src/ZF/thy_syntax.ML

fixed comment;

(*  Title:      ZF/thy_syntax.ML
    ID:         $Id$
    Author:     Lawrence C Paulson
    Copyright   1994  University of Cambridge

Additional theory file sections for ZF.
*)


local

(*Inductive definitions theory section.   co is either "" or "Co"*)
fun inductive_decl co =
  let open ThyParse 
    fun mk_intr_name (s,_) =  (*the "op" cancels any infix status*)
        if Syntax.is_identifier s then "op " ^ s  else "_"
    fun mk_params ((((((rec_tms, sdom_sum), ipairs), 
                      monos), con_defs), type_intrs), type_elims) =
      let val big_rec_name = space_implode "_" 
                           (map (scan_to_id o trim) rec_tms)
          and srec_tms = mk_list rec_tms
          and sintrs   = mk_big_list (map snd ipairs)
          val stri_name = big_rec_name ^ "_Intrnl"
      in
         (";\n\n\
          \structure " ^ stri_name ^ " =\n\
          \  struct\n\
          \  val _ = writeln \"" ^ co ^ 
                     "Inductive definition " ^ big_rec_name ^ "\"\n\
          \  val rec_tms\t= map (readtm (sign_of thy) Ind_Syntax.iT) "
                           ^ srec_tms ^ "\n\
          \  and dom_sum\t= readtm (sign_of thy) Ind_Syntax.iT " ^ sdom_sum ^ "\n\
          \  and intr_tms\t= map (readtm (sign_of thy) propT)\n"
                           ^ sintrs ^ "\n\
          \  end;\n\n\
          \val thy = thy |> " ^ co ^ "Ind.add_fp_def_i \n    (" ^ 
             stri_name ^ ".rec_tms, " ^
             stri_name ^ ".dom_sum, " ^
             stri_name ^ ".intr_tms)"
         ,
          "structure " ^ big_rec_name ^ " =\n\
          \ let\n\
          \  val _ = writeln \"Proofs for " ^ co ^ 
                     "Inductive definition " ^ big_rec_name ^ "\"\n\
          \  structure Result = " ^ co ^ "Ind_section_Fun\n\
          \\t  (open " ^ stri_name ^ "\n\
          \\t   val thy\t\t= thy\n\
          \\t   val monos\t\t= " ^ monos ^ "\n\
          \\t   val con_defs\t\t= " ^ con_defs ^ "\n\
          \\t   val type_intrs\t= " ^ type_intrs ^ "\n\
          \\t   val type_elims\t= " ^ type_elims ^ ")\n\
          \ in\n\
          \  struct\n\
          \  val " ^ mk_list (map mk_intr_name ipairs) ^ " = Result.intrs;\n\
          \  open Result\n\
          \  end\n\
          \ end;\n\n\
          \structure " ^ stri_name ^ " = struct end;\n\n"
         )
      end
    val domains = "domains" $$-- enum1 "+" string --$$ "<=" -- !! string
    val ipairs  = "intrs"   $$-- repeat1 (ident -- !! string)
    fun optstring s = optional (s $$-- string >> trim) "[]"
  in domains -- ipairs -- optstring "monos" -- optstring "con_defs"
             -- optstring "type_intrs" -- optstring "type_elims"
     >> mk_params
  end;


(*Datatype definitions theory section.   co is either "" or "Co"*)
fun datatype_decl co =
  let open ThyParse 
      (*generate strings*)
      fun mk_const ((x, y), z) = mk_triple (x, mk_list y, z);
      val mk_data = mk_list o map mk_const o snd
      val mk_scons = mk_big_list o map mk_data
      fun mk_intr_name s =  (*the "op" cancels any infix status*)
          if Syntax.is_identifier s then "op " ^ s ^ "_I" else "_"
      fun mk_params ((((dom, rec_pairs), monos), type_intrs), type_elims) =
        let val rec_names = map (scan_to_id o trim o fst) rec_pairs
            val big_rec_name = space_implode "_" rec_names
            and srec_tms = mk_list (map fst rec_pairs)
            and scons    = mk_scons rec_pairs
            and sdom_sum = 
                if dom = "" then  (*default domain: univ or quniv*)
                    "Ind_Syntax." ^ co ^ "data_domain rec_tms"
                else "readtm (sign_of thy) Ind_Syntax.iT " ^ dom
            val stri_name = big_rec_name ^ "_Intrnl"
            val con_names = flat (map (map (trim o #1 o #1) o snd) rec_pairs)
        in
           (";\n\n\
            \structure " ^ stri_name ^ " =\n\
            \  struct\n\
            \  val _ = writeln \"" ^ co ^ 
                       "Datatype definition " ^ big_rec_name ^ "\"\n\
            \  val rec_tms\t= map (readtm (sign_of thy) Ind_Syntax.iT) " ^ srec_tms ^ "\n\
            \  val dom_sum\t= " ^ sdom_sum ^ "\n\
            \  and con_ty_lists\t= Ind_Syntax.read_constructs (sign_of thy)\n" 
                   ^ scons ^ "\n\
            \  val intr_tms\t= Ind_Syntax.mk_all_intr_tms (sign_of thy) (rec_tms, con_ty_lists)\n\
            \  end;\n\n\
            \val thy = thy |> " ^ co ^ "Ind.add_constructs_def(" ^ 
                 mk_list (map quote rec_names) ^ ", " ^ 
                 stri_name ^ ".con_ty_lists) \n\
            \              |> " ^ co ^ "Ind.add_fp_def_i \n    (" ^ 
               stri_name ^ ".rec_tms, " ^
               stri_name ^ ".dom_sum, " ^
               stri_name ^ ".intr_tms)"
           ,
            "structure " ^ big_rec_name ^ " =\n\
            \ let\n\
            \  val _ = writeln \"Proofs for " ^ co ^ 
                       "Datatype definition " ^ big_rec_name ^ "\"\n\
            \  structure Result = " ^ co ^ "Data_section_Fun\n\
            \\t  (open " ^ stri_name ^ "\n\
            \\t   val thy\t\t= thy\n\
            \\t   val big_rec_name\t= Sign.intern_const (sign_of thy) \"" ^ big_rec_name ^ "\"\n\
            \\t   val monos\t\t= " ^ monos ^ "\n\
            \\t   val type_intrs\t= " ^ type_intrs ^ "\n\
            \\t   val type_elims\t= " ^ type_elims ^ ");\n\
            \ in\n\
            \  struct\n\
            \  val " ^ mk_list (map mk_intr_name con_names) ^ " = Result.intrs;\n\
            \  open Result\n\
            \  end\n\
            \ end;\n\n\
            \structure " ^ stri_name ^ " = struct end;\n\n"
           )
        end
      fun optstring s = optional (s $$-- string) "\"[]\"" >> trim
      val string_list = "(" $$-- list1 string --$$ ")" || ThyParse.empty;
      val construct = name -- string_list -- opt_mixfix;
  in optional ("<=" $$-- string) "" --
     enum1 "and" (string --$$ "=" -- enum1 "|" construct) --
     optstring "monos" -- optstring "type_intrs" -- optstring "type_elims"
     >> mk_params
end;



(** augment thy syntax **)

in

val _ = ThySyn.add_syntax
 ["inductive", "coinductive", "datatype", "codatatype", "and", "|",
  "<=", "domains", "intrs", "monos", "con_defs", "type_intrs",
  "type_elims"]
 [("inductive", inductive_decl ""),
  ("coinductive", inductive_decl "Co"),
  ("datatype", datatype_decl ""),
  ("codatatype", datatype_decl "Co")];

end;