1 (* Title: Pure/Isar/proof_context.ML
2 Author: Markus Wenzel, TU Muenchen
4 The key concept of Isar proof contexts: elevates primitive local
5 reasoning Gamma |- phi to a structured concept, with generic context
6 elements. See also structure Variable and Assumption.
9 signature PROOF_CONTEXT =
11 val theory_of: Proof.context -> theory
12 val init: theory -> Proof.context
14 val mode_default: mode
16 val mode_pattern: mode
17 val mode_schematic: mode
19 val set_mode: mode -> Proof.context -> Proof.context
20 val get_mode: Proof.context -> mode
21 val restore_mode: Proof.context -> Proof.context -> Proof.context
22 val abbrev_mode: Proof.context -> bool
23 val set_stmt: bool -> Proof.context -> Proof.context
24 val local_naming: Name_Space.naming
25 val map_naming: (Name_Space.naming -> Name_Space.naming) -> Proof.context -> Proof.context
26 val naming_of: Proof.context -> Name_Space.naming
27 val restore_naming: Proof.context -> Proof.context -> Proof.context
28 val full_name: Proof.context -> binding -> string
29 val syn_of: Proof.context -> Syntax.syntax
30 val consts_of: Proof.context -> Consts.T
31 val the_const_constraint: Proof.context -> string -> typ
32 val set_syntax_mode: Syntax.mode -> Proof.context -> Proof.context
33 val restore_syntax_mode: Proof.context -> Proof.context -> Proof.context
34 val facts_of: Proof.context -> Facts.T
35 val cases_of: Proof.context -> (string * (Rule_Cases.T * bool)) list
36 val transfer_syntax: theory -> Proof.context -> Proof.context
37 val transfer: theory -> Proof.context -> Proof.context
38 val theory: (theory -> theory) -> Proof.context -> Proof.context
39 val theory_result: (theory -> 'a * theory) -> Proof.context -> 'a * Proof.context
40 val extern_fact: Proof.context -> string -> xstring
41 val pretty_term_abbrev: Proof.context -> term -> Pretty.T
42 val pretty_fact_aux: Proof.context -> bool -> string * thm list -> Pretty.T
43 val pretty_fact: Proof.context -> string * thm list -> Pretty.T
44 val read_typ: Proof.context -> string -> typ
45 val read_typ_syntax: Proof.context -> string -> typ
46 val read_typ_abbrev: Proof.context -> string -> typ
47 val cert_typ: Proof.context -> typ -> typ
48 val cert_typ_syntax: Proof.context -> typ -> typ
49 val cert_typ_abbrev: Proof.context -> typ -> typ
50 val get_skolem: Proof.context -> string -> string
51 val revert_skolem: Proof.context -> string -> string
52 val infer_type: Proof.context -> string -> typ
53 val inferred_param: string -> Proof.context -> typ * Proof.context
54 val inferred_fixes: Proof.context -> (string * typ) list * Proof.context
55 val read_tyname: Proof.context -> string -> typ
56 val read_const_proper: Proof.context -> string -> term
57 val read_const: Proof.context -> string -> term
58 val allow_dummies: Proof.context -> Proof.context
59 val decode_term: Proof.context -> term -> term
60 val standard_infer_types: Proof.context -> term list -> term list
61 val read_term_pattern: Proof.context -> string -> term
62 val read_term_schematic: Proof.context -> string -> term
63 val read_term_abbrev: Proof.context -> string -> term
64 val expand_abbrevs: Proof.context -> term -> term
65 val cert_term: Proof.context -> term -> term
66 val cert_prop: Proof.context -> term -> term
67 val goal_export: Proof.context -> Proof.context -> thm list -> thm list
68 val export: Proof.context -> Proof.context -> thm list -> thm list
69 val export_morphism: Proof.context -> Proof.context -> morphism
70 val norm_export_morphism: Proof.context -> Proof.context -> morphism
71 val bind_terms: (indexname * term option) list -> Proof.context -> Proof.context
72 val auto_bind_goal: term list -> Proof.context -> Proof.context
73 val auto_bind_facts: term list -> Proof.context -> Proof.context
74 val match_bind: bool -> (string list * string) list -> Proof.context -> term list * Proof.context
75 val match_bind_i: bool -> (term list * term) list -> Proof.context -> term list * Proof.context
76 val read_propp: Proof.context * (string * string list) list list
77 -> Proof.context * (term * term list) list list
78 val cert_propp: Proof.context * (term * term list) list list
79 -> Proof.context * (term * term list) list list
80 val read_propp_schematic: Proof.context * (string * string list) list list
81 -> Proof.context * (term * term list) list list
82 val cert_propp_schematic: Proof.context * (term * term list) list list
83 -> Proof.context * (term * term list) list list
84 val bind_propp: Proof.context * (string * string list) list list
85 -> Proof.context * (term list list * (Proof.context -> Proof.context))
86 val bind_propp_i: Proof.context * (term * term list) list list
87 -> Proof.context * (term list list * (Proof.context -> Proof.context))
88 val bind_propp_schematic: Proof.context * (string * string list) list list
89 -> Proof.context * (term list list * (Proof.context -> Proof.context))
90 val bind_propp_schematic_i: Proof.context * (term * term list) list list
91 -> Proof.context * (term list list * (Proof.context -> Proof.context))
92 val fact_tac: thm list -> int -> tactic
93 val some_fact_tac: Proof.context -> int -> tactic
94 val get_fact: Proof.context -> Facts.ref -> thm list
95 val get_fact_single: Proof.context -> Facts.ref -> thm
96 val get_thms: Proof.context -> xstring -> thm list
97 val get_thm: Proof.context -> xstring -> thm
98 val note_thmss: string -> (Thm.binding * (thm list * attribute list) list) list ->
99 Proof.context -> (string * thm list) list * Proof.context
100 val put_thms: bool -> string * thm list option -> Proof.context -> Proof.context
101 val read_vars: (binding * string option * mixfix) list -> Proof.context ->
102 (binding * typ option * mixfix) list * Proof.context
103 val cert_vars: (binding * typ option * mixfix) list -> Proof.context ->
104 (binding * typ option * mixfix) list * Proof.context
105 val add_fixes: (binding * typ option * mixfix) list -> Proof.context ->
106 string list * Proof.context
107 val auto_fixes: Proof.context * (term list list * 'a) -> Proof.context * (term list list * 'a)
108 val bind_fixes: string list -> Proof.context -> (term -> term) * Proof.context
109 val add_assms: Assumption.export ->
110 (Thm.binding * (string * string list) list) list ->
111 Proof.context -> (string * thm list) list * Proof.context
112 val add_assms_i: Assumption.export ->
113 (Thm.binding * (term * term list) list) list ->
114 Proof.context -> (string * thm list) list * Proof.context
115 val add_cases: bool -> (string * Rule_Cases.T option) list -> Proof.context -> Proof.context
116 val apply_case: Rule_Cases.T -> Proof.context -> (string * term list) list * Proof.context
117 val get_case: Proof.context -> string -> string option list -> Rule_Cases.T
118 val notation: bool -> Syntax.mode -> (term * mixfix) list -> Proof.context -> Proof.context
119 val target_notation: bool -> Syntax.mode -> (term * mixfix) list -> morphism ->
120 Context.generic -> Context.generic
121 val add_const_constraint: string * typ option -> Proof.context -> Proof.context
122 val add_abbrev: string -> binding * term -> Proof.context -> (term * term) * Proof.context
123 val revert_abbrev: string -> string -> Proof.context -> Proof.context
124 val print_syntax: Proof.context -> unit
125 val print_abbrevs: Proof.context -> unit
126 val print_binds: Proof.context -> unit
127 val print_lthms: Proof.context -> unit
128 val print_cases: Proof.context -> unit
129 val debug: bool Unsynchronized.ref
130 val verbose: bool Unsynchronized.ref
131 val prems_limit: int Unsynchronized.ref
132 val pretty_ctxt: Proof.context -> Pretty.T list
133 val pretty_context: Proof.context -> Pretty.T list
136 structure ProofContext: PROOF_CONTEXT =
142 (** inner syntax mode **)
146 {stmt: bool, (*inner statement mode*)
147 pattern: bool, (*pattern binding schematic variables*)
148 schematic: bool, (*term referencing loose schematic variables*)
149 abbrev: bool}; (*abbrev mode -- no normalization*)
151 fun make_mode (stmt, pattern, schematic, abbrev) =
152 Mode {stmt = stmt, pattern = pattern, schematic = schematic, abbrev = abbrev};
154 val mode_default = make_mode (false, false, false, false);
155 val mode_stmt = make_mode (true, false, false, false);
156 val mode_pattern = make_mode (false, true, false, false);
157 val mode_schematic = make_mode (false, false, true, false);
158 val mode_abbrev = make_mode (false, false, false, true);
162 (** Isar proof context information **)
166 {mode: mode, (*inner syntax mode*)
167 naming: Name_Space.naming, (*local naming conventions*)
168 syntax: Local_Syntax.T, (*local syntax*)
169 consts: Consts.T * Consts.T, (*local/global consts*)
170 facts: Facts.T, (*local facts*)
171 cases: (string * (Rule_Cases.T * bool)) list}; (*named case contexts*)
173 fun make_ctxt (mode, naming, syntax, consts, facts, cases) =
174 Ctxt {mode = mode, naming = naming, syntax = syntax,
175 consts = consts, facts = facts, cases = cases};
177 val local_naming = Name_Space.default_naming |> Name_Space.add_path "local";
179 structure ContextData = Proof_Data
183 make_ctxt (mode_default, local_naming, Local_Syntax.init thy,
184 (Sign.consts_of thy, Sign.consts_of thy), Facts.empty, []);
187 fun rep_context ctxt = ContextData.get ctxt |> (fn Ctxt args => args);
190 ContextData.map (fn Ctxt {mode, naming, syntax, consts, facts, cases} =>
191 make_ctxt (f (mode, naming, syntax, consts, facts, cases)));
193 fun set_mode mode = map_context (fn (_, naming, syntax, consts, facts, cases) =>
194 (mode, naming, syntax, consts, facts, cases));
197 map_context (fn (Mode {stmt, pattern, schematic, abbrev}, naming, syntax, consts, facts, cases) =>
198 (make_mode (f (stmt, pattern, schematic, abbrev)), naming, syntax, consts, facts, cases));
201 map_context (fn (mode, naming, syntax, consts, facts, cases) =>
202 (mode, f naming, syntax, consts, facts, cases));
205 map_context (fn (mode, naming, syntax, consts, facts, cases) =>
206 (mode, naming, f syntax, consts, facts, cases));
209 map_context (fn (mode, naming, syntax, consts, facts, cases) =>
210 (mode, naming, syntax, f consts, facts, cases));
213 map_context (fn (mode, naming, syntax, consts, facts, cases) =>
214 (mode, naming, syntax, consts, f facts, cases));
217 map_context (fn (mode, naming, syntax, consts, facts, cases) =>
218 (mode, naming, syntax, consts, facts, f cases));
220 val get_mode = #mode o rep_context;
221 val restore_mode = set_mode o get_mode;
222 val abbrev_mode = get_mode #> (fn Mode {abbrev, ...} => abbrev);
225 map_mode (fn (_, pattern, schematic, abbrev) => (stmt, pattern, schematic, abbrev));
227 val naming_of = #naming o rep_context;
228 val restore_naming = map_naming o K o naming_of
229 val full_name = Name_Space.full_name o naming_of;
231 val syntax_of = #syntax o rep_context;
232 val syn_of = Local_Syntax.syn_of o syntax_of;
233 val set_syntax_mode = map_syntax o Local_Syntax.set_mode;
234 val restore_syntax_mode = map_syntax o Local_Syntax.restore_mode o syntax_of;
236 val consts_of = #1 o #consts o rep_context;
237 val the_const_constraint = Consts.the_constraint o consts_of;
239 val facts_of = #facts o rep_context;
240 val cases_of = #cases o rep_context;
243 (* theory transfer *)
245 fun transfer_syntax thy =
246 map_syntax (Local_Syntax.rebuild thy) #>
247 map_consts (fn consts as (local_consts, global_consts) =>
248 let val thy_consts = Sign.consts_of thy in
249 if Consts.eq_consts (thy_consts, global_consts) then consts
250 else (Consts.merge (local_consts, thy_consts), thy_consts)
253 fun transfer thy = Context.raw_transfer thy #> transfer_syntax thy;
255 fun theory f ctxt = transfer (f (theory_of ctxt)) ctxt;
257 fun theory_result f ctxt =
258 let val (res, thy') = f (theory_of ctxt)
259 in (res, ctxt |> transfer thy') end;
263 (** pretty printing **)
267 fun extern_fact ctxt name =
269 val local_facts = facts_of ctxt;
270 val global_facts = PureThy.facts_of (theory_of ctxt);
272 if is_some (Facts.lookup (Context.Proof ctxt) local_facts name)
273 then Facts.extern local_facts name
274 else Facts.extern global_facts name
280 fun pretty_term_abbrev ctxt = Syntax.pretty_term (set_mode mode_abbrev ctxt);
282 fun pretty_fact_name ctxt a = Pretty.block
283 [Pretty.markup (Markup.fact a) [Pretty.str (extern_fact ctxt a)], Pretty.str ":"];
285 fun pretty_fact_aux ctxt flag ("", ths) =
286 Display.pretty_thms_aux ctxt flag ths
287 | pretty_fact_aux ctxt flag (a, [th]) = Pretty.block
288 [pretty_fact_name ctxt a, Pretty.brk 1, Display.pretty_thm_aux ctxt flag th]
289 | pretty_fact_aux ctxt flag (a, ths) = Pretty.block
290 (Pretty.fbreaks (pretty_fact_name ctxt a :: map (Display.pretty_thm_aux ctxt flag) ths));
292 fun pretty_fact ctxt = pretty_fact_aux ctxt true;
296 (** prepare types **)
300 fun read_typ_mode mode ctxt s =
301 Syntax.read_typ (Type.set_mode mode ctxt) s;
303 val read_typ = read_typ_mode Type.mode_default;
304 val read_typ_syntax = read_typ_mode Type.mode_syntax;
305 val read_typ_abbrev = read_typ_mode Type.mode_abbrev;
310 fun cert_typ_mode mode ctxt T =
311 Sign.certify_typ_mode mode (theory_of ctxt) T
312 handle TYPE (msg, _, _) => error msg;
314 val cert_typ = cert_typ_mode Type.mode_default;
315 val cert_typ_syntax = cert_typ_mode Type.mode_syntax;
316 val cert_typ_abbrev = cert_typ_mode Type.mode_abbrev;
320 (** prepare variables **)
322 (* internalize Skolem constants *)
324 val lookup_skolem = AList.lookup (op =) o Variable.fixes_of;
325 fun get_skolem ctxt x = the_default x (lookup_skolem ctxt x);
327 fun no_skolem internal x =
328 if can Name.dest_skolem x then
329 error ("Illegal reference to internal Skolem constant: " ^ quote x)
330 else if not internal andalso can Name.dest_internal x then
331 error ("Illegal reference to internal variable: " ^ quote x)
335 (* revert Skolem constants -- if possible *)
337 fun revert_skolem ctxt x =
338 (case find_first (fn (_, y) => y = x) (Variable.fixes_of ctxt) of
339 SOME (x', _) => if lookup_skolem ctxt x' = SOME x then x' else x
343 (* default token translations *)
347 fun free_or_skolem ctxt x =
348 (if can Name.dest_skolem x then Pretty.mark Markup.skolem (Pretty.str (revert_skolem ctxt x))
349 else Pretty.mark Markup.free (Pretty.str x))
351 (if Variable.is_fixed ctxt x orelse Syntax.is_pretty_global ctxt then Markup.fixed x
354 fun var_or_skolem _ s =
355 (case Lexicon.read_variable s of
357 (case try Name.dest_skolem x of
358 NONE => Pretty.mark Markup.var (Pretty.str s)
359 | SOME x' => Pretty.mark Markup.skolem
360 (Pretty.str (setmp_CRITICAL show_question_marks true Term.string_of_vname (x', i))))
361 | NONE => Pretty.mark Markup.var (Pretty.str s));
363 fun class_markup _ c = (* FIXME authentic name *)
364 Pretty.mark (Markup.tclassN, []) (Pretty.str c);
366 fun plain_markup m _ s = Pretty.mark m (Pretty.str s);
369 Syntax.tokentrans_mode ""
370 [("class", class_markup),
371 ("tfree", plain_markup Markup.tfree),
372 ("tvar", plain_markup Markup.tvar),
373 ("free", free_or_skolem),
374 ("bound", plain_markup Markup.bound),
375 ("var", var_or_skolem),
376 ("numeral", plain_markup Markup.numeral),
377 ("inner_string", plain_markup Markup.inner_string)];
379 in val _ = Context.>> (Context.map_theory (Sign.add_tokentrfuns token_trans)) end;
383 (** prepare terms and propositions **)
385 (* inferred types of parameters *)
387 fun infer_type ctxt x =
388 Term.fastype_of (singleton (Syntax.check_terms (set_mode mode_schematic ctxt))
391 fun inferred_param x ctxt =
392 let val T = infer_type ctxt x
393 in (T, ctxt |> Variable.declare_term (Free (x, T))) end;
395 fun inferred_fixes ctxt =
397 val xs = rev (map #2 (Variable.fixes_of ctxt));
398 val (Ts, ctxt') = fold_map inferred_param xs ctxt;
399 in (xs ~~ Ts, ctxt') end;
402 (* type and constant names *)
406 val token_content = Syntax.read_token #>> Symbol_Pos.content;
408 fun prep_const_proper ctxt (c, pos) =
409 let val t as (Const (d, _)) =
410 (case Variable.lookup_const ctxt c of
411 SOME d => Const (d, Consts.type_scheme (consts_of ctxt) d handle TYPE (msg, _, _) => error msg)
412 | NONE => Consts.read_const (consts_of ctxt) c)
413 in Position.report (Markup.const d) pos; t end;
417 fun read_tyname ctxt str =
419 val thy = theory_of ctxt;
420 val (c, pos) = token_content str;
422 if Syntax.is_tid c then
423 (Position.report Markup.tfree pos;
424 TFree (c, the_default (Sign.defaultS thy) (Variable.def_sort ctxt (c, ~1))))
427 val d = Sign.intern_type thy c;
428 val _ = Position.report (Markup.tycon d) pos;
429 in Type (d, replicate (Sign.arity_number thy d) dummyT) end
432 fun read_const_proper ctxt = prep_const_proper ctxt o token_content;
434 fun read_const ctxt str =
435 let val (c, pos) = token_content str in
436 (case (lookup_skolem ctxt c, Variable.is_const ctxt c) of
438 (Position.report (Markup.name x
439 (if can Name.dest_skolem x then Markup.skolem else Markup.free)) pos;
440 Free (x, infer_type ctxt x))
441 | _ => prep_const_proper ctxt (c, pos))
449 fun read_term_mode mode ctxt = Syntax.read_term (set_mode mode ctxt);
451 val read_term_pattern = read_term_mode mode_pattern;
452 val read_term_schematic = read_term_mode mode_schematic;
453 val read_term_abbrev = read_term_mode mode_abbrev;
456 (* local abbreviations *)
458 val tsig_of = Sign.tsig_of o ProofContext.theory_of;
462 fun certify_consts ctxt = Consts.certify (Syntax.pp ctxt) (tsig_of ctxt)
463 (not (abbrev_mode ctxt)) (consts_of ctxt);
465 fun reject_schematic (Var (xi, _)) =
466 error ("Unbound schematic variable: " ^ Term.string_of_vname xi)
467 | reject_schematic (Abs (_, _, t)) = reject_schematic t
468 | reject_schematic (t $ u) = (reject_schematic t; reject_schematic u)
469 | reject_schematic _ = ();
471 fun expand_binds ctxt =
472 let val Mode {pattern, schematic, ...} = get_mode ctxt in
474 else Variable.expand_binds ctxt #> (if schematic then I else tap reject_schematic)
479 fun expand_abbrevs ctxt = certify_consts ctxt #> expand_binds ctxt;
484 fun contract_abbrevs ctxt t =
486 val thy = theory_of ctxt;
487 val consts = consts_of ctxt;
488 val Mode {abbrev, ...} = get_mode ctxt;
489 val retrieve = Consts.retrieve_abbrevs consts (print_mode_value () @ [""]);
490 fun match_abbrev u = Option.map #1 (get_first (Pattern.match_rew thy u) (retrieve u));
492 if abbrev orelse print_mode_active "no_abbrevs" orelse not (can Term.type_of t) then t
493 else Pattern.rewrite_term_top thy [] [match_abbrev] t
499 fun prepare_patternT ctxt T =
501 val Mode {pattern, schematic, ...} = get_mode ctxt;
503 pattern orelse schematic orelse
504 T |> Term.exists_subtype
506 not (TypeInfer.is_param xi) andalso
507 error ("Illegal schematic type variable: " ^ Term.string_of_vname xi)
514 structure Allow_Dummies = Proof_Data(type T = bool fun init _ = false);
516 fun check_dummies ctxt t =
517 if Allow_Dummies.get ctxt then t
518 else Term.no_dummy_patterns t handle TERM _ => error "Illegal dummy pattern(s) in term";
520 fun prepare_dummies ts = #1 (fold_map Term.replace_dummy_patterns ts 1);
524 val allow_dummies = Allow_Dummies.put true;
526 fun prepare_patterns ctxt =
527 let val Mode {pattern, ...} = get_mode ctxt in
528 TypeInfer.fixate_params (Variable.names_of ctxt) #>
529 pattern ? Variable.polymorphic ctxt #>
530 (map o Term.map_types) (prepare_patternT ctxt) #>
531 (if pattern then prepare_dummies else map (check_dummies ctxt))
537 (* decoding raw terms (syntax trees) *)
541 fun get_sort thy def_sort raw_env =
543 val tsig = Sign.tsig_of thy;
545 fun eq ((xi, S), (xi', S')) =
546 Term.eq_ix (xi, xi') andalso Type.eq_sort tsig (S, S');
547 val env = distinct eq raw_env;
548 val _ = (case duplicates (eq_fst (op =)) env of [] => ()
549 | dups => error ("Inconsistent sort constraints for type variable(s) "
550 ^ commas_quote (map (Term.string_of_vname' o fst) dups)));
553 (case (AList.lookup (op =) env xi, def_sort xi) of
554 (NONE, NONE) => Type.defaultS tsig
555 | (NONE, SOME S) => S
556 | (SOME S, NONE) => S
557 | (SOME S, SOME S') =>
558 if Type.eq_sort tsig (S, S') then S'
559 else error ("Sort constraint " ^ Syntax.string_of_sort_global thy S ^
560 " inconsistent with default " ^ Syntax.string_of_sort_global thy S' ^
561 " for type variable " ^ quote (Term.string_of_vname' xi)));
566 fun intern_skolem ctxt def_type x =
568 val _ = no_skolem false x;
569 val sko = lookup_skolem ctxt x;
570 val is_const = can (read_const_proper ctxt) x orelse Long_Name.is_qualified x;
571 val is_declared = is_some (def_type (x, ~1));
573 if Variable.is_const ctxt x then NONE
574 else if is_some sko then sko
575 else if not is_const orelse is_declared then SOME x
581 fun term_context ctxt =
582 let val thy = theory_of ctxt in
583 {get_sort = get_sort thy (Variable.def_sort ctxt),
584 map_const = fn a => ((true, #1 (Term.dest_Const (read_const_proper ctxt a)))
585 handle ERROR _ => (false, Consts.intern (consts_of ctxt) a)),
586 map_free = intern_skolem ctxt (Variable.def_type ctxt false),
587 map_type = Sign.intern_tycons thy,
588 map_sort = Sign.intern_sort thy}
591 fun decode_term ctxt =
592 let val {get_sort, map_const, map_free, map_type, map_sort} = term_context ctxt
593 in Syntax.decode_term get_sort map_const map_free map_type map_sort end;
602 fun gen_cert prop ctxt t =
604 |> expand_abbrevs ctxt
605 |> (fn t' => #1 (Sign.certify' prop (Syntax.pp ctxt) false (consts_of ctxt) (theory_of ctxt) t')
606 handle TYPE (msg, _, _) => error msg
607 | TERM (msg, _) => error msg);
611 val cert_term = gen_cert false;
612 val cert_prop = gen_cert true;
617 (* type checking/inference *)
619 fun standard_infer_types ctxt ts =
620 let val Mode {pattern, ...} = get_mode ctxt in
621 TypeInfer.infer_types (Syntax.pp ctxt) (tsig_of ctxt) (Syntax.check_typs ctxt)
622 (try (Consts.the_constraint (consts_of ctxt))) (Variable.def_type ctxt pattern)
623 (Variable.names_of ctxt) (Variable.maxidx_of ctxt) ts
624 handle TYPE (msg, _, _) => error msg
629 fun standard_typ_check ctxt =
630 map (cert_typ_mode (Type.get_mode ctxt) ctxt) #>
631 map (prepare_patternT ctxt);
633 fun standard_term_check ctxt =
634 standard_infer_types ctxt #>
635 map (expand_abbrevs ctxt);
637 fun standard_term_uncheck ctxt =
638 map (contract_abbrevs ctxt);
640 fun add eq what f = Context.>> (what (fn xs => fn ctxt =>
641 let val xs' = f ctxt xs in if eq_list eq (xs, xs') then NONE else SOME (xs', ctxt) end));
645 val _ = add (op =) (Syntax.add_typ_check 0 "standard") standard_typ_check;
646 val _ = add (op aconv) (Syntax.add_term_check 0 "standard") standard_term_check;
647 val _ = add (op aconv) (Syntax.add_term_check 100 "fixate") prepare_patterns;
649 val _ = add (op aconv) (Syntax.add_term_uncheck 0 "standard") standard_term_uncheck;
655 (** inner syntax operations **)
659 fun parse_sort ctxt text =
661 val (syms, pos) = Syntax.parse_token Markup.sort text;
662 val S = Syntax.standard_parse_sort ctxt (syn_of ctxt)
663 (Sign.intern_sort (theory_of ctxt)) (syms, pos)
664 handle ERROR msg => cat_error msg ("Failed to parse sort" ^ Position.str_of pos)
667 fun parse_typ ctxt text =
669 val thy = ProofContext.theory_of ctxt;
670 val get_sort = get_sort thy (Variable.def_sort ctxt);
672 val (syms, pos) = Syntax.parse_token Markup.typ text;
673 val T = Sign.intern_tycons thy
674 (Syntax.standard_parse_typ ctxt (syn_of ctxt) get_sort (Sign.intern_sort thy) (syms, pos))
675 handle ERROR msg => cat_error msg ("Failed to parse type" ^ Position.str_of pos);
678 fun parse_term T ctxt text =
680 val thy = theory_of ctxt;
681 val {get_sort, map_const, map_free, map_type, map_sort} = term_context ctxt;
683 val (T', _) = TypeInfer.paramify_dummies T 0;
684 val (markup, kind) = if T' = propT then (Markup.prop, "proposition") else (Markup.term, "term");
685 val (syms, pos) = Syntax.parse_token markup text;
687 fun check t = (Syntax.check_term ctxt (TypeInfer.constrain T' t); NONE)
688 handle ERROR msg => SOME msg;
689 val t = Syntax.standard_parse_term (Syntax.pp ctxt) check get_sort map_const map_free
690 map_type map_sort ctxt (Sign.is_logtype thy) (syn_of ctxt) T' (syms, pos)
691 handle ERROR msg => cat_error msg ("Failed to parse " ^ kind ^ Position.str_of pos);
695 fun unparse_sort ctxt S =
696 Syntax.standard_unparse_sort ctxt (syn_of ctxt) (Sign.extern_sort (theory_of ctxt) S);
698 fun unparse_typ ctxt T =
699 Syntax.standard_unparse_typ ctxt (syn_of ctxt) (Sign.extern_typ (theory_of ctxt) T);
701 fun unparse_term ctxt t =
703 val thy = theory_of ctxt;
704 val syntax = syntax_of ctxt;
705 val consts = consts_of ctxt;
708 |> Sign.extern_term thy
709 |> Local_Syntax.extern_term syntax
710 |> Syntax.standard_unparse_term (Consts.extern consts) ctxt
711 (Local_Syntax.syn_of syntax) (not (PureThy.old_appl_syntax thy))
716 val _ = Syntax.install_operations
717 {parse_sort = parse_sort,
718 parse_typ = parse_typ,
719 parse_term = parse_term dummyT,
720 parse_prop = parse_term propT,
721 unparse_sort = unparse_sort,
722 unparse_typ = unparse_typ,
723 unparse_term = unparse_term};
729 (** export results **)
731 fun common_export is_goal inner outer =
732 map (Assumption.export is_goal inner outer) #>
733 Variable.export inner outer;
735 val goal_export = common_export true;
736 val export = common_export false;
738 fun export_morphism inner outer =
739 Assumption.export_morphism inner outer $>
740 Variable.export_morphism inner outer;
742 fun norm_export_morphism inner outer =
743 export_morphism inner outer $>
744 Morphism.thm_morphism Goal.norm_result;
748 (** term bindings **)
752 fun simult_matches ctxt (t, pats) =
753 (case Seq.pull (Unify.matchers (theory_of ctxt) (map (rpair t) pats)) of
754 NONE => error "Pattern match failed!"
755 | SOME (env, _) => Vartab.fold (fn (v, (_, t)) => cons (v, t)) (Envir.term_env env) []);
760 val bind_terms = fold (fn (xi, t) => fn ctxt =>
762 |> Variable.bind_term (xi, Option.map (cert_term (set_mode mode_default ctxt)) t));
767 fun drop_schematic (b as (xi, SOME t)) = if Term.exists_subterm is_Var t then (xi, NONE) else b
768 | drop_schematic b = b;
770 fun auto_bind f ts ctxt = ctxt |> bind_terms (map drop_schematic (f (theory_of ctxt) ts));
772 val auto_bind_goal = auto_bind Auto_Bind.goal;
773 val auto_bind_facts = auto_bind Auto_Bind.facts;
780 fun gen_bind prep_terms gen raw_binds ctxt =
782 fun prep_bind (raw_pats, t) ctxt1 =
784 val T = Term.fastype_of t;
785 val ctxt2 = Variable.declare_term t ctxt1;
786 val pats = prep_terms (set_mode mode_pattern ctxt2) T raw_pats;
787 val binds = simult_matches ctxt2 (t, pats);
788 in (binds, ctxt2) end;
790 val ts = prep_terms ctxt dummyT (map snd raw_binds);
791 val (binds, ctxt') = apfst flat (fold_map prep_bind (map fst raw_binds ~~ ts) ctxt);
793 if gen then map #1 binds ~~ Variable.exportT_terms ctxt' ctxt (map #2 binds)
795 val binds'' = map (apsnd SOME) binds';
797 tap (Variable.warn_extra_tfrees ctxt)
799 ctxt (*sic!*) |> fold Variable.declare_term (map #2 binds') |> bind_terms binds''
800 else ctxt' |> bind_terms binds'');
805 fun read_terms ctxt T =
806 map (Syntax.parse_term ctxt #> TypeInfer.constrain T) #> Syntax.check_terms ctxt;
808 val match_bind = gen_bind read_terms;
809 val match_bind_i = gen_bind (fn ctxt => fn _ => map (cert_term ctxt));
814 (* propositions with patterns *)
818 fun prep_propp mode prep_props (context, args) =
820 fun prep (_, raw_pats) (ctxt, prop :: props) =
821 let val ctxt' = Variable.declare_term prop ctxt
822 in ((prop, prep_props (set_mode mode_pattern ctxt') raw_pats), (ctxt', props)) end;
824 val (propp, (context', _)) = (fold_map o fold_map) prep args
825 (context, prep_props (set_mode mode context) (maps (map fst) args));
826 in (context', propp) end;
828 fun gen_bind_propp mode parse_prop (ctxt, raw_args) =
830 val (ctxt', args) = prep_propp mode parse_prop (ctxt, raw_args);
831 val binds = flat (flat (map (map (simult_matches ctxt')) args));
832 val propss = map (map #1) args;
834 (*generalize result: context evaluated now, binds added later*)
835 val gen = Variable.exportT_terms ctxt' ctxt;
836 fun gen_binds c = c |> bind_terms (map #1 binds ~~ map SOME (gen (map #2 binds)));
837 in (ctxt' |> bind_terms (map (apsnd SOME) binds), (propss, gen_binds)) end;
841 val read_propp = prep_propp mode_default Syntax.read_props;
842 val cert_propp = prep_propp mode_default (map o cert_prop);
843 val read_propp_schematic = prep_propp mode_schematic Syntax.read_props;
844 val cert_propp_schematic = prep_propp mode_schematic (map o cert_prop);
846 val bind_propp = gen_bind_propp mode_default Syntax.read_props;
847 val bind_propp_i = gen_bind_propp mode_default (map o cert_prop);
848 val bind_propp_schematic = gen_bind_propp mode_schematic Syntax.read_props;
849 val bind_propp_schematic_i = gen_bind_propp mode_schematic (map o cert_prop);
859 fun comp_incr_tac [] _ = no_tac
860 | comp_incr_tac (th :: ths) i =
861 (fn st => Goal.compose_hhf_tac (Drule.incr_indexes st th) i st) APPEND comp_incr_tac ths i;
863 fun fact_tac facts = Goal.norm_hhf_tac THEN' comp_incr_tac facts;
865 fun potential_facts ctxt prop =
866 Facts.could_unify (facts_of ctxt) (Term.strip_all_body prop);
868 fun some_fact_tac ctxt = SUBGOAL (fn (goal, i) => fact_tac (potential_facts ctxt goal) i);
875 fun retrieve_thms pick ctxt (Facts.Fact s) =
877 val (_, pos) = Syntax.read_token s;
878 val prop = Syntax.read_prop (set_mode mode_default ctxt) s
879 |> singleton (Variable.polymorphic ctxt);
882 Goal.prove ctxt [] [] prop (K (ALLGOALS (fact_tac [th])));
884 (case get_first (try prove_fact) (potential_facts ctxt prop) of
886 | NONE => error ("Failed to retrieve literal fact" ^ Position.str_of pos ^ ":\n" ^
887 Syntax.string_of_term ctxt prop))
889 | retrieve_thms pick ctxt xthmref =
891 val thy = theory_of ctxt;
892 val local_facts = facts_of ctxt;
893 val thmref = Facts.map_name_of_ref (Facts.intern local_facts) xthmref;
894 val name = Facts.name_of_ref thmref;
895 val pos = Facts.pos_of_ref xthmref;
897 if name = "" then [Thm.transfer thy Drule.dummy_thm]
899 (case Facts.lookup (Context.Proof ctxt) local_facts name of
900 SOME (_, ths) => (Position.report (Markup.local_fact name) pos;
901 map (Thm.transfer thy) (Facts.select thmref ths))
902 | NONE => PureThy.get_fact (Context.Proof ctxt) thy xthmref);
903 in pick name thms end;
907 val get_fact = retrieve_thms (K I);
908 val get_fact_single = retrieve_thms Facts.the_single;
910 fun get_thms ctxt = get_fact ctxt o Facts.named;
911 fun get_thm ctxt = get_fact_single ctxt o Facts.named;
920 fun update_thms _ (b, NONE) ctxt = ctxt |> map_facts (Facts.del (full_name ctxt b))
921 | update_thms do_props (b, SOME ths) ctxt = ctxt |> map_facts
922 (Facts.add_local do_props (naming_of ctxt) (b, ths) #> snd);
926 fun note_thmss kind = fold_map (fn ((b, more_attrs), raw_facts) => fn ctxt =>
928 val pos = Binding.pos_of b;
929 val name = full_name ctxt b;
930 val _ = Context_Position.report_visible ctxt (Markup.local_fact_decl name) pos;
932 val facts = PureThy.name_thmss false name raw_facts;
933 fun app (th, attrs) x =
934 swap (Library.foldl_map
935 (Thm.proof_attributes (surround (Thm.kind kind) (attrs @ more_attrs))) (x, th));
936 val (res, ctxt') = fold_map app facts ctxt;
937 val thms = PureThy.name_thms false false name (flat res);
938 val Mode {stmt, ...} = get_mode ctxt;
939 in ((name, thms), ctxt' |> update_thms stmt (b, SOME thms)) end);
941 fun put_thms do_props thms ctxt = ctxt
942 |> map_naming (K local_naming)
943 |> Context_Position.set_visible false
944 |> update_thms do_props (apfst Binding.name thms)
945 |> Context_Position.restore_visible ctxt
946 |> restore_naming ctxt;
956 fun declare_var (x, opt_T, mx) ctxt =
957 let val T = (case opt_T of SOME T => T | NONE => Syntax.mixfixT mx)
958 in ((x, T, mx), ctxt |> Variable.declare_constraints (Free (x, T))) end;
962 fun prep_vars prep_typ internal =
963 fold_map (fn (b, raw_T, mx) => fn ctxt =>
965 val x = Name.of_binding b;
966 val _ = Syntax.is_identifier (no_skolem internal x) orelse
967 error ("Illegal variable name: " ^ quote (Binding.str_of b));
971 else Type.no_tvars T handle TYPE (msg, _, _) => error msg;
972 val opt_T = Option.map (cond_tvars o cert_typ ctxt o prep_typ ctxt) raw_T;
973 val (_, ctxt') = ctxt |> declare_var (x, opt_T, mx);
974 in ((b, opt_T, mx), ctxt') end);
978 val read_vars = prep_vars Syntax.parse_typ false;
979 val cert_vars = prep_vars (K I) true;
984 (* authentic constants *)
988 fun const_ast_tr intern ctxt [Syntax.Variable c] =
990 val Const (c', _) = read_const_proper ctxt c;
991 val d = if intern then Syntax.mark_const c' else c;
992 in Syntax.Constant d end
993 | const_ast_tr _ _ asts = raise Syntax.AST ("const_ast_tr", asts);
997 val _ = Context.>> (Context.map_theory
999 [("_context_const", "id => logic", Delimfix "CONST _"),
1000 ("_context_const", "id => aprop", Delimfix "CONST _"),
1001 ("_context_const", "longid => logic", Delimfix "CONST _"),
1002 ("_context_const", "longid => aprop", Delimfix "CONST _"),
1003 ("_context_xconst", "id => logic", Delimfix "XCONST _"),
1004 ("_context_xconst", "id => aprop", Delimfix "XCONST _"),
1005 ("_context_xconst", "longid => logic", Delimfix "XCONST _"),
1006 ("_context_xconst", "longid => aprop", Delimfix "XCONST _")] #>
1007 Sign.add_advanced_trfuns
1008 ([("_context_const", const_ast_tr true), ("_context_xconst", const_ast_tr false)], [], [], [])));
1017 fun const_syntax _ (Free (x, T), mx) = SOME (true, (x, T, mx))
1018 | const_syntax ctxt (Const (c, _), mx) =
1019 (case try (Consts.type_scheme (consts_of ctxt)) c of
1020 SOME T => SOME (false, (Syntax.mark_const c, T, mx))
1022 | const_syntax _ _ = NONE;
1026 fun notation add mode args ctxt =
1028 (Local_Syntax.update_modesyntax (theory_of ctxt) add mode (map_filter (const_syntax ctxt) args));
1030 fun target_notation add mode args phi =
1032 val args' = args |> map_filter (fn (t, mx) =>
1033 let val t' = Morphism.term phi t
1034 in if Term.aconv_untyped (t, t') then SOME (t', mx) else NONE end);
1035 in Context.mapping (Sign.notation add mode args') (notation add mode args') end;
1040 (* local constants *)
1042 fun add_const_constraint (c, opt_T) ctxt =
1045 let val T = cert_typ ctxt raw_T
1046 in cert_term ctxt (Const (c, T)); T end;
1047 in ctxt |> (map_consts o apfst) (Consts.constrain (c, Option.map prepT opt_T)) end;
1049 fun add_abbrev mode (b, raw_t) ctxt =
1051 val t0 = cert_term (ctxt |> set_mode mode_abbrev) raw_t
1052 handle ERROR msg => cat_error msg ("in constant abbreviation " ^ quote (Binding.str_of b));
1053 val [t] = Variable.exportT_terms (Variable.declare_term t0 ctxt) ctxt [t0];
1054 val ((lhs, rhs), consts') = consts_of ctxt
1055 |> Consts.abbreviate (Syntax.pp ctxt) (tsig_of ctxt) (naming_of ctxt) mode (b, t);
1058 |> (map_consts o apfst) (K consts')
1059 |> Variable.declare_term rhs
1063 fun revert_abbrev mode c = (map_consts o apfst) (Consts.revert_abbrev mode c);
1070 fun prep_mixfix (x, T, mx) =
1071 if mx <> NoSyn andalso mx <> Structure andalso
1072 (can Name.dest_internal x orelse can Name.dest_skolem x) then
1073 error ("Illegal mixfix syntax for internal/skolem constant " ^ quote x)
1074 else (true, (x, T, mx));
1078 fun add_fixes raw_vars ctxt =
1080 val (vars, _) = cert_vars raw_vars ctxt;
1081 val (xs', ctxt') = Variable.add_fixes (map (Name.of_binding o #1) vars) ctxt;
1084 |> fold_map declare_var (map2 (fn x' => fn (_, T, mx) => (x', T, mx)) xs' vars)
1085 |-> (map_syntax o Local_Syntax.add_syntax (theory_of ctxt) o map prep_mixfix);
1086 val _ = (vars ~~ xs') |> List.app (fn ((b, _, _), x') =>
1087 Context_Position.report_visible ctxt (Markup.fixed_decl x') (Binding.pos_of b));
1088 in (xs', ctxt'') end;
1093 (* fixes vs. frees *)
1095 fun auto_fixes (ctxt, (propss, x)) =
1096 ((fold o fold) Variable.auto_fixes propss ctxt, (propss, x));
1098 fun bind_fixes xs ctxt =
1100 val (_, ctxt') = ctxt |> add_fixes (map (fn x => (Binding.name x, NONE, NoSyn)) xs);
1101 fun bind (t as Free (x, T)) =
1102 if member (op =) xs x then
1103 (case lookup_skolem ctxt' x of SOME x' => Free (x', T) | NONE => t)
1105 | bind (t $ u) = bind t $ bind u
1106 | bind (Abs (x, T, t)) = Abs (x, T, bind t)
1108 in (bind, ctxt') end;
1116 fun gen_assms prepp exp args ctxt =
1118 val cert = Thm.cterm_of (theory_of ctxt);
1119 val (propss, ctxt1) = swap (prepp (ctxt, map snd args));
1120 val _ = Variable.warn_extra_tfrees ctxt ctxt1;
1121 val (premss, ctxt2) = fold_burrow (Assumption.add_assms exp o map cert) propss ctxt1;
1124 |> auto_bind_facts (flat propss)
1125 |> note_thmss "" (map fst args ~~ map (map (fn th => ([th], []))) premss)
1130 val add_assms = gen_assms (apsnd #1 o bind_propp);
1131 val add_assms_i = gen_assms (apsnd #1 o bind_propp_i);
1141 fun rem_case name = remove (fn (x: string, (y, _)) => x = y) name;
1143 fun add_case _ ("", _) cases = cases
1144 | add_case _ (name, NONE) cases = rem_case name cases
1145 | add_case is_proper (name, SOME c) cases = (name, (c, is_proper)) :: rem_case name cases;
1147 fun prep_case name fxs c =
1149 fun replace (opt_x :: xs) ((y, T) :: ys) = (the_default y opt_x, T) :: replace xs ys
1150 | replace [] ys = ys
1151 | replace (_ :: _) [] = error ("Too many parameters for case " ^ quote name);
1152 val Rule_Cases.Case {fixes, assumes, binds, cases} = c;
1153 val fixes' = replace fxs fixes;
1154 val binds' = map drop_schematic binds;
1156 if null (fold (Term.add_tvarsT o snd) fixes []) andalso
1157 null (fold (fold Term.add_vars o snd) assumes []) then
1158 Rule_Cases.Case {fixes = fixes', assumes = assumes, binds = binds', cases = cases}
1159 else error ("Illegal schematic variable(s) in case " ^ quote name)
1162 fun fix (x, T) ctxt =
1164 val (bind, ctxt') = bind_fixes [x] ctxt;
1165 val t = bind (Free (x, T));
1166 in (t, ctxt' |> Variable.declare_constraints t) end;
1170 fun add_cases is_proper = map_cases o fold (add_case is_proper);
1172 fun case_result c ctxt =
1174 val Rule_Cases.Case {fixes, ...} = c;
1175 val (ts, ctxt') = ctxt |> fold_map fix fixes;
1176 val Rule_Cases.Case {assumes, binds, cases, ...} = Rule_Cases.apply ts c;
1179 |> bind_terms (map drop_schematic binds)
1180 |> add_cases true (map (apsnd SOME) cases)
1181 |> pair (assumes, (binds, cases))
1184 val apply_case = apfst fst oo case_result;
1186 fun get_case ctxt name xs =
1187 (case AList.lookup (op =) (cases_of ctxt) name of
1188 NONE => error ("Unknown case: " ^ quote name)
1189 | SOME (c, _) => prep_case name xs c);
1195 (** print context information **)
1199 val print_syntax = Syntax.print_syntax o syn_of;
1204 fun pretty_abbrevs show_globals ctxt =
1206 val ((space, consts), (_, globals)) =
1207 pairself (#constants o Consts.dest) (#consts (rep_context ctxt));
1208 fun add_abbr (_, (_, NONE)) = I
1209 | add_abbr (c, (T, SOME t)) =
1210 if not show_globals andalso Symtab.defined globals c then I
1211 else cons (c, Logic.mk_equals (Const (c, T), t));
1212 val abbrevs = Name_Space.extern_table (space, Symtab.make (Symtab.fold add_abbr consts []));
1214 if null abbrevs then []
1215 else [Pretty.big_list "abbreviations:" (map (pretty_term_abbrev ctxt o #2) abbrevs)]
1218 val print_abbrevs = Pretty.writeln o Pretty.chunks o pretty_abbrevs true;
1223 fun pretty_binds ctxt =
1225 val binds = Variable.binds_of ctxt;
1226 fun prt_bind (xi, (T, t)) = pretty_term_abbrev ctxt (Logic.mk_equals (Var (xi, T), t));
1228 if Vartab.is_empty binds then []
1229 else [Pretty.big_list "term bindings:" (map prt_bind (Vartab.dest binds))]
1232 val print_binds = Pretty.writeln o Pretty.chunks o pretty_binds;
1235 (* local theorems *)
1237 fun pretty_lthms ctxt =
1239 val local_facts = facts_of ctxt;
1240 val props = Facts.props local_facts;
1242 (if null props then [] else [("<unnamed>", props)]) @
1243 Facts.dest_static [] local_facts;
1245 if null facts then []
1246 else [Pretty.big_list "facts:" (map #1 (sort_wrt (#1 o #2) (map (`(pretty_fact ctxt)) facts)))]
1249 val print_lthms = Pretty.writeln o Pretty.chunks o pretty_lthms;
1252 (* local contexts *)
1256 fun pretty_case (name, (fixes, ((asms, (lets, cs)), ctxt))) =
1258 val prt_term = Syntax.pretty_term ctxt;
1260 fun prt_let (xi, t) = Pretty.block
1261 [Pretty.quote (prt_term (Var (xi, Term.fastype_of t))), Pretty.str " =", Pretty.brk 1,
1262 Pretty.quote (prt_term t)];
1264 fun prt_asm (a, ts) = Pretty.block (Pretty.breaks
1265 ((if a = "" then [] else [Pretty.str (a ^ ":")]) @ map (Pretty.quote o prt_term) ts));
1267 fun prt_sect _ _ _ [] = []
1268 | prt_sect s sep prt xs =
1269 [Pretty.block (Pretty.breaks (Pretty.str s ::
1270 flat (separate sep (map (single o prt) xs))))];
1272 Pretty.block (Pretty.fbreaks
1273 (Pretty.str (name ^ ":") ::
1274 prt_sect "fix" [] (Pretty.str o fst) fixes @
1275 prt_sect "let" [Pretty.str "and"] prt_let
1276 (map_filter (fn (xi, SOME t) => SOME (xi, t) | _ => NONE) lets) @
1277 (if forall (null o #2) asms then []
1278 else prt_sect "assume" [Pretty.str "and"] prt_asm asms) @
1279 prt_sect "subcases:" [] (Pretty.str o fst) cs))
1284 fun pretty_cases ctxt =
1286 fun add_case (_, (_, false)) = I
1287 | add_case (name, (c as Rule_Cases.Case {fixes, ...}, true)) =
1288 cons (name, (fixes, case_result c ctxt));
1289 val cases = fold add_case (cases_of ctxt) [];
1291 if null cases then []
1292 else [Pretty.big_list "cases:" (map pretty_case cases)]
1295 val print_cases = Pretty.writeln o Pretty.chunks o pretty_cases;
1302 val debug = Unsynchronized.ref false;
1303 val verbose = Unsynchronized.ref false;
1304 val prems_limit = Unsynchronized.ref ~1;
1306 fun pretty_ctxt ctxt =
1307 if ! prems_limit < 0 andalso not (! debug) then []
1310 val prt_term = Syntax.pretty_term ctxt;
1313 val structs = Local_Syntax.structs_of (syntax_of ctxt);
1315 if null structs then []
1316 else [Pretty.block (Pretty.str "structures:" :: Pretty.brk 1 ::
1317 Pretty.commas (map Pretty.str structs))];
1320 fun prt_fix (x, x') =
1321 if x = x' then Pretty.str x
1322 else Pretty.block [Pretty.str x, Pretty.str " =", Pretty.brk 1, prt_term (Syntax.free x')];
1324 rev (filter_out ((can Name.dest_internal orf member (op =) structs) o #1)
1325 (Variable.fixes_of ctxt));
1327 if null fixes then []
1328 else [Pretty.block (Pretty.str "fixed variables:" :: Pretty.brk 1 ::
1329 Pretty.commas (map prt_fix fixes))];
1332 val prems = Assumption.all_prems_of ctxt;
1333 val len = length prems;
1334 val suppressed = len - ! prems_limit;
1336 if null prems then []
1337 else [Pretty.big_list "prems:" ((if suppressed <= 0 then [] else [Pretty.str "..."]) @
1338 map (Display.pretty_thm ctxt) (drop suppressed prems))];
1339 in prt_structs @ prt_fixes @ prt_prems end;
1344 fun pretty_context ctxt =
1346 val is_verbose = ! verbose;
1347 fun verb f x = if is_verbose then f (x ()) else [];
1349 val prt_term = Syntax.pretty_term ctxt;
1350 val prt_typ = Syntax.pretty_typ ctxt;
1351 val prt_sort = Syntax.pretty_sort ctxt;
1354 val pretty_thy = Pretty.block
1355 [Pretty.str "theory:", Pretty.brk 1, Context.pretty_thy (theory_of ctxt)];
1358 fun prt_atom prt prtT (x, X) = Pretty.block
1359 [prt x, Pretty.str " ::", Pretty.brk 1, prtT X];
1361 fun prt_var (x, ~1) = prt_term (Syntax.free x)
1362 | prt_var xi = prt_term (Syntax.var xi);
1364 fun prt_varT (x, ~1) = prt_typ (TFree (x, []))
1365 | prt_varT xi = prt_typ (TVar (xi, []));
1367 val prt_defT = prt_atom prt_var prt_typ;
1368 val prt_defS = prt_atom prt_varT prt_sort;
1370 val (types, sorts) = Variable.constraints_of ctxt;
1372 verb single (K pretty_thy) @
1374 verb (pretty_abbrevs false) (K ctxt) @
1375 verb pretty_binds (K ctxt) @
1376 verb pretty_lthms (K ctxt) @
1377 verb pretty_cases (K ctxt) @
1378 verb single (fn () => Pretty.big_list "type constraints:" (map prt_defT (Vartab.dest types))) @
1379 verb single (fn () => Pretty.big_list "default sorts:" (map prt_defS (Vartab.dest sorts)))