1 (* interpreter for scripts
2 (c) Walther Neuper 2000
7 signature INTERPRETER =
9 (*type ets (list of executed tactics) see sequent.sml*)
13 | Steps of (tac_ * mout * ptree * pos' * cid * safe (* ets*)) list
14 (* | ToDo of ets 28.4.02*)
16 (*diss: next-tactic-function*)
17 val next_tac : theory' -> ptree * pos' -> metID -> scr -> ets -> tac_
18 (*diss: locate-function*)
19 val locate_gen : theory'
21 -> ptree * pos' -> scr * rls -> ets -> loc_ -> locate
23 val sel_rules : ptree -> pos' -> tac list
24 val init_form : scr -> ets -> loc_ * term option (*FIXME not up to date*)
25 val formal_args : term -> term list
27 (*shift to library ...*)
28 val inst_abs : theory' -> term -> term
29 val itms2args : metID -> itm list -> term list
30 val user_interrupt : loc_ * (tac_ * env * env * term * term * safe)
38 structure Interpreter : INTERPRETER =
42 (*.traces the leaves (ie. non-tactical nodes) of the script
44 a leaf is either a tactic or an 'exp' in 'let v = expr'
45 where 'exp' does not contain a tactic.*)
46 val trace_script = ref false;
48 type step = (*data for creating a new node in the ptree;
50 fun ass* scrstate steps =
51 ... case ass* scrstate steps of
52 Assoc (scrstate, steps) => ... ass* scrstate steps*)
53 tac_ (*transformed from associated tac*)
54 * mout (*result with indentation etc.*)
55 * ptree (*containing node created by tac_ + resp. scrstate*)
56 * pos' (*position in ptree; ptree * pos' is the proofstate*)
57 * pos' list; (*of ptree-nodes probably cut (by fst tac_)*)
58 val e_step = (Empty_Tac_, EmptyMout, EmptyPtree, e_pos',[]:pos' list):step;
60 fun rule2thm' (Thm (id, thm)) = (id, string_of_thmI thm):thm'
61 | rule2thm' r = raise error ("rule2thm': not defined for "^(rule2str r));
62 fun rule2rls' (Rls_ rls) = id_rls rls
63 | rule2rls' r = raise error ("rule2rls': not defined for "^(rule2str r));
65 (*.makes a (rule,term) list to a Step (m, mout, pt', p', cid) for solve;
66 complicated with current t in rrlsstate.*)
67 fun rts2steps steps ((pt,p),(f,f'',rss,rts),(thy',ro,er,pa)) [(r, (f', am))] =
68 let val thy = assoc_thy thy'
69 val m = Rewrite' (thy',ro,er,pa, rule2thm' r, f, (f', am))
70 val is = RrlsState (f',f'',rss,rts)
71 val p = case p of (p',Frm) => p | (p',Res) => (lev_on p',Res)
72 val (p', cid, mout, pt') = generate1 thy m is p pt
73 in (is, (m, mout, pt', p', cid)::steps) end
74 | rts2steps steps ((pt,p),(f,f'',rss,rts),(thy',ro,er,pa))
75 ((r, (f', am))::rts') =
76 let val thy = assoc_thy thy'
77 val m = Rewrite' (thy',ro,er,pa, rule2thm' r, f, (f', am))
78 val is = RrlsState (f',f'',rss,rts)
79 val p = case p of (p',Frm) => p | (p',Res) => (lev_on p',Res)
80 val (p', cid, mout, pt') = generate1 thy m is p pt
81 in rts2steps ((m, mout, pt', p', cid)::steps)
82 ((pt',p'),(f',f'',rss,rts),(thy',ro,er,pa)) rts' end;
85 (*. functions for the environment stack .*)
86 fun accessenv id es = the (assoc((top es):env, id))
87 handle _ => error ("accessenv: "^(free2str id)^" not in env");
88 fun updateenv id vl (es:env stack) =
89 (push (overwrite(top es, (id, vl))) (pop es)):env stack;
90 fun pushenv id vl (es:env stack) =
91 (push (overwrite(top es, (id, vl))) es):env stack;
92 val popenv = pop:env stack -> env stack;
96 fun de_esc_underscore str =
98 | scan (s::ss) = if s = "'" then (scan ss)
100 in (implode o scan o explode) str end;
102 > val str = "Rewrite_Set_Inst";
103 > val esc = esc_underscore str;
104 val it = "Rewrite'_Set'_Inst" : string
105 > val des = de_esc_underscore esc;
106 val des = de_esc_underscore esc;*)
108 (*go at a location in a script and fetch the contents*)
110 | go (D::p) (Abs(s,ty,t0)) = go (p:loc_) t0
111 | go (L::p) (t1 $ t2) = go p t1
112 | go (R::p) (t1 $ t2) = go p t2
113 | go l _ = raise error ("go: no "^(loc_2str l));
115 > val t = (term_of o the o (parse thy)) "a+b";
116 val it = Const (#,#) $ Free (#,#) $ Free ("b","RealDef.real") : term
117 > val plus_a = go [L] t;
119 > val plus = go [L,L] t;
120 > val a = go [L,R] t;
122 > val t = (term_of o the o (parse thy)) "a+b+c";
123 val t = Const (#,#) $ (# $ # $ Free #) $ Free ("c","RealDef.real") : term
124 > val pl_pl_a_b = go [L] t;
126 > val a = go [L,R,L,R] t;
127 > val b = go [L,R,R] t;
131 (* get a subterm t with test t, and record location *)
132 fun get l test (t as Const (s,T)) =
133 if test t then SOME (l,t) else NONE
134 | get l test (t as Free (s,T)) =
135 if test t then SOME (l,t) else NONE
136 | get l test (t as Bound n) =
137 if test t then SOME (l,t) else NONE
138 | get l test (t as Var (s,T)) =
139 if test t then SOME (l,t) else NONE
140 | get l test (t as Abs (s,T,body)) =
141 if test t then SOME (l:loc_,t) else get ((l@[D]):loc_) test body
142 | get l test (t as t1 $ t2) =
143 if test t then SOME (l,t)
144 else case get (l@[L]) test t1 of
145 NONE => get (l@[R]) test t2
146 | SOME (l',t') => SOME (l',t');
148 > val sss = ((term_of o the o (parse thy))
149 "Script Solve_root_equation (eq_::bool) (v_::real) (err_::bool) =\
150 \ (let e_ = Try (Rewrite square_equation_left True eq_) \
152 ______ compares head_of !!
153 > get [] (eq_str "Let") sss; [R]
154 > get [] (eq_str "Script.Try") sss; [R,L,R]
155 > get [] (eq_str "Script.Rewrite") sss; [R,L,R,R]
156 > get [] (eq_str "True") sss; [R,L,R,R,L,R]
157 > get [] (eq_str "e_") sss; [R,R]
160 fun test_negotiable t =
161 member op = (!negotiable)
162 ((strip_thy o (term_str (theory "Script")) o head_of) t);
164 (*.get argument of first stactic in a script for init_form.*)
165 fun get_stac thy (h $ body) =
169 fun get_t y (Const ("Script.Seq",_) $ e1 $ e2) a =
170 (case get_t y e1 a of NONE => get_t y e2 a | la => la)
171 | get_t y (Const ("Script.Seq",_) $ e1 $ e2 $ a) _ =
172 (case get_t y e1 a of NONE => get_t y e2 a | la => la)
173 | get_t y (Const ("Script.Try",_) $ e) a = get_t y e a
174 | get_t y (Const ("Script.Try",_) $ e $ a) _ = get_t y e a
175 | get_t y (Const ("Script.Repeat",_) $ e) a = get_t y e a
176 | get_t y (Const ("Script.Repeat",_) $ e $ a) _ = get_t y e a
177 | get_t y (Const ("Script.Or",_) $e1 $ e2) a =
178 (case get_t y e1 a of NONE => get_t y e2 a | la => la)
179 | get_t y (Const ("Script.Or",_) $e1 $ e2 $ a) _ =
180 (case get_t y e1 a of NONE => get_t y e2 a | la => la)
181 | get_t y (Const ("Script.While",_) $ c $ e) a = get_t y e a
182 | get_t y (Const ("Script.While",_) $ c $ e $ a) _ = get_t y e a
183 | get_t y (Const ("Script.Letpar",_) $ e1 $ Abs (_,_,e2)) a =
184 (case get_t y e1 a of NONE => get_t y e2 a | la => la)
185 (*| get_t y (Const ("Let",_) $ e1 $ Abs (_,_,e2)) a =
186 (writeln("get_t: Let e1= "^(term2str e1)^", e2= "^(term2str e2));
187 case get_t y e1 a of NONE => get_t y e2 a | la => la)
188 | get_t y (Abs (_,_,e)) a = get_t y e a*)
189 | get_t y (Const ("Let",_) $ e1 $ Abs (_,_,e2)) a =
190 get_t y e1 a (*don't go deeper without evaluation !*)
191 | get_t y (Const ("If",_) $ c $ e1 $ e2) a = NONE
192 (*(case get_t y e1 a of NONE => get_t y e2 a | la => la)*)
194 | get_t y (Const ("Script.Rewrite",_) $ _ $ _ $ a) _ = SOME a
195 | get_t y (Const ("Script.Rewrite",_) $ _ $ _ ) a = SOME a
196 | get_t y (Const ("Script.Rewrite'_Inst",_) $ _ $ _ $ _ $ a) _ = SOME a
197 | get_t y (Const ("Script.Rewrite'_Inst",_) $ _ $ _ $ _ ) a = SOME a
198 | get_t y (Const ("Script.Rewrite'_Set",_) $ _ $ _ $ a) _ = SOME a
199 | get_t y (Const ("Script.Rewrite'_Set",_) $ _ $ _ ) a = SOME a
200 | get_t y (Const ("Script.Rewrite'_Set'_Inst",_) $ _ $ _ $ _ $a)_ =SOME a
201 | get_t y (Const ("Script.Rewrite'_Set'_Inst",_) $ _ $ _ $ _ ) a =SOME a
202 | get_t y (Const ("Script.Calculate",_) $ _ $ a) _ = SOME a
203 | get_t y (Const ("Script.Calculate",_) $ _ ) a = SOME a
205 | get_t y (Const ("Script.Substitute",_) $ _ $ a) _ = SOME a
206 | get_t y (Const ("Script.Substitute",_) $ _ ) a = SOME a
208 | get_t y (Const ("Script.SubProblem",_) $ _ $ _) _ = NONE
211 ((*writeln ("### get_t yac: list-expr "^(term2str x));*)
213 in get_t thy body e_term end;
215 (*FIXME: get 1st stac by next_stac [] instead of ... ?? 29.7.02*)
216 (* val Script sc = scr;
218 fun init_form thy (Script sc) env =
219 (case get_stac thy sc of
220 NONE => NONE (*raise error ("init_form: no 1st stac in "^
221 (Syntax.string_of_term (thy2ctxt thy) sc))*)
222 | SOME stac => SOME (subst_atomic env stac))
223 | init_form _ _ _ = raise error "init_form: no match";
225 (* use"ME/script.sml";
231 (*the 'iteration-argument' of a stac (args not eval)*)
232 fun itr_arg _ (Const ("Script.Rewrite'_Inst",_) $ _ $ _ $ _ $ v) = v
233 | itr_arg _ (Const ("Script.Rewrite",_) $ _ $ _ $ v) = v
234 | itr_arg _ (Const ("Script.Rewrite'_Set'_Inst",_) $ _ $ _ $ _ $ v) = v
235 | itr_arg _ (Const ("Script.Rewrite'_Set",_) $ _ $ _ $ v) = v
236 | itr_arg _ (Const ("Script.Calculate",_) $ _ $ v) = v
237 | itr_arg _ (Const ("Script.Check'_elementwise",_) $ consts $ _) = consts
238 | itr_arg _ (Const ("Script.Or'_to'_List",_) $ _) = e_term
239 | itr_arg _ (Const ("Script.Tac",_) $ _) = e_term
240 | itr_arg _ (Const ("Script.SubProblem",_) $ _ $ _) = e_term
241 | itr_arg thy t = raise error
242 ("itr_arg not impl. for "^
243 (Syntax.string_of_term (thy2ctxt (assoc_thy thy)) t));
244 (* val t = (term_of o the o (parse thy))"Rewrite rroot_square_inv False e_";
245 > itr_arg "Script.thy" t;
246 val it = Free ("e_","RealDef.real") : term
247 > val t = (term_of o the o (parse thy))"xxx";
248 > itr_arg "Script.thy" t;
249 *** itr_arg not impl. for xxx
250 uncaught exception ERROR
251 raised at: library.ML:1114.35-1114.40*)
254 (*.get the arguments of the script out of the scripts parsetree.*)
255 fun formal_args scr = (fst o split_last o snd o strip_comb) scr;
258 [Free ("f_","RealDef.real"),Free ("v_","RealDef.real"),
259 Free ("eqs_","bool List.list")] : term list
262 (*.get the identifier of the script out of the scripts parsetree.*)
263 fun id_of_scr sc = (id_of o fst o strip_comb) sc;
266 (*WN020526: not clear, when a is available in ass_up for eva-_true*)
267 (*WN060906: in "fun handle_leaf" eg. uses "SOME M__"(from some PREVIOUS
268 curried Rewrite) for CURRENT value (which may be different from PREVIOUS);
269 thus "NONE" must be set at the end of currying (ill designed anyway)*)
270 fun upd_env_opt env (SOME a, v) = upd_env env (a,v)
271 | upd_env_opt env (NONE, v) =
272 (writeln("*** upd_env_opt: (NONE,"^(term2str v)^")");env);
275 type dsc = typ; (*<-> nam..unknow in Descript.thy*)
276 fun typ_str (Type (s,_)) = s
277 | typ_str (TFree(s,_)) = s
278 | typ_str (TVar ((s,i),_)) = s^(string_of_int i);
280 (*get the _result_-type of a description*)
281 fun dsc_valT (Const (_,(Type (_,[_,T])))) = (strip_thy o typ_str) T;
282 (*> val t = (term_of o the o (parse thy)) "equality";
284 val T = "bool => Tools.una" : typ
285 > val dsc = dsc_valT t;
286 val dsc = "una" : string
288 > val t = (term_of o the o (parse thy)) "fixedValues";
290 val T = "bool List.list => Tools.nam" : typ
291 > val dsc = dsc_valT t;
292 val dsc = "nam" : string*)
294 (*.from penv in itm_ make args for script depending on type of description.*)
295 (*6.5.03 TODO: push penv into script -- and drop mk_arg here || drop penv
296 9.5.03 penv postponed: penv = env for script at the moment, (*mk_arg*)*)
297 fun mk_arg thy d [] = raise error ("mk_arg: no data for "^
298 (Syntax.string_of_term (thy2ctxt thy) d))
304 r as (Const ("op =",_) $ _ $ _) => r
306 ("mk_arg: dsc-typ 'nam' applied to non-equality "^
307 (Syntax.string_of_term (thy2ctxt thy) t))]
308 | s => raise error ("mk_arg: not impl. for "^s))
310 | mk_arg thy d (t::ts) = (mk_arg thy d [t]) @ (mk_arg thy d ts);
313 val [t] = ts_in itm_;
320 (*.create the actual parameters (args) of script: their order
321 is given by the order in met.pat .*)
322 (*WN.5.5.03: ?: does this allow for different descriptions ???
323 ?: why not taken from formal args of script ???
324 !: FIXXXME penv: push it here in itms2args into script-evaluation*)
325 (* val (thy, mI, itms) = (thy, metID, itms);
327 fun itms2args thy mI (itms:itm list) =
328 let val mvat = max_vt itms
329 fun okv mvat (_,vats,b,_,_) = member op = vats mvat andalso b
330 val itms = filter (okv mvat) itms
331 fun test_dsc d (_,_,_,_,itm_) = (d = d_in itm_)
332 fun itm2arg itms (_,(d,_)) =
333 case find_first (test_dsc d) itms of
335 raise error ("itms2args: '"^term2str d^"' not in itms")
336 (*| SOME (_,_,_,_,itm_) => mk_arg thy (d_in itm_) (ts_in itm_);
337 penv postponed; presently penv holds already env for script*)
338 | SOME (_,_,_,_,itm_) => penvval_in itm_
339 fun sel_given_find (s,_) = (s = "#Given") orelse (s = "#Find")
340 val pats = (#ppc o get_met) mI
341 in (flat o (map (itm2arg itms))) pats end;
343 > val sc = ... Solve_root_equation ...
344 > val mI = ("Script.thy","sqrt-equ-test");
345 > val PblObj{meth={ppc=itms,...},...} = get_obj I pt [];
346 > val ts = itms2args thy mI itms;
347 > map (Syntax.string_of_term (thy2ctxt thy)) ts;
348 ["sqrt (#9 + #4 * x) = sqrt x + sqrt (#5 + x)","x","#0"] : string list
352 (*["bool_ (1+x=2)","real_ x"] --match_ags--> oris
353 --oris2fmz_vals--> ["equality (1+x=2)","boundVariable x","solutions L"]*)
354 fun oris2fmz_vals oris =
355 let fun ori2fmz_vals ((_,_,_,dsc,ts):ori) =
356 ((term2str o comp_dts') (dsc, ts), last_elem ts)
357 handle _ => raise error ("ori2fmz_env called with "^terms2str ts)
358 in (split_list o (map ori2fmz_vals)) oris end;
360 (*detour necessary, because generate1 delivers a string-result*)
361 fun mout2term thy (Form' (FormKF (_,_,_,_,res))) =
362 (term_of o the o (parse (assoc_thy thy))) res
363 | mout2term thy (Form' (PpcKF _)) = e_term;(*3.8.01: res of subpbl
364 at time of detection in script*)
366 (*.convert a script-tac 'stac' to a tactic 'tac'; if stac is an initac,
367 then convert to a 'tac_' (as required in appy).
368 arg pt:ptree for pushing the thy specified in rootpbl into subpbls.*)
369 fun stac2tac_ pt thy (Const ("Script.Rewrite",_) $ Free (thmID,_) $ _ $ f) =
370 (* val (pt, thy, (Const ("Script.Rewrite",_) $ Free (thmID,_) $ _ $ f)) =
371 (pt, (assoc_thy th), stac);
373 let val tid = (de_esc_underscore o strip_thy) thmID
374 in (Rewrite (tid, (string_of_thmI o
375 (assoc_thm' thy)) (tid,"")), Empty_Tac_) end
377 mm as(Const ("Script.Rewrite'_Inst",_) $ sub $ Free(thmID,_) $ _ $ f))
378 = (assoc_thy th,stac);
381 assoc_thm' (assoc_thy "Isac.thy") (tid,"");
382 assoc_thm' Isac.thy (tid,"");
384 | stac2tac_ pt thy (Const ("Script.Rewrite'_Inst",_) $
385 sub $ Free (thmID,_) $ _ $ f) =
386 let val subML = ((map isapair2pair) o isalist2list) sub
387 val subStr = subst2subs subML
388 val tid = (de_esc_underscore o strip_thy) thmID (*4.10.02 unnoetig*)
390 (subStr, (tid, (string_of_thmI o
391 (assoc_thm' thy)) (tid,""))), Empty_Tac_) end
393 | stac2tac_ pt thy (Const ("Script.Rewrite'_Set",_) $ Free (rls,_) $ _ $ f)=
394 (Rewrite_Set ((de_esc_underscore o strip_thy) rls), Empty_Tac_)
396 | stac2tac_ pt thy (Const ("Script.Rewrite'_Set'_Inst",_) $
397 sub $ Free (rls,_) $ _ $ f) =
398 let val subML = ((map isapair2pair) o isalist2list) sub;
399 val subStr = subst2subs subML;
400 in (Rewrite_Set_Inst (subStr,rls), Empty_Tac_) end
402 | stac2tac_ pt thy (Const ("Script.Calculate",_) $ Free (op_,_) $ f) =
403 (Calculate op_, Empty_Tac_)
405 | stac2tac_ pt thy (Const ("Script.Take",_) $ t) =
406 (Take (term2str t), Empty_Tac_)
408 | stac2tac_ pt thy (Const ("Script.Substitute",_) $ isasub $ arg) =
409 (Substitute ((subte2sube o isalist2list) isasub), Empty_Tac_)
410 (* val t = str2term"Substitute [x = L, M_b L = 0] (M_b x = q_0 * x + c)";
411 val Const ("Script.Substitute", _) $ isasub $ arg = t;
415 | stac2tac_ pt thy (Const("Script.Check'_elementwise",_) $ _ $
416 (set as Const ("Collect",_) $ Abs (_,_,pred))) =
417 (Check_elementwise (Syntax.string_of_term (thy2ctxt thy) pred),
420 | stac2tac_ pt thy (Const("Script.Or'_to'_List",_) $ _ ) =
421 (Or_to_List, Empty_Tac_)
423 (*12.1.01.for subproblem_equation_dummy in root-equation *)
424 | stac2tac_ pt thy (Const ("Script.Tac",_) $ Free (str,_)) =
425 (Tac ((de_esc_underscore o strip_thy) str), Empty_Tac_)
426 (*L_ will come from pt in appl_in*)
428 (*3.12.03 copied from assod SubProblem*)
429 (* val Const ("Script.SubProblem",_) $
432 (Const ("Pair",_) $ pI' $ mI')) $ ags' =
434 "SubProblem (EqSystem_, [linear, system], [no_met])\
435 \ [bool_list_ [c_2 = 0, L * c + c_2 = q_0 * L ^^^ 2 / 2],\
436 \ real_list_ [c, c_2]]";
438 | stac2tac_ pt thy (stac as Const ("Script.SubProblem",_) $
441 (Const ("Pair",_) $ pI' $ mI')) $ ags') =
442 (*compare "| assod _ (Subproblem'"*)
443 let val dI = ((implode o drop_last(*.._*) o explode) dI')^".thy";
444 val thy = maxthy (assoc_thy dI) (rootthy pt);
445 val pI = ((map (de_esc_underscore o free2str)) o isalist2list) pI';
446 val mI = ((map (de_esc_underscore o free2str)) o isalist2list) mI';
447 val ags = isalist2list ags';
450 then let val pors = (match_ags thy ((#ppc o get_pbt) pI) ags)
451 handle _ =>(match_ags_msg pI stac ags(*raise exn*);[])
452 val pI' = refine_ori' pors pI;
453 in (pI', pors (*refinement over models with diff.prec only*),
454 (hd o #met o get_pbt) pI') end
455 else (pI, (match_ags thy ((#ppc o get_pbt) pI) ags)
456 handle _ => (match_ags_msg pI stac ags(*raise exn*); []),
458 val (fmz_, vals) = oris2fmz_vals pors;
459 val {cas,ppc,thy,...} = get_pbt pI
460 val dI = theory2theory' thy (*.take dI from _refined_ pbl.*)
461 val dI = theory2theory' (maxthy (assoc_thy dI) (rootthy pt));
462 val hdl = case cas of
463 NONE => pblterm dI pI
464 | SOME t => subst_atomic ((vars_of_pbl_' ppc) ~~~ vals) t
465 val f = subpbl (strip_thy dI) pI
466 in (Subproblem (dI, pI),
467 Subproblem' ((dI, pI, mI), pors, hdl, fmz_, f))
470 | stac2tac_ pt thy t = raise error
471 ("stac2tac_ TODO: no match for "^
472 (Syntax.string_of_term (thy2ctxt thy) t));
474 > val t = (term_of o the o (parse thy))
475 "Rewrite_Set_Inst [(bdv,v_::real)] isolate_bdv False (x=a+#1)";
477 val it = Rewrite_Set_Inst ([(#,#)],"isolate_bdv") : tac
479 > val t = (term_of o the o (parse SqRoot.thy))
480 "(SubProblem (SqRoot_,[equation,univariate],(SqRoot_,solve_linear))\
481 \ [bool_ e_, real_ v_])::bool list";
482 > stac2tac_ pt SqRoot.thy t;
483 val it = (Subproblem ("SqRoot.thy",[#,#]),Const (#,#) $ (# $ # $ (# $ #)))
486 fun stac2tac pt thy t = (fst o stac2tac_ pt thy) t;
491 (*test a term for being a _list_ (set ?) of constants; could be more rigorous*)
492 fun list_of_consts (Const ("List.list.Cons",_) $ _ $ _) = true
493 | list_of_consts (Const ("List.list.Nil",_)) = true
494 | list_of_consts _ = false;
495 (*val ttt = (term_of o the o (parse thy)) "[x=#1,x=#2,x=#3]";
496 > list_of_consts ttt;
498 > val ttt = (term_of o the o (parse thy)) "[]";
499 > list_of_consts ttt;
500 val it = true : bool*)
506 (* 15.1.01: evaluation of preds only works occasionally,
507 but luckily for the 2 examples of root-equ:
508 > val s = ((term_of o the o (parse thy)) "x",
509 (term_of o the o (parse thy)) "-#5//#12");
510 > val asm = (term_of o the o (parse thy))
511 "#0 <= #9 + #4 * x & #0 <= sqrt x + sqrt (#-3 + x)";
512 > val pred = subst_atomic [s] asm;
513 > rewrite_set_ thy false ((cterm_of thy) pred);
514 val it = NONE : (cterm * cterm list) option !!!!!!!!!!!!!!!!!!!!!!!!!!!!
515 > eval_true' (string_of_thy thy) "eval_rls" (subst_atomic [s] pred);
516 val it = false : bool
518 > val s = ((term_of o the o (parse thy)) "x",
519 (term_of o the o (parse thy)) "#4");
520 > val asm = (term_of o the o (parse thy))
521 "#0 <= #9 + #4 * x & #0 <= sqrt x + sqrt (#5 + x)";
522 > val pred = subst_atomic [s] asm;
523 > rewrite_set_ thy false ((cterm_of thy) pred);
524 val it = SOME ("True & True",[]) : (cterm * cterm list) option
525 > eval_true' (string_of_thy thy) "eval_rls" (subst_atomic [s] pred);
526 val it = true : bool`*)
528 (*for check_elementwise: take apart the set, ev. instantiate assumptions
529 fun rep_set thy pt p (set as Const ("Collect",_) $ Abs _) =
530 let val (_ $ Abs (bdv,T,pred)) = inst_abs thy set;
531 val bdv = Free (bdv,T);
532 val pred = if pred <> Const ("Script.Assumptions",bool)
534 else (mk_and o (map fst)) (get_assumptions_ pt (p,Res))
536 | rep_set thy _ _ set =
537 raise error ("check_elementwise: no set "^ (*from script*)
538 (Syntax.string_of_term (thy2ctxt thy) set));
539 (*> val set = (term_of o the o (parse thy)) "{(x::real). Assumptions}";
541 > val pt = union_asm pt p [("#0 <= sqrt x + sqrt (#5 + x)",[11]),
542 ("#0 <= #9 + #4 * x",[22]),
543 ("#0 <= x ^^^ #2 + #5 * x",[33]),
544 ("#0 <= #2 + x",[44])];
545 > val (bdv,pred) = rep_set thy pt p set;
546 val bdv = Free ("x","RealDef.real") : term
547 > writeln (Syntax.string_of_term (thy2ctxt thy) pred);
548 ((#0 <= sqrt x + sqrt (#5 + x) & #0 <= #9 + #4 * x) &
549 #0 <= x ^^^ #2 + #5 * x) &
552 --------------------------------------------11.6.03--was unused*)
558 Ass of tac_ * (*SubProblem gets args instantiated in assod*)
559 term (*for itr_arg,result in ets*)
561 term (*for itr_arg,result in ets*)
564 (*.assod: tac_ associated with stac w.r.t. d
566 pt:ptree for pushing the thy specified in rootpbl into subpbls
568 Ass : associated: e.g. thmID in stac = thmID in m
569 +++ arg in stac = arg in m
570 AssWeak: weakly ass.:e.g. thmID in stac = thmID in m, //arg//
571 NotAss : e.g. thmID in stac/=/thmID in m (not =)
573 tac_ SubProblem with args completed from script
575 fun assod pt d (m as Rewrite_Inst' (thy',rod,rls,put,subs,(thmID,thm),f,(f',asm))) stac =
577 (Const ("Script.Rewrite'_Inst",_) $ subs_ $ Free (thmID_,idT) $b$f_)=>
578 if thmID = thmID_ then
579 if f = f_ then ((*writeln"3### assod ..Ass";*)Ass (m,f'))
580 else ((*writeln"3### assod ..AssWeak";*)AssWeak(m, f'))
581 else ((*writeln"3### assod ..NotAss";*)NotAss)
582 | (Const ("Script.Rewrite'_Set'_Inst",_) $ sub_ $ Free (rls_,_) $_$f_)=>
583 if contains_rule (Thm (thmID, refl(*dummy*))) (assoc_rls rls_) then
584 if f = f_ then Ass (m,f') else AssWeak (m,f')
588 | assod pt d (m as Rewrite' (thy,rod,rls,put,(thmID,thm),f,(f',asm))) stac =
590 (t as Const ("Script.Rewrite",_) $ Free (thmID_,idT) $ b $ f_) =>
591 ((*writeln("3### assod: stac = "^
592 (Syntax.string_of_term (thy2ctxt (assoc_thy thy)) t));
593 writeln("3### assod: f(m)= "^
594 (Syntax.string_of_term (thy2ctxt (assoc_thy thy)) f));*)
595 if thmID = thmID_ then
596 if f = f_ then ((*writeln"3### assod ..Ass";*)Ass (m,f'))
597 else ((*writeln"### assod ..AssWeak";
598 writeln("### assod: f(m) = "^
599 (Sign.string_of_term (sign_of(assoc_thy thy)) f));
600 writeln("### assod: f(stac)= "^
601 (Sign.string_of_term(sign_of(assoc_thy thy))f_))*)
603 else ((*writeln"3### assod ..NotAss";*)NotAss))
604 | (Const ("Script.Rewrite'_Set",_) $ Free (rls_,_) $ _ $ f_) =>
605 if contains_rule (Thm (thmID, refl(*dummy*))) (assoc_rls rls_) then
606 if f = f_ then Ass (m,f') else AssWeak (m,f')
610 (*val f = (term_of o the o (parse thy))"#0+(sqrt(sqrt(sqrt a))^^^#2)^^^#2=#0";
611 > val f'= (term_of o the o (parse thy))"#0+(sqrt(sqrt a))^^^#2=#0";
612 > val m = Rewrite'("Script.thy","tless_true","eval_rls",false,
613 ("rroot_square_inv",""),f,(f',[]));
614 > val stac = (term_of o the o (parse thy))
615 "Rewrite rroot_square_inv False (#0+(sqrt(sqrt(sqrt a))^^^#2)^^^#2=#0)";
616 > assod e_rls m stac;
618 (SOME (Rewrite' (#,#,#,#,#,#,#)),Const ("empty","RealDef.real"),
619 Const ("empty","RealDef.real")) : tac_ option * term * term*)
621 | assod pt d (m as Rewrite_Set_Inst' (thy',put,sub,rls,f,(f',asm)))
622 (Const ("Script.Rewrite'_Set'_Inst",_) $ sub_ $ Free (rls_,_) $ _ $ f_)=
623 if id_rls rls = rls_ then
624 if f = f_ then Ass (m,f') else AssWeak (m,f')
627 | assod pt d (m as Detail_Set_Inst' (thy',put,sub,rls,f,(f',asm)))
628 (Const ("Script.Rewrite'_Set'_Inst",_) $ sub_ $ Free (rls_,_) $ _ $ f_)=
629 if id_rls rls = rls_ then
630 if f = f_ then Ass (m,f') else AssWeak (m,f')
633 | assod pt d (m as Rewrite_Set' (thy,put,rls,f,(f',asm)))
634 (Const ("Script.Rewrite'_Set",_) $ Free (rls_,_) $ _ $ f_) =
635 if id_rls rls = rls_ then
636 if f = f_ then Ass (m,f') else AssWeak (m,f')
639 | assod pt d (m as Detail_Set' (thy,put,rls,f,(f',asm)))
640 (Const ("Script.Rewrite'_Set",_) $ Free (rls_,_) $ _ $ f_) =
641 if id_rls rls = rls_ then
642 if f = f_ then Ass (m,f') else AssWeak (m,f')
645 | assod pt d (m as Calculate' (thy',op_,f,(f',thm'))) stac =
647 (Const ("Script.Calculate",_) $ Free (op__,_) $ f_) =>
649 if f = f_ then Ass (m,f') else AssWeak (m,f')
651 | (Const ("Script.Rewrite'_Set'_Inst",_) $ sub_ $ Free(rls_,_) $_$f_)=>
652 if contains_rule (Calc (snd (assoc1 (!calclist', op_))))
653 (assoc_rls rls_) then
654 if f = f_ then Ass (m,f') else AssWeak (m,f')
656 | (Const ("Script.Rewrite'_Set",_) $ Free (rls_, _) $ _ $ f_) =>
657 if contains_rule (Calc (snd (assoc1 (!calclist', op_))))
658 (assoc_rls rls_) then
659 if f = f_ then Ass (m,f') else AssWeak (m,f')
663 | assod pt _ (m as Check_elementwise' (consts,_,(consts_chkd,_)))
664 (Const ("Script.Check'_elementwise",_) $ consts' $ _) =
665 ((*writeln("### assod Check'_elementwise: consts= "^(term2str consts)^
666 ", consts'= "^(term2str consts'));
667 atomty consts; atomty consts';*)
668 if consts = consts' then ((*writeln"### assod Check'_elementwise: Ass";*)
669 Ass (m, consts_chkd))
670 else ((*writeln"### assod Check'_elementwise: NotAss";*) NotAss))
672 | assod pt _ (m as Or_to_List' (ors, list))
673 (Const ("Script.Or'_to'_List",_) $ _) =
676 | assod pt _ (m as Take' term)
677 (Const ("Script.Take",_) $ _) =
680 | assod pt _ (m as Substitute' (_, _, res))
681 (Const ("Script.Substitute",_) $ _ $ _) =
683 (* val t = str2term "Substitute [(x, 3)] (x^^^2 + x + 1)";
684 val (Const ("Script.Substitute",_) $ _ $ _) = t;
687 | assod pt _ (m as Tac_ (thy,f,id,f'))
688 (Const ("Script.Tac",_) $ Free (id',_)) =
689 if id = id' then Ass (m, ((term_of o the o (parse thy)) f'))
694 "SubProblem (DiffApp_,[make,function],[no_met]) \
695 \[real_ m_, real_ v_, bool_list_ rs_]";
697 val (Subproblem' ((domID,pblID,metID),_,_,_,f)) = m;
698 val (Const ("Script.SubProblem",_) $
701 (Const ("Pair",_) $ pI' $ mI')) $ ags') = stac;
703 | assod pt _ (Subproblem' ((domID,pblID,metID),_,_,_,f))
704 (stac as Const ("Script.SubProblem",_) $
707 (Const ("Pair",_) $ pI' $ mI')) $ ags') =
708 (*compare "| stac2tac_ thy (Const ("Script.SubProblem",_)"*)
709 let val dI = ((implode o drop_last o explode) dI')^".thy";
710 val thy = maxthy (assoc_thy dI) (rootthy pt);
711 val pI = ((map (de_esc_underscore o free2str)) o isalist2list) pI';
712 val mI = ((map (de_esc_underscore o free2str)) o isalist2list) mI';
713 val ags = isalist2list ags';
716 then let val pors = (match_ags thy ((#ppc o get_pbt) pI) ags)
717 handle _=>(match_ags_msg pI stac ags(*raise exn*);[]);
718 val pI' = refine_ori' pors pI;
719 in (pI', pors (*refinement over models with diff.prec only*),
720 (hd o #met o get_pbt) pI') end
721 else (pI, (match_ags thy ((#ppc o get_pbt) pI) ags)
722 handle _ => (match_ags_msg pI stac ags(*raise exn*);[]),
724 val (fmz_, vals) = oris2fmz_vals pors;
725 val {cas, ppc,...} = get_pbt pI
726 val {cas, ppc, thy,...} = get_pbt pI
727 val dI = theory2theory' thy (*take dI from _refined_ pbl*)
728 val dI = theory2theory' (maxthy (assoc_thy dI) (rootthy pt))
729 val hdl = case cas of
730 NONE => pblterm dI pI
731 | SOME t => subst_atomic ((vars_of_pbl_' ppc) ~~~ vals) t
732 val f = subpbl (strip_thy dI) pI
733 in if domID = dI andalso pblID = pI
734 then Ass (Subproblem' ((dI, pI, mI), pors, hdl, fmz_, f), f)
740 then writeln("@@@ the 'tac_' proposed to apply does NOT match the leaf found in the script:\n"^
741 "@@@ tac_ = "^(tac_2str m))
747 fun tac_2tac (Refine_Tacitly' (pI,_,_,_,_)) = Refine_Tacitly pI
748 | tac_2tac (Model_Problem' (pI,_,_)) = Model_Problem
749 | tac_2tac (Add_Given' (t,_)) = Add_Given t
750 | tac_2tac (Add_Find' (t,_)) = Add_Find t
751 | tac_2tac (Add_Relation' (t,_)) = Add_Relation t
753 | tac_2tac (Specify_Theory' dI) = Specify_Theory dI
754 | tac_2tac (Specify_Problem' (dI,_)) = Specify_Problem dI
755 | tac_2tac (Specify_Method' (dI,_,_)) = Specify_Method dI
757 | tac_2tac (Rewrite' (thy,rod,erls,put,(thmID,thm),f,(f',asm))) =
760 | tac_2tac (Rewrite_Inst' (thy,rod,erls,put,sub,(thmID,thm),f,(f',asm)))=
761 Rewrite_Inst (subst2subs sub,(thmID,thm))
763 | tac_2tac (Rewrite_Set' (thy,put,rls,f,(f',asm))) =
764 Rewrite_Set (id_rls rls)
766 | tac_2tac (Detail_Set' (thy,put,rls,f,(f',asm))) =
767 Detail_Set (id_rls rls)
769 | tac_2tac (Rewrite_Set_Inst' (thy,put,sub,rls,f,(f',asm))) =
770 Rewrite_Set_Inst (subst2subs sub,id_rls rls)
772 | tac_2tac (Detail_Set_Inst' (thy,put,sub,rls,f,(f',asm))) =
773 Detail_Set_Inst (subst2subs sub,id_rls rls)
775 | tac_2tac (Calculate' (thy,op_,t,(t',thm'))) = Calculate (op_)
777 | tac_2tac (Check_elementwise' (consts,pred,consts')) =
778 Check_elementwise pred
780 | tac_2tac (Or_to_List' _) = Or_to_List
781 | tac_2tac (Take' term) = Take (term2str term)
782 | tac_2tac (Substitute' (subte, t, res)) = Substitute (subte2sube subte)
784 | tac_2tac (Tac_ (_,f,id,f')) = Tac id
786 | tac_2tac (Subproblem' ((domID, pblID, _), _, _,_,_)) =
787 Subproblem (domID, pblID)
788 | tac_2tac (Check_Postcond' (pblID, _)) =
790 | tac_2tac Empty_Tac_ = Empty_Tac
793 raise error ("tac_2tac: not impl. for "^(tac_2str m));
798 (** decompose tac_ to a rule and to (lhs,rhs)
801 val idT = Type ("Script.ID",[]);
802 (*val tt = (term_of o the o (parse thy)) "square_equation_left::ID";
807 fun make_rule thy t =
808 let val ct = cterm_of thy (Trueprop $ t)
809 in Thm (Syntax.string_of_term (thy2ctxt thy) (term_of ct), make_thm ct) end;
811 (* val (Rewrite_Inst'(thy',rod,rls,put,subs,(thmID,thm),f,(f',asm)))=m;
813 (*decompose tac_ to a rule and to (lhs,rhs) for ets FIXME.12.03: obsolete!
814 NOTE.12.03: also used for msg 'not locatable' ?!: 'Subproblem' missing !!!
815 WN0508 only use in tac_2res, which uses only last return-value*)
816 fun rep_tac_ (Rewrite_Inst'
817 (thy',rod,rls,put,subs,(thmID,thm),f,(f',asm))) =
818 let val fT = type_of f;
819 val b = if put then HOLogic.true_const else HOLogic.false_const;
820 val sT = (type_of o fst o hd) subs;
821 val subs' = list2isalist (HOLogic.mk_prodT (sT, sT))
822 (map HOLogic.mk_prod subs);
823 val sT' = type_of subs';
824 val lhs = Const ("Script.Rewrite'_Inst",[sT',idT,(*fT*)bool,fT] ---> fT)
825 $ subs' $ Free (thmID,idT) $ b $ f;
826 in (((make_rule (assoc_thy thy')) o HOLogic.mk_eq) (lhs,f'),(lhs,f')) end
827 (*Fehlersuche 25.4.01
828 (a)----- als String zusammensetzen:
829 ML> Syntax.string_of_term (thy2ctxt thy)f;
830 val it = "d_d x #4 + d_d x (x ^^^ #2 + #3 * x)" : string
831 ML> Syntax.string_of_term (thy2ctxt thy)f';
832 val it = "#0 + d_d x (x ^^^ #2 + #3 * x)" : string
834 val it = [(Free ("bdv","RealDef.real"),Free ("x","RealDef.real"))] : subst
835 > val tt = (term_of o the o (parse thy))
836 "(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))";
838 ML> writeln(Syntax.string_of_term (thy2ctxt thy)tt);
839 (Rewrite_Inst [(bdv,x)] diff_const False d_d x #4 + d_d x (x ^^^ #2 + #3 * x)) =
840 #0 + d_d x (x ^^^ #2 + #3 * x)
842 (b)----- laut rep_tac_:
843 > val ttt=HOLogic.mk_eq (lhs,f');
847 (*Fehlersuche 1-2Monate vor 4.01:*)
848 > val tt = (term_of o the o (parse thy))
849 "Rewrite_Inst[(bdv,x)]square_equation_left True(x=#1+#2)";
852 > val f = (term_of o the o (parse thy)) "x=#1+#2";
853 > val f' = (term_of o the o (parse thy)) "x=#3";
854 > val subs = [((term_of o the o (parse thy)) "bdv",
855 (term_of o the o (parse thy)) "x")];
856 > val sT = (type_of o fst o hd) subs;
857 > val subs' = list2isalist (HOLogic.mk_prodT (sT, sT))
858 (map HOLogic.mk_prod subs);
859 > val sT' = type_of subs';
860 > val lhs = Const ("Script.Rewrite'_Inst",[sT',idT,fT,fT] ---> fT)
861 $ subs' $ Free (thmID,idT) $ HOLogic.true_const $ f;
864 > rep_tac_ (Rewrite_Inst'
865 ("Script.thy","tless_true","eval_rls",false,subs,
866 ("square_equation_left",""),f,(f',[])));
868 | rep_tac_ (Rewrite' (thy',rod,rls,put,(thmID,thm),f,(f',asm)))=
871 val b = if put then HOLogic.true_const else HOLogic.false_const;
872 val lhs = Const ("Script.Rewrite",[idT,HOLogic.boolT,fT] ---> fT)
873 $ Free (thmID,idT) $ b $ f;
874 in (((make_rule (assoc_thy thy')) o HOLogic.mk_eq) (lhs,f'),(lhs,f')) end
876 > val tt = (term_of o the o (parse thy)) (*____ ____..test*)
877 "Rewrite square_equation_left True (x=#1+#2) = (x=#3)";
879 > val f = (term_of o the o (parse thy)) "x=#1+#2";
880 > val f' = (term_of o the o (parse thy)) "x=#3";
883 ("Script.thy","tless_true","eval_rls",false,
884 ("square_equation_left",""),f,(f',[])));
885 > val SOME ct = parse thy
886 "Rewrite square_equation_left True (x=#1+#2)";
887 > rewrite_ Script.thy tless_true eval_rls true thm ct;
888 val it = SOME ("x = #3",[]) : (cterm * cterm list) option
890 | rep_tac_ (Rewrite_Set_Inst'
891 (thy',put,subs,rls,f,(f',asm))) =
892 (e_rule, (e_term, f'))
893 (*WN050824: type error ...
894 let val fT = type_of f;
895 val sT = (type_of o fst o hd) subs;
896 val subs' = list2isalist (HOLogic.mk_prodT (sT, sT))
897 (map HOLogic.mk_prod subs);
898 val sT' = type_of subs';
899 val b = if put then HOLogic.true_const else HOLogic.false_const
900 val lhs = Const ("Script.Rewrite'_Set'_Inst",
901 [sT',idT,fT,fT] ---> fT)
902 $ subs' $ Free (id_rls rls,idT) $ b $ f;
903 in (((make_rule (assoc_thy thy')) o HOLogic.mk_eq) (lhs,f'),(lhs,f')) end*)
904 (* ... vals from Rewrite_Inst' ...
905 > rep_tac_ (Rewrite_Set_Inst'
906 ("Script.thy",false,subs,
907 "isolate_bdv",f,(f',[])));
909 (* val (Rewrite_Set' (thy',put,rls,f,(f',asm)))=m;
911 | rep_tac_ (Rewrite_Set' (thy',put,rls,f,(f',asm)))=
912 let val fT = type_of f;
913 val b = if put then HOLogic.true_const else HOLogic.false_const;
914 val lhs = Const ("Script.Rewrite'_Set",[idT,bool,fT] ---> fT)
915 $ Free (id_rls rls,idT) $ b $ f;
916 in (((make_rule (assoc_thy thy')) o HOLogic.mk_eq) (lhs,f'),(lhs,f')) end
918 val thy = assoc_thy thy';
919 val t = HOLogic.mk_eq (lhs,f');
921 --------------------------------------------------
922 val lll = (term_of o the o (parse thy))
923 "Rewrite_Set SqRoot_simplify False (d_d x (x ^^^ #2 + #3 * x) + d_d x #4)";
925 --------------------------------------------------
926 > val f = (term_of o the o (parse thy)) "x=#1+#2";
927 > val f' = (term_of o the o (parse thy)) "x=#3";
929 rep_tac_ (Rewrite_Set'
930 ("Script.thy",false,"SqRoot_simplify",f,(f',[])));
931 val id = "(Rewrite_Set SqRoot_simplify True x = #1 + #2) = (x = #3)" : string
932 val thm = "(Rewrite_Set SqRoot_simplify True x = #1 + #2) = (x = #3)" : thm
934 | rep_tac_ (Calculate' (thy',op_,f,(f',thm')))=
935 let val fT = type_of f;
936 val lhs = Const ("Script.Calculate",[idT,fT] ---> fT)
938 in (((make_rule (assoc_thy thy')) o HOLogic.mk_eq) (lhs,f'),(lhs,f')) end
940 > val lhs'=(term_of o the o (parse thy))"Calculate plus (#1+#2)";
941 ... test-root-equ.sml: calculate ...
942 > val Appl m'=applicable_in p pt (Calculate "PLUS");
943 > val (lhs,_)=tac_2etac m';
945 val it = true : bool*)
946 | rep_tac_ (Check_elementwise' (t,str,(t',asm))) = (Erule, (e_term, t'))
947 | rep_tac_ (Subproblem' (_,_,_,_,t')) = (Erule, (e_term, t'))
948 | rep_tac_ (Take' (t')) = (Erule, (e_term, t'))
949 | rep_tac_ (Substitute' (subst,t,t')) = (Erule, (t, t'))
950 | rep_tac_ (Or_to_List' (t, t')) = (Erule, (t, t'))
951 | rep_tac_ m = raise error ("rep_tac_: not impl.for "^
955 fun tac_2rule m = (fst o rep_tac_) m;
956 fun tac_2etac m = (snd o rep_tac_) m;
957 fun tac_2tac m = (fst o snd o rep_tac_) m;*)
958 fun tac_2res m = (snd o snd o rep_tac_) m;(*ONLYuse of rep_tac_
959 FIXXXXME: simplify rep_tac_*)
963 a leaf is either a tactic or an 'exp' in 'let v = expr'
964 where 'exp' does not contain a tactic.
965 handling a leaf comprises
966 (1) 'subst_stacexpr' substitute env and complete curried tactic
967 (2) rewrite the leaf by 'srls'
968 WN060906 quick and dirty fix: return a' too (for updating E later)
970 fun handle_leaf call thy srls E a v t =
971 (*WN050916 'upd_env_opt' is a blind copy from previous version*)
972 case subst_stacexpr E a v t of
973 (a', STac stac) => (*script-tactic*)
974 let val stac' = eval_listexpr_ (assoc_thy thy) srls
975 (subst_atomic (upd_env_opt E (a,v)) stac)
976 in (if (!trace_script)
977 then writeln ("@@@ "^call^" leaf '"^term2str t^"' ---> STac '"^
982 | (a', Expr lexpr) => (*leaf-expression*)
983 let val lexpr' = eval_listexpr_ (assoc_thy thy) srls
984 (subst_atomic (upd_env_opt E (a,v)) lexpr)
985 in (if (!trace_script)
986 then writeln("@@@ "^call^" leaf '"^term2str t^"' ---> Expr '"^
994 (** locate an applicable stactic in a script **)
996 datatype assoc = (*ExprVal in the sense of denotational semantics*)
997 Assoc of (*the stac is associated, strongly or weakly*)
998 scrstate * (*the current; returned for next_tac etc. outside ass* *)
999 (step list) (*list of steps done until associated stac found;
1000 initiated with the data for doing the 1st step,
1001 thus the head holds these data further on,
1002 while the tail holds steps finished (incl.scrstate in ptree)*)
1003 | NasApp of (*stac not associated, but applicable, ptree-node generated*)
1004 scrstate * (step list)
1005 | NasNap of (*stac not associated, not applicable, nothing generated;
1006 for distinction in Or, for leaving iterations, leaving Seq,
1007 evaluate scriptexpressions*)
1009 fun assoc2str (Assoc _) = "Assoc"
1010 | assoc2str (NasNap _) = "NasNap"
1011 | assoc2str (NasApp _) = "NasApp";
1014 datatype asap = (*arg. of assy _only_ for distinction w.r.t. Or*)
1015 Aundef (*undefined: set only by (topmost) Or*)
1016 | AssOnly (*do not execute appl stacs - there could be an associated
1017 in parallel Or-branch*)
1018 | AssGen; (*no Ass(Weak) found within Or, thus
1019 search for _applicable_ stacs, execute and generate pt*)
1020 (*this constructions doesnt allow arbitrary nesting of Or !!!*)
1023 (*assy, ass_up, astep_up scanning for locate_gen at stactic in a script.
1024 search is clearly separated into (1)-(2):
1025 (1) assy is recursive descent;
1026 (2) ass_up resumes interpretation at a location somewhere in the script;
1027 astep_up does only get to the parentnode of the scriptexpr.
1029 * call of (2) means _always_ that in this branch below
1030 there was an appl.stac (Repeat, Or e1, ...)
1032 fun assy ya (is as (E,l,a,v,S,b),ss)
1033 (Const ("Let",_) $ e $ (Abs (id,T,body))) =
1034 (* val (ya, (is as (E,l,a,v,S,b),ss),Const ("Let",_) $ e $ (Abs (id,T,body))) =
1035 (*1*)(((ts,d),Aundef), ((E,[R],a,v,S,b),[(m,EmptyMout,pt,p,[])]), body);
1037 ((*writeln("### assy Let$e$Abs: is=");
1038 writeln(istate2str (ScrState is));*)
1039 case assy ya ((E , l@[L,R], a,v,S,b),ss) e of
1040 NasApp ((E',l,a,v,S,bb),ss) =>
1041 let val id' = mk_Free (id, T);
1042 val E' = upd_env E' (id', v);
1043 (*val _=writeln("### assy Let -> NasApp");*)
1044 in assy ya ((E', l@[R,D], a,v,S,b),ss) body end
1046 let val id' = mk_Free (id, T);
1047 val E' = upd_env E (id', v);
1048 (*val _=writeln("### assy Let -> NasNap");*)
1049 in assy ya ((E', l@[R,D], a,v,S,b),ss) body end
1052 | assy (ya as (((thy,srls),_),_)) ((E,l,_,v,S,b),ss)
1053 (Const ("Script.While",_) $ c $ e $ a) =
1054 ((*writeln("### assy While $ c $ e $ a, upd_env= "^
1055 (subst2str (upd_env E (a,v))));*)
1056 if eval_true_ thy srls (subst_atomic (upd_env E (a,v)) c)
1057 then assy ya ((E, l@[L,R], SOME a,v,S,b),ss) e
1060 | assy (ya as (((thy,srls),_),_)) ((E,l,a,v,S,b),ss)
1061 (Const ("Script.While",_) $ c $ e) =
1062 ((*writeln("### assy While, l= "^(loc_2str l));*)
1063 if eval_true_ thy srls (subst_atomic (upd_env_opt E (a,v)) c)
1064 then assy ya ((E, l@[R], a,v,S,b),ss) e
1067 | assy (ya as (((thy,srls),_),_)) ((E,l,a,v,S,b),ss)
1068 (Const ("If",_) $ c $ e1 $ e2) =
1069 (if eval_true_ thy srls (subst_atomic (upd_env_opt E (a,v)) c)
1070 then assy ya ((E, l@[L,R], a,v,S,b),ss) e1
1071 else assy ya ((E, l@[ R], a,v,S,b),ss) e2)
1073 | assy ya ((E,l,_,v,S,b),ss) (Const ("Script.Try",_) $ e $ a) =
1074 ((*writeln("### assy Try $ e $ a, l= "^(loc_2str l));*)
1075 case assy ya ((E, l@[L,R], SOME a,v,S,b),ss) e of
1078 | assy ya ((E,l,a,v,S,b),ss) (Const ("Script.Try",_) $ e) =
1079 ((*writeln("### assy Try $ e, l= "^(loc_2str l));*)
1080 case assy ya ((E, l@[R], a,v,S,b),ss) e of
1082 (* val (ya, ((E,l,_,v,S,b),ss), (Const ("Script.Seq",_) $e1 $ e2 $ a)) =
1083 (*2*)(ya, ((E , l@[L,R], a,v,S,b),ss), e);
1085 | assy ya ((E,l,_,v,S,b),ss) (Const ("Script.Seq",_) $e1 $ e2 $ a) =
1086 ((*writeln("### assy Seq $e1 $ e2 $ a, E= "^(subst2str E));*)
1087 case assy ya ((E, l@[L,L,R], SOME a,v,S,b),ss) e1 of
1088 NasNap (v, E) => assy ya ((E, l@[L,R], SOME a,v,S,b),ss) e2
1089 | NasApp ((E,_,_,v,_,_),ss) =>
1090 assy ya ((E, l@[L,R], SOME a,v,S,b),ss) e2
1093 | assy ya ((E,l,a,v,S,b),ss) (Const ("Script.Seq",_) $e1 $ e2) =
1094 (case assy ya ((E, l@[L,R], a,v,S,b),ss) e1 of
1095 NasNap (v, E) => assy ya ((E, l@[R], a,v,S,b),ss) e2
1096 | NasApp ((E,_,_,v,_,_),ss) =>
1097 assy ya ((E, l@[R], a,v,S,b),ss) e2
1100 | assy ya ((E,l,_,v,S,b),ss) (Const ("Script.Repeat",_) $ e $ a) =
1101 assy ya ((E,(l@[L,R]),SOME a,v,S,b),ss) e
1103 | assy ya ((E,l,a,v,S,b),ss) (Const ("Script.Repeat",_) $ e) =
1104 assy ya ((E,(l@[R]),a,v,S,b),ss) e
1106 (*15.6.02: ass,app Or nochmals "uberlegen FIXXXME*)
1107 | assy (y, Aundef) ((E,l,_,v,S,b),ss) (Const ("Script.Or",_) $e1 $ e2 $ a) =
1108 (case assy (y, AssOnly) ((E,(l@[L,L,R]),SOME a,v,S,b),ss) e1 of
1110 (case assy (y, AssOnly) ((E,(l@[L,R]),SOME a,v,S,b),ss) e2 of
1112 (case assy (y, AssGen) ((E,(l@[L,L,R]),SOME a,v,S,b),ss) e1 of
1114 assy (y, AssGen) ((E, (l@[L,R]), SOME a,v,S,b),ss) e2
1117 | NasApp _ => raise error ("assy: FIXXXME ///must not return NasApp///")
1120 | assy ya ((E,l,a,v,S,b),ss) (Const ("Script.Or",_) $e1 $ e2) =
1121 (case assy ya ((E,(l@[L,R]),a,v,S,b),ss) e1 of
1123 assy ya ((E,(l@[R]),a,v,S,b),ss) e2
1125 (* val ((m,_,pt,(p,p_),c)::ss) = [(m,EmptyMout,pt,p,[])];
1126 val t = (term_of o the o (parse Isac.thy)) "Rewrite rmult_1 False";
1128 val (ap,(p,p_),c,ss) = (Aundef,p,[],[]);
1129 assy (((thy',srls),d),ap) ((E,l,a,v,S,b), (m,EmptyMout,pt,(p,p_),c)::ss) t;
1130 val ((((thy',sr),d),ap), (is as (E,l,a,v,S,b), (m,_,pt,(p,p_),c)::ss), t) =
1134 | assy (((thy',sr),d),ap) (is as (E,l,a,v,S,b), (m,_,pt,(p,p_),c)::ss) t =
1135 ((*writeln("### assy, m = "^tac_2str m);
1136 writeln("### assy, (p,p_) = "^pos'2str (p,p_));
1137 writeln("### assy, is= ");
1138 writeln(istate2str (ScrState is));*)
1139 case handle_leaf "locate" thy' sr E a v t of
1141 ((*writeln("### assy: listexpr t= "^(term2str t));
1142 writeln("### assy, E= "^(env2str E));
1143 writeln("### assy, eval(..)= "^(term2str
1144 (eval_listexpr_ (assoc_thy thy') sr
1145 (subst_atomic (upd_env_opt E (a',v)) t))));*)
1146 NasNap (eval_listexpr_ (assoc_thy thy') sr
1147 (subst_atomic (upd_env_opt E (a',v)) t), E))
1148 (* val (_,STac stac) = subst_stacexpr E a v t;
1150 | (a', STac stac) =>
1151 let (*val _=writeln("### assy, stac = "^term2str stac);*)
1152 val p' = case p_ of Frm => p | Res => lev_on p
1153 | _ => raise error ("assy: call by "^
1155 in case assod pt d m stac of
1157 let (*val _=writeln("### assy: Ass ("^tac_2str m^", "^
1159 val (p'',c',f',pt') = generate1 (assoc_thy thy') m
1160 (ScrState (E,l,a',v',S,true)) (p',p_) pt;
1161 in Assoc ((E,l,a',v',S,true), (m,f',pt',p'',c @ c')::ss) end
1163 let (*val _=writeln("### assy: Ass Weak("^tac_2str m^", "^
1165 val (p'',c',f',pt') = generate1 (assoc_thy thy') m
1166 (ScrState (E,l,a',v',S,false)) (p',p_) pt;
1167 in Assoc ((E,l,a',v',S,false), (m,f',pt',p'',c @ c')::ss) end
1169 ((*writeln("### assy, NotAss");*)
1170 case ap of (*switch for Or: 1st AssOnly, 2nd AssGen*)
1171 AssOnly => (NasNap (v, E))
1172 | gen => (case applicable_in (p,p_) pt
1173 (stac2tac pt (assoc_thy thy') stac) of
1175 let val is = (E,l,a',tac_2res m',S,false(*FIXXXME*))
1176 val (p'',c',f',pt') =
1177 generate1 (assoc_thy thy') m' (ScrState is) (p',p_) pt;
1178 in NasApp (is,(m,f',pt',p'',c @ c')::ss) end
1184 (* (astep_up ((thy',scr,d),NasApp_) ((E,l,a,v,S,b),[(m,EmptyMout,pt,p,[])])) handle e => print_exn_G e;
1188 (* val (ys as (y,s,Script sc,d),(is as (E,l,a,v,S,b),ss),Const ("Let",_) $ _) =
1189 (ys, ((E,up,a,v,S,b),ss), go up sc);
1191 fun ass_up (ys as (y,s,Script sc,d)) (is as (E,l,a,v,S,b),ss)
1192 (Const ("Let",_) $ _) =
1193 let (*val _= writeln("### ass_up1 Let$e: is=")
1194 val _= writeln(istate2str (ScrState is))*)
1195 val l = drop_last l; (*comes from e, goes to Abs*)
1196 val (Const ("Let",_) $ e $ (Abs (i,T,body))) = go l sc;
1197 val i = mk_Free (i, T);
1198 val E = upd_env E (i, v);
1199 (*val _=writeln("### ass_up2 Let$e: E="^(subst2str E));*)
1200 in case assy (((y,s),d),Aundef) ((E, l@[R,D], a,v,S,b),ss) body of
1201 Assoc iss => Assoc iss
1202 | NasApp iss => astep_up ys iss
1203 | NasNap (v, E) => astep_up ys ((E,l,a,v,S,b),ss) end
1205 | ass_up ys (iss as (is,_)) (Abs (_,_,_)) =
1206 ((*writeln("### ass_up Abs: is=");
1207 writeln(istate2str (ScrState is));*)
1208 astep_up ys iss) (*TODO 5.9.00: env ?*)
1210 | ass_up ys (iss as (is,_)) (Const ("Let",_) $ e $ (Abs (i,T,b)))=
1211 ((*writeln("### ass_up Let $ e $ Abs: is=");
1212 writeln(istate2str (ScrState is));*)
1213 astep_up ys iss) (*TODO 5.9.00: env ?*)
1215 (* val (ysa, iss, (Const ("Script.Seq",_) $ _ $ _ $ _)) =
1216 (ys, ((E,up,a,v,S,b),ss), (go up sc));
1218 | ass_up ysa iss (Const ("Script.Seq",_) $ _ $ _ $ _) =
1219 astep_up ysa iss (*all has been done in (*2*) below*)
1221 | ass_up ysa iss (Const ("Script.Seq",_) $ _ $ _) =
1222 (* val (ysa, iss, (Const ("Script.Seq",_) $ _ $ _)) =
1223 (ys, ((E,up,a,v,S,b),ss), (go up sc));
1225 astep_up ysa iss (*2*: comes from e2*)
1227 | ass_up (ysa as (y,s,Script sc,d)) (is as (E,l,a,v,S,b),ss)
1228 (Const ("Script.Seq",_) $ _ ) = (*2*: comes from e1, goes to e2*)
1229 (* val ((ysa as (y,s,Script sc,d)), (is as (E,l,a,v,S,b),ss),
1230 (Const ("Script.Seq",_) $ _ )) =
1231 (ys, ((E,up,a,v,S,b),ss), (go up sc));
1233 let val up = drop_last l;
1234 val Const ("Script.Seq",_) $ _ $ e2 = go up sc
1235 (*val _= writeln("### ass_up Seq$e: is=")
1236 val _= writeln(istate2str (ScrState is))*)
1237 in case assy (((y,s),d),Aundef) ((E, up@[R], a,v,S,b),ss) e2 of
1238 NasNap (v,E) => astep_up ysa ((E,up,a,v,S,b),ss)
1239 | NasApp iss => astep_up ysa iss
1242 (* val (ysa, iss, (Const ("Script.Try",_) $ e $ _)) =
1243 (ys, ((E,up,a,v,S,b),ss), (go up sc));
1245 | ass_up ysa iss (Const ("Script.Try",_) $ e $ _) =
1248 (* val (ysa, iss, (Const ("Script.Try",_) $ e)) =
1249 (ys, ((E,up,a,v,S,b),ss), (go up sc));
1251 | ass_up ysa iss (Const ("Script.Try",_) $ e) =
1252 ((*writeln("### ass_up Try $ e");*)
1255 | ass_up (ys as (y,s,_,d)) ((E,l,_,v,S,b),ss)
1256 (*(Const ("Script.While",_) $ c $ e $ a) = WN050930 blind fix*)
1257 (t as Const ("Script.While",_) $ c $ e $ a) =
1258 ((*writeln("### ass_up: While c= "^
1259 (term2str (subst_atomic (upd_env E (a,v)) c)));*)
1260 if eval_true_ y s (subst_atomic (upd_env E (a,v)) c)
1261 then (case assy (((y,s),d),Aundef) ((E, l@[L,R], SOME a,v,S,b),ss) e of
1262 NasNap (v,E') => astep_up ys ((E',l, SOME a,v,S,b),ss)
1263 | NasApp ((E',l,a,v,S,b),ss) =>
1264 ass_up ys ((E',l,a,v,S,b),ss) t (*WN050930 't' was not assigned*)
1266 else astep_up ys ((E,l, SOME a,v,S,b),ss)
1269 | ass_up (ys as (y,s,_,d)) ((E,l,a,v,S,b),ss)
1270 (*(Const ("Script.While",_) $ c $ e) = WN050930 blind fix*)
1271 (t as Const ("Script.While",_) $ c $ e) =
1272 if eval_true_ y s (subst_atomic (upd_env_opt E (a,v)) c)
1273 then (case assy (((y,s),d),Aundef) ((E, l@[R], a,v,S,b),ss) e of
1274 NasNap (v,E') => astep_up ys ((E',l, a,v,S,b),ss)
1275 | NasApp ((E',l,a,v,S,b),ss) =>
1276 ass_up ys ((E',l,a,v,S,b),ss) t (*WN050930 't' was not assigned*)
1278 else astep_up ys ((E,l, a,v,S,b),ss)
1280 | ass_up y iss (Const ("If",_) $ _ $ _ $ _) = astep_up y iss
1282 | ass_up (ys as (y,s,_,d)) ((E,l,_,v,S,b),ss)
1283 (t as Const ("Script.Repeat",_) $ e $ a) =
1284 (case assy (((y,s),d), Aundef) ((E, (l@[L,R]), SOME a,v,S,b),ss) e of
1285 NasNap (v,E') => astep_up ys ((E',l, SOME a,v,S,b),ss)
1286 | NasApp ((E',l,a,v,S,b),ss) =>
1287 ass_up ys ((E',l,a,v,S,b),ss) t
1290 | ass_up (ys as (y,s,_,d)) (is as ((E,l,a,v,S,b),ss))
1291 (t as Const ("Script.Repeat",_) $ e) =
1292 (case assy (((y,s),d), Aundef) ((E, (l@[R]), a,v,S,b),ss) e of
1293 NasNap (v', E') => astep_up ys ((E',l,a,v',S,b),ss)
1294 | NasApp ((E',l,a,v',S,bb),ss) =>
1295 ass_up ys ((E',l,a,v',S,b),ss) t
1298 | ass_up y iss (Const ("Script.Or",_) $ _ $ _ $ _) = astep_up y iss
1300 | ass_up y iss (Const ("Script.Or",_) $ _ $ _) = astep_up y iss
1302 | ass_up y ((E,l,a,v,S,b),ss) (Const ("Script.Or",_) $ _ ) =
1303 astep_up y ((E, (drop_last l), a,v,S,b),ss)
1306 raise error ("ass_up not impl for t= "^(term2str t))
1308 val (ys as (_,_,Script sc,_), ss) =
1309 ((thy',srls,scr,d), [(m,EmptyMout,pt,p,[])]:step list);
1310 astep_up ys ((E,l,a,v,S,b),ss);
1311 val ((ys as (_,_,Script sc,_)), ((E,l,a,v,S,b),ss)) =
1313 val ((ys as (_,_,Script sc,_)), ((E,l,a,v,S,b),ss)) =
1314 ((thy',srls,scr,d), ((E,l,a,v,S,b), [(m,EmptyMout,pt,p,[])]));
1316 and astep_up (ys as (_,_,Script sc,_)) ((E,l,a,v,S,b),ss) =
1319 let val up = drop_last l;
1320 (*val _= writeln("### astep_up: E= "^env2str E);*)
1321 in ass_up ys ((E,up,a,v,S,b),ss) (go up sc) end
1322 else (NasNap (v, E))
1329 (* use"ME/script.sml";
1331 term2str (go up sc);
1335 (*check if there are tacs for rewriting only*)
1336 fun rew_only ([]:step list) = true
1337 | rew_only (((Rewrite' _ ,_,_,_,_))::ss) = rew_only ss
1338 | rew_only (((Rewrite_Inst' _ ,_,_,_,_))::ss) = rew_only ss
1339 | rew_only (((Rewrite_Set' _ ,_,_,_,_))::ss) = rew_only ss
1340 | rew_only (((Rewrite_Set_Inst' _ ,_,_,_,_))::ss) = rew_only ss
1341 | rew_only (((Calculate' _ ,_,_,_,_))::ss) = rew_only ss
1342 | rew_only (((Begin_Trans' _ ,_,_,_,_))::ss) = rew_only ss
1343 | rew_only (((End_Trans' _ ,_,_,_,_))::ss) = rew_only ss
1344 | rew_only _ = false;
1348 Steps of istate (*producing hd of step list (which was latest)
1349 for next_tac, for reporting Safe|Unsafe to DG*)
1350 * step (*(scrstate producing this step is in ptree !)*)
1351 list (*locate_gen may produce intermediate steps*)
1352 | NotLocatable; (*no (m Ass m') or (m AssWeak m') found*)
1356 (* locate_gen tries to locate an input tac m in the script.
1357 pursuing this goal the script is executed until an (m' equiv m) is found,
1358 or the end of the script
1360 m : input by the user, already checked by applicable_in,
1361 (to be searched within Or; and _not_ an m doing the step on ptree !)
1362 p,pt: (incl ets) at the time of input
1364 d : canonical simplifier for locating Take, Substitute, Subproblems etc.
1365 ets : ets at the time of input
1366 l : the location (in scr) of the stac which generated the current formula
1368 Steps: pt,p (incl. ets) with m done
1369 pos' list of proofobjs cut (from generate)
1370 safe: implied from last proofobj
1372 ///ToDo : ets contains a list of tacs to be done before m can be done
1373 NOT IMPL. -- "error: do other step before"
1374 NotLocatable: thus generate_hard
1376 (* val (Rewrite'(_,ro,er,pa,(id,str),f,_), p, Rfuns {locate_rule=lo,...},
1377 RrlsState (_,f'',rss,rts)) = (m, (p,p_), sc, is);
1379 fun locate_gen (thy',_) (Rewrite'(_,ro,er,pa,(id,str),f,_)) (pt,p)
1380 (Rfuns {locate_rule=lo,...}, d) (RrlsState (_,f'',rss,rts)) =
1381 (case lo rss f (Thm (id, mk_thm (assoc_thy thy') str)) of
1384 Steps (rts2steps [] ((pt,p),(f,f'',rss,rts),(thy',ro,er,pa)) rts'))
1385 (* val p as(p',p_)=(p,p_);val scr as Script(h $ body)=sc;val (E,l,a,v,S,bb)=is;
1386 locate_gen (thy':theory') (m:tac_) ((pt,p):ptree * pos')
1387 (scr,d) (E,l,a,v,S,bb);
1389 val ts = (thy',srls);
1391 val (scr as Script (h $ body)) = (sc);
1392 val ScrState (E,l,a,v,S,b) = (is);
1394 val (ts as (thy',srls), m, (pt,p),
1395 (scr as Script (h $ body),d), (ScrState (E,l,a,v,S,b))) =
1396 ((thy',srls), m, (pt,(p,p_)), (sc,d), is);
1397 locate_gen (thy',srls) m (pt,p) (Script(h $ body),d)(ScrState(E,l,a,v,S,b));
1399 val (ts as (thy',srls), m, (pt,p),
1400 (scr as Script (h $ body),d), (ScrState (E,l,a,v,S,b))) =
1401 ((thy',srls), m', (pt,(lev_on p,Frm)), (sc,d), is');
1403 val (ts as (thy',srls), m, (pt,p),
1404 (scr as Script (h $ body),d), (ScrState (E,l,a,v,S,b))) =
1405 ((thy',srls), m', (pt,(p, Res)), (sc,d), is');
1407 val (ts as (thy',srls), m, (pt,p),
1408 (scr as Script (h $ body),d), (ScrState (E,l,a,v,S,b))) =
1409 ((thy',srls), m, (pt,(p,p_)), (sc,d), is);
1411 | locate_gen (ts as (thy',srls)) (m:tac_) ((pt,p):ptree * pos')
1412 (scr as Script (h $ body),d) (ScrState (E,l,a,v,S,b)) =
1413 let (*val _= writeln("### locate_gen-----------------: is=");
1414 val _= writeln( istate2str (ScrState (E,l,a,v,S,b)));
1415 val _= writeln("### locate_gen: l= "^loc_2str l^", p= "^pos'2str p)*)
1416 val thy = assoc_thy thy';
1417 in case if l=[] orelse ((*init.in solve..Apply_Method...*)
1418 (last_elem o fst) p = 0 andalso snd p = Res)
1419 then (assy ((ts,d),Aundef) ((E,[R],a,v,S,b),
1420 [(m,EmptyMout,pt,p,[])]) body)
1421 (* val Assoc (iss as (is as (_,_,_,_,_,bb), ss as ((m',f',pt',p',c')::_))) =
1422 (astep_up (thy',srls,scr,d) ((E,l,a,v,S,b),[(m,EmptyMout,pt,p,[])]));
1423 (assy ((ts,d),Aundef) ((E,[R],a,v,S,b),[(m,EmptyMout,pt,p,[])]) body);
1425 else (astep_up (thy',srls,scr,d) ((E,l,a,v,S,b),
1426 [(m,EmptyMout,pt,p,[])]) ) of
1427 Assoc (iss as (is as (_,_,_,_,_,bb), ss as ((m',f',pt',p',c')::_))) =>
1428 (* val Assoc (iss as (is as (_,_,_,_,_,bb), ss as ((m',f',pt',p',c')::_))) =
1429 (astep_up (thy',srls,scr,d) ((E,l,a,v,S,b),
1430 [(m,EmptyMout,pt,p,[])]) );
1432 ((*writeln("### locate_gen Assoc: p'="^(pos'2str p'));*)
1433 if bb then Steps (ScrState is, ss)
1434 else if rew_only ss (*andalso 'not bb'= associated weakly*)
1435 then let val (po,p_) = p
1436 val po' = case p_ of Frm => po | Res => lev_on po
1437 (*WN.12.03: noticed, that pos is also updated in assy !?!
1438 instead take p' from Assoc ?????????????????????????????*)
1439 val (p'',c'',f'',pt'') =
1440 generate1 thy m (ScrState is) (po',p_) pt;
1441 (*val _=writeln("### locate_gen, aft g1: p''="^(pos'2str p''));*)
1442 (*drop the intermediate steps !*)
1443 in Steps (ScrState is, [(m, f'',pt'',p'',c'')]) end
1444 else Steps (ScrState is, ss))
1446 | NasApp _ (*[((E,l,a,v,S,bb),(m',f',pt',p',c'))] =>
1447 raise error ("locate_gen: should not have got NasApp, ets =")*)
1450 if l=[] then NotLocatable
1451 else (*scan from begin of script for rew_only*)
1452 (case assy ((ts,d),Aundef) ((E,[R],a,v,Unsafe,b),
1453 [(m,EmptyMout,pt,p,[])]) body of
1454 Assoc (iss as (is as (_,_,_,_,_,bb),
1455 ss as ((m',f',pt',p',c')::_))) =>
1456 ((*writeln"4### locate_gen Assoc after Fini";*)
1458 then let val(p'',c'',f'',pt'') =
1459 generate1 thy m (ScrState is) p' pt;
1460 (*drop the intermediate steps !*)
1461 in Steps (ScrState is, [(m, f'',pt'',p'',c'')]) end
1463 | _ => ((*writeln ("#### locate_gen: after Fini");*)
1466 | locate_gen _ m _ (sc,_) is =
1467 raise error ("locate_gen: wrong arguments,\n tac= "^(tac_2str m)^
1468 ",\n scr= "^(scr2str sc)^",\n istate= "^(istate2str is));
1472 (** find the next stactic in a script **)
1474 datatype appy = (*ExprVal in the sense of denotational semantics*)
1475 Appy of (*applicable stac found, search stalled*)
1476 tac_ * (*tac_ associated (fun assod) with stac*)
1477 scrstate (*after determination of stac WN.18.8.03*)
1478 | Napp of (*stac found was not applicable;
1479 this mode may become Skip in Repeat, Try and Or*)
1480 env (*stack*) (*popped while nxt_up*)
1481 | Skip of (*for restart after Appy, for leaving iterations,
1482 for passing the value of scriptexpressions,
1483 and for finishing the script successfully*)
1484 term * env (*stack*);
1486 (*appy, nxt_up, nstep_up scanning for next_tac.
1487 search is clearly separated into (1)-(2):
1488 (1) appy is recursive descent;
1489 (2) nxt_up resumes interpretation at a location somewhere in the script;
1490 nstep_up does only get to the parentnode of the scriptexpr.
1492 * call of (2) means _always_ that in this branch below
1493 there was an applicable stac (Repeat, Or e1, ...)
1497 datatype appy_ = (*as argument in nxt_up, nstep_up, from appy*)
1498 (* Appy is only (final) returnvalue, not argument during search
1499 |*) Napp_ (*ev. detects 'script is not appropriate for this example'*)
1500 | Skip_; (*detects 'script successfully finished'
1501 also used as init-value for resuming; this works,
1502 because 'nxt_up Or e1' treats as Appy*)
1504 fun appy thy ptp E l
1505 (t as Const ("Let",_) $ e $ (Abs (i,T,b))) a v =
1506 (* val (thy, ptp, E, l, t as Const ("Let",_) $ e $ (Abs (i,T,b)),a, v)=
1507 (thy, ptp, E, up@[R,D], body, a, v);
1508 appy thy ptp E l t a v;
1510 ((*writeln("### appy Let$e$Abs: is=");
1511 writeln(istate2str (ScrState (E,l,a,v,Sundef,false)));*)
1512 case appy thy ptp E (l@[L,R]) e a v of
1514 let (*val _= writeln("### appy Let "^(term2str t));
1515 val _= writeln("### appy Let: Skip res ="^(term2str res));*)
1516 (*val (i',b') = variant_abs (i,T,b); WN.15.5.03
1517 val i = mk_Free(i',T); WN.15.5.03 *)
1518 val E' = upd_env E (Free (i,T), res);
1519 in appy thy ptp E' (l@[R,D]) b a v end
1522 | appy (thy as (th,sr)) ptp E l
1523 (t as Const ("Script.While"(*1*),_) $ c $ e $ a) _ v = (*ohne n. 28.9.00*)
1524 ((*writeln("### appy While $ c $ e $ a, upd_env= "^
1525 (subst2str (upd_env E (a,v))));*)
1526 if eval_true_ th sr (subst_atomic (upd_env E (a,v)) c)
1527 then appy thy ptp E (l@[L,R]) e (SOME a) v
1530 | appy (thy as (th,sr)) ptp E l
1531 (t as Const ("Script.While"(*2*),_) $ c $ e) a v =(*ohne nachdenken 28.9.00*)
1532 ((*writeln("### appy While $ c $ e, upd_env= "^
1533 (subst2str (upd_env_opt E (a,v))));*)
1534 if eval_true_ th sr (subst_atomic (upd_env_opt E (a,v)) c)
1535 then appy thy ptp E (l@[R]) e a v
1538 | appy (thy as (th,sr)) ptp E l (t as Const ("If",_) $ c $ e1 $ e2) a v =
1539 ((*writeln("### appy If: t= "^(term2str t));
1540 writeln("### appy If: c= "^(term2str(subst_atomic(upd_env_opt E(a,v))c)));
1541 writeln("### appy If: thy= "^(fst thy));*)
1542 if eval_true_ th sr (subst_atomic (upd_env_opt E (a,v)) c)
1543 then ((*writeln("### appy If: true");*)appy thy ptp E (l@[L,R]) e1 a v)
1544 else ((*writeln("### appy If: false");*)appy thy ptp E (l@[ R]) e2 a v))
1545 (* val (thy, ptp, E, l, (Const ("Script.Repeat",_) $ e $ a), _, v) =
1546 (thy, ptp, E, (l@[R]), e, a, v);
1548 | appy thy ptp E (*env*) l
1549 (Const ("Script.Repeat"(*1*),_) $ e $ a) _ v =
1550 ((*writeln("### appy Repeat a: ");*)
1551 appy thy ptp E (*env*) (l@[L,R]) e (SOME a) v)
1552 (* val (thy, ptp, E, l, (Const ("Script.Repeat",_) $ e), _, v) =
1553 (thy, ptp, E, (l@[R]), e, a, v);
1555 | appy thy ptp E (*env*) l
1556 (Const ("Script.Repeat"(*2*),_) $ e) a v =
1557 ((*writeln("3### appy Repeat: a= "^
1558 (Syntax.string_of_term (thy2ctxt (assoc_thy thy)) a));*)
1559 appy thy ptp E (*env*) (l@[R]) e a v)
1560 (* val (thy, ptp, E, l, (t as Const ("Script.Try",_) $ e $ a), _, v)=
1561 (thy, ptp, E, (l@[R]), e2, a, v);
1564 (t as Const ("Script.Try",_) $ e $ a) _ v =
1565 (case appy thy ptp E (l@[L,R]) e (SOME a) v of
1566 Napp E => ((*writeln("### appy Try "^
1567 (Syntax.string_of_term (thy2ctxt (assoc_thy thy)) t));*)
1570 (* val (thy, ptp, E, l, (t as Const ("Script.Try",_) $ e), _, v)=
1571 (thy, ptp, E, (l@[R]), e2, a, v);
1572 val (thy, ptp, E, l, (t as Const ("Script.Try",_) $ e), _, v)=
1573 (thy, ptp, E, (l@[L,R]), e1, a, v);
1576 (t as Const ("Script.Try",_) $ e) a v =
1577 (case appy thy ptp E (l@[R]) e a v of
1578 Napp E => ((*writeln("### appy Try "^
1579 (Syntax.string_of_term (thy2ctxt (assoc_thy thy)) t));*)
1585 (Const ("Script.Or"(*1*),_) $e1 $ e2 $ a) _ v =
1586 (case appy thy ptp E (l@[L,L,R]) e1 (SOME a) v of
1587 Appy lme => Appy lme
1588 | _ => appy thy ptp E (*env*) (l@[L,R]) e2 (SOME a) v)
1591 (Const ("Script.Or"(*2*),_) $e1 $ e2) a v =
1592 (case appy thy ptp E (l@[L,R]) e1 a v of
1593 Appy lme => Appy lme
1594 | _ => appy thy ptp E (l@[R]) e2 a v)
1596 (* val (thy, ptp, E, l, (Const ("Script.Seq",_) $ e1 $ e2 $ a), _, v)=
1597 (thy, ptp, E,(up@[R]),e2, a, v);
1598 val (thy, ptp, E, l, (Const ("Script.Seq",_) $ e1 $ e2 $ a), _, v)=
1599 (thy, ptp, E,(up@[R,D]),body, a, v);
1602 (Const ("Script.Seq"(*1*),_) $ e1 $ e2 $ a) _ v =
1603 ((*writeln("### appy Seq $ e1 $ e2 $ a, upd_env= "^
1604 (subst2str (upd_env E (a,v))));*)
1605 case appy thy ptp E (l@[L,L,R]) e1 (SOME a) v of
1606 Skip (v,E) => appy thy ptp E (l@[L,R]) e2 (SOME a) v
1609 (* val (thy, ptp, E, l, (Const ("Script.Seq",_) $ e1 $ e2), _, v)=
1610 (thy, ptp, E,(up@[R]),e2, a, v);
1611 val (thy, ptp, E, l, (Const ("Script.Seq",_) $ e1 $ e2), _, v)=
1612 (thy, ptp, E,(l@[R]), e2, a, v);
1613 val (thy, ptp, E, l, (Const ("Script.Seq",_) $ e1 $ e2), _, v)=
1614 (thy, ptp, E,(up@[R,D]),body, a, v);
1617 (Const ("Script.Seq",_) $ e1 $ e2) a v =
1618 (case appy thy ptp E (l@[L,R]) e1 a v of
1619 Skip (v,E) => appy thy ptp E (l@[R]) e2 a v
1622 (*.a leaf has been found*)
1623 | appy (thy as (th,sr)) (pt, p) E l t a v =
1624 (* val (thy as (th,sr),(pt, p),E, l, t, a, v) =
1625 (thy, ptp, E, up@[R,D], body, a, v);
1626 val (thy as (th,sr),(pt, p),E, l, t, a, v) =
1627 (thy, ptp, E, l@[L,R], e, a, v);
1628 val (thy as (th,sr),(pt, p),E, l, t, a, v) =
1629 (thy, ptp, E,(l@[R]), e, a, v);
1631 (case handle_leaf "next " th sr E a v t of
1632 (* val (a', Expr s) = handle_leaf "next " th sr E a v t;
1634 (a', Expr s) => Skip (s, E)
1635 (* val (a', STac stac) = handle_leaf "next " th sr E a v t;
1637 | (a', STac stac) =>
1639 (*val _= writeln("### appy t, vor stac2tac_ is=");
1640 val _= writeln(istate2str (ScrState (E,l,a',v,Sundef,false)));*)
1641 val (m,m') = stac2tac_ pt (assoc_thy th) stac
1643 Subproblem _ => Appy (m', (E,l,a',tac_2res m',Sundef,false))
1644 | _ => (case applicable_in p pt m of
1645 (* val Appl m' = applicable_in p pt m;
1648 ((*writeln("### appy: Appy");*)
1649 Appy (m', (E,l,a',tac_2res m',Sundef,false)))
1650 | _ => ((*writeln("### appy: Napp");*)Napp E))
1654 (* val (scr as Script sc, l, t as Const ("Let",_) $ _) =
1655 (Script sc, up, go up sc);
1656 nxt_up thy ptp (Script sc) E l ay t a v;
1658 val (thy,ptp,scr as (Script sc),E,l, ay, t as Const ("Let",_) $ _, a, v)=
1659 (thy,ptp,Script sc, E,up,ay, go up sc, a, v);
1660 nxt_up thy ptp scr E l ay t a v;
1662 fun nxt_up thy ptp (scr as (Script sc)) E l ay
1663 (t as Const ("Let",_) $ _) a v = (*comes from let=...*)
1664 ((*writeln("### nxt_up1 Let$e: is=");
1665 writeln(istate2str (ScrState (E,l,a,v,Sundef,false)));*)
1667 then nstep_up thy ptp scr E (drop_last l) Napp_ a v
1669 let val up = drop_last l;
1670 val (Const ("Let",_) $ e $ (Abs (i,T,body))) = go up sc;
1671 val i = mk_Free (i, T);
1672 val E = upd_env E (i, v);
1673 (*val _= writeln("### nxt_up2 Let$e: is=");
1674 val _= writeln(istate2str (ScrState (E,l,a,v,Sundef,false)));*)
1675 in case appy thy ptp (E) (up@[R,D]) body a v of
1676 Appy lre => Appy lre
1677 | Napp E => nstep_up thy ptp scr E up Napp_ a v
1678 | Skip (v,E) => nstep_up thy ptp scr E up Skip_ a v end)
1680 | nxt_up thy ptp scr E l ay
1681 (t as Abs (_,_,_)) a v =
1682 ((*writeln("### nxt_up Abs: "^
1683 (Syntax.string_of_term (thy2ctxt (assoc_thy thy)) t));*)
1684 nstep_up thy ptp scr E (*enr*) l ay a v)
1686 | nxt_up thy ptp scr E l ay
1687 (t as Const ("Let",_) $ e $ (Abs (i,T,b))) a v =
1688 ((*writeln("### nxt_up Let$e$Abs: is=");
1689 writeln(istate2str (ScrState (E,l,a,v,Sundef,false)));*)
1690 (*writeln("### nxt_up Let e Abs: "^
1691 (Syntax.string_of_term (thy2ctxt (assoc_thy thy)) t));*)
1692 nstep_up thy ptp scr (*upd_env*) E (*a,v)*)
1693 (*eno,upd_env env (iar,res),iar,res,saf*) l ay a v)
1695 (*no appy_: never causes Napp -> Helpless*)
1696 | nxt_up (thy as (th,sr)) ptp scr E l _
1697 (Const ("Script.While"(*1*),_) $ c $ e $ _) a v =
1698 if eval_true_ th sr (subst_atomic (upd_env_opt E (a,v)) c)
1699 then case appy thy ptp E (l@[L,R]) e a v of
1701 | Napp E => nstep_up thy ptp scr E l Skip_ a v
1702 | Skip (v,E) => nstep_up thy ptp scr E l Skip_ a v
1703 else nstep_up thy ptp scr E l Skip_ a v
1705 (*no appy_: never causes Napp - Helpless*)
1706 | nxt_up (thy as (th,sr)) ptp scr E l _
1707 (Const ("Script.While"(*2*),_) $ c $ e) a v =
1708 if eval_true_ th sr (subst_atomic (upd_env_opt E (a,v)) c)
1709 then case appy thy ptp E (l@[R]) e a v of
1711 | Napp E => nstep_up thy ptp scr E l Skip_ a v
1712 | Skip (v,E) => nstep_up thy ptp scr E l Skip_ a v
1713 else nstep_up thy ptp scr E l Skip_ a v
1715 (* val (scr, l) = (Script sc, up);
1717 | nxt_up thy ptp scr E l ay (Const ("If",_) $ _ $ _ $ _) a v =
1718 nstep_up thy ptp scr E l ay a v
1720 | nxt_up thy ptp scr E l _ (*no appy_: there was already a stac below*)
1721 (Const ("Script.Repeat"(*1*),T) $ e $ _) a v =
1722 (case appy thy ptp (*upd_env*) E (*a,v)*) ((l@[L,R]):loc_) e a v of
1724 | Napp E => ((*writeln("### nxt_up Repeat a: ");*)
1725 nstep_up thy ptp scr E l Skip_ a v)
1726 | Skip (v,E) => ((*writeln("### nxt_up Repeat: Skip res ="^
1727 (Sign.string_of_term(sign_of (assoc_thy thy)) res'));*)
1728 nstep_up thy ptp scr E l Skip_ a v))
1730 | nxt_up thy ptp scr E l _ (*no appy_: there was already a stac below*)
1731 (Const ("Script.Repeat"(*2*),T) $ e) a v =
1732 (case appy thy ptp (*upd_env*) E (*a,v)*) ((l@[R]):loc_) e a v of
1734 | Napp E => ((*writeln("### nxt_up Repeat a: ");*)
1735 nstep_up thy ptp scr E l Skip_ a v)
1736 | Skip (v,E) => ((*writeln("### nxt_up Repeat: Skip res ="^
1737 (Sign.string_of_term(sign_of (assoc_thy thy)) res'));*)
1738 nstep_up thy ptp scr E l Skip_ a v))
1739 (* val (thy, ptp, scr, E, l, _,(t as Const ("Script.Try",_) $ e $ _), a, v) =
1740 (thy, ptp, (Script sc),
1741 E, up, ay,(go up sc), a, v);
1743 | nxt_up thy ptp scr E l _ (*makes Napp to Skip*)
1744 (t as Const ("Script.Try",_) $ e $ _) a v =
1745 ((*writeln("### nxt_up Try "^
1746 (Syntax.string_of_term (thy2ctxt (assoc_thy thy)) t));*)
1747 nstep_up thy ptp scr E l Skip_ a v )
1748 (* val (thy, ptp, scr, E, l, _,(t as Const ("Script.Try",_) $ e), a, v) =
1749 (thy, ptp, (Script sc),
1750 E, up, ay,(go up sc), a, v);
1752 | nxt_up thy ptp scr E l _ (*makes Napp to Skip*)
1753 (t as Const ("Script.Try"(*2*),_) $ e) a v =
1754 ((*writeln("### nxt_up Try "^
1755 (Syntax.string_of_term (thy2ctxt (assoc_thy thy)) t));*)
1756 nstep_up thy ptp scr E l Skip_ a v)
1759 | nxt_up thy ptp scr E l ay
1760 (Const ("Script.Or",_) $ _ $ _ $ _) a v = nstep_up thy ptp scr E l ay a v
1762 | nxt_up thy ptp scr E l ay
1763 (Const ("Script.Or",_) $ _ $ _) a v = nstep_up thy ptp scr E l ay a v
1765 | nxt_up thy ptp scr E l ay
1766 (Const ("Script.Or",_) $ _ ) a v =
1767 nstep_up thy ptp scr E (drop_last l) ay a v
1768 (* val (thy, ptp, scr, E, l, ay, (Const ("Script.Seq",_) $ _ $ _ $ _), a, v) =
1769 (thy, ptp, (Script sc),
1770 E, up, ay,(go up sc), a, v);
1772 | nxt_up thy ptp scr E l ay (*all has been done in (*2*) below*)
1773 (Const ("Script.Seq"(*1*),_) $ _ $ _ $ _) a v =
1774 nstep_up thy ptp scr E l ay a v
1775 (* val (thy, ptp, scr, E, l, ay, (Const ("Script.Seq",_) $ _ $ e2), a, v) =
1776 (thy, ptp, (Script sc),
1777 E, up, ay,(go up sc), a, v);
1779 | nxt_up thy ptp scr E l ay (*comes from e2*)
1780 (Const ("Script.Seq"(*2*),_) $ _ $ e2) a v =
1781 nstep_up thy ptp scr E l ay a v
1782 (* val (thy, ptp, scr, E, l, ay, (Const ("Script.Seq",_) $ _), a, v) =
1783 (thy, ptp, (Script sc),
1784 E, up, ay,(go up sc), a, v);
1786 | nxt_up thy ptp (scr as Script sc) E l ay (*comes from e1*)
1787 (Const ("Script.Seq",_) $ _) a v =
1789 then nstep_up thy ptp scr E (drop_last l) Napp_ a v
1791 let val up = drop_last l;
1792 val Const ("Script.Seq"(*2*),_) $ _ $ e2 = go up sc;
1793 in case appy thy ptp E (up@[R]) e2 a v of
1795 | Napp E => nstep_up thy ptp scr E up Napp_ a v
1796 | Skip (v,E) => nstep_up thy ptp scr E up Skip_ a v end
1798 | nxt_up (thy,_) ptp scr E l ay t a v =
1799 raise error ("nxt_up not impl for "^
1800 (Syntax.string_of_term (thy2ctxt (assoc_thy thy)) t))
1802 (* val (thy, ptp, (Script sc), E, l, ay, a, v)=
1803 (thy, ptp, scr, E, l, Skip_, a, v);
1804 val (thy, ptp, (Script sc), E, l, ay, a, v)=
1805 (thy, ptp, sc, E, l, Skip_, a, v);
1807 and nstep_up thy ptp (Script sc) E l ay a v =
1808 ((*writeln("### nstep_up from: "^(loc_2str l));
1809 writeln("### nstep_up from: "^
1810 (Syntax.string_of_term (thy2ctxt (assoc_thy thy)) (go l sc)));*)
1814 val up = drop_last l;
1815 in ((*writeln("### nstep_up to: "^
1816 (Syntax.string_of_term (thy2ctxt (assoc_thy thy)) (go up sc)));*)
1817 nxt_up thy ptp (Script sc) E up ay (go up sc) a v ) end
1818 else (*interpreted to end*)
1819 if ay = Skip_ then Skip (v, E) else Napp E
1822 (* decide for the next applicable stac in the script;
1823 returns (stactic, value) - the value in case the script is finished
1824 12.8.02: ~~~~~ and no assumptions ??? FIXME ???
1825 20.8.02: must return p in case of finished, because the next script
1826 consulted need not be the calling script:
1827 in case of detail ie. _inserted_ PrfObjs, the next stac
1828 has to searched in a script with PblObj.status<>Complete !
1829 (.. not true for other details ..PrfObj ??????????????????
1830 20.8.02: do NOT return safe (is only changed in locate !!!)
1832 (* val (thy, (pt,p), Rfuns {next_rule=ne,...}, RrlsState (f,f',rss,_)) =
1833 (thy', (pt,p), sc, RrlsState (ii t));
1834 val (thy, (pt,p), Rfuns {next_rule=ne,...}, RrlsState (f,f',rss,_)) =
1835 (thy', (pt',p'), sc, is');
1837 fun next_tac (thy,_) (pt,p) (Rfuns {next_rule,...}) (RrlsState(f,f',rss,_))=
1838 if f = f' then (End_Detail' (f',[])(*8.6.03*), Uistate,
1839 (f', Sundef(*FIXME is no value of next_tac! vor 8.6.03*)))
1841 else (case next_rule rss f of
1842 NONE => (Empty_Tac_, Uistate, (e_term, Sundef)) (*helpless*)
1843 (* val SOME (Thm (id,thm)) = next_rule rss f;
1845 | SOME (Thm (id,thm))(*8.6.03: muss auch f' liefern ?!!*) =>
1846 (Rewrite' (thy, "e_rew_ord", e_rls,(*!?!8.6.03*) false,
1847 (id, string_of_thmI thm), f,(e_term,[(*!?!8.6.03*)])),
1848 Uistate, (e_term, Sundef))) (*next stac*)
1850 (* val(thy, ptp as (pt,(p,_)), sc as Script (h $ body),ScrState (E,l,a,v,s,b))=
1851 ((thy',srls), (pt,pos), sc, is);
1853 | next_tac thy (ptp as (pt,(p,_)):ptree * pos') (sc as Script (h $ body))
1854 (ScrState (E,l,a,v,s,b)) =
1855 ((*writeln("### next_tac-----------------: E= ");
1856 writeln( istate2str (ScrState (E,l,a,v,s,b)));*)
1857 case if l=[] then appy thy ptp E [R] body NONE v
1858 else nstep_up thy ptp sc E l Skip_ a v of
1859 Skip (v,_) => (*finished*)
1860 (case par_pbl_det pt p of
1862 let val (_,pblID,_) = get_obj g_spec pt p';
1863 in (Check_Postcond' (pblID, (v, [(*8.6.03 NO asms???*)])),
1864 e_istate, (v,s)) end
1865 | (_,p',rls') => (End_Detail' (e_term,[])(*8.6.03*), e_istate, (v,s)))
1866 | Napp _ => (Empty_Tac_, e_istate, (e_term, Sundef)) (*helpless*)
1867 | Appy (m', scrst as (_,_,_,v,_,_)) => (m', ScrState scrst,
1868 (v, Sundef))) (*next stac*)
1870 | next_tac _ _ _ is = raise error ("next_tac: not impl for "^
1876 (*.create the initial interpreter state from the items of the guard.*)
1877 (* val (thy, itms, metID) = (thy, itms, mI);
1879 fun init_scrstate thy itms metID =
1880 let val actuals = itms2args thy metID itms;
1881 val scr as Script sc = (#scr o get_met) metID;
1882 val formals = formal_args sc
1883 (*expects same sequence of (actual) args in itms
1884 and (formal) args in met*)
1885 fun relate_args env [] [] = env
1886 | relate_args env _ [] =
1887 raise error ("ERROR in creating the environment for '"
1888 ^id_of_scr sc^"' from \nthe items of the guard of "
1889 ^metID2str metID^",\n\
1890 \formal arg(s), from the script,\
1891 \ miss actual arg(s), from the guards env:\n"
1892 ^(string_of_int o length) formals
1893 ^" formals: "^terms2str formals^"\n"
1894 ^(string_of_int o length) actuals
1895 ^" actuals: "^terms2str actuals)
1896 | relate_args env [] actual_finds = env (*may drop Find!*)
1897 | relate_args env (a::aa) (f::ff) =
1898 if type_of a = type_of f
1899 then relate_args (env @ [(a, f)]) aa ff else
1900 raise error ("ERROR in creating the environment for '"
1901 ^id_of_scr sc^"' from \nthe items of the guard of "
1902 ^metID2str metID^",\n\
1903 \different types of formal arg, from the script,\
1904 \ and actual arg, from the guards env:'\n\
1905 \formal: '"^term2str a^"::"^(type2str o type_of) a^"'\n\
1906 \actual: '"^term2str f^"::"^(type2str o type_of) f^"'\n\
1908 \formals: "^terms2str formals^"\n\
1909 \actuals: "^terms2str actuals)
1910 val env = relate_args [] formals actuals;
1911 in (ScrState (env,[],NONE,e_term,Safe,true), scr):istate * scr end;
1913 (*.decide, where to get script/istate from:
1914 (*1*) from PblObj.env: at begin of script if no init_form
1915 (*2*) from PblObj/PrfObj: if stac is in the middle of the script
1916 (*3*) from rls/PrfObj: in case of detail a ruleset.*)
1917 (* val (thy', (p,p_), pt) = (thy', (p,p_), pt);
1919 fun from_pblobj_or_detail' thy' (p,p_) pt =
1920 if member op = [Pbl,Met] p_
1921 then case get_obj g_env pt p of
1922 NONE => raise error "from_pblobj_or_detail': no istate"
1924 let val metID = get_obj g_metID pt p
1925 val {srls,...} = get_met metID
1926 in (srls, is, (#scr o get_met) metID) end
1928 let val (pbl,p',rls') = par_pbl_det pt p
1931 let val thy = assoc_thy thy'
1932 val PblObj{meth=itms,...} = get_obj I pt p'
1933 val metID = get_obj g_metID pt p'
1934 val {srls,...} = get_met metID
1935 in (*if last_elem p = 0 (*nothing written to pt yet*)
1936 then let val (is, sc) = init_scrstate thy itms metID
1937 in (srls, is, sc) end
1938 else*) (srls, get_istate pt (p,p_), (#scr o get_met) metID)
1941 (e_rls, (*FIXME: get from pbl or met !!!
1942 unused for Rrls in locate_gen, next_tac*)
1943 get_istate pt (p,p_),
1945 Rls {scr=scr,...} => scr
1946 | Seq {scr=scr,...} => scr
1947 | Rrls {scr=rfuns,...} => rfuns)
1950 (*.get script and istate from PblObj, see (*1*) above.*)
1951 fun from_pblobj' thy' (p,p_) pt =
1952 let val p' = par_pblobj pt p
1953 val thy = assoc_thy thy'
1954 val PblObj{meth=itms,...} = get_obj I pt p'
1955 val metID = get_obj g_metID pt p'
1956 val {srls,scr,...} = get_met metID
1957 in if last_elem p = 0 (*nothing written to pt yet*)
1958 then let val (is, scr) = init_scrstate thy itms metID
1959 in (srls, is, scr) end
1960 else (srls, get_istate pt (p,p_), scr)
1963 (*.get the stactics and problems of a script as tacs
1964 instantiated with the current environment;
1965 l is the location which generated the given formula.*)
1966 (*WN.12.5.03: quick-and-dirty repair for listexpressions*)
1967 fun is_spec_pos Pbl = true
1968 | is_spec_pos Met = true
1969 | is_spec_pos _ = false;
1971 (*. fetch _all_ tactics from script .*)
1972 fun sel_rules _ (([],Res):pos') =
1973 raise PTREE "no tactics applicable at the end of a calculation"
1974 | sel_rules pt (p,p_) =
1976 then [get_obj g_tac pt p]
1978 let val pp = par_pblobj pt p;
1979 val thy' = (get_obj g_domID pt pp):theory';
1980 val thy = assoc_thy thy';
1981 val metID = get_obj g_metID pt pp;
1982 val metID' =if metID =e_metID then(thd3 o snd3)(get_obj g_origin pt pp)
1984 val {scr=Script sc,srls,...} = get_met metID'
1985 val ScrState (env,_,a,v,_,_) = get_istate pt (p,p_);
1986 in map ((stac2tac pt thy) o rep_stacexpr o #2 o
1987 (handle_leaf "selrul" thy' srls env a v)) (stacpbls sc) end;
1989 > val Script sc = (#scr o get_met) ("SqRoot.thy","sqrt-equ-test");
1990 > val env = [((term_of o the o (parse Isac.thy)) "bdv",
1991 (term_of o the o (parse Isac.thy)) "x")];
1992 > map ((stac2tac pt thy) o #2 o(subst_stacexpr env NONE e_term)) (stacpbls sc);
1996 (*. fetch tactics from script and filter _applicable_ tactics;
1997 in case of Rewrite_Set* go down to _atomic_ rewrite-tactics .*)
1998 fun sel_appl_atomic_tacs _ (([],Res):pos') =
1999 raise PTREE "no tactics applicable at the end of a calculation"
2000 | sel_appl_atomic_tacs pt (p,p_) =
2002 then [get_obj g_tac pt p]
2004 let val pp = par_pblobj pt p
2005 val thy' = (get_obj g_domID pt pp):theory'
2006 val thy = assoc_thy thy'
2007 val metID = get_obj g_metID pt pp
2008 val metID' =if metID = e_metID
2009 then (thd3 o snd3) (get_obj g_origin pt pp)
2011 val {scr=Script sc,srls,erls,rew_ord'=ro,...} = get_met metID'
2012 val ScrState (env,_,a,v,_,_) = get_istate pt (p,p_)
2013 val alltacs = (*we expect at least 1 stac in a script*)
2014 map ((stac2tac pt thy) o rep_stacexpr o #2 o
2015 (handle_leaf "selrul" thy' srls env a v)) (stacpbls sc)
2017 Frm => get_obj g_form pt p
2018 | Res => (fst o (get_obj g_result pt)) p
2019 (*WN071231 ? replace atomic_appl_tacs with applicable_in (ineff!) ?*)
2020 in (distinct o flat o
2021 (map (atomic_appl_tacs thy ro erls f))) alltacs end;
2029 (* use"ME/script.sml";