(* Title:  Specify/p-spec.sml

   Author: Walther Neuper

   (c) due to copyright terms

Major parts will be dropped at switch to Isabelle/PIDE.

Thus the switch to I_Model.T is prepared quick and dirty.

*)

signature PRESENTATION_SPECIFICATION =

sig

  type record

(*/------- rename -------\*)

  datatype p_model =

      Find of TermC.as_string list

    | Given of TermC.as_string list

    | Relate of TermC.as_string list

  val appl_add': ThyC.id -> O_Model.T -> I_Model.T -> Model_Pattern.T ->

    string * TermC.as_string -> I_Model.single

  val appl_adds: ThyC.id -> O_Model.T -> I_Model.T -> Model_Pattern.T ->

    (Model_Def.m_field * TermC.as_string) list -> I_Model.T

  val eq7: ''a * ''b -> ''a * (''b * 'c) -> bool

  val fstr2itm_: theory -> Model_Pattern.T -> Model_Def.m_field * string ->

    int list * bool * Model_Def.m_field * (I_Model.feedback * Position.T)

  val imodel2fstr: p_model list -> (string * TermC.as_string) list

  val is_e_ts: term list -> bool

  val itms2fstr: Proof.context -> I_Model.single -> string * string

  val par2fstr: I_Model.single -> string * TermC.as_string

  val unknown_expl: ThyC.id -> Model_Pattern.T -> (Model_Def.m_field * string) list -> I_Model.T

(*\----- from isac_test for Minisubpbl*)

\<^isac_test>\<open>

(**)

\<close>

(*\------- rename -------/*)

end

(**)

structure P_Spec(**): PRESENTATION_SPECIFICATION(**) =

struct

(**)

  type record = {thy_id: ThyC.id, pbl_id: Problem.id,           (* headline of Problem *)

    givens: TermC.as_string list, wheres: TermC.as_string list, (* Model.T             *)

      find: TermC.as_string, relates: TermC.as_string list,

    rthy_id: ThyC.id, rpbl_id: Problem.id, rmet_id: MethodC.id}  (* References.T        *)

fun flattup2 (a, (b ,c, d, e)) = (a, b, c, d, e)

(** handle an input P_Specific'action **)

datatype p_model = 

  Given of TermC.as_string list

(*Where is still not input*) 

| Find  of TermC.as_string list

| Relate  of TermC.as_string list

fun is_e_ts [] = true

  | is_e_ts [Const (\<^const_name>\<open>Nil\<close>, _)] = true

  | is_e_ts _ = false;

fun appl_add' dI oris (model: I_Model.T) pbt (sel, ct) = 

  let 

     val ctxt = Know_Store.get_via_last_thy dI |> Proof_Context.init_global;

  in

    (*/------------ replace by ParseC.term_position ------------------\*)

    case ParseC.term_opt ctxt ct of

    (*\------------ replace by ParseC.term_position ------------------/*)

	    NONE => (0, [], false, sel, (I_Model.Syn ct, Position.none))

	  | SOME t =>

	    (case O_Model.contains ctxt sel oris t of

        ("", ori', all) =>

          (case I_Model.is_notyet_input ctxt model all ori' pbt of

            ("", itm)  => itm

          | (msg,_) => raise ERROR ("P_Spec.appl_add': " ^ msg))

      | (_, (i, v, _, d, ts), _) =>

        if is_e_ts ts

        then (i, v, false, sel, (I_Model.Inc (d, ts), Position.none))

        else (i, v, false, sel, (I_Model.Sup (d, ts), Position.none)))

   end

(* generate preliminary itm_ from a string (with field "#Given" etc.) *)

fun eq7 (f, d) (f', (d', _)) = f = f' andalso d = d';

fun fstr2itm_ thy pbt (f, str) =

  let

    (*/------------ replace by ParseC.term_position ? ------------\*)

    val topt = ParseC.term_opt (Proof_Context.init_global thy) str

    (*\------------ replace by ParseC.term_position ? ------------/*)

  in

    case topt of

      NONE => ([], false, f, (I_Model.Syn str, Position.none))

    | SOME ct => 

	    let

	      val (d, ts) = Input_Descript.split ct

	      val popt = find_first (eq7 (f, d)) pbt

	    in

	      case popt of

	        NONE => ([1](*??*), true(*??*), f, (I_Model.Sup (d, ts), Position.none))

	      | SOME (f, (d, id)) => ([1], true, f, (I_Model.Cor (d, ts), Position.none))

	    end

  end

(*.input into empty PblObj, i.e. empty fmz+origin (unknown example).*)

fun unknown_expl dI pbt selcts =

  let

    val thy = Know_Store.get_via_last_thy dI

    val its_ = map (fstr2itm_ thy pbt) selcts

    val its = O_Model.add_enumerate its_ 

  in map flattup2 its end

fun eq_dsc ((_, _, _, _, (itm_, _)), (_, _, _, _, (iitm_, _))) =

  (I_Model.descriptor itm_ = I_Model.descriptor iitm_)

fun add itm (itms: I_Model.T) = if member eq_dsc itms itm then itms else itms @ [itm] (* @ new itm *)

fun appl_adds dI [] _ pbt selcts = unknown_expl dI pbt selcts

    (*already present itms in model are being overwritten*)

  | appl_adds _ _ (model: I_Model.T) _ [] = model

  | appl_adds dI oris (model: I_Model.T) pbt (selct :: ss) =

    let val itm = appl_add' dI oris model pbt selct;

    in appl_adds dI oris (add itm model) pbt ss end

fun par2fstr (_, _, _, f, (I_Model.Syn s, _)) = (f, s)

  | par2fstr itm = raise ERROR ("par2fstr: called with " ^

    I_Model.single_to_string (ContextC.for_ERROR ()) itm)

fun itms2fstr _ (_, _, _, f, (I_Model.Cor (d, ts), _)) = (f, Input_Descript.join''' (d, ts))

  | itms2fstr _ (_, _, _, f, (I_Model.Syn str, _)) = (f, str)

  | itms2fstr _ (_, _, _, f, (I_Model.Inc (d, ts), _)) = (f, Input_Descript.join''' (d,ts))

  | itms2fstr _ (_, _, _, f, (I_Model.Sup (d, ts), _)) = (f, Input_Descript.join''' (d, ts))

fun imodel2fstr iitems = 

  let 

    fun xxx is [] = is

	    | xxx is ((Given strs)::iis) = xxx (is @ (map (pair "#Given") strs)) iis

	    | xxx is ((Find strs)::iis) = xxx (is @ (map (pair "#Find") strs)) iis

	    | xxx is ((Relate strs)::iis) = xxx (is @ (map (pair "#Relate") strs)) iis

  in xxx [] iitems end;

(**)end (**)