helm/ocaml/cic_transformations/content2pres.ml

   1 (* Copyright (C) 2000, HELM Team.
   2  *
   3  * This file is part of HELM, an Hypertextual, Electronic
   4  * Library of Mathematics, developed at the Computer Science
   5  * Department, University of Bologna, Italy.
   6  *
   7  * HELM is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * as published by the Free Software Foundation; either version 2
  10  * of the License, or (at your option) any later version.
  11  *
  12  * HELM is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with HELM; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  20  * MA  02111-1307, USA.
  21  *
  22  * For details, see the HELM World-Wide-Web page,
  23  * http://cs.unibo.it/helm/.
  24  *)
  25
  26 (***************************************************************************)
  27 (*                                                                         *)
  28 (*                            PROJECT HELM                                 *)
  29 (*                                                                         *)
  30 (*                Andrea Asperti <asperti@cs.unibo.it>                     *)
  31 (*                              17/06/2003                                 *)
  32 (*                                                                         *)
  33 (***************************************************************************)
  34
  35 let rec split n l =
  36   if n = 0 then [],l
  37   else let l1,l2 =
  38     split (n-1) (List.tl l) in
  39     (List.hd l)::l1,l2
  40 ;;
  41
  42
  43 let is_big_general countterm p =
  44   let maxsize = Cexpr2pres.maxsize in
  45   let module Con = Content in
  46   let rec countp current_size p =
  47     if current_size > maxsize then current_size
  48     else
  49       let c1 = (countcontext current_size p.Con.proof_context) in
  50       if c1 > maxsize then c1
  51     else
  52       let c2 = (countapplycontext c1 p.Con.proof_apply_context) in
  53       if c2 > maxsize then c2
  54     else
  55       countconclude c2 p.Con.proof_conclude
  56
  57   and
  58     countcontext current_size c =
  59       List.fold_left countcontextitem current_size c
  60   and
  61     countcontextitem current_size e =
  62       if current_size > maxsize then maxsize
  63       else
  64         (match e with
  65           `Declaration d ->
  66             (match d.Con.dec_name with
  67                Some s -> current_size + 4 + (String.length s)
  68              | None -> prerr_endline "NO NAME!!"; assert false)
  69         | `Hypothesis h ->
  70             (match h.Con.dec_name with
  71                 Some s -> current_size + 4 + (String.length s)
  72               | None -> prerr_endline "NO NAME!!"; assert false)
  73         | `Proof p -> countp current_size p
  74         | `Definition d ->
  75             (match d.Con.def_name with
  76                 Some s ->
  77                   let c1 = (current_size + 4 + (String.length s)) in
  78                   (countterm c1 d.Con.def_term)
  79               | None ->
  80                   prerr_endline "NO NAME!!"; assert false)
  81         | `Joint ho -> maxsize + 1) (* we assume is big *)
  82   and
  83     countapplycontext current_size ac =
  84       List.fold_left countp current_size ac
  85   and
  86     countconclude current_size co =
  87       if current_size > maxsize then current_size
  88       else
  89         let c1 = countargs current_size co.Con.conclude_args in
  90         if c1 > maxsize then c1
  91       else
  92         (match co.Con.conclude_conclusion with
  93            Some concl ->  countterm c1 concl
  94         | None -> c1)
  95   and
  96     countargs current_size args =
  97       List.fold_left countarg current_size args
  98   and
  99     countarg current_size arg =
 100       if current_size > maxsize then current_size
 101       else
 102         (match arg with
 103            Con.Aux _ -> current_size
 104          | Con.Premise prem ->
 105              (match prem.Con.premise_binder with
 106                 Some s -> current_size + (String.length s)
 107               | None -> current_size + 7)
 108          | Con.Lemma lemma ->
 109              current_size + (String.length lemma.Con.lemma_name)
 110          | Con.Term t -> countterm current_size t
 111          | Con.ArgProof p -> countp current_size p
 112          | Con.ArgMethod s -> (maxsize + 1)) in
 113   let size = (countp 0 p) in
 114   (size > maxsize)
 115 ;;
 116
 117 let is_big = is_big_general (Cexpr2pres.countterm)
 118 ;;
 119
 120 let get_xref =
 121     let module Con = Content in
 122       function
 123         `Declaration d
 124       | `Hypothesis d -> d.Con.dec_id
 125       | `Proof p -> p.Con.proof_id
 126       | `Definition d -> d.Con.def_id
 127       | `Joint jo -> jo.Con.joint_id
 128 ;;
 129
 130 let make_row ?(attrs=[]) items concl =
 131   let module P = Mpresentation in
 132     (match concl with
 133        P.Mtable _ -> (* big! *)
 134          P.Mtable (attrs@[None,"align","baseline 1"; None,"equalrows","false";
 135           None,"columnalign","left"],
 136            [P.Mtr([],[P.Mtd ([],P.Mrow([],items))]);
 137             P.Mtr ([],[P.Mtd ([],P.indented concl)])])
 138      | _ ->  (* small *)
 139        P.Mrow(attrs,items@[P.Mspace([None,"width","0.1cm"]);concl]))
 140 ;;
 141
 142 let make_concl ?(attrs=[]) verb concl =
 143   let module P = Mpresentation in
 144     (match concl with
 145        P.Mtable _ -> (* big! *)
 146          P.Mtable (attrs@[None,"align","baseline 1"; None,"equalrows","false";
 147           None,"columnalign","left"],
 148            [P.Mtr([],[P.Mtd ([],P.Mtext([None,"mathcolor","Red"],verb))]);
 149             P.Mtr ([],[P.Mtd ([],P.indented concl)])])
 150      | _ ->  (* small *)
 151        P.Mrow(attrs,
 152         [P.Mtext([None,"mathcolor","Red"],verb);
 153          P.Mspace([None,"width","0.1cm"]);
 154          concl]))
 155 ;;
 156
 157 let make_args_for_apply term2pres args =
 158  let module Con = Content in
 159  let module P = Mpresentation in
 160  let make_arg_for_apply is_first arg row =
 161   let res =
 162    match arg with
 163       Con.Aux n -> assert false
 164     | Con.Premise prem ->
 165         let name =
 166           (match prem.Con.premise_binder with
 167              None -> "previous"
 168            | Some s -> s) in
 169         P.Mi([],name)::row
 170     | Con.Lemma lemma ->
 171          P.Mi([],lemma.Con.lemma_name)::row
 172     | Con.Term t ->
 173         if is_first then
 174           (term2pres t)::row
 175         else P.Mi([],"_")::row
 176     | Con.ArgProof _
 177     | Con.ArgMethod _ ->
 178        P.Mi([],"_")::row
 179   in
 180    if is_first then res else P.smallskip::res
 181  in
 182   match args with
 183     hd::tl ->
 184       make_arg_for_apply true hd
 185         (List.fold_right (make_arg_for_apply false) tl [])
 186   | _ -> assert false
 187 ;;
 188
 189 let rec justification term2pres p =
 190   let module Con = Content in
 191   let module P = Mpresentation in
 192   if ((p.Con.proof_conclude.Con.conclude_method = "Exact") or
 193      ((p.Con.proof_context = []) &
 194       (p.Con.proof_apply_context = []) &
 195       (p.Con.proof_conclude.Con.conclude_method = "Apply"))) then
 196     let pres_args =
 197       make_args_for_apply term2pres p.Con.proof_conclude.Con.conclude_args in
 198     P.Mrow([],
 199       P.Mtext([None,"mathcolor","Red"],"by")::P.Mspace([None,"width","0.1cm"])::
 200       P.Mo([],"(")::pres_args@[P.Mo([],")")])
 201   else proof2pres term2pres p
 202
 203 and proof2pres term2pres p =
 204   let rec proof2pres p =
 205     let module Con = Content in
 206     let module P = Mpresentation in
 207       let indent =
 208         let is_decl e =
 209           (match e with
 210              `Declaration _
 211            | `Hypothesis _ -> true
 212            | _ -> false) in
 213         ((List.filter is_decl p.Con.proof_context) != []) in
 214       let omit_conclusion = (not indent) && (p.Con.proof_context != []) in
 215       let concl =
 216         (match p.Con.proof_conclude.Con.conclude_conclusion with
 217            None -> None
 218          | Some t -> Some (term2pres t)) in
 219       let body =
 220           let presconclude =
 221             conclude2pres p.Con.proof_conclude indent omit_conclusion in
 222           let presacontext =
 223             acontext2pres p.Con.proof_apply_context presconclude indent in
 224           context2pres p.Con.proof_context presacontext in
 225       match p.Con.proof_name with
 226         None -> body
 227       | Some name ->
 228           let action =
 229            match concl with
 230               None -> body
 231 (*
 232                P.Maction
 233                  ([None,"actiontype","toggle" ; None,"selection","1"],
 234                   [P.Mtext [] "proof" ; body])
 235 *)
 236             | Some ac ->
 237                P.Maction
 238                  ([None,"actiontype","toggle" ; None,"selection","1"],
 239                   [(make_concl ~attrs:[Some "helm", "xref", p.Con.proof_id]
 240                      "proof of" ac); body])
 241           in
 242           P.Mtable ([None,"align","baseline 1"; None,"equalrows","false";
 243               None,"columnalign","left"],
 244             [P.Mtr ([],[P.Mtd ([],P.Mfenced([],[P.Mtext ([],name)]))]);
 245              P.Mtr ([],[P.Mtd ([], P.indented action)])])
 246 (*
 247           P.Mtable ([None,"align","baseline 1"; None,"equalrows","false";
 248               None,"columnalign","left";Some "helm", "xref", p.Con.proof_id],
 249             [P.Mtr ([],[P.Mtd ([],P.Mfenced([],[P.Mtext ([],name)]))]);
 250              P.Mtr ([],[P.Mtd ([], P.indented action)])]) *)
 251
 252   and context2pres c continuation =
 253     (* we generate a subtable for each context element, for selection
 254        purposes
 255        The table generated by the head-element does not have an xref;
 256        the whole context-proof is already selectable *)
 257     let module P = Mpresentation in
 258     match c with
 259       [] -> continuation
 260     | hd::tl ->
 261         let continuation' =
 262           List.fold_right
 263             (fun ce continuation ->
 264               let xref = get_xref ce in
 265               P.Mtable([None,"align","baseline 1"; None,"equalrows","false";
 266                None,"columnalign","left"; Some "helm", "xref", xref ],
 267                 [P.Mtr([Some "helm", "xref", "ce_"^xref],[P.Mtd ([],ce2pres ce)]);
 268                  P.Mtr([],[P.Mtd ([], continuation)])])) tl continuation in
 269          let hd_xref= get_xref hd in
 270          P.Mtable([None,"align","baseline 1"; None,"equalrows","false";
 271            None,"columnalign","left"],
 272              [P.Mtr([Some "helm", "xref", "ce_"^hd_xref],
 273                [P.Mtd ([],ce2pres hd)]);
 274              P.Mtr([],[P.Mtd ([], continuation')])])
 275
 276   and ce2pres =
 277     let module P = Mpresentation in
 278     let module Con = Content in
 279       function
 280         `Declaration d ->
 281           (match d.Con.dec_name with
 282               Some s ->
 283                 let ty = term2pres d.Con.dec_type in
 284                 P.Mrow ([],
 285                   [P.Mtext([None,"mathcolor","Red"],"Assume");
 286                    P.Mspace([None,"width","0.1cm"]);
 287                    P.Mi([],s);
 288                    P.Mtext([],":");
 289                    ty])
 290             | None ->
 291                 prerr_endline "NO NAME!!"; assert false)
 292       | `Hypothesis h ->
 293           (match h.Con.dec_name with
 294               Some s ->
 295                 let ty = term2pres h.Con.dec_type in
 296                 P.Mrow ([],
 297                   [P.Mtext([None,"mathcolor","Red"],"Suppose");
 298                    P.Mspace([None,"width","0.1cm"]);
 299                    P.Mo([],"(");
 300                    P.Mi ([],s);
 301                    P.Mo([],")");
 302                    P.Mspace([None,"width","0.1cm"]);
 303                    ty])
 304             | None ->
 305                 prerr_endline "NO NAME!!"; assert false)
 306       | `Proof p ->
 307            (match  p.Con.proof_name with
 308               Some "w" -> prerr_endline ("processing w");
 309             | _ -> ());
 310            proof2pres p
 311       | `Definition d ->
 312            (match d.Con.def_name with
 313               Some s ->
 314                 let term = term2pres d.Con.def_term in
 315                 P.Mrow ([],
 316                   [P.Mtext([],"Let ");
 317                    P.Mi([],s);
 318                    P.Mtext([]," = ");
 319                    term])
 320             | None ->
 321                 prerr_endline "NO NAME!!"; assert false)
 322       | `Joint ho ->
 323             P.Mtext ([],"jointdef")
 324
 325   and acontext2pres ac continuation indent =
 326     let module Con = Content in
 327     let module P = Mpresentation in
 328     List.fold_right
 329       (fun p continuation ->
 330          let hd =
 331            if indent then
 332              P.indented (proof2pres p)
 333            else
 334              proof2pres p in
 335          P.Mtable([None,"align","baseline 1"; None,"equalrows","false";
 336           None,"columnalign","left"; Some "helm","xref",p.Con.proof_id],
 337            [P.Mtr([Some "helm","xref","ace_"^p.Con.proof_id],[P.Mtd ([],hd)]);
 338             P.Mtr([],[P.Mtd ([], continuation)])])) ac continuation
 339
 340   and conclude2pres conclude indent omit_conclusion =
 341     let module Con = Content in
 342     let module P = Mpresentation in
 343     let tconclude_body =
 344       match conclude.Con.conclude_conclusion with
 345         Some t when not omit_conclusion ->
 346           let concl = (term2pres t) in
 347           if conclude.Con.conclude_method = "BU_Conversion" then
 348             make_concl "that is equivalent to" concl
 349           else if conclude.Con.conclude_method = "FalseInd" then
 350            (* false ind is in charge to add the conclusion *)
 351            falseind conclude
 352           else
 353             let conclude_body = conclude_aux conclude in
 354             let ann_concl =
 355               if conclude.Con.conclude_method = "TD_Conversion" then
 356                  make_concl "that is equivalent to" concl
 357               else make_concl "we conclude" concl in
 358             P.Mtable ([None,"align","baseline 1"; None,"equalrows","false";
 359               None,"columnalign","left"],
 360                 [P.Mtr ([],[P.Mtd ([],conclude_body)]);
 361                  P.Mtr ([],[P.Mtd ([],ann_concl)])])
 362       | _ -> conclude_aux conclude in
 363     if indent then
 364       P.indented (P.Mrow ([Some "helm", "xref", conclude.Con.conclude_id],
 365                     [tconclude_body]))
 366     else
 367       P.Mrow ([Some "helm", "xref", conclude.Con.conclude_id],[tconclude_body])
 368
 369
 370   and conclude_aux conclude =
 371     let module Con = Content in
 372     let module P = Mpresentation in
 373     if conclude.Con.conclude_method = "TD_Conversion" then
 374       let expected =
 375         (match conclude.Con.conclude_conclusion with
 376            None -> P.Mtext([],"NO EXPECTED!!!")
 377          | Some c -> term2pres c) in
 378       let subproof =
 379         (match conclude.Con.conclude_args with
 380           [Con.ArgProof p] -> p
 381          | _ -> assert false) in
 382       let synth =
 383         (match subproof.Con.proof_conclude.Con.conclude_conclusion with
 384            None -> P.Mtext([],"NO SYNTH!!!")
 385          | Some c -> (term2pres c)) in
 386       P.Mtable
 387         ([None,"align","baseline 1"; None,"equalrows","false"; None,"columnalign","left"],
 388         [P.Mtr([],[P.Mtd([],make_concl "we must prove" expected)]);
 389          P.Mtr([],[P.Mtd([],make_concl "or equivalently" synth)]);
 390          P.Mtr([],[P.Mtd([],proof2pres subproof)])])
 391     else if conclude.Con.conclude_method = "BU_Conversion" then
 392       assert false
 393     else if conclude.Con.conclude_method = "Exact" then
 394       let arg =
 395         (match conclude.Con.conclude_args with
 396            [Con.Term t] -> term2pres t
 397          | _ -> assert false) in
 398       (match conclude.Con.conclude_conclusion with
 399          None ->
 400           P.Mrow []
 401            [P.Mtext [None, "mathcolor", "red"] "Consider" ; P.smallskip; arg]
 402        | Some c -> let conclusion = term2pres c in
 403           make_row
 404             [arg; P.Mspace([None,"width","0.1cm"]);P.Mtext([],"proves")]
 405             conclusion
 406        )
 407     else if conclude.Con.conclude_method = "Intros+LetTac" then
 408       (match conclude.Con.conclude_args with
 409          [Con.ArgProof p] -> proof2pres p
 410        | _ -> assert false)
 411 (* OLD CODE
 412       let conclusion =
 413       (match conclude.Con.conclude_conclusion with
 414          None -> P.Mtext([],"NO Conclusion!!!")
 415        | Some c -> term2pres c) in
 416       (match conclude.Con.conclude_args with
 417          [Con.ArgProof p] ->
 418            P.Mtable
 419             ([None,"align","baseline 1"; None,"equalrows","false";
 420               None,"columnalign","left"],
 421               [P.Mtr([],[P.Mtd([],proof2pres p)]);
 422                P.Mtr([],[P.Mtd([],
 423                 (make_concl "we proved 1" conclusion))])]);
 424        | _ -> assert false)
 425 *)
 426     else if (conclude.Con.conclude_method = "ByInduction") then
 427       byinduction conclude
 428     else if (conclude.Con.conclude_method = "Exists") then
 429       exists conclude
 430     else if (conclude.Con.conclude_method = "AndInd") then
 431       andind conclude
 432     else if (conclude.Con.conclude_method = "FalseInd") then
 433       falseind conclude
 434     else if (conclude.Con.conclude_method = "Rewrite") then
 435       let justif =
 436         (match (List.nth conclude.Con.conclude_args 6) with
 437            Con.ArgProof p -> justification term2pres p
 438          | _ -> assert false) in
 439       let term1 =
 440         (match List.nth conclude.Con.conclude_args 2 with
 441            Con.Term t -> term2pres t
 442          | _ -> assert false) in
 443       let term2 =
 444         (match List.nth conclude.Con.conclude_args 5 with
 445            Con.Term t -> term2pres t
 446          | _ -> assert false) in
 447       P.Mtable ([None,"align","baseline 1";None,"equalrows","false";
 448         None,"columnalign","left"],
 449          [P.Mtr ([],[P.Mtd ([],P.Mrow([],[
 450           P.Mtext([None,"mathcolor","Red"],"rewrite");
 451           P.Mspace([None,"width","0.1cm"]);term1;
 452           P.Mspace([None,"width","0.1cm"]);
 453           P.Mtext([None,"mathcolor","Red"],"with");
 454           P.Mspace([None,"width","0.1cm"]);term2]))]);
 455           P.Mtr ([],[P.Mtd ([],P.indented justif)])]);
 456     else if conclude.Con.conclude_method = "Apply" then
 457       let pres_args =
 458         make_args_for_apply term2pres conclude.Con.conclude_args in
 459       P.Mrow([],
 460         P.Mtext([None,"mathcolor","Red"],"by")::
 461         P.Mspace([None,"width","0.1cm"])::
 462         P.Mo([],"(")::pres_args@[P.Mo([],")")])
 463     else
 464       P.Mtable
 465         ([None,"align","baseline 1"; None,"equalrows","false"; None,"columnalign","left"],
 466          [P.Mtr ([],[P.Mtd ([],P.Mtext([],"Apply method" ^ conclude.Con.conclude_method ^ " to"))]);
 467           P.Mtr ([],
 468            [P.Mtd ([],
 469              (P.indented
 470                (P.Mtable
 471                  ([None,"align","baseline 1"; None,"equalrows","false";
 472                    None,"columnalign","left"],
 473                   args2pres conclude.Con.conclude_args))))])])
 474
 475   and args2pres l =
 476     let module P = Mpresentation in
 477     List.map
 478      (function a -> P.Mtr ([], [P.Mtd ([], arg2pres a)])) l
 479
 480   and arg2pres =
 481     let module P = Mpresentation in
 482     let module Con = Content in
 483     function
 484         Con.Aux n ->
 485           P.Mtext ([],"aux " ^ n)
 486       | Con.Premise prem ->
 487           P.Mtext ([],"premise")
 488       | Con.Lemma lemma ->
 489           P.Mtext ([],"lemma")
 490       | Con.Term t ->
 491           term2pres t
 492       | Con.ArgProof p ->
 493         proof2pres p
 494       | Con.ArgMethod s ->
 495          P.Mtext ([],"method")
 496
 497    and byinduction conclude =
 498      let module P = Mpresentation in
 499      let module Con = Content in
 500      let proof_conclusion =
 501        (match conclude.Con.conclude_conclusion with
 502           None -> P.Mtext([],"No conclusion???")
 503         | Some t -> term2pres t) in
 504      let inductive_arg,args_for_cases =
 505        (match conclude.Con.conclude_args with
 506            Con.Aux(n)::_::tl ->
 507              let l1,l2 = split (int_of_string n) tl in
 508              let last_pos = (List.length l2)-1 in
 509              List.nth l2 last_pos,l1
 510          | _ -> assert false) in
 511      let induction_on =
 512        let arg =
 513          (match inductive_arg with
 514             Con.Aux n ->
 515               P.Mtext ([],"an aux???")
 516            | Con.Premise prem ->
 517               (match prem.Con.premise_binder with
 518                  None -> P.Mtext ([],"the previous result")
 519                | Some n -> P.Mi([],n))
 520            | Con.Lemma lemma -> P.Mi([],lemma.Con.lemma_name)
 521            | Con.Term t ->
 522                term2pres t
 523            | Con.ArgProof p ->
 524                P.Mtext ([],"a proof???")
 525            | Con.ArgMethod s ->
 526                P.Mtext ([],"a method???")) in
 527         (make_concl "we proceede by induction on" arg) in
 528      let to_prove =
 529         (make_concl "to prove" proof_conclusion) in
 530      P.Mtable
 531        ([None,"align","baseline 1"; None,"equalrows","false";
 532          None,"columnalign","left"],
 533           P.Mtr ([],[P.Mtd ([],induction_on)])::
 534           P.Mtr ([],[P.Mtd ([],to_prove)])::
 535           (make_cases args_for_cases))
 536
 537     and make_cases args_for_cases =
 538     let module P = Mpresentation in
 539     List.map
 540       (fun p -> P.Mtr ([],[P.Mtd ([],make_case p)])) args_for_cases
 541
 542     and make_case =
 543       let module P = Mpresentation in
 544       let module Con = Content in
 545       function
 546         Con.ArgProof p ->
 547           let name =
 548             (match p.Con.proof_name with
 549                None -> P.Mtext([],"no name for case!!")
 550              | Some n -> P.Mi([],n)) in
 551           let indhyps,args =
 552              List.partition
 553                (function
 554                    `Hypothesis h -> h.Con.dec_inductive
 555                  | _ -> false) p.Con.proof_context in
 556           let pattern_aux =
 557              List.fold_right
 558                (fun e p ->
 559                   let dec  =
 560                     (match e with
 561                        `Declaration h
 562                      | `Hypothesis h ->
 563                          let name =
 564                            (match h.Con.dec_name with
 565                               None -> "NO NAME???"
 566                            | Some n ->n) in
 567                          [P.Mspace([None,"width","0.1cm"]);
 568                           P.Mi ([],name);
 569                           P.Mtext([],":");
 570                           (term2pres h.Con.dec_type)]
 571                      | _ -> [P.Mtext ([],"???")]) in
 572                   dec@p) args [] in
 573           let pattern =
 574             P.Mtr ([],[P.Mtd ([],P.Mrow([],
 575                P.Mtext([],"Case")::P.Mspace([None,"width","0.1cm"])::name::pattern_aux@
 576                 [P.Mspace([None,"width","0.1cm"]);
 577                  P.Mtext([],"->")]))]) in
 578           let subconcl =
 579             (match p.Con.proof_conclude.Con.conclude_conclusion with
 580                None -> P.Mtext([],"No conclusion!!!")
 581              | Some t -> term2pres t) in
 582           let asubconcl =
 583              P.Mtr([],[P.Mtd([],
 584               P.indented (make_concl "the thesis becomes" subconcl))]) in
 585           let induction_hypothesis =
 586             (match indhyps with
 587               [] -> []
 588             | _ ->
 589                let text =
 590                  P.Mtr([],[P.Mtd([], P.indented
 591                  (P.Mtext([],"by induction hypothesis we know:")))]) in
 592                let make_hyp =
 593                  function
 594                    `Hypothesis h ->
 595                      let name =
 596                        (match h.Con.dec_name with
 597                           None -> "no name"
 598                         | Some s -> s) in
 599                      P.indented (P.Mrow ([],
 600                        [P.Mo([],"(");
 601                         P.Mi ([],name);
 602                         P.Mo([],")");
 603                         P.Mspace([None,"width","0.1cm"]);
 604                         term2pres h.Con.dec_type]))
 605                    | _ -> assert false in
 606                let hyps =
 607                  List.map
 608                    (function ce -> P.Mtr ([], [P.Mtd ([], make_hyp ce)]))
 609                     indhyps in
 610                text::hyps) in
 611           (* let acontext =
 612                acontext2pres_old p.Con.proof_apply_context true in *)
 613           let body = conclude2pres p.Con.proof_conclude true false in
 614           let presacontext =
 615            let acontext_id =
 616             match p.Con.proof_apply_context with
 617                [] -> p.Con.proof_conclude.Con.conclude_id
 618              | {Con.proof_id = id}::_ -> id
 619            in
 620             P.Maction([None,"actiontype","toggle" ; None,"selection","1"],
 621               [P.indented
 622                (P.Mtext
 623                  ([None,"mathcolor","Red" ;
 624                    Some "helm", "xref", acontext_id],"Proof")) ;
 625                acontext2pres p.Con.proof_apply_context body true]) in
 626           P.Mtable ([None,"align","baseline 1"; None,"equalrows","false";
 627              None,"columnalign","left"],
 628              pattern::asubconcl::induction_hypothesis@
 629               [P.Mtr([],[P.Mtd([],presacontext)])])
 630        | _ -> assert false
 631
 632      and falseind conclude =
 633        let module P = Mpresentation in
 634        let module Con = Content in
 635        let proof_conclusion =
 636          (match conclude.Con.conclude_conclusion with
 637             None -> P.Mtext([],"No conclusion???")
 638           | Some t -> term2pres t) in
 639        let case_arg =
 640          (match conclude.Con.conclude_args with
 641              [Con.Aux(n);_;case_arg] -> case_arg
 642            | _ -> assert false;
 643              (*
 644              List.map (ContentPp.parg 0) conclude.Con.conclude_args;
 645              assert false *)) in
 646        let arg =
 647          (match case_arg with
 648              Con.Aux n -> assert false
 649            | Con.Premise prem ->
 650               (match prem.Con.premise_binder with
 651                  None -> [P.Mtext([],"Contradiction, hence")]
 652                | Some n ->
 653                   [P.Mi([],n);P.smallskip;P.Mtext([],"is contradictory, hence")])
 654            | Con.Lemma lemma ->
 655                [P.Mi([],lemma.Con.lemma_name);P.smallskip;P.Mtext([],"is contradictory, hence")]
 656            | _ -> assert false) in
 657             (* let body = proof2pres {proof with Con.proof_context = tl} in *)
 658        make_row arg proof_conclusion
 659
 660      and andind conclude =
 661        let module P = Mpresentation in
 662        let module Con = Content in
 663        let proof_conclusion =
 664          (match conclude.Con.conclude_conclusion with
 665             None -> P.Mtext([],"No conclusion???")
 666           | Some t -> term2pres t) in
 667        let proof,case_arg =
 668          (match conclude.Con.conclude_args with
 669              [Con.Aux(n);_;Con.ArgProof proof;case_arg] -> proof,case_arg
 670            | _ -> assert false;
 671              (*
 672              List.map (ContentPp.parg 0) conclude.Con.conclude_args;
 673              assert false *)) in
 674        let arg =
 675          (match case_arg with
 676              Con.Aux n -> assert false
 677            | Con.Premise prem ->
 678               (match prem.Con.premise_binder with
 679                  None -> []
 680                | Some n -> [P.Mtext([],"by");P.smallskip;P.Mi([],n)])
 681            | Con.Lemma lemma ->
 682                [P.Mtext([],"by");P.smallskip;P.Mi([],lemma.Con.lemma_name)]
 683            | _ -> assert false) in
 684        match proof.Con.proof_context with
 685          `Hypothesis hyp1::`Hypothesis hyp2::tl ->
 686             let get_name hyp =
 687               (match hyp.Con.dec_name with
 688                 None -> "_"
 689               | Some s -> s) in
 690             let preshyp1 =
 691               P.Mrow ([],
 692                [P.Mtext([],"(");
 693                 P.Mi([],get_name hyp1);
 694                 P.Mtext([],")");
 695                 P.smallskip;
 696                 term2pres hyp1.Con.dec_type]) in
 697             let preshyp2 =
 698               P.Mrow ([],
 699                [P.Mtext([],"(");
 700                 P.Mi([],get_name hyp2);
 701                 P.Mtext([],")");
 702                 P.smallskip;
 703                 term2pres hyp2.Con.dec_type]) in
 704             (* let body = proof2pres {proof with Con.proof_context = tl} in *)
 705             let body = conclude2pres proof.Con.proof_conclude false true in
 706             let presacontext =
 707               acontext2pres proof.Con.proof_apply_context body false in
 708             P.Mtable
 709               ([None,"align","baseline 1"; None,"equalrows","false";
 710                 None,"columnalign","left"],
 711                [P.Mtr ([],[P.Mtd ([],
 712                  P.Mrow([],arg@[P.smallskip;P.Mtext([],"we have")]))]);
 713                 P.Mtr ([],[P.Mtd ([],preshyp1)]);
 714                 P.Mtr ([],[P.Mtd ([],P.Mtext([],"and"))]);
 715                 P.Mtr ([],[P.Mtd ([],preshyp2)]);
 716                 P.Mtr ([],[P.Mtd ([],presacontext)])]);
 717          | _ -> assert false
 718
 719      and exists conclude =
 720        let module P = Mpresentation in
 721        let module Con = Content in
 722        let proof_conclusion =
 723          (match conclude.Con.conclude_conclusion with
 724             None -> P.Mtext([],"No conclusion???")
 725           | Some t -> term2pres t) in
 726        let proof =
 727          (match conclude.Con.conclude_args with
 728              [Con.Aux(n);_;Con.ArgProof proof;_] -> proof
 729            | _ -> assert false;
 730              (*
 731              List.map (ContentPp.parg 0) conclude.Con.conclude_args;
 732              assert false *)) in
 733        match proof.Con.proof_context with
 734            `Declaration decl::`Hypothesis hyp::tl
 735          | `Hypothesis decl::`Hypothesis hyp::tl ->
 736            let get_name decl =
 737              (match decl.Con.dec_name with
 738                 None -> "_"
 739               | Some s -> s) in
 740            let presdecl =
 741              P.Mrow ([],
 742                [P.Mtext([None,"mathcolor","Red"],"let");
 743                 P.smallskip;
 744                 P.Mi([],get_name decl);
 745                 P.Mtext([],":"); term2pres decl.Con.dec_type]) in
 746            let suchthat =
 747              P.Mrow ([],
 748                [P.Mtext([None,"mathcolor","Red"],"such that");
 749                 P.smallskip;
 750                 P.Mtext([],"(");
 751                 P.Mi([],get_name hyp);
 752                 P.Mtext([],")");
 753                 P.smallskip;
 754                 term2pres hyp.Con.dec_type]) in
 755             (* let body = proof2pres {proof with Con.proof_context = tl} in *)
 756             let body = conclude2pres proof.Con.proof_conclude false true in
 757             let presacontext =
 758               acontext2pres proof.Con.proof_apply_context body false in
 759             P.Mtable
 760               ([None,"align","baseline 1"; None,"equalrows","false";
 761                 None,"columnalign","left"],
 762                [P.Mtr ([],[P.Mtd ([],presdecl)]);
 763                 P.Mtr ([],[P.Mtd ([],suchthat)]);
 764                 P.Mtr ([],[P.Mtd ([],presacontext)])]);
 765          | _ -> assert false in
 766
 767 proof2pres p
 768 ;;
 769
 770 exception ToDo;;
 771
 772 let content2pres term2pres (id,params,metasenv,obj) =
 773  let module K = Content in
 774  let module P = Mpresentation in
 775   match obj with
 776      `Def (K.Const,thesis,`Proof p) ->
 777        P.Mtable
 778         [None,"align","baseline 1";
 779          None,"equalrows","false";
 780          None,"columnalign","left";
 781          None,"helm:xref","id"]
 782         ([P.Mtr []
 783            [P.Mtd []
 784             (P.Mrow []
 785              [P.Mtext []
 786                ("UNFINISHED PROOF" ^ id ^"(" ^
 787                  String.concat " ; " (List.map UriManager.string_of_uri params)^
 788                 ")")])] ;
 789          P.Mtr []
 790           [P.Mtd []
 791             (P.Mrow []
 792               [P.Mtext [] "THESIS:"])] ;
 793          P.Mtr []
 794           [P.Mtd []
 795             (P.Mrow []
 796               [P.Mphantom []
 797                 (P.Mtext [] "__") ;
 798               term2pres thesis])]] @
 799          (match metasenv with
 800              None -> []
 801            | Some metasenv' ->
 802               [P.Mtr []
 803                 [P.Mtd []
 804                   (* Conjectures are in their own table to make *)
 805                   (* diffing the DOM trees easier.              *)
 806                   (P.Mtable
 807                     [None,"align","baseline 1";
 808                      None,"equalrows","false";
 809                      None,"columnalign","left"]
 810                    ((P.Mtr []
 811                       [P.Mtd []
 812                        (P.Mrow []
 813                          [P.Mtext [] "CONJECTURES:"])])::
 814                     List.map
 815                      (function
 816                        (id,n,context,ty) ->
 817                          P.Mtr []
 818                           [P.Mtd []
 819                            (P.Mrow [Some "helm", "xref", id]
 820                              (List.map
 821                                (function
 822                                    None ->
 823                                      P.Mrow []
 824                                       [ P.Mi [] "_" ;
 825                                         P.Mo [] ":?" ;
 826                                         P.Mi [] "_"]
 827                                  | Some (`Declaration d)
 828                                  | Some (`Hypothesis d) ->
 829                                     let
 830                                      { K.dec_name = dec_name ;
 831                                        K.dec_type = ty } = d
 832                                      in
 833                                       P.Mrow []
 834                                        [ P.Mi []
 835                                           (match dec_name with
 836                                               None -> "_"
 837                                             | Some n -> n) ;
 838                                          P.Mo [] ":" ;
 839                                          term2pres ty]
 840                                  | Some (`Definition d) ->
 841                                     let
 842                                      { K.def_name = def_name ;
 843                                        K.def_term = bo } = d
 844                                      in
 845                                       P.Mrow []
 846                                        [ P.Mi []
 847                                           (match def_name with
 848                                               None -> "_"
 849                                             | Some n -> n) ;
 850                                          P.Mo [] ":=" ;
 851                                          term2pres bo]
 852                                  | Some (`Proof p) ->
 853                                     let proof_name = p.K.proof_name in
 854                                      P.Mrow []
 855                                       [ P.Mi []
 856                                          (match proof_name with
 857                                              None -> "_"
 858                                            | Some n -> n) ;
 859                                         P.Mo [] ":=" ;
 860                                         proof2pres term2pres p]
 861                                ) (List.rev context) @
 862                              [ P.Mo [] "|-" ] @
 863                              [ P.Mi [] (string_of_int n) ;
 864                                P.Mo [] ":" ;
 865                                term2pres ty ]
 866                            ))
 867                           ]
 868                      ) metasenv'
 869                   ))]]
 870          )  @
 871         [P.Mtr []
 872           [P.Mtd []
 873             (P.Mrow []
 874               [proof2pres term2pres p])]])
 875    | _ -> raise ToDo
 876 ;;
 877
 878 let content2pres ~ids_to_inner_sorts =
 879  content2pres
 880   (function p ->
 881    (Cexpr2pres.cexpr2pres_charcount
 882     (Content_expressions.acic2cexpr ids_to_inner_sorts p)))
 883 ;;