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 consts_of: Proof.context -> Consts.T
30 val const_syntax_name: Proof.context -> string -> string
31 val the_const_constraint: Proof.context -> string -> typ
32 val mk_const: Proof.context -> string * typ list -> term
33 val set_syntax_mode: Syntax.mode -> Proof.context -> Proof.context
34 val restore_syntax_mode: Proof.context -> Proof.context -> Proof.context
35 val facts_of: Proof.context -> Facts.T
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 verbose: bool Unsynchronized.ref
125 val setmp_verbose_CRITICAL: ('a -> 'b) -> 'a -> 'b
126 val print_syntax: Proof.context -> unit
127 val print_abbrevs: Proof.context -> unit
128 val print_binds: Proof.context -> unit
129 val print_lthms: Proof.context -> unit
130 val print_cases: Proof.context -> unit
131 val debug: bool Unsynchronized.ref
132 val prems_limit: int Unsynchronized.ref
133 val pretty_ctxt: Proof.context -> Pretty.T list
134 val pretty_context: Proof.context -> Pretty.T list
137 structure ProofContext: PROOF_CONTEXT =
143 (** inner syntax mode **)
147 {stmt: bool, (*inner statement mode*)
148 pattern: bool, (*pattern binding schematic variables*)
149 schematic: bool, (*term referencing loose schematic variables*)
150 abbrev: bool}; (*abbrev mode -- no normalization*)
152 fun make_mode (stmt, pattern, schematic, abbrev) =
153 Mode {stmt = stmt, pattern = pattern, schematic = schematic, abbrev = abbrev};
155 val mode_default = make_mode (false, false, false, false);
156 val mode_stmt = make_mode (true, false, false, false);
157 val mode_pattern = make_mode (false, true, false, false);
158 val mode_schematic = make_mode (false, false, true, false);
159 val mode_abbrev = make_mode (false, false, false, true);
163 (** Isar proof context information **)
167 {mode: mode, (*inner syntax mode*)
168 naming: Name_Space.naming, (*local naming conventions*)
169 syntax: Local_Syntax.T, (*local syntax*)
170 consts: Consts.T * Consts.T, (*local/global consts*)
171 facts: Facts.T, (*local facts*)
172 cases: (string * (Rule_Cases.T * bool)) list}; (*named case contexts*)
174 fun make_ctxt (mode, naming, syntax, consts, facts, cases) =
175 Ctxt {mode = mode, naming = naming, syntax = syntax,
176 consts = consts, facts = facts, cases = cases};
178 val local_naming = Name_Space.default_naming |> Name_Space.add_path "local";
180 structure ContextData = ProofDataFun
184 make_ctxt (mode_default, local_naming, Local_Syntax.init thy,
185 (Sign.consts_of thy, Sign.consts_of thy), Facts.empty, []);
188 fun rep_context ctxt = ContextData.get ctxt |> (fn Ctxt args => args);
191 ContextData.map (fn Ctxt {mode, naming, syntax, consts, facts, cases} =>
192 make_ctxt (f (mode, naming, syntax, consts, facts, cases)));
194 fun set_mode mode = map_context (fn (_, naming, syntax, consts, facts, cases) =>
195 (mode, naming, syntax, consts, facts, cases));
198 map_context (fn (Mode {stmt, pattern, schematic, abbrev}, naming, syntax, consts, facts, cases) =>
199 (make_mode (f (stmt, pattern, schematic, abbrev)), naming, syntax, consts, facts, cases));
202 map_context (fn (mode, naming, syntax, consts, facts, cases) =>
203 (mode, f naming, syntax, consts, facts, cases));
206 map_context (fn (mode, naming, syntax, consts, facts, cases) =>
207 (mode, naming, f syntax, consts, facts, cases));
210 map_context (fn (mode, naming, syntax, consts, facts, cases) =>
211 (mode, naming, syntax, f consts, facts, cases));
214 map_context (fn (mode, naming, syntax, consts, facts, cases) =>
215 (mode, naming, syntax, consts, f facts, cases));
218 map_context (fn (mode, naming, syntax, consts, facts, cases) =>
219 (mode, naming, syntax, consts, facts, f cases));
221 val get_mode = #mode o rep_context;
222 val restore_mode = set_mode o get_mode;
223 val abbrev_mode = get_mode #> (fn Mode {abbrev, ...} => abbrev);
226 map_mode (fn (_, pattern, schematic, abbrev) => (stmt, pattern, schematic, abbrev));
228 val naming_of = #naming o rep_context;
229 val restore_naming = map_naming o K o naming_of
230 val full_name = Name_Space.full_name o naming_of;
232 val syntax_of = #syntax o rep_context;
233 val syn_of = Local_Syntax.syn_of o syntax_of;
234 val set_syntax_mode = map_syntax o Local_Syntax.set_mode;
235 val restore_syntax_mode = map_syntax o Local_Syntax.restore_mode o syntax_of;
237 val consts_of = #1 o #consts o rep_context;
238 val const_syntax_name = Consts.syntax_name o consts_of;
239 val the_const_constraint = Consts.the_constraint o consts_of;
241 fun mk_const ctxt (c, Ts) = Const (c, Consts.instance (consts_of ctxt) (c, Ts));
243 val facts_of = #facts o rep_context;
244 val cases_of = #cases o rep_context;
247 (* theory transfer *)
249 fun transfer_syntax thy =
250 map_syntax (Local_Syntax.rebuild thy) #>
251 map_consts (fn consts as (local_consts, global_consts) =>
252 let val thy_consts = Sign.consts_of thy in
253 if Consts.eq_consts (thy_consts, global_consts) then consts
254 else (Consts.merge (local_consts, thy_consts), thy_consts)
257 fun transfer thy = Context.raw_transfer thy #> transfer_syntax thy;
259 fun theory f ctxt = transfer (f (theory_of ctxt)) ctxt;
261 fun theory_result f ctxt =
262 let val (res, thy') = f (theory_of ctxt)
263 in (res, ctxt |> transfer thy') end;
267 (** pretty printing **)
271 fun extern_fact ctxt name =
273 val local_facts = facts_of ctxt;
274 val global_facts = PureThy.facts_of (theory_of ctxt);
276 if is_some (Facts.lookup (Context.Proof ctxt) local_facts name)
277 then Facts.extern local_facts name
278 else Facts.extern global_facts name
284 fun pretty_term_abbrev ctxt = Syntax.pretty_term (set_mode mode_abbrev ctxt);
286 fun pretty_fact_name ctxt a = Pretty.block
287 [Pretty.markup (Markup.fact a) [Pretty.str (extern_fact ctxt a)], Pretty.str ":"];
289 fun pretty_fact_aux ctxt flag ("", ths) =
290 Display.pretty_thms_aux ctxt flag ths
291 | pretty_fact_aux ctxt flag (a, [th]) = Pretty.block
292 [pretty_fact_name ctxt a, Pretty.brk 1, Display.pretty_thm_aux ctxt flag th]
293 | pretty_fact_aux ctxt flag (a, ths) = Pretty.block
294 (Pretty.fbreaks (pretty_fact_name ctxt a :: map (Display.pretty_thm_aux ctxt flag) ths));
296 fun pretty_fact ctxt = pretty_fact_aux ctxt true;
300 (** prepare types **)
304 fun read_typ_mode mode ctxt s =
305 Syntax.read_typ (Type.set_mode mode ctxt) s;
307 val read_typ = read_typ_mode Type.mode_default;
308 val read_typ_syntax = read_typ_mode Type.mode_syntax;
309 val read_typ_abbrev = read_typ_mode Type.mode_abbrev;
314 fun cert_typ_mode mode ctxt T =
315 Sign.certify_typ_mode mode (theory_of ctxt) T
316 handle TYPE (msg, _, _) => error msg;
318 val cert_typ = cert_typ_mode Type.mode_default;
319 val cert_typ_syntax = cert_typ_mode Type.mode_syntax;
320 val cert_typ_abbrev = cert_typ_mode Type.mode_abbrev;
324 (** prepare variables **)
326 (* internalize Skolem constants *)
328 val lookup_skolem = AList.lookup (op =) o Variable.fixes_of;
329 fun get_skolem ctxt x = the_default x (lookup_skolem ctxt x);
331 fun no_skolem internal x =
332 if can Name.dest_skolem x then
333 error ("Illegal reference to internal Skolem constant: " ^ quote x)
334 else if not internal andalso can Name.dest_internal x then
335 error ("Illegal reference to internal variable: " ^ quote x)
339 (* revert Skolem constants -- if possible *)
341 fun revert_skolem ctxt x =
342 (case find_first (fn (_, y) => y = x) (Variable.fixes_of ctxt) of
343 SOME (x', _) => if lookup_skolem ctxt x' = SOME x then x' else x
347 (* default token translations *)
351 fun free_or_skolem ctxt x =
352 (if can Name.dest_skolem x then Pretty.mark Markup.skolem (Pretty.str (revert_skolem ctxt x))
353 else Pretty.mark Markup.free (Pretty.str x))
355 (if Variable.is_fixed ctxt x orelse Syntax.is_pretty_global ctxt then Markup.fixed x
358 fun var_or_skolem _ s =
359 (case Lexicon.read_variable s of
361 (case try Name.dest_skolem x of
362 NONE => Pretty.mark Markup.var (Pretty.str s)
363 | SOME x' => Pretty.mark Markup.skolem
364 (Pretty.str (setmp_CRITICAL show_question_marks true Term.string_of_vname (x', i))))
365 | NONE => Pretty.mark Markup.var (Pretty.str s));
367 fun class_markup _ c = (* FIXME authentic name *)
368 Pretty.mark (Markup.tclassN, []) (Pretty.str c);
370 fun plain_markup m _ s = Pretty.mark m (Pretty.str s);
373 Syntax.tokentrans_mode ""
374 [("class", class_markup),
375 ("tfree", plain_markup Markup.tfree),
376 ("tvar", plain_markup Markup.tvar),
377 ("free", free_or_skolem),
378 ("bound", plain_markup Markup.bound),
379 ("var", var_or_skolem),
380 ("numeral", plain_markup Markup.numeral),
381 ("inner_string", plain_markup Markup.inner_string)];
383 in val _ = Context.>> (Context.map_theory (Sign.add_tokentrfuns token_trans)) end;
387 (** prepare terms and propositions **)
389 (* inferred types of parameters *)
391 fun infer_type ctxt x =
392 Term.fastype_of (singleton (Syntax.check_terms (set_mode mode_schematic ctxt))
395 fun inferred_param x ctxt =
396 let val T = infer_type ctxt x
397 in (T, ctxt |> Variable.declare_term (Free (x, T))) end;
399 fun inferred_fixes ctxt =
401 val xs = rev (map #2 (Variable.fixes_of ctxt));
402 val (Ts, ctxt') = fold_map inferred_param xs ctxt;
403 in (xs ~~ Ts, ctxt') end;
406 (* type and constant names *)
410 val token_content = Syntax.read_token #>> Symbol_Pos.content;
412 fun prep_const_proper ctxt (c, pos) =
413 let val t as (Const (d, _)) =
414 (case Variable.lookup_const ctxt c of
415 SOME d => Const (d, Consts.type_scheme (consts_of ctxt) d handle TYPE (msg, _, _) => error msg)
416 | NONE => Consts.read_const (consts_of ctxt) c)
417 in Position.report (Markup.const d) pos; t end;
421 fun read_tyname ctxt str =
423 val thy = theory_of ctxt;
424 val (c, pos) = token_content str;
426 if Syntax.is_tid c then
427 (Position.report Markup.tfree pos;
428 TFree (c, the_default (Sign.defaultS thy) (Variable.def_sort ctxt (c, ~1))))
431 val d = Sign.intern_type thy c;
432 val _ = Position.report (Markup.tycon d) pos;
433 in Type (d, replicate (Sign.arity_number thy d) dummyT) end
436 fun read_const_proper ctxt = prep_const_proper ctxt o token_content;
438 fun read_const ctxt str =
439 let val (c, pos) = token_content str in
440 (case (lookup_skolem ctxt c, Variable.is_const ctxt c) of
442 (Position.report (Markup.name x
443 (if can Name.dest_skolem x then Markup.skolem else Markup.free)) pos;
444 Free (x, infer_type ctxt x))
445 | _ => prep_const_proper ctxt (c, pos))
453 fun read_term_mode mode ctxt = Syntax.read_term (set_mode mode ctxt);
455 val read_term_pattern = read_term_mode mode_pattern;
456 val read_term_schematic = read_term_mode mode_schematic;
457 val read_term_abbrev = read_term_mode mode_abbrev;
460 (* local abbreviations *)
462 val tsig_of = Sign.tsig_of o ProofContext.theory_of;
466 fun certify_consts ctxt = Consts.certify (Syntax.pp ctxt) (tsig_of ctxt)
467 (not (abbrev_mode ctxt)) (consts_of ctxt);
469 fun reject_schematic (Var (xi, _)) =
470 error ("Unbound schematic variable: " ^ Term.string_of_vname xi)
471 | reject_schematic (Abs (_, _, t)) = reject_schematic t
472 | reject_schematic (t $ u) = (reject_schematic t; reject_schematic u)
473 | reject_schematic _ = ();
475 fun expand_binds ctxt =
476 let val Mode {pattern, schematic, ...} = get_mode ctxt in
478 else Variable.expand_binds ctxt #> (if schematic then I else tap reject_schematic)
483 fun expand_abbrevs ctxt = certify_consts ctxt #> expand_binds ctxt;
488 fun contract_abbrevs ctxt t =
490 val thy = theory_of ctxt;
491 val consts = consts_of ctxt;
492 val Mode {abbrev, ...} = get_mode ctxt;
493 val retrieve = Consts.retrieve_abbrevs consts (print_mode_value () @ [""]);
494 fun match_abbrev u = Option.map #1 (get_first (Pattern.match_rew thy u) (retrieve u));
496 if abbrev orelse print_mode_active "no_abbrevs" orelse not (can Term.type_of t) then t
497 else Pattern.rewrite_term thy [] [match_abbrev] t
503 fun prepare_patternT ctxt T =
505 val Mode {pattern, schematic, ...} = get_mode ctxt;
507 pattern orelse schematic orelse
508 T |> Term.exists_subtype
510 not (TypeInfer.is_param xi) andalso
511 error ("Illegal schematic type variable: " ^ Term.string_of_vname xi)
518 structure Allow_Dummies = ProofDataFun(type T = bool fun init _ = false);
520 fun check_dummies ctxt t =
521 if Allow_Dummies.get ctxt then t
522 else Term.no_dummy_patterns t handle TERM _ => error "Illegal dummy pattern(s) in term";
524 fun prepare_dummies ts = #1 (fold_map Term.replace_dummy_patterns ts 1);
528 val allow_dummies = Allow_Dummies.put true;
530 fun prepare_patterns ctxt =
531 let val Mode {pattern, ...} = get_mode ctxt in
532 TypeInfer.fixate_params (Variable.names_of ctxt) #>
533 pattern ? Variable.polymorphic ctxt #>
534 (map o Term.map_types) (prepare_patternT ctxt) #>
535 (if pattern then prepare_dummies else map (check_dummies ctxt))
541 (* decoding raw terms (syntax trees) *)
545 fun get_sort thy def_sort raw_env =
547 val tsig = Sign.tsig_of thy;
549 fun eq ((xi, S), (xi', S')) =
550 Term.eq_ix (xi, xi') andalso Type.eq_sort tsig (S, S');
551 val env = distinct eq raw_env;
552 val _ = (case duplicates (eq_fst (op =)) env of [] => ()
553 | dups => error ("Inconsistent sort constraints for type variable(s) "
554 ^ commas_quote (map (Term.string_of_vname' o fst) dups)));
557 (case (AList.lookup (op =) env xi, def_sort xi) of
558 (NONE, NONE) => Type.defaultS tsig
559 | (NONE, SOME S) => S
560 | (SOME S, NONE) => S
561 | (SOME S, SOME S') =>
562 if Type.eq_sort tsig (S, S') then S'
563 else error ("Sort constraint " ^ Syntax.string_of_sort_global thy S ^
564 " inconsistent with default " ^ Syntax.string_of_sort_global thy S' ^
565 " for type variable " ^ quote (Term.string_of_vname' xi)));
570 fun intern_skolem ctxt def_type x =
572 val _ = no_skolem false x;
573 val sko = lookup_skolem ctxt x;
574 val is_const = can (read_const_proper ctxt) x orelse Long_Name.is_qualified x;
575 val is_declared = is_some (def_type (x, ~1));
577 if Variable.is_const ctxt x then NONE
578 else if is_some sko then sko
579 else if not is_const orelse is_declared then SOME x
585 fun term_context ctxt =
586 let val thy = theory_of ctxt in
587 {get_sort = get_sort thy (Variable.def_sort ctxt),
588 map_const = fn a => ((true, #1 (Term.dest_Const (read_const_proper ctxt a)))
589 handle ERROR _ => (false, Consts.intern (consts_of ctxt) a)),
590 map_free = intern_skolem ctxt (Variable.def_type ctxt false),
591 map_type = Sign.intern_tycons thy,
592 map_sort = Sign.intern_sort thy}
595 fun decode_term ctxt =
596 let val {get_sort, map_const, map_free, map_type, map_sort} = term_context ctxt
597 in Syntax.decode_term get_sort map_const map_free map_type map_sort end;
606 fun gen_cert prop ctxt t =
608 |> expand_abbrevs ctxt
609 |> (fn t' => #1 (Sign.certify' prop (Syntax.pp ctxt) false (consts_of ctxt) (theory_of ctxt) t')
610 handle TYPE (msg, _, _) => error msg
611 | TERM (msg, _) => error msg);
615 val cert_term = gen_cert false;
616 val cert_prop = gen_cert true;
621 (* type checking/inference *)
623 fun standard_infer_types ctxt ts =
624 let val Mode {pattern, ...} = get_mode ctxt in
625 TypeInfer.infer_types (Syntax.pp ctxt) (tsig_of ctxt) (Syntax.check_typs ctxt)
626 (try (Consts.the_constraint (consts_of ctxt))) (Variable.def_type ctxt pattern)
627 (Variable.names_of ctxt) (Variable.maxidx_of ctxt) ts
628 handle TYPE (msg, _, _) => error msg
633 fun standard_typ_check ctxt =
634 map (cert_typ_mode (Type.get_mode ctxt) ctxt) #>
635 map (prepare_patternT ctxt);
637 fun standard_term_check ctxt =
638 standard_infer_types ctxt #>
639 map (expand_abbrevs ctxt);
641 fun standard_term_uncheck ctxt =
642 map (contract_abbrevs ctxt);
644 fun add eq what f = Context.>> (what (fn xs => fn ctxt =>
645 let val xs' = f ctxt xs in if eq_list eq (xs, xs') then NONE else SOME (xs', ctxt) end));
649 val _ = add (op =) (Syntax.add_typ_check 0 "standard") standard_typ_check;
650 val _ = add (op aconv) (Syntax.add_term_check 0 "standard") standard_term_check;
651 val _ = add (op aconv) (Syntax.add_term_check 100 "fixate") prepare_patterns;
653 val _ = add (op aconv) (Syntax.add_term_uncheck 0 "standard") standard_term_uncheck;
659 (** inner syntax operations **)
663 fun parse_sort ctxt text =
665 val (syms, pos) = Syntax.parse_token Markup.sort text;
666 val S = Syntax.standard_parse_sort ctxt (syn_of ctxt)
667 (Sign.intern_sort (theory_of ctxt)) (syms, pos)
668 handle ERROR msg => cat_error msg ("Failed to parse sort" ^ Position.str_of pos)
671 fun parse_typ ctxt text =
673 val thy = ProofContext.theory_of ctxt;
674 val get_sort = get_sort thy (Variable.def_sort ctxt);
676 val (syms, pos) = Syntax.parse_token Markup.typ text;
677 val T = Sign.intern_tycons thy
678 (Syntax.standard_parse_typ ctxt (syn_of ctxt) get_sort (Sign.intern_sort thy) (syms, pos))
679 handle ERROR msg => cat_error msg ("Failed to parse type" ^ Position.str_of pos);
682 fun parse_term T ctxt text =
684 val thy = theory_of ctxt;
685 val {get_sort, map_const, map_free, map_type, map_sort} = term_context ctxt;
687 val (T', _) = TypeInfer.paramify_dummies T 0;
688 val (markup, kind) = if T' = propT then (Markup.prop, "proposition") else (Markup.term, "term");
689 val (syms, pos) = Syntax.parse_token markup text;
691 fun check t = (Syntax.check_term ctxt (TypeInfer.constrain T' t); NONE)
692 handle ERROR msg => SOME msg;
693 val t = Syntax.standard_parse_term (Syntax.pp ctxt) check get_sort map_const map_free
694 map_type map_sort ctxt (Sign.is_logtype thy) (syn_of ctxt) T' (syms, pos)
695 handle ERROR msg => cat_error msg ("Failed to parse " ^ kind ^ Position.str_of pos);
699 fun unparse_sort ctxt S =
700 Syntax.standard_unparse_sort ctxt (syn_of ctxt) (Sign.extern_sort (theory_of ctxt) S);
702 fun unparse_typ ctxt T =
703 Syntax.standard_unparse_typ ctxt (syn_of ctxt) (Sign.extern_typ (theory_of ctxt) T);
705 fun unparse_term ctxt t =
707 val thy = theory_of ctxt;
708 val syntax = syntax_of ctxt;
709 val consts = consts_of ctxt;
712 |> Sign.extern_term (Consts.extern_early consts) thy
713 |> Local_Syntax.extern_term syntax
714 |> Syntax.standard_unparse_term (Consts.extern consts) ctxt (Local_Syntax.syn_of syntax)
715 (not (PureThy.old_appl_syntax thy))
720 val _ = Syntax.install_operations
721 {parse_sort = parse_sort,
722 parse_typ = parse_typ,
723 parse_term = parse_term dummyT,
724 parse_prop = parse_term propT,
725 unparse_sort = unparse_sort,
726 unparse_typ = unparse_typ,
727 unparse_term = unparse_term};
733 (** export results **)
735 fun common_export is_goal inner outer =
736 map (Assumption.export is_goal inner outer) #>
737 Variable.export inner outer;
739 val goal_export = common_export true;
740 val export = common_export false;
742 fun export_morphism inner outer =
743 Assumption.export_morphism inner outer $>
744 Variable.export_morphism inner outer;
746 fun norm_export_morphism inner outer =
747 export_morphism inner outer $>
748 Morphism.thm_morphism Goal.norm_result;
752 (** term bindings **)
756 fun simult_matches ctxt (t, pats) =
757 (case Seq.pull (Unify.matchers (theory_of ctxt) (map (rpair t) pats)) of
758 NONE => error "Pattern match failed!"
759 | SOME (env, _) => Vartab.fold (fn (v, (_, t)) => cons (v, t)) (Envir.term_env env) []);
764 val bind_terms = fold (fn (xi, t) => fn ctxt =>
766 |> Variable.bind_term (xi, Option.map (cert_term (set_mode mode_default ctxt)) t));
771 fun drop_schematic (b as (xi, SOME t)) = if Term.exists_subterm is_Var t then (xi, NONE) else b
772 | drop_schematic b = b;
774 fun auto_bind f ts ctxt = ctxt |> bind_terms (map drop_schematic (f (theory_of ctxt) ts));
776 val auto_bind_goal = auto_bind Auto_Bind.goal;
777 val auto_bind_facts = auto_bind Auto_Bind.facts;
784 fun gen_bind prep_terms gen raw_binds ctxt =
786 fun prep_bind (raw_pats, t) ctxt1 =
788 val T = Term.fastype_of t;
789 val ctxt2 = Variable.declare_term t ctxt1;
790 val pats = prep_terms (set_mode mode_pattern ctxt2) T raw_pats;
791 val binds = simult_matches ctxt2 (t, pats);
792 in (binds, ctxt2) end;
794 val ts = prep_terms ctxt dummyT (map snd raw_binds);
795 val (binds, ctxt') = apfst flat (fold_map prep_bind (map fst raw_binds ~~ ts) ctxt);
797 if gen then map #1 binds ~~ Variable.exportT_terms ctxt' ctxt (map #2 binds)
799 val binds'' = map (apsnd SOME) binds';
801 tap (Variable.warn_extra_tfrees ctxt)
803 ctxt (*sic!*) |> fold Variable.declare_term (map #2 binds') |> bind_terms binds''
804 else ctxt' |> bind_terms binds'');
809 fun read_terms ctxt T =
810 map (Syntax.parse_term ctxt #> TypeInfer.constrain T) #> Syntax.check_terms ctxt;
812 val match_bind = gen_bind read_terms;
813 val match_bind_i = gen_bind (fn ctxt => fn _ => map (cert_term ctxt));
818 (* propositions with patterns *)
822 fun prep_propp mode prep_props (context, args) =
824 fun prep (_, raw_pats) (ctxt, prop :: props) =
825 let val ctxt' = Variable.declare_term prop ctxt
826 in ((prop, prep_props (set_mode mode_pattern ctxt') raw_pats), (ctxt', props)) end;
828 val (propp, (context', _)) = (fold_map o fold_map) prep args
829 (context, prep_props (set_mode mode context) (maps (map fst) args));
830 in (context', propp) end;
832 fun gen_bind_propp mode parse_prop (ctxt, raw_args) =
834 val (ctxt', args) = prep_propp mode parse_prop (ctxt, raw_args);
835 val binds = flat (flat (map (map (simult_matches ctxt')) args));
836 val propss = map (map #1) args;
838 (*generalize result: context evaluated now, binds added later*)
839 val gen = Variable.exportT_terms ctxt' ctxt;
840 fun gen_binds c = c |> bind_terms (map #1 binds ~~ map SOME (gen (map #2 binds)));
841 in (ctxt' |> bind_terms (map (apsnd SOME) binds), (propss, gen_binds)) end;
845 val read_propp = prep_propp mode_default Syntax.read_props;
846 val cert_propp = prep_propp mode_default (map o cert_prop);
847 val read_propp_schematic = prep_propp mode_schematic Syntax.read_props;
848 val cert_propp_schematic = prep_propp mode_schematic (map o cert_prop);
850 val bind_propp = gen_bind_propp mode_default Syntax.read_props;
851 val bind_propp_i = gen_bind_propp mode_default (map o cert_prop);
852 val bind_propp_schematic = gen_bind_propp mode_schematic Syntax.read_props;
853 val bind_propp_schematic_i = gen_bind_propp mode_schematic (map o cert_prop);
863 fun comp_incr_tac [] _ = no_tac
864 | comp_incr_tac (th :: ths) i =
865 (fn st => Goal.compose_hhf_tac (Drule.incr_indexes st th) i st) APPEND comp_incr_tac ths i;
867 fun fact_tac facts = Goal.norm_hhf_tac THEN' comp_incr_tac facts;
869 fun potential_facts ctxt prop =
870 Facts.could_unify (facts_of ctxt) (Term.strip_all_body prop);
872 fun some_fact_tac ctxt = SUBGOAL (fn (goal, i) => fact_tac (potential_facts ctxt goal) i);
879 fun retrieve_thms pick ctxt (Facts.Fact s) =
881 val (_, pos) = Syntax.read_token s;
882 val prop = Syntax.read_prop (set_mode mode_default ctxt) s
883 |> singleton (Variable.polymorphic ctxt);
886 Goal.prove ctxt [] [] prop (K (ALLGOALS (fact_tac [th])))
887 |> Thm.default_position_of th;
889 (case get_first (try prove_fact) (potential_facts ctxt prop) of
891 | NONE => error ("Failed to retrieve literal fact" ^ Position.str_of pos ^ ":\n" ^
892 Syntax.string_of_term ctxt prop))
894 | retrieve_thms pick ctxt xthmref =
896 val thy = theory_of ctxt;
897 val local_facts = facts_of ctxt;
898 val thmref = Facts.map_name_of_ref (Facts.intern local_facts) xthmref;
899 val name = Facts.name_of_ref thmref;
900 val pos = Facts.pos_of_ref xthmref;
902 if name = "" then [Thm.transfer thy Drule.dummy_thm]
904 (case Facts.lookup (Context.Proof ctxt) local_facts name of
905 SOME (_, ths) => (Position.report (Markup.local_fact name) pos;
906 map (Thm.transfer thy) (Facts.select thmref ths))
907 | NONE => PureThy.get_fact (Context.Proof ctxt) thy xthmref);
908 in pick name thms end;
912 val get_fact = retrieve_thms (K I);
913 val get_fact_single = retrieve_thms Facts.the_single;
915 fun get_thms ctxt = get_fact ctxt o Facts.named;
916 fun get_thm ctxt = get_fact_single ctxt o Facts.named;
925 fun update_thms _ (b, NONE) ctxt = ctxt |> map_facts (Facts.del (full_name ctxt b))
926 | update_thms do_props (b, SOME ths) ctxt = ctxt |> map_facts
927 (Facts.add_local do_props (naming_of ctxt) (b, ths) #> snd);
931 fun note_thmss kind = fold_map (fn ((b, more_attrs), raw_facts) => fn ctxt =>
933 val pos = Binding.pos_of b;
934 val name = full_name ctxt b;
935 val _ = Context_Position.report_visible ctxt (Markup.local_fact_decl name) pos;
937 val facts = PureThy.name_thmss false pos name raw_facts;
938 fun app (th, attrs) x =
939 swap (Library.foldl_map
940 (Thm.proof_attributes (surround (Thm.kind kind) (attrs @ more_attrs))) (x, th));
941 val (res, ctxt') = fold_map app facts ctxt;
942 val thms = PureThy.name_thms false false pos name (flat res);
943 val Mode {stmt, ...} = get_mode ctxt;
944 in ((name, thms), ctxt' |> update_thms stmt (b, SOME thms)) end);
946 fun put_thms do_props thms ctxt = ctxt
947 |> map_naming (K local_naming)
948 |> Context_Position.set_visible false
949 |> update_thms do_props (apfst Binding.name thms)
950 |> Context_Position.restore_visible ctxt
951 |> restore_naming ctxt;
961 fun declare_var (x, opt_T, mx) ctxt =
962 let val T = (case opt_T of SOME T => T | NONE => Syntax.mixfixT mx)
963 in ((x, T, mx), ctxt |> Variable.declare_constraints (Free (x, T))) end;
967 fun prep_vars prep_typ internal =
968 fold_map (fn (raw_b, raw_T, raw_mx) => fn ctxt =>
970 val raw_x = Name.of_binding raw_b;
971 val (x, mx) = Syntax.const_mixfix raw_x raw_mx;
972 val _ = Syntax.is_identifier (no_skolem internal x) orelse
973 error ("Illegal variable name: " ^ quote x);
977 else Type.no_tvars T handle TYPE (msg, _, _) => error msg;
978 val opt_T = Option.map (cond_tvars o cert_typ ctxt o prep_typ ctxt) raw_T;
979 val var = (Binding.map_name (K x) raw_b, opt_T, mx);
980 in (var, ctxt |> declare_var (x, opt_T, mx) |> #2) end);
984 val read_vars = prep_vars Syntax.parse_typ false;
985 val cert_vars = prep_vars (K I) true;
990 (* authentic constants *)
994 fun const_ast_tr intern ctxt [Syntax.Variable c] =
996 val Const (c', _) = read_const_proper ctxt c;
997 val d = if intern then const_syntax_name ctxt c' else c;
998 in Syntax.Constant d end
999 | const_ast_tr _ _ asts = raise Syntax.AST ("const_ast_tr", asts);
1003 val _ = Context.>> (Context.map_theory
1005 [("_context_const", "id => logic", Delimfix "CONST _"),
1006 ("_context_const", "id => aprop", Delimfix "CONST _"),
1007 ("_context_const", "longid => logic", Delimfix "CONST _"),
1008 ("_context_const", "longid => aprop", Delimfix "CONST _"),
1009 ("_context_xconst", "id => logic", Delimfix "XCONST _"),
1010 ("_context_xconst", "id => aprop", Delimfix "XCONST _"),
1011 ("_context_xconst", "longid => logic", Delimfix "XCONST _"),
1012 ("_context_xconst", "longid => aprop", Delimfix "XCONST _")] #>
1013 Sign.add_advanced_trfuns
1014 ([("_context_const", const_ast_tr true), ("_context_xconst", const_ast_tr false)], [], [], [])));
1023 fun const_syntax _ (Free (x, T), mx) = SOME (true, (x, T, mx))
1024 | const_syntax ctxt (Const (c, _), mx) =
1025 Option.map (pair false) (try (Consts.syntax (consts_of ctxt)) (c, mx))
1026 | const_syntax _ _ = NONE;
1030 fun notation add mode args ctxt =
1032 (Local_Syntax.update_modesyntax (theory_of ctxt) add mode (map_filter (const_syntax ctxt) args));
1034 fun target_notation add mode args phi =
1035 let val args' = filter (fn (t, _) => Type.similar_types (t, Morphism.term phi t)) args;
1036 in Context.mapping (Sign.notation add mode args') (notation add mode args') end;
1041 (* local constants *)
1043 fun add_const_constraint (c, opt_T) ctxt =
1046 let val T = cert_typ ctxt raw_T
1047 in cert_term ctxt (Const (c, T)); T end;
1048 in ctxt |> (map_consts o apfst) (Consts.constrain (c, Option.map prepT opt_T)) end;
1050 fun add_abbrev mode (b, raw_t) ctxt =
1052 val t0 = cert_term (ctxt |> set_mode mode_abbrev) raw_t
1053 handle ERROR msg => cat_error msg ("in constant abbreviation " ^ quote (Binding.str_of b));
1054 val [t] = Variable.exportT_terms (Variable.declare_term t0 ctxt) ctxt [t0];
1055 val ((lhs, rhs), consts') = consts_of ctxt
1056 |> Consts.abbreviate (Syntax.pp ctxt) (tsig_of ctxt) (naming_of ctxt) mode (b, t);
1059 |> (map_consts o apfst) (K consts')
1060 |> Variable.declare_term rhs
1064 fun revert_abbrev mode c = (map_consts o apfst) (Consts.revert_abbrev mode c);
1071 fun prep_mixfix (x, T, mx) =
1072 if mx <> NoSyn andalso mx <> Structure andalso
1073 (can Name.dest_internal x orelse can Name.dest_skolem x) then
1074 error ("Illegal mixfix syntax for internal/skolem constant " ^ quote x)
1075 else (true, (x, T, mx));
1079 fun add_fixes raw_vars ctxt =
1081 val (vars, _) = cert_vars raw_vars ctxt;
1082 val (xs', ctxt') = Variable.add_fixes (map (Name.of_binding o #1) vars) ctxt;
1085 |> fold_map declare_var (map2 (fn x' => fn (_, T, mx) => (x', T, mx)) xs' vars)
1086 |-> (map_syntax o Local_Syntax.add_syntax (theory_of ctxt) o map prep_mixfix);
1087 val _ = (vars ~~ xs') |> List.app (fn ((b, _, _), x') =>
1088 Context_Position.report_visible ctxt (Markup.fixed_decl x') (Binding.pos_of b));
1089 in (xs', ctxt'') end;
1094 (* fixes vs. frees *)
1096 fun auto_fixes (ctxt, (propss, x)) =
1097 ((fold o fold) Variable.auto_fixes propss ctxt, (propss, x));
1099 fun bind_fixes xs ctxt =
1101 val (_, ctxt') = ctxt |> add_fixes (map (fn x => (Binding.name x, NONE, NoSyn)) xs);
1102 fun bind (t as Free (x, T)) =
1103 if member (op =) xs x then
1104 (case lookup_skolem ctxt' x of SOME x' => Free (x', T) | NONE => t)
1106 | bind (t $ u) = bind t $ bind u
1107 | bind (Abs (x, T, t)) = Abs (x, T, bind t)
1109 in (bind, ctxt') end;
1117 fun gen_assms prepp exp args ctxt =
1119 val cert = Thm.cterm_of (theory_of ctxt);
1120 val (propss, ctxt1) = swap (prepp (ctxt, map snd args));
1121 val _ = Variable.warn_extra_tfrees ctxt ctxt1;
1122 val (premss, ctxt2) = fold_burrow (Assumption.add_assms exp o map cert) propss ctxt1;
1125 |> auto_bind_facts (flat propss)
1126 |> note_thmss Thm.assumptionK (map fst args ~~ map (map (fn th => ([th], []))) premss)
1131 val add_assms = gen_assms (apsnd #1 o bind_propp);
1132 val add_assms_i = gen_assms (apsnd #1 o bind_propp_i);
1142 fun rem_case name = remove (fn (x: string, (y, _)) => x = y) name;
1144 fun add_case _ ("", _) cases = cases
1145 | add_case _ (name, NONE) cases = rem_case name cases
1146 | add_case is_proper (name, SOME c) cases = (name, (c, is_proper)) :: rem_case name cases;
1148 fun prep_case name fxs c =
1150 fun replace (opt_x :: xs) ((y, T) :: ys) = (the_default y opt_x, T) :: replace xs ys
1151 | replace [] ys = ys
1152 | replace (_ :: _) [] = error ("Too many parameters for case " ^ quote name);
1153 val Rule_Cases.Case {fixes, assumes, binds, cases} = c;
1154 val fixes' = replace fxs fixes;
1155 val binds' = map drop_schematic binds;
1157 if null (fold (Term.add_tvarsT o snd) fixes []) andalso
1158 null (fold (fold Term.add_vars o snd) assumes []) then
1159 Rule_Cases.Case {fixes = fixes', assumes = assumes, binds = binds', cases = cases}
1160 else error ("Illegal schematic variable(s) in case " ^ quote name)
1163 fun fix (x, T) ctxt =
1165 val (bind, ctxt') = bind_fixes [x] ctxt;
1166 val t = bind (Free (x, T));
1167 in (t, ctxt' |> Variable.declare_constraints t) end;
1171 fun add_cases is_proper = map_cases o fold (add_case is_proper);
1173 fun case_result c ctxt =
1175 val Rule_Cases.Case {fixes, ...} = c;
1176 val (ts, ctxt') = ctxt |> fold_map fix fixes;
1177 val Rule_Cases.Case {assumes, binds, cases, ...} = Rule_Cases.apply ts c;
1180 |> bind_terms (map drop_schematic binds)
1181 |> add_cases true (map (apsnd SOME) cases)
1182 |> pair (assumes, (binds, cases))
1185 val apply_case = apfst fst oo case_result;
1187 fun get_case ctxt name xs =
1188 (case AList.lookup (op =) (cases_of ctxt) name of
1189 NONE => error ("Unknown case: " ^ quote name)
1190 | SOME (c, _) => prep_case name xs c);
1196 (** print context information **)
1198 val debug = Unsynchronized.ref false;
1200 val verbose = Unsynchronized.ref false;
1201 fun verb f x = if ! verbose then f (x ()) else [];
1203 fun setmp_verbose_CRITICAL f x = setmp_CRITICAL verbose true f x;
1208 val print_syntax = Syntax.print_syntax o syn_of;
1213 fun pretty_abbrevs show_globals ctxt =
1215 val ((space, consts), (_, globals)) =
1216 pairself (#constants o Consts.dest) (#consts (rep_context ctxt));
1217 fun add_abbr (_, (_, NONE)) = I
1218 | add_abbr (c, (T, SOME t)) =
1219 if not show_globals andalso Symtab.defined globals c then I
1220 else cons (c, Logic.mk_equals (Const (c, T), t));
1221 val abbrevs = Name_Space.extern_table (space, Symtab.make (Symtab.fold add_abbr consts []));
1223 if null abbrevs andalso not (! verbose) then []
1224 else [Pretty.big_list "abbreviations:" (map (pretty_term_abbrev ctxt o #2) abbrevs)]
1227 val print_abbrevs = Pretty.writeln o Pretty.chunks o pretty_abbrevs true;
1232 fun pretty_binds ctxt =
1234 val binds = Variable.binds_of ctxt;
1235 fun prt_bind (xi, (T, t)) = pretty_term_abbrev ctxt (Logic.mk_equals (Var (xi, T), t));
1237 if Vartab.is_empty binds andalso not (! verbose) then []
1238 else [Pretty.big_list "term bindings:" (map prt_bind (Vartab.dest binds))]
1241 val print_binds = Pretty.writeln o Pretty.chunks o pretty_binds;
1244 (* local theorems *)
1246 fun pretty_lthms ctxt =
1248 val local_facts = facts_of ctxt;
1249 val props = Facts.props local_facts;
1251 (if null props then [] else [("unnamed", props)]) @
1252 Facts.dest_static [] local_facts;
1254 if null facts andalso not (! verbose) then []
1255 else [Pretty.big_list "facts:" (map #1 (sort_wrt (#1 o #2) (map (`(pretty_fact ctxt)) facts)))]
1258 val print_lthms = Pretty.writeln o Pretty.chunks o pretty_lthms;
1261 (* local contexts *)
1265 fun pretty_case (name, (fixes, ((asms, (lets, cs)), ctxt))) =
1267 val prt_term = Syntax.pretty_term ctxt;
1269 fun prt_let (xi, t) = Pretty.block
1270 [Pretty.quote (prt_term (Var (xi, Term.fastype_of t))), Pretty.str " =", Pretty.brk 1,
1271 Pretty.quote (prt_term t)];
1273 fun prt_asm (a, ts) = Pretty.block (Pretty.breaks
1274 ((if a = "" then [] else [Pretty.str (a ^ ":")]) @ map (Pretty.quote o prt_term) ts));
1276 fun prt_sect _ _ _ [] = []
1277 | prt_sect s sep prt xs = [Pretty.block (Pretty.breaks (Pretty.str s ::
1278 flat (Library.separate sep (map (Library.single o prt) xs))))];
1280 Pretty.block (Pretty.fbreaks
1281 (Pretty.str (name ^ ":") ::
1282 prt_sect "fix" [] (Pretty.str o fst) fixes @
1283 prt_sect "let" [Pretty.str "and"] prt_let
1284 (map_filter (fn (xi, SOME t) => SOME (xi, t) | _ => NONE) lets) @
1285 (if forall (null o #2) asms then []
1286 else prt_sect "assume" [Pretty.str "and"] prt_asm asms) @
1287 prt_sect "subcases:" [] (Pretty.str o fst) cs))
1292 fun pretty_cases ctxt =
1294 fun add_case (_, (_, false)) = I
1295 | add_case (name, (c as Rule_Cases.Case {fixes, ...}, true)) =
1296 cons (name, (fixes, case_result c ctxt));
1297 val cases = fold add_case (cases_of ctxt) [];
1299 if null cases andalso not (! verbose) then []
1300 else [Pretty.big_list "cases:" (map pretty_case cases)]
1303 val print_cases = Pretty.writeln o Pretty.chunks o pretty_cases;
1310 val prems_limit = Unsynchronized.ref ~1;
1312 fun pretty_ctxt ctxt =
1313 if ! prems_limit < 0 andalso not (! debug) then []
1316 val prt_term = Syntax.pretty_term ctxt;
1319 val structs = Local_Syntax.structs_of (syntax_of ctxt);
1320 val prt_structs = if null structs then []
1321 else [Pretty.block (Pretty.str "structures:" :: Pretty.brk 1 ::
1322 Pretty.commas (map Pretty.str structs))];
1325 fun prt_fix (x, x') =
1326 if x = x' then Pretty.str x
1327 else Pretty.block [Pretty.str x, Pretty.str " =", Pretty.brk 1, prt_term (Syntax.free x')];
1329 rev (filter_out ((can Name.dest_internal orf member (op =) structs) o #1)
1330 (Variable.fixes_of ctxt));
1331 val prt_fixes = if null fixes then []
1332 else [Pretty.block (Pretty.str "fixed variables:" :: Pretty.brk 1 ::
1333 Pretty.commas (map prt_fix fixes))];
1336 val prems = Assumption.all_prems_of ctxt;
1337 val len = length prems;
1338 val suppressed = len - ! prems_limit;
1339 val prt_prems = if null prems then []
1340 else [Pretty.big_list "prems:" ((if suppressed <= 0 then [] else [Pretty.str "..."]) @
1341 map (Display.pretty_thm ctxt) (Library.drop (suppressed, prems)))];
1342 in prt_structs @ prt_fixes @ prt_prems end;
1347 fun pretty_context ctxt =
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)))