1 (* Title: interpreter for scripts
2 Author: Walther Neuper 2000
3 (c) due to copyright terms
4 12345678901234567890123456789012345678901234567890123456789012345678901234567890
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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 (_, 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, thm, f, (f', asm))) stac =
466 let val thmID = (thmID_of_derivation_name o Thm.get_name_hint) thm
469 (Const ("Script.Rewrite'_Inst",_) $ subs_ $ Free (thmID_,idT) $b$f_) =>
473 then ((*tracing"3### assod ..Ass";*)Ass (m,f'))
474 else ((*tracing"3### assod ..AssWeak";*)AssWeak(m, f'))
475 else ((*tracing"3### assod ..NotAss";*)NotAss)
476 | (Const ("Script.Rewrite'_Set'_Inst",_) $ sub_ $ Free (rls_,_) $_$f_) =>
477 if contains_rule (Thm (thmID, refl(*dummy*))) (assoc_rls rls_)
479 if f = f_ then Ass (m,f') else AssWeak (m,f')
483 | assod pt d (m as Rewrite' (thy, rod, rls, put, thm, f, (f', asm))) stac =
484 let val thmID = (thmID_of_derivation_name o Thm.get_name_hint) thm
487 (t as Const ("Script.Rewrite",_) $ Free (thmID_,idT) $ b $ f_) =>
488 ((*tracing ("3### assod: stac = " ^ ter2str t);
489 tracing ("3### assod: f(m)= " ^ term2str f);*)
493 then ((*tracing"3### assod ..Ass";*)Ass (m,f'))
495 ((*tracing"### assod ..AssWeak";
496 tracing("### assod: f(m) = " ^ term2str f);
497 tracing("### assod: f(stac)= " ^ term2str f_)*)
499 else ((*tracing"3### assod ..NotAss";*)NotAss))
500 | (Const ("Script.Rewrite'_Set",_) $ Free (rls_,_) $ _ $ f_) =>
501 if contains_rule (Thm (thmID, refl(*dummy*))) (assoc_rls rls_)
503 if f = f_ then Ass (m,f') else AssWeak (m,f')
508 | assod pt d (m as Rewrite_Set_Inst' (thy',put,sub,rls,f,(f',asm)))
509 (Const ("Script.Rewrite'_Set'_Inst",_) $ sub_ $ Free (rls_,_) $ _ $ f_) =
512 if f = f_ then Ass (m,f') else AssWeak (m,f')
515 | assod pt d (m as Detail_Set_Inst' (thy',put,sub,rls,f,(f',asm)))
516 (Const ("Script.Rewrite'_Set'_Inst",_) $ sub_ $ Free (rls_,_) $ _ $ f_) =
519 if f = f_ then Ass (m,f') else AssWeak (m,f')
522 | assod pt d (m as Rewrite_Set' (thy,put,rls,f,(f',asm)))
523 (Const ("Script.Rewrite'_Set",_) $ Free (rls_,_) $ _ $ f_) =
526 if f = f_ then Ass (m,f') else AssWeak (m,f')
529 | assod pt d (m as Detail_Set' (thy,put,rls,f,(f',asm)))
530 (Const ("Script.Rewrite'_Set",_) $ Free (rls_,_) $ _ $ f_) =
533 if f = f_ then Ass (m,f') else AssWeak (m,f')
536 | assod pt d (m as Calculate' (thy',op_,f,(f',thm'))) stac =
538 (Const ("Script.Calculate",_) $ Free (op__,_) $ f_) =>
541 if f = f_ then Ass (m,f') else AssWeak (m,f')
543 | (Const ("Script.Rewrite'_Set'_Inst",_) $ sub_ $ Free(rls_,_) $_$f_) =>
545 val thy = assoc_thy "Isac";
547 if contains_rule (Calc (assoc_calc' thy op_ |> snd)) (assoc_rls rls_)
549 if f = f_ then Ass (m,f') else AssWeak (m,f')
552 | (Const ("Script.Rewrite'_Set",_) $ Free (rls_, _) $ _ $ f_) =>
554 val thy = assoc_thy "Isac";
556 if contains_rule (Calc (assoc_calc' thy op_ |> snd)) (assoc_rls rls_)
558 if f = f_ then Ass (m,f') else AssWeak (m,f')
563 | assod pt _ (m as Check_elementwise' (consts,_,(consts_chkd,_)))
564 (Const ("Script.Check'_elementwise",_) $ consts' $ _) =
566 then Ass (m, consts_chkd)
569 | assod pt _ (m as Or_to_List' (ors, list)) (Const ("Script.Or'_to'_List",_) $ _) =
572 | assod pt _ (m as Take' term) (Const ("Script.Take",_) $ _) =
575 | assod pt _ (m as Substitute' (ro, erls, subte, f, f')) (Const ("Script.Substitute",_) $ _ $ t) =
576 if f = t then Ass (m, f')
577 else (*compare | applicable_in (p,p_) pt (m as Substitute sube)*)
578 if foldl and_ (true, map contains_Var subte)
580 let val t' = subst_atomic (map HOLogic.dest_eq subte (*TODO subte2subst*)) t
581 in if t = t' then error "assod: Substitute' not applicable to val of Expr"
582 else Ass (Substitute' (ro, erls, subte, t, t'), t')
584 else (case rewrite_terms_ (Isac()) ro erls subte t of
585 SOME (t', _) => Ass (Substitute' (ro, erls, subte, t, t'), t')
586 | NONE => error "assod: Substitute' not applicable to val of Expr")
588 | assod pt _ (m as Tac_ (thy,f,id,f')) (Const ("Script.Tac",_) $ Free (id',_)) =
590 then Ass (m, ((Thm.term_of o the o (parse thy)) f'))
593 (*compare "| stac2tac_ thy (Const ("Script.SubProblem",_)"*)
594 | assod pt _ (Subproblem' ((domID,pblID,metID),_,_,_,_,f))
595 (stac as Const ("Script.SubProblem",_) $ (Const ("Product_Type.Pair",_) $
596 Free (dI',_) $ (Const ("Product_Type.Pair",_) $ pI' $ mI')) $ ags') =
598 val dI = ((implode o drop_last(*.."'"*) o Symbol.explode) dI')(*^""*);
599 val thy = maxthy (assoc_thy dI) (rootthy pt);
600 val pI = ((map (de_esc_underscore o free2str)) o isalist2list) pI';
601 val mI = ((map (de_esc_underscore o free2str)) o isalist2list) mI';
602 val ags = isalist2list ags';
607 val pors = (match_ags thy ((#ppc o get_pbt) pI) ags)
608 handle ERROR "actual args do not match formal args"
609 => (match_ags_msg pI stac ags(*raise exn*);[]);
610 val pI' = refine_ori' pors pI;
611 in (pI', pors (*refinement over models with diff.prec only*),
612 (hd o #met o get_pbt) pI')
614 else (pI, (match_ags thy ((#ppc o get_pbt) pI) ags)
615 handle ERROR "actual args do not match formal args"
616 => (match_ags_msg pI stac ags(*raise exn*);[]), mI);
617 val (fmz_, vals) = oris2fmz_vals pors;
618 val {cas, ppc, thy,...} = get_pbt pI
619 val dI = theory2theory' thy (*take dI from _refined_ pbl*)
620 val dI = theory2theory' (maxthy (assoc_thy dI) (rootthy pt))
621 val ctxt = dI |> Thy_Info.get_theory |> Proof_Context.init_global
622 |> declare_constraints' vals
625 NONE => pblterm dI pI
626 | SOME t => subst_atomic ((vars_of_pbl_' ppc) ~~~ vals) t
627 val f = subpbl (strip_thy dI) pI
629 if domID = dI andalso pblID = pI
630 then Ass (Subproblem' ((dI, pI, mI), pors, hdl, fmz_, ctxt, f), f)
636 then tracing("@@@ the 'tac_' proposed to apply does NOT match the leaf found in the script:\n"^
637 "@@@ tac_ = "^(tac_2str m))
641 fun tac_2tac (Refine_Tacitly' (pI,_,_,_,_)) = Refine_Tacitly pI
642 | tac_2tac (Model_Problem' (pI,_,_)) = Model_Problem
643 | tac_2tac (Add_Given' (t,_)) = Add_Given t
644 | tac_2tac (Add_Find' (t,_)) = Add_Find t
645 | tac_2tac (Add_Relation' (t,_)) = Add_Relation t
647 | tac_2tac (Specify_Theory' dI) = Specify_Theory dI
648 | tac_2tac (Specify_Problem' (dI,_)) = Specify_Problem dI
649 | tac_2tac (Specify_Method' (dI,_,_)) = Specify_Method dI
651 | tac_2tac (Rewrite' (_(*thy*), _, _, _, thm, _, _)) = Rewrite (thm''_of_thm thm)
653 | tac_2tac (Rewrite_Inst' (_(*thy*), _, _, _, sub, thm, _, _))=
654 Rewrite_Inst (subst2subs sub, thm''_of_thm thm)
656 | tac_2tac (Rewrite_Set' (thy,put,rls,f,(f',asm))) = Rewrite_Set (id_rls rls)
657 | tac_2tac (Detail_Set' (thy,put,rls,f,(f',asm))) = Detail_Set (id_rls rls)
659 | tac_2tac (Rewrite_Set_Inst' (thy,put,sub,rls,f,(f',asm))) =
660 Rewrite_Set_Inst (subst2subs sub,id_rls rls)
661 | tac_2tac (Detail_Set_Inst' (thy,put,sub,rls,f,(f',asm))) =
662 Detail_Set_Inst (subst2subs sub,id_rls rls)
664 | tac_2tac (Calculate' (thy,op_,t,(t',thm'))) = Calculate (op_)
666 | tac_2tac (Check_elementwise' (consts,pred,consts')) = Check_elementwise pred
668 | tac_2tac (Or_to_List' _) = Or_to_List
669 | tac_2tac (Take' term) = Take (term2str term)
670 | tac_2tac (Substitute' (_, _, subte, t, res)) = Substitute (subte2sube subte)
672 | tac_2tac (Tac_ (_,f,id,f')) = Tac id
674 | tac_2tac (Subproblem' ((domID, pblID, _), _, _, _,_ ,_)) = Subproblem (domID, pblID)
675 | tac_2tac (Check_Postcond' (pblID, _)) = Check_Postcond pblID
676 | tac_2tac Empty_Tac_ = Empty_Tac
678 error ("tac_2tac: not impl. for "^(tac_2str m));
683 (** decompose tac_ to a rule and to (lhs,rhs)
686 val idT = Type ("Script.ID",[]);
687 (*val tt = (Thm.term_of o the o (parse thy)) "square_equation_left::ID";
692 fun make_rule thy t =
693 let val ct = Thm.global_cterm_of thy (Trueprop $ t)
694 in Thm (term_to_string''' thy (Thm.term_of ct), Thm.make_thm ct) end;
696 (* val (Rewrite_Inst'(thy',rod,rls,put,subs,(thmID,thm),f,(f',asm)))=m;
698 (*decompose tac_ to a rule and to (lhs,rhs) for ets FIXME.12.03: obsolete!
699 NOTE.12.03: also used for msg 'not locatable' ?!: 'Subproblem' missing !!!
700 WN0508 only use in tac_2res, which uses only last return-value*)
701 fun rep_tac_ (Rewrite_Inst' (thy', rod, rls, put, subs, thm, f, (f', _))) =
702 let val fT = type_of f;
703 val b = if put then @{term True} else @{term False};
704 val sT = (type_of o fst o hd) subs;
705 val subs' = list2isalist (HOLogic.mk_prodT (sT, sT))
706 (map HOLogic.mk_prod subs);
707 val sT' = type_of subs';
708 val lhs = Const ("Script.Rewrite'_Inst",[sT',idT,(*fT*)bool,fT] ---> fT)
709 $ subs' $ Free (thmID_of_derivation_name' thm, idT) $ b $ f;
710 in (((make_rule (assoc_thy thy')) o HOLogic.mk_eq) (lhs,f'),(lhs,f')) end
711 (*Fehlersuche 25.4.01
712 (a)----- als String zusammensetzen:
714 val it = "d_d x #4 + d_d x (x ^^^ #2 + #3 * x)" : string
716 val it = "#0 + d_d x (x ^^^ #2 + #3 * x)" : string
718 val it = [(Free ("bdv","RealDef.real"),Free ("x","RealDef.real"))] : subst
719 > val tt = (Thm.term_of o the o (parse thy))
720 "(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))";
722 ML> tracing (term2str tt);
723 (Rewrite_Inst [(bdv,x)] diff_const False d_d x #4 + d_d x (x ^^^ #2 + #3 * x)) =
724 #0 + d_d x (x ^^^ #2 + #3 * x)
726 (b)----- laut rep_tac_:
727 > val ttt=HOLogic.mk_eq (lhs,f');
731 (*Fehlersuche 1-2Monate vor 4.01:*)
732 > val tt = (Thm.term_of o the o (parse thy))
733 "Rewrite_Inst[(bdv,x)]square_equation_left True(x=#1+#2)";
736 > val f = (Thm.term_of o the o (parse thy)) "x=#1+#2";
737 > val f' = (Thm.term_of o the o (parse thy)) "x=#3";
738 > val subs = [((Thm.term_of o the o (parse thy)) "bdv",
739 (Thm.term_of o the o (parse thy)) "x")];
740 > val sT = (type_of o fst o hd) subs;
741 > val subs' = list2isalist (HOLogic.mk_prodT (sT, sT))
742 (map HOLogic.mk_prod subs);
743 > val sT' = type_of subs';
744 > val lhs = Const ("Script.Rewrite'_Inst",[sT',idT,fT,fT] ---> fT)
745 $ subs' $ Free (thmID,idT) $ @{term True} $ f;
748 > rep_tac_ (Rewrite_Inst'
749 ("Script","tless_true","eval_rls",false,subs,
750 ("square_equation_left",""),f,(f',[])));
752 | rep_tac_ (Rewrite' (thy', _, _, put, thm, f, (f', _)))=
755 val b = if put then @{term True} else @{term False};
756 val lhs = Const ("Script.Rewrite",[idT,HOLogic.boolT,fT] ---> fT)
757 $ Free (thmID_of_derivation_name' thm, idT) $ b $ f;
758 in (((make_rule (assoc_thy thy')) o HOLogic.mk_eq) (lhs,f'),(lhs,f')) end
760 > val tt = (Thm.term_of o the o (parse thy)) (*____ ____..test*)
761 "Rewrite square_equation_left True (x=#1+#2) = (x=#3)";
763 > val f = (Thm.term_of o the o (parse thy)) "x=#1+#2";
764 > val f' = (Thm.term_of o the o (parse thy)) "x=#3";
767 ("Script","tless_true","eval_rls",false,
768 ("square_equation_left",""),f,(f',[])));
769 > val SOME ct = parse thy
770 "Rewrite square_equation_left True (x=#1+#2)";
771 > rewrite_ Script.thy tless_true eval_rls true thm ct;
772 val it = SOME ("x = #3",[]) : (cterm * cterm list) option
774 | rep_tac_ (Rewrite_Set_Inst'
775 (thy',put,subs,rls,f,(f',asm))) =
776 (e_rule, (e_term, f'))
777 (*WN050824: type error ...
778 let val fT = type_of f;
779 val sT = (type_of o fst o hd) subs;
780 val subs' = list2isalist (HOLogic.mk_prodT (sT, sT))
781 (map HOLogic.mk_prod subs);
782 val sT' = type_of subs';
783 val b = if put then @{term True} else @{term False}
784 val lhs = Const ("Script.Rewrite'_Set'_Inst",
785 [sT',idT,fT,fT] ---> fT)
786 $ subs' $ Free (id_rls rls,idT) $ b $ f;
787 in (((make_rule (assoc_thy thy')) o HOLogic.mk_eq) (lhs,f'),(lhs,f')) end*)
788 (* ... vals from Rewrite_Inst' ...
789 > rep_tac_ (Rewrite_Set_Inst'
790 ("Script",false,subs,
791 "isolate_bdv",f,(f',[])));
793 (* val (Rewrite_Set' (thy',put,rls,f,(f',asm)))=m;
795 | rep_tac_ (Rewrite_Set' (thy',put,rls,f,(f',asm)))=
796 let val fT = type_of f;
797 val b = if put then @{term True} else @{term False};
798 val lhs = Const ("Script.Rewrite'_Set",[idT,bool,fT] ---> fT)
799 $ Free (id_rls rls,idT) $ b $ f;
800 in (((make_rule (assoc_thy thy')) o HOLogic.mk_eq) (lhs,f'),(lhs,f')) end
802 val thy = assoc_thy thy';
803 val t = HOLogic.mk_eq (lhs,f');
805 --------------------------------------------------
806 val lll = (Thm.term_of o the o (parse thy))
807 "Rewrite_Set SqRoot_simplify False (d_d x (x ^^^ #2 + #3 * x) + d_d x #4)";
809 --------------------------------------------------
810 > val f = (Thm.term_of o the o (parse thy)) "x=#1+#2";
811 > val f' = (Thm.term_of o the o (parse thy)) "x=#3";
813 rep_tac_ (Rewrite_Set'
814 ("Script",false,"SqRoot_simplify",f,(f',[])));
815 val id = "(Rewrite_Set SqRoot_simplify True x = #1 + #2) = (x = #3)" : string
816 val thm = "(Rewrite_Set SqRoot_simplify True x = #1 + #2) = (x = #3)" : thm
818 | rep_tac_ (Calculate' (thy',op_,f,(f',thm')))=
819 let val fT = type_of f;
820 val lhs = Const ("Script.Calculate",[idT,fT] ---> fT)
822 in (((make_rule (assoc_thy thy')) o HOLogic.mk_eq) (lhs,f'),(lhs,f')) end
824 > val lhs'=(Thm.term_of o the o (parse thy))"Calculate plus (#1+#2)";
825 ... test-root-equ.sml: calculate ...
826 > val Appl m'=applicable_in p pt (Calculate "PLUS");
827 > val (lhs,_)=tac_2etac m';
829 val it = true : bool*)
830 | rep_tac_ (Check_elementwise' (t,str,(t',asm))) = (Erule, (e_term, t'))
831 | rep_tac_ (Subproblem' (_, _, _, _, _, t')) = (Erule, (e_term, t'))
832 | rep_tac_ (Take' (t')) = (Erule, (e_term, t'))
833 | rep_tac_ (Substitute' (_, _, subst,t,t')) = (Erule, (t, t'))
834 | rep_tac_ (Or_to_List' (t, t')) = (Erule, (t, t'))
835 | rep_tac_ m = error ("rep_tac_: not impl.for "^
839 fun tac_2rule m = (fst o rep_tac_) m;
840 fun tac_2etac m = (snd o rep_tac_) m;
841 fun tac_2tac m = (fst o snd o rep_tac_) m;*)
842 fun tac_2res m = (snd o snd o rep_tac_) m;(*ONLYuse of rep_tac_
843 FIXXXXME: simplify rep_tac_*)
846 (* handle a leaf at the end of recursive descent:
847 a leaf is either a tactic or an 'expr' in "let v = expr"
848 where "expr" does not contain a tactic.
849 Handling a leaf comprises
850 (1) 'subst_stacexpr' substitute env and complete curried tactic
851 (2) rewrite the leaf by 'srls'
853 fun handle_leaf call thy srls E a v t =
854 (*WN050916 'upd_env_opt' is a blind copy from previous version*)
855 case subst_stacexpr E a v t of
856 (a', STac stac) => (*script-tactic*)
858 eval_listexpr_ (assoc_thy thy) srls (subst_atomic (upd_env_opt E (a,v)) stac)
861 then tracing ("@@@ "^call^" leaf '"^term2str t^"' ---> STac '"^term2str stac'^"'")
865 | (a', Expr lexpr) => (*leaf-expression*)
867 eval_listexpr_ (assoc_thy thy) srls (subst_atomic (upd_env_opt E (a,v)) lexpr)
870 then tracing("@@@ "^call^" leaf '"^term2str t^"' ---> Expr '"^term2str lexpr'^"'")
872 (a', Expr lexpr')) (*lexpr' is the value of the Expr*)
876 (** locate an applicable stactic in a script **)
878 datatype assoc = (*ExprVal in the sense of denotational semantics*)
879 Assoc of (*the stac is associated, strongly or weakly*)
880 scrstate * (*the current; returned for next_tac etc. outside ass* *)
881 (step list) (*list of steps done until associated stac found;
882 initiated with the data for doing the 1st step,
883 thus the head holds these data further on,
884 while the tail holds steps finished (incl.scrstate in ptree)*)
885 | NasApp of (*stac not associated, but applicable, ptree-node generated*)
886 scrstate * (step list)
887 | NasNap of (*stac not associated, not applicable, nothing generated;
888 for distinction in Or, for leaving iterations, leaving Seq,
889 evaluate scriptexpressions*)
891 fun assoc2str (Assoc _) = "Assoc"
892 | assoc2str (NasNap _) = "NasNap"
893 | assoc2str (NasApp _) = "NasApp";
896 datatype asap = (*arg. of assy _only_ for distinction w.r.t. Or*)
897 Aundef (*undefined: set only by (topmost) Or*)
898 | AssOnly (*do not execute appl stacs - there could be an associated
899 in parallel Or-branch*)
900 | AssGen; (*no Ass(Weak) found within Or, thus
901 search for _applicable_ stacs, execute and generate pt*)
902 (*this constructions doesnt allow arbitrary nesting of Or !!!*)
905 (*assy, ass_up, astep_up scan for locate_gen in a script.
906 search is clearly separated into (1)-(2):
907 (1) assy is recursive descent;
908 (2) ass_up resumes interpretation at a location somewhere in the script;
909 astep_up does only get to the parentnode of the scriptexpr.
911 * call of (2) means _always_ that in this branch below
912 there was an appl.stac (Repeat, Or e1, ...) found by the previous step.
914 fun assy ya (is as (E,l,a,v,S,b),ss) (Const ("HOL.Let",_) $ e $ (Abs (id,T,body))) =
915 (case assy ya ((E , l@[L,R], a,v,S,b),ss) e of
916 NasApp ((E',l,a,v,S,bb),ss) =>
918 val id' = mk_Free (id, T);
919 val E' = upd_env E' (id', v);
920 in assy ya ((E', l@[R,D], a,v,S,b),ss) body end
923 val id' = mk_Free (id, T);
924 val E' = upd_env E (id', v);
925 in assy ya ((E', l@[R,D], a,v,S,b),ss) body end
928 | assy (ya as (thy,ctxt,srls,_,_)) ((E,l,_,v,S,b),ss) (Const ("Script.While",_) $ c $ e $ a) =
929 (if eval_true_ thy srls (subst_atomic (upd_env E (a,v)) c)
930 then assy ya ((E, l@[L,R], SOME a,v,S,b),ss) e
932 | assy (ya as (thy,ctxt,srls,_,_)) ((E,l,a,v,S,b),ss) (Const ("Script.While",_) $ c $ e) =
933 (if eval_true_ thy srls (subst_atomic (upd_env_opt E (a,v)) c)
934 then assy ya ((E, l@[R], a,v,S,b),ss) e
937 | assy (ya as (thy,ctxt,srls,_,_)) ((E,l,a,v,S,b),ss) (Const ("If",_) $ c $ e1 $ e2) =
938 (if eval_true_ thy srls (subst_atomic (upd_env_opt E (a,v)) c)
939 then assy ya ((E, l@[L,R], a,v,S,b),ss) e1
940 else assy ya ((E, l@[ R], a,v,S,b),ss) e2)
942 | assy ya ((E,l,_,v,S,b),ss) (Const ("Script.Try",_) $ e $ a) =
943 (case assy ya ((E, l@[L,R], SOME a,v,S,b),ss) e of
945 | assy ya ((E,l,a,v,S,b),ss) (Const ("Script.Try",_) $ e) =
946 (case assy ya ((E, l@[R], a,v,S,b),ss) e of
949 | assy ya ((E,l,_,v,S,b),ss) (Const ("Script.Seq",_) $e1 $ e2 $ a) =
950 (case assy ya ((E, l@[L,L,R], SOME a,v,S,b),ss) e1 of
951 NasNap (v, E) => assy ya ((E, l@[L,R], SOME a,v,S,b),ss) e2
952 | NasApp ((E,_,_,v,_,_),ss) => assy ya ((E, l@[L,R], SOME a,v,S,b),ss) e2
954 | assy ya ((E,l,a,v,S,b),ss) (Const ("Script.Seq",_) $e1 $ e2) =
955 (case assy ya ((E, l@[L,R], a,v,S,b),ss) e1 of
956 NasNap (v, E) => assy ya ((E, l@[R], a,v,S,b),ss) e2
957 | NasApp ((E,_,_,v,_,_),ss) => assy ya ((E, l@[R], a,v,S,b),ss) e2
960 | assy ya ((E,l,_,v,S,b),ss) (Const ("Script.Repeat",_) $ e $ a) =
961 assy ya ((E,(l@[L,R]),SOME a,v,S,b),ss) e
962 | assy ya ((E,l,a,v,S,b),ss) (Const ("Script.Repeat",_) $ e) =
963 assy ya ((E,(l@[R]),a,v,S,b),ss) e
965 | assy (y,x,s,sc,Aundef) ((E,l,_,v,S,b),ss) (Const ("Script.Or",_) $e1 $ e2 $ a) =
966 (case assy (y,x,s,sc,AssOnly) ((E,(l@[L,L,R]),SOME a,v,S,b),ss) e1 of
968 (case assy (y,x,s,sc,AssOnly) ((E,(l@[L,R]),SOME a,v,S,b),ss) e2 of
970 (case assy (y,x,s,sc,AssGen) ((E,(l@[L,L,R]),SOME a,v,S,b),ss) e1 of
972 assy (y,x,s,sc,AssGen) ((E, (l@[L,R]), SOME a,v,S,b),ss) e2
975 | NasApp _ => error ("assy: FIXXXME ///must not return NasApp///")
977 | assy ya ((E,l,a,v,S,b),ss) (Const ("Script.Or",_) $e1 $ e2) =
978 (case assy ya ((E,(l@[L,R]),a,v,S,b),ss) e1 of
979 NasNap (v, E) => assy ya ((E,(l@[R]),a,v,S,b),ss) e2
982 (*here is not a tactical like TRY etc, but a tactic creating a step in calculation*)
983 | assy (thy',ctxt,sr,d,ap) (is as (E,l,a,v,S,b), (m,_,pt,(p,p_),c)::ss) t =
984 (case handle_leaf "locate" thy' sr E a v t of
986 (NasNap (eval_listexpr_ (assoc_thy thy') sr
987 (subst_atomic (upd_env_opt E (a',v)) t), E))
993 | _ => error ("assy: call by " ^ pos'2str (p,p_));
995 case assod pt d m stac of
997 let val (p'',c',f',pt') =
998 generate1 (assoc_thy thy') m (ScrState (E,l,a',v',S,true), ctxt) (p',p_) pt;
999 in Assoc ((E,l,a',v',S,true), (m,f',pt',p'',c @ c')::ss) end
1001 let val (p'',c',f',pt') =
1002 generate1 (assoc_thy thy') m (ScrState (E,l,a',v',S,false), ctxt) (p',p_) pt;
1003 in Assoc ((E,l,a',v',S,false), (m,f',pt',p'',c @ c')::ss) end
1005 (case ap of (*switch for Or: 1st AssOnly, 2nd AssGen*)
1006 AssOnly => (NasNap (v, E))
1008 (case applicable_in (p,p_) pt (stac2tac pt (assoc_thy thy') stac) of
1011 val is = (E,l,a',tac_2res m',S,false(*FIXXXME.WN0?*))
1012 val (p'',c',f',pt') =
1013 generate1 (assoc_thy thy') m' (ScrState is, ctxt) (p',p_) pt;
1014 in NasApp (is,(m,f',pt',p'',c @ c')::ss) end
1015 | Notappl _ => (NasNap (v, E))
1020 fun ass_up (ys as (y,ctxt,s,Prog sc,d)) (is as (E,l,a,v,S,b),ss) (Const ("HOL.Let",_) $ _) =
1022 (*val _= tracing("### ass_up1 Let$e: is=")
1023 val _= tracing(istate2str (ScrState is))*)
1024 val l = drop_last l; (*comes from e, goes to Abs*)
1025 val (Const ("HOL.Let",_) $ e $ (Abs (i,T,body))) = go l sc;
1026 val i = mk_Free (i, T);
1027 val E = upd_env E (i, v);
1028 (*val _=tracing("### ass_up2 Let$e: E="^(subst2str E));*)
1029 in case assy (y,ctxt,s,d,Aundef) ((E, l@[R,D], a,v,S,b),ss) body of
1030 Assoc iss => Assoc iss
1031 | NasApp iss => astep_up ys iss
1032 | NasNap (v, E) => astep_up ys ((E,l,a,v,S,b),ss) end
1034 | ass_up ys (iss as (is,_)) (Abs (_,_,_)) =
1035 ((*tracing("### ass_up Abs: is=");
1036 tracing(istate2str (ScrState is));*)
1037 astep_up ys iss) (*TODO 5.9.00: env ?*)
1039 | ass_up ys (iss as (is,_)) (Const ("HOL.Let",_) $ e $ (Abs (i,T,b)))=
1040 ((*tracing("### ass_up Let $ e $ Abs: is=");
1041 tracing(istate2str (ScrState is));*)
1042 astep_up ys iss) (*TODO 5.9.00: env ?*)
1044 | ass_up ysa iss (Const ("Script.Seq",_) $ _ $ _ $ _) =
1045 astep_up ysa iss (*all has been done in (*2*) below*)
1047 | ass_up ysa iss (Const ("Script.Seq",_) $ _ $ _) =
1048 astep_up ysa iss (*2*: comes from e2*)
1050 | ass_up (ysa as (y,ctxt,s,Prog sc,d)) (is as (E,l,a,v,S,b),ss)
1051 (Const ("Script.Seq",_) $ _ ) = (*2*: comes from e1, goes to e2*)
1053 val up = drop_last l;
1054 val Const ("Script.Seq",_) $ _ $ e2 = go up sc
1055 (*val _= tracing("### ass_up Seq$e: is=")
1056 val _= tracing(istate2str (ScrState is))*)
1058 case assy (y,ctxt,s,d,Aundef) ((E, up@[R], a,v,S,b),ss) e2 of
1059 NasNap (v,E) => astep_up ysa ((E,up,a,v,S,b),ss)
1060 | NasApp iss => astep_up ysa iss
1063 | ass_up ysa iss (Const ("Script.Try",_) $ e $ _) =
1066 (* val (ysa, iss, (Const ("Script.Try",_) $ e)) =
1067 (ys, ((E,up,a,v,S,b),ss), (go up sc));
1069 | ass_up ysa iss (Const ("Script.Try",_) $ e) =
1070 ((*tracing("### ass_up Try $ e");*)
1073 | ass_up (ys as (y,ctxt,s,_,d)) ((E,l,_,v,S,b),ss)
1074 (*(Const ("Script.While",_) $ c $ e $ a) = WN050930 blind fix*)
1075 (t as Const ("Script.While",_) $ c $ e $ a) =
1076 ((*tracing("### ass_up: While c= "^
1077 (term2str (subst_atomic (upd_env E (a,v)) c)));*)
1078 if eval_true_ y s (subst_atomic (upd_env E (a,v)) c)
1079 then (case assy (y,ctxt,s,d,Aundef) ((E, l@[L,R], SOME a,v,S,b),ss) e of
1080 NasNap (v,E') => astep_up ys ((E',l, SOME a,v,S,b),ss)
1081 | NasApp ((E',l,a,v,S,b),ss) =>
1082 ass_up ys ((E',l,a,v,S,b),ss) t (*WN050930 't' was not assigned*)
1084 else astep_up ys ((E,l, SOME a,v,S,b),ss)
1087 | ass_up (ys as (y,ctxt,s,_,d)) ((E,l,a,v,S,b),ss)
1088 (*(Const ("Script.While",_) $ c $ e) = WN050930 blind fix*)
1089 (t as Const ("Script.While",_) $ c $ e) =
1090 if eval_true_ y s (subst_atomic (upd_env_opt E (a,v)) c)
1091 then (case assy (y,ctxt,s,d,Aundef) ((E, l@[R], a,v,S,b),ss) e of
1092 NasNap (v,E') => astep_up ys ((E',l, a,v,S,b),ss)
1093 | NasApp ((E',l,a,v,S,b),ss) =>
1094 ass_up ys ((E',l,a,v,S,b),ss) t (*WN050930 't' was not assigned*)
1096 else astep_up ys ((E,l, a,v,S,b),ss)
1098 | ass_up y iss (Const ("If",_) $ _ $ _ $ _) = astep_up y iss
1100 | ass_up (ys as (y,ctxt,s,_,d)) ((E,l,_,v,S,b),ss)
1101 (t as Const ("Script.Repeat",_) $ e $ a) =
1102 (case assy (y,ctxt,s,d, Aundef) ((E, (l@[L,R]), SOME a,v,S,b),ss) e of
1103 NasNap (v,E') => astep_up ys ((E',l, SOME a,v,S,b),ss)
1104 | NasApp ((E',l,a,v,S,b),ss) =>
1105 ass_up ys ((E',l,a,v,S,b),ss) t
1108 | ass_up (ys as (y,ctxt,s,_,d)) (is as ((E,l,a,v,S,b),ss))
1109 (t as Const ("Script.Repeat",_) $ e) =
1110 (case assy (y,ctxt,s,d,Aundef) ((E, (l@[R]), a,v,S,b),ss) e of
1111 NasNap (v', E') => astep_up ys ((E',l,a,v',S,b),ss)
1112 | NasApp ((E',l,a,v',S,bb),ss) =>
1113 ass_up ys ((E',l,a,v',S,b),ss) t
1116 | ass_up y iss (Const ("Script.Or",_) $ _ $ _ $ _) = astep_up y iss
1118 | ass_up y iss (Const ("Script.Or",_) $ _ $ _) = astep_up y iss
1120 | ass_up y ((E,l,a,v,S,b),ss) (Const ("Script.Or",_) $ _ ) =
1121 astep_up y ((E, (drop_last l), a,v,S,b),ss)
1124 error ("ass_up not impl for t= "^(term2str t))
1126 and astep_up (ys as (_,_,_,Prog sc,_)) ((E,l,a,v,S,b),ss) =
1129 let val up = drop_last l;
1130 (*val _= tracing("### astep_up: E= "^env2str E);*)
1131 in ass_up ys ((E,up,a,v,S,b),ss) (go up sc) end
1132 else (NasNap (v, E))
1139 (* use"ME/script.sml";
1141 term2str (go up sc);
1145 (*check if there are tacs for rewriting only*)
1146 fun rew_only ([]:step list) = true
1147 | rew_only (((Rewrite' _ ,_,_,_,_))::ss) = rew_only ss
1148 | rew_only (((Rewrite_Inst' _ ,_,_,_,_))::ss) = rew_only ss
1149 | rew_only (((Rewrite_Set' _ ,_,_,_,_))::ss) = rew_only ss
1150 | rew_only (((Rewrite_Set_Inst' _ ,_,_,_,_))::ss) = rew_only ss
1151 | rew_only (((Calculate' _ ,_,_,_,_))::ss) = rew_only ss
1152 | rew_only (((Begin_Trans' _ ,_,_,_,_))::ss) = rew_only ss
1153 | rew_only (((End_Trans' _ ,_,_,_,_))::ss) = rew_only ss
1154 | rew_only _ = false;
1158 Steps of istate (*producing hd of step list (which was latest)
1159 for next_tac, for reporting Safe|Unsafe to DG*)
1160 * step (*(scrstate producing this step is in ptree !)*)
1161 list (*locate_gen may produce intermediate steps*)
1162 | NotLocatable; (*no (m Ass m') or (m AssWeak m') found*)
1166 (* locate_gen tries to locate an input tac m in the script.
1167 pursuing this goal the script is executed until an (m' equiv m) is found,
1168 or the end of the script
1170 m : input by the user, already checked by applicable_in,
1171 (to be searched within Or; and _not_ an m doing the step on ptree !)
1172 p,pt: (incl ets) at the time of input
1174 d : canonical simplifier for locating Take, Substitute, Subproblems etc.
1175 ets : ets at the time of input
1176 l : the location (in scr) of the stac which generated the current formula
1178 Steps: pt,p (incl. ets) with m done
1179 pos' list of proofobjs cut (from generate)
1180 safe: implied from last proofobj
1182 ///ToDo : ets contains a list of tacs to be done before m can be done
1183 NOT IMPL. -- "error: do other step before"
1184 NotLocatable: thus generate_hard
1186 fun locate_gen (thy', g_) (Rewrite' (_, ro, er, pa, thm, f, _)) (pt, p)
1187 (Rfuns {locate_rule=lo,...}, d) (RrlsState (_,f'',rss,rts), ctxt) =
1188 (case lo rss f (Thm (thmID_of_derivation_name' thm, thm)) of
1191 Steps (rts2steps [] ((pt,p),(f,f'',rss,rts),(thy',ro,er,pa)) rts'))
1193 | locate_gen (thy',srls) (m:tac_) ((pt,p):ptree * pos')
1194 (scr as Prog (h $ body),d) (ScrState (E,l,a,v,S,b), ctxt) =
1195 let val thy = assoc_thy thy';
1197 case if l = [] orelse ((*init.in solve..Apply_Method...*)
1198 (last_elem o fst) p = 0 andalso snd p = Res)
1199 then (assy (thy',ctxt,srls,d,Aundef) ((E,[R],a,v,S,b), [(m,EmptyMout,pt,p,[])]) body)
1200 else (astep_up (thy',ctxt,srls,scr,d) ((E,l,a,v,S,b), [(m,EmptyMout,pt,p,[])]) ) of
1201 Assoc (iss as (is as (_,_,_,_,_,strong_ass), ss as ((m',f',pt',p',c')::_))) =>
1204 (Steps (ScrState is, ss))
1206 if rew_only ss (*andalso 'not strong_ass'= associated weakly*)
1210 val po' = case p_ of Frm => po | Res => lev_on po
1211 val (p'',c'',f'',pt'') =
1212 generate1 thy m (ScrState is, ctxt) (po',p_) pt;
1213 in Steps (ScrState is, [(m, f'',pt'',p'',c'')]) end
1214 else Steps (ScrState is, ss))
1216 | NasApp _ => NotLocatable
1217 | err => error ("not-found-in-script: NotLocatable from " ^ PolyML.makestring err) end
1219 | locate_gen _ m _ (sc,_) (is, _) =
1220 error ("locate_gen: wrong arguments,\n tac= " ^ tac_2str m ^ ",\n " ^
1221 "scr= " ^ scr2str sc ^ ",\n istate= " ^ istate2str is);
1223 (** find the next stactic in a script **)
1225 datatype appy = (*ExprVal in the sense of denotational semantics*)
1226 Appy of (*applicable stac found, search stalled*)
1227 tac_ * (*tac_ associated (fun assod) with stac*)
1228 scrstate (*after determination of stac WN.18.8.03*)
1229 | Napp of (*stac found was not applicable;
1230 this mode may become Skip in Repeat, Try and Or*)
1231 env (*stack*) (*popped while nxt_up*)
1232 | Skip of (*for restart after Appy, for leaving iterations,
1233 for passing the value of scriptexpressions,
1234 and for finishing the script successfully*)
1235 term * env (*stack*);
1237 (*appy, nxt_up, nstep_up scanning for next_tac.
1238 search is clearly separated into (1)-(2):
1239 (1) appy is recursive descent;
1240 (2) nxt_up resumes interpretation at a location somewhere in the script;
1241 nstep_up does only get to the parentnode of the scriptexpr.
1243 * call of (2) means _always_ that in this branch below
1244 there was an applicable stac (Repeat, Or e1, ...)
1248 datatype appy_ = (*as argument in nxt_up, nstep_up, from appy*)
1249 (* Appy is only (final) returnvalue, not argument during search *)
1250 Napp_ (*ev. detects 'script is not appropriate for this example'*)
1251 | Skip_; (*detects 'script successfully finished'
1252 also used as init-value for resuming; this works,
1253 because 'nxt_up Or e1' treats as Appy*)
1255 fun appy thy ptp E l (t as Const ("HOL.Let",_) $ e $ (Abs (i,T,b))) a v =
1256 (case appy thy ptp E (l@[L,R]) e a v of
1258 let val E' = upd_env E (Free (i,T), res);
1259 in appy thy ptp E' (l@[R,D]) b a v end
1262 | appy (thy as (th,sr)) ptp E l (t as Const ("Script.While"(*1*),_) $ c $ e $ a) _ v =
1263 (if eval_true_ th sr (subst_atomic (upd_env E (a,v)) c)
1264 then appy thy ptp E (l@[L,R]) e (SOME a) v
1267 | appy (thy as (th,sr)) ptp E l (t as Const ("Script.While"(*2*),_) $ c $ e) a v =
1268 (if eval_true_ th sr (subst_atomic (upd_env_opt E (a,v)) c)
1269 then appy thy ptp E (l@[R]) e a v
1272 | appy (thy as (th,sr)) ptp E l (t as Const ("If",_) $ c $ e1 $ e2) a v =
1273 (if eval_true_ th sr (subst_atomic (upd_env_opt E (a,v)) c)
1274 then ((*tracing("### appy If: true");*)appy thy ptp E (l@[L,R]) e1 a v)
1275 else ((*tracing("### appy If: false");*)appy thy ptp E (l@[ R]) e2 a v))
1277 | appy thy ptp E l (Const ("Script.Repeat"(*1*),_) $ e $ a) _ v =
1278 (appy thy ptp E (l@[L,R]) e (SOME a) v)
1280 | appy thy ptp E l (Const ("Script.Repeat"(*2*),_) $ e) a v =
1281 (appy thy ptp E (l@[R]) e a v)
1283 | appy thy ptp E l (t as Const ("Script.Try",_) $ e $ a) _ v =
1284 (case appy thy ptp E (l@[L,R]) e (SOME a) v of
1285 Napp E => (Skip (v, E))
1288 | appy thy ptp E l(t as Const ("Script.Try",_) $ e) a v =
1289 (case appy thy ptp E (l@[R]) e a v of
1290 Napp E => (Skip (v, E))
1293 | appy thy ptp E l (Const ("Script.Or"(*1*),_) $e1 $ e2 $ a) _ v =
1294 (case appy thy ptp E (l@[L,L,R]) e1 (SOME a) v of
1295 Appy lme => Appy lme
1296 | _ => appy thy ptp E (*env*) (l@[L,R]) e2 (SOME a) v)
1298 | appy thy ptp E l (Const ("Script.Or"(*2*),_) $e1 $ e2) a v =
1299 (case appy thy ptp E (l@[L,R]) e1 a v of
1300 Appy lme => Appy lme
1301 | _ => appy thy ptp E (l@[R]) e2 a v)
1303 | appy thy ptp E l (Const ("Script.Seq"(*1*),_) $ e1 $ e2 $ a) _ v =
1304 (case appy thy ptp E (l@[L,L,R]) e1 (SOME a) v of
1305 Skip (v,E) => appy thy ptp E (l@[L,R]) e2 (SOME a) v
1308 | appy thy ptp E l (Const ("Script.Seq",_) $ e1 $ e2) a v =
1309 (case appy thy ptp E (l@[L,R]) e1 a v of
1310 Skip (v,E) => appy thy ptp E (l@[R]) e2 a v
1313 (* a leaf has been found *)
1314 | appy (thy as (th,sr)) (pt, p) E l t a v =
1315 (case handle_leaf "next " th sr E a v t of
1316 (a', Expr s) => Skip (s, E)
1317 | (a', STac stac) =>
1318 let val (m,m') = stac2tac_ pt (assoc_thy th) stac
1321 Subproblem _ => Appy (m', (E,l,a',tac_2res m',Sundef,false))
1323 (case applicable_in p pt m of
1324 Appl m' => (Appy (m', (E,l,a',tac_2res m',Sundef,false)))
1325 | _ => ((*tracing("### appy: Napp");*)Napp E))
1328 fun nxt_up thy ptp (scr as (Prog sc)) E l ay
1329 (t as Const ("HOL.Let",_) $ _) a v = (*comes from let=...*)
1331 then nstep_up thy ptp scr E (drop_last l) Napp_ a v
1334 val up = drop_last l;
1335 val (Const ("HOL.Let",_) $ e $ (Abs (i,T,body))) = go up sc;
1336 val i = mk_Free (i, T);
1337 val E = upd_env E (i, v);
1339 case appy thy ptp E (up@[R,D]) body a v of
1340 Appy lre => Appy lre
1341 | Napp E => nstep_up thy ptp scr E up Napp_ a v
1342 | Skip (v,E) => nstep_up thy ptp scr E up Skip_ a v end)
1344 | nxt_up thy ptp scr E l ay
1345 (t as Abs (_,_,_)) a v =
1346 ((*tracing("### nxt_up Abs: " ^ term2str t);*)
1347 nstep_up thy ptp scr E l ay a v)
1349 | nxt_up thy ptp scr E l ay
1350 (t as Const ("HOL.Let",_) $ e $ (Abs (i,T,b))) a v =
1351 ((*tracing("### nxt_up Let$e$Abs: is=");
1352 tracing(istate2str (ScrState (E,l,a,v,Sundef,false)));*)
1353 (*tracing("### nxt_up Let e Abs: " ^ term2str t);*)
1354 nstep_up thy ptp scr E l ay a v)
1356 (*no appy_: never causes Napp -> Helpless*)
1357 | nxt_up (thy as (th,sr)) ptp scr E l _
1358 (Const ("Script.While"(*1*),_) $ c $ e $ _) a v =
1359 if eval_true_ th sr (subst_atomic (upd_env_opt E (a,v)) c)
1360 then case appy thy ptp E (l@[L,R]) e a v of
1362 | Napp E => nstep_up thy ptp scr E l Skip_ a v
1363 | Skip (v,E) => nstep_up thy ptp scr E l Skip_ a v
1364 else nstep_up thy ptp scr E l Skip_ a v
1366 (*no appy_: never causes Napp - Helpless*)
1367 | nxt_up (thy as (th,sr)) ptp scr E l _
1368 (Const ("Script.While"(*2*),_) $ c $ e) a v =
1369 if eval_true_ th sr (subst_atomic (upd_env_opt E (a,v)) c)
1370 then case appy thy ptp E (l@[R]) e a v of
1372 | Napp E => nstep_up thy ptp scr E l Skip_ a v
1373 | Skip (v,E) => nstep_up thy ptp scr E l Skip_ a v
1374 else nstep_up thy ptp scr E l Skip_ a v
1376 | nxt_up thy ptp scr E l ay (Const ("If",_) $ _ $ _ $ _) a v =
1377 nstep_up thy ptp scr E l ay a v
1379 | nxt_up thy ptp scr E l _ (*no appy_: there was already a stac below*)
1380 (Const ("Script.Repeat"(*1*),T) $ e $ _) a v =
1381 (case appy thy ptp (*upd_env*) E (*a,v)*) ((l@[L,R]):loc_) e a v of
1383 | Napp E => ((*tracing("### nxt_up Repeat a: ");*)
1384 nstep_up thy ptp scr E l Skip_ a v)
1385 | Skip (v,E) => ((*tracing("### nxt_up Repeat: Skip res ="^
1386 (Sign.string_of_term(sign_of (assoc_thy thy)) res'));*)
1387 nstep_up thy ptp scr E l Skip_ a v))
1389 | nxt_up thy ptp scr E l _ (*no appy_: there was already a stac below*)
1390 (Const ("Script.Repeat"(*2*),T) $ e) a v =
1391 (case appy thy ptp (*upd_env*) E (*a,v)*) ((l@[R]):loc_) e a v of
1393 | Napp E => ((*tracing("### nxt_up Repeat a: ");*)
1394 nstep_up thy ptp scr E l Skip_ a v)
1395 | Skip (v,E) => ((*tracing("### nxt_up Repeat: Skip res ="^
1396 (Sign.string_of_term(sign_of (assoc_thy thy)) res'));*)
1397 nstep_up thy ptp scr E l Skip_ a v))
1399 | nxt_up thy ptp scr E l _ (*makes Napp to Skip*)
1400 (t as Const ("Script.Try",_) $ e $ _) a v =
1401 ((*tracing("### nxt_up Try " ^ term2str t);*)
1402 nstep_up thy ptp scr E l Skip_ a v )
1404 | nxt_up thy ptp scr E l _ (*makes Napp to Skip*)
1405 (t as Const ("Script.Try"(*2*),_) $ e) a v =
1406 ((*tracing("### nxt_up Try " ^ term2str t);*)
1407 nstep_up thy ptp scr E l Skip_ a v)
1410 | nxt_up thy ptp scr E l ay
1411 (Const ("Script.Or",_) $ _ $ _ $ _) a v = nstep_up thy ptp scr E l ay a v
1413 | nxt_up thy ptp scr E l ay
1414 (Const ("Script.Or",_) $ _ $ _) a v = nstep_up thy ptp scr E l ay a v
1416 | nxt_up thy ptp scr E l ay
1417 (Const ("Script.Or",_) $ _ ) a v =
1418 nstep_up thy ptp scr E (drop_last l) ay a v
1420 | nxt_up thy ptp scr E l ay (*all has been done in (*2*) below*)
1421 (Const ("Script.Seq"(*1*),_) $ _ $ _ $ _) a v =
1422 nstep_up thy ptp scr E l ay a v
1424 | nxt_up thy ptp scr E l ay (*comes from e2*)
1425 (Const ("Script.Seq"(*2*),_) $ _ $ e2) a v =
1426 nstep_up thy ptp scr E l ay a v
1428 | nxt_up thy ptp (scr as Prog sc) E l ay (*comes from e1*)
1429 (Const ("Script.Seq",_) $ _) a v =
1431 then nstep_up thy ptp scr E (drop_last l) Napp_ a v
1433 let val up = drop_last l;
1434 val Const ("Script.Seq"(*2*),_) $ _ $ e2 = go up sc;
1435 in case appy thy ptp E (up@[R]) e2 a v of
1437 | Napp E => nstep_up thy ptp scr E up Napp_ a v
1438 | Skip (v,E) => nstep_up thy ptp scr E up Skip_ a v end
1440 | nxt_up (thy,_) ptp scr E l ay t a v = error ("nxt_up not impl for " ^ term2str t)
1442 and nstep_up thy ptp (Prog sc) E l ay a v =
1445 let val up = drop_last l;
1446 in (nxt_up thy ptp (Prog sc) E up ay (go up sc) a v ) end
1447 else (*interpreted to end*)
1448 if ay = Skip_ then Skip (v, E) else Napp E
1451 (* decide for the next applicable stac in the script;
1452 returns (stactic, value) - the value in case the script is finished
1453 12.8.02: ~~~~~ and no assumptions ??? FIXME ???
1454 20.8.02: must return p in case of finished, because the next script
1455 consulted need not be the calling script:
1456 in case of detail ie. _inserted_ PrfObjs, the next stac
1457 has to searched in a script with PblObj.status<>Complete !
1458 (.. not true for other details ..PrfObj ??????????????????
1459 20.8.02: do NOT return safe (is only changed in locate !!!)
1461 fun next_tac (thy,_) (pt,p) (Rfuns {next_rule,...}) (RrlsState(f,f',rss,_), ctxt) =
1463 then (End_Detail' (f',[])(*8.6.03*), (Uistate, ctxt),
1464 (f', Sundef(*FIXME is no value of next_tac! vor 8.6.03*))) (*finished*)
1466 (case next_rule rss f of
1467 NONE => (Empty_Tac_, (Uistate, ctxt), (e_term, Sundef)) (*helpless*)
1468 | SOME (Thm (id,thm))(*8.6.03: muss auch f' liefern ?!!*) =>
1469 (Rewrite' (thy, "e_rew_ord", e_rls,(*!?!8.6.03*) false,
1470 thm, f, (e_term, [(*!?!8.6.03*)])),
1471 (Uistate, ctxt), (e_term, Sundef))) (*next stac*)
1473 | next_tac thy (ptp as (pt, pos as (p, _)):ptree * pos') (sc as Prog (h $ body))
1474 (ScrState (E,l,a,v,s,b), ctxt) =
1475 (case if l = [] then appy thy ptp E [R] body NONE v
1476 else nstep_up thy ptp sc E l Skip_ a v of
1477 Skip (v, _) => (*finished*)
1478 (case par_pbl_det pt p of
1481 val (_,pblID,_) = get_obj g_spec pt p';
1482 in (Check_Postcond' (pblID, (v, [(*assigned in next step*)])),
1483 (e_istate, ctxt), (v,s))
1485 | (_, p', rls') => (End_Detail' (e_term,[])(*8.6.03*), (e_istate, ctxt), (v,s)))
1486 | Napp _ => (Empty_Tac_, (e_istate, ctxt), (e_term, Sundef)) (*helpless*)
1487 | Appy (m', scrst as (_,_,_,v,_,_)) => (m', (ScrState scrst, ctxt), (v, Sundef))) (*next stac*)
1489 | next_tac _ _ _ (is, _) = error ("next_tac: not impl for " ^ (istate2str is));
1492 (*.create the initial interpreter state from the items of the guard.*)
1493 val errmsg = "ERROR: found no actual arguments for prog. of "
1494 fun init_scrstate thy itms metID =
1496 val actuals = itms2args thy metID itms
1497 val _ = if actuals <> [] then () else raise ERROR (errmsg ^ strs2str' metID)
1498 val scr as Prog sc = (#scr o get_met) metID
1499 val formals = formal_args sc
1500 (*expects same sequence of (actual) args in itms and (formal) args in met*)
1501 fun relate_args env [] [] = env
1502 | relate_args env _ [] =
1503 error ("ERROR in creating the environment for '" ^
1504 id_of_scr sc ^ "' from \nthe items of the guard of " ^
1505 metID2str metID ^ ",\n" ^
1506 "formal arg(s), from the script, miss actual arg(s), from the guards env:\n" ^
1507 (string_of_int o length) formals ^
1508 " formals: " ^ terms2str formals ^ "\n" ^
1509 (string_of_int o length) actuals ^
1510 " actuals: " ^ terms2str actuals)
1511 | relate_args env [] actual_finds = env (*may drop Find!*)
1512 | relate_args env (a::aa) (f::ff) =
1513 if type_of a = type_of f
1514 then relate_args (env @ [(a, f)]) aa ff
1516 error ("ERROR in creating the environment for '" ^
1517 id_of_scr sc ^ "' from \nthe items of the guard of " ^
1518 metID2str metID ^ ",\n" ^
1519 "different types of formal arg, from the script, " ^
1520 "and actual arg, from the guards env:'\n" ^
1521 "formal: '" ^ term2str a ^ "::" ^ (type2str o type_of) a ^ "'\n" ^
1522 "actual: '" ^ term2str f ^ "::" ^ (type2str o type_of) f ^ "'\n" ^
1524 "formals: " ^ terms2str formals ^ "\n" ^
1525 "actuals: " ^ terms2str actuals)
1526 val env = relate_args [] formals actuals;
1527 val ctxt = Proof_Context.init_global thy |> declare_constraints' actuals
1528 val {pre, prls, ...} = get_met metID;
1529 val pres = check_preconds thy prls pre itms |> map snd;
1530 val ctxt = ctxt |> insert_assumptions pres;
1531 in (ScrState (env,[],NONE,e_term,Safe,true), ctxt, scr):istate * Proof.context * scr end;
1533 (* decide, where to get script/istate from:
1534 (*1*) from PblObj.env: at begin of script if no init_form
1535 (*2*) from PblObj/PrfObj: if stac is in the middle of the script
1536 (*3*) from rls/PrfObj: in case of detail a ruleset *)
1537 fun from_pblobj_or_detail' thy' (p,p_) pt =
1538 let val ctxt = get_ctxt pt (p,p_)
1540 if member op = [Pbl,Met] p_
1541 then case get_obj g_env pt p of
1542 NONE => error "from_pblobj_or_detail': no istate"
1545 val metID = get_obj g_metID pt p
1546 val {srls,...} = get_met metID
1547 in (srls, is, (#scr o get_met) metID) end
1549 let val (pbl,p',rls') = par_pbl_det pt p
1553 val thy = assoc_thy thy'
1554 val PblObj{meth=itms,...} = get_obj I pt p'
1555 val metID = get_obj g_metID pt p'
1556 val {srls,...} = get_met metID
1557 in (*if last_elem p = 0 nothing written to pt yet*)
1558 (srls, get_loc pt (p,p_), (#scr o get_met) metID)
1561 (e_rls, (*FIXME.WN0?: get from pbl or met !!! unused for Rrls in locate_gen, next_tac*)
1564 Rls {scr=scr,...} => scr
1565 | Seq {scr=scr,...} => scr
1566 | Rrls {scr=rfuns,...} => rfuns)
1570 (*.get script and istate from PblObj, see (*1*) above.*)
1571 fun from_pblobj' thy' (p,p_) pt =
1573 val p' = par_pblobj pt p
1574 val thy = assoc_thy thy'
1575 val PblObj {meth=itms, ...} = get_obj I pt p'
1576 val metID = get_obj g_metID pt p'
1577 val {srls,scr,...} = get_met metID
1579 if last_elem p = 0 (*nothing written to pt yet*)
1581 let val (is, ctxt, scr) = init_scrstate thy itms metID
1582 in (srls, (is, ctxt), scr) end
1583 else (srls, get_loc pt (p,p_), scr)
1586 (*.get the stactics and problems of a script as tacs
1587 instantiated with the current environment;
1588 l is the location which generated the given formula.*)
1589 (*WN.12.5.03: quick-and-dirty repair for listexpressions*)
1590 fun is_spec_pos Pbl = true
1591 | is_spec_pos Met = true
1592 | is_spec_pos _ = false;
1594 (*. fetch _all_ tactics from script .*)
1595 fun sel_rules _ (([],Res):pos') =
1596 raise PTREE "no tactics applicable at the end of a calculation"
1597 | sel_rules pt (p,p_) =
1599 then [get_obj g_tac pt p]
1601 let val pp = par_pblobj pt p;
1602 val thy' = (get_obj g_domID pt pp):theory';
1603 val thy = assoc_thy thy';
1604 val metID = get_obj g_metID pt pp;
1605 val metID' =if metID =e_metID then(thd3 o snd3)(get_obj g_origin pt pp)
1607 val {scr = Prog sc,srls,...} = get_met metID'
1608 val ScrState (env,_,a,v,_,_) = get_istate pt (p,p_);
1609 in map ((stac2tac pt thy) o rep_stacexpr o #2 o
1610 (handle_leaf "selrul" thy' srls env a v)) (stacpbls sc) end;
1612 (*. fetch tactics from script and filter _applicable_ tactics;
1613 in case of Rewrite_Set* go down to _atomic_ rewrite-tactics .*)
1614 fun sel_appl_atomic_tacs _ (([],Res):pos') =
1615 raise PTREE "no tactics applicable at the end of a calculation"
1616 | sel_appl_atomic_tacs pt (p,p_) =
1618 then [get_obj g_tac pt p]
1621 val pp = par_pblobj pt p
1622 val thy' = (get_obj g_domID pt pp):theory'
1623 val thy = assoc_thy thy'
1624 val metID = get_obj g_metID pt pp
1627 then (thd3 o snd3) (get_obj g_origin pt pp)
1629 val {scr = Prog sc,srls,erls,rew_ord'=ro,...} = get_met metID'
1630 val ScrState (env,_,a,v,_,_) = get_istate pt (p,p_)
1631 val alltacs = (*we expect at least 1 stac in a script*)
1632 map ((stac2tac pt thy) o rep_stacexpr o #2 o
1633 (handle_leaf "selrul" thy' srls env a v)) (stacpbls sc)
1636 Frm => get_obj g_form pt p
1637 | Res => (fst o (get_obj g_result pt)) p
1638 (*WN071231 ? replace atomic_appl_tacs with applicable_in (ineff!) ?*)
1639 in (distinct o flat o (map (atomic_appl_tacs thy ro erls f))) alltacs end;
1647 (* use"ME/script.sml";