ctxt o Lexicon.mark_fixed; |
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fun get_syntax_param ctxt loc x = |
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let val thy = Proof_Context.theory_of ctxt in |
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if Class.is_class thy loc then |
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(case AList.lookup (op =) (Class.these_params thy [loc]) x of |
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NONE => NONE |
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| SOME (_, (c, _)) => get_syntax_const ctxt c) |
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else get_syntax_fixed ctxt x |
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end; |
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val encode_syntax = |
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XML.Encode.variant |
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[fn NONE => ([], []), |
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fn SOME (Syntax.Prefix delim) => ([delim], []), |
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fn SOME (Syntax.Infix {assoc, delim, pri}) => |
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let |
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val ass = |
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(case assoc of |
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Printer.No_Assoc => 0 |
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| Printer.Left_Assoc => 1 |
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| Printer.Right_Assoc => 2); |
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open XML.Encode Term_XML.Encode; |
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in ([], triple int string int (ass, delim, pri)) end]; |
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parents:
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(* standardization of variables: only frees and named bounds *) |
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local |
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fun declare_names (Abs (_, _, b)) = declare_names b |
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| declare_names (t $ u) = declare_names t #> declare_names u |
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| declare_names (Const (c, _)) = Name.declare (Long_Name.base_name c) |
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| declare_names (Free (x, _)) = Name.declare x |
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| declare_names _ = I; |
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fun variant_abs bs (Abs (x, T, t)) = |
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let |
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val names = fold Name.declare bs (declare_names t Name.context); |
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val x' = #1 (Name.variant x names); |
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val t' = variant_abs (x' :: bs) t; |
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parents:
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in Abs (x', T, t') end |
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parents:
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| variant_abs bs (t $ u) = variant_abs bs t $ variant_abs bs u |
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parents:
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| variant_abs _ t = t; |
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in |
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fun standard_vars used = |
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let |
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fun zero_var_indexes tm = |
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Term_Subst.instantiate (Term_Subst.zero_var_indexes_inst used [tm]) tm; |
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fun unvarifyT ty = ty |> Term.map_atyps |
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(fn TVar ((a, _), S) => TFree (a, S) |
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| T as TFree (a, _) => |
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if Name.is_declared used a then T |
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else raise TYPE (Logic.bad_fixed a, [ty], [])); |
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fun unvarify tm = tm |> Term.map_aterms |
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(fn Var ((x, _), T) => Free (x, T) |
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| t as Free (x, _) => |
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if Name.is_declared used x then t |
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else raise TERM (Logic.bad_fixed x, [tm]) |
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| t => t); |
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in zero_var_indexes #> map_types unvarifyT #> unvarify #> variant_abs [] end; |
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val standard_vars_global = standard_vars Name.context; |
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end; |
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(* free variables: not declared in the context *) |
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val is_free = not oo Name.is_declared; |
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fun add_frees used = |
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fold_aterms (fn Free (x, T) => is_free used x ? insert (op =) (x, T) | _ => I); |
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fun add_tfrees used = |
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(fold_types o fold_atyps) (fn TFree (a, S) => is_free used a ? insert (op =) (a, S) | _ => I); |
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(* locales content *) |
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fun locale_content thy loc = |
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let |
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val ctxt = Locale.init loc thy; |
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val args = |
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Locale.params_of thy loc |
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|> map (fn ((x, T), _) => ((x, T), get_syntax_param ctxt loc x)); |
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val axioms = |
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let |
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val (asm, defs) = Locale.specification_of thy loc; |
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val cprops = map (Thm.cterm_of ctxt) (the_list asm @ defs); |
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val (intro1, intro2) = Locale.intros_of thy loc; |
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val intros_tac = Method.try_intros_tac ctxt (the_list intro1 @ the_list intro2) []; |
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val res = |
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Goal.init (Conjunction.mk_conjunction_balanced cprops) |
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|> (ALLGOALS Goal.conjunction_tac THEN intros_tac) |
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|> try Seq.hd; |
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in |
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(case res of |
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SOME goal => Thm.prems_of goal |
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| NONE => raise Fail ("Cannot unfold locale " ^ quote loc)) |
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end; |
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val typargs = rev (fold Term.add_tfrees (map (Free o #1) args @ axioms) []); |
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in {typargs = typargs, args = args, axioms = axioms} end; |
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fun get_locales thy = |
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Locale.get_locales thy |> map_filter (fn loc => |
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if Experiment.is_experiment thy loc then NONE else SOME (loc, ())); |
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fun get_dependencies prev_thys thy = |
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Locale.dest_dependencies prev_thys thy |> map_filter (fn dep => |
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if Experiment.is_experiment thy (#source dep) orelse |
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Experiment.is_experiment thy (#target dep) then NONE |
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else |
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let |
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val (type_params, params) = Locale.parameters_of thy (#source dep); |
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val typargs = fold (Term.add_tfreesT o #2 o #1) params type_params; |
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val substT = |
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typargs |> map_filter (fn v => |
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let |
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145 |
val T = TFree v; |
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146 |
val T' = Morphism.typ (#morphism dep) T; |
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147 |
in if T = T' then NONE else SOME (v, T') end); |
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|
148 |
val subst = |
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149 |
params |> map_filter (fn (v, _) => |
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150 |
let |
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|
151 |
val t = Free v; |
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152 |
val t' = Morphism.term (#morphism dep) t; |
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153 |
in if t aconv t' then NONE else SOME (v, t') end); |
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|
154 |
in SOME (dep, (substT, subst)) end); |
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|
155 |
|
69019 | 156 |
|
68201 | 157 |
(* general setup *) |
68154 | 158 |
|
68201 | 159 |
fun setup_presentation f = |
160 |
Theory.setup (Thy_Info.add_presentation (fn context => fn thy => |
|
161 |
if Options.bool (#options context) "export_theory" then f context thy else ())); |
|
68154 | 162 |
|
68201 | 163 |
fun export_body thy name body = |
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|
164 |
Export.export thy (Path.make ["theory", name]) |
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|
165 |
(Buffer.chunks (YXML.buffer_body body Buffer.empty)); |
68165 | 166 |
|
68154 | 167 |
|
68201 | 168 |
(* presentation *) |
169 |
||
170 |
val _ = setup_presentation (fn {adjust_pos, ...} => fn thy => |
|
171 |
let |
|
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|
172 |
val parents = Theory.parents_of thy; |
68264 | 173 |
val rep_tsig = Type.rep_tsig (Sign.tsig_of thy); |
174 |
||
69003 | 175 |
val thy_ctxt = Proof_Context.init_global thy; |
68997 | 176 |
|
68264 | 177 |
|
68201 | 178 |
(* entities *) |
68154 | 179 |
|
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|
180 |
fun make_entity_markup name xname pos serial = |
68201 | 181 |
let |
182 |
val props = |
|
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|
183 |
Position.offset_properties_of (adjust_pos pos) @ |
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|
184 |
Position.id_properties_of pos @ |
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|
185 |
Markup.serial_properties serial; |
68997 | 186 |
in (Markup.entityN, (Markup.nameN, name) :: (Markup.xnameN, xname) :: props) end; |
68154 | 187 |
|
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|
188 |
fun entity_markup space name = |
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changeset
|
189 |
let |
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changeset
|
190 |
val xname = Name_Space.extern_shortest thy_ctxt space name; |
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changeset
|
191 |
val {serial, pos, ...} = Name_Space.the_entry space name; |
b9aca3b9619f
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changeset
|
192 |
in make_entity_markup name xname pos serial end; |
b9aca3b9619f
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wenzelm
parents:
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diff
changeset
|
193 |
|
68201 | 194 |
fun export_entities export_name export get_space decls = |
195 |
let val elems = |
|
196 |
let |
|
68206 | 197 |
val parent_spaces = map get_space parents; |
68201 | 198 |
val space = get_space thy; |
199 |
in |
|
200 |
(decls, []) |-> fold (fn (name, decl) => |
|
201 |
if exists (fn space => Name_Space.declared space name) parent_spaces then I |
|
202 |
else |
|
203 |
(case export name decl of |
|
204 |
NONE => I |
|
68724 | 205 |
| SOME body => |
206 |
cons (#serial (Name_Space.the_entry space name), |
|
207 |
XML.Elem (entity_markup space name, body)))) |
|
208 |
|> sort (int_ord o apply2 #1) |> map #2 |
|
68201 | 209 |
end; |
210 |
in if null elems then () else export_body thy export_name elems end; |
|
68165 | 211 |
|
212 |
||
68201 | 213 |
(* types *) |
68165 | 214 |
|
68201 | 215 |
val encode_type = |
216 |
let open XML.Encode Term_XML.Encode |
|
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|
217 |
in triple encode_syntax (list string) (option typ) end; |
68165 | 218 |
|
69003 | 219 |
fun export_type c (Type.LogicalType n) = |
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|
220 |
SOME (encode_type (get_syntax_type thy_ctxt c, Name.invent Name.context Name.aT n, NONE)) |
69003 | 221 |
| export_type c (Type.Abbreviation (args, U, false)) = |
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|
222 |
SOME (encode_type (get_syntax_type thy_ctxt c, args, SOME U)) |
69003 | 223 |
| export_type _ _ = NONE; |
68165 | 224 |
|
68201 | 225 |
val _ = |
69003 | 226 |
export_entities "types" export_type Sign.type_space |
68264 | 227 |
(Name_Space.dest_table (#types rep_tsig)); |
68201 | 228 |
|
68173 | 229 |
|
68201 | 230 |
(* consts *) |
231 |
||
232 |
val encode_const = |
|
69023
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changeset
|
233 |
let open XML.Encode Term_XML.Encode |
69988 | 234 |
in pair encode_syntax (pair (list string) (pair typ (pair (option term) bool))) end; |
68165 | 235 |
|
68201 | 236 |
fun export_const c (T, abbrev) = |
237 |
let |
|
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|
238 |
val syntax = get_syntax_const thy_ctxt c; |
68201 | 239 |
val T' = T |> Logic.unvarifyT_global |> Type.strip_sorts; |
69023
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parents:
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changeset
|
240 |
val abbrev' = abbrev |> Option.map (standard_vars_global #> map_types Type.strip_sorts); |
68201 | 241 |
val args = map (#1 o dest_TFree) (Consts.typargs (Sign.consts_of thy) (c, T')); |
69988 | 242 |
val propositional = Object_Logic.is_propositional thy_ctxt (Term.body_type T'); |
243 |
in encode_const (syntax, (args, (T', (abbrev', propositional)))) end; |
|
68165 | 244 |
|
68201 | 245 |
val _ = |
69023
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wenzelm
parents:
69019
diff
changeset
|
246 |
export_entities "consts" (SOME oo export_const) Sign.const_space |
68201 | 247 |
(#constants (Consts.dest (Sign.consts_of thy))); |
248 |
||
68208 | 249 |
|
68232 | 250 |
(* axioms and facts *) |
68208 | 251 |
|
69023
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parents:
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diff
changeset
|
252 |
fun prop_of raw_thm = |
68727 | 253 |
let |
254 |
val thm = raw_thm |
|
255 |
|> Thm.transfer thy |
|
256 |
|> Thm.check_hyps (Context.Theory thy) |
|
257 |
|> Thm.strip_shyps; |
|
258 |
val prop = thm |
|
69023
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wenzelm
parents:
69019
diff
changeset
|
259 |
|> Thm.full_prop_of; |
68727 | 260 |
in (Thm.extra_shyps thm, prop) end; |
68539 | 261 |
|
69023
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wenzelm
parents:
69019
diff
changeset
|
262 |
fun encode_prop used (Ss, raw_prop) = |
68208 | 263 |
let |
69023
cef000855cf4
clarified standardization of variables, with proper treatment of local variables;
wenzelm
parents:
69019
diff
changeset
|
264 |
val prop = standard_vars used raw_prop; |
cef000855cf4
clarified standardization of variables, with proper treatment of local variables;
wenzelm
parents:
69019
diff
changeset
|
265 |
val args = rev (add_frees used prop []); |
cef000855cf4
clarified standardization of variables, with proper treatment of local variables;
wenzelm
parents:
69019
diff
changeset
|
266 |
val typargs = rev (add_tfrees used prop []); |
cef000855cf4
clarified standardization of variables, with proper treatment of local variables;
wenzelm
parents:
69019
diff
changeset
|
267 |
val used' = fold (Name.declare o #1) typargs used; |
cef000855cf4
clarified standardization of variables, with proper treatment of local variables;
wenzelm
parents:
69019
diff
changeset
|
268 |
val sorts = Name.invent used' Name.aT (length Ss) ~~ Ss; |
68726 | 269 |
in |
69023
cef000855cf4
clarified standardization of variables, with proper treatment of local variables;
wenzelm
parents:
69019
diff
changeset
|
270 |
(sorts @ typargs, args, prop) |> |
68727 | 271 |
let open XML.Encode Term_XML.Encode |
272 |
in triple (list (pair string sort)) (list (pair string typ)) term end |
|
68726 | 273 |
end; |
68208 | 274 |
|
69023
cef000855cf4
clarified standardization of variables, with proper treatment of local variables;
wenzelm
parents:
69019
diff
changeset
|
275 |
fun encode_axiom used t = encode_prop used ([], t); |
cef000855cf4
clarified standardization of variables, with proper treatment of local variables;
wenzelm
parents:
69019
diff
changeset
|
276 |
|
cef000855cf4
clarified standardization of variables, with proper treatment of local variables;
wenzelm
parents:
69019
diff
changeset
|
277 |
val encode_fact_single = encode_prop Name.context o prop_of; |
cef000855cf4
clarified standardization of variables, with proper treatment of local variables;
wenzelm
parents:
69019
diff
changeset
|
278 |
val encode_fact_multi = XML.Encode.list (encode_prop Name.context) o map prop_of; |
68208 | 279 |
|
68232 | 280 |
val _ = |
69023
cef000855cf4
clarified standardization of variables, with proper treatment of local variables;
wenzelm
parents:
69019
diff
changeset
|
281 |
export_entities "axioms" (fn _ => fn t => SOME (encode_axiom Name.context t)) |
cef000855cf4
clarified standardization of variables, with proper treatment of local variables;
wenzelm
parents:
69019
diff
changeset
|
282 |
Theory.axiom_space (Theory.axioms_of thy); |
68235
a3bd410db5b2
standardize implicit variables: non-zero indexes do occur occasionally, e.g. via RS;
wenzelm
parents:
68232
diff
changeset
|
283 |
val _ = |
69023
cef000855cf4
clarified standardization of variables, with proper treatment of local variables;
wenzelm
parents:
69019
diff
changeset
|
284 |
export_entities "facts" (K (SOME o encode_fact_multi)) |
cef000855cf4
clarified standardization of variables, with proper treatment of local variables;
wenzelm
parents:
69019
diff
changeset
|
285 |
(Facts.space_of o Global_Theory.facts_of) |
68232 | 286 |
(Facts.dest_static true [] (Global_Theory.facts_of thy)); |
287 |
||
68264 | 288 |
|
289 |
(* type classes *) |
|
290 |
||
291 |
val encode_class = |
|
292 |
let open XML.Encode Term_XML.Encode |
|
69023
cef000855cf4
clarified standardization of variables, with proper treatment of local variables;
wenzelm
parents:
69019
diff
changeset
|
293 |
in pair (list (pair string typ)) (list encode_fact_single) end; |
68264 | 294 |
|
295 |
fun export_class name = |
|
296 |
(case try (Axclass.get_info thy) name of |
|
297 |
NONE => ([], []) |
|
69023
cef000855cf4
clarified standardization of variables, with proper treatment of local variables;
wenzelm
parents:
69019
diff
changeset
|
298 |
| SOME {params, axioms, ...} => (params, axioms)) |
68264 | 299 |
|> encode_class |> SOME; |
300 |
||
301 |
val _ = |
|
302 |
export_entities "classes" (fn name => fn () => export_class name) |
|
303 |
Sign.class_space (map (rpair ()) (Graph.keys (Sorts.classes_of (#2 (#classes rep_tsig))))); |
|
304 |
||
68295 | 305 |
|
306 |
(* sort algebra *) |
|
307 |
||
308 |
val {classrel, arities} = |
|
309 |
Sorts.dest_algebra (map (#2 o #classes o Type.rep_tsig o Sign.tsig_of) parents) |
|
310 |
(#2 (#classes rep_tsig)); |
|
311 |
||
312 |
val encode_classrel = |
|
313 |
let open XML.Encode |
|
314 |
in list (pair string (list string)) end; |
|
315 |
||
316 |
val encode_arities = |
|
317 |
let open XML.Encode Term_XML.Encode |
|
318 |
in list (triple string (list sort) string) end; |
|
319 |
||
320 |
val _ = if null classrel then () else export_body thy "classrel" (encode_classrel classrel); |
|
321 |
val _ = if null arities then () else export_body thy "arities" (encode_arities arities); |
|
322 |
||
68862 | 323 |
|
324 |
(* locales *) |
|
325 |
||
69023
cef000855cf4
clarified standardization of variables, with proper treatment of local variables;
wenzelm
parents:
69019
diff
changeset
|
326 |
fun encode_locale used = |
69076 | 327 |
let open XML.Encode Term_XML.Encode in |
69077
11529ae45786
more approximative prefix syntax, including binder;
wenzelm
parents:
69076
diff
changeset
|
328 |
triple (list (pair string sort)) (list (pair (pair string typ) encode_syntax)) |
69076 | 329 |
(list (encode_axiom used)) |
330 |
end; |
|
69023
cef000855cf4
clarified standardization of variables, with proper treatment of local variables;
wenzelm
parents:
69019
diff
changeset
|
331 |
|
69029
aec64b88e708
clarified locale content: proper args with types for interpretation/axioms and typargs derived from the result;
wenzelm
parents:
69028
diff
changeset
|
332 |
fun export_locale loc = |
68864 | 333 |
let |
69034 | 334 |
val {typargs, args, axioms} = locale_content thy loc; |
69076 | 335 |
val used = fold Name.declare (map #1 typargs @ map (#1 o #1) args) Name.context; |
69027 | 336 |
in encode_locale used (typargs, args, axioms) end |
337 |
handle ERROR msg => |
|
338 |
cat_error msg ("The error(s) above occurred in locale " ^ |
|
339 |
quote (Locale.markup_name thy_ctxt loc)); |
|
68862 | 340 |
|
341 |
val _ = |
|
69029
aec64b88e708
clarified locale content: proper args with types for interpretation/axioms and typargs derived from the result;
wenzelm
parents:
69028
diff
changeset
|
342 |
export_entities "locales" (fn loc => fn () => SOME (export_locale loc)) |
69087
06017b2c4552
suppress aux. locales from command 'experiment' -- avoid crash of theory Dict_Construction.Test_Dict_Construction (AFP);
wenzelm
parents:
69086
diff
changeset
|
343 |
Locale.locale_space (get_locales thy); |
68862 | 344 |
|
68900
1145b25c53de
more robust: parents are strict in Export_Theory.read_theory and thus approximate "commit" of exports;
wenzelm
parents:
68864
diff
changeset
|
345 |
|
69069
b9aca3b9619f
export locale dependencies, with approx. morphism as type/term substitution;
wenzelm
parents:
69034
diff
changeset
|
346 |
(* locale dependencies *) |
b9aca3b9619f
export locale dependencies, with approx. morphism as type/term substitution;
wenzelm
parents:
69034
diff
changeset
|
347 |
|
69087
06017b2c4552
suppress aux. locales from command 'experiment' -- avoid crash of theory Dict_Construction.Test_Dict_Construction (AFP);
wenzelm
parents:
69086
diff
changeset
|
348 |
fun encode_locale_dependency (dep: Locale.locale_dependency, subst) = |
06017b2c4552
suppress aux. locales from command 'experiment' -- avoid crash of theory Dict_Construction.Test_Dict_Construction (AFP);
wenzelm
parents:
69086
diff
changeset
|
349 |
(#source dep, (#target dep, (#prefix dep, subst))) |> |
69069
b9aca3b9619f
export locale dependencies, with approx. morphism as type/term substitution;
wenzelm
parents:
69034
diff
changeset
|
350 |
let |
b9aca3b9619f
export locale dependencies, with approx. morphism as type/term substitution;
wenzelm
parents:
69034
diff
changeset
|
351 |
open XML.Encode Term_XML.Encode; |
b9aca3b9619f
export locale dependencies, with approx. morphism as type/term substitution;
wenzelm
parents:
69034
diff
changeset
|
352 |
val encode_subst = |
b9aca3b9619f
export locale dependencies, with approx. morphism as type/term substitution;
wenzelm
parents:
69034
diff
changeset
|
353 |
pair (list (pair (pair string sort) typ)) (list (pair (pair string typ) term)); |
b9aca3b9619f
export locale dependencies, with approx. morphism as type/term substitution;
wenzelm
parents:
69034
diff
changeset
|
354 |
in pair string (pair string (pair (list (pair string bool)) encode_subst)) end; |
b9aca3b9619f
export locale dependencies, with approx. morphism as type/term substitution;
wenzelm
parents:
69034
diff
changeset
|
355 |
|
b9aca3b9619f
export locale dependencies, with approx. morphism as type/term substitution;
wenzelm
parents:
69034
diff
changeset
|
356 |
val _ = |
69087
06017b2c4552
suppress aux. locales from command 'experiment' -- avoid crash of theory Dict_Construction.Test_Dict_Construction (AFP);
wenzelm
parents:
69086
diff
changeset
|
357 |
(case get_dependencies parents thy of |
69069
b9aca3b9619f
export locale dependencies, with approx. morphism as type/term substitution;
wenzelm
parents:
69034
diff
changeset
|
358 |
[] => () |
b9aca3b9619f
export locale dependencies, with approx. morphism as type/term substitution;
wenzelm
parents:
69034
diff
changeset
|
359 |
| deps => |
b9aca3b9619f
export locale dependencies, with approx. morphism as type/term substitution;
wenzelm
parents:
69034
diff
changeset
|
360 |
deps |> map_index (fn (i, dep) => |
b9aca3b9619f
export locale dependencies, with approx. morphism as type/term substitution;
wenzelm
parents:
69034
diff
changeset
|
361 |
let |
b9aca3b9619f
export locale dependencies, with approx. morphism as type/term substitution;
wenzelm
parents:
69034
diff
changeset
|
362 |
val xname = string_of_int (i + 1); |
b9aca3b9619f
export locale dependencies, with approx. morphism as type/term substitution;
wenzelm
parents:
69034
diff
changeset
|
363 |
val name = Long_Name.implode [Context.theory_name thy, xname]; |
69087
06017b2c4552
suppress aux. locales from command 'experiment' -- avoid crash of theory Dict_Construction.Test_Dict_Construction (AFP);
wenzelm
parents:
69086
diff
changeset
|
364 |
val markup = make_entity_markup name xname (#pos (#1 dep)) (#serial (#1 dep)); |
69069
b9aca3b9619f
export locale dependencies, with approx. morphism as type/term substitution;
wenzelm
parents:
69034
diff
changeset
|
365 |
val body = encode_locale_dependency dep; |
69087
06017b2c4552
suppress aux. locales from command 'experiment' -- avoid crash of theory Dict_Construction.Test_Dict_Construction (AFP);
wenzelm
parents:
69086
diff
changeset
|
366 |
in XML.Elem (markup, body) end) |
69069
b9aca3b9619f
export locale dependencies, with approx. morphism as type/term substitution;
wenzelm
parents:
69034
diff
changeset
|
367 |
|> export_body thy "locale_dependencies"); |
b9aca3b9619f
export locale dependencies, with approx. morphism as type/term substitution;
wenzelm
parents:
69034
diff
changeset
|
368 |
|
b9aca3b9619f
export locale dependencies, with approx. morphism as type/term substitution;
wenzelm
parents:
69034
diff
changeset
|
369 |
|
68900
1145b25c53de
more robust: parents are strict in Export_Theory.read_theory and thus approximate "commit" of exports;
wenzelm
parents:
68864
diff
changeset
|
370 |
(* parents *) |
1145b25c53de
more robust: parents are strict in Export_Theory.read_theory and thus approximate "commit" of exports;
wenzelm
parents:
68864
diff
changeset
|
371 |
|
1145b25c53de
more robust: parents are strict in Export_Theory.read_theory and thus approximate "commit" of exports;
wenzelm
parents:
68864
diff
changeset
|
372 |
val _ = |
1145b25c53de
more robust: parents are strict in Export_Theory.read_theory and thus approximate "commit" of exports;
wenzelm
parents:
68864
diff
changeset
|
373 |
export_body thy "parents" |
1145b25c53de
more robust: parents are strict in Export_Theory.read_theory and thus approximate "commit" of exports;
wenzelm
parents:
68864
diff
changeset
|
374 |
(XML.Encode.string (cat_lines (map Context.theory_long_name parents))); |
1145b25c53de
more robust: parents are strict in Export_Theory.read_theory and thus approximate "commit" of exports;
wenzelm
parents:
68864
diff
changeset
|
375 |
|
68295 | 376 |
in () end); |
68165 | 377 |
|
378 |
end; |