src/Tools/isac/MathEngBasic/tactic.sml
changeset 59741 e2a808ba0467
parent 59740 5b8b3475d5a6
child 59749 cc3b1807f72e
     1.1 --- a/src/Tools/isac/MathEngBasic/tactic.sml	Tue Dec 17 17:19:34 2019 +0100
     1.2 +++ b/src/Tools/isac/MathEngBasic/tactic.sml	Tue Dec 17 17:52:48 2019 +0100
     1.3 @@ -9,10 +9,98 @@
     1.4  *)
     1.5  signature TACTIC =
     1.6  sig
     1.7 -  datatype T = datatype Tactic_Def.T
     1.8 +  datatype T =
     1.9 +    Add_Find' of Rule.cterm' * Model.itm list | Add_Given' of Rule.cterm' * Model.itm list 
    1.10 +  | Add_Relation' of Rule.cterm' * Model.itm list
    1.11 +  | Apply_Assumption' of term list * term
    1.12 +  | Apply_Method' of Celem.metID * term option * Istate_Def.T * Proof.context
    1.13 +
    1.14 +  | Begin_Sequ' | Begin_Trans' of term
    1.15 +  | Split_And' of term | Split_Or' of term | Split_Intersect' of term
    1.16 +  | Conclude_And' of term | Conclude_Or' of term | Collect_Trues' of term
    1.17 +  | End_Sequ' | End_Trans' of Selem.result
    1.18 +  | End_Ruleset' of term | End_Subproblem' of term | End_Intersect' of term | End_Proof''
    1.19 +
    1.20 +  | CAScmd' of term
    1.21 +  | Calculate' of Rule.theory' * string * term * (term * Celem.thm')
    1.22 +  | Check_Postcond' of Celem.pblID * Selem.result
    1.23 +  | Check_elementwise' of term * Rule.cterm' * Selem.result
    1.24 +  | Del_Find' of Rule.cterm' | Del_Given' of Rule.cterm' | Del_Relation' of Rule.cterm'
    1.25 +
    1.26 +  | Derive' of Rule.rls
    1.27 +  | Detail_Set' of Rule.theory' * bool * Rule.rls * term * Selem.result
    1.28 +  | Detail_Set_Inst' of Rule.theory' * bool * Rule.subst * Rule.rls * term * Selem.result
    1.29 +  | End_Detail' of Selem.result
    1.30 +
    1.31 +  | Empty_Tac_
    1.32 +  | Free_Solve'
    1.33 +
    1.34 +  | Init_Proof' of Rule.cterm' list * Celem.spec
    1.35 +  | Model_Problem' of Celem.pblID * Model.itm list * Model.itm list
    1.36 +  | Or_to_List' of term * term
    1.37 +  | Refine_Problem' of Celem.pblID * (Model.itm list * (bool * term) list)
    1.38 +  | Refine_Tacitly' of Celem.pblID * Celem.pblID * Rule.domID * Celem.metID * Model.itm list
    1.39 +
    1.40 +  | Rewrite' of Rule.theory' * Rule.rew_ord' * Rule.rls * bool * Celem.thm'' * term * Selem.result
    1.41 +  | Rewrite_Asm' of Rule.theory' * Rule.rew_ord' * Rule.rls * bool * Celem.thm'' * term * Selem.result
    1.42 +  | Rewrite_Inst' of Rule.theory' * Rule.rew_ord' * Rule.rls * bool * Rule.subst * Celem.thm'' * term * Selem.result
    1.43 +  | Rewrite_Set' of Rule.theory' * bool * Rule.rls * term * Selem.result
    1.44 +  | Rewrite_Set_Inst' of Rule.theory' * bool * Rule.subst * Rule.rls * term * Selem.result
    1.45 +
    1.46 +  | Specify_Method' of Celem.metID * Model.ori list * Model.itm list
    1.47 +  | Specify_Problem' of Celem.pblID * (bool * (Model.itm list * (bool * term) list))
    1.48 +  | Specify_Theory' of Rule.domID
    1.49 +  | Subproblem' of Celem.spec * Model.ori list * term * Selem.fmz_ * Proof.context * term
    1.50 +  | Substitute' of Rule.rew_ord_ * Rule.rls * Selem.subte * term * term
    1.51 +  | Tac_ of theory * string * string * string
    1.52 +  | Take' of term | Take_Inst' of term
    1.53    val string_of : T -> string
    1.54  
    1.55 -  datatype input = datatype Tactic_Def.input
    1.56 +  datatype input =
    1.57 +    Add_Find of Rule.cterm' | Add_Given of Rule.cterm' | Add_Relation of Rule.cterm'
    1.58 +  | Apply_Assumption of Rule.cterm' list
    1.59 +  | Apply_Method of Celem.metID
    1.60 +  (*/--- TODO: re-design ? -----------------------------------------------------------------\*)
    1.61 +  | Begin_Sequ | Begin_Trans
    1.62 +  | Split_And | Split_Or | Split_Intersect
    1.63 +  | Conclude_And | Conclude_Or | Collect_Trues
    1.64 +  | End_Sequ | End_Trans
    1.65 +  | End_Ruleset | End_Subproblem | End_Intersect | End_Proof'
    1.66 +  (*\--- TODO: re-design ? -----------------------------------------------------------------/*)
    1.67 +  | CAScmd of Rule.cterm'
    1.68 +  | Calculate of string
    1.69 +  | Check_Postcond of Celem.pblID
    1.70 +  | Check_elementwise of Rule.cterm'
    1.71 +  | Del_Find of Rule.cterm' | Del_Given of Rule.cterm' | Del_Relation of Rule.cterm'
    1.72 +
    1.73 +  | Derive of Rule.rls'
    1.74 +  | Detail_Set of Rule.rls'
    1.75 +  | Detail_Set_Inst of Selem.subs * Rule.rls'
    1.76 +  | End_Detail
    1.77 +
    1.78 +  | Empty_Tac
    1.79 +  | Free_Solve
    1.80 +
    1.81 +  | Init_Proof of Rule.cterm' list * Celem.spec
    1.82 +  | Model_Problem
    1.83 +  | Or_to_List
    1.84 +  | Refine_Problem of Celem.pblID
    1.85 +  | Refine_Tacitly of Celem.pblID
    1.86 +
    1.87 +  | Rewrite of Celem.thm''
    1.88 +  | Rewrite_Asm of Celem.thm''
    1.89 +  | Rewrite_Inst of Selem.subs * Celem.thm''
    1.90 +  | Rewrite_Set of Rule.rls'
    1.91 +  | Rewrite_Set_Inst of Selem.subs * Rule.rls'
    1.92 +
    1.93 +  | Specify_Method of Celem.metID
    1.94 +  | Specify_Problem of Celem.pblID
    1.95 +  | Specify_Theory of Rule.domID
    1.96 +  | Subproblem of Rule.domID * Celem.pblID
    1.97 +
    1.98 +  | Substitute of Selem.sube
    1.99 +  | Tac of string
   1.100 +  | Take of Rule.cterm' | Take_Inst of Rule.cterm'
   1.101    val tac2str : input -> string
   1.102  
   1.103    val eq_tac : input * input -> bool
   1.104 @@ -50,11 +138,112 @@
   1.105         initacs start with a formula different from the preceding formula.
   1.106     see 'type tac_' for the internal representation of tactics
   1.107  *)
   1.108 -datatype input = datatype Tactic_Def.input
   1.109 +datatype input =
   1.110 +    Add_Find of Rule.cterm' | Add_Given of Rule.cterm' | Add_Relation of Rule.cterm'
   1.111 +  | Apply_Assumption of Rule.cterm' list
   1.112 +  | Apply_Method of Celem.metID
   1.113 +    (* creates an "istate" in PblObj.env; in case of "init_form" 
   1.114 +      creates a formula at ((lev_on o lev_dn) p, Frm) and in this "ppobj.loc"
   1.115 +      a "SOME istate" at fst of "loc".
   1.116 +      As each step (in the solve-phase) has a resulting formula (at the front-end)
   1.117 +      Apply_Method also does the 1st step in the script (an "initac") if there is no "init_form" *)  
   1.118 +  (*/--- TODO: re-design ? -----------------------------------------------------------------\*)
   1.119 +  | Begin_Sequ | Begin_Trans
   1.120 +  | Split_And | Split_Or | Split_Intersect
   1.121 +  | Conclude_And | Conclude_Or | Collect_Trues
   1.122 +  | End_Sequ | End_Trans
   1.123 +  | End_Ruleset | End_Subproblem (* WN0509 drop *) | End_Intersect | End_Proof'
   1.124 +  (*\--- TODO: re-design ? -----------------------------------------------------------------/*)
   1.125 +  | CAScmd of Rule.cterm'
   1.126 +  | Calculate of string
   1.127 +  | Check_Postcond of Celem.pblID
   1.128 +  | Check_elementwise of Rule.cterm'
   1.129 +  | Del_Find of Rule.cterm' | Del_Given of Rule.cterm' | Del_Relation of Rule.cterm'
   1.130  
   1.131 -val tac2str = Tactic_Def.tac2str
   1.132 +  | Derive of Rule.rls'                 (* WN0509 drop *)
   1.133 +  | Detail_Set of Rule.rls'             (* WN0509 drop *)
   1.134 +  | Detail_Set_Inst of Selem.subs * Rule.rls' (* WN0509 drop *)
   1.135 +  | End_Detail                     (* WN0509 drop *)
   1.136  
   1.137 -val is_empty_tac = Tactic_Def.is_empty_tac
   1.138 +  | Empty_Tac
   1.139 +  | Free_Solve
   1.140 +
   1.141 +  | Init_Proof of Rule.cterm' list * Celem.spec
   1.142 +  | Model_Problem
   1.143 +  | Or_to_List
   1.144 +  | Refine_Problem of Celem.pblID
   1.145 +  | Refine_Tacitly of Celem.pblID
   1.146 +
   1.147 +   (* rewrite-tactics can transport a (thmID, thm) to and (!) from the java-front-end
   1.148 +     because there all the thms are present with both (thmID, thm)
   1.149 +     (where user-views can show both or only one of (thmID, thm)),
   1.150 +     and thm is created from ThmID by assoc_thm'' when entering isabisac *)
   1.151 +  | Rewrite of Celem.thm''
   1.152 +  | Rewrite_Asm of Celem.thm''
   1.153 +  | Rewrite_Inst of Selem.subs * Celem.thm''
   1.154 +  | Rewrite_Set of Rule.rls'
   1.155 +  | Rewrite_Set_Inst of Selem.subs * Rule.rls'
   1.156 +
   1.157 +  | Specify_Method of Celem.metID
   1.158 +  | Specify_Problem of Celem.pblID
   1.159 +  | Specify_Theory of Rule.domID
   1.160 +  | Subproblem of Rule.domID * Celem.pblID (* WN0509 drop *)
   1.161 +
   1.162 +  | Substitute of Selem.sube
   1.163 +  | Tac of string               (* WN0509 drop *)
   1.164 +  | Take of Rule.cterm' | Take_Inst of Rule.cterm'
   1.165 +
   1.166 +fun tac2str ma = case ma of
   1.167 +    Init_Proof (ppc, spec)  => 
   1.168 +      "Init_Proof "^(pair2str (strs2str ppc, Celem.spec2str spec))
   1.169 +  | Model_Problem           => "Model_Problem "
   1.170 +  | Refine_Tacitly pblID    => "Refine_Tacitly " ^ strs2str pblID 
   1.171 +  | Refine_Problem pblID    => "Refine_Problem " ^ strs2str pblID 
   1.172 +  | Add_Given cterm'        => "Add_Given " ^ cterm'
   1.173 +  | Del_Given cterm'        => "Del_Given " ^ cterm'
   1.174 +  | Add_Find cterm'         => "Add_Find " ^ cterm'
   1.175 +  | Del_Find cterm'         => "Del_Find " ^ cterm'
   1.176 +  | Add_Relation cterm'     => "Add_Relation " ^ cterm'
   1.177 +  | Del_Relation cterm'     => "Del_Relation " ^ cterm'
   1.178 +
   1.179 +  | Specify_Theory domID    => "Specify_Theory " ^ quote domID
   1.180 +  | Specify_Problem pblID   => "Specify_Problem " ^ strs2str pblID
   1.181 +  | Specify_Method metID    => "Specify_Method " ^ strs2str metID
   1.182 +  | Apply_Method metID      => "Apply_Method " ^ strs2str metID
   1.183 +  | Check_Postcond pblID    => "Check_Postcond " ^ strs2str pblID
   1.184 +  | Free_Solve              => "Free_Solve"
   1.185 +
   1.186 +  | Rewrite_Inst (subs, (id, thm)) =>
   1.187 +    "Rewrite_Inst " ^ (pair2str (subs2str subs, spair2str (id, thm |> Thm.prop_of |> Rule.term2str)))
   1.188 +  | Rewrite (id, thm) => "Rewrite " ^ spair2str (id, thm |> Thm.prop_of |> Rule.term2str)
   1.189 +  | Rewrite_Asm (id, thm) => "Rewrite_Asm " ^ spair2str (id, thm |> Thm.prop_of |> Rule.term2str)
   1.190 +  | Rewrite_Set_Inst (subs, rls) => 
   1.191 +    "Rewrite_Set_Inst " ^ pair2str (subs2str subs, quote rls)
   1.192 +  | Rewrite_Set rls         => "Rewrite_Set " ^ quote rls
   1.193 +  | Detail_Set rls          => "Detail_Set " ^ quote rls
   1.194 +  | Detail_Set_Inst (subs, rls) =>  "Detail_Set_Inst " ^ pair2str (subs2str subs, quote rls)
   1.195 +  | End_Detail              => "End_Detail"
   1.196 +  | Derive rls'             => "Derive " ^ rls' 
   1.197 +  | Calculate op_           => "Calculate " ^ op_ 
   1.198 +  | Substitute sube         => "Substitute " ^ Selem.sube2str sube	     
   1.199 +  | Apply_Assumption ct's   => "Apply_Assumption " ^ strs2str ct's
   1.200 +
   1.201 +  | Take cterm'             => "Take " ^ quote cterm'
   1.202 +  | Take_Inst cterm'        => "Take_Inst " ^ quote cterm'
   1.203 +  | Subproblem (domID, pblID) => "Subproblem " ^ pair2str (domID, strs2str pblID)
   1.204 +  | End_Subproblem          => "End_Subproblem"
   1.205 +  | CAScmd cterm'           => "CAScmd " ^ quote cterm'
   1.206 +
   1.207 +  | Check_elementwise cterm'=> "Check_elementwise " ^ quote cterm'
   1.208 +  | Or_to_List              => "Or_to_List "
   1.209 +  | Collect_Trues           => "Collect_Trues"
   1.210 +
   1.211 +  | Empty_Tac               => "Empty_Tac"
   1.212 +  | Tac string              => "Tac " ^ string
   1.213 +  | End_Proof'              => "input End_Proof'"
   1.214 +  | _                       => "tac2str not impl. for ?!";
   1.215 +
   1.216 +fun is_empty_tac input = case input of Empty_Tac => true | _ => false
   1.217  
   1.218  fun eq_tac (Rewrite (id1, _), Rewrite (id2, _)) = id1 = id2
   1.219    | eq_tac (Rewrite_Inst (_, (id1, _)), Rewrite_Inst (_, (id2, _))) = id1 = id2
   1.220 @@ -142,9 +331,126 @@
   1.221    and re-calculate result if t<>t'
   1.222    TODO.WN161219: replace *every* cterm' by term
   1.223  *)
   1.224 -  datatype T = datatype Tactic_Def.T
   1.225 +  datatype T =
   1.226 +    Add_Find' of Rule.cterm' * Model.itm list | Add_Given' of Rule.cterm' * Model.itm list 
   1.227 +  | Add_Relation' of Rule.cterm' * Model.itm list
   1.228 +  | Apply_Assumption' of term list * term
   1.229 +  | Apply_Method' of Celem.metID * term option * Istate_Def.T * Proof.context
   1.230 +  (*/--- TODO: re-design ? -----------------------------------------------------------------\*)
   1.231 +  | Begin_Sequ' | Begin_Trans' of term
   1.232 +  | Split_And' of term | Split_Or' of term | Split_Intersect' of term
   1.233 +  | Conclude_And' of term | Conclude_Or' of term | Collect_Trues' of term
   1.234 +  | End_Sequ' | End_Trans' of Selem.result
   1.235 +  | End_Ruleset' of term | End_Subproblem' of term | End_Intersect' of term | End_Proof''
   1.236 +  (*\--- TODO: re-design ? -----------------------------------------------------------------/*)
   1.237 +  | CAScmd' of term
   1.238 +  | Calculate' of Rule.theory' * string * term * (term * Celem.thm')
   1.239 +  | Check_Postcond' of Celem.pblID *
   1.240 +    Selem.result (* returnvalue of script in solve *)
   1.241 +  | Check_elementwise' of (*special case:*)
   1.242 +    term *       (* (1) the current formula: [x=1,x=...]     *)
   1.243 +    string *     (* (2) the pred from Check_elementwise      *)
   1.244 +    Selem.result (* (3) composed from (1) and (2): {x. pred} *)
   1.245 +  | Del_Find' of Rule.cterm' | Del_Given' of Rule.cterm' | Del_Relation' of Rule.cterm'
   1.246  
   1.247 -val string_of = Tactic_Def.string_of
   1.248 +  | Derive' of Rule.rls
   1.249 +  | Detail_Set' of Rule.theory' * bool * Rule.rls * term * Selem.result
   1.250 +  | Detail_Set_Inst' of Rule.theory' * bool * Rule.subst * Rule.rls * term * Selem.result
   1.251 +  | End_Detail' of Selem.result
   1.252 +
   1.253 +  | Empty_Tac_
   1.254 +  | Free_Solve'
   1.255 +
   1.256 +  | Init_Proof' of Rule.cterm' list * Celem.spec
   1.257 +  | Model_Problem' of Celem.pblID * 
   1.258 +    Model.itm list *  (* the 'untouched' pbl        *)
   1.259 +    Model.itm list    (* the casually completed met *)
   1.260 +  | Or_to_List' of term * term
   1.261 +  | Refine_Problem' of Celem.pblID * (Model.itm list * (bool * term) list)
   1.262 +  | Refine_Tacitly' of
   1.263 +    Celem.pblID *     (* input*)
   1.264 +    Celem.pblID *     (* the refined from applicable_in                                       *)
   1.265 +    Rule.domID *     (* from new pbt?! filled in specify                                     *)
   1.266 +    Celem.metID *     (* from new pbt?! filled in specify                                     *)
   1.267 +    Model.itm list    (* drop ! 9.03: remains [] for Model_Problem recognizing its activation *)
   1.268 +  | Rewrite' of Rule.theory' * Rule.rew_ord' * Rule.rls * bool * Celem.thm'' * term * Selem.result
   1.269 +  | Rewrite_Asm' of Rule.theory' * Rule.rew_ord' * Rule.rls * bool * Celem.thm'' * term * Selem.result
   1.270 +  | Rewrite_Inst' of Rule.theory' * Rule.rew_ord' * Rule.rls * bool * Rule.subst * Celem.thm'' * term * Selem.result
   1.271 +  | Rewrite_Set' of Rule.theory' * bool * Rule.rls * term * Selem.result
   1.272 +  | Rewrite_Set_Inst' of Rule.theory' * bool * Rule.subst * Rule.rls * term * Selem.result
   1.273 +
   1.274 +  | Specify_Method' of Celem.metID * Model.ori list * Model.itm list
   1.275 +  | Specify_Problem' of Celem.pblID * 
   1.276 +    (bool *                  (* matches	                                  *)
   1.277 +      (Model.itm list *      (* ppc	                                      *)
   1.278 +        (bool * term) list)) (* preconditions                             *)
   1.279 +  | Specify_Theory' of Rule.domID
   1.280 +  | Subproblem' of
   1.281 +    Celem.spec * 
   1.282 +		(Model.ori list) *       (* filled in associate Subproblem'           *)
   1.283 +		term *                   (* filled -"-, headline of calc-head         *)
   1.284 +		Selem.fmz_ *             
   1.285 +    Proof.context *          (* DEPRECATED shifted into loc for all ppobj *)
   1.286 +		term                     (* Subproblem (thyID, pbl) OR cascmd         *)  
   1.287 +  | Substitute' of           
   1.288 +    Rule.rew_ord_ *          (* for re-calculation                        *)
   1.289 +    Rule.rls *               (* for re-calculation                        *)
   1.290 +    Selem.subte *            (* the 'substitution': terms of type bool    *)
   1.291 +    term *                   (* to be substituted into                    *)
   1.292 +    term                     (* resulting from the substitution           *)
   1.293 +  | Tac_ of theory * string * string * string
   1.294 +  | Take' of term | Take_Inst' of term
   1.295 +
   1.296 +fun string_of ma = case ma of
   1.297 +    Init_Proof' (ppc, spec)  => "Init_Proof' " ^ pair2str (strs2str ppc, Celem.spec2str spec)
   1.298 +  | Model_Problem' (pblID, _, _) => "Model_Problem' " ^ strs2str pblID
   1.299 +  | Refine_Tacitly'(p, prefin, domID, metID, _) => "Refine_Tacitly' (" ^ strs2str p ^ ", " ^
   1.300 +    strs2str prefin ^ ", " ^ domID ^ ", " ^ strs2str metID ^ ", pbl-itms)"
   1.301 +  | Refine_Problem' _ => "Refine_Problem' (" ^ (*matchs2str ms*)"..." ^ ")"
   1.302 +  | Add_Given' _ => "Add_Given' "(*^cterm'*)
   1.303 +  | Del_Given' _ => "Del_Given' "(*^cterm'*)
   1.304 +  | Add_Find' _ => "Add_Find' "(*^cterm'*)
   1.305 +  | Del_Find' _ => "Del_Find' "(*^cterm'*)
   1.306 +  | Add_Relation' _ => "Add_Relation' "(*^cterm'*)
   1.307 +  | Del_Relation' _ => "Del_Relation' "(*^cterm'*)
   1.308 +
   1.309 +  | Specify_Theory' domID => "Specify_Theory' " ^ quote domID
   1.310 +  | Specify_Problem' (pI, (ok, _)) =>  "Specify_Problem' " ^ 
   1.311 +    spair2str (strs2str pI, spair2str (bool2str ok, spair2str ("itms2str_ itms", "items2str pre")))
   1.312 +  | Specify_Method' (pI, oris, _) => "Specify_Method' (" ^ 
   1.313 +    Celem.metID2str pI ^ ", " ^ Model.oris2str oris ^ ", )"
   1.314 +
   1.315 +  | Apply_Method' (metID, _, _, _) => "Apply_Method' " ^ strs2str metID
   1.316 +  | Check_Postcond' (pblID, (scval, asm)) => "Check_Postcond' " ^
   1.317 +      (spair2str (strs2str pblID, spair2str (Rule.term2str scval, Rule.terms2str asm)))
   1.318 +
   1.319 +  | Free_Solve' => "Free_Solve'"
   1.320 +
   1.321 +  | Rewrite_Inst' (*subs,thm'*) _ => "Rewrite_Inst' "(*^(pair2str (subs2str subs, spair2str thm'))*)
   1.322 +  | Rewrite' _(*thm'*) => "Rewrite' "(*^(spair2str thm')*)
   1.323 +  | Rewrite_Asm' _(*thm'*) => "Rewrite_Asm' "(*^(spair2str thm')*)
   1.324 +  | Rewrite_Set_Inst' _(*subs,thm'*) => "Rewrite_Set_Inst' "(*^(pair2str (subs2str subs, quote rls))*)
   1.325 +  | Rewrite_Set' (thy', pasm, rls', f, (f', asm)) => "Rewrite_Set' (" ^ thy' ^ "," ^ bool2str pasm ^
   1.326 +    "," ^ Rule.id_rls rls' ^ "," ^ Rule.term2str f ^ ",(" ^ Rule.term2str f' ^ "," ^ Rule.terms2str asm ^ "))"
   1.327 +  | End_Detail' _ => "End_Detail' xxx"
   1.328 +  | Detail_Set' _ => "Detail_Set' xxx"
   1.329 +  | Detail_Set_Inst' _ => "Detail_Set_Inst' xxx"
   1.330 +
   1.331 +  | Derive' rls => "Derive' " ^ Rule.id_rls rls
   1.332 +  | Calculate'  _ => "Calculate' "
   1.333 +  | Substitute' _ => "Substitute' "(*^(subs2str subs)*)    
   1.334 +  | Apply_Assumption' _(* ct's*) => "Apply_Assumption' "(*^(strs2str ct's)*)
   1.335 +
   1.336 +  | Take' _(*cterm'*) => "Take' "(*^(quote cterm'	)*)
   1.337 +  | Take_Inst' _(*cterm'*) => "Take_Inst' "(*^(quote cterm' )*)
   1.338 +  | Subproblem' _(*(spec, oris, _, _, _, pbl_form)*) => 
   1.339 +    "Subproblem' "(*^(pair2str (domID, strs2str ,))*)
   1.340 +  | End_Subproblem' _ => "End_Subproblem'"
   1.341 +  | CAScmd' _(*cterm'*) => "CAScmd' "(*^(quote cterm')*)
   1.342 +
   1.343 +  | Empty_Tac_ => "Empty_Tac_"
   1.344 +  | Tac_ (_, form, id, result) => "Tac_ (thy," ^ form ^ "," ^ id ^ "," ^ result ^ ")"
   1.345 +  | _  => "string_of not impl. for arg";
   1.346  
   1.347  fun input_from_T (Refine_Tacitly' (pI, _, _, _, _)) = Refine_Tacitly pI
   1.348    | input_from_T (Model_Problem' (_, _, _)) = Model_Problem