--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Nominal/Parser.thy Thu Feb 25 08:40:52 2010 +0100
@@ -0,0 +1,240 @@
+theory Parser
+imports "Nominal2_Atoms" "Nominal2_Eqvt" "Nominal2_Supp"
+begin
+
+atom_decl name
+
+
+section{* Interface for nominal_datatype *}
+
+text {*
+
+Nominal-Datatype-part:
+
+1st Arg: string list
+ ^^^^^^^^^^^
+ strings of the types to be defined
+
+2nd Arg: (string list * binding * mixfix * (binding * typ list * mixfix) list) list
+ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ type(s) to be defined constructors list
+ (ty args, name, syn) (name, typs, syn)
+
+Binder-Function-part:
+
+3rd Arg: (binding * typ option * mixfix) list
+ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ binding function(s)
+ to be defined
+ (name, type, syn)
+
+4th Arg: term list
+ ^^^^^^^^^
+ the equations of the binding functions
+ (Trueprop equations)
+*}
+
+text {*****************************************************}
+ML {*
+(* nominal datatype parser *)
+local
+ structure P = OuterParse
+in
+
+val _ = OuterKeyword.keyword "bind"
+val anno_typ = Scan.option (P.name --| P.$$$ "::") -- P.typ
+
+(* binding specification *)
+(* should use and_list *)
+val bind_parser =
+ P.enum "," ((P.$$$ "bind" |-- P.term) -- (P.$$$ "in" |-- P.name))
+
+val constr_parser =
+ P.binding -- Scan.repeat anno_typ
+
+(* datatype parser *)
+val dt_parser =
+ ((P.type_args -- P.binding -- P.opt_infix) >> P.triple1) --
+ (P.$$$ "=" |-- P.enum1 "|" ((constr_parser -- bind_parser -- P.opt_mixfix) >> P.triple_swap))
+
+(* function equation parser *)
+val fun_parser =
+ Scan.optional (P.$$$ "binder" |-- P.fixes -- SpecParse.where_alt_specs) ([],[])
+
+(* main parser *)
+val main_parser =
+ (P.and_list1 dt_parser) -- fun_parser
+
+end
+*}
+
+(* adds "_raw" to the end of constants and types *)
+ML {*
+fun add_raw s = s ^ "_raw"
+fun add_raws ss = map add_raw ss
+fun raw_bind bn = Binding.suffix_name "_raw" bn
+
+fun replace_str ss s =
+ case (AList.lookup (op=) ss s) of
+ SOME s' => s'
+ | NONE => s
+
+fun replace_typ ty_ss (Type (a, Ts)) = Type (replace_str ty_ss a, map (replace_typ ty_ss) Ts)
+ | replace_typ ty_ss T = T
+
+fun raw_dts ty_ss dts =
+let
+ val ty_ss' = ty_ss ~~ (add_raws ty_ss)
+
+ fun raw_dts_aux1 (bind, tys, mx) =
+ (raw_bind bind, map (replace_typ ty_ss') tys, mx)
+
+ fun raw_dts_aux2 (ty_args, bind, mx, constrs) =
+ (ty_args, raw_bind bind, mx, map raw_dts_aux1 constrs)
+in
+ map raw_dts_aux2 dts
+end
+
+fun replace_aterm trm_ss (Const (a, T)) = Const (replace_str trm_ss a, T)
+ | replace_aterm trm_ss (Free (a, T)) = Free (replace_str trm_ss a, T)
+ | replace_aterm trm_ss trm = trm
+
+fun replace_term trm_ss ty_ss trm =
+ trm |> Term.map_aterms (replace_aterm trm_ss) |> map_types (replace_typ ty_ss)
+*}
+
+ML {*
+fun get_constrs dts =
+ flat (map (fn (_, _, _, constrs) => constrs) dts)
+
+fun get_typed_constrs dts =
+ flat (map (fn (_, bn, _, constrs) =>
+ (map (fn (bn', _, _) => (Binding.name_of bn, Binding.name_of bn')) constrs)) dts)
+
+fun get_constr_strs dts =
+ map (fn (bn, _, _) => Binding.name_of bn) (get_constrs dts)
+
+fun get_bn_fun_strs bn_funs =
+ map (fn (bn_fun, _, _) => Binding.name_of bn_fun) bn_funs
+*}
+
+ML {*
+fun raw_dts_decl dt_names dts lthy =
+let
+ val thy = ProofContext.theory_of lthy
+ val conf = Datatype.default_config
+
+ val dt_names' = add_raws dt_names
+ val dt_full_names = map (Sign.full_bname thy) dt_names
+ val dts' = raw_dts dt_full_names dts
+in
+ lthy
+ |> Local_Theory.theory_result (Datatype.add_datatype conf dt_names' dts')
+end
+*}
+
+ML {*
+fun raw_bn_fun_decl dt_names dts bn_funs bn_eqs lthy =
+let
+ val thy = ProofContext.theory_of lthy
+
+ val dt_names' = add_raws dt_names
+ val dt_full_names = map (Sign.full_bname thy) dt_names
+ val dt_full_names' = map (Sign.full_bname thy) dt_names'
+
+ val ctrs_names = map (Sign.full_bname thy) (get_constr_strs dts)
+ val ctrs_names' = map (fn (x, y) => (Sign.full_bname_path thy (add_raw x) (add_raw y)))
+ (get_typed_constrs dts)
+
+ val bn_fun_strs = get_bn_fun_strs bn_funs
+ val bn_fun_strs' = add_raws bn_fun_strs
+
+ val bn_funs' = map (fn (bn, opt_ty, mx) =>
+ (raw_bind bn, Option.map (replace_typ (dt_full_names ~~ dt_full_names')) opt_ty, mx)) bn_funs
+
+ val bn_eqs' = map (fn trm =>
+ (Attrib.empty_binding,
+ (replace_term ((ctrs_names ~~ ctrs_names') @ (bn_fun_strs ~~ bn_fun_strs')) (dt_full_names ~~ dt_full_names') trm))) bn_eqs
+in
+ if null bn_eqs
+ then (([], []), lthy)
+ else Primrec.add_primrec bn_funs' bn_eqs' lthy
+end
+*}
+
+ML {*
+fun nominal_datatype2 dts bn_funs bn_eqs lthy =
+let
+ val dts_names = map (fn (_, s, _, _) => Binding.name_of s) dts
+in
+ lthy
+ |> raw_dts_decl dts_names dts
+ ||>> raw_bn_fun_decl dts_names dts bn_funs bn_eqs
+end
+*}
+
+ML {*
+(* makes a full named type out of a binding with tvars applied to it *)
+fun mk_type thy bind tvrs =
+ Type (Sign.full_name thy bind, map (fn s => TVar ((s, 0), [])) tvrs)
+
+fun get_constrs2 thy dts =
+let
+ val dts' = map (fn (tvrs, tname, _, constrs) => (mk_type thy tname tvrs, constrs)) dts
+in
+ flat (map (fn (ty, constrs) => map (fn (bn, tys, mx) => (bn, tys ---> ty, mx)) constrs) dts')
+end
+*}
+
+ML {*
+fun nominal_datatype2_cmd (dt_strs, (bn_fun_strs, bn_eq_strs)) lthy =
+let
+ val thy = ProofContext.theory_of lthy
+
+ fun prep_typ ((tvs, tname, mx), _) = (tname, length tvs, mx);
+
+ (* adding the types for parsing datatypes *)
+ val lthy_tmp = lthy
+ |> Local_Theory.theory (Sign.add_types (map prep_typ dt_strs))
+
+ fun prep_cnstr lthy (((cname, atys), mx), binders) =
+ (cname, map (Syntax.read_typ lthy o snd) atys, mx)
+
+ fun prep_dt lthy ((tvs, tname, mx), cnstrs) =
+ (tvs, tname, mx, map (prep_cnstr lthy) cnstrs)
+
+ (* parsing the datatypes *)
+ val dts_prep = map (prep_dt lthy_tmp) dt_strs
+
+ (* adding constructors for parsing functions *)
+ val lthy_tmp2 = lthy_tmp
+ |> Local_Theory.theory (Sign.add_consts_i (get_constrs2 thy dts_prep))
+
+ val (bn_fun_aux, bn_eq_aux) = fst (Specification.read_spec bn_fun_strs bn_eq_strs lthy_tmp2)
+
+ fun prep_bn_fun ((bn, T), mx) = (bn, SOME T, mx)
+
+ fun prep_bn_eq (attr, t) = t
+
+ val bn_fun_prep = map prep_bn_fun bn_fun_aux
+ val bn_eq_prep = map prep_bn_eq bn_eq_aux
+in
+ nominal_datatype2 dts_prep bn_fun_prep bn_eq_prep lthy |> snd
+end
+*}
+
+(* Command Keyword *)
+ML {*
+let
+ val kind = OuterKeyword.thy_decl
+in
+ OuterSyntax.local_theory "nominal_datatype" "test" kind
+ (main_parser >> nominal_datatype2_cmd)
+end
+*}
+
+
+end
+
+
+