1 (* Title: interpreter for scripts
2 Author: Walther Neuper 2000
3 (c) due to copyright terms
4 12345678901234567890123456789012345678901234567890123456789012345678901234567890
5 10 20 30 40 50 60 70 80
8 signature INTERPRETER =
10 (*type ets (list of executed tactics) see sequent.sml*)
14 | Steps of (tac_ * mout * ptree * pos' * cid * safe (* ets*)) list
15 (* | ToDo of ets 28.4.02*)
17 (*diss: next-tactic-function*)
18 val next_tac : theory' -> ptree * pos' -> metID -> scr -> ets -> tac_
19 (*diss: locate-function*)
20 val locate_gen : theory'
22 -> ptree * pos' -> scr * rls -> ets -> loc_ -> locate
24 val sel_rules : ptree -> pos' -> tac list
25 val init_form : scr -> ets -> loc_ * term option (*FIXME not up to date*)
26 val formal_args : term -> term list
28 (*shift to library ...*)
29 val inst_abs : theory' -> term -> term
30 val itms2args : metID -> itm list -> term list
31 val user_interrupt : loc_ * (tac_ * env * env * term * term * safe)
39 structure Interpreter : INTERPRETER =
43 (*.traces the leaves (ie. non-tactical nodes) of the script
45 a leaf is either a tactic or an 'exp' in 'let v = expr'
46 where 'exp' does not contain a tactic.*)
47 val trace_script = Unsynchronized.ref false;
49 type step = (*data for creating a new node in the ptree;
51 fun ass* scrstate steps =
52 ... case ass* scrstate steps of
53 Assoc (scrstate, steps) => ... ass* scrstate steps*)
54 tac_ (*transformed from associated tac*)
55 * mout (*result with indentation etc.*)
56 * ptree (*containing node created by tac_ + resp. scrstate*)
57 * pos' (*position in ptree; ptree * pos' is the proofstate*)
58 * pos' list; (*of ptree-nodes probably cut (by fst tac_)*)
59 val e_step = (Empty_Tac_, EmptyMout, EmptyPtree, e_pos',[]:pos' list):step;
61 fun rule2thm' (Thm (id, thm)) = (id, string_of_thmI thm):thm'
62 | rule2thm' r = error ("rule2thm': not defined for "^(rule2str r));
63 fun rule2rls' (Rls_ rls) = id_rls rls
64 | rule2rls' r = error ("rule2rls': not defined for "^(rule2str r));
66 (*.makes a (rule,term) list to a Step (m, mout, pt', p', cid) for solve;
67 complicated with current t in rrlsstate.*)
68 fun rts2steps steps ((pt,p),(f,f'',rss,rts),(thy',ro,er,pa)) [(r, (f', am))] =
70 val thy = assoc_thy thy'
71 val ctxt = get_ctxt pt p |> insert_assumptions am
72 val m = Rewrite' (thy', ro, er, pa, rule2thm' r, f, (f', am))
73 val is = RrlsState (f', f'', rss, rts)
74 val p = case p of (p',Frm) => p | (p',Res) => (lev_on p',Res)
75 val (p', cid, mout, pt') = generate1 thy m (is, ctxt) p pt
76 in (is, (m, mout, pt', p', cid) :: steps) end
77 | rts2steps steps ((pt,p),(f,f'',rss,rts),(thy',ro,er,pa)) ((r, (f', am))::rts') =
79 val thy = assoc_thy thy'
80 val ctxt = get_ctxt pt p |> insert_assumptions am
81 val m = Rewrite' (thy',ro,er,pa, rule2thm' r, f, (f', am))
82 val is = RrlsState (f',f'',rss,rts)
83 val p = case p of (p',Frm) => p | (p',Res) => (lev_on p',Res)
84 val (p', cid, mout, pt') = generate1 thy m (is, ctxt) p pt
85 in rts2steps ((m, mout, pt', p', cid)::steps)
86 ((pt',p'),(f',f'',rss,rts),(thy',ro,er,pa)) rts' end;
88 (*. functions for the environment stack .*)
89 fun accessenv id es = the (assoc((top es):env, id))
90 handle _ => error ("accessenv: "^(free2str id)^" not in env");
91 fun updateenv id vl (es:env stack) =
92 (push (overwrite(top es, (id, vl))) (pop es)):env stack;
93 fun pushenv id vl (es:env stack) =
94 (push (overwrite(top es, (id, vl))) es):env stack;
95 val popenv = pop:env stack -> env stack;
99 fun de_esc_underscore str =
101 | scan (s::ss) = if s = "'" then (scan ss)
103 in (implode o scan o Symbol.explode) str end;
105 > val str = "Rewrite_Set_Inst";
106 > val esc = esc_underscore str;
107 val it = "Rewrite'_Set'_Inst" : string
108 > val des = de_esc_underscore esc;
109 val des = de_esc_underscore esc;*)
111 (*go at a location in a script and fetch the contents*)
113 | go (D::p) (Abs(s,ty,t0)) = go (p:loc_) t0
114 | go (L::p) (t1 $ t2) = go p t1
115 | go (R::p) (t1 $ t2) = go p t2
116 | go l _ = error ("go: no "^(loc_2str l));
118 > val t = (Thm.term_of o the o (parse thy)) "a+b";
119 val it = Const (#,#) $ Free (#,#) $ Free ("b","RealDef.real") : term
120 > val plus_a = go [L] t;
122 > val plus = go [L,L] t;
123 > val a = go [L,R] t;
125 > val t = (Thm.term_of o the o (parse thy)) "a+b+c";
126 val t = Const (#,#) $ (# $ # $ Free #) $ Free ("c","RealDef.real") : term
127 > val pl_pl_a_b = go [L] t;
129 > val a = go [L,R,L,R] t;
130 > val b = go [L,R,R] t;
134 (* get a subterm t with test t, and record location *)
135 fun get l test (t as Const (s,T)) =
136 if test t then SOME (l,t) else NONE
137 | get l test (t as Free (s,T)) =
138 if test t then SOME (l,t) else NONE
139 | get l test (t as Bound n) =
140 if test t then SOME (l,t) else NONE
141 | get l test (t as Var (s,T)) =
142 if test t then SOME (l,t) else NONE
143 | get l test (t as Abs (s,T,body)) =
144 if test t then SOME (l:loc_,t) else get ((l@[D]):loc_) test body
145 | get l test (t as t1 $ t2) =
146 if test t then SOME (l,t)
147 else case get (l@[L]) test t1 of
148 NONE => get (l@[R]) test t2
149 | SOME (l',t') => SOME (l',t');
151 > val sss = ((Thm.term_of o the o (parse thy))
152 "Script Solve_root_equation (eq_::bool) (v_::real) (err_::bool) =\
153 \ (let e_ = Try (Rewrite square_equation_left True eq_) \
155 ______ compares head_of !!
156 > get [] (eq_str "HOL.Let") sss; [R]
157 > get [] (eq_str "Script.Try") sss; [R,L,R]
158 > get [] (eq_str "Script.Rewrite") sss; [R,L,R,R]
159 > get [] (eq_str "HOL.True") sss; [R,L,R,R,L,R]
160 > get [] (eq_str "e_") sss; [R,R]
163 (*.get argument of first stactic in a script for init_form.*)
164 fun get_stac thy (h $ body) =
166 fun get_t y (Const ("Script.Seq",_) $ e1 $ e2) a =
167 (case get_t y e1 a of NONE => get_t y e2 a | la => la)
168 | get_t y (Const ("Script.Seq",_) $ e1 $ e2 $ a) _ =
169 (case get_t y e1 a of NONE => get_t y e2 a | la => la)
170 | get_t y (Const ("Script.Try",_) $ e) a = get_t y e a
171 | get_t y (Const ("Script.Try",_) $ e $ a) _ = get_t y e a
172 | get_t y (Const ("Script.Repeat",_) $ e) a = get_t y e a
173 | get_t y (Const ("Script.Repeat",_) $ e $ a) _ = get_t y e a
174 | get_t y (Const ("Script.Or",_) $e1 $ e2) a =
175 (case get_t y e1 a of NONE => get_t y e2 a | la => la)
176 | get_t y (Const ("Script.Or",_) $e1 $ e2 $ a) _ =
177 (case get_t y e1 a of NONE => get_t y e2 a | la => la)
178 | get_t y (Const ("Script.While",_) $ c $ e) a = get_t y e a
179 | get_t y (Const ("Script.While",_) $ c $ e $ a) _ = get_t y e a
180 | get_t y (Const ("Script.Letpar",_) $ e1 $ Abs (_,_,e2)) a =
181 (case get_t y e1 a of NONE => get_t y e2 a | la => la)
182 (*| get_t y (Const ("HOL.Let",_) $ e1 $ Abs (_,_,e2)) a =
183 (case get_t y e1 a of NONE => get_t y e2 a | la => la)
184 | get_t y (Abs (_,_,e)) a = get_t y e a*)
185 | get_t y (Const ("HOL.Let",_) $ e1 $ Abs (_,_,e2)) a =
186 get_t y e1 a (*don't go deeper without evaluation !*)
187 | get_t y (Const ("If",_) $ c $ e1 $ e2) a = NONE
188 (*(case get_t y e1 a of NONE => get_t y e2 a | la => la)*)
190 | get_t y (Const ("Script.Rewrite",_) $ _ $ _ $ a) _ = SOME a
191 | get_t y (Const ("Script.Rewrite",_) $ _ $ _ ) a = SOME a
192 | get_t y (Const ("Script.Rewrite'_Inst",_) $ _ $ _ $ _ $ a) _ = SOME a
193 | get_t y (Const ("Script.Rewrite'_Inst",_) $ _ $ _ $ _ ) a = SOME a
194 | get_t y (Const ("Script.Rewrite'_Set",_) $ _ $ _ $ a) _ = SOME a
195 | get_t y (Const ("Script.Rewrite'_Set",_) $ _ $ _ ) a = SOME a
196 | get_t y (Const ("Script.Rewrite'_Set'_Inst",_) $ _ $ _ $ _ $a)_ =SOME a
197 | get_t y (Const ("Script.Rewrite'_Set'_Inst",_) $ _ $ _ $ _ ) a =SOME a
198 | get_t y (Const ("Script.Calculate",_) $ _ $ a) _ = SOME a
199 | get_t y (Const ("Script.Calculate",_) $ _ ) a = SOME a
201 | get_t y (Const ("Script.Substitute",_) $ _ $ a) _ = SOME a
202 | get_t y (Const ("Script.Substitute",_) $ _ ) a = SOME a
204 | get_t y (Const ("Script.SubProblem",_) $ _ $ _) _ = NONE
207 ((*tracing ("### get_t yac: list-expr "^(term2str x));*)
209 in get_t thy body e_term end;
211 fun init_form thy (Prog sc) env =
212 (case get_stac thy sc of
214 | SOME stac => SOME (subst_atomic env stac))
215 | init_form _ _ _ = error "init_form: no match";
217 (*the 'iteration-argument' of a stac (args not eval)*)
218 fun itr_arg _ (Const ("Script.Rewrite'_Inst",_) $ _ $ _ $ _ $ v) = v
219 | itr_arg _ (Const ("Script.Rewrite",_) $ _ $ _ $ v) = v
220 | itr_arg _ (Const ("Script.Rewrite'_Set'_Inst",_) $ _ $ _ $ _ $ v) = v
221 | itr_arg _ (Const ("Script.Rewrite'_Set",_) $ _ $ _ $ v) = v
222 | itr_arg _ (Const ("Script.Calculate",_) $ _ $ v) = v
223 | itr_arg _ (Const ("Script.Check'_elementwise",_) $ consts $ _) = consts
224 | itr_arg _ (Const ("Script.Or'_to'_List",_) $ _) = e_term
225 | itr_arg _ (Const ("Script.Tac",_) $ _) = e_term
226 | itr_arg _ (Const ("Script.SubProblem",_) $ _ $ _) = e_term
227 | itr_arg thy t = error ("itr_arg not impl. for " ^ term_to_string'' thy t);
228 (* val t = (Thm.term_of o the o (parse thy))"Rewrite rroot_square_inv False e_";
229 > itr_arg "Script" t;
230 val it = Free ("e_","RealDef.real") : term
231 > val t = (Thm.term_of o the o (parse thy))"xxx";
232 > itr_arg "Script" t;
233 *** itr_arg not impl. for xxx
234 uncaught exception ERROR
235 raised at: library.ML:1114.35-1114.40*)
238 (*.get the arguments of the script out of the scripts parsetree.*)
239 fun formal_args scr = (fst o split_last o snd o strip_comb) scr;
242 [Free ("f_","RealDef.real"),Free ("v_","RealDef.real"),
243 Free ("eqs_","bool List.list")] : term list
246 (*.get the identifier of the script out of the scripts parsetree.*)
247 fun id_of_scr sc = (id_of o fst o strip_comb) sc;
249 (*WN020526: not clear, when a is available in ass_up for eva-_true*)
250 (*WN060906: in "fun handle_leaf" eg. uses "SOME M__"(from some PREVIOUS
251 curried Rewrite) for CURRENT value (which may be different from PREVIOUS);
252 thus "NONE" must be set at the end of currying (ill designed anyway)*)
253 fun upd_env_opt env (SOME a, v) = upd_env env (a,v)
254 | upd_env_opt env (NONE, v) =
255 (tracing ("*** upd_env_opt: (NONE," ^ term2str v ^ ")"); env);
257 type dsc = typ; (*<-> nam..unknow in Descript.thy*)
258 fun typ_str (Type (s,_)) = s
259 | typ_str (TFree(s,_)) = s
260 | typ_str (TVar ((s,i),_)) = s ^ (string_of_int i);
262 (*get the _result_-type of a description*)
263 fun dsc_valT (Const (_,(Type (_,[_,T])))) = (strip_thy o typ_str) T;
264 (*> val t = (Thm.term_of o the o (parse thy)) "equality";
266 val T = "bool => Tools.una" : typ
267 > val dsc = dsc_valT t;
268 val dsc = "una" : string
270 > val t = (Thm.term_of o the o (parse thy)) "fixedValues";
272 val T = "bool List.list => Tools.nam" : typ
273 > val dsc = dsc_valT t;
274 val dsc = "nam" : string*)
276 (*.from penv in itm_ make args for script depending on type of description.*)
277 (*6.5.03 TODO: push penv into script -- and drop mk_arg here || drop penv
278 9.5.03 penv postponed: penv = env for script at the moment, (*mk_arg*)*)
279 fun mk_arg thy d [] =
280 error ("mk_arg: no data for " ^ term_to_string''' thy d)
286 r as (Const ("HOL.eq",_) $ _ $ _) => r
287 | _ => error ("mk_arg: dsc-typ 'nam' applied to non-equality " ^ term_to_string''' thy t)]
288 | s => error ("mk_arg: not impl. for "^s))
289 | mk_arg thy d (t::ts) = (mk_arg thy d [t]) @ (mk_arg thy d ts);
292 val [t] = ts_in itm_;
299 (*.create the actual parameters (args) of script: their order
300 is given by the order in met.pat .*)
301 (*WN.5.5.03: ?: does this allow for different descriptions ???
302 ?: why not taken from formal args of script ???
303 !: FIXXXME penv: push it here in itms2args into script-evaluation*)
304 (* val (thy, mI, itms) = (thy, metID, itms);
307 "ERROR: the guard is missing (#ppc in 'type met' added in prep_met)."
308 fun itms2args thy mI (itms:itm list) =
309 let val mvat = max_vt itms
310 fun okv mvat (_,vats,b,_,_) = member op = vats mvat andalso b
311 val itms = filter (okv mvat) itms
312 fun test_dsc d (_,_,_,_,itm_) = (d = d_in itm_)
313 fun itm2arg itms (_,(d,_)) =
314 case find_first (test_dsc d) itms of
316 error ("itms2args: '"^term2str d^"' not in itms")
317 (*| SOME (_,_,_,_,itm_) => mk_arg thy (d_in itm_) (ts_in itm_);
318 penv postponed; presently penv holds already env for script*)
319 | SOME (_,_,_,_,itm_) => penvval_in itm_
320 fun sel_given_find (s,_) = (s = "#Given") orelse (s = "#Find")
321 val pats = (#ppc o get_met) mI
322 val _ = if pats = [] then raise ERROR errmsg else ()
323 in (flat o (map (itm2arg itms))) pats end;
325 > val sc = ... Solve_root_equation ...
326 > val mI = ("Script","sqrt-equ-test");
327 > val PblObj{meth={ppc=itms,...},...} = get_obj I pt [];
328 > val ts = itms2args thy mI itms;
329 > map (term_to_string''' thy) ts;
330 ["sqrt (#9 + #4 * x) = sqrt x + sqrt (#5 + x)","x","#0"] : string list
334 (*detour necessary, because generate1 delivers a string-result*)
335 fun mout2term thy (Form' (FormKF (_,_,_,_,res))) =
336 (Thm.term_of o the o (parse (assoc_thy thy))) res
337 | mout2term thy (Form' (PpcKF _)) = e_term;(*3.8.01: res of subpbl
338 at time of detection in script*)
340 (*.convert a script-tac 'stac' to a tactic 'tac'; if stac is an initac,
341 then convert to a 'tac_' (as required in appy).
342 arg pt:ptree for pushing the thy specified in rootpbl into subpbls.*)
343 fun stac2tac_ pt thy (Const ("Script.Rewrite",_) $ Free (thmID,_) $ _ $ f) =
345 val tid = (de_esc_underscore o strip_thy) thmID
346 in (Rewrite (tid, (Thm.prop_of o (assoc_thm'' thy)) (tid, e_term)), Empty_Tac_)
349 | stac2tac_ pt thy (Const ("Script.Rewrite'_Inst",_) $ sub $ Free (thmID,_) $ _ $ f) =
351 val subML = ((map isapair2pair) o isalist2list) sub
352 val subStr = subst2subs subML
353 val tid = (de_esc_underscore o strip_thy) thmID (*4.10.02 unnoetig*)
354 in (Rewrite_Inst (subStr, (tid, (Thm.prop_of o (assoc_thm'' thy)) (tid, e_term))), Empty_Tac_)
357 | stac2tac_ pt thy (Const ("Script.Rewrite'_Set",_) $ Free (rls,_) $ _ $ f) =
358 (Rewrite_Set ((de_esc_underscore o strip_thy) rls), Empty_Tac_)
360 | stac2tac_ pt thy (Const ("Script.Rewrite'_Set'_Inst",_) $ sub $ Free (rls,_) $ _ $ f) =
362 val subML = ((map isapair2pair) o isalist2list) sub;
363 val subStr = subst2subs subML;
364 in (Rewrite_Set_Inst (subStr,rls), Empty_Tac_) end
366 | stac2tac_ pt thy (Const ("Script.Calculate",_) $ Free (op_,_) $ f) =
367 (Calculate op_, Empty_Tac_)
369 | stac2tac_ pt thy (Const ("Script.Take",_) $ t) =
370 (Take (term2str t), Empty_Tac_)
372 | stac2tac_ pt thy (Const ("Script.Substitute",_) $ isasub $ arg) =
373 (Substitute ((subte2sube o isalist2list) isasub), Empty_Tac_)
375 | stac2tac_ pt thy (Const("Script.Check'_elementwise",_) $ _ $
376 (set as Const ("Set.Collect",_) $ Abs (_,_,pred))) =
377 (Check_elementwise (term_to_string''' thy pred), (*set*)Empty_Tac_)
379 | stac2tac_ pt thy (Const("Script.Or'_to'_List",_) $ _ ) =
380 (Or_to_List, Empty_Tac_)
382 (*12.1.01.for subproblem_equation_dummy in root-equation *)
383 | stac2tac_ pt thy (Const ("Script.Tac",_) $ Free (str,_)) =
384 (Tac ((de_esc_underscore o strip_thy) str), Empty_Tac_)
386 (*compare "| assod _ (Subproblem'"*)
387 | stac2tac_ pt thy (stac as Const ("Script.SubProblem",_) $
388 (Const ("Product_Type.Pair",_) $Free (dI',_) $
389 (Const ("Product_Type.Pair",_) $ pI' $ mI')) $ ags') =
391 val dI = ((implode o drop_last(*.."'"*) o Symbol.explode) dI')(*^""*);
392 val thy = maxthy (assoc_thy dI) (rootthy pt);
393 val pI = ((map (de_esc_underscore o free2str)) o isalist2list) pI';
394 val mI = ((map (de_esc_underscore o free2str)) o isalist2list) mI';
395 val ags = isalist2list ags';
400 val pors = (match_ags thy ((#ppc o get_pbt) pI) ags)
401 handle ERROR "actual args do not match formal args"
402 => (match_ags_msg pI stac ags(*raise exn*); [])
403 val pI' = refine_ori' pors pI;
404 in (pI', pors (*refinement over models with diff.prec only*),
405 (hd o #met o get_pbt) pI') end
406 else (pI, (match_ags thy ((#ppc o get_pbt) pI) ags)
407 handle ERROR "actual args do not match formal args"
408 => (match_ags_msg pI stac ags(*raise exn*); []), mI);
409 val (fmz_, vals) = oris2fmz_vals pors;
410 val {cas,ppc,thy,...} = get_pbt pI
411 val dI = theory2theory' thy (*.take dI from _refined_ pbl.*)
412 val dI = theory2theory' (maxthy (assoc_thy dI) (rootthy pt));
413 val ctxt = Proof_Context.init_global
414 val ctxt = dI |> Thy_Info.get_theory |> Proof_Context.init_global
415 |> declare_constraints' vals
418 NONE => pblterm dI pI
419 | SOME t => subst_atomic ((vars_of_pbl_' ppc) ~~~ vals) t
420 val f = subpbl (strip_thy dI) pI
421 in (Subproblem (dI, pI), Subproblem' ((dI, pI, mI), pors, hdl, fmz_, ctxt, f))
423 | stac2tac_ pt thy t = error
424 ("stac2tac_ TODO: no match for " ^ term_to_string''' thy t);
426 fun stac2tac pt thy t = (fst o stac2tac_ pt thy) t;
428 (*test a term for being a _list_ (set ?) of constants; could be more rigorous*)
429 fun list_of_consts (Const ("List.list.Cons",_) $ _ $ _) = true
430 | list_of_consts (Const ("List.list.Nil",_)) = true
431 | list_of_consts _ = false;
432 (*val ttt = (Thm.term_of o the o (parse thy)) "[x=#1,x=#2,x=#3]";
433 > list_of_consts ttt;
435 > val ttt = (Thm.term_of o the o (parse thy)) "[]";
436 > list_of_consts ttt;
437 val it = true : bool*)
443 tac_ * (* SubProblem gets args instantiated in assod *)
444 term (* for itr_arg, result in ets *)
447 term (*for itr_arg,result in ets*)
450 (* check if tac_ is associated with stac.
451 Additional task: check if term t (the result has been calculated from) in tac_
452 has been changed (see "datatype tac_"); if yes, recalculate result
453 TODO.WN120106 recalculate impl.only for Substitute'
455 pt : ptree for pushing the thy specified in rootpbl into subpbls
456 d : unused (planned for data for comparison)
457 tac_ : from user (via applicable_in); to be compared with ...
458 stac : found in Script
460 Ass : associated: e.g. thmID in stac = thmID in m
461 +++ arg in stac = arg in m
462 AssWeak: weakly ass.:e.g. thmID in stac = thmID in m, //arg//
463 NotAss : e.g. thmID in stac/=/thmID in m (not =)
465 fun assod pt d (m as Rewrite_Inst' (thy', rod, rls, put, subs, (thmID, _), f, (f', asm))) stac =
467 (Const ("Script.Rewrite'_Inst",_) $ subs_ $ Free (thmID_,idT) $b$f_) =>
471 then ((*tracing"3### assod ..Ass";*)Ass (m,f'))
472 else ((*tracing"3### assod ..AssWeak";*)AssWeak(m, f'))
473 else ((*tracing"3### assod ..NotAss";*)NotAss)
474 | (Const ("Script.Rewrite'_Set'_Inst",_) $ sub_ $ Free (rls_,_) $_$f_) =>
475 if contains_rule (Thm (thmID, refl(*dummy*))) (assoc_rls rls_)
477 if f = f_ then Ass (m,f') else AssWeak (m,f')
480 | assod pt d (m as Rewrite' (thy, rod, rls, put, (thmID, _), f, (f', asm))) stac =
482 (t as Const ("Script.Rewrite",_) $ Free (thmID_,idT) $ b $ f_) =>
483 ((*tracing ("3### assod: stac = " ^ ter2str t);
484 tracing ("3### assod: f(m)= " ^ term2str f);*)
488 then ((*tracing"3### assod ..Ass";*)Ass (m,f'))
490 ((*tracing"### assod ..AssWeak";
491 tracing("### assod: f(m) = " ^ term2str f);
492 tracing("### assod: f(stac)= " ^ term2str f_)*)
494 else ((*tracing"3### assod ..NotAss";*)NotAss))
495 | (Const ("Script.Rewrite'_Set",_) $ Free (rls_,_) $ _ $ f_) =>
496 if contains_rule (Thm (thmID, refl(*dummy*))) (assoc_rls rls_)
498 if f = f_ then Ass (m,f') else AssWeak (m,f')
502 | assod pt d (m as Rewrite_Set_Inst' (thy',put,sub,rls,f,(f',asm)))
503 (Const ("Script.Rewrite'_Set'_Inst",_) $ sub_ $ Free (rls_,_) $ _ $ f_) =
506 if f = f_ then Ass (m,f') else AssWeak (m,f')
509 | assod pt d (m as Detail_Set_Inst' (thy',put,sub,rls,f,(f',asm)))
510 (Const ("Script.Rewrite'_Set'_Inst",_) $ sub_ $ Free (rls_,_) $ _ $ f_) =
513 if f = f_ then Ass (m,f') else AssWeak (m,f')
516 | assod pt d (m as Rewrite_Set' (thy,put,rls,f,(f',asm)))
517 (Const ("Script.Rewrite'_Set",_) $ Free (rls_,_) $ _ $ f_) =
520 if f = f_ then Ass (m,f') else AssWeak (m,f')
523 | assod pt d (m as Detail_Set' (thy,put,rls,f,(f',asm)))
524 (Const ("Script.Rewrite'_Set",_) $ Free (rls_,_) $ _ $ f_) =
527 if f = f_ then Ass (m,f') else AssWeak (m,f')
530 | assod pt d (m as Calculate' (thy',op_,f,(f',thm'))) stac =
532 (Const ("Script.Calculate",_) $ Free (op__,_) $ f_) =>
535 if f = f_ then Ass (m,f') else AssWeak (m,f')
537 | (Const ("Script.Rewrite'_Set'_Inst",_) $ sub_ $ Free(rls_,_) $_$f_) =>
539 val thy = assoc_thy "Isac";
541 if contains_rule (Calc (assoc_calc' thy op_ |> snd)) (assoc_rls rls_)
543 if f = f_ then Ass (m,f') else AssWeak (m,f')
546 | (Const ("Script.Rewrite'_Set",_) $ Free (rls_, _) $ _ $ f_) =>
548 val thy = assoc_thy "Isac";
550 if contains_rule (Calc (assoc_calc' thy op_ |> snd)) (assoc_rls rls_)
552 if f = f_ then Ass (m,f') else AssWeak (m,f')
557 | assod pt _ (m as Check_elementwise' (consts,_,(consts_chkd,_)))
558 (Const ("Script.Check'_elementwise",_) $ consts' $ _) =
560 then Ass (m, consts_chkd)
563 | assod pt _ (m as Or_to_List' (ors, list)) (Const ("Script.Or'_to'_List",_) $ _) =
566 | assod pt _ (m as Take' term) (Const ("Script.Take",_) $ _) =
569 | assod pt _ (m as Substitute' (ro, erls, subte, f, f')) (Const ("Script.Substitute",_) $ _ $ t) =
570 if f = t then Ass (m, f')
571 else (*compare | applicable_in (p,p_) pt (m as Substitute sube)*)
572 if foldl and_ (true, map contains_Var subte)
574 let val t' = subst_atomic (map HOLogic.dest_eq subte (*TODO subte2subst*)) t
575 in if t = t' then error "assod: Substitute' not applicable to val of Expr"
576 else Ass (Substitute' (ro, erls, subte, t, t'), t')
578 else (case rewrite_terms_ (Isac()) ro erls subte t of
579 SOME (t', _) => Ass (Substitute' (ro, erls, subte, t, t'), t')
580 | NONE => error "assod: Substitute' not applicable to val of Expr")
582 | assod pt _ (m as Tac_ (thy,f,id,f')) (Const ("Script.Tac",_) $ Free (id',_)) =
584 then Ass (m, ((Thm.term_of o the o (parse thy)) f'))
587 (*compare "| stac2tac_ thy (Const ("Script.SubProblem",_)"*)
588 | assod pt _ (Subproblem' ((domID,pblID,metID),_,_,_,_,f))
589 (stac as Const ("Script.SubProblem",_) $ (Const ("Product_Type.Pair",_) $
590 Free (dI',_) $ (Const ("Product_Type.Pair",_) $ pI' $ mI')) $ ags') =
592 val dI = ((implode o drop_last(*.."'"*) o Symbol.explode) dI')(*^""*);
593 val thy = maxthy (assoc_thy dI) (rootthy pt);
594 val pI = ((map (de_esc_underscore o free2str)) o isalist2list) pI';
595 val mI = ((map (de_esc_underscore o free2str)) o isalist2list) mI';
596 val ags = isalist2list ags';
601 val pors = (match_ags thy ((#ppc o get_pbt) pI) ags)
602 handle ERROR "actual args do not match formal args"
603 => (match_ags_msg pI stac ags(*raise exn*);[]);
604 val pI' = refine_ori' pors pI;
605 in (pI', pors (*refinement over models with diff.prec only*),
606 (hd o #met o get_pbt) pI')
608 else (pI, (match_ags thy ((#ppc o get_pbt) pI) ags)
609 handle ERROR "actual args do not match formal args"
610 => (match_ags_msg pI stac ags(*raise exn*);[]), mI);
611 val (fmz_, vals) = oris2fmz_vals pors;
612 val {cas, ppc, thy,...} = get_pbt pI
613 val dI = theory2theory' thy (*take dI from _refined_ pbl*)
614 val dI = theory2theory' (maxthy (assoc_thy dI) (rootthy pt))
615 val ctxt = dI |> Thy_Info.get_theory |> Proof_Context.init_global
616 |> declare_constraints' vals
619 NONE => pblterm dI pI
620 | SOME t => subst_atomic ((vars_of_pbl_' ppc) ~~~ vals) t
621 val f = subpbl (strip_thy dI) pI
623 if domID = dI andalso pblID = pI
624 then Ass (Subproblem' ((dI, pI, mI), pors, hdl, fmz_, ctxt, f), f)
630 then tracing("@@@ the 'tac_' proposed to apply does NOT match the leaf found in the script:\n"^
631 "@@@ tac_ = "^(tac_2str m))
635 fun tac_2tac (Refine_Tacitly' (pI,_,_,_,_)) = Refine_Tacitly pI
636 | tac_2tac (Model_Problem' (pI,_,_)) = Model_Problem
637 | tac_2tac (Add_Given' (t,_)) = Add_Given t
638 | tac_2tac (Add_Find' (t,_)) = Add_Find t
639 | tac_2tac (Add_Relation' (t,_)) = Add_Relation t
641 | tac_2tac (Specify_Theory' dI) = Specify_Theory dI
642 | tac_2tac (Specify_Problem' (dI,_)) = Specify_Problem dI
643 | tac_2tac (Specify_Method' (dI,_,_)) = Specify_Method dI
645 | tac_2tac (Rewrite' (thy,rod,erls,put, thm',f,(f',asm))) = Rewrite (thm'_to_thm'' thm')
647 | tac_2tac (Rewrite_Inst' (_(*thy*), _, _, _, sub, thm', _, _))=
648 Rewrite_Inst (subst2subs sub, thm'_to_thm'' thm')
650 | tac_2tac (Rewrite_Set' (thy,put,rls,f,(f',asm))) = Rewrite_Set (id_rls rls)
651 | tac_2tac (Detail_Set' (thy,put,rls,f,(f',asm))) = Detail_Set (id_rls rls)
653 | tac_2tac (Rewrite_Set_Inst' (thy,put,sub,rls,f,(f',asm))) =
654 Rewrite_Set_Inst (subst2subs sub,id_rls rls)
655 | tac_2tac (Detail_Set_Inst' (thy,put,sub,rls,f,(f',asm))) =
656 Detail_Set_Inst (subst2subs sub,id_rls rls)
658 | tac_2tac (Calculate' (thy,op_,t,(t',thm'))) = Calculate (op_)
660 | tac_2tac (Check_elementwise' (consts,pred,consts')) = Check_elementwise pred
662 | tac_2tac (Or_to_List' _) = Or_to_List
663 | tac_2tac (Take' term) = Take (term2str term)
664 | tac_2tac (Substitute' (_, _, subte, t, res)) = Substitute (subte2sube subte)
666 | tac_2tac (Tac_ (_,f,id,f')) = Tac id
668 | tac_2tac (Subproblem' ((domID, pblID, _), _, _, _,_ ,_)) = Subproblem (domID, pblID)
669 | tac_2tac (Check_Postcond' (pblID, _)) = Check_Postcond pblID
670 | tac_2tac Empty_Tac_ = Empty_Tac
672 error ("tac_2tac: not impl. for "^(tac_2str m));
677 (** decompose tac_ to a rule and to (lhs,rhs)
680 val idT = Type ("Script.ID",[]);
681 (*val tt = (Thm.term_of o the o (parse thy)) "square_equation_left::ID";
686 fun make_rule thy t =
687 let val ct = Thm.global_cterm_of thy (Trueprop $ t)
688 in Thm (term_to_string''' thy (Thm.term_of ct), Thm.make_thm ct) end;
690 (* val (Rewrite_Inst'(thy',rod,rls,put,subs,(thmID,thm),f,(f',asm)))=m;
692 (*decompose tac_ to a rule and to (lhs,rhs) for ets FIXME.12.03: obsolete!
693 NOTE.12.03: also used for msg 'not locatable' ?!: 'Subproblem' missing !!!
694 WN0508 only use in tac_2res, which uses only last return-value*)
695 fun rep_tac_ (Rewrite_Inst' (thy', rod, rls, put, subs, (thmID, _), f, (f', _))) =
696 let val fT = type_of f;
697 val b = if put then @{term True} else @{term False};
698 val sT = (type_of o fst o hd) subs;
699 val subs' = list2isalist (HOLogic.mk_prodT (sT, sT))
700 (map HOLogic.mk_prod subs);
701 val sT' = type_of subs';
702 val lhs = Const ("Script.Rewrite'_Inst",[sT',idT,(*fT*)bool,fT] ---> fT)
703 $ subs' $ Free (thmID, idT) $ b $ f;
704 in (((make_rule (assoc_thy thy')) o HOLogic.mk_eq) (lhs,f'),(lhs,f')) end
705 (*Fehlersuche 25.4.01
706 (a)----- als String zusammensetzen:
708 val it = "d_d x #4 + d_d x (x ^^^ #2 + #3 * x)" : string
710 val it = "#0 + d_d x (x ^^^ #2 + #3 * x)" : string
712 val it = [(Free ("bdv","RealDef.real"),Free ("x","RealDef.real"))] : subst
713 > val tt = (Thm.term_of o the o (parse thy))
714 "(Rewrite_Inst[(bdv,x)]diff_const False(d_d x #4 + d_d x (x ^^^ #2 + #3 * x)))=(#0 + d_d x (x ^^^ #2 + #3 * x))";
716 ML> tracing (term2str tt);
717 (Rewrite_Inst [(bdv,x)] diff_const False d_d x #4 + d_d x (x ^^^ #2 + #3 * x)) =
718 #0 + d_d x (x ^^^ #2 + #3 * x)
720 (b)----- laut rep_tac_:
721 > val ttt=HOLogic.mk_eq (lhs,f');
725 (*Fehlersuche 1-2Monate vor 4.01:*)
726 > val tt = (Thm.term_of o the o (parse thy))
727 "Rewrite_Inst[(bdv,x)]square_equation_left True(x=#1+#2)";
730 > val f = (Thm.term_of o the o (parse thy)) "x=#1+#2";
731 > val f' = (Thm.term_of o the o (parse thy)) "x=#3";
732 > val subs = [((Thm.term_of o the o (parse thy)) "bdv",
733 (Thm.term_of o the o (parse thy)) "x")];
734 > val sT = (type_of o fst o hd) subs;
735 > val subs' = list2isalist (HOLogic.mk_prodT (sT, sT))
736 (map HOLogic.mk_prod subs);
737 > val sT' = type_of subs';
738 > val lhs = Const ("Script.Rewrite'_Inst",[sT',idT,fT,fT] ---> fT)
739 $ subs' $ Free (thmID,idT) $ @{term True} $ f;
742 > rep_tac_ (Rewrite_Inst'
743 ("Script","tless_true","eval_rls",false,subs,
744 ("square_equation_left",""),f,(f',[])));
746 | rep_tac_ (Rewrite' (thy', _, _, put, (thmID, _), f, (f', _)))=
749 val b = if put then @{term True} else @{term False};
750 val lhs = Const ("Script.Rewrite",[idT,HOLogic.boolT,fT] ---> fT)
751 $ Free (thmID, idT) $ b $ f;
752 in (((make_rule (assoc_thy thy')) o HOLogic.mk_eq) (lhs,f'),(lhs,f')) end
754 > val tt = (Thm.term_of o the o (parse thy)) (*____ ____..test*)
755 "Rewrite square_equation_left True (x=#1+#2) = (x=#3)";
757 > val f = (Thm.term_of o the o (parse thy)) "x=#1+#2";
758 > val f' = (Thm.term_of o the o (parse thy)) "x=#3";
761 ("Script","tless_true","eval_rls",false,
762 ("square_equation_left",""),f,(f',[])));
763 > val SOME ct = parse thy
764 "Rewrite square_equation_left True (x=#1+#2)";
765 > rewrite_ Script.thy tless_true eval_rls true thm ct;
766 val it = SOME ("x = #3",[]) : (cterm * cterm list) option
768 | rep_tac_ (Rewrite_Set_Inst'
769 (thy',put,subs,rls,f,(f',asm))) =
770 (e_rule, (e_term, f'))
771 (*WN050824: type error ...
772 let val fT = type_of f;
773 val sT = (type_of o fst o hd) subs;
774 val subs' = list2isalist (HOLogic.mk_prodT (sT, sT))
775 (map HOLogic.mk_prod subs);
776 val sT' = type_of subs';
777 val b = if put then @{term True} else @{term False}
778 val lhs = Const ("Script.Rewrite'_Set'_Inst",
779 [sT',idT,fT,fT] ---> fT)
780 $ subs' $ Free (id_rls rls,idT) $ b $ f;
781 in (((make_rule (assoc_thy thy')) o HOLogic.mk_eq) (lhs,f'),(lhs,f')) end*)
782 (* ... vals from Rewrite_Inst' ...
783 > rep_tac_ (Rewrite_Set_Inst'
784 ("Script",false,subs,
785 "isolate_bdv",f,(f',[])));
787 (* val (Rewrite_Set' (thy',put,rls,f,(f',asm)))=m;
789 | rep_tac_ (Rewrite_Set' (thy',put,rls,f,(f',asm)))=
790 let val fT = type_of f;
791 val b = if put then @{term True} else @{term False};
792 val lhs = Const ("Script.Rewrite'_Set",[idT,bool,fT] ---> fT)
793 $ Free (id_rls rls,idT) $ b $ f;
794 in (((make_rule (assoc_thy thy')) o HOLogic.mk_eq) (lhs,f'),(lhs,f')) end
796 val thy = assoc_thy thy';
797 val t = HOLogic.mk_eq (lhs,f');
799 --------------------------------------------------
800 val lll = (Thm.term_of o the o (parse thy))
801 "Rewrite_Set SqRoot_simplify False (d_d x (x ^^^ #2 + #3 * x) + d_d x #4)";
803 --------------------------------------------------
804 > val f = (Thm.term_of o the o (parse thy)) "x=#1+#2";
805 > val f' = (Thm.term_of o the o (parse thy)) "x=#3";
807 rep_tac_ (Rewrite_Set'
808 ("Script",false,"SqRoot_simplify",f,(f',[])));
809 val id = "(Rewrite_Set SqRoot_simplify True x = #1 + #2) = (x = #3)" : string
810 val thm = "(Rewrite_Set SqRoot_simplify True x = #1 + #2) = (x = #3)" : thm
812 | rep_tac_ (Calculate' (thy',op_,f,(f',thm')))=
813 let val fT = type_of f;
814 val lhs = Const ("Script.Calculate",[idT,fT] ---> fT)
816 in (((make_rule (assoc_thy thy')) o HOLogic.mk_eq) (lhs,f'),(lhs,f')) end
818 > val lhs'=(Thm.term_of o the o (parse thy))"Calculate plus (#1+#2)";
819 ... test-root-equ.sml: calculate ...
820 > val Appl m'=applicable_in p pt (Calculate "PLUS");
821 > val (lhs,_)=tac_2etac m';
823 val it = true : bool*)
824 | rep_tac_ (Check_elementwise' (t,str,(t',asm))) = (Erule, (e_term, t'))
825 | rep_tac_ (Subproblem' (_, _, _, _, _, t')) = (Erule, (e_term, t'))
826 | rep_tac_ (Take' (t')) = (Erule, (e_term, t'))
827 | rep_tac_ (Substitute' (_, _, subst,t,t')) = (Erule, (t, t'))
828 | rep_tac_ (Or_to_List' (t, t')) = (Erule, (t, t'))
829 | rep_tac_ m = error ("rep_tac_: not impl.for "^
833 fun tac_2rule m = (fst o rep_tac_) m;
834 fun tac_2etac m = (snd o rep_tac_) m;
835 fun tac_2tac m = (fst o snd o rep_tac_) m;*)
836 fun tac_2res m = (snd o snd o rep_tac_) m;(*ONLYuse of rep_tac_
837 FIXXXXME: simplify rep_tac_*)
840 (* handle a leaf at the end of recursive descent:
841 a leaf is either a tactic or an 'expr' in "let v = expr"
842 where "expr" does not contain a tactic.
843 Handling a leaf comprises
844 (1) 'subst_stacexpr' substitute env and complete curried tactic
845 (2) rewrite the leaf by 'srls'
847 fun handle_leaf call thy srls E a v t =
848 (*WN050916 'upd_env_opt' is a blind copy from previous version*)
849 case subst_stacexpr E a v t of
850 (a', STac stac) => (*script-tactic*)
852 eval_listexpr_ (assoc_thy thy) srls (subst_atomic (upd_env_opt E (a,v)) stac)
855 then tracing ("@@@ "^call^" leaf '"^term2str t^"' ---> STac '"^term2str stac'^"'")
859 | (a', Expr lexpr) => (*leaf-expression*)
861 eval_listexpr_ (assoc_thy thy) srls (subst_atomic (upd_env_opt E (a,v)) lexpr)
864 then tracing("@@@ "^call^" leaf '"^term2str t^"' ---> Expr '"^term2str lexpr'^"'")
866 (a', Expr lexpr')) (*lexpr' is the value of the Expr*)
870 (** locate an applicable stactic in a script **)
872 datatype assoc = (*ExprVal in the sense of denotational semantics*)
873 Assoc of (*the stac is associated, strongly or weakly*)
874 scrstate * (*the current; returned for next_tac etc. outside ass* *)
875 (step list) (*list of steps done until associated stac found;
876 initiated with the data for doing the 1st step,
877 thus the head holds these data further on,
878 while the tail holds steps finished (incl.scrstate in ptree)*)
879 | NasApp of (*stac not associated, but applicable, ptree-node generated*)
880 scrstate * (step list)
881 | NasNap of (*stac not associated, not applicable, nothing generated;
882 for distinction in Or, for leaving iterations, leaving Seq,
883 evaluate scriptexpressions*)
885 fun assoc2str (Assoc _) = "Assoc"
886 | assoc2str (NasNap _) = "NasNap"
887 | assoc2str (NasApp _) = "NasApp";
890 datatype asap = (*arg. of assy _only_ for distinction w.r.t. Or*)
891 Aundef (*undefined: set only by (topmost) Or*)
892 | AssOnly (*do not execute appl stacs - there could be an associated
893 in parallel Or-branch*)
894 | AssGen; (*no Ass(Weak) found within Or, thus
895 search for _applicable_ stacs, execute and generate pt*)
896 (*this constructions doesnt allow arbitrary nesting of Or !!!*)
899 (*assy, ass_up, astep_up scan for locate_gen in a script.
900 search is clearly separated into (1)-(2):
901 (1) assy is recursive descent;
902 (2) ass_up resumes interpretation at a location somewhere in the script;
903 astep_up does only get to the parentnode of the scriptexpr.
905 * call of (2) means _always_ that in this branch below
906 there was an appl.stac (Repeat, Or e1, ...) found by the previous step.
908 fun assy ya (is as (E,l,a,v,S,b),ss) (Const ("HOL.Let",_) $ e $ (Abs (id,T,body))) =
909 (case assy ya ((E , l@[L,R], a,v,S,b),ss) e of
910 NasApp ((E',l,a,v,S,bb),ss) =>
912 val id' = mk_Free (id, T);
913 val E' = upd_env E' (id', v);
914 in assy ya ((E', l@[R,D], a,v,S,b),ss) body end
917 val id' = mk_Free (id, T);
918 val E' = upd_env E (id', v);
919 in assy ya ((E', l@[R,D], a,v,S,b),ss) body end
922 | assy (ya as (thy,ctxt,srls,_,_)) ((E,l,_,v,S,b),ss) (Const ("Script.While",_) $ c $ e $ a) =
923 (if eval_true_ thy srls (subst_atomic (upd_env E (a,v)) c)
924 then assy ya ((E, l@[L,R], SOME a,v,S,b),ss) e
926 | assy (ya as (thy,ctxt,srls,_,_)) ((E,l,a,v,S,b),ss) (Const ("Script.While",_) $ c $ e) =
927 (if eval_true_ thy srls (subst_atomic (upd_env_opt E (a,v)) c)
928 then assy ya ((E, l@[R], a,v,S,b),ss) e
931 | assy (ya as (thy,ctxt,srls,_,_)) ((E,l,a,v,S,b),ss) (Const ("If",_) $ c $ e1 $ e2) =
932 (if eval_true_ thy srls (subst_atomic (upd_env_opt E (a,v)) c)
933 then assy ya ((E, l@[L,R], a,v,S,b),ss) e1
934 else assy ya ((E, l@[ R], a,v,S,b),ss) e2)
936 | assy ya ((E,l,_,v,S,b),ss) (Const ("Script.Try",_) $ e $ a) =
937 (case assy ya ((E, l@[L,R], SOME a,v,S,b),ss) e of
939 | assy ya ((E,l,a,v,S,b),ss) (Const ("Script.Try",_) $ e) =
940 (case assy ya ((E, l@[R], a,v,S,b),ss) e of
943 | assy ya ((E,l,_,v,S,b),ss) (Const ("Script.Seq",_) $e1 $ e2 $ a) =
944 (case assy ya ((E, l@[L,L,R], SOME a,v,S,b),ss) e1 of
945 NasNap (v, E) => assy ya ((E, l@[L,R], SOME a,v,S,b),ss) e2
946 | NasApp ((E,_,_,v,_,_),ss) => assy ya ((E, l@[L,R], SOME a,v,S,b),ss) e2
948 | assy ya ((E,l,a,v,S,b),ss) (Const ("Script.Seq",_) $e1 $ e2) =
949 (case assy ya ((E, l@[L,R], a,v,S,b),ss) e1 of
950 NasNap (v, E) => assy ya ((E, l@[R], a,v,S,b),ss) e2
951 | NasApp ((E,_,_,v,_,_),ss) => assy ya ((E, l@[R], a,v,S,b),ss) e2
954 | assy ya ((E,l,_,v,S,b),ss) (Const ("Script.Repeat",_) $ e $ a) =
955 assy ya ((E,(l@[L,R]),SOME a,v,S,b),ss) e
956 | assy ya ((E,l,a,v,S,b),ss) (Const ("Script.Repeat",_) $ e) =
957 assy ya ((E,(l@[R]),a,v,S,b),ss) e
959 | assy (y,x,s,sc,Aundef) ((E,l,_,v,S,b),ss) (Const ("Script.Or",_) $e1 $ e2 $ a) =
960 (case assy (y,x,s,sc,AssOnly) ((E,(l@[L,L,R]),SOME a,v,S,b),ss) e1 of
962 (case assy (y,x,s,sc,AssOnly) ((E,(l@[L,R]),SOME a,v,S,b),ss) e2 of
964 (case assy (y,x,s,sc,AssGen) ((E,(l@[L,L,R]),SOME a,v,S,b),ss) e1 of
966 assy (y,x,s,sc,AssGen) ((E, (l@[L,R]), SOME a,v,S,b),ss) e2
969 | NasApp _ => error ("assy: FIXXXME ///must not return NasApp///")
971 | assy ya ((E,l,a,v,S,b),ss) (Const ("Script.Or",_) $e1 $ e2) =
972 (case assy ya ((E,(l@[L,R]),a,v,S,b),ss) e1 of
973 NasNap (v, E) => assy ya ((E,(l@[R]),a,v,S,b),ss) e2
976 (*here is not a tactical like TRY etc, but a tactic creating a step in calculation*)
977 | assy (thy',ctxt,sr,d,ap) (is as (E,l,a,v,S,b), (m,_,pt,(p,p_),c)::ss) t =
978 (case handle_leaf "locate" thy' sr E a v t of
980 (NasNap (eval_listexpr_ (assoc_thy thy') sr
981 (subst_atomic (upd_env_opt E (a',v)) t), E))
987 | _ => error ("assy: call by " ^ pos'2str (p,p_));
989 case assod pt d m stac of
991 let val (p'',c',f',pt') =
992 generate1 (assoc_thy thy') m (ScrState (E,l,a',v',S,true), ctxt) (p',p_) pt;
993 in Assoc ((E,l,a',v',S,true), (m,f',pt',p'',c @ c')::ss) end
995 let val (p'',c',f',pt') =
996 generate1 (assoc_thy thy') m (ScrState (E,l,a',v',S,false), ctxt) (p',p_) pt;
997 in Assoc ((E,l,a',v',S,false), (m,f',pt',p'',c @ c')::ss) end
999 (case ap of (*switch for Or: 1st AssOnly, 2nd AssGen*)
1000 AssOnly => (NasNap (v, E))
1002 (case applicable_in (p,p_) pt (stac2tac pt (assoc_thy thy') stac) of
1005 val is = (E,l,a',tac_2res m',S,false(*FIXXXME.WN0?*))
1006 val (p'',c',f',pt') =
1007 generate1 (assoc_thy thy') m' (ScrState is, ctxt) (p',p_) pt;
1008 in NasApp (is,(m,f',pt',p'',c @ c')::ss) end
1009 | Notappl _ => (NasNap (v, E))
1014 fun ass_up (ys as (y,ctxt,s,Prog sc,d)) (is as (E,l,a,v,S,b),ss) (Const ("HOL.Let",_) $ _) =
1016 (*val _= tracing("### ass_up1 Let$e: is=")
1017 val _= tracing(istate2str (ScrState is))*)
1018 val l = drop_last l; (*comes from e, goes to Abs*)
1019 val (Const ("HOL.Let",_) $ e $ (Abs (i,T,body))) = go l sc;
1020 val i = mk_Free (i, T);
1021 val E = upd_env E (i, v);
1022 (*val _=tracing("### ass_up2 Let$e: E="^(subst2str E));*)
1023 in case assy (y,ctxt,s,d,Aundef) ((E, l@[R,D], a,v,S,b),ss) body of
1024 Assoc iss => Assoc iss
1025 | NasApp iss => astep_up ys iss
1026 | NasNap (v, E) => astep_up ys ((E,l,a,v,S,b),ss) end
1028 | ass_up ys (iss as (is,_)) (Abs (_,_,_)) =
1029 ((*tracing("### ass_up Abs: is=");
1030 tracing(istate2str (ScrState is));*)
1031 astep_up ys iss) (*TODO 5.9.00: env ?*)
1033 | ass_up ys (iss as (is,_)) (Const ("HOL.Let",_) $ e $ (Abs (i,T,b)))=
1034 ((*tracing("### ass_up Let $ e $ Abs: is=");
1035 tracing(istate2str (ScrState is));*)
1036 astep_up ys iss) (*TODO 5.9.00: env ?*)
1038 | ass_up ysa iss (Const ("Script.Seq",_) $ _ $ _ $ _) =
1039 astep_up ysa iss (*all has been done in (*2*) below*)
1041 | ass_up ysa iss (Const ("Script.Seq",_) $ _ $ _) =
1042 astep_up ysa iss (*2*: comes from e2*)
1044 | ass_up (ysa as (y,ctxt,s,Prog sc,d)) (is as (E,l,a,v,S,b),ss)
1045 (Const ("Script.Seq",_) $ _ ) = (*2*: comes from e1, goes to e2*)
1047 val up = drop_last l;
1048 val Const ("Script.Seq",_) $ _ $ e2 = go up sc
1049 (*val _= tracing("### ass_up Seq$e: is=")
1050 val _= tracing(istate2str (ScrState is))*)
1052 case assy (y,ctxt,s,d,Aundef) ((E, up@[R], a,v,S,b),ss) e2 of
1053 NasNap (v,E) => astep_up ysa ((E,up,a,v,S,b),ss)
1054 | NasApp iss => astep_up ysa iss
1057 | ass_up ysa iss (Const ("Script.Try",_) $ e $ _) =
1060 (* val (ysa, iss, (Const ("Script.Try",_) $ e)) =
1061 (ys, ((E,up,a,v,S,b),ss), (go up sc));
1063 | ass_up ysa iss (Const ("Script.Try",_) $ e) =
1064 ((*tracing("### ass_up Try $ e");*)
1067 | ass_up (ys as (y,ctxt,s,_,d)) ((E,l,_,v,S,b),ss)
1068 (*(Const ("Script.While",_) $ c $ e $ a) = WN050930 blind fix*)
1069 (t as Const ("Script.While",_) $ c $ e $ a) =
1070 ((*tracing("### ass_up: While c= "^
1071 (term2str (subst_atomic (upd_env E (a,v)) c)));*)
1072 if eval_true_ y s (subst_atomic (upd_env E (a,v)) c)
1073 then (case assy (y,ctxt,s,d,Aundef) ((E, l@[L,R], SOME a,v,S,b),ss) e of
1074 NasNap (v,E') => astep_up ys ((E',l, SOME a,v,S,b),ss)
1075 | NasApp ((E',l,a,v,S,b),ss) =>
1076 ass_up ys ((E',l,a,v,S,b),ss) t (*WN050930 't' was not assigned*)
1078 else astep_up ys ((E,l, SOME a,v,S,b),ss)
1081 | ass_up (ys as (y,ctxt,s,_,d)) ((E,l,a,v,S,b),ss)
1082 (*(Const ("Script.While",_) $ c $ e) = WN050930 blind fix*)
1083 (t as Const ("Script.While",_) $ c $ e) =
1084 if eval_true_ y s (subst_atomic (upd_env_opt E (a,v)) c)
1085 then (case assy (y,ctxt,s,d,Aundef) ((E, l@[R], a,v,S,b),ss) e of
1086 NasNap (v,E') => astep_up ys ((E',l, a,v,S,b),ss)
1087 | NasApp ((E',l,a,v,S,b),ss) =>
1088 ass_up ys ((E',l,a,v,S,b),ss) t (*WN050930 't' was not assigned*)
1090 else astep_up ys ((E,l, a,v,S,b),ss)
1092 | ass_up y iss (Const ("If",_) $ _ $ _ $ _) = astep_up y iss
1094 | ass_up (ys as (y,ctxt,s,_,d)) ((E,l,_,v,S,b),ss)
1095 (t as Const ("Script.Repeat",_) $ e $ a) =
1096 (case assy (y,ctxt,s,d, Aundef) ((E, (l@[L,R]), SOME a,v,S,b),ss) e of
1097 NasNap (v,E') => astep_up ys ((E',l, SOME a,v,S,b),ss)
1098 | NasApp ((E',l,a,v,S,b),ss) =>
1099 ass_up ys ((E',l,a,v,S,b),ss) t
1102 | ass_up (ys as (y,ctxt,s,_,d)) (is as ((E,l,a,v,S,b),ss))
1103 (t as Const ("Script.Repeat",_) $ e) =
1104 (case assy (y,ctxt,s,d,Aundef) ((E, (l@[R]), a,v,S,b),ss) e of
1105 NasNap (v', E') => astep_up ys ((E',l,a,v',S,b),ss)
1106 | NasApp ((E',l,a,v',S,bb),ss) =>
1107 ass_up ys ((E',l,a,v',S,b),ss) t
1110 | ass_up y iss (Const ("Script.Or",_) $ _ $ _ $ _) = astep_up y iss
1112 | ass_up y iss (Const ("Script.Or",_) $ _ $ _) = astep_up y iss
1114 | ass_up y ((E,l,a,v,S,b),ss) (Const ("Script.Or",_) $ _ ) =
1115 astep_up y ((E, (drop_last l), a,v,S,b),ss)
1118 error ("ass_up not impl for t= "^(term2str t))
1120 and astep_up (ys as (_,_,_,Prog sc,_)) ((E,l,a,v,S,b),ss) =
1123 let val up = drop_last l;
1124 (*val _= tracing("### astep_up: E= "^env2str E);*)
1125 in ass_up ys ((E,up,a,v,S,b),ss) (go up sc) end
1126 else (NasNap (v, E))
1133 (* use"ME/script.sml";
1135 term2str (go up sc);
1139 (*check if there are tacs for rewriting only*)
1140 fun rew_only ([]:step list) = true
1141 | rew_only (((Rewrite' _ ,_,_,_,_))::ss) = rew_only ss
1142 | rew_only (((Rewrite_Inst' _ ,_,_,_,_))::ss) = rew_only ss
1143 | rew_only (((Rewrite_Set' _ ,_,_,_,_))::ss) = rew_only ss
1144 | rew_only (((Rewrite_Set_Inst' _ ,_,_,_,_))::ss) = rew_only ss
1145 | rew_only (((Calculate' _ ,_,_,_,_))::ss) = rew_only ss
1146 | rew_only (((Begin_Trans' _ ,_,_,_,_))::ss) = rew_only ss
1147 | rew_only (((End_Trans' _ ,_,_,_,_))::ss) = rew_only ss
1148 | rew_only _ = false;
1152 Steps of istate (*producing hd of step list (which was latest)
1153 for next_tac, for reporting Safe|Unsafe to DG*)
1154 * step (*(scrstate producing this step is in ptree !)*)
1155 list (*locate_gen may produce intermediate steps*)
1156 | NotLocatable; (*no (m Ass m') or (m AssWeak m') found*)
1160 (* locate_gen tries to locate an input tac m in the script.
1161 pursuing this goal the script is executed until an (m' equiv m) is found,
1162 or the end of the script
1164 m : input by the user, already checked by applicable_in,
1165 (to be searched within Or; and _not_ an m doing the step on ptree !)
1166 p,pt: (incl ets) at the time of input
1168 d : canonical simplifier for locating Take, Substitute, Subproblems etc.
1169 ets : ets at the time of input
1170 l : the location (in scr) of the stac which generated the current formula
1172 Steps: pt,p (incl. ets) with m done
1173 pos' list of proofobjs cut (from generate)
1174 safe: implied from last proofobj
1176 ///ToDo : ets contains a list of tacs to be done before m can be done
1177 NOT IMPL. -- "error: do other step before"
1178 NotLocatable: thus generate_hard
1180 fun locate_gen (thy', g_) (Rewrite' (_, ro, er, pa, (thmID, str), f, _)) (pt, p)
1181 (Rfuns {locate_rule=lo,...}, d) (RrlsState (_,f'',rss,rts), ctxt) =
1182 (case lo rss f (Thm (thmID, mk_thm (assoc_thy thy') str)) of
1185 Steps (rts2steps [] ((pt,p),(f,f'',rss,rts),(thy',ro,er,pa)) rts'))
1187 | locate_gen (thy',srls) (m:tac_) ((pt,p):ptree * pos')
1188 (scr as Prog (h $ body),d) (ScrState (E,l,a,v,S,b), ctxt) =
1189 let val thy = assoc_thy thy';
1191 case if l = [] orelse ((*init.in solve..Apply_Method...*)
1192 (last_elem o fst) p = 0 andalso snd p = Res)
1193 then (assy (thy',ctxt,srls,d,Aundef) ((E,[R],a,v,S,b), [(m,EmptyMout,pt,p,[])]) body)
1194 else (astep_up (thy',ctxt,srls,scr,d) ((E,l,a,v,S,b), [(m,EmptyMout,pt,p,[])]) ) of
1195 Assoc (iss as (is as (_,_,_,_,_,strong_ass), ss as ((m',f',pt',p',c')::_))) =>
1198 (Steps (ScrState is, ss))
1200 if rew_only ss (*andalso 'not strong_ass'= associated weakly*)
1204 val po' = case p_ of Frm => po | Res => lev_on po
1205 val (p'',c'',f'',pt'') =
1206 generate1 thy m (ScrState is, ctxt) (po',p_) pt;
1207 in Steps (ScrState is, [(m, f'',pt'',p'',c'')]) end
1208 else Steps (ScrState is, ss))
1210 | NasApp _ => NotLocatable
1211 | err => error ("not-found-in-script: NotLocatable from " ^ PolyML.makestring err) end
1213 | locate_gen _ m _ (sc,_) (is, _) =
1214 error ("locate_gen: wrong arguments,\n tac= " ^ tac_2str m ^ ",\n " ^
1215 "scr= " ^ scr2str sc ^ ",\n istate= " ^ istate2str is);
1217 (** find the next stactic in a script **)
1219 datatype appy = (*ExprVal in the sense of denotational semantics*)
1220 Appy of (*applicable stac found, search stalled*)
1221 tac_ * (*tac_ associated (fun assod) with stac*)
1222 scrstate (*after determination of stac WN.18.8.03*)
1223 | Napp of (*stac found was not applicable;
1224 this mode may become Skip in Repeat, Try and Or*)
1225 env (*stack*) (*popped while nxt_up*)
1226 | Skip of (*for restart after Appy, for leaving iterations,
1227 for passing the value of scriptexpressions,
1228 and for finishing the script successfully*)
1229 term * env (*stack*);
1231 (*appy, nxt_up, nstep_up scanning for next_tac.
1232 search is clearly separated into (1)-(2):
1233 (1) appy is recursive descent;
1234 (2) nxt_up resumes interpretation at a location somewhere in the script;
1235 nstep_up does only get to the parentnode of the scriptexpr.
1237 * call of (2) means _always_ that in this branch below
1238 there was an applicable stac (Repeat, Or e1, ...)
1242 datatype appy_ = (*as argument in nxt_up, nstep_up, from appy*)
1243 (* Appy is only (final) returnvalue, not argument during search *)
1244 Napp_ (*ev. detects 'script is not appropriate for this example'*)
1245 | Skip_; (*detects 'script successfully finished'
1246 also used as init-value for resuming; this works,
1247 because 'nxt_up Or e1' treats as Appy*)
1249 fun appy thy ptp E l (t as Const ("HOL.Let",_) $ e $ (Abs (i,T,b))) a v =
1250 (case appy thy ptp E (l@[L,R]) e a v of
1252 let val E' = upd_env E (Free (i,T), res);
1253 in appy thy ptp E' (l@[R,D]) b a v end
1256 | appy (thy as (th,sr)) ptp E l (t as Const ("Script.While"(*1*),_) $ c $ e $ a) _ v =
1257 (if eval_true_ th sr (subst_atomic (upd_env E (a,v)) c)
1258 then appy thy ptp E (l@[L,R]) e (SOME a) v
1261 | appy (thy as (th,sr)) ptp E l (t as Const ("Script.While"(*2*),_) $ c $ e) a v =
1262 (if eval_true_ th sr (subst_atomic (upd_env_opt E (a,v)) c)
1263 then appy thy ptp E (l@[R]) e a v
1266 | appy (thy as (th,sr)) ptp E l (t as Const ("If",_) $ c $ e1 $ e2) a v =
1267 (if eval_true_ th sr (subst_atomic (upd_env_opt E (a,v)) c)
1268 then ((*tracing("### appy If: true");*)appy thy ptp E (l@[L,R]) e1 a v)
1269 else ((*tracing("### appy If: false");*)appy thy ptp E (l@[ R]) e2 a v))
1271 | appy thy ptp E l (Const ("Script.Repeat"(*1*),_) $ e $ a) _ v =
1272 (appy thy ptp E (l@[L,R]) e (SOME a) v)
1274 | appy thy ptp E l (Const ("Script.Repeat"(*2*),_) $ e) a v =
1275 (appy thy ptp E (l@[R]) e a v)
1277 | appy thy ptp E l (t as Const ("Script.Try",_) $ e $ a) _ v =
1278 (case appy thy ptp E (l@[L,R]) e (SOME a) v of
1279 Napp E => (Skip (v, E))
1282 | appy thy ptp E l(t as Const ("Script.Try",_) $ e) a v =
1283 (case appy thy ptp E (l@[R]) e a v of
1284 Napp E => (Skip (v, E))
1287 | appy thy ptp E l (Const ("Script.Or"(*1*),_) $e1 $ e2 $ a) _ v =
1288 (case appy thy ptp E (l@[L,L,R]) e1 (SOME a) v of
1289 Appy lme => Appy lme
1290 | _ => appy thy ptp E (*env*) (l@[L,R]) e2 (SOME a) v)
1292 | appy thy ptp E l (Const ("Script.Or"(*2*),_) $e1 $ e2) a v =
1293 (case appy thy ptp E (l@[L,R]) e1 a v of
1294 Appy lme => Appy lme
1295 | _ => appy thy ptp E (l@[R]) e2 a v)
1297 | appy thy ptp E l (Const ("Script.Seq"(*1*),_) $ e1 $ e2 $ a) _ v =
1298 (case appy thy ptp E (l@[L,L,R]) e1 (SOME a) v of
1299 Skip (v,E) => appy thy ptp E (l@[L,R]) e2 (SOME a) v
1302 | appy thy ptp E l (Const ("Script.Seq",_) $ e1 $ e2) a v =
1303 (case appy thy ptp E (l@[L,R]) e1 a v of
1304 Skip (v,E) => appy thy ptp E (l@[R]) e2 a v
1307 (* a leaf has been found *)
1308 | appy (thy as (th,sr)) (pt, p) E l t a v =
1309 (case handle_leaf "next " th sr E a v t of
1310 (a', Expr s) => Skip (s, E)
1311 | (a', STac stac) =>
1312 let val (m,m') = stac2tac_ pt (assoc_thy th) stac
1315 Subproblem _ => Appy (m', (E,l,a',tac_2res m',Sundef,false))
1317 (case applicable_in p pt m of
1318 Appl m' => (Appy (m', (E,l,a',tac_2res m',Sundef,false)))
1319 | _ => ((*tracing("### appy: Napp");*)Napp E))
1322 fun nxt_up thy ptp (scr as (Prog sc)) E l ay
1323 (t as Const ("HOL.Let",_) $ _) a v = (*comes from let=...*)
1325 then nstep_up thy ptp scr E (drop_last l) Napp_ a v
1328 val up = drop_last l;
1329 val (Const ("HOL.Let",_) $ e $ (Abs (i,T,body))) = go up sc;
1330 val i = mk_Free (i, T);
1331 val E = upd_env E (i, v);
1333 case appy thy ptp E (up@[R,D]) body a v of
1334 Appy lre => Appy lre
1335 | Napp E => nstep_up thy ptp scr E up Napp_ a v
1336 | Skip (v,E) => nstep_up thy ptp scr E up Skip_ a v end)
1338 | nxt_up thy ptp scr E l ay
1339 (t as Abs (_,_,_)) a v =
1340 ((*tracing("### nxt_up Abs: " ^ term2str t);*)
1341 nstep_up thy ptp scr E l ay a v)
1343 | nxt_up thy ptp scr E l ay
1344 (t as Const ("HOL.Let",_) $ e $ (Abs (i,T,b))) a v =
1345 ((*tracing("### nxt_up Let$e$Abs: is=");
1346 tracing(istate2str (ScrState (E,l,a,v,Sundef,false)));*)
1347 (*tracing("### nxt_up Let e Abs: " ^ term2str t);*)
1348 nstep_up thy ptp scr E l ay a v)
1350 (*no appy_: never causes Napp -> Helpless*)
1351 | nxt_up (thy as (th,sr)) ptp scr E l _
1352 (Const ("Script.While"(*1*),_) $ c $ e $ _) a v =
1353 if eval_true_ th sr (subst_atomic (upd_env_opt E (a,v)) c)
1354 then case appy thy ptp E (l@[L,R]) e a v of
1356 | Napp E => nstep_up thy ptp scr E l Skip_ a v
1357 | Skip (v,E) => nstep_up thy ptp scr E l Skip_ a v
1358 else nstep_up thy ptp scr E l Skip_ a v
1360 (*no appy_: never causes Napp - Helpless*)
1361 | nxt_up (thy as (th,sr)) ptp scr E l _
1362 (Const ("Script.While"(*2*),_) $ c $ e) a v =
1363 if eval_true_ th sr (subst_atomic (upd_env_opt E (a,v)) c)
1364 then case appy thy ptp E (l@[R]) e a v of
1366 | Napp E => nstep_up thy ptp scr E l Skip_ a v
1367 | Skip (v,E) => nstep_up thy ptp scr E l Skip_ a v
1368 else nstep_up thy ptp scr E l Skip_ a v
1370 | nxt_up thy ptp scr E l ay (Const ("If",_) $ _ $ _ $ _) a v =
1371 nstep_up thy ptp scr E l ay a v
1373 | nxt_up thy ptp scr E l _ (*no appy_: there was already a stac below*)
1374 (Const ("Script.Repeat"(*1*),T) $ e $ _) a v =
1375 (case appy thy ptp (*upd_env*) E (*a,v)*) ((l@[L,R]):loc_) e a v of
1377 | Napp E => ((*tracing("### nxt_up Repeat a: ");*)
1378 nstep_up thy ptp scr E l Skip_ a v)
1379 | Skip (v,E) => ((*tracing("### nxt_up Repeat: Skip res ="^
1380 (Sign.string_of_term(sign_of (assoc_thy thy)) res'));*)
1381 nstep_up thy ptp scr E l Skip_ a v))
1383 | nxt_up thy ptp scr E l _ (*no appy_: there was already a stac below*)
1384 (Const ("Script.Repeat"(*2*),T) $ e) a v =
1385 (case appy thy ptp (*upd_env*) E (*a,v)*) ((l@[R]):loc_) e a v of
1387 | Napp E => ((*tracing("### nxt_up Repeat a: ");*)
1388 nstep_up thy ptp scr E l Skip_ a v)
1389 | Skip (v,E) => ((*tracing("### nxt_up Repeat: Skip res ="^
1390 (Sign.string_of_term(sign_of (assoc_thy thy)) res'));*)
1391 nstep_up thy ptp scr E l Skip_ a v))
1393 | nxt_up thy ptp scr E l _ (*makes Napp to Skip*)
1394 (t as Const ("Script.Try",_) $ e $ _) a v =
1395 ((*tracing("### nxt_up Try " ^ term2str t);*)
1396 nstep_up thy ptp scr E l Skip_ a v )
1398 | nxt_up thy ptp scr E l _ (*makes Napp to Skip*)
1399 (t as Const ("Script.Try"(*2*),_) $ e) a v =
1400 ((*tracing("### nxt_up Try " ^ term2str t);*)
1401 nstep_up thy ptp scr E l Skip_ a v)
1404 | nxt_up thy ptp scr E l ay
1405 (Const ("Script.Or",_) $ _ $ _ $ _) a v = nstep_up thy ptp scr E l ay a v
1407 | nxt_up thy ptp scr E l ay
1408 (Const ("Script.Or",_) $ _ $ _) a v = nstep_up thy ptp scr E l ay a v
1410 | nxt_up thy ptp scr E l ay
1411 (Const ("Script.Or",_) $ _ ) a v =
1412 nstep_up thy ptp scr E (drop_last l) ay a v
1414 | nxt_up thy ptp scr E l ay (*all has been done in (*2*) below*)
1415 (Const ("Script.Seq"(*1*),_) $ _ $ _ $ _) a v =
1416 nstep_up thy ptp scr E l ay a v
1418 | nxt_up thy ptp scr E l ay (*comes from e2*)
1419 (Const ("Script.Seq"(*2*),_) $ _ $ e2) a v =
1420 nstep_up thy ptp scr E l ay a v
1422 | nxt_up thy ptp (scr as Prog sc) E l ay (*comes from e1*)
1423 (Const ("Script.Seq",_) $ _) a v =
1425 then nstep_up thy ptp scr E (drop_last l) Napp_ a v
1427 let val up = drop_last l;
1428 val Const ("Script.Seq"(*2*),_) $ _ $ e2 = go up sc;
1429 in case appy thy ptp E (up@[R]) e2 a v of
1431 | Napp E => nstep_up thy ptp scr E up Napp_ a v
1432 | Skip (v,E) => nstep_up thy ptp scr E up Skip_ a v end
1434 | nxt_up (thy,_) ptp scr E l ay t a v = error ("nxt_up not impl for " ^ term2str t)
1436 and nstep_up thy ptp (Prog sc) E l ay a v =
1439 let val up = drop_last l;
1440 in (nxt_up thy ptp (Prog sc) E up ay (go up sc) a v ) end
1441 else (*interpreted to end*)
1442 if ay = Skip_ then Skip (v, E) else Napp E
1445 (* decide for the next applicable stac in the script;
1446 returns (stactic, value) - the value in case the script is finished
1447 12.8.02: ~~~~~ and no assumptions ??? FIXME ???
1448 20.8.02: must return p in case of finished, because the next script
1449 consulted need not be the calling script:
1450 in case of detail ie. _inserted_ PrfObjs, the next stac
1451 has to searched in a script with PblObj.status<>Complete !
1452 (.. not true for other details ..PrfObj ??????????????????
1453 20.8.02: do NOT return safe (is only changed in locate !!!)
1455 fun next_tac (thy,_) (pt,p) (Rfuns {next_rule,...}) (RrlsState(f,f',rss,_), ctxt) =
1457 then (End_Detail' (f',[])(*8.6.03*), (Uistate, ctxt),
1458 (f', Sundef(*FIXME is no value of next_tac! vor 8.6.03*))) (*finished*)
1460 (case next_rule rss f of
1461 NONE => (Empty_Tac_, (Uistate, ctxt), (e_term, Sundef)) (*helpless*)
1462 | SOME (Thm (id, thm))(*8.6.03: muss auch f' liefern ?!!*) =>
1463 (Rewrite' (thy, "e_rew_ord", e_rls, false,
1464 (id, thm |> Thm.prop_of |> term2str), f, (e_term, [(*!?!8.6.03*)])),
1465 (Uistate, ctxt), (e_term, Sundef))) (*next stac*)
1467 | next_tac thy (ptp as (pt, pos as (p, _)):ptree * pos') (sc as Prog (h $ body))
1468 (ScrState (E,l,a,v,s,b), ctxt) =
1469 (case if l = [] then appy thy ptp E [R] body NONE v
1470 else nstep_up thy ptp sc E l Skip_ a v of
1471 Skip (v, _) => (*finished*)
1472 (case par_pbl_det pt p of
1475 val (_,pblID,_) = get_obj g_spec pt p';
1476 in (Check_Postcond' (pblID, (v, [(*assigned in next step*)])),
1477 (e_istate, ctxt), (v,s))
1479 | (_, p', rls') => (End_Detail' (e_term,[])(*8.6.03*), (e_istate, ctxt), (v,s)))
1480 | Napp _ => (Empty_Tac_, (e_istate, ctxt), (e_term, Sundef)) (*helpless*)
1481 | Appy (m', scrst as (_,_,_,v,_,_)) => (m', (ScrState scrst, ctxt), (v, Sundef))) (*next stac*)
1483 | next_tac _ _ _ (is, _) = error ("next_tac: not impl for " ^ (istate2str is));
1486 (*.create the initial interpreter state from the items of the guard.*)
1487 val errmsg = "ERROR: found no actual arguments for prog. of "
1488 fun init_scrstate thy itms metID =
1490 val actuals = itms2args thy metID itms
1491 val _ = if actuals <> [] then () else raise ERROR (errmsg ^ strs2str' metID)
1492 val scr as Prog sc = (#scr o get_met) metID
1493 val formals = formal_args sc
1494 (*expects same sequence of (actual) args in itms and (formal) args in met*)
1495 fun relate_args env [] [] = env
1496 | relate_args env _ [] =
1497 error ("ERROR in creating the environment for '" ^
1498 id_of_scr sc ^ "' from \nthe items of the guard of " ^
1499 metID2str metID ^ ",\n" ^
1500 "formal arg(s), from the script, miss actual arg(s), from the guards env:\n" ^
1501 (string_of_int o length) formals ^
1502 " formals: " ^ terms2str formals ^ "\n" ^
1503 (string_of_int o length) actuals ^
1504 " actuals: " ^ terms2str actuals)
1505 | relate_args env [] actual_finds = env (*may drop Find!*)
1506 | relate_args env (a::aa) (f::ff) =
1507 if type_of a = type_of f
1508 then relate_args (env @ [(a, f)]) aa ff
1510 error ("ERROR in creating the environment for '" ^
1511 id_of_scr sc ^ "' from \nthe items of the guard of " ^
1512 metID2str metID ^ ",\n" ^
1513 "different types of formal arg, from the script, " ^
1514 "and actual arg, from the guards env:'\n" ^
1515 "formal: '" ^ term2str a ^ "::" ^ (type2str o type_of) a ^ "'\n" ^
1516 "actual: '" ^ term2str f ^ "::" ^ (type2str o type_of) f ^ "'\n" ^
1518 "formals: " ^ terms2str formals ^ "\n" ^
1519 "actuals: " ^ terms2str actuals)
1520 val env = relate_args [] formals actuals;
1521 val ctxt = Proof_Context.init_global thy |> declare_constraints' actuals
1522 val {pre, prls, ...} = get_met metID;
1523 val pres = check_preconds thy prls pre itms |> map snd;
1524 val ctxt = ctxt |> insert_assumptions pres;
1525 in (ScrState (env,[],NONE,e_term,Safe,true), ctxt, scr):istate * Proof.context * scr end;
1527 (* decide, where to get script/istate from:
1528 (*1*) from PblObj.env: at begin of script if no init_form
1529 (*2*) from PblObj/PrfObj: if stac is in the middle of the script
1530 (*3*) from rls/PrfObj: in case of detail a ruleset *)
1531 fun from_pblobj_or_detail' thy' (p,p_) pt =
1532 let val ctxt = get_ctxt pt (p,p_)
1534 if member op = [Pbl,Met] p_
1535 then case get_obj g_env pt p of
1536 NONE => error "from_pblobj_or_detail': no istate"
1539 val metID = get_obj g_metID pt p
1540 val {srls,...} = get_met metID
1541 in (srls, is, (#scr o get_met) metID) end
1543 let val (pbl,p',rls') = par_pbl_det pt p
1547 val thy = assoc_thy thy'
1548 val PblObj{meth=itms,...} = get_obj I pt p'
1549 val metID = get_obj g_metID pt p'
1550 val {srls,...} = get_met metID
1551 in (*if last_elem p = 0 nothing written to pt yet*)
1552 (srls, get_loc pt (p,p_), (#scr o get_met) metID)
1555 (e_rls, (*FIXME.WN0?: get from pbl or met !!! unused for Rrls in locate_gen, next_tac*)
1558 Rls {scr=scr,...} => scr
1559 | Seq {scr=scr,...} => scr
1560 | Rrls {scr=rfuns,...} => rfuns)
1564 (*.get script and istate from PblObj, see (*1*) above.*)
1565 fun from_pblobj' thy' (p,p_) pt =
1567 val p' = par_pblobj pt p
1568 val thy = assoc_thy thy'
1569 val PblObj {meth=itms, ...} = get_obj I pt p'
1570 val metID = get_obj g_metID pt p'
1571 val {srls,scr,...} = get_met metID
1573 if last_elem p = 0 (*nothing written to pt yet*)
1575 let val (is, ctxt, scr) = init_scrstate thy itms metID
1576 in (srls, (is, ctxt), scr) end
1577 else (srls, get_loc pt (p,p_), scr)
1580 (*.get the stactics and problems of a script as tacs
1581 instantiated with the current environment;
1582 l is the location which generated the given formula.*)
1583 (*WN.12.5.03: quick-and-dirty repair for listexpressions*)
1584 fun is_spec_pos Pbl = true
1585 | is_spec_pos Met = true
1586 | is_spec_pos _ = false;
1588 (*. fetch _all_ tactics from script .*)
1589 fun sel_rules _ (([],Res):pos') =
1590 raise PTREE "no tactics applicable at the end of a calculation"
1591 | sel_rules pt (p,p_) =
1593 then [get_obj g_tac pt p]
1595 let val pp = par_pblobj pt p;
1596 val thy' = (get_obj g_domID pt pp):theory';
1597 val thy = assoc_thy thy';
1598 val metID = get_obj g_metID pt pp;
1599 val metID' =if metID =e_metID then(thd3 o snd3)(get_obj g_origin pt pp)
1601 val {scr = Prog sc,srls,...} = get_met metID'
1602 val ScrState (env,_,a,v,_,_) = get_istate pt (p,p_);
1603 in map ((stac2tac pt thy) o rep_stacexpr o #2 o
1604 (handle_leaf "selrul" thy' srls env a v)) (stacpbls sc) end;
1606 (*. fetch tactics from script and filter _applicable_ tactics;
1607 in case of Rewrite_Set* go down to _atomic_ rewrite-tactics .*)
1608 fun sel_appl_atomic_tacs _ (([],Res):pos') =
1609 raise PTREE "no tactics applicable at the end of a calculation"
1610 | sel_appl_atomic_tacs pt (p,p_) =
1612 then [get_obj g_tac pt p]
1615 val pp = par_pblobj pt p
1616 val thy' = (get_obj g_domID pt pp):theory'
1617 val thy = assoc_thy thy'
1618 val metID = get_obj g_metID pt pp
1621 then (thd3 o snd3) (get_obj g_origin pt pp)
1623 val {scr = Prog sc,srls,erls,rew_ord'=ro,...} = get_met metID'
1624 val ScrState (env,_,a,v,_,_) = get_istate pt (p,p_)
1625 val alltacs = (*we expect at least 1 stac in a script*)
1626 map ((stac2tac pt thy) o rep_stacexpr o #2 o
1627 (handle_leaf "selrul" thy' srls env a v)) (stacpbls sc)
1630 Frm => get_obj g_form pt p
1631 | Res => (fst o (get_obj g_result pt)) p
1632 (*WN071231 ? replace atomic_appl_tacs with applicable_in (ineff!) ?*)
1633 in (distinct o flat o (map (atomic_appl_tacs thy ro erls f))) alltacs end;
1641 (* use"ME/script.sml";