Expression types cleaned up, proper treatment of term patterns.
1 (* Title: Pure/Isar/expression.ML
3 Author: Clemens Ballarin, TU Muenchen
5 New locale development --- experimental.
10 datatype 'term map = Positional of 'term option list | Named of (string * 'term) list;
11 type 'term expr = (string * (string * 'term map)) list;
12 type expression = string expr * (Name.binding * string option * mixfix) list;
13 type expression_i = term expr * (Name.binding * typ option * mixfix) list;
15 (* Processing of locale statements *)
16 val read_statement: Element.context list -> (string * string list) list list ->
17 Proof.context -> (term * term list) list list * Proof.context;
18 val cert_statement: Element.context_i list -> (term * term list) list list ->
19 Proof.context -> (term * term list) list list * Proof.context;
21 (* Declaring locales *)
22 val add_locale: string -> bstring -> expression -> Element.context list -> theory ->
23 string * Proof.context
24 val add_locale_i: string -> bstring -> expression_i -> Element.context_i list -> theory ->
25 string * Proof.context
27 (* Debugging and development *)
28 val parse_expression: OuterParse.token list -> expression * OuterParse.token list
32 structure Expression : EXPRESSION =
35 datatype ctxt = datatype Element.ctxt;
41 Positional of 'term option list |
42 Named of (string * 'term) list;
44 type 'term expr = (string * (string * 'term map)) list;
46 type expression = string expr * (Name.binding * string option * mixfix) list;
47 type expression_i = term expr * (Name.binding * typ option * mixfix) list;
50 (** Parsing and printing **)
54 structure P = OuterParse;
56 val loc_keyword = P.$$$ "fixes" || P.$$$ "constrains" || P.$$$ "assumes" ||
57 P.$$$ "defines" || P.$$$ "notes";
58 fun plus1_unless test scan =
59 scan ::: Scan.repeat (P.$$$ "+" |-- Scan.unless test (P.!!! scan));
61 val prefix = P.name --| P.$$$ ":";
62 val named = P.name -- (P.$$$ "=" |-- P.term);
63 val position = P.maybe P.term;
64 val instance = P.$$$ "where" |-- P.and_list1 named >> Named ||
65 Scan.repeat1 position >> Positional;
69 val parse_expression =
71 fun expr2 x = P.xname x;
72 fun expr1 x = (Scan.optional prefix "" -- expr2 --
73 Scan.optional instance (Named []) >> (fn ((p, l), i) => (l, (p, i)))) x;
74 fun expr0 x = (plus1_unless loc_keyword expr1) x;
75 in expr0 -- P.for_fixes end;
79 fun pretty_expr thy expr =
81 fun pretty_pos NONE = Pretty.str "_"
82 | pretty_pos (SOME x) = Pretty.str x;
83 fun pretty_named (x, y) = [Pretty.str x, Pretty.brk 1, Pretty.str "=",
84 Pretty.brk 1, Pretty.str y] |> Pretty.block;
85 fun pretty_ren (Positional ps) = take_suffix is_none ps |> snd |>
86 map pretty_pos |> Pretty.breaks
87 | pretty_ren (Named []) = []
88 | pretty_ren (Named ps) = Pretty.str "where" :: Pretty.brk 1 ::
89 (ps |> map pretty_named |> Pretty.separate "and");
90 fun pretty_rename (loc, ("", ren)) =
91 Pretty.block (Pretty.str (NewLocale.extern thy loc) :: Pretty.brk 1 :: pretty_ren ren)
92 | pretty_rename (loc, (prfx, ren)) =
93 Pretty.block (Pretty.str prfx :: Pretty.brk 1 :: Pretty.str (NewLocale.extern thy loc) ::
94 Pretty.brk 1 :: pretty_ren ren);
95 in Pretty.separate "+" (map pretty_rename expr) |> Pretty.block end;
97 fun err_in_expr thy msg expr =
100 if null expr then msg
101 else msg ^ "\n" ^ Pretty.string_of (Pretty.block
102 [Pretty.str "The above error(s) occurred in expression:", Pretty.brk 1,
103 pretty_expr thy expr])
104 in error err_msg end;
107 (** Internalise locale names in expr **)
109 fun intern thy instances = map (apfst (NewLocale.intern thy)) instances;
112 (** Parameters of expression.
113 Sanity check of instantiations.
114 Positional instantiations are extended to match full length of parameter list. **)
116 fun parameters_of thy (expr, fixed) =
118 fun reject_dups message xs =
119 let val dups = duplicates (op =) xs
121 if null dups then () else error (message ^ commas dups)
124 fun match_bind (n, b) = (n = Name.name_of b);
125 fun bind_eq (b1, b2) = (Name.name_of b1 = Name.name_of b2);
126 (* FIXME: cannot compare bindings for equality. *)
129 (NewLocale.params_of thy loc |> map (fn (p, _, mx) => (p, mx)), loc);
130 fun params_inst (expr as (loc, (prfx, Positional insts))) =
132 val (ps, loc') = params_loc loc;
133 val d = length ps - length insts;
135 if d < 0 then error ("More arguments than parameters in instantiation of locale " ^
136 quote (NewLocale.extern thy loc))
137 else insts @ replicate d NONE;
138 val ps' = (ps ~~ insts') |>
139 map_filter (fn (p, NONE) => SOME p | (_, SOME _) => NONE);
140 in (ps', (loc', (prfx, Positional insts'))) end
141 | params_inst (expr as (loc, (prfx, Named insts))) =
143 val _ = reject_dups "Duplicate instantiation of the following parameter(s): "
146 val (ps, loc') = params_loc loc;
147 val ps' = fold (fn (p, _) => fn ps =>
148 if AList.defined match_bind ps p then AList.delete match_bind p ps
149 else error (quote p ^" not a parameter of instantiated expression.")) insts ps;
150 in (ps', (loc', (prfx, Named insts))) end;
153 val (is', ps') = fold_map (fn i => fn ps =>
155 val (ps', i') = params_inst i;
156 val ps'' = AList.join bind_eq (fn p => fn (mx1, mx2) =>
157 (* FIXME: should check for bindings being the same.
158 Instead we check for equal name and syntax. *)
159 if mx1 = mx2 then mx1
160 else error ("Conflicting syntax for parameter" ^ quote (Name.display p) ^
161 " in expression.")) (ps, ps')
162 in (i', ps'') end) is []
165 val (parms, expr') = params_expr expr;
167 val parms' = map (#1 #> Name.name_of) parms;
168 val fixed' = map (#1 #> Name.name_of) fixed;
169 val _ = reject_dups "Duplicate fixed parameter(s): " fixed';
170 val _ = reject_dups "Parameter(s) declared simultaneously in expression and for clause: " (parms' @ fixed');
172 in (expr', (map (fn (b, mx) => (b, NONE, mx)) parms @ fixed)) end;
175 (** Read instantiation **)
177 (* Parse positional or named instantiation *)
181 fun prep_inst parse_term parms (Positional insts) ctxt =
182 (insts ~~ parms) |> map (fn
183 (NONE, p) => Syntax.parse_term ctxt p |
184 (SOME t, _) => parse_term ctxt t)
185 | prep_inst parse_term parms (Named insts) ctxt =
186 parms |> map (fn p => case AList.lookup (op =) insts p of
187 SOME t => parse_term ctxt t |
188 NONE => Syntax.parse_term ctxt p);
192 fun parse_inst x = prep_inst Syntax.parse_term x;
193 fun make_inst x = prep_inst (K I) x;
198 (* Instantiation morphism *)
200 fun inst_morph (parm_names, parm_types) (prfx, insts') ctxt =
203 val type_parm_names = fold Term.add_tfreesT parm_types [] |> map fst;
205 (* type inference and contexts *)
206 val parm_types' = map (TypeInfer.paramify_vars o Logic.varifyT) parm_types;
207 val type_parms = fold Term.add_tvarsT parm_types' [] |> map (Logic.mk_type o TVar);
208 val arg = type_parms @ map2 TypeInfer.constrain parm_types' insts';
209 val res = Syntax.check_terms ctxt arg;
210 val ctxt' = ctxt |> fold Variable.auto_fixes res;
213 val (type_parms'', res') = chop (length type_parms) res;
214 val insts'' = (parm_names ~~ res') |> map_filter
215 (fn (inst as (x, Free (y, _))) => if x = y then NONE else SOME inst |
217 val instT = Symtab.make (type_parm_names ~~ map Logic.dest_type type_parms'');
218 val inst = Symtab.make insts'';
220 (Element.inst_morphism (ProofContext.theory_of ctxt) (instT, inst) $>
221 Morphism.name_morphism (Name.qualified prfx), ctxt')
225 (*** Locale processing ***)
229 fun parse_elem prep_typ prep_term ctxt elem =
230 Element.map_ctxt {name = I, var = I, typ = prep_typ ctxt,
231 term = prep_term ctxt, fact = I, attrib = I} elem;
233 fun parse_concl prep_term ctxt concl =
234 (map o map) (fn (t, ps) =>
235 (prep_term ctxt, map (prep_term ctxt) ps)) concl;
238 (** Simultaneous type inference: instantiations + elements + conclusion **)
242 fun mk_type T = (Logic.mk_type T, []);
243 fun mk_term t = (t, []);
244 fun mk_propp (p, pats) = (Syntax.type_constraint propT p, pats);
246 fun dest_type (T, []) = Logic.dest_type T;
247 fun dest_term (t, []) = t;
248 fun dest_propp (p, pats) = (p, pats);
250 fun extract_inst (_, (_, ts)) = map mk_term ts;
251 fun restore_inst ((l, (p, _)), cs) = (l, (p, map dest_term cs));
253 fun extract_elem (Fixes fixes) = map (#2 #> the_list #> map mk_type) fixes
254 | extract_elem (Constrains csts) = map (#2 #> single #> map mk_type) csts
255 | extract_elem (Assumes asms) = map (#2 #> map mk_propp) asms
256 | extract_elem (Defines defs) = map (fn (_, (t, ps)) => [mk_propp (t, ps)]) defs
257 | extract_elem (Notes _) = [];
259 fun restore_elem (Fixes fixes, css) =
260 (fixes ~~ css) |> map (fn ((x, _, mx), cs) =>
261 (x, cs |> map dest_type |> try hd, mx)) |> Fixes
262 | restore_elem (Constrains csts, css) =
263 (csts ~~ css) |> map (fn ((x, _), cs) =>
264 (x, cs |> map dest_type |> hd)) |> Constrains
265 | restore_elem (Assumes asms, css) =
266 (asms ~~ css) |> map (fn ((b, _), cs) => (b, map dest_propp cs)) |> Assumes
267 | restore_elem (Defines defs, css) =
268 (defs ~~ css) |> map (fn ((b, _), [c]) => (b, dest_propp c)) |> Defines
269 | restore_elem (Notes notes, _) = Notes notes;
271 fun check cs context =
273 fun prep (_, pats) (ctxt, t :: ts) =
274 let val ctxt' = Variable.auto_fixes t ctxt
276 ((t, Syntax.check_props (ProofContext.set_mode ProofContext.mode_pattern ctxt') pats),
279 val (cs', (context', _)) = fold_map prep cs
280 (context, Syntax.check_terms
281 (ProofContext.set_mode ProofContext.mode_schematic context) (map fst cs));
282 in (cs', context') end;
286 fun check_autofix insts elems concl ctxt =
288 val inst_cs = map extract_inst insts;
289 val elem_css = map extract_elem elems;
290 val concl_cs = (map o map) mk_propp concl;
292 val (inst_cs' :: css', ctxt') =
293 (fold_burrow o fold_burrow) check (inst_cs :: elem_css @ [concl_cs]) ctxt;
294 (* Re-check to resolve bindings, elements and conclusion only *)
295 val (css'', _) = (fold_burrow o fold_burrow) check css' ctxt';
296 val (elem_css'', [concl_cs'']) = chop (length elem_css) css'';
298 (map restore_inst (insts ~~ inst_cs'), map restore_elem (elems ~~ elem_css''),
305 (** Prepare locale elements **)
307 fun declare_elem prep_vars (Fixes fixes) ctxt =
308 let val (vars, _) = prep_vars fixes ctxt
309 in ctxt |> ProofContext.add_fixes_i vars |> snd end
310 | declare_elem prep_vars (Constrains csts) ctxt =
311 ctxt |> prep_vars (map (fn (x, T) => (Name.binding x, SOME T, NoSyn)) csts) |> snd
312 | declare_elem _ (Assumes _) ctxt = ctxt
313 | declare_elem _ (Defines _) ctxt = ctxt
314 | declare_elem _ (Notes _) ctxt = ctxt;
316 (** Finish locale elements, extract specification text **)
318 val norm_term = Envir.beta_norm oo Term.subst_atomic;
320 fun abstract_thm thy eq =
321 Thm.assume (Thm.cterm_of thy eq) |> Drule.gen_all |> Drule.abs_def;
323 fun bind_def ctxt eq (xs, env, ths) =
325 val ((y, T), b) = LocalDefs.abs_def eq;
326 val b' = norm_term env b;
327 val th = abstract_thm (ProofContext.theory_of ctxt) eq;
328 fun err msg = error (msg ^ ": " ^ quote y);
330 exists (fn (x, _) => x = y) xs andalso
331 err "Attempt to define previously specified variable";
332 exists (fn (Free (y', _), _) => y = y' | _ => false) env andalso
333 err "Attempt to redefine variable";
334 (Term.add_frees b' xs, (Free (y, T), b') :: env, th :: ths)
337 fun eval_text _ _ (Fixes _) text = text
338 | eval_text _ _ (Constrains _) text = text
339 | eval_text _ is_ext (Assumes asms)
340 (((exts, exts'), (ints, ints')), (xs, env, defs)) =
342 val ts = maps (map #1 o #2) asms;
343 val ts' = map (norm_term env) ts;
345 if is_ext then ((exts @ ts, exts' @ ts'), (ints, ints'))
346 else ((exts, exts'), (ints @ ts, ints' @ ts'));
347 in (spec', (fold Term.add_frees ts' xs, env, defs)) end
348 | eval_text ctxt _ (Defines defs) (spec, binds) =
349 (spec, fold (bind_def ctxt o #1 o #2) defs binds)
350 | eval_text _ _ (Notes _) text = text;
352 fun closeup _ _ false elem = elem
353 | closeup ctxt parms true elem =
358 Term.fold_aterms (fn Free (x, T) =>
359 if AList.defined (op =) parms x then I else insert (op =) (x, T) | _ => I) t [];
360 in Term.list_all_free (rev rev_frees, t) end;
363 | no_binds _ = error "Illegal term bindings in context element";
366 Assumes asms => Assumes (asms |> map (fn (a, propps) =>
367 (a, map (fn (t, ps) => (close_frees t, no_binds ps)) propps)))
368 | Defines defs => Defines (defs |> map (fn (a, (t, ps)) =>
369 (a, (close_frees (#2 (LocalDefs.cert_def ctxt t)), no_binds ps))))
373 fun finish_primitive parms _ (Fixes fixes) = Fixes (map (fn (binding, _, mx) =>
374 let val x = Name.name_of binding
375 in (binding, AList.lookup (op =) parms x, mx) end) fixes)
376 | finish_primitive _ _ (Constrains _) = Constrains []
377 | finish_primitive _ close (Assumes asms) = close (Assumes asms)
378 | finish_primitive _ close (Defines defs) = close (Defines defs)
379 | finish_primitive _ _ (Notes facts) = Notes facts;
381 fun finish_inst ctxt parms do_close (loc, (prfx, inst)) text =
383 val thy = ProofContext.theory_of ctxt;
384 val (parm_names, parm_types) = NewLocale.params_of thy loc |>
385 map (fn (b, SOME T, _) => (Name.name_of b, T)) |> split_list;
386 val (asm, defs) = NewLocale.specification_of thy loc;
387 val (morph, _) = inst_morph (parm_names, parm_types) (prfx, inst) ctxt;
388 val asm' = Option.map (Morphism.term morph) asm;
389 val defs' = map (Morphism.term morph) defs;
392 then eval_text ctxt false (Assumes [(Attrib.no_binding, [(the asm', [])])])
395 then eval_text ctxt false (Defines (map (fn def => (Attrib.no_binding, (def, []))) defs'))
397 (* FIXME clone from new_locale.ML *)
398 in ((loc, morph), text') end;
400 fun finish_elem ctxt parms do_close elem text =
402 val elem' = finish_primitive parms (closeup ctxt parms do_close) elem;
403 val text' = eval_text ctxt true elem' text;
404 in (elem', text') end
406 fun finish ctxt parms do_close insts elems text =
408 val (deps, text') = fold_map (finish_inst ctxt parms do_close) insts text;
409 val (elems', text'') = fold_map (finish_elem ctxt parms do_close) elems text';
410 in (deps, elems', text'') end;
415 (* nice, but for now not needed
416 fun fold_suffixes f [] y = f [] y
417 | fold_suffixes f (x :: xs) y = f (x :: xs) (f xs y);
419 fun fold_prefixes f xs y = fold_suffixes (f o rev) (rev xs) y;
422 fun prep_elems parse_typ parse_prop parse_inst prep_vars
423 do_close context fixed raw_insts raw_elems raw_concl =
425 val thy = ProofContext.theory_of context;
427 fun prep_inst (loc, (prfx, inst)) (i, marked, insts, ctxt) =
429 val (parm_names, parm_types) = NewLocale.params_of thy loc |>
430 map (fn (b, SOME T, _) => (Name.name_of b, T)) |> split_list;
431 val inst' = parse_inst parm_names inst ctxt;
432 val parm_types' = map (TypeInfer.paramify_vars o
433 Term.map_type_tvar (fn ((x, _), S) => TVar ((x, i), S)) o Logic.varifyT) parm_types;
434 val inst'' = map2 TypeInfer.constrain parm_types' inst';
435 val insts' = insts @ [(loc, (prfx, inst''))];
436 val (insts'', _, _, ctxt') = check_autofix insts' [] [] ctxt;
437 val inst''' = insts'' |> List.last |> snd |> snd;
438 val (morph, _) = inst_morph (parm_names, parm_types) (prfx, inst''') ctxt;
439 val (marked', ctxt'') = NewLocale.activate_declarations thy (loc, morph) (marked, ctxt);
440 in (i+1, marked', insts', ctxt'') end;
442 fun prep_elem raw_elem (insts, elems, ctxt) =
444 val ctxt' = declare_elem prep_vars raw_elem ctxt;
445 val elems' = elems @ [parse_elem parse_typ parse_prop ctxt' raw_elem];
446 (* FIXME term bindings *)
447 val (_, _, _, ctxt'') = check_autofix insts elems' [] ctxt';
448 in (insts, elems', ctxt') end;
450 fun prep_concl raw_concl (insts, elems, ctxt) =
452 val concl = (map o map) (fn (t, ps) =>
453 (parse_prop ctxt t, map (parse_prop ctxt) ps)) raw_concl;
454 in check_autofix insts elems concl ctxt end;
456 val fors = prep_vars fixed context |> fst;
457 val ctxt = context |> ProofContext.add_fixes_i fors |> snd;
458 val (_, _, insts', ctxt') = fold prep_inst raw_insts (0, NewLocale.empty, [], ctxt);
459 val (_, elems'', ctxt'') = fold prep_elem raw_elems (insts', [], ctxt');
460 val (insts, elems, concl, ctxt) = prep_concl raw_concl (insts', elems'', ctxt'');
462 (* Retrieve parameter types *)
463 val xs = fold (fn Fixes fixes => (fn ps => ps @ map (Name.name_of o #1) fixes) |
464 _ => fn ps => ps) (Fixes fors :: elems) [];
465 val (Ts, ctxt') = fold_map ProofContext.inferred_param xs ctxt;
466 val parms = xs ~~ Ts;
468 val Fixes fors' = finish_primitive parms I (Fixes fors);
469 val (deps, elems', text) = finish ctxt' parms do_close insts elems ((([], []), ([], [])), ([], [], []));
470 (* text has the following structure:
471 (((exts, exts'), (ints, ints')), (xs, env, defs))
473 exts: external assumptions (terms in assumes elements)
474 exts': dito, normalised wrt. env
475 ints: internal assumptions (terms in assumptions from insts)
476 ints': dito, normalised wrt. env
477 xs: the free variables in exts' and ints' and rhss of definitions,
478 this includes parameters except defined parameters
479 env: list of term pairs encoding substitutions, where the first term
480 is a free variable; substitutions represent defines elements and
481 the rhs is normalised wrt. the previous env
482 defs: theorems representing the substitutions from defines elements
483 (thms are normalised wrt. env).
484 elems is an updated version of raw_elems:
485 - type info added to Fixes and modified in Constrains
486 - axiom and definition statement replaced by corresponding one
487 from proppss in Assumes and Defines
491 in ((parms, fors', deps, elems', concl), text) end
495 fun read_elems x = prep_elems Syntax.parse_typ Syntax.parse_prop parse_inst
496 ProofContext.read_vars x;
497 fun cert_elems x = prep_elems (K I) (K I) make_inst
498 ProofContext.cert_vars x;
503 (* full context statements: import + elements + conclusion *)
507 fun prep_context_statement prep_expr prep_elems activate_elems
508 do_close imprt elements raw_concl context =
510 val thy = ProofContext.theory_of context;
512 val (expr, fixed) = parameters_of thy (apfst (prep_expr thy) imprt);
513 val ((parms, fors, deps, elems, concl), (spec, (_, _, defs))) =
514 prep_elems do_close context fixed expr elements raw_concl;
516 val (_, ctxt0) = ProofContext.add_fixes_i fors context;
517 val (_, ctxt) = fold (NewLocale.activate_facts thy) deps (NewLocale.empty, ctxt0);
518 val ((elems', _), ctxt') = activate_elems elems (ProofContext.set_stmt true ctxt);
520 (((fors, deps), (ctxt', elems'), (parms, spec, defs)), concl)
523 fun prep_statement prep_ctxt elems concl ctxt =
525 val (((_, (ctxt', _), _)), concl) = prep_ctxt false ([], []) elems concl ctxt
526 in (concl, ctxt') end;
530 fun read_statement body concl ctxt =
531 prep_statement (prep_context_statement intern read_elems Element.activate) body concl ctxt;
532 fun cert_statement body concl ctxt =
533 prep_statement (prep_context_statement (K I) cert_elems Element.activate_i) body concl ctxt;
535 fun read_context imprt body ctxt =
536 #1 (prep_context_statement intern read_elems Element.activate true imprt body [] ctxt);
537 fun cert_context imprt body ctxt =
538 #1 (prep_context_statement (K I) cert_elems Element.activate_i true imprt body [] ctxt);
547 (*** Locale declarations ***)
551 (* introN: name of theorems for introduction rules of locale and
553 axiomsN: name of theorem set with destruct rules for locale predicates,
554 also name suffix of delta predicates. *)
556 val introN = "intro";
557 val axiomsN = "axioms";
559 fun atomize_spec thy ts =
561 val t = Logic.mk_conjunction_balanced ts;
562 val body = ObjectLogic.atomize_term thy t;
563 val bodyT = Term.fastype_of body;
565 if bodyT = propT then (t, propT, Thm.reflexive (Thm.cterm_of thy t))
566 else (body, bodyT, ObjectLogic.atomize (Thm.cterm_of thy t))
569 (* achieve plain syntax for locale predicates (without "PROP") *)
571 fun aprop_tr' n c = (Syntax.constN ^ c, fn ctxt => fn args =>
572 if length args = n then
573 Syntax.const "_aprop" $
574 Term.list_comb (Syntax.free (Consts.extern (ProofContext.consts_of ctxt) c), args)
577 (* CB: define one predicate including its intro rule and axioms
578 - bname: predicate name
579 - parms: locale parameters
580 - defs: thms representing substitutions from defines elements
581 - ts: terms representing locale assumptions (not normalised wrt. defs)
582 - norm_ts: terms representing locale assumptions (normalised wrt. defs)
586 fun def_pred bname parms defs ts norm_ts thy =
588 val name = Sign.full_name thy bname;
590 val (body, bodyT, body_eq) = atomize_spec thy norm_ts;
591 val env = Term.add_term_free_names (body, []);
592 val xs = filter (member (op =) env o #1) parms;
594 val extraTs = (Term.term_tfrees body \\ fold Term.add_tfreesT Ts [])
595 |> Library.sort_wrt #1 |> map TFree;
596 val predT = map Term.itselfT extraTs ---> Ts ---> bodyT;
598 val args = map Logic.mk_type extraTs @ map Free xs;
599 val head = Term.list_comb (Const (name, predT), args);
600 val statement = ObjectLogic.ensure_propT thy head;
602 val ([pred_def], defs_thy) =
604 |> bodyT = propT ? Sign.add_advanced_trfuns ([], [], [aprop_tr' (length args) name], [])
605 |> Sign.declare_const [] ((Name.binding bname, predT), NoSyn) |> snd
606 |> PureThy.add_defs false
607 [((Thm.def_name bname, Logic.mk_equals (head, body)), [Thm.kind_internal])];
608 val defs_ctxt = ProofContext.init defs_thy |> Variable.declare_term head;
610 val cert = Thm.cterm_of defs_thy;
612 val intro = Goal.prove_global defs_thy [] norm_ts statement (fn _ =>
613 MetaSimplifier.rewrite_goals_tac [pred_def] THEN
614 Tactic.compose_tac (false, body_eq RS Drule.equal_elim_rule1, 1) 1 THEN
615 Tactic.compose_tac (false,
616 Conjunction.intr_balanced (map (Thm.assume o cert) norm_ts), 0) 1);
619 (Drule.equal_elim_rule2 OF [body_eq,
620 MetaSimplifier.rewrite_rule [pred_def] (Thm.assume (cert statement))])
621 |> Conjunction.elim_balanced (length ts);
622 val axioms = ts ~~ conjuncts |> map (fn (t, ax) =>
623 Element.prove_witness defs_ctxt t
624 (MetaSimplifier.rewrite_goals_tac defs THEN
625 Tactic.compose_tac (false, ax, 0) 1));
626 in ((statement, intro, axioms), defs_thy) end;
630 (* CB: main predicate definition function *)
632 fun define_preds pname (parms, ((exts, exts'), (ints, ints')), defs) thy =
634 val (a_pred, a_intro, a_axioms, thy'') =
635 if null exts then (NONE, NONE, [], thy)
638 val aname = if null ints then pname else pname ^ "_" ^ axiomsN;
639 val ((statement, intro, axioms), thy') =
641 |> def_pred aname parms defs exts exts';
644 |> Sign.add_path aname
645 |> Sign.no_base_names
646 |> PureThy.note_thmss Thm.internalK [((Name.binding introN, []), [([intro], [])])]
647 ||> Sign.restore_naming thy';
648 in (SOME statement, SOME intro, axioms, thy'') end;
649 val (b_pred, b_intro, b_axioms, thy'''') =
650 if null ints then (NONE, NONE, [], thy'')
653 val ((statement, intro, axioms), thy''') =
655 |> def_pred pname parms defs (ints @ the_list a_pred) (ints' @ the_list a_pred);
658 |> Sign.add_path pname
659 |> Sign.no_base_names
660 |> PureThy.note_thmss Thm.internalK
661 [((Name.binding introN, []), [([intro], [])]),
662 ((Name.binding axiomsN, []),
663 [(map (Drule.standard o Element.conclude_witness) axioms, [])])]
664 ||> Sign.restore_naming thy''';
665 in (SOME statement, SOME intro, axioms, thy'''') end;
666 in ((a_pred, a_intro, a_axioms), (b_pred, b_intro, b_axioms), thy'''') end;
673 fun assumes_to_notes (Assumes asms) axms =
674 fold_map (fn (a, spec) => fn axs =>
675 let val (ps, qs) = chop (length spec) axs
676 in ((a, [(ps, [])]), qs) end) asms axms
677 |> apfst (curry Notes Thm.assumptionK)
678 | assumes_to_notes e axms = (e, axms);
680 fun defines_to_notes thy (Defines defs) defns =
682 val defs' = map (fn (_, (def, _)) => def) defs
683 val notes = map (fn (a, (def, _)) =>
684 (a, [([assume (cterm_of thy def)], [])])) defs
686 (Notes (Thm.definitionK, notes), defns @ defs')
688 | defines_to_notes _ e defns = (e, defns);
690 fun gen_add_locale prep_context
691 bname predicate_name raw_imprt raw_body thy =
693 val thy_ctxt = ProofContext.init thy;
694 val name = Sign.full_name thy bname;
695 val _ = NewLocale.test_locale thy name andalso
696 error ("Duplicate definition of locale " ^ quote name);
698 val ((fors, deps), (_, body_elems), text as (parms, ((_, exts'), _), defs)) =
699 prep_context raw_imprt raw_body thy_ctxt;
700 val ((a_statement, a_intro, a_axioms), (b_statement, b_intro, b_axioms), thy') =
701 define_preds predicate_name text thy;
703 val extraTs = fold Term.add_tfrees exts' [] \\ fold Term.add_tfreesT (map snd parms) [];
704 val _ = if null extraTs then ()
705 else warning ("Additional type variable(s) in locale specification " ^ quote bname);
707 val satisfy = Element.satisfy_morphism b_axioms;
709 (body_elems |> map_filter (fn Fixes fixes => SOME fixes | _ => NONE) |> flat);
710 val (body_elems', defns) = fold_map (defines_to_notes thy) body_elems [];
712 val notes = body_elems' |>
713 (fn elems => fold_map assumes_to_notes elems (map Element.conclude_witness a_axioms)) |>
714 fst |> map (Element.morph_ctxt satisfy) |>
715 map_filter (fn Notes notes => SOME notes | _ => NONE);
717 val deps' = map (fn (l, morph) => (l, morph $> satisfy)) deps;
719 val loc_ctxt = thy' |>
720 NewLocale.register_locale name (extraTs, params)
721 (if is_some b_statement then b_statement else a_statement, map prop_of defs) ([], [])
722 (map (fn n => (n, stamp ())) notes |> rev) (map (fn d => (d, stamp ())) deps' |> rev) |>
724 in (name, loc_ctxt) end;
728 val add_locale = gen_add_locale read_context;
729 val add_locale_i = gen_add_locale cert_context;