(* Title: Specify/p-model.sml

    Author: Walther Neuper 170207

    (c) due to copyright terms

 This will be dropped at switch to Isabelle/PIDE .

 *)

 signature PRESENTATION_MODEL =

 sig

   datatype switch_pbl_met = Model_For_Problem_Ref | Model_For_Method_Ref

   type model_out

   val template_args: switch_pbl_met -> References.input -> Ctree.ctree ->

     (switch_pbl_met * model_out) * References.input

   (* for the OLD P_Model.T *)

   type T

   val empty: T

   val to_string: T -> string

   datatype item = (*shall be dropped with PIDE*)

     Correct of TermC.as_string | False of TermC.as_string | Incompl of TermC.as_string

   | Missing of TermC.as_string | Superfl of string | SyntaxE of string | TypeE of string

   type 'a model     (*shall be dropped with PIDE*)

   val from : theory -> I_Model.T -> Pre_Conds.T -> T

   val to_list: 'a model -> 'a list

   val mk_delete: theory -> string -> I_Model.feedback -> Tactic.input

   val mk_additem: string -> TermC.as_string -> Tactic.input

   val item_from_feedback: theory -> I_Model.feedback -> item

 \<^isac_test>\<open>

 (**)

 \<close>

 end

 (**)

 structure P_Model(**) : PRESENTATION_MODEL(**) =

 struct

 (**)

 datatype switch_pbl_met = Model_For_Problem_Ref | Model_For_Method_Ref

 (** for the NEW template for Specification**)

 datatype feedback = Cor | Inc | Sup | True | False

 (*

   legend:

   Cor   correct: the default representation

   Inc   incomplete list, (accessible) markup to be defined

   Sup   superfluous within the current variant from Formalise.model;

         (accessible) markup to be defined

   True  the default representation

   False (accessible) markup to be defined

 *)

 type out_element = UnparseC.term_as_string * feedback

 type field_out = Model_Pattern.m_field * out_element list

 type model_out =

     field_out (* "#Given", feedback: Cor | Inc | Sup *)

   * field_out (* "#Where", feedback: True | False    *)

   * field_out (* "#Find",  feedback: Cor | Inc | Sup *)

   * field_out (* "#Relate",feedback: Cor | Inc | Sup *)

 (*val item_to_out: Proof.context -> I_Model.single -> out_element*)

 fun item_to_out ctxt (_, _, _, _, I_Model.Cor (dsc_ts, _)) =

     (dsc_ts |> Term.list_comb |> UnparseC.term ctxt, Cor)

   | item_to_out ctxt (_, _, _, _, I_Model.Inc (dsc_ts, _)) =

     (dsc_ts |> Term.list_comb |> UnparseC.term ctxt, Inc)

   | item_to_out ctxt ((_, _, _, _, I_Model.Sup dsc_ts): I_Model.single) =

     (dsc_ts |> Term.list_comb |> UnparseC.term ctxt, Sup)

   | item_to_out ctxt im =

     raise ERROR ("P_Model.item_to_out called with " ^ I_Model.single_to_string ctxt im)

 (*val items_to_out: Proof.context -> Model_Pattern.m_field -> I_Model.T -> field_out*)

 fun items_to_out ctxt m_field items =

   (m_field,

     filter (fn (_, _, _, f, _) => f = m_field) items |> map (item_to_out ctxt))

 (*val where_to_out: Proof.context -> bool * term -> out_element*)

 fun where_to_out ctxt (bool, t) =

   (UnparseC.term ctxt t, if bool then True else False)

 (*val wheres_to_out: Proof.context -> (bool * term) list -> field_out*)

 fun wheres_to_out ctxt wheres = ("#Where", map (where_to_out ctxt) wheres)

 (*val model_to_out: Proof.context -> (bool * term) list -> I_Model.T -> field_out list*)

 (* the sequence of the template is maitained *)

 fun model_to_out ctxt where_ model =

   let

     val given = items_to_out ctxt "#Given" model

     val where_ = wheres_to_out ctxt where_

     val find = items_to_out ctxt "#Find" model

     val relate = items_to_out ctxt "#Relate" model

   in (given, where_, find, relate) end

 fun template_args switch_pbl_met input_refs store =

   if not (Ctree.is_pblnd store) then raise ERROR "update code w.r.t. to future design of Solution"

   else

     let

       val Ctree.Nd (Ctree.PblObj {origin = (_, o_refs, _), probl, meth, spec, ctxt, ...}, []) = store

       val (_, pbl_id, met_id) = References.select_input o_refs spec

       val p_model = 

         case switch_pbl_met of

           Model_For_Problem_Ref =>

             let (* the sequence *)

               val {where_rls, where_, ...} = Problem.from_store ctxt pbl_id

               val (_, where_) = Pre_Conds.check ctxt where_rls where_ probl 0

             in model_to_out ctxt where_ probl end

         | Model_For_Method_Ref =>

             let

               val {where_rls, where_ = where_, ...} = MethodC.from_store ctxt met_id

               val (_, where_) = Pre_Conds.check ctxt where_rls where_ meth 0

             in model_to_out ctxt where_ meth end

     in

       ((switch_pbl_met, p_model), input_refs)

     end

 (** types for OLD presentation**)

 type 'a model = 

   {Given : 'a list, Where: 'a list, Find  : 'a list, With : 'a list, Relate: 'a list};

 datatype item = 

     Correct of TermC.as_string (* labels a correct formula (type cterm') *)

   | SyntaxE of string (**)

   | TypeE   of string (**)

   | False   of TermC.as_string (* WN050618 notexistent in itm_: only used in Where *)

   | Incompl of TermC.as_string (**)

   | Superfl of string (**)

   | Missing of TermC.as_string; (*REVIEW: a "missing" item is not shown, thus cannot be marked*)

 type T = item model;

 fun item2str (Correct  s) = "Correct " ^ s

   | item2str (SyntaxE  s) = "SyntaxE " ^ s

   | item2str (TypeE    s) = "TypeE " ^ s

   | item2str (False    s) = "False " ^ s

   | item2str (Incompl  s) = "Incompl " ^ s

   | item2str (Superfl  s) = "Superfl " ^ s

   | item2str (Missing  s) = "Missing " ^ s;

 fun to_string ({Given=Given,Where=Where,

 		 Find=Find,With=With,Relate=Relate}:item model)=

     ("{Given =" ^ ((strs2str' o (map item2str))	 Given ) ^

      ",Where=" ^ ((strs2str' o (map item2str))	 Where) ^

      ",Find  =" ^ ((strs2str' o (map item2str))	 Find  ) ^

      ",With =" ^ ((strs2str' o (map item2str))	 With ) ^

      ",Relate=" ^ ((strs2str' o (map item2str))	 Relate) ^ "}");

 val empty = {Given = [], Where= [], Find  = [], With = [], Relate= []};

 (** build T **)

 fun item_from_feedback thy (I_Model.Cor ((d, ts), _)) = Correct (UnparseC.term_in_thy thy (Input_Descript.join (d, ts)))

   | item_from_feedback _ (I_Model.Syn c) = SyntaxE c

   | item_from_feedback _ (I_Model.Typ c) = TypeE c

   | item_from_feedback thy (I_Model.Inc ((d, ts), _)) = Incompl (UnparseC.term_in_thy thy  (Input_Descript.join (d, ts)))

   | item_from_feedback thy (I_Model.Sup (d, ts)) = Superfl (UnparseC.term_in_thy thy  (Input_Descript.join (d, ts)))

   | item_from_feedback thy (I_Model.Mis (d, pid)) = Missing (UnparseC.term_in_thy thy d ^ " " ^ UnparseC.term_in_thy thy  pid)

   | item_from_feedback _ _ = raise ERROR "item_from_feedback: uncovered definition"

 fun add_sel_ppc (_: theory) sel {Given = gi, Where = wh, Find = fi, With = wi, Relate = re} x =

   case sel of

     "#Given" => {Given = gi @ [x], Where = wh, Find = fi, With = wi, Relate = re}

   | "#Where" => {Given = gi, Where = wh @ [x], Find = fi, With = wi, Relate = re}

   | "#Find"  => {Given = gi, Where = wh, Find = fi @ [x], With = wi, Relate = re}

   | "#Relate"=> {Given = gi, Where = wh, Find = fi, With = wi, Relate = re @ [x]}

   | "#undef" => {Given = gi @ [x], Where = wh, Find = fi, With = wi, Relate = re} (*ori2itmSup*)

   | _  => raise ERROR ("add_sel_ppc tried to select by \"" ^ sel ^ "\"")

 fun add_where {Given = gi, Where = _, Find = fi, With = wi, Relate = re} wh =

   {Given = gi, Where = wh, Find= fi , With = wi, Relate = re}

 fun boolterm2item ctxt (true, term) = Correct (UnparseC.term ctxt term)

   | boolterm2item ctxt(false, term) = False (UnparseC.term ctxt term);

 fun from thy itms where_ =

   let

     fun coll model [] = model

       | coll model ((_, _, _, field, itm_) :: itms) =

         coll (add_sel_ppc thy field model (item_from_feedback thy itm_)) itms;

     val gfr = coll empty itms;

   in add_where gfr (map (boolterm2item (Proof_Context.init_global thy)) where_) end;

 fun mk_delete thy "#Given" itm_ = Tactic.Del_Given (I_Model.to_p_model thy itm_)

   | mk_delete thy "#Find" itm_ = Tactic.Del_Find (I_Model.to_p_model thy itm_)

   | mk_delete thy "#Relate" itm_ = Tactic.Del_Relation (I_Model.to_p_model thy itm_)

   | mk_delete _ str _ = raise ERROR ("mk_delete: called with field \"" ^ str ^ "\"")

 fun mk_additem "#Given" ct = Tactic.Add_Given ct

   | mk_additem "#Find" ct = Tactic.Add_Find ct    

   | mk_additem "#Relate"ct = Tactic.Add_Relation ct

   | mk_additem str _ = raise ERROR ("mk_additem: called with field \"" ^ str ^ "\"")

 fun to_list {Given = gis, Where = whs, Find = fis, With = wis, Relate = res} =

   gis @ whs @ fis @ wis @ res

 (**)end(**);