1 (* convert sml-datatypes to xml for libisabelle and for kbase.
2 authors: Walther Neuper 2003, 2016
3 (c) due to copyright terms
6 signature DATATYPES = (*TODO: redo with xml_of/to *)
8 val authors2xml : int -> string -> string list -> xml
9 val calc2xml : int -> ThyC.id * Rule_Def.calc -> xml
10 val calcrefs2xml : int -> ThyC.id * Rule_Def.calc list -> xml
11 val contthy2xml : int -> Thy_Present.contthy -> xml
12 val extref2xml : int -> string -> string -> xml
14 ''a -> (''a * (Term.term * Term.term)) list -> Term.term list
15 val formula2xml : int -> Term.term -> xml
16 val formulae2xml : int -> Term.term list -> xml
18 val id2xml : int -> string list -> string
19 val ints2xml : int -> int list -> string
20 val itm_2xml : int -> I_Model.feedback -> xml
21 val itms2xml : int -> (int * Model_Def.variants * bool * string * I_Model.feedback) list ->
23 val keref2xml : int -> Specify.ketype -> Specify.kestoreID -> xml
25 int -> I_Model.T -> (bool * Term.term) list -> xml
26 val modspec2xml : int -> Ctree.ocalhd -> xml
29 (string * (Term.term * Term.term)) list -> Term.term list -> string
30 val pos'2xml : int -> string * (int list * Pos.pos_) -> string
31 val pos'calchead2xml : int -> Pos.pos' * Ctree.ocalhd -> xml
32 val pos_2xml : int -> Pos.pos_ -> string
33 val posform2xml : int -> Pos.pos' * Term.term -> xml
34 val posformhead2xml : int -> Pos.pos' * Ctree.ptform -> string
35 val posformheads2xml : int -> (Pos.pos' * Ctree.ptform) list -> xml
36 val posforms2xml : int -> (Pos.pos' * Term.term) list -> xml
37 val posterms2xml : int -> (Pos.pos' * term) list -> xml
38 val precond2xml : int -> bool * Term.term -> xml
39 val preconds2xml : int -> (bool * Term.term) list -> xml
40 val rls2xml : int -> ThyC.id * Rule_Set.T -> xml
41 val rule2xml : int -> Check_Unique.id -> Rule.rule -> xml
42 val rules2xml : int -> Check_Unique.id -> Rule.rule list -> xml
43 val scr2xml : int -> Program.T -> xml
44 val spec2xml : int -> Spec.T -> xml
45 val sub2xml : int -> Term.term * Term.term -> xml
46 val subs2xml : int -> Subst.input -> xml
47 val subst2xml : int -> subst -> xml
48 val tac2xml : int -> Tactic.input -> xml
49 val tacs2xml : int -> Tactic.input list -> xml
50 val theref2xml : int -> ThyC.id -> string -> xstring -> string
51 val thm''2xml : int -> thm -> xml
52 val thmstr2xml : int -> string -> xml
55 (*------------------------------------------------------------------
56 structure datatypes:DATATYPES =
57 (*structure datatypes =*)
59 ------------------------------------------------------------------*)
61 (*** convert sml-datatypes to xml for kbase ***)
62 (* NOTE: funs with siblings in xml_of_* are together with them in 'xml for libisabelle' *)
67 let fun id2x _ [] = ""
68 | id2x j (s::ss) = (indt j) ^ "<STRING> " ^ s ^ " </STRING>\n" ^
70 in (indt j) ^ "<STRINGLIST>\n" ^
71 (id2x (j + indentation) ids) ^
72 (indt j) ^ "</STRINGLIST>\n" end;
73 (* writeln(id2xml 8 ["linear","univariate","equation"]);
75 <STRING>linear</STRING>
76 <STRING>univariate</STRING>
77 <STRING>equation</STRING>
79 fun calc2xml j (thyID, (scrop, (rewop, _))) =
81 indt (j+i) ^ "<STRING>\n" ^ scrop ^ "</STRING>\n" ^
82 indt (j+i) ^ "<GUH>\n" ^ Thy_Write.cal2guh ("IsacKnowledge",
83 thyID) scrop ^ "</GUH>\n" ^
84 indt (j+i) ^ "<TERMOP>\n" ^ rewop ^ "</TERMOP>\n" ^
86 (*replace by 'fun calc2xml' as developed for thy in 0607*)
87 fun calc2xmlOLD _ (scr_op, (isa_op, _)) =
88 indt i ^ "<CALCULATE> (" ^ scr_op ^ ", (" ^ isa_op ^ ")) </CALCULATE>\n";
89 fun calcs2xmlOLD _ [] = "" (*TODO replace with 'strs2xml'*)
90 | calcs2xmlOLD j (r::rs) = calc2xmlOLD j r ^ calcs2xmlOLD j rs;
92 (*.for creating a href for a rule within an rls's rule list;
93 the guh points to the thy of definition of the rule, NOT of use in rls.*)
94 fun rule2xml _ _ Rule.Erule =
95 error "rule2xml called with 'Erule'"
96 | rule2xml j _ (Rule.Thm (thmDeriv, _)) =
98 indt (j+i) ^ "<TAG> Theorem </TAG>\n" ^
99 indt (j+i) ^ "<STRING> " ^ ThmC.cut_id thmDeriv ^ " </STRING>\n" ^
100 indt (j+i) ^ "<GUH> " ^
101 Thy_Write.thm2guh (Thy_Read.thy_containing_thm thmDeriv) (ThmC.cut_id thmDeriv) ^ " </GUH>\n" ^
103 | rule2xml _ _ (Rule.Eval (_(*termop*), _)) = ""
104 (*FIXXXXXXXME.WN060714 in rls make Eval : calc -> rule [add scriptop!]
105 see smltest/../datatypes.sml !
106 indt j ^ "<RULE>\n" ^
107 indt (j+i) ^ "<STRING> " ^ termop ^ " </STRING>\n" ^
108 indt (j+i) ^ "<GUH> " ^ cal2guh (thy_containing_cal thyID termop)
109 termop ^ " </GUH>\n" ^
112 | rule2xml _ _ (Rule.Cal1 (_(*termop*), _)) = ""
113 | rule2xml j thyID (Rule.Rls_ rls) =
114 let val rls' = (#id o Rule_Set.rep) rls
116 indt j ^ "<RULE>\n" ^
117 indt (j+i) ^ "<TAG> Ruleset </TAG>\n" ^
118 indt (j+i) ^ "<STRING> " ^ rls' ^ " </STRING>\n" ^
119 indt (j+i) ^ "<GUH> " ^ Thy_Write.rls2guh (Thy_Read.thy_containing_rls thyID rls') rls' ^ " </GUH>\n" ^
122 fun rules2xml _ _ [] = ""
123 | rules2xml j thyID (r::rs) = rule2xml j thyID r ^ rules2xml j thyID rs;
127 | filt ((s, (t1, t2)) :: ps) =
128 if str = s then (t1 $ t2) :: filt ps else filt ps
130 fun pattern2xml j p where_ =
131 (case filterpbl "#Given" p of
132 [] => (indt j) ^ "<GIVEN> </GIVEN>\n"
133 (* val gis = filterpbl "#Given" p;
135 | gis => (indt j) ^ "<GIVEN>\n" ^ terms2xml' j gis ^
136 (indt j) ^ "</GIVEN>\n")
139 [] => (indt j) ^ "<WHERE> </WHERE>\n"
140 | whs => (indt j) ^ "<WHERE>\n" ^ terms2xml' j whs ^
141 (indt j) ^ "</WHERE>\n")
143 (case filterpbl "#Find" p of
144 [] => (indt j) ^ "<FIND> </FIND>\n"
145 | fis => (indt j) ^ "<FIND>\n" ^ terms2xml' j fis ^
146 (indt j) ^ "</FIND>\n")
148 (case filterpbl "#Relate" p of
149 [] => (indt j) ^ "<RELATE> </RELATE>\n"
150 | res => (indt j) ^ "<RELATE>\n" ^ terms2xml' j res ^
151 (indt j) ^ "</RELATE>\n");
153 writeln(pattern2xml 3 ((#ppc o get_pbt)
154 ["squareroot","univariate","equation","test"]) []);
157 (*url to a source external to isac*)
158 fun extref2xml j linktext url =
159 indt j ^ "<EXTREF>\n" ^
160 indt (j+i) ^ "<TEXT> " ^ linktext ^ " </TEXT>\n" ^
161 indt (j+i) ^ "<URL> " ^ url ^ " </URL>\n" ^
162 indt j ^ "</EXTREF>\n";
163 fun theref2xml j thyID typ xstring =
164 let val guh = Thy_Write.theID2guh ["IsacKnowledge", thyID, typ, xstring]
165 val typ' = (implode o (drop_last_n 1) o Symbol.explode) typ
166 in indt j ^ "<KESTOREREF>\n" ^
167 indt (j+i) ^ "<TAG> " ^ typ' ^ " </TAG>\n" ^
168 indt (j+i) ^ "<ID> " ^ xstring ^ " </ID>\n" ^
169 indt (j+i) ^ "<GUH> " ^ guh ^ " </GUH>\n" ^
170 indt j ^ "</KESTOREREF>\n"
172 fun keref2xml j typ kestoreID =
173 let val id = strs2str' kestoreID
174 val guh = Specify.kestoreID2guh typ kestoreID
175 in indt j ^ "<KESTOREREF>\n" ^
176 indt (j+i) ^ "<TAG> " ^ Specify.ketype2str' typ ^ "</TAG>\n" ^
177 indt (j+i) ^ "<ID> " ^ id ^ " </ID>\n" ^
178 indt (j+i) ^ "<GUH> " ^ guh ^ " </GUH>\n" ^
179 indt j ^ "</KESTOREREF>\n"
181 fun authors2xml j str auts =
182 let fun autx _ [] = ""
183 | autx j (s::ss) = (indt j) ^ "<STRING> " ^ s ^ " </STRING>\n" ^
185 in indt j ^ "<"^str^">\n" ^
187 indt j ^ "</"^str^">\n"
189 (* writeln(authors2xml 2 "MATHAUTHORS" []);
190 writeln(authors2xml 2 "MATHAUTHORS"
191 ["isac-team 2001", "Richard Lang 2003"]);
193 fun scr2xml j Rule.Empty_Prog =
194 indt j ^"<SCRIPT> </SCRIPT>\n"
195 | scr2xml j (Rule.Prog term) =
196 if term = TermC.empty
197 then indt j ^"<SCRIPT> </SCRIPT>\n"
198 else indt j ^"<SCRIPT>\n"^
199 term2xml j (TermC.inst_abs term) ^ "\n" ^
200 indt j ^"</SCRIPT>\n"
201 | scr2xml j (Rule.Rfuns _) =
202 indt j ^"<REVERSREWRITE> reverse rewrite functions </REVERSREWRITE>\n";
204 fun calcref2xml j (thyID, (scrop, (_(*rewop*), _))) =
205 indt j ^ "<CALCREF>\n" ^
206 indt (j+i) ^ "<STRING> " ^ scrop ^ "</STRING>\n" ^
207 indt (j+i) ^ "<GUH> " ^ Thy_Write.cal2guh ("IsacKnowledge",
208 thyID) scrop ^ " </GUH>\n" ^
209 indt j ^ "</CALCREF>\n";
210 fun calcrefs2xml _ (_,[]) = ""
211 | calcrefs2xml j (thyID, cal::cs) =
212 calcref2xml j (thyID, cal) ^ calcrefs2xml j (thyID, cs);
214 fun prepa12xml j (terms, term) =
215 indt j ^"<PREPAT>\n"^
216 indt (j+i) ^"<PRECONDS>\n"^
217 terms2xml (j+2*i) terms ^
218 indt (j+i) ^"</PRECONDS>\n"^
219 indt (j+i) ^"<PATTERN>\n"^
220 term2xml (j+2*i) term ^
221 indt (j+i) ^"</PATTERN>\n"^
222 indt j ^"</PREPAT>\n";
223 fun prepat2xml _ [] = ""
224 | prepat2xml j (p::ps) = prepa12xml j p ^ prepat2xml j ps;
226 fun rls2xm j (thyID, seqrls, {id, preconds, rew_ord=(ord,_), erls,
227 srls, calc, rules, errpatts, scr}) =
228 indt j ^"<RULESET>\n"^
229 indt (j+i) ^"<ID> "^ id ^" </ID>\n"^
230 indt (j+i) ^"<TYPE> "^ seqrls ^" </TYPE>\n"^
231 indt (j+i) ^"<RULES>\n" ^
232 rules2xml (j+2*i) thyID rules ^
233 indt (j+i) ^"</RULES>\n" ^
234 indt (j+i) ^"<PRECONDS> " ^
235 terms2xml' (j+2*i) preconds ^
236 indt (j+i) ^"</PRECONDS>\n" ^
237 indt (j+i) ^"<ORDER>\n" ^
238 indt (j+2*i) ^ "<STRING> " ^ ord ^ " </STRING>\n" ^
239 (*WN060714 thy_isac_*-ord-*.xml not yet generated ................
240 indt (j+2*i) ^ "<GUH> " ^ ord2guh ("IsacKnowledge",
241 thyID) ord ^ " </GUH>\n" ^
242 ..................................................................*)
243 indt (j+i) ^"</ORDER>\n" ^
244 indt (j+i) ^"<ERLS>\n" ^
245 indt (j+2*i) ^ "<TAG> Ruleset </TAG>\n" ^
246 indt (j+2*i) ^ "<STRING> " ^ Rule_Set.id erls ^ " </STRING>\n" ^
247 indt (j+2*i) ^ "<GUH> " ^ Thy_Write.rls2guh ("IsacKnowledge", thyID)
248 (Rule_Set.id erls) ^ " </GUH>\n" ^
249 indt (j+i) ^"</ERLS>\n" ^
250 indt (j+i) ^"<SRLS>\n" ^
251 indt (j+2*i) ^ "<TAG> Ruleset </TAG>\n" ^
252 indt (j+2*i) ^ "<STRING> " ^ Rule_Set.id erls ^ " </STRING>\n" ^
253 indt (j+2*i) ^ "<GUH> " ^ Thy_Write.rls2guh ("IsacKnowledge", thyID)
254 (Rule_Set.id srls) ^ " </GUH>\n" ^
255 indt (j+i) ^"</SRLS>\n" ^
256 calcrefs2xml (j+i) (thyID, calc) ^
258 indt j ^"</RULESET>\n";
259 fun rls2xml j (thyID, Rule_Set.Empty) = rls2xml j (thyID, Rule_Set.empty)
260 | rls2xml j (thyID, Rule_Def.Repeat data) = rls2xm j (thyID, "Rls", data)
261 | rls2xml j (thyID, Rule_Set.Sequence data) = rls2xm j (thyID, "Seq", data)
262 | rls2xml j (thyID, Rule_Set.Rrls {id, prepat, rew_ord=(ord,_), erls, calc, errpatts, scr}) =
263 indt j ^"<RULESET>\n"^
264 indt (j+i) ^"<ID> "^ id ^" </ID>\n"^
265 indt (j+i) ^"<TYPE> Rrls </TYPE>\n"^
266 prepat2xml (j+i) prepat ^
267 indt (j+i) ^"<ORDER> " ^
268 indt (j+2*i) ^ "<TAG> Rewrite order </TAG>\n" ^
269 indt (j+2*i) ^ "<STRING> " ^ ord ^ " </STRING>\n" ^
270 (*WN060714 thy_isac_*-ord-*.xml not yet generated ................
271 indt (j+2*i) ^ "<GUH> " ^ ord2guh ("IsacKnowledge",
272 thyID) ord ^ " </GUH>\n" ^
273 .................................................................*)
274 indt (j+i) ^"</ORDER>\n" ^
275 indt (j+i) ^"<ERLS> " ^
276 indt (j+2*i) ^ "<TAG> Ruleset </TAG>\n" ^
277 indt (j+2*i) ^ "<STRING> " ^ Rule_Set.id erls ^ " </STRING>\n" ^
278 indt (j+2*i) ^ "<GUH> " ^ Thy_Write.rls2guh ("IsacKnowledge", thyID) (Rule_Set.id erls) ^ " </GUH>\n" ^
279 indt (j+i) ^"</ERLS>\n" ^
280 calcrefs2xml (j+i) (thyID, calc) ^
281 indt (j+i) ^"<SCRIPT>\n"^
282 scr2xml (j+2*i) scr ^
283 indt (j+i) ^" </SCRIPT>\n"^
284 indt j ^"</RULESET>\n";
286 (*** convert sml-datatypes to xml for libisabelle ***)
288 (** general types: lists, **)
290 fun xml_of_bool b = XML.Elem (("BOOL", []), [XML.Text (bool2str b)])
291 fun xml_to_bool (XML.Elem (("BOOL", []), [XML.Text b])) = string_to_bool b
292 | xml_to_bool tree = raise ERROR ("xml_to_bool: wrong XML.tree \n" ^ xmlstr 0 tree)
294 fun xml_to_ketype (XML.Elem (("KETYPE", []), [XML.Text str])) = Specify.str2ketype' str
295 | xml_to_ketype tree = raise ERROR ("xml_to_ketype: wrong XML.tree \n" ^ xmlstr 0 tree)
297 fun xml_of_str str = XML.Elem (("STRING", []), [XML.Text str])
298 fun xml_of_strs strs = XML.Elem (("STRINGLIST", []), map xml_of_str strs)
300 fun xml_to_str (XML.Elem (("STRING", []), [XML.Text str])) = str
301 | xml_to_str tree = raise ERROR ("xml_to_str: wrong XML.tree \n" ^ xmlstr 0 tree)
302 fun xml_to_strs (XML.Elem (("STRINGLIST", []), strs)) = map xml_to_str strs
303 | xml_to_strs tree = raise ERROR ("xml_to_strs: wrong XML.tree \n" ^ xmlstr 0 tree)
305 fun xml_of_int i = XML.Elem (("INT", []), [XML.Text (string_of_int i)])
307 XML.Elem (("INTLIST", []), map xml_of_int is)
309 fun xml_to_int (XML.Elem (("INT", []), [XML.Text i])) =
310 (case TermC.int_opt_of_string i of SOME i => i | _ => error "xml_to_int: int_of_str \<Rightarrow> NONE")
311 | xml_to_int tree = raise ERROR ("xml_to_int: wrong XML.tree \n" ^ xmlstr 0 tree)
312 fun xml_to_ints (XML.Elem (("INTLIST", []), is)) = map xml_to_int is
313 | xml_to_ints tree = raise ERROR ("xml_to_ints: wrong XML.tree \n" ^ xmlstr 0 tree)
315 (** isac datatypes **)
316 fun xml_of_pos tag (is, pp) =
317 XML.Elem ((tag, []), [
319 XML.Elem (("POS", []), [XML.Text (Pos.pos_2str pp)])])
320 fun xml_to_pos_ (XML.Elem (("POS", []), [XML.Text pp])) = Pos.str2pos_ pp
321 | xml_to_pos_ tree = raise ERROR ("xml_to_pos_: wrong XML.tree \n" ^ xmlstr 0 tree)
322 fun xml_to_pos (XML.Elem (("POSITION", []), [is, pp])) = (xml_to_ints is, xml_to_pos_ pp) (*: pos'*)
323 | xml_to_pos tree = raise ERROR ("xml_to_pos: wrong XML.tree \n" ^ xmlstr 0 tree)
325 fun xml_of_auto (Solve.Steps i) =
326 XML.Elem (("AUTO", []), [XML.Text "Step", XML.Text (string_of_int i)])
327 | xml_of_auto CompleteModel = XML.Elem (("AUTO", []), [XML.Text "CompleteModel"])
328 | xml_of_auto CompleteCalcHead = XML.Elem (("AUTO", []), [XML.Text "CompleteCalcHead"])
329 | xml_of_auto CompleteToSubpbl = XML.Elem (("AUTO", []), [XML.Text "CompleteToSubpbl"])
330 | xml_of_auto CompleteSubpbl = XML.Elem (("AUTO", []), [XML.Text "CompleteSubpbl"])
331 | xml_of_auto CompleteCalc = XML.Elem (("AUTO", []), [XML.Text "CompleteCalc"])
332 fun xml_to_auto (XML.Elem (("AUTO", []), [
333 XML.Elem (("STEP", []), [XML.Text i])])) = Solve.Steps (TermC.int_opt_of_string i |> the)
334 | xml_to_auto (XML.Elem (("AUTO", []), [XML.Text "CompleteModel"])) = Solve.CompleteModel
335 | xml_to_auto (XML.Elem (("AUTO", []), [XML.Text "CompleteCalcHead"])) = Solve.CompleteCalcHead
336 | xml_to_auto (XML.Elem (("AUTO", []), [XML.Text "CompleteToSubpbl"])) = Solve.CompleteToSubpbl
337 | xml_to_auto (XML.Elem (("AUTO", []), [XML.Text "CompleteSubpbl"])) = Solve.CompleteSubpbl
338 | xml_to_auto (XML.Elem (("AUTO", []), [XML.Text "CompleteCalc"])) = Solve.CompleteCalc
339 | xml_to_auto tree = raise ERROR ("xml_to_auto: wrong XML.tree \n" ^ xmlstr 0 tree)
343 | filt ((s, (t1, t2)) :: ps) =
344 if str = s then (t1 $ t2) :: filt ps else filt ps
347 fun xml_of_itm_ (I_Model.Cor (dts, _)) =
348 XML.Elem (("ITEM", [("status", "correct")]), [xml_of_term (O_Model.comp_dts' dts)])
349 | xml_of_itm_ (I_Model.Syn c) =
350 XML.Elem (("ITEM", [("status", "syntaxerror")]), [XML.Text c])
351 | xml_of_itm_ (I_Model.Typ c) =
352 XML.Elem (("ITEM", [("status", "typeerror")]), [XML.Text c])
353 (*type item also has 'False of cterm' set in preconds2xml WN 050618*)
354 | xml_of_itm_ (I_Model.Inc (dts, _)) =
355 XML.Elem (("ITEM", [("status", "incomplete")]), [xml_of_term (O_Model.comp_dts' dts)])
356 | xml_of_itm_ (I_Model.Sup dts) =
357 XML.Elem (("ITEM", [("status", "superfluous")]), [xml_of_term (O_Model.comp_dts' dts)])
358 | xml_of_itm_ (I_Model.Mis (d, pid)) =
359 XML.Elem (("ITEM", [("status", "missing")]), [xml_of_term (d $ pid)])
360 | xml_of_itm_ _ = error "xml_of_itm_: wrong argument"
361 fun xml_of_itms itms =
363 fun extract (_, _, _, _, itm_) = itm_
364 | extract _ = error "xml_of_itms.extract: wrong argument"
365 in map (xml_of_itm_ o extract) itms end
367 fun xml_of_precond (status, term) =
368 XML.Elem (("ITEM", [("status", if status then "correct" else "false")]), [xml_of_term term])
369 fun xml_of_preconds ps = map xml_of_precond ps
371 fun xml_of_model itms where_ =
373 fun eq str (_, _, _,field, _) = str = field
375 XML.Elem (("MODEL", []), [
376 XML.Elem (("GIVEN", []),
377 filter (eq "#Given") itms |> xml_of_itms),
378 XML.Elem (("WHERE", []),
379 xml_of_preconds where_),
380 XML.Elem (("FIND", []),
381 filter (eq "#Find") itms |> xml_of_itms),
382 XML.Elem (("RELATE", []),
383 filter (eq "#Relate") itms |> xml_of_itms)])
386 fun xml_of_spec (thyID, pblID, metID) =
387 XML.Elem (("SPECIFICATION", []), [
388 XML.Elem (("THEORYID", []), [XML.Text thyID]),
389 XML.Elem (("PROBLEMID", []), [xml_of_strs pblID]),
390 XML.Elem (("METHODID", []), [xml_of_strs metID])])
391 fun xml_to_spec (XML.Elem (("SPECIFICATION", []), [
392 XML.Elem (("THEORYID", []), [XML.Text thyID]),
393 XML.Elem (("PROBLEMID", []), [ps]),
394 XML.Elem (("METHODID", []), [ms])])) = (thyID, xml_to_strs ps, xml_to_strs ms)
395 | xml_to_spec tree = raise ERROR ("xml_to_spec: wrong XML.tree \n" ^ xmlstr 0 tree)
397 fun xml_of_variant (items, spec) =
398 XML.Elem (("VARIANT", []), [xml_of_strs items, xml_of_spec spec])
399 fun xml_to_variant (XML.Elem (("VARIANT", []), [items, spec])) =
400 (xml_to_strs items, xml_to_spec spec)
401 | xml_to_variant tree = raise ERROR ("xml_to_variant: wrong XML.tree \n" ^ xmlstr 0 tree)
403 fun xml_of_fmz [] = xml_of_fmz [Formalise.empty]
404 | xml_of_fmz vs = XML.Elem (("FORMALIZATION", []), map xml_of_variant vs)
405 fun xml_to_fmz (XML.Elem (("FORMALIZATION", []), vars)) = map xml_to_variant vars
406 | xml_to_fmz tree = raise ERROR ("xml_to_fmz: wrong XML.tree \n" ^ xmlstr 0 tree)
408 fun xml_of_modspec ((b, p_, head, gfr, pre, spec): Ctree.ocalhd) =
409 XML.Elem (("CALCHEAD", [("status", if b then "correct" else "incorrect")]), [
410 XML.Elem (("HEAD", []), [xml_of_term_NEW head]),
411 xml_of_model gfr pre,
412 XML.Elem (("BELONGSTO", []), [
413 XML.Text (case p_ of Pbl => "Pbl" | Met => "Met" | _ => "Und")]),
416 fun xml_of_posmodspec ((p: Pos.pos', (b, p_, head, gfr, pre, spec): Ctree.ocalhd)) =
417 XML.Elem (("CALCHEAD", [("status", if b then "correct" else "incorrect")]), [
418 xml_of_pos "POSITION" p,
419 XML.Elem (("HEAD", []), [xml_of_term_NEW head]),
420 xml_of_model gfr pre,
421 XML.Elem (("BELONGSTO", []), [
422 XML.Text (case p_ of Pbl => "Pbl" | Met => "Met" | _ => "Und")]),
425 (XML.Elem (("IMODEL", []), [
426 XML.Elem (("GIVEN", []), givens),
427 (*XML.Elem (("WHERE", []), wheres), ... Where is never input*)
428 XML.Elem (("FIND", []), finds),
429 XML.Elem (("RELATE", []), relates)])) =
430 ([In_Chead.Given (map xml_to_cterm givens),
431 In_Chead.Find (map xml_to_cterm finds),
432 In_Chead.Relate (map xml_to_cterm relates)]) : In_Chead.imodel
433 | xml_to_imodel x = raise ERROR ("xml_to_imodel: WRONG arg = " ^ xmlstr 0 x)
435 (XML.Elem (( "ICALCHEAD", []), [
436 pos as XML.Elem (( "POSITION", []), _),
437 XML.Elem (( "HEAD", []), [form]),
438 imodel as XML.Elem (("MATHML", []), _), (* TODO WN150813 ?!?*)
439 XML.Elem (( "POS", []), [XML.Text belongsto]),
440 spec as XML.Elem (( "SPECIFICATION", []), _)])) =
441 (xml_to_pos pos, xml_to_term_NEW form |> UnparseC.term, xml_to_imodel imodel,
442 Pos.str2pos_ belongsto, xml_to_spec spec) : In_Chead.icalhd
443 | xml_to_icalhd x = raise ERROR ("xml_to_icalhd: WRONG arg = " ^ xmlstr 0 x)
445 fun xml_of_sub (id, value) =
446 XML.Elem (("PAIR", []), [
447 XML.Elem (("VARIABLE", []), [xml_of_term id]),
448 XML.Elem (("VALUE", []), [xml_of_term value])])
450 (XML.Elem (("PAIR", []), [
451 XML.Elem (("VARIABLE", []), [id]),
452 XML.Elem (("VALUE", []), [value])])) = (xml_to_term id, xml_to_term value)
453 | xml_to_sub x = raise ERROR ("xml_to_sub wrong arg: " ^ xmlstr 0 x)
454 fun xml_of_subs (subs : Subst.input) =
455 XML.Elem (("SUBSTITUTION", []), map xml_of_sub (Subst.T_from_input (ThyC.get_theory "Isac_Knowledge") subs))
457 (XML.Elem (("SUBSTITUTION", []),
458 subs)) = Subst.T_to_input (map xml_to_sub subs)
459 | xml_to_subs x = raise ERROR ("xml_to_subs wrong arg: " ^ xmlstr 0 x)
460 fun xml_of_sube sube =
461 XML.Elem (("SUBSTITUTION", []), map xml_of_sub (Subst.T_from_string_eqs (ThyC.get_theory "Isac_Knowledge") sube))
463 (XML.Elem (("SUBSTITUTION", []),
464 xml_var_val_pairs)) = Subst.T_to_string_eqs (map xml_to_sub xml_var_val_pairs)
465 | xml_to_sube x = raise ERROR ("xml_to_sube wrong arg: " ^ xmlstr 0 x)
467 fun thm''2xml j (thm : thm) =
468 indt j ^ "<THEOREM>\n" ^
469 indt (j+i) ^ "<ID> " ^ ThmC.id_of_thm thm ^ " </ID>\n"^
470 term2xml j (Thm.prop_of thm) ^ "\n" ^
471 indt j ^ "</THEOREM>\n";
472 fun xml_of_thm' (ID, form) =
473 XML.Elem (("THEOREM", []), [
474 XML.Elem (("ID", []), [XML.Text ID]),
475 XML.Elem (("FORMULA", []), [
476 XML.Text form])]) (* repair for MathML: use term instead String *)
477 (* at the front-end theorems can be shown by their term, so term is transported isac-java <--- ME *)
478 fun xml_of_thm'' (ID, thm) =
479 (*---xml_of_thm''------------------------------------------thm'_to_thm''--------------
480 XML.Elem (("THEOREM", []), [
481 XML.Elem (("ID", []), [XML.Text ID]),
482 xml_of_term_NEW term])
483 -----xml_of_thm''------------------------------------------thm'_to_thm''------------*)
484 XML.Elem (("THEOREM", []), [
485 XML.Elem (("ID", []), [XML.Text ID]),
486 XML.Elem (("FORMULA", []), [
487 XML.Text ((UnparseC.term o Thm.prop_of) thm)])]) (* repair for MathML: use term instead String *)
490 (XML.Elem (("THEOREM", []), [
491 XML.Elem (("ID", []), [XML.Text ID]),
492 XML.Elem (("FORMULA", []), [XML.Text "NO_ad_hoc_thm_FROM_FRONTEND = True"])])) =
493 (ID, "NO_ad_hoc_thm_FROM_GUI = True")
494 | xml_to_thm' x = raise ERROR ("xml_of_thm' wrong arg:\n" ^ xmlstr 0 x)
495 (* at the front-end theorems are identified only by their name, so NO isac-java \<longrightarrow> ME *)
497 (*---xml_of_thm''------------------------------------------thm'_to_thm''--------------
498 (XML.Elem (("THEOREM", []), [
499 XML.Elem (("ID", []), [XML.Text ID]),
501 (ID, xml_to_term_NEW xterm) : thm''
502 | xml_to_thm'' x = raise ERROR ("xml_to_thm'' wrong arg:\n" ^ xmlstr 0 x)
503 -----xml_of_thm''------------------------------------------thm'_to_thm''------------*)
504 (XML.Elem (("THEOREM", []), [
505 XML.Elem (("ID", []), [XML.Text ID]),
506 XML.Elem (("FORMULA", []), [
507 XML.Text term])])) = (ID, ThmC.thm_from_thy (ThyC.Isac ()) ID)
508 | xml_to_thm'' x = raise ERROR ("xml_of_thm' wrong arg:" ^ xmlstr 0 x)
510 fun xml_of_src Rule.Empty_Prog =
511 XML.Elem (("NOCODE", []), [XML.Text "empty"])
512 | xml_of_src (Rule.Prog term) =
513 XML.Elem (("CODE", []), [
514 if term = TermC.empty then xml_of_src Rule.Empty_Prog
515 else xml_of_term (TermC.inst_abs term)])
516 | xml_of_src (Rule.Rfuns _) =
517 XML.Elem (("NOCODE", []), [XML.Text "reverse rewrite functions"])
519 (*.convert a tactic into xml-format .*)
520 fun xml_of_tac (Tactic.Subproblem (dI, pI)) =
521 XML.Elem (("SUBPROBLEMTACTIC", [("name", "Subproblem")]), [
522 XML.Elem (("THEORY", []), [XML.Text dI]),
523 XML.Elem (("PROBLEM", []), [xml_of_strs pI])])
524 | xml_of_tac (Tactic.Substitute cterms) =
525 (*Substitute: sube -> tac; Subst.string_eqs_empty: cterm' list; UNCLEAR HOW TO INPUT ON FRONTEND*)
526 XML.Elem (("STRINGLISTTACTIC", [("name", "Substitute")]), [xml_of_sube cterms])
527 (*----- Rewrite* -----------------------------------------------------*)
528 | xml_of_tac (Tactic.Rewrite thm'') =
529 XML.Elem (("REWRITETACTIC", [("name", "Rewrite")]), [xml_of_thm'' thm''])
530 | xml_of_tac (Tactic.Rewrite_Inst (subs, thm'')) =
531 XML.Elem (("REWRITEINSTTACTIC", [("name", "Rewrite_Inst")]), (
533 xml_of_thm'' thm'' :: []))
534 | xml_of_tac (Tactic.Rewrite_Set rls') =
535 XML.Elem (("REWRITESETTACTIC", [("name", "Rewrite_Set")]), [XML.Text rls'])
536 | xml_of_tac (Tactic.Rewrite_Set_Inst (subs, rls')) =
537 XML.Elem (("REWRITESETINSTTACTIC", [("name", "Rewrite_Set_Inst")]), ([
539 XML.Elem (("RULESET", []), [XML.Text rls'])]))
540 (*----- FORMTACTIC ---------------------------------------------------*)
541 | xml_of_tac (Tactic.Add_Find ct) =
542 XML.Elem (("FORMTACTIC", [("name", "Add_Find")]), [xml_of_cterm ct])
543 | xml_of_tac (Tactic.Add_Given ct) =
544 XML.Elem (("FORMTACTIC", [("name", "Add_Given")]), [xml_of_cterm ct])
545 | xml_of_tac (Tactic.Add_Relation ct) =
546 XML.Elem (("FORMTACTIC", [("name", "Add_Relation")]), [xml_of_cterm ct])
547 | xml_of_tac (Tactic.Check_elementwise ct) =
548 XML.Elem (("FORMTACTIC", [("name", "Check_elementwise")]), [xml_of_cterm ct])
549 | xml_of_tac (Tactic.Take ct) =
550 XML.Elem (("FORMTACTIC", [("name", "Take")]), [xml_of_cterm ct])
551 (*----- SIMPLETACTIC -------------------------------------------------*)
552 | xml_of_tac (Tactic.Calculate opstr) =
553 XML.Elem (("SIMPLETACTIC", [("name", "Calculate")]), [XML.Text opstr])
554 | xml_of_tac (Tactic.Or_to_List) =
555 XML.Elem (("SIMPLETACTIC", [("name", "Or_to_List")]), [(*//////////*)])
556 | xml_of_tac (Tactic.Specify_Theory ct) =
557 XML.Elem (("SIMPLETACTIC", [("name", "Specify_Theory")]), [XML.Text ct])
558 (*----- STRINGLISTTACTIC ---------------------------------------------*)
559 | xml_of_tac (Tactic.Apply_Method mI) =
560 XML.Elem (("STRINGLISTTACTIC", [("name", "Apply_Method")]), [xml_of_strs mI])
561 | xml_of_tac (Tactic.Check_Postcond pI) =
562 XML.Elem (("STRINGLISTTACTIC", [("name", "Check_Postcond")]), [xml_of_strs pI])
563 | xml_of_tac Model_Problem =
564 XML.Elem (("STRINGLISTTACTIC", [("name", "Model_Problem")]), [])
565 | xml_of_tac (Tactic.Refine_Tacitly pI) =
566 XML.Elem (("STRINGLISTTACTIC", [("name", "Refine_Tacitly")]), [xml_of_strs pI])
567 | xml_of_tac (Tactic.Specify_Method ct) =
568 XML.Elem (("STRINGLISTTACTIC", [("name", "Specify_Method")]), [xml_of_strs ct])
569 | xml_of_tac (Tactic.Specify_Problem ct) =
570 XML.Elem (("STRINGLISTTACTIC", [("name", "Specify_Problem")]), [xml_of_strs ct])
571 | xml_of_tac tac = raise ERROR ("xml_of_tac: not impl. for " ^ Tactic.input_to_string tac);
574 (XML.Elem (("SUBPROBLEMTACTIC", [("name", "Subproblem")]), [
575 XML.Elem (("THEORY", []), [XML.Text dI]),
576 XML.Elem (("PROBLEM", []), [pI])])) = Tactic.Subproblem (dI, xml_to_strs pI)
578 (*Substitute: sube -> tac; Subst.string_eqs_empty: cterm' list; UNCLEAR HOW TO INPUT ON FRONTEND*)
579 (XML.Elem (("STRINGLISTTACTIC", [
580 ("name", "Substitute")]), [cterms])) = Tactic.Substitute (xml_to_sube cterms)
581 (*----- Rewrite* -----------------------------------------------------*)
583 (XML.Elem (("REWRITETACTIC", [
584 ("name", "Rewrite")]), [thm])) = Tactic.Rewrite (xml_to_thm'' thm)
586 (XML.Elem (("REWRITEINSTTACTIC", [
587 ("name", "Rewrite_Inst")]), [
588 subs, thm])) = Tactic.Rewrite_Inst (xml_to_subs subs, xml_to_thm'' thm)
590 (XML.Elem (("REWRITESETTACTIC", [
591 ("name", "Rewrite_Set")]), [XML.Text rls'])) = Tactic.Rewrite_Set (rls')
593 (XML.Elem (("REWRITESETINSTTACTIC", [
594 ("name", "Rewrite_Set_Inst")]), [
596 XML.Elem (("RULESET", []), [XML.Text rls'])])) = Tactic.Rewrite_Set_Inst (xml_to_subs subs, rls')
597 (*----- FORMTACTIC ---------------------------------------------------*)
599 (XML.Elem (("FORMTACTIC", [
600 ("name", "Add_Find")]), [ct])) = Tactic.Add_Find (xml_to_cterm ct)
602 (XML.Elem (("FORMTACTIC", [
603 ("name", "Add_Given")]), [ct])) = Tactic.Add_Given (xml_to_cterm ct)
605 (XML.Elem (("FORMTACTIC", [
606 ("name", "Add_Relation")]), [ct])) = Tactic.Add_Relation (xml_to_cterm ct)
608 (XML.Elem (("FORMTACTIC", [
609 ("name", "Take")]), [ct])) = Tactic.Take (xml_to_cterm ct)
611 (XML.Elem (("FORMTACTIC", [
612 ("name", "Check_elementwise")]), [ct])) = Tactic.Check_elementwise (xml_to_cterm ct)
613 (*----- SIMPLETACTIC -------------------------------------------------*)
615 (XML.Elem (("SIMPLETACTIC", [
616 ("name", "Calculate")]), [XML.Text opstr])) = Tactic.Calculate opstr
618 (XML.Elem (("SIMPLETACTIC", [("name", "Or_to_List")]), [])) = Tactic.Or_to_List
620 (XML.Elem (("SIMPLETACTIC", [
621 ("name", "Specify_Theory")]), [XML.Text ct])) = Tactic.Specify_Theory ct
622 (*----- STRINGLISTTACTIC ---------------------------------------------*)
624 (XML.Elem (("STRINGLISTTACTIC", [
625 ("name", "Apply_Method")]), [mI])) = Tactic.Apply_Method (xml_to_strs mI)
627 (XML.Elem (("STRINGLISTTACTIC", [
628 ("name", "Check_Postcond")]), [pI])) = Tactic.Check_Postcond (xml_to_strs pI)
630 (XML.Elem (("STRINGLISTTACTIC", [
631 ("name", "Model_Problem")]), [])) = Tactic.Model_Problem
633 (XML.Elem (("STRINGLISTTACTIC", [
634 ("name", "Refine_Tacitly")]), [pI])) = Tactic.Refine_Tacitly (xml_to_strs pI)
636 (XML.Elem (("STRINGLISTTACTIC", [
637 ("name", "Specify_Method")]), [ct])) = Tactic.Specify_Method (xml_to_strs ct)
639 (XML.Elem (("STRINGLISTTACTIC", [
640 ("name", "Specify_Problem")]), [ct])) = Tactic.Specify_Problem (xml_to_strs ct)
641 | xml_to_tac x = raise ERROR ("xml_to_tac: not impl. for " ^ xmlstr 0 x);
643 val e_pblterm = (Thm.term_of o the o (TermC.parse @{theory Prog_Tac}))
644 ("Problem (" ^ ThyC.id_empty ^ "," ^ strs2str' Problem.id_empty ^ ")");
646 (*WN051224 minimal adaption to exporting Formulae _only_ by getFormulaeFromTo*)
647 fun xml_of_posterm (p, t, _) =
648 let val input_request = Free ("________________________________________________", dummyT)
650 XML.Elem (("CALCFORMULA", []),
651 [xml_of_pos "POSITION" p,
652 if t = e_pblterm (*headline in pbl is e_ <- _root_pbl for CAS-command*)
653 then xml_of_term_NEW input_request
654 else xml_of_term_NEW t])
657 fun xml_of_asm_val (asm, vl) =
658 XML.Elem (("ASMEVALUATED", []),[
659 XML.Elem (("ASM", []), [xml_of_term asm]),
660 XML.Elem (("VALUE", []), [xml_of_term vl])])
662 (*.a reference to an element in the theory hierarchy;
663 compare 'fun keref2xml'.*)
664 (* val (j, thyID, typ, xstring) =
665 (i+i, snd (thy_containing_rls thy' prls'), "Rulesets", prls');
667 fun theref2xml j thyID typ xstring =
668 let val guh = Thy_Write.theID2guh ["IsacKnowledge", thyID, typ, xstring]
669 val typ' = (implode o (drop_last_n 1) o Symbol.explode) typ
670 in indt j ^ "<KESTOREREF>\n" ^
671 indt (j+i) ^ "<TAG> " ^ typ' ^ " </TAG>\n" ^
672 indt (j+i) ^ "<ID> " ^ xstring ^ " </ID>\n" ^
673 indt (j+i) ^ "<GUH> " ^ guh ^ " </GUH>\n" ^
674 indt j ^ "</KESTOREREF>\n"
676 fun xml_of_theref thyid typ xstring =
678 val guh = Thy_Write.theID2guh ["IsacKnowledge", thyid, typ, xstring]
679 val typ' = (implode o (drop_last_n 1) o Symbol.explode) typ
681 XML.Elem (("KESTOREREF", []),[
682 XML.Elem (("TAG", []), [XML.Text typ']),
683 XML.Elem (("ID", []), [XML.Text xstring]),
684 XML.Elem (("GUH", []), [XML.Text guh])])
687 fun xml_of_contthy Thy_Present.EContThy =
688 error "contthy2xml called with EContThy"
690 | xml_of_contthy (Thy_Present.ContThm {thyID, thm, applto, applat, reword,
691 asms,lhs, rhs, result, resasms, asmrls}) =
692 XML.Elem (("CONTEXTDATA", []), [
693 XML.Elem (("GUH", []), [XML.Text thm]),
694 XML.Elem (("APPLTO", []), [xml_of_term applto]),
695 XML.Elem (("APPLAT", []), [xml_of_term applat]),
696 XML.Elem (("ORDER", []), [ (* should be a theref2xml *)
697 XML.Elem (("ID", []), [XML.Text reword])]),
698 XML.Elem (("ASMSEVAL", []), map xml_of_asm_val asms),
699 XML.Elem (("LHS", []), [xml_of_term (fst lhs)]),
700 XML.Elem (("LHSINST", []), [xml_of_term (snd lhs)]),
701 XML.Elem (("RHS", []), [xml_of_term (fst rhs)]),
702 XML.Elem (("RHSINST", []), [xml_of_term (snd rhs)]),
703 XML.Elem (("RESULT", []), [xml_of_term result]),
704 XML.Elem (("ASSUMPTIONS", []), map xml_of_term resasms),
705 XML.Elem (("EVALRLS", []), [xml_of_theref thyID "Rulesets" asmrls])])
707 | xml_of_contthy (Thy_Present.ContThmInst {thyID, thm, bdvs, thminst, applto, applat,
708 reword, asms, lhs, rhs, result, resasms, asmrls}) =
709 XML.Elem (("CONTEXTDATA", []), [
710 XML.Elem (("GUH", []), [XML.Text thm]),
711 XML.Elem (("SUBSLIST", []), [ (* should be an environment = substitution *)
712 xml_of_cterm (Env.subst2str' bdvs)]),
713 XML.Elem (("INSTANTIATED", []), [xml_of_term thminst]),
714 XML.Elem (("APPLTO", []), [xml_of_term applto]),
715 XML.Elem (("APPLAT", []), [xml_of_term applat]),
716 XML.Elem (("ORDER", []), [ (* should be a theref2xml *)
717 XML.Elem (("ID", []), [XML.Text reword])]),
718 XML.Elem (("ASMSEVAL", []), map xml_of_asm_val asms),
719 XML.Elem (("LHS", []), [xml_of_term (fst lhs)]),
720 XML.Elem (("LHSINST", []), [xml_of_term (snd lhs)]),
721 XML.Elem (("RHS", []), [xml_of_term (fst rhs)]),
722 XML.Elem (("RHSINST", []), [xml_of_term (snd rhs)]),
723 XML.Elem (("RESULT", []), [xml_of_term result]),
724 XML.Elem (("ASSUMPTIONS", []), map xml_of_term resasms),
725 XML.Elem (("EVALRLS", []), [xml_of_theref thyID "Rulesets" asmrls])])
727 | xml_of_contthy (Thy_Present.ContRls {thyID = _, rls, applto, result, asms}) =
728 XML.Elem (("CONTEXTDATA", []), [
729 XML.Elem (("GUH", []), [XML.Text rls]),
730 XML.Elem (("APPLTO", []), [xml_of_term applto]),
731 XML.Elem (("RESULT", []), [xml_of_term result]),
732 XML.Elem (("ASSUMPTIONS", []), map xml_of_term asms)])
734 | xml_of_contthy (Thy_Present.ContRlsInst {thyID = _, rls, bdvs, applto, result, asms}) =
735 XML.Elem (("CONTEXTDATA", []), [
736 XML.Elem (("GUH", []), [XML.Text rls]),
737 XML.Elem (("SUBSLIST", []), [ (* should be an environment = substitution *)
738 xml_of_cterm (Env.subst2str' bdvs)]),
739 XML.Elem (("INSTANTIATED", []), [xml_of_cterm (Env.subst2str' bdvs)]),
740 XML.Elem (("APPLTO", []), [xml_of_term applto]),
741 XML.Elem (("RESULT", []), [xml_of_term result]),
742 XML.Elem (("ASSUMPTIONS", []), map xml_of_term asms)])
744 | xml_of_contthy (Thy_Present.ContNOrew {thyID = _, thm_rls, applto}) =
745 XML.Elem (("CONTEXTDATA", []), [
746 XML.Elem (("GUH", []), [XML.Text thm_rls]),
747 XML.Elem (("APPLTO", []), [xml_of_term applto])])
749 | xml_of_contthy (Thy_Present.ContNOrewInst{thyID = _, thm_rls, bdvs, thminst, applto}) =
750 XML.Elem (("CONTEXTDATA", []), [
751 XML.Elem (("GUH", []), [XML.Text thm_rls]),
752 XML.Elem (("SUBSLIST", []), [ (* should be an environment = substitution *)
753 xml_of_cterm (Env.subst2str' bdvs)]),
754 XML.Elem (("INSTANTIATED", []), [xml_of_term thminst]),
755 XML.Elem (("APPLTO", []), [xml_of_term applto])])
757 fun xml_of_matchpbl (model_ok, pI, hdl, pbl, pre) =
758 XML.Elem (("CONTEXTDATA", []), [
759 XML.Elem (("GUH", []), [XML.Text (Specify.pblID2guh pI)]),
760 XML.Elem (("STATUS", []), [
761 XML.Text ((if model_ok then "correct" else "incorrect"))]),
762 XML.Elem (("HEAD", []), [xml_of_term_NEW hdl]),
763 xml_of_model pbl pre])
765 fun xml_of_matchmet (model_ok, pI, scr, pbl, pre) =
766 XML.Elem (("CONTEXTDATA", []), [
767 XML.Elem (("GUH", []), [XML.Text (Specify.metID2guh pI)]),
768 XML.Elem (("STATUS", []), [
769 XML.Text ((if model_ok then "correct" else "incorrect"))]),
770 XML.Elem (("PROGRAM", []), [xml_of_src scr]),
771 xml_of_model pbl pre])
773 fun xml_of_calcchanged calcid tag old del new =
774 (*TODO: make analogous to xml_to_calcchanged*)
775 XML.Elem ((tag, []),[
776 XML.Elem (("CALCID", []), [XML.Text (string_of_int calcid)]),
777 XML.Elem (("CALCCHANGED", []), [
778 xml_of_pos "UNCHANGED" old,
779 xml_of_pos "DELETED" del,
780 xml_of_pos "GENERATED" new])])
781 fun xml_to_calcchanged (XML.Elem (("CALCCHANGED", []), [old, del, new])) =
782 (xml_to_pos old, xml_to_pos del, xml_to_pos new)
783 | xml_to_calcchanged x = raise ERROR ("xml_to_calcchanged: WRONG arg = " ^ xmlstr 0 x)
785 (* for checking output at Frontend *)
786 fun cut_xml xml i = xml |> xmlstr 0 |> Symbol.explode |> curry take i |> implode
787 (*------------------------------------------------------------------
790 ------------------------------------------------------------------*)