(* Title: HOL/Tools/BNF/bnf_fp_def_sugar.ML
Author: Jasmin Blanchette, TU Muenchen
Author: Martin Desharnais, TU Muenchen
Copyright 2012, 2013, 2014
Sugared datatype and codatatype constructions.
*)
signature BNF_FP_DEF_SUGAR =
sig
type fp_ctr_sugar =
{ctrXs_Tss: typ list list,
ctor_iff_dtor: thm,
ctr_defs: thm list,
ctr_sugar: Ctr_Sugar.ctr_sugar,
ctr_transfers: thm list,
case_transfers: thm list,
disc_transfers: thm list,
sel_transfers: thm list}
type fp_bnf_sugar =
{map_thms: thm list,
map_disc_iffs: thm list,
map_selss: thm list list,
rel_injects: thm list,
rel_distincts: thm list,
rel_sels: thm list,
rel_intros: thm list,
rel_cases: thm list,
pred_injects: thm list,
set_thms: thm list,
set_selssss: thm list list list list,
set_introssss: thm list list list list,
set_cases: thm list}
type fp_co_induct_sugar =
{co_rec: term,
common_co_inducts: thm list,
co_inducts: thm list,
co_rec_def: thm,
co_rec_thms: thm list,
co_rec_discs: thm list,
co_rec_disc_iffs: thm list,
co_rec_selss: thm list list,
co_rec_codes: thm list,
co_rec_transfers: thm list,
co_rec_o_maps: thm list,
common_rel_co_inducts: thm list,
rel_co_inducts: thm list,
common_set_inducts: thm list,
set_inducts: thm list}
type fp_sugar =
{T: typ,
BT: typ,
X: typ,
fp: BNF_Util.fp_kind,
fp_res_index: int,
fp_res: BNF_FP_Util.fp_result,
pre_bnf: BNF_Def.bnf,
fp_bnf: BNF_Def.bnf,
absT_info: BNF_Comp.absT_info,
fp_nesting_bnfs: BNF_Def.bnf list,
live_nesting_bnfs: BNF_Def.bnf list,
fp_ctr_sugar: fp_ctr_sugar,
fp_bnf_sugar: fp_bnf_sugar,
fp_co_induct_sugar: fp_co_induct_sugar}
val transfer_plugin: string
val co_induct_of: 'a list -> 'a
val strong_co_induct_of: 'a list -> 'a
val morph_fp_bnf_sugar: morphism -> fp_bnf_sugar -> fp_bnf_sugar
val morph_fp_co_induct_sugar: morphism -> fp_co_induct_sugar -> fp_co_induct_sugar
val morph_fp_ctr_sugar: morphism -> fp_ctr_sugar -> fp_ctr_sugar
val morph_fp_sugar: morphism -> fp_sugar -> fp_sugar
val transfer_fp_sugar: theory -> fp_sugar -> fp_sugar
val fp_sugar_of: Proof.context -> string -> fp_sugar option
val fp_sugar_of_global: theory -> string -> fp_sugar option
val fp_sugars_of: Proof.context -> fp_sugar list
val fp_sugars_of_global: theory -> fp_sugar list
val fp_sugars_interpretation: string -> (fp_sugar list -> local_theory -> local_theory) ->
theory -> theory
val interpret_fp_sugars: (string -> bool) -> fp_sugar list -> local_theory -> local_theory
val register_fp_sugars_raw: fp_sugar list -> local_theory -> local_theory
val register_fp_sugars: (string -> bool) -> fp_sugar list -> local_theory -> local_theory
val merge_type_args: BNF_Util.fp_kind -> ''a list * ''a list -> ''a list
val type_args_named_constrained_of_spec: (((('a * 'b) * 'c) * 'd) * 'e) * 'f -> 'a
val type_binding_of_spec: (((('a * 'b) * 'c) * 'd) * 'e) * 'f -> 'b
val mixfix_of_spec: ((('a * 'b) * 'c) * 'd) * 'e -> 'b
val mixfixed_ctr_specs_of_spec: (('a * 'b) * 'c) * 'd -> 'b
val map_binding_of_spec: ('a * ('b * 'c * 'd)) * 'e -> 'b
val rel_binding_of_spec: ('a * ('b * 'c * 'd)) * 'e -> 'c
val pred_binding_of_spec: ('a * ('b * 'c * 'd)) * 'e -> 'd
val sel_default_eqs_of_spec: 'a * 'b -> 'b
val mk_parametricity_goal: Proof.context -> term list -> term -> term -> term
val flat_corec_preds_predsss_gettersss: 'a list -> 'a list list list -> 'a list list list ->
'a list
val mk_ctor: typ list -> term -> term
val mk_dtor: typ list -> term -> term
val liveness_of_fp_bnf: int -> BNF_Def.bnf -> bool list
val nesting_bnfs: Proof.context -> typ list list list -> typ list -> BNF_Def.bnf list
val massage_simple_notes: string -> (bstring * 'a list * (int -> 'b)) list ->
((binding * 'c list) * ('a list * 'b) list) list
val massage_multi_notes: string list -> typ list ->
(string * 'a list list * (string -> 'b)) list ->
((binding * 'b) * ('a list * 'c list) list) list
val define_ctrs_dtrs_for_type: string -> typ -> term -> term -> thm -> thm -> int -> int list ->
term -> binding list -> mixfix list -> typ list list -> local_theory ->
(term list list * term list * thm * thm list) * local_theory
val wrap_ctrs: (string -> bool) -> BNF_Util.fp_kind -> bool -> string -> thm -> int -> int list ->
thm -> thm -> binding list -> binding list list -> term list -> term list -> thm -> thm list ->
local_theory -> Ctr_Sugar.ctr_sugar * local_theory
val derive_map_set_rel_pred_thms: (string -> bool) -> BNF_Util.fp_kind -> int -> typ list ->
typ list -> typ -> typ -> thm list -> thm list -> thm list -> thm list -> thm list ->
thm list -> thm list -> thm list -> thm list -> thm list -> string -> BNF_Def.bnf ->
BNF_Def.bnf list -> typ -> term -> thm -> thm -> thm -> thm list -> thm -> thm -> thm list ->
thm -> thm list -> thm list -> thm list -> typ list list -> term -> Ctr_Sugar.ctr_sugar ->
local_theory ->
(thm list * thm list * thm list list * thm list * thm list * thm list * thm list * thm list
* thm list * thm list * thm list list list list * thm list list list list * thm list
* thm list * thm list * thm list * thm list) * local_theory
type lfp_sugar_thms = (thm list * thm * Token.src list) * (thm list list * Token.src list)
val morph_lfp_sugar_thms: morphism -> lfp_sugar_thms -> lfp_sugar_thms
val transfer_lfp_sugar_thms: theory -> lfp_sugar_thms -> lfp_sugar_thms
type gfp_sugar_thms =
((thm list * thm) list * (Token.src list * Token.src list))
* thm list list
* thm list list
* (thm list list * Token.src list)
* (thm list list list * Token.src list)
val morph_gfp_sugar_thms: morphism -> gfp_sugar_thms -> gfp_sugar_thms
val transfer_gfp_sugar_thms: theory -> gfp_sugar_thms -> gfp_sugar_thms
val mk_co_recs_prelims: Proof.context -> BNF_Util.fp_kind -> typ list list list -> typ list ->
typ list -> typ list -> typ list -> int list -> int list list -> term list ->
term list
* (typ list list * typ list list list list * term list list * term list list list list) option
* (string * term list * term list list
* (((term list list * term list list * term list list list list * term list list list list)
* term list list list) * typ list)) option
val repair_nullary_single_ctr: typ list list -> typ list list
val mk_corec_p_pred_types: typ list -> int list -> typ list list
val mk_corec_fun_arg_types: typ list list list -> typ list -> typ list -> typ list -> int list ->
int list list -> term ->
typ list list
* (typ list list list list * typ list list list * typ list list list list * typ list)
val define_co_rec_as: BNF_Util.fp_kind -> typ list -> typ -> binding -> term -> local_theory ->
(term * thm) * local_theory
val define_rec:
typ list list * typ list list list list * term list list * term list list list list ->
(string -> binding) -> typ list -> typ list -> term list -> term -> Proof.context ->
(term * thm) * Proof.context
val define_corec: 'a * term list * term list list
* (((term list list * term list list * term list list list list * term list list list list)
* term list list list) * typ list) -> (string -> binding) -> 'b list -> typ list ->
term list -> term -> local_theory -> (term * thm) * local_theory
val mk_induct_attrs: term list list -> Token.src list
val mk_coinduct_attrs: typ list -> term list list -> term list list -> int list list ->
Token.src list * Token.src list
val derive_induct_recs_thms_for_types: (string -> bool) -> BNF_Def.bnf list ->
('a * typ list list list list * term list list * 'b) option -> thm -> thm list ->
BNF_Def.bnf list -> BNF_Def.bnf list -> typ list -> typ list -> typ list ->
typ list list list -> thm list -> thm list -> thm list -> term list list -> thm list list ->
term list -> thm list -> Proof.context -> lfp_sugar_thms
val derive_coinduct_thms_for_types: bool -> (term -> term) -> BNF_Def.bnf list -> thm ->
thm list -> BNF_Def.bnf list -> typ list -> typ list -> typ list list list -> int list ->
thm list -> thm list -> (thm -> thm) -> thm list list -> Ctr_Sugar.ctr_sugar list ->
Proof.context -> (thm list * thm) list
val derive_coinduct_corecs_thms_for_types: BNF_Def.bnf list ->
string * term list * term list list
* (((term list list * term list list * term list list list list * term list list list list)
* term list list list) * typ list) ->
thm -> thm list -> thm list -> thm list -> BNF_Def.bnf list -> typ list -> typ list ->
typ list -> typ list list list -> int list list -> int list list -> int list -> thm list ->
thm list -> (thm -> thm) -> thm list list -> Ctr_Sugar.ctr_sugar list -> term list ->
thm list -> Proof.context -> gfp_sugar_thms
val co_datatypes: BNF_Util.fp_kind -> (mixfix list -> binding list -> binding list ->
binding list -> binding list list -> binding list -> (string * sort) list ->
typ list * typ list list -> BNF_Def.bnf list -> BNF_Comp.absT_info list -> local_theory ->
BNF_FP_Util.fp_result * local_theory) ->
Ctr_Sugar.ctr_options
* ((((((binding option * (typ * sort)) list * binding) * mixfix)
* ((binding, binding * typ) Ctr_Sugar.ctr_spec * mixfix) list) *
(binding * binding * binding))
* term list) list ->
local_theory -> local_theory
val co_datatype_cmd: BNF_Util.fp_kind ->
(mixfix list -> binding list -> binding list -> binding list -> binding list list ->
binding list -> (string * sort) list -> typ list * typ list list -> BNF_Def.bnf list ->
BNF_Comp.absT_info list -> local_theory -> BNF_FP_Util.fp_result * Proof.context) ->
((Proof.context -> Plugin_Name.filter) * bool)
* ((((((binding option * (string * string option)) list * binding) * mixfix)
* ((binding, binding * string) Ctr_Sugar.ctr_spec * mixfix) list)
* (binding * binding * binding)) * string list) list ->
Proof.context -> local_theory
val parse_ctr_arg: (binding * string) parser
val parse_ctr_specs: ((binding, binding * string) Ctr_Sugar.ctr_spec * mixfix) list parser
val parse_spec: ((((((binding option * (string * string option)) list * binding) * mixfix)
* ((binding, binding * string) Ctr_Sugar.ctr_spec * mixfix) list)
* (binding * binding * binding)) * string list) parser
val parse_co_datatype: (Ctr_Sugar.ctr_options_cmd
* ((((((binding option * (string * string option)) list * binding) * mixfix)
* ((binding, binding * string) Ctr_Sugar.ctr_spec * mixfix) list)
* (binding * binding * binding)) * string list) list) parser
val parse_co_datatype_cmd: BNF_Util.fp_kind -> (mixfix list -> binding list -> binding list ->
binding list -> binding list list -> binding list -> (string * sort) list ->
typ list * typ list list -> BNF_Def.bnf list -> BNF_Comp.absT_info list -> local_theory ->
BNF_FP_Util.fp_result * local_theory) ->
(local_theory -> local_theory) parser
end;
structure BNF_FP_Def_Sugar : BNF_FP_DEF_SUGAR =
struct
open Ctr_Sugar
open BNF_FP_Rec_Sugar_Util
open BNF_Util
open BNF_Comp
open BNF_Def
open BNF_FP_Util
open BNF_FP_Def_Sugar_Tactics
val Eq_prefix = "Eq_";
val case_transferN = "case_transfer";
val ctor_iff_dtorN = "ctor_iff_dtor";
val ctr_transferN = "ctr_transfer";
val disc_transferN = "disc_transfer";
val sel_transferN = "sel_transfer";
val corec_codeN = "corec_code";
val corec_transferN = "corec_transfer";
val map_disc_iffN = "map_disc_iff";
val map_o_corecN = "map_o_corec";
val map_selN = "map_sel";
val pred_injectN = "pred_inject";
val rec_o_mapN = "rec_o_map";
val rec_transferN = "rec_transfer";
val set_casesN = "set_cases";
val set_introsN = "set_intros";
val set_inductN = "set_induct";
val set_selN = "set_sel";
type fp_ctr_sugar =
{ctrXs_Tss: typ list list,
ctor_iff_dtor: thm,
ctr_defs: thm list,
ctr_sugar: Ctr_Sugar.ctr_sugar,
ctr_transfers: thm list,
case_transfers: thm list,
disc_transfers: thm list,
sel_transfers: thm list};
type fp_bnf_sugar =
{map_thms: thm list,
map_disc_iffs: thm list,
map_selss: thm list list,
rel_injects: thm list,
rel_distincts: thm list,
rel_sels: thm list,
rel_intros: thm list,
rel_cases: thm list,
pred_injects: thm list,
set_thms: thm list,
set_selssss: thm list list list list,
set_introssss: thm list list list list,
set_cases: thm list};
type fp_co_induct_sugar =
{co_rec: term,
common_co_inducts: thm list,
co_inducts: thm list,
co_rec_def: thm,
co_rec_thms: thm list,
co_rec_discs: thm list,
co_rec_disc_iffs: thm list,
co_rec_selss: thm list list,
co_rec_codes: thm list,
co_rec_transfers: thm list,
co_rec_o_maps: thm list,
common_rel_co_inducts: thm list,
rel_co_inducts: thm list,
common_set_inducts: thm list,
set_inducts: thm list};
type fp_sugar =
{T: typ,
BT: typ,
X: typ,
fp: fp_kind,
fp_res_index: int,
fp_res: fp_result,
pre_bnf: bnf,
fp_bnf: bnf,
absT_info: absT_info,
fp_nesting_bnfs: bnf list,
live_nesting_bnfs: bnf list,
fp_ctr_sugar: fp_ctr_sugar,
fp_bnf_sugar: fp_bnf_sugar,
fp_co_induct_sugar: fp_co_induct_sugar};
val transfer_plugin = Plugin_Name.declare_setup @{binding transfer};
fun co_induct_of (i :: _) = i;
fun strong_co_induct_of [_, s] = s;
fun morph_fp_bnf_sugar phi ({map_thms, map_disc_iffs, map_selss, rel_injects, rel_distincts,
rel_sels, rel_intros, rel_cases, pred_injects, set_thms, set_selssss, set_introssss,
set_cases} : fp_bnf_sugar) =
{map_thms = map (Morphism.thm phi) map_thms,
map_disc_iffs = map (Morphism.thm phi) map_disc_iffs,
map_selss = map (map (Morphism.thm phi)) map_selss,
rel_injects = map (Morphism.thm phi) rel_injects,
rel_distincts = map (Morphism.thm phi) rel_distincts,
rel_sels = map (Morphism.thm phi) rel_sels,
rel_intros = map (Morphism.thm phi) rel_intros,
rel_cases = map (Morphism.thm phi) rel_cases,
pred_injects = map (Morphism.thm phi) pred_injects,
set_thms = map (Morphism.thm phi) set_thms,
set_selssss = map (map (map (map (Morphism.thm phi)))) set_selssss,
set_introssss = map (map (map (map (Morphism.thm phi)))) set_introssss,
set_cases = map (Morphism.thm phi) set_cases};
fun morph_fp_co_induct_sugar phi ({co_rec, common_co_inducts, co_inducts, co_rec_def, co_rec_thms,
co_rec_discs, co_rec_disc_iffs, co_rec_selss, co_rec_codes, co_rec_transfers, co_rec_o_maps,
common_rel_co_inducts, rel_co_inducts, common_set_inducts, set_inducts} : fp_co_induct_sugar) =
{co_rec = Morphism.term phi co_rec,
common_co_inducts = map (Morphism.thm phi) common_co_inducts,
co_inducts = map (Morphism.thm phi) co_inducts,
co_rec_def = Morphism.thm phi co_rec_def,
co_rec_thms = map (Morphism.thm phi) co_rec_thms,
co_rec_discs = map (Morphism.thm phi) co_rec_discs,
co_rec_disc_iffs = map (Morphism.thm phi) co_rec_disc_iffs,
co_rec_selss = map (map (Morphism.thm phi)) co_rec_selss,
co_rec_codes = map (Morphism.thm phi) co_rec_codes,
co_rec_transfers = map (Morphism.thm phi) co_rec_transfers,
co_rec_o_maps = map (Morphism.thm phi) co_rec_o_maps,
common_rel_co_inducts = map (Morphism.thm phi) common_rel_co_inducts,
rel_co_inducts = map (Morphism.thm phi) rel_co_inducts,
common_set_inducts = map (Morphism.thm phi) common_set_inducts,
set_inducts = map (Morphism.thm phi) set_inducts};
fun morph_fp_ctr_sugar phi ({ctrXs_Tss, ctor_iff_dtor, ctr_defs, ctr_sugar, ctr_transfers,
case_transfers, disc_transfers, sel_transfers} : fp_ctr_sugar) =
{ctrXs_Tss = map (map (Morphism.typ phi)) ctrXs_Tss,
ctor_iff_dtor = Morphism.thm phi ctor_iff_dtor,
ctr_defs = map (Morphism.thm phi) ctr_defs,
ctr_sugar = morph_ctr_sugar phi ctr_sugar,
ctr_transfers = map (Morphism.thm phi) ctr_transfers,
case_transfers = map (Morphism.thm phi) case_transfers,
disc_transfers = map (Morphism.thm phi) disc_transfers,
sel_transfers = map (Morphism.thm phi) sel_transfers};
fun morph_fp_sugar phi ({T, BT, X, fp, fp_res, fp_res_index, pre_bnf, fp_bnf, absT_info,
fp_nesting_bnfs, live_nesting_bnfs, fp_ctr_sugar, fp_bnf_sugar,
fp_co_induct_sugar} : fp_sugar) =
{T = Morphism.typ phi T,
BT = Morphism.typ phi BT,
X = Morphism.typ phi X,
fp = fp,
fp_res = morph_fp_result phi fp_res,
fp_res_index = fp_res_index,
pre_bnf = morph_bnf phi pre_bnf,
fp_bnf = morph_bnf phi fp_bnf,
absT_info = morph_absT_info phi absT_info,
fp_nesting_bnfs = map (morph_bnf phi) fp_nesting_bnfs,
live_nesting_bnfs = map (morph_bnf phi) live_nesting_bnfs,
fp_ctr_sugar = morph_fp_ctr_sugar phi fp_ctr_sugar,
fp_bnf_sugar = morph_fp_bnf_sugar phi fp_bnf_sugar,
fp_co_induct_sugar = morph_fp_co_induct_sugar phi fp_co_induct_sugar};
val transfer_fp_sugar = morph_fp_sugar o Morphism.transfer_morphism;
structure Data = Generic_Data
(
type T = fp_sugar Symtab.table;
val empty = Symtab.empty;
val extend = I;
fun merge data : T = Symtab.merge (K true) data;
);
fun fp_sugar_of_generic context =
Option.map (transfer_fp_sugar (Context.theory_of context)) o Symtab.lookup (Data.get context);
fun fp_sugars_of_generic context =
Symtab.fold (cons o transfer_fp_sugar (Context.theory_of context) o snd) (Data.get context) [];
val fp_sugar_of = fp_sugar_of_generic o Context.Proof;
val fp_sugar_of_global = fp_sugar_of_generic o Context.Theory;
val fp_sugars_of = fp_sugars_of_generic o Context.Proof;
val fp_sugars_of_global = fp_sugars_of_generic o Context.Theory;
structure FP_Sugar_Plugin = Plugin(type T = fp_sugar list);
fun fp_sugars_interpretation name f =
FP_Sugar_Plugin.interpretation name (fn fp_sugars => fn lthy =>
f (map (transfer_fp_sugar (Proof_Context.theory_of lthy)) fp_sugars) lthy);
val interpret_fp_sugars = FP_Sugar_Plugin.data;
val register_fp_sugars_raw =
fold (fn fp_sugar as {T = Type (s, _), ...} =>
Local_Theory.declaration {syntax = false, pervasive = true}
(fn phi => Data.map (Symtab.update (s, morph_fp_sugar phi fp_sugar))));
fun register_fp_sugars plugins fp_sugars =
register_fp_sugars_raw fp_sugars #> interpret_fp_sugars plugins fp_sugars;
fun interpret_bnfs_register_fp_sugars plugins Ts BTs Xs fp pre_bnfs absT_infos fp_nesting_bnfs
live_nesting_bnfs fp_res ctrXs_Tsss ctor_iff_dtors ctr_defss ctr_sugars co_recs co_rec_defs
map_thmss common_co_inducts co_inductss co_rec_thmss co_rec_discss co_rec_selsss rel_injectss
rel_distinctss map_disc_iffss map_selsss rel_selss rel_intross rel_casess pred_injectss
set_thmss set_selsssss set_introsssss set_casess ctr_transferss case_transferss disc_transferss
co_rec_disc_iffss co_rec_codess co_rec_transferss common_rel_co_inducts rel_co_inductss
common_set_inducts set_inductss sel_transferss co_rec_o_mapss noted =
let
val fp_sugars =
map_index (fn (kk, T) =>
{T = T, BT = nth BTs kk, X = nth Xs kk, fp = fp, fp_res = fp_res, fp_res_index = kk,
pre_bnf = nth pre_bnfs kk, absT_info = nth absT_infos kk,
fp_bnf = nth (#bnfs fp_res) kk,
fp_nesting_bnfs = fp_nesting_bnfs, live_nesting_bnfs = live_nesting_bnfs,
fp_ctr_sugar =
{ctrXs_Tss = nth ctrXs_Tsss kk,
ctor_iff_dtor = nth ctor_iff_dtors kk,
ctr_defs = nth ctr_defss kk,
ctr_sugar = nth ctr_sugars kk,
ctr_transfers = nth ctr_transferss kk,
case_transfers = nth case_transferss kk,
disc_transfers = nth disc_transferss kk,
sel_transfers = nth sel_transferss kk},
fp_bnf_sugar =
{map_thms = nth map_thmss kk,
map_disc_iffs = nth map_disc_iffss kk,
map_selss = nth map_selsss kk,
rel_injects = nth rel_injectss kk,
rel_distincts = nth rel_distinctss kk,
rel_sels = nth rel_selss kk,
rel_intros = nth rel_intross kk,
rel_cases = nth rel_casess kk,
pred_injects = nth pred_injectss kk,
set_thms = nth set_thmss kk,
set_selssss = nth set_selsssss kk,
set_introssss = nth set_introsssss kk,
set_cases = nth set_casess kk},
fp_co_induct_sugar =
{co_rec = nth co_recs kk,
common_co_inducts = common_co_inducts,
co_inducts = nth co_inductss kk,
co_rec_def = nth co_rec_defs kk,
co_rec_thms = nth co_rec_thmss kk,
co_rec_discs = nth co_rec_discss kk,
co_rec_disc_iffs = nth co_rec_disc_iffss kk,
co_rec_selss = nth co_rec_selsss kk,
co_rec_codes = nth co_rec_codess kk,
co_rec_transfers = nth co_rec_transferss kk,
co_rec_o_maps = nth co_rec_o_mapss kk,
common_rel_co_inducts = common_rel_co_inducts,
rel_co_inducts = nth rel_co_inductss kk,
common_set_inducts = common_set_inducts,
set_inducts = nth set_inductss kk}}
|> morph_fp_sugar (substitute_noted_thm noted)) Ts;
in
register_fp_sugars_raw fp_sugars
#> fold (interpret_bnf plugins) (#bnfs fp_res)
#> interpret_fp_sugars plugins fp_sugars
end;
fun quasi_unambiguous_case_names names =
let
val ps = map (`Long_Name.base_name) names;
val dups = Library.duplicates (op =) (map fst ps);
fun underscore s =
let val ss = Long_Name.explode s
in space_implode "_" (drop (length ss - 2) ss) end;
in
map (fn (base, full) => if member (op =) dups base then underscore full else base) ps
|> Name.variant_list []
end;
fun zipper_map f =
let
fun zed _ [] = []
| zed xs (y :: ys) = f (xs, y, ys) :: zed (xs @ [y]) ys;
in zed [] end;
fun cannot_merge_types fp =
error ("Mutually " ^ co_prefix fp ^ "recursive types must have the same type parameters");
fun merge_type_arg fp T T' = if T = T' then T else cannot_merge_types fp;
fun merge_type_args fp (As, As') =
if length As = length As' then map2 (merge_type_arg fp) As As' else cannot_merge_types fp;
fun type_args_named_constrained_of_spec (((((ncAs, _), _), _), _), _) = ncAs;
fun type_binding_of_spec (((((_, b), _), _), _), _) = b;
fun mixfix_of_spec ((((_, mx), _), _), _) = mx;
fun mixfixed_ctr_specs_of_spec (((_, mx_ctr_specs), _), _) = mx_ctr_specs;
fun map_binding_of_spec ((_, (b, _, _)), _) = b;
fun rel_binding_of_spec ((_, (_, b, _)), _) = b;
fun pred_binding_of_spec ((_, (_, _, b)), _) = b;
fun sel_default_eqs_of_spec (_, ts) = ts;
fun ctr_sugar_kind_of_fp_kind Least_FP = Datatype
| ctr_sugar_kind_of_fp_kind Greatest_FP = Codatatype;
fun uncurry_thm 0 thm = thm
| uncurry_thm 1 thm = thm
| uncurry_thm n thm = rotate_prems ~1 (uncurry_thm (n - 1) (rotate_prems 1 (conjI RS thm)));
fun choose_binary_fun fs AB =
find_first (fastype_of #> binder_types #> (fn [A, B] => AB = (A, B))) fs;
fun build_binary_fun_app fs t u =
Option.map (rapp u o rapp t) (choose_binary_fun fs (fastype_of t, fastype_of u));
fun build_the_rel ctxt Rs Ts A B =
build_rel [] ctxt Ts (the o choose_binary_fun Rs) (A, B);
fun build_rel_app ctxt Rs Ts t u =
build_the_rel ctxt Rs Ts (fastype_of t) (fastype_of u) $ t $ u;
fun mk_parametricity_goal ctxt Rs t u =
let val prem = build_the_rel ctxt Rs [] (fastype_of t) (fastype_of u) in
HOLogic.mk_Trueprop (prem $ t $ u)
end;
val name_of_set = name_of_const "set function" domain_type;
val fundefcong_attrs = @{attributes [fundef_cong]};
val nitpicksimp_attrs = @{attributes [nitpick_simp]};
val simp_attrs = @{attributes [simp]};
val lists_bmoc = fold (fn xs => fn t => Term.list_comb (t, xs));
fun flat_corec_predss_getterss qss gss = maps (op @) (qss ~~ gss);
fun flat_corec_preds_predsss_gettersss [] [qss] [gss] = flat_corec_predss_getterss qss gss
| flat_corec_preds_predsss_gettersss (p :: ps) (qss :: qsss) (gss :: gsss) =
p :: flat_corec_predss_getterss qss gss @ flat_corec_preds_predsss_gettersss ps qsss gsss;
fun mk_flip (x, Type (_, [T1, Type (_, [T2, T3])])) =
Abs ("x", T1, Abs ("y", T2, Var (x, T2 --> T1 --> T3) $ Bound 0 $ Bound 1));
fun flip_rels ctxt n thm =
let
val Rs = Term.add_vars (Thm.prop_of thm) [];
val Rs' = rev (drop (length Rs - n) Rs);
in
infer_instantiate ctxt (map (fn f => (fst f, Thm.cterm_of ctxt (mk_flip f))) Rs') thm
end;
fun mk_ctor_or_dtor get_T Ts t =
let val Type (_, Ts0) = get_T (fastype_of t) in
Term.subst_atomic_types (Ts0 ~~ Ts) t
end;
val mk_ctor = mk_ctor_or_dtor range_type;
val mk_dtor = mk_ctor_or_dtor domain_type;
fun mk_xtor_co_recs thy fp fpTs Cs ts0 =
let
val nn = length fpTs;
val (fpTs0, Cs0) =
map ((fp = Greatest_FP ? swap) o dest_funT o snd o strip_typeN nn o fastype_of) ts0
|> split_list;
val rho = tvar_subst thy (fpTs0 @ Cs0) (fpTs @ Cs);
in
map (Term.subst_TVars rho) ts0
end;
fun mk_set Ts t =
subst_nonatomic_types (snd (Term.dest_Type (domain_type (fastype_of t))) ~~ Ts) t;
fun liveness_of_fp_bnf n bnf =
(case T_of_bnf bnf of
Type (_, Ts) => map (not o member (op =) (deads_of_bnf bnf)) Ts
| _ => replicate n false);
fun add_nesting_bnf_names Us =
let
fun add (Type (s, Ts)) ss =
let val (needs, ss') = fold_map add Ts ss in
if exists I needs then (true, insert (op =) s ss') else (false, ss')
end
| add T ss = (member (op =) Us T, ss);
in snd oo add end;
fun nesting_bnfs ctxt ctr_Tsss Us =
map_filter (bnf_of ctxt) (fold (fold (fold (add_nesting_bnf_names Us))) ctr_Tsss []);
fun indexify proj xs f p = f (find_index (curry (op =) (proj p)) xs) p;
fun massage_simple_notes base =
filter_out (null o #2)
#> map (fn (thmN, thms, f_attrs) =>
((Binding.qualify true base (Binding.name thmN), []),
map_index (fn (i, thm) => ([thm], f_attrs i)) thms));
fun massage_multi_notes b_names Ts =
maps (fn (thmN, thmss, attrs) =>
@{map 3} (fn b_name => fn Type (T_name, _) => fn thms =>
((Binding.qualify true b_name (Binding.name thmN), attrs T_name), [(thms, [])]))
b_names Ts thmss)
#> filter_out (null o fst o hd o snd);
fun define_ctrs_dtrs_for_type fp_b_name fpT ctor dtor ctor_dtor dtor_ctor n ks abs ctr_bindings
ctr_mixfixes ctr_Tss lthy =
let
val ctr_absT = domain_type (fastype_of ctor);
val (((w, xss), u'), _) = lthy
|> yield_singleton (mk_Frees "w") ctr_absT
||>> mk_Freess "x" ctr_Tss
||>> yield_singleton Variable.variant_fixes fp_b_name;
val u = Free (u', fpT);
val ctor_iff_dtor_thm =
let
val goal =
fold_rev Logic.all [w, u]
(mk_Trueprop_eq (HOLogic.mk_eq (u, ctor $ w), HOLogic.mk_eq (dtor $ u, w)));
val vars = Variable.add_free_names lthy goal [];
in
Goal.prove_sorry lthy vars [] goal (fn {context = ctxt, ...} =>
mk_ctor_iff_dtor_tac ctxt (map (SOME o Thm.ctyp_of lthy) [ctr_absT, fpT])
(Thm.cterm_of lthy ctor) (Thm.cterm_of lthy dtor) ctor_dtor dtor_ctor)
|> Thm.close_derivation
end;
val ctr_rhss =
map2 (fn k => fn xs => fold_rev Term.lambda xs (ctor $ mk_absumprod ctr_absT abs n k xs))
ks xss;
val ((raw_ctrs, raw_ctr_defs), (lthy, lthy_old)) = lthy
|> Local_Theory.open_target |> snd
|> apfst split_list o @{fold_map 3} (fn b => fn mx => fn rhs =>
Local_Theory.define ((b, mx),
((Thm.make_def_binding (Config.get lthy bnf_internals) b, []), rhs))
#>> apsnd snd) ctr_bindings ctr_mixfixes ctr_rhss
||> `Local_Theory.close_target;
val phi = Proof_Context.export_morphism lthy_old lthy;
val ctr_defs = map (Morphism.thm phi) raw_ctr_defs;
val ctrs0 = map (Morphism.term phi) raw_ctrs;
in
((xss, ctrs0, ctor_iff_dtor_thm, ctr_defs), lthy)
end;
fun wrap_ctrs plugins fp discs_sels fp_b_name ctor_inject n ms abs_inject type_definition
disc_bindings sel_bindingss sel_default_eqs ctrs0 ctor_iff_dtor_thm ctr_defs lthy =
let
val sumEN_thm' = unfold_thms lthy @{thms unit_all_eq1} (mk_absumprodE type_definition ms);
fun exhaust_tac {context = ctxt, prems = _} =
mk_exhaust_tac ctxt n ctr_defs ctor_iff_dtor_thm sumEN_thm';
val inject_tacss =
map2 (fn ctr_def => fn 0 => [] | _ => [fn {context = ctxt, ...} =>
mk_inject_tac ctxt ctr_def ctor_inject abs_inject]) ctr_defs ms;
val half_distinct_tacss =
map (map (fn (def, def') => fn {context = ctxt, ...} =>
mk_half_distinct_tac ctxt ctor_inject abs_inject [def, def']))
(mk_half_pairss (`I ctr_defs));
val tacss = [exhaust_tac] :: inject_tacss @ half_distinct_tacss;
fun ctr_spec_of disc_b ctr0 sel_bs = ((disc_b, ctr0), sel_bs);
val ctr_specs = @{map 3} ctr_spec_of disc_bindings ctrs0 sel_bindingss;
val (ctr_sugar as {case_cong, ...}, lthy) =
free_constructors (ctr_sugar_kind_of_fp_kind fp) tacss
((((plugins, discs_sels), standard_binding), ctr_specs), sel_default_eqs) lthy
val anonymous_notes =
[([case_cong], fundefcong_attrs)]
|> map (fn (thms, attrs) => ((Binding.empty, attrs), [(thms, [])]));
val notes =
if Config.get lthy bnf_internals then
[(ctor_iff_dtorN, [ctor_iff_dtor_thm], K [])]
|> massage_simple_notes fp_b_name
else
[];
in
(ctr_sugar, lthy |> Local_Theory.notes (anonymous_notes @ notes) |> snd)
end;
fun derive_map_set_rel_pred_thms plugins fp live As Bs C E abs_inverses ctr_defs fp_nesting_set_maps
fp_nesting_rel_eq_onps live_nesting_map_id0s live_nesting_map_ident0s live_nesting_set_maps
live_nesting_rel_eqs live_nesting_rel_eq_onps fp_nested_rel_eq_onps fp_b_name fp_bnf fp_bnfs fpT
ctor ctor_dtor dtor_ctor pre_map_def pre_set_defs pre_rel_def fp_map_thm fp_set_thms fp_rel_thm
extra_unfolds_map extra_unfolds_set extra_unfolds_rel ctr_Tss abs
({casex, case_thms, discs, selss, sel_defs, ctrs, exhaust, exhaust_discs, disc_thmss, sel_thmss,
injects, distincts, distinct_discsss, ...} : ctr_sugar)
lthy =
let
val n = length ctr_Tss;
val ks = 1 upto n;
val ms = map length ctr_Tss;
val B_ify_T = Term.typ_subst_atomic (As ~~ Bs);
val B_ify = Term.map_types B_ify_T;
val fpBT = B_ify_T fpT;
val live_AsBs = filter (op <>) (As ~~ Bs);
val live_As = map fst live_AsBs;
val fTs = map (op -->) live_AsBs;
val ((((((((xss, yss), fs), Ps), Rs), ta), tb), thesis), names_lthy) = lthy
|> fold (fold Variable.declare_typ) [As, Bs]
|> mk_Freess "x" ctr_Tss
||>> mk_Freess "y" (map (map B_ify_T) ctr_Tss)
||>> mk_Frees "f" fTs
||>> mk_Frees "P" (map mk_pred1T live_As)
||>> mk_Frees "R" (map (uncurry mk_pred2T) live_AsBs)
||>> yield_singleton (mk_Frees "a") fpT
||>> yield_singleton (mk_Frees "b") fpBT
||>> apfst HOLogic.mk_Trueprop o yield_singleton (mk_Frees "thesis") HOLogic.boolT;
val ctrAs = map (mk_ctr As) ctrs;
val ctrBs = map (mk_ctr Bs) ctrs;
val ctr_defs' = map2 (fn m => fn def => mk_unabs_def m (def RS meta_eq_to_obj_eq)) ms ctr_defs;
val ABfs = live_AsBs ~~ fs;
fun derive_rel_case relAsBs rel_inject_thms rel_distinct_thms =
let
val rel_Rs_a_b = list_comb (relAsBs, Rs) $ ta $ tb;
fun mk_assms ctrA ctrB ctxt =
let
val argA_Ts = binder_types (fastype_of ctrA);
val argB_Ts = binder_types (fastype_of ctrB);
val ((argAs, argBs), names_ctxt) = ctxt
|> mk_Frees "x" argA_Ts
||>> mk_Frees "y" argB_Ts;
val ctrA_args = list_comb (ctrA, argAs);
val ctrB_args = list_comb (ctrB, argBs);
in
(fold_rev Logic.all (argAs @ argBs) (Logic.list_implies
(mk_Trueprop_eq (ta, ctrA_args) :: mk_Trueprop_eq (tb, ctrB_args) ::
map2 (HOLogic.mk_Trueprop oo build_rel_app lthy Rs []) argAs argBs,
thesis)),
names_ctxt)
end;
val (assms, names_lthy) = @{fold_map 2} mk_assms ctrAs ctrBs names_lthy;
val goal = Logic.list_implies (HOLogic.mk_Trueprop rel_Rs_a_b :: assms, thesis);
in
Goal.prove_sorry lthy [] [] goal (fn {context = ctxt, prems = _} =>
mk_rel_case_tac ctxt (Thm.cterm_of ctxt ta) (Thm.cterm_of ctxt tb) exhaust injects
rel_inject_thms distincts rel_distinct_thms live_nesting_rel_eqs)
|> singleton (Proof_Context.export names_lthy lthy)
|> Thm.close_derivation
end;
fun derive_case_transfer rel_case_thm =
let
val (S, names_lthy) = yield_singleton (mk_Frees "S") (mk_pred2T C E) names_lthy;
val caseA = mk_case As C casex;
val caseB = mk_case Bs E casex;
val goal = mk_parametricity_goal names_lthy (S :: Rs) caseA caseB;
in
Goal.prove_sorry lthy [] [] goal (fn {context = ctxt, prems = _} =>
mk_case_transfer_tac ctxt rel_case_thm case_thms)
|> singleton (Proof_Context.export names_lthy lthy)
|> Thm.close_derivation
end;
in
if live = 0 then
if plugins transfer_plugin then
let
val relAsBs = HOLogic.eq_const fpT;
val rel_case_thm = derive_rel_case relAsBs [] [];
val case_transfer_thm = derive_case_transfer rel_case_thm;
val notes =
[(case_transferN, [case_transfer_thm], K [])]
|> massage_simple_notes fp_b_name;
val (noted, lthy') = lthy
|> Local_Theory.notes notes;
val subst = Morphism.thm (substitute_noted_thm noted);
in
(([], [], [], [], [], [], [], [], [], [], [], [], [], [], [subst case_transfer_thm], [],
[]), lthy')
end
else
(([], [], [], [], [], [], [], [], [], [], [], [], [], [], [], [], []), lthy)
else
let
val mapx = mk_map live As Bs (map_of_bnf fp_bnf);
val relAsBs = mk_rel live As Bs (rel_of_bnf fp_bnf);
val setAs = map (mk_set As) (sets_of_bnf fp_bnf);
val discAs = map (mk_disc_or_sel As) discs;
val discBs = map (mk_disc_or_sel Bs) discs;
val selAss = map (map (mk_disc_or_sel As)) selss;
val selBss = map (map (mk_disc_or_sel Bs)) selss;
val ctor_cong =
if fp = Least_FP then
Drule.dummy_thm
else
let val ctor' = mk_ctor Bs ctor in
infer_instantiate' lthy [NONE, NONE, SOME (Thm.cterm_of lthy ctor')] arg_cong
end;
fun mk_cIn ctor k xs =
let val absT = domain_type (fastype_of ctor) in
mk_absumprod absT abs n k xs
|> fp = Greatest_FP ? curry (op $) ctor
|> Thm.cterm_of lthy
end;
val cxIns = map2 (mk_cIn ctor) ks xss;
fun mk_set0_thm fp_set_thm ctr_def' cxIn =
Local_Defs.fold lthy [ctr_def']
(unfold_thms lthy (pre_set_defs @ fp_nesting_set_maps @ live_nesting_set_maps @
(if fp = Least_FP then [] else [dtor_ctor]) @ basic_sumprod_thms_set @
@{thms UN_Un sup_assoc[THEN sym]} @ abs_inverses)
(infer_instantiate' lthy [SOME cxIn] fp_set_thm))
|> singleton (Proof_Context.export names_lthy lthy);
fun mk_set0_thms fp_set_thm = map2 (mk_set0_thm fp_set_thm) ctr_defs' cxIns;
val set0_thmss = map mk_set0_thms fp_set_thms;
val set0_thms = flat set0_thmss;
val set_thms = set0_thms
|> map (unfold_thms lthy @{thms insert_is_Un[THEN sym] Un_empty_left Un_insert_left});
val map_thms =
let
fun mk_goal ctrA ctrB xs ys =
let
val mapx = mk_map live As Bs (map_of_bnf fp_bnf);
val fmap = list_comb (mapx, fs);
fun mk_arg (x as Free (_, T)) (Free (_, U)) =
if T = U then x
else build_map lthy [] (the o AList.lookup (op =) ABfs) (T, U) $ x;
val xs' = map2 mk_arg xs ys;
in
mk_Trueprop_eq (fmap $ list_comb (ctrA, xs), list_comb (ctrB, xs'))
end;
val goals = @{map 4} mk_goal ctrAs ctrBs xss yss;
val goal = Logic.mk_conjunction_balanced goals;
val vars = Variable.add_free_names lthy goal [];
val fp_map_thm' =
if fp = Least_FP then fp_map_thm
else fp_map_thm RS ctor_cong RS (ctor_dtor RS sym RS trans);
in
Goal.prove_sorry lthy vars [] goal (fn {context = ctxt, prems = _} =>
mk_map_tac ctxt abs_inverses pre_map_def dtor_ctor fp_map_thm'
live_nesting_map_ident0s ctr_defs' extra_unfolds_map)
|> Thm.close_derivation
|> Conjunction.elim_balanced (length goals)
end;
val rel_inject_thms =
let
fun mk_goal ctrA ctrB xs ys =
let
val rel = mk_rel live As Bs (rel_of_bnf fp_bnf);
val Rrel = list_comb (rel, Rs);
val lhs = Rrel $ list_comb (ctrA, xs) $ list_comb (ctrB, ys);
val conjuncts = map2 (build_rel_app lthy Rs []) xs ys;
in
HOLogic.mk_Trueprop
(if null conjuncts then lhs
else HOLogic.mk_eq (lhs, Library.foldr1 HOLogic.mk_conj conjuncts))
end;
val goals = @{map 4} mk_goal ctrAs ctrBs xss yss;
val goal = Logic.mk_conjunction_balanced goals;
val vars = Variable.add_free_names lthy goal [];
in
Goal.prove_sorry lthy vars [] goal (fn {context = ctxt, prems = _} =>
mk_rel_tac ctxt abs_inverses pre_rel_def dtor_ctor fp_rel_thm live_nesting_rel_eqs
ctr_defs' extra_unfolds_rel)
|> Thm.close_derivation
|> Conjunction.elim_balanced (length goals)
end;
val half_rel_distinct_thmss =
let
fun mk_goal ((ctrA, xs), (ctrB, ys)) =
let
val rel = mk_rel live As Bs (rel_of_bnf fp_bnf);
val Rrel = list_comb (rel, Rs);
in
HOLogic.mk_Trueprop (HOLogic.mk_not
(Rrel $ list_comb (ctrA, xs) $ list_comb (ctrB, ys)))
end;
val rel_infos = (ctrAs ~~ xss, ctrBs ~~ yss);
val goalss = map (map mk_goal) (mk_half_pairss rel_infos);
val goals = flat goalss;
in
unflat goalss
(if null goals then []
else
let
val goal = Logic.mk_conjunction_balanced goals;
val vars = Variable.add_free_names lthy goal [];
in
Goal.prove_sorry lthy vars [] goal (fn {context = ctxt, prems = _} =>
mk_rel_tac ctxt abs_inverses pre_rel_def dtor_ctor fp_rel_thm
live_nesting_rel_eqs ctr_defs' extra_unfolds_rel)
|> Thm.close_derivation
|> Conjunction.elim_balanced (length goals)
end)
end;
val rel_flip = rel_flip_of_bnf fp_bnf;
fun mk_other_half_rel_distinct_thm thm =
flip_rels lthy live thm RS (rel_flip RS sym RS @{thm arg_cong[of _ _ Not]} RS iffD2);
val other_half_rel_distinct_thmss =
map (map mk_other_half_rel_distinct_thm) half_rel_distinct_thmss;
val (rel_distinct_thms, _) =
join_halves n half_rel_distinct_thmss other_half_rel_distinct_thmss;
fun mk_rel_intro_thm m thm =
uncurry_thm m (thm RS iffD2) handle THM _ => thm;
val rel_intro_thms = map2 mk_rel_intro_thm ms rel_inject_thms;
val rel_code_thms =
map (fn thm => thm RS @{thm eq_False[THEN iffD2]}) rel_distinct_thms @
map2 (fn thm => fn 0 => thm RS @{thm eq_True[THEN iffD2]} | _ => thm) rel_inject_thms ms;
val ctr_transfer_thms =
let
val goals = map2 (mk_parametricity_goal names_lthy Rs) ctrAs ctrBs;
val goal = Logic.mk_conjunction_balanced goals;
val vars = Variable.add_free_names lthy goal [];
in
Goal.prove_sorry lthy vars [] goal
(fn {context = ctxt, prems = _} =>
mk_ctr_transfer_tac ctxt rel_intro_thms live_nesting_rel_eqs)
|> Thm.close_derivation
|> Conjunction.elim_balanced (length goals)
end;
val (set_cases_thms, set_cases_attrss) =
let
fun mk_prems assms elem t ctxt =
(case fastype_of t of
Type (type_name, xs) =>
(case bnf_of ctxt type_name of
NONE => ([], ctxt)
| SOME bnf =>
apfst flat (fold_map (fn set => fn ctxt =>
let
val T = HOLogic.dest_setT (range_type (fastype_of set));
val new_var = not (T = fastype_of elem);
val (x, ctxt') =
if new_var then yield_singleton (mk_Frees "x") T ctxt else (elem, ctxt);
in
mk_prems (mk_Trueprop_mem (x, set $ t) :: assms) elem x ctxt'
|>> map (new_var ? Logic.all x)
end) (map (mk_set xs) (sets_of_bnf bnf)) ctxt))
| T => rpair ctxt
(if T = fastype_of elem then [fold (curry Logic.mk_implies) assms thesis]
else []));
in
split_list (map (fn set =>
let
val A = HOLogic.dest_setT (range_type (fastype_of set));
val (elem, names_lthy) = yield_singleton (mk_Frees "e") A names_lthy;
val premss =
map (fn ctr =>
let
val (args, names_lthy) =
mk_Frees "z" (binder_types (fastype_of ctr)) names_lthy;
in
flat (zipper_map (fn (prev_args, arg, next_args) =>
let
val (args_with_elem, args_without_elem) =
if fastype_of arg = A then
(prev_args @ [elem] @ next_args, prev_args @ next_args)
else
`I (prev_args @ [arg] @ next_args);
in
mk_prems [mk_Trueprop_eq (ta, Term.list_comb (ctr, args_with_elem))]
elem arg names_lthy
|> fst
|> map (fold_rev Logic.all args_without_elem)
end) args)
end) ctrAs;
val goal = Logic.mk_implies (mk_Trueprop_mem (elem, set $ ta), thesis);
val vars = Variable.add_free_names lthy goal [];
val thm =
Goal.prove_sorry lthy vars (flat premss) goal (fn {context = ctxt, prems} =>
mk_set_cases_tac ctxt (Thm.cterm_of ctxt ta) prems exhaust set_thms)
|> Thm.close_derivation
|> rotate_prems ~1;
val cases_set_attr =
Attrib.internal (K (Induct.cases_pred (name_of_set set)));
val ctr_names = quasi_unambiguous_case_names (flat
(map (uncurry mk_names o map_prod length name_of_ctr) (premss ~~ ctrAs)));
in
(* TODO: @{attributes [elim?]} *)
(thm, [Attrib.consumes 1, cases_set_attr, Attrib.case_names ctr_names])
end) setAs)
end;
val (set_intros_thmssss, set_intros_thms) =
let
fun mk_goals A setA ctr_args t ctxt =
(case fastype_of t of
Type (type_name, innerTs) =>
(case bnf_of ctxt type_name of
NONE => ([], ctxt)
| SOME bnf =>
apfst flat (fold_map (fn set => fn ctxt =>
let
val T = HOLogic.dest_setT (range_type (fastype_of set));
val (y, ctxt') = yield_singleton (mk_Frees "y") T ctxt;
val assm = mk_Trueprop_mem (y, set $ t);
in
apfst (map (Logic.mk_implies o pair assm)) (mk_goals A setA ctr_args y ctxt')
end) (map (mk_set innerTs) (sets_of_bnf bnf)) ctxt))
| T => (if T = A then [mk_Trueprop_mem (t, setA $ ctr_args)] else [], ctxt));
val (goalssss, _) =
fold_map (fn set =>
let val A = HOLogic.dest_setT (range_type (fastype_of set)) in
@{fold_map 2} (fn ctr => fn xs =>
fold_map (mk_goals A set (Term.list_comb (ctr, xs))) xs)
ctrAs xss
end) setAs lthy;
val goals = flat (flat (flat goalssss));
in
`(unflattt goalssss)
(if null goals then []
else
let
val goal = Logic.mk_conjunction_balanced goals;
val vars = Variable.add_free_names lthy goal [];
in
Goal.prove_sorry lthy vars [] goal
(fn {context = ctxt, prems = _} => mk_set_intros_tac ctxt set0_thms)
|> Thm.close_derivation
|> Conjunction.elim_balanced (length goals)
end)
end;
val rel_sel_thms =
let
val n = length discAs;
fun mk_conjunct n k discA selAs discB selBs =
(if k = n then [] else [HOLogic.mk_eq (discA $ ta, discB $ tb)]) @
(if null selAs then []
else
[Library.foldr HOLogic.mk_imp
(if n = 1 then [] else [discA $ ta, discB $ tb],
Library.foldr1 HOLogic.mk_conj (map2 (build_rel_app names_lthy Rs [])
(map (rapp ta) selAs) (map (rapp tb) selBs)))]);
val goals =
if n = 0 then
[]
else
[mk_Trueprop_eq (build_rel_app names_lthy Rs [] ta tb,
(case flat (@{map 5} (mk_conjunct n) (1 upto n) discAs selAss discBs selBss) of
[] => @{term True}
| conjuncts => Library.foldr1 HOLogic.mk_conj conjuncts))];
fun prove goal =
Variable.add_free_names lthy goal []
|> (fn vars => Goal.prove_sorry lthy vars [] goal (fn {context = ctxt, prems = _} =>
mk_rel_sel_tac ctxt (Thm.cterm_of ctxt ta) (Thm.cterm_of ctxt tb) exhaust
(flat disc_thmss) (flat sel_thmss) rel_inject_thms distincts rel_distinct_thms
live_nesting_rel_eqs))
|> Thm.close_derivation;
in
map prove goals
end;
val (rel_case_thm, rel_case_attrs) =
let
val thm = derive_rel_case relAsBs rel_inject_thms rel_distinct_thms;
val ctr_names = quasi_unambiguous_case_names (map name_of_ctr ctrAs);
in
(thm, [Attrib.case_names ctr_names, Attrib.consumes 1] @ @{attributes [cases pred]})
end;
val case_transfer_thm = derive_case_transfer rel_case_thm;
val sel_transfer_thms =
if null selAss then
[]
else
let
val shared_sels = foldl1 (uncurry (inter (op =))) (map (op ~~) (selAss ~~ selBss));
val goals = map (uncurry (mk_parametricity_goal names_lthy Rs)) shared_sels;
in
if null goals then
[]
else
let
val goal = Logic.mk_conjunction_balanced goals;
val vars = Variable.add_free_names lthy goal [];
in
Goal.prove_sorry lthy vars [] goal
(fn {context = ctxt, prems = _} =>
mk_sel_transfer_tac ctxt n sel_defs case_transfer_thm)
|> Thm.close_derivation
|> Conjunction.elim_balanced (length goals)
end
end;
val disc_transfer_thms =
let val goals = map2 (mk_parametricity_goal names_lthy Rs) discAs discBs in
if null goals then
[]
else
let
val goal = Logic.mk_conjunction_balanced goals;
val vars = Variable.add_free_names lthy goal [];
in
Goal.prove_sorry lthy vars [] goal
(fn {context = ctxt, prems = _} => mk_disc_transfer_tac ctxt
(the_single rel_sel_thms) (the_single exhaust_discs)
(flat (flat distinct_discsss)))
|> Thm.close_derivation
|> Conjunction.elim_balanced (length goals)
end
end;
val map_disc_iff_thms =
let
val discsB = map (mk_disc_or_sel Bs) discs;
val discsA_t = map (fn disc1 => Term.betapply (disc1, ta)) discAs;
fun mk_goal (discA_t, discB) =
if head_of discA_t aconv HOLogic.Not orelse is_refl_bool discA_t then
NONE
else
SOME (mk_Trueprop_eq (betapply (discB, (Term.list_comb (mapx, fs) $ ta)), discA_t));
val goals = map_filter mk_goal (discsA_t ~~ discsB);
in
if null goals then
[]
else
let
val goal = Logic.mk_conjunction_balanced goals;
val vars = Variable.add_free_names lthy goal [];
in
Goal.prove_sorry lthy vars [] goal
(fn {context = ctxt, prems = _} =>
mk_map_disc_iff_tac ctxt (Thm.cterm_of ctxt ta) exhaust (flat disc_thmss)
map_thms)
|> Thm.close_derivation
|> Conjunction.elim_balanced (length goals)
end
end;
val (map_sel_thmss, map_sel_thms) =
let
fun mk_goal discA selA selB =
let
val prem = Term.betapply (discA, ta);
val lhs = selB $ (Term.list_comb (mapx, fs) $ ta);
val lhsT = fastype_of lhs;
val map_rhsT =
map_atyps (perhaps (AList.lookup (op =) (map swap live_AsBs))) lhsT;
val map_rhs = build_map lthy []
(the o (AList.lookup (op =) (live_AsBs ~~ fs))) (map_rhsT, lhsT);
val rhs = (case map_rhs of
Const (@{const_name id}, _) => selA $ ta
| _ => map_rhs $ (selA $ ta));
val concl = mk_Trueprop_eq (lhs, rhs);
in
if is_refl_bool prem then concl
else Logic.mk_implies (HOLogic.mk_Trueprop prem, concl)
end;
val goalss = @{map 3} (map2 o mk_goal) discAs selAss selBss;
val goals = flat goalss;
in
`(unflat goalss)
(if null goals then []
else
let
val goal = Logic.mk_conjunction_balanced goals;
val vars = Variable.add_free_names lthy goal [];
in
Goal.prove_sorry lthy vars [] goal
(fn {context = ctxt, prems = _} =>
mk_map_sel_tac ctxt (Thm.cterm_of ctxt ta) exhaust (flat disc_thmss) map_thms
(flat sel_thmss) live_nesting_map_id0s)
|> Thm.close_derivation
|> Conjunction.elim_balanced (length goals)
end)
end;
val (set_sel_thmssss, set_sel_thms) =
let
fun mk_goal setA discA selA ctxt =
let
val prem = Term.betapply (discA, ta);
val sel_rangeT = range_type (fastype_of selA);
val A = HOLogic.dest_setT (range_type (fastype_of setA));
fun travese_nested_types t ctxt =
(case fastype_of t of
Type (type_name, innerTs) =>
(case bnf_of ctxt type_name of
NONE => ([], ctxt)
| SOME bnf =>
let
fun seq_assm a set ctxt =
let
val T = HOLogic.dest_setT (range_type (fastype_of set));
val (x, ctxt') = yield_singleton (mk_Frees "x") T ctxt;
val assm = mk_Trueprop_mem (x, set $ a);
in
travese_nested_types x ctxt'
|>> map (Logic.mk_implies o pair assm)
end;
in
fold_map (seq_assm t o mk_set innerTs) (sets_of_bnf bnf) ctxt
|>> flat
end)
| T =>
if T = A then ([mk_Trueprop_mem (t, setA $ ta)], ctxt) else ([], ctxt));
val (concls, ctxt') =
if sel_rangeT = A then ([mk_Trueprop_mem (selA $ ta, setA $ ta)], ctxt)
else travese_nested_types (selA $ ta) ctxt;
in
if exists_subtype_in [A] sel_rangeT then
if is_refl_bool prem then (concls, ctxt')
else (map (Logic.mk_implies o pair (HOLogic.mk_Trueprop prem)) concls, ctxt')
else
([], ctxt)
end;
val (goalssss, _) =
fold_map (fn set => @{fold_map 2} (fold_map o mk_goal set) discAs selAss)
setAs names_lthy;
val goals = flat (flat (flat goalssss));
in
`(unflattt goalssss)
(if null goals then []
else
let
val goal = Logic.mk_conjunction_balanced goals;
val vars = Variable.add_free_names lthy goal [];
in
Goal.prove_sorry lthy vars [] goal
(fn {context = ctxt, prems = _} =>
mk_set_sel_tac ctxt (Thm.cterm_of ctxt ta) exhaust (flat disc_thmss)
(flat sel_thmss) set0_thms)
|> Thm.close_derivation
|> Conjunction.elim_balanced (length goals)
end)
end;
val pred_injects =
let
fun top_sweep_rewr_conv rewrs =
Conv.top_sweep_conv (K (Conv.rewrs_conv rewrs)) @{context};
val rel_eq_onp_with_tops_of = Conv.fconv_rule (HOLogic.Trueprop_conv (Conv.arg1_conv
(top_sweep_rewr_conv @{thms eq_onp_top_eq_eq[symmetric, THEN eq_reflection]})));
val eq_onps = map rel_eq_onp_with_tops_of
(map rel_eq_onp_of_bnf fp_bnfs @ fp_nesting_rel_eq_onps @ live_nesting_rel_eq_onps @
fp_nested_rel_eq_onps);
val cTs = map (SOME o Thm.ctyp_of lthy) (maps (replicate 2) live_As);
val cts = map (SOME o Thm.cterm_of lthy) (map mk_eq_onp Ps);
val get_rhs = Thm.concl_of #> HOLogic.dest_Trueprop #> HOLogic.dest_eq #> snd;
val pred_eq_onp_conj =
List.foldr (fn (_, thm) => thm RS @{thm eq_onp_live_step}) @{thm refl[of True]};
fun predify_rel_inject rel_inject =
let
val conjuncts = try (get_rhs #> HOLogic.dest_conj) rel_inject |> the_default [];
fun postproc thm =
if null conjuncts then
thm RS (@{thm eq_onp_same_args} RS iffD1)
else
@{thm box_equals} OF [thm, @{thm eq_onp_same_args},
pred_eq_onp_conj conjuncts |> unfold_thms lthy @{thms simp_thms(21)}];
in
rel_inject
|> Thm.instantiate' cTs cts
|> Conv.fconv_rule (HOLogic.Trueprop_conv (Conv.arg_conv
(Raw_Simplifier.rewrite lthy false
@{thms eq_onp_top_eq_eq[symmetric, THEN eq_reflection]})))
|> unfold_thms lthy eq_onps
|> postproc
|> unfold_thms lthy @{thms top_conj}
end;
in
rel_inject_thms
|> map (unfold_thms lthy [@{thm conj_assoc}])
|> map predify_rel_inject
|> Proof_Context.export names_lthy lthy
end;
val code_attrs =
if plugins code_plugin then [Code.add_default_eqn_attrib Code.Equation] else [];
val anonymous_notes =
[(rel_code_thms, code_attrs @ nitpicksimp_attrs)]
|> map (fn (thms, attrs) => ((Binding.empty, attrs), [(thms, [])]));
val notes =
[(case_transferN, [case_transfer_thm], K []),
(ctr_transferN, ctr_transfer_thms, K []),
(disc_transferN, disc_transfer_thms, K []),
(sel_transferN, sel_transfer_thms, K []),
(mapN, map_thms, K (code_attrs @ nitpicksimp_attrs @ simp_attrs)),
(map_disc_iffN, map_disc_iff_thms, K simp_attrs),
(map_selN, map_sel_thms, K []),
(pred_injectN, pred_injects, K simp_attrs),
(rel_casesN, [rel_case_thm], K rel_case_attrs),
(rel_distinctN, rel_distinct_thms, K simp_attrs),
(rel_injectN, rel_inject_thms, K simp_attrs),
(rel_introsN, rel_intro_thms, K []),
(rel_selN, rel_sel_thms, K []),
(setN, set_thms, K (code_attrs @ case_fp fp nitpicksimp_attrs [] @ simp_attrs)),
(set_casesN, set_cases_thms, nth set_cases_attrss),
(set_introsN, set_intros_thms, K []),
(set_selN, set_sel_thms, K [])]
|> massage_simple_notes fp_b_name;
val (noted, lthy') = lthy
|> Spec_Rules.add Spec_Rules.Equational (`(single o lhs_head_of o hd) map_thms)
|> fp = Least_FP
? Spec_Rules.add Spec_Rules.Equational (`(single o lhs_head_of o hd) rel_code_thms)
|> Spec_Rules.add Spec_Rules.Equational (`(single o lhs_head_of o hd) set0_thms)
|> Local_Theory.notes (anonymous_notes @ notes);
val subst = Morphism.thm (substitute_noted_thm noted);
in
((map subst map_thms,
map subst map_disc_iff_thms,
map (map subst) map_sel_thmss,
map subst rel_inject_thms,
map subst rel_distinct_thms,
map subst rel_sel_thms,
map subst rel_intro_thms,
[subst rel_case_thm],
map subst pred_injects,
map subst set_thms,
map (map (map (map subst))) set_sel_thmssss,
map (map (map (map subst))) set_intros_thmssss,
map subst set_cases_thms,
map subst ctr_transfer_thms,
[subst case_transfer_thm],
map subst disc_transfer_thms,
map subst sel_transfer_thms), lthy')
end
end;
type lfp_sugar_thms = (thm list * thm * Token.src list) * (thm list list * Token.src list);
fun morph_lfp_sugar_thms phi ((inducts, induct, induct_attrs), (recss, rec_attrs)) =
((map (Morphism.thm phi) inducts, Morphism.thm phi induct, induct_attrs),
(map (map (Morphism.thm phi)) recss, rec_attrs)) : lfp_sugar_thms;
val transfer_lfp_sugar_thms = morph_lfp_sugar_thms o Morphism.transfer_morphism;
type gfp_sugar_thms =
((thm list * thm) list * (Token.src list * Token.src list))
* thm list list
* thm list list
* (thm list list * Token.src list)
* (thm list list list * Token.src list);
fun morph_gfp_sugar_thms phi ((coinducts_pairs, coinduct_attrs_pair),
corecss, corec_discss, (corec_disc_iffss, corec_disc_iff_attrs),
(corec_selsss, corec_sel_attrs)) =
((map (apfst (map (Morphism.thm phi)) o apsnd (Morphism.thm phi)) coinducts_pairs,
coinduct_attrs_pair),
map (map (Morphism.thm phi)) corecss,
map (map (Morphism.thm phi)) corec_discss,
(map (map (Morphism.thm phi)) corec_disc_iffss, corec_disc_iff_attrs),
(map (map (map (Morphism.thm phi))) corec_selsss, corec_sel_attrs)) : gfp_sugar_thms;
val transfer_gfp_sugar_thms = morph_gfp_sugar_thms o Morphism.transfer_morphism;
fun unzip_recT (Type (@{type_name prod}, [_, TFree x]))
(T as Type (@{type_name prod}, Ts as [_, TFree y])) =
if x = y then [T] else Ts
| unzip_recT _ (Type (@{type_name prod}, Ts as [_, TFree _])) = Ts
| unzip_recT _ T = [T];
fun mk_recs_args_types ctxt ctr_Tsss Cs absTs repTs ns mss ctor_rec_fun_Ts =
let
val Css = map2 replicate ns Cs;
val x_Tssss =
@{map 6} (fn absT => fn repT => fn n => fn ms => fn ctr_Tss => fn ctor_rec_fun_T =>
map2 (map2 unzip_recT)
ctr_Tss (dest_absumprodT absT repT n ms (domain_type ctor_rec_fun_T)))
absTs repTs ns mss ctr_Tsss ctor_rec_fun_Ts;
val x_Tsss' = map (map flat_rec_arg_args) x_Tssss;
val f_Tss = map2 (map2 (curry (op --->))) x_Tsss' Css;
val ((fss, xssss), _) = ctxt
|> mk_Freess "f" f_Tss
||>> mk_Freessss "x" x_Tssss;
in
(f_Tss, x_Tssss, fss, xssss)
end;
fun unzip_corecT (Type (@{type_name sum}, _)) T = [T]
| unzip_corecT _ (Type (@{type_name sum}, Ts)) = Ts
| unzip_corecT _ T = [T];
(*avoid "'a itself" arguments in corecursors*)
fun repair_nullary_single_ctr [[]] = [[HOLogic.unitT]]
| repair_nullary_single_ctr Tss = Tss;
fun mk_corec_fun_arg_types0 ctr_Tsss Cs absTs repTs ns mss fun_Ts =
let
val ctr_Tsss' = map repair_nullary_single_ctr ctr_Tsss;
val g_absTs = map range_type fun_Ts;
val g_Tsss =
map repair_nullary_single_ctr (@{map 5} dest_absumprodT absTs repTs ns mss g_absTs);
val g_Tssss = @{map 3} (fn C => map2 (map2 (map (curry (op -->) C) oo unzip_corecT)))
Cs ctr_Tsss' g_Tsss;
val q_Tssss = map (map (map (fn [_] => [] | [_, T] => [mk_pred1T (domain_type T)]))) g_Tssss;
in
(q_Tssss, g_Tsss, g_Tssss, g_absTs)
end;
fun mk_corec_p_pred_types Cs ns = map2 (fn n => replicate (Int.max (0, n - 1)) o mk_pred1T) ns Cs;
fun mk_corec_fun_arg_types ctr_Tsss Cs absTs repTs ns mss dtor_corec =
(mk_corec_p_pred_types Cs ns,
mk_corec_fun_arg_types0 ctr_Tsss Cs absTs repTs ns mss
(binder_fun_types (fastype_of dtor_corec)));
fun mk_corecs_args_types ctxt ctr_Tsss Cs absTs repTs ns mss dtor_corec_fun_Ts =
let
val p_Tss = mk_corec_p_pred_types Cs ns;
val (q_Tssss, g_Tsss, g_Tssss, corec_types) =
mk_corec_fun_arg_types0 ctr_Tsss Cs absTs repTs ns mss dtor_corec_fun_Ts;
val (((((Free (x, _), cs), pss), qssss), gssss), _) = ctxt
|> yield_singleton (mk_Frees "x") dummyT
||>> mk_Frees "a" Cs
||>> mk_Freess "p" p_Tss
||>> mk_Freessss "q" q_Tssss
||>> mk_Freessss "g" g_Tssss;
val cpss = map2 (map o rapp) cs pss;
fun build_sum_inj mk_inj = build_map ctxt [] (uncurry mk_inj o dest_sumT o snd);
fun build_dtor_corec_arg _ [] [cg] = cg
| build_dtor_corec_arg T [cq] [cg, cg'] =
mk_If cq (build_sum_inj Inl_const (fastype_of cg, T) $ cg)
(build_sum_inj Inr_const (fastype_of cg', T) $ cg');
val pgss = @{map 3} flat_corec_preds_predsss_gettersss pss qssss gssss;
val cqssss = map2 (map o map o map o rapp) cs qssss;
val cgssss = map2 (map o map o map o rapp) cs gssss;
val cqgsss = @{map 3} (@{map 3} (@{map 3} build_dtor_corec_arg)) g_Tsss cqssss cgssss;
in
(x, cs, cpss, (((pgss, pss, qssss, gssss), cqgsss), corec_types))
end;
fun mk_co_recs_prelims ctxt fp ctr_Tsss fpTs Cs absTs repTs ns mss xtor_co_recs0 =
let
val thy = Proof_Context.theory_of ctxt;
val (xtor_co_rec_fun_Ts, xtor_co_recs) =
mk_xtor_co_recs thy fp fpTs Cs xtor_co_recs0 |> `(binder_fun_types o fastype_of o hd);
val (recs_args_types, corecs_args_types) =
if fp = Least_FP then
mk_recs_args_types ctxt ctr_Tsss Cs absTs repTs ns mss xtor_co_rec_fun_Ts
|> (rpair NONE o SOME)
else
mk_corecs_args_types ctxt ctr_Tsss Cs absTs repTs ns mss xtor_co_rec_fun_Ts
|> (pair NONE o SOME);
in
(xtor_co_recs, recs_args_types, corecs_args_types)
end;
fun mk_preds_getterss_join c cps absT abs cqgss =
let
val n = length cqgss;
val ts = map2 (mk_absumprod absT abs n) (1 upto n) cqgss;
in
Term.lambda c (mk_IfN absT cps ts)
end;
fun define_co_rec_as fp Cs fpT b rhs lthy0 =
let
val thy = Proof_Context.theory_of lthy0;
val ((cst, (_, def)), (lthy', lthy)) = lthy0
|> Local_Theory.open_target |> snd
|> Local_Theory.define
((b, NoSyn), ((Thm.make_def_binding (Config.get lthy0 bnf_internals) b, []), rhs))
||> `Local_Theory.close_target;
val phi = Proof_Context.export_morphism lthy lthy';
val cst' = mk_co_rec thy fp Cs fpT (Morphism.term phi cst);
val def' = Morphism.thm phi def;
in
((cst', def'), lthy')
end;
fun define_rec (_, _, fss, xssss) mk_binding fpTs Cs reps ctor_rec =
let
val nn = length fpTs;
val (ctor_rec_absTs, fpT) = strip_typeN nn (fastype_of ctor_rec)
|>> map domain_type ||> domain_type;
in
define_co_rec_as Least_FP Cs fpT (mk_binding recN)
(fold_rev (fold_rev Term.lambda) fss (Term.list_comb (ctor_rec,
@{map 4} (fn ctor_rec_absT => fn rep => fn fs => fn xsss =>
mk_case_absumprod ctor_rec_absT rep fs (map (map HOLogic.mk_tuple) xsss)
(map flat_rec_arg_args xsss))
ctor_rec_absTs reps fss xssss)))
end;
fun define_corec (_, cs, cpss, (((pgss, _, _, _), cqgsss), f_absTs)) mk_binding fpTs Cs abss
dtor_corec =
let
val nn = length fpTs;
val fpT = range_type (snd (strip_typeN nn (fastype_of dtor_corec)));
in
define_co_rec_as Greatest_FP Cs fpT (mk_binding corecN)
(fold_rev (fold_rev Term.lambda) pgss (Term.list_comb (dtor_corec,
@{map 5} mk_preds_getterss_join cs cpss f_absTs abss cqgsss)))
end;
fun postproc_co_induct ctxt nn prop prop_conj =
Drule.zero_var_indexes
#> `(conj_dests nn)
#>> map (fn thm => Thm.permute_prems 0 ~1 (thm RS prop))
##> (fn thm => Thm.permute_prems 0 (~ nn)
(if nn = 1 then thm RS prop
else funpow nn (fn thm => unfold_thms ctxt @{thms conj_assoc} (thm RS prop_conj)) thm));
fun mk_induct_attrs ctrss =
let val induct_cases = quasi_unambiguous_case_names (maps (map name_of_ctr) ctrss);
in [Attrib.case_names induct_cases] end;
fun derive_rel_induct_thms_for_types lthy nn fpA_Ts As Bs ctrAss ctrAs_Tsss exhausts ctor_rel_induct
ctor_defss ctor_injects pre_rel_defs abs_inverses live_nesting_rel_eqs =
let
val B_ify_T = Term.typ_subst_atomic (As ~~ Bs);
val B_ify = Term.map_types B_ify_T;
val fpB_Ts = map B_ify_T fpA_Ts;
val ctrBs_Tsss = map (map (map B_ify_T)) ctrAs_Tsss;
val ctrBss = map (map B_ify) ctrAss;
val ((((Rs, IRs), ctrAsss), ctrBsss), names_lthy) = lthy
|> mk_Frees "R" (map2 mk_pred2T As Bs)
||>> mk_Frees "IR" (map2 mk_pred2T fpA_Ts fpB_Ts)
||>> mk_Freesss "a" ctrAs_Tsss
||>> mk_Freesss "b" ctrBs_Tsss;
val prems =
let
fun mk_prem ctrA ctrB argAs argBs =
fold_rev Logic.all (argAs @ argBs) (fold_rev (curry Logic.mk_implies)
(map2 (HOLogic.mk_Trueprop oo build_rel_app names_lthy (Rs @ IRs) fpA_Ts) argAs argBs)
(HOLogic.mk_Trueprop (build_rel_app names_lthy (Rs @ IRs) fpA_Ts
(Term.list_comb (ctrA, argAs)) (Term.list_comb (ctrB, argBs)))));
in
flat (@{map 4} (@{map 4} mk_prem) ctrAss ctrBss ctrAsss ctrBsss)
end;
val goal = HOLogic.mk_Trueprop (Library.foldr1 HOLogic.mk_conj (map2 mk_leq
(map2 (build_the_rel lthy (Rs @ IRs) []) fpA_Ts fpB_Ts) IRs));
val vars = Variable.add_free_names lthy goal [];
val rel_induct0_thm =
Goal.prove_sorry lthy vars prems goal (fn {context = ctxt, prems} =>
mk_rel_induct0_tac ctxt ctor_rel_induct prems (map (Thm.cterm_of ctxt) IRs) exhausts
ctor_defss ctor_injects pre_rel_defs abs_inverses live_nesting_rel_eqs)
|> Thm.close_derivation;
in
(postproc_co_induct lthy nn @{thm predicate2D} @{thm predicate2D_conj} rel_induct0_thm,
mk_induct_attrs ctrAss)
end;
fun derive_induct_recs_thms_for_types plugins pre_bnfs rec_args_typess ctor_induct ctor_rec_thms
live_nesting_bnfs fp_nesting_bnfs fpTs Cs Xs ctrXs_Tsss fp_abs_inverses fp_type_definitions
abs_inverses ctrss ctr_defss recs rec_defs lthy =
let
val ctr_Tsss = map (map (binder_types o fastype_of)) ctrss;
val nn = length pre_bnfs;
val ns = map length ctr_Tsss;
val mss = map (map length) ctr_Tsss;
val pre_map_defs = map map_def_of_bnf pre_bnfs;
val pre_set_defss = map set_defs_of_bnf pre_bnfs;
val live_nesting_map_ident0s = map map_ident0_of_bnf live_nesting_bnfs;
val fp_nesting_map_ident0s = map map_ident0_of_bnf fp_nesting_bnfs;
val fp_nesting_set_maps = maps set_map_of_bnf fp_nesting_bnfs;
val fp_b_names = map base_name_of_typ fpTs;
val ((((ps, ps'), xsss), us'), names_lthy) = lthy
|> mk_Frees' "P" (map mk_pred1T fpTs)
||>> mk_Freesss "x" ctr_Tsss
||>> Variable.variant_fixes fp_b_names;
val us = map2 (curry Free) us' fpTs;
fun mk_sets bnf =
let
val Type (T_name, Us) = T_of_bnf bnf;
val lives = lives_of_bnf bnf;
val sets = sets_of_bnf bnf;
fun mk_set U =
(case find_index (curry (op =) U) lives of
~1 => Term.dummy
| i => nth sets i);
in
(T_name, map mk_set Us)
end;
val setss_fp_nesting = map mk_sets fp_nesting_bnfs;
val (induct_thms, induct_thm) =
let
fun mk_raw_prem_prems _ (x as Free (_, Type _)) (X as TFree _) =
[([], (find_index (curry (op =) X) Xs + 1, x))]
| mk_raw_prem_prems names_lthy (x as Free (s, Type (T_name, Ts0))) (Type (_, Xs_Ts0)) =
(case AList.lookup (op =) setss_fp_nesting T_name of
NONE => []
| SOME raw_sets0 =>
let
val (Xs_Ts, (Ts, raw_sets)) =
filter (exists_subtype_in Xs o fst) (Xs_Ts0 ~~ (Ts0 ~~ raw_sets0))
|> split_list ||> split_list;
val sets = map (mk_set Ts0) raw_sets;
val (ys, names_lthy') = names_lthy |> mk_Frees s Ts;
val xysets = map (pair x) (ys ~~ sets);
val ppremss = map2 (mk_raw_prem_prems names_lthy') ys Xs_Ts;
in
flat (map2 (map o apfst o cons) xysets ppremss)
end)
| mk_raw_prem_prems _ _ _ = [];
fun close_prem_prem xs t =
fold_rev Logic.all (map Free (drop (nn + length xs)
(rev (Term.add_frees t (map dest_Free xs @ ps'))))) t;
fun mk_prem_prem xs (xysets, (j, x)) =
close_prem_prem xs (Logic.list_implies (map (fn (x', (y, set)) =>
mk_Trueprop_mem (y, set $ x')) xysets,
HOLogic.mk_Trueprop (nth ps (j - 1) $ x)));
fun mk_raw_prem phi ctr ctr_Ts ctrXs_Ts =
let
val (xs, names_lthy') = names_lthy |> mk_Frees "x" ctr_Ts;
val pprems = flat (map2 (mk_raw_prem_prems names_lthy') xs ctrXs_Ts);
in (xs, pprems, HOLogic.mk_Trueprop (phi $ Term.list_comb (ctr, xs))) end;
fun mk_prem (xs, raw_pprems, concl) =
fold_rev Logic.all xs (Logic.list_implies (map (mk_prem_prem xs) raw_pprems, concl));
val raw_premss = @{map 4} (@{map 3} o mk_raw_prem) ps ctrss ctr_Tsss ctrXs_Tsss;
val goal =
Library.foldr (Logic.list_implies o apfst (map mk_prem)) (raw_premss,
HOLogic.mk_Trueprop (Library.foldr1 HOLogic.mk_conj (map2 (curry (op $)) ps us)));
val vars = Variable.add_free_names lthy goal [];
val kksss = map (map (map (fst o snd) o #2)) raw_premss;
val ctor_induct' = ctor_induct OF (map2 mk_absumprodE fp_type_definitions mss);
val thm =
Goal.prove_sorry lthy vars [] goal (fn {context = ctxt, ...} =>
mk_induct_tac ctxt nn ns mss kksss (flat ctr_defss) ctor_induct' fp_abs_inverses
abs_inverses fp_nesting_set_maps pre_set_defss)
|> Thm.close_derivation;
in
`(conj_dests nn) thm
end;
val xctrss = map2 (map2 (curry Term.list_comb)) ctrss xsss;
fun mk_rec_thmss (_, x_Tssss, fss, _) recs rec_defs ctor_rec_thms =
let
val frecs = map (lists_bmoc fss) recs;
fun mk_goal frec xctr f xs fxs =
fold_rev (fold_rev Logic.all) (xs :: fss)
(mk_Trueprop_eq (frec $ xctr, Term.list_comb (f, fxs)));
fun maybe_tick (T, U) u f =
if try (fst o HOLogic.dest_prodT) U = SOME T then
Term.lambda u (HOLogic.mk_prod (u, f $ u))
else
f;
fun build_rec (x as Free (_, T)) U =
if T = U then
x
else
let
val build_simple =
indexify (perhaps (try (snd o HOLogic.dest_prodT)) o snd) Cs
(fn kk => fn TU => maybe_tick TU (nth us kk) (nth frecs kk));
in
build_map lthy [] build_simple (T, U) $ x
end;
val fxsss = map2 (map2 (flat_rec_arg_args oo map2 (map o build_rec))) xsss x_Tssss;
val goalss = @{map 5} (@{map 4} o mk_goal) frecs xctrss fss xsss fxsss;
val tacss = @{map 4} (map ooo
mk_rec_tac pre_map_defs (fp_nesting_map_ident0s @ live_nesting_map_ident0s) rec_defs)
ctor_rec_thms fp_abs_inverses abs_inverses ctr_defss;
fun prove goal tac =
Goal.prove_sorry lthy [] [] goal (tac o #context)
|> Thm.close_derivation;
in
map2 (map2 prove) goalss tacss
end;
val rec_thmss = mk_rec_thmss (the rec_args_typess) recs rec_defs ctor_rec_thms;
val code_attrs =
if plugins code_plugin then [Code.add_default_eqn_attrib Code.Equation] else [];
in
((induct_thms, induct_thm, mk_induct_attrs ctrss),
(rec_thmss, code_attrs @ nitpicksimp_attrs @ simp_attrs))
end;
fun mk_coinduct_attrs fpTs ctrss discss mss =
let
val fp_b_names = map base_name_of_typ fpTs;
fun mk_coinduct_concls ms discs ctrs =
let
fun mk_disc_concl disc = [name_of_disc disc];
fun mk_ctr_concl 0 _ = []
| mk_ctr_concl _ ctr = [name_of_ctr ctr];
val disc_concls = map mk_disc_concl (fst (split_last discs)) @ [[]];
val ctr_concls = map2 mk_ctr_concl ms ctrs;
in
flat (map2 append disc_concls ctr_concls)
end;
val coinduct_cases = quasi_unambiguous_case_names (map (prefix Eq_prefix) fp_b_names);
val coinduct_conclss =
@{map 3} (quasi_unambiguous_case_names ooo mk_coinduct_concls) mss discss ctrss;
val coinduct_case_names_attr = Attrib.case_names coinduct_cases;
val coinduct_case_concl_attrs =
map2 (fn casex => fn concls => Attrib.case_conclusion (casex, concls))
coinduct_cases coinduct_conclss;
val common_coinduct_attrs = coinduct_case_names_attr :: coinduct_case_concl_attrs;
val coinduct_attrs = Attrib.consumes 1 :: coinduct_case_names_attr :: coinduct_case_concl_attrs;
in
(coinduct_attrs, common_coinduct_attrs)
end;
fun derive_rel_coinduct_thms_for_types lthy nn fpA_Ts ns As Bs mss (ctr_sugars : ctr_sugar list)
abs_inverses abs_injects ctor_injects dtor_ctors rel_pre_defs ctor_defss dtor_rel_coinduct
live_nesting_rel_eqs =
let
val B_ify_T = Term.typ_subst_atomic (As ~~ Bs);
val fpB_Ts = map B_ify_T fpA_Ts;
val (Rs, IRs, fpAs, fpBs, _) =
let
val fp_names = map base_name_of_typ fpA_Ts;
val ((((Rs, IRs), fpAs_names), fpBs_names), names_lthy) = lthy
|> mk_Frees "R" (map2 mk_pred2T As Bs)
||>> mk_Frees "IR" (map2 mk_pred2T fpA_Ts fpB_Ts)
||>> Variable.variant_fixes fp_names
||>> Variable.variant_fixes (map (suffix "'") fp_names);
in
(Rs, IRs, map2 (curry Free) fpAs_names fpA_Ts, map2 (curry Free) fpBs_names fpB_Ts,
names_lthy)
end;
val ((discA_tss, selA_tsss), (discB_tss, selB_tsss)) =
let
val discss = map #discs ctr_sugars;
val selsss = map #selss ctr_sugars;
fun mk_discss ts Ts = map2 (map o rapp) ts (map (map (mk_disc_or_sel Ts)) discss);
fun mk_selsss ts Ts =
map2 (map o map o rapp) ts (map (map (map (mk_disc_or_sel Ts))) selsss);
in
((mk_discss fpAs As, mk_selsss fpAs As),
(mk_discss fpBs Bs, mk_selsss fpBs Bs))
end;
val prems =
let
fun mk_prem_ctr_concls n k discA_t selA_ts discB_t selB_ts =
(if k = n then [] else [HOLogic.mk_eq (discA_t, discB_t)]) @
(case (selA_ts, selB_ts) of
([], []) => []
| (_ :: _, _ :: _) =>
[Library.foldr HOLogic.mk_imp
(if n = 1 then [] else [discA_t, discB_t],
Library.foldr1 HOLogic.mk_conj
(map2 (build_rel_app lthy (Rs @ IRs) fpA_Ts) selA_ts selB_ts))]);
fun mk_prem_concl n discA_ts selA_tss discB_ts selB_tss =
Library.foldr1 HOLogic.mk_conj (flat (@{map 5} (mk_prem_ctr_concls n)
(1 upto n) discA_ts selA_tss discB_ts selB_tss))
handle List.Empty => @{term True};
fun mk_prem IR tA tB n discA_ts selA_tss discB_ts selB_tss =
fold_rev Logic.all [tA, tB] (Logic.mk_implies (HOLogic.mk_Trueprop (IR $ tA $ tB),
HOLogic.mk_Trueprop (mk_prem_concl n discA_ts selA_tss discB_ts selB_tss)));
in
@{map 8} mk_prem IRs fpAs fpBs ns discA_tss selA_tsss discB_tss selB_tsss
end;
val goal = HOLogic.mk_Trueprop (Library.foldr1 HOLogic.mk_conj (map2 mk_leq
IRs (map2 (build_the_rel lthy (Rs @ IRs) []) fpA_Ts fpB_Ts)));
val vars = Variable.add_free_names lthy goal [];
val rel_coinduct0_thm =
Goal.prove_sorry lthy vars prems goal (fn {context = ctxt, prems} =>
mk_rel_coinduct0_tac ctxt dtor_rel_coinduct (map (Thm.cterm_of ctxt) IRs) prems
(map #exhaust ctr_sugars) (map (flat o #disc_thmss) ctr_sugars)
(map (flat o #sel_thmss) ctr_sugars) ctor_defss dtor_ctors ctor_injects abs_injects
rel_pre_defs abs_inverses live_nesting_rel_eqs)
|> Thm.close_derivation;
in
(postproc_co_induct lthy nn @{thm predicate2D} @{thm predicate2D_conj} rel_coinduct0_thm,
mk_coinduct_attrs fpA_Ts (map #ctrs ctr_sugars) (map #discs ctr_sugars) mss)
end;
fun derive_set_induct_thms_for_types lthy nn fpTs ctrss setss dtor_set_inducts exhausts set_pre_defs
ctor_defs dtor_ctors Abs_pre_inverses =
let
fun mk_prems A Ps ctr_args t ctxt =
(case fastype_of t of
Type (type_name, innerTs) =>
(case bnf_of ctxt type_name of
NONE => ([], ctxt)
| SOME bnf =>
let
fun seq_assm a set ctxt =
let
val X = HOLogic.dest_setT (range_type (fastype_of set));
val (x, ctxt') = yield_singleton (mk_Frees "x") X ctxt;
val assm = mk_Trueprop_mem (x, set $ a);
in
(case build_binary_fun_app Ps x a of
NONE =>
mk_prems A Ps ctr_args x ctxt'
|>> map (Logic.all x o Logic.mk_implies o pair assm)
| SOME f =>
([Logic.all x
(Logic.mk_implies (assm,
Logic.mk_implies (HOLogic.mk_Trueprop f,
HOLogic.mk_Trueprop (the (build_binary_fun_app Ps x ctr_args)))))],
ctxt'))
end;
in
fold_map (seq_assm t o mk_set innerTs) (sets_of_bnf bnf) ctxt
|>> flat
end)
| T =>
if T = A then ([HOLogic.mk_Trueprop (the (build_binary_fun_app Ps t ctr_args))], ctxt)
else ([], ctxt));
fun mk_prems_for_ctr A Ps ctr ctxt =
let
val (args, ctxt') = mk_Frees "z" (binder_types (fastype_of ctr)) ctxt;
in
fold_map (mk_prems A Ps (list_comb (ctr, args))) args ctxt'
|>> map (fold_rev Logic.all args) o flat
|>> (fn prems => (prems, mk_names (length prems) (name_of_ctr ctr)))
end;
fun mk_prems_and_concl_for_type A Ps ((fpT, ctrs), set) ctxt =
let
val ((x, fp), ctxt') = ctxt
|> yield_singleton (mk_Frees "x") A
||>> yield_singleton (mk_Frees "a") fpT;
val concl = mk_Ball (set $ fp) (Term.absfree (dest_Free x)
(the (build_binary_fun_app Ps x fp)));
in
fold_map (mk_prems_for_ctr A Ps) ctrs ctxt'
|>> split_list
|>> map_prod flat flat
|>> apfst (rpair concl)
end;
fun mk_thm ctxt fpTs ctrss sets =
let
val A = HOLogic.dest_setT (range_type (fastype_of (hd sets)));
val (Ps, ctxt') = mk_Frees "P" (map (fn fpT => A --> fpT --> HOLogic.boolT) fpTs) ctxt;
val (((prems, concl), case_names), ctxt'') =
fold_map (mk_prems_and_concl_for_type A Ps) (fpTs ~~ ctrss ~~ sets) ctxt'
|>> apfst split_list o split_list
|>> apfst (apfst flat)
|>> apfst (apsnd (Library.foldr1 HOLogic.mk_conj))
|>> apsnd flat;
val vars = fold (Variable.add_free_names lthy) (concl :: prems) [];
val thm =
Goal.prove_sorry lthy vars prems (HOLogic.mk_Trueprop concl)
(fn {context = ctxt, prems} =>
mk_set_induct0_tac ctxt (map (Thm.cterm_of ctxt'') Ps) prems dtor_set_inducts
exhausts set_pre_defs ctor_defs dtor_ctors Abs_pre_inverses)
|> Thm.close_derivation;
val case_names_attr = Attrib.case_names (quasi_unambiguous_case_names case_names);
val induct_set_attrs = map (Attrib.internal o K o Induct.induct_pred o name_of_set) sets;
in
(thm, case_names_attr :: induct_set_attrs)
end
val consumes_attr = Attrib.consumes 1;
in
map (mk_thm lthy fpTs ctrss
#> nn = 1 ? map_prod (fn thm => rotate_prems ~1 (thm RS bspec)) (cons consumes_attr))
(transpose setss)
end;
fun mk_coinduct_strong_thm coind rel_eqs rel_monos mk_vimage2p ctxt =
let
val n = Thm.nprems_of coind;
val m = Thm.nprems_of (hd rel_monos) - n;
fun mk_inst phi =
(phi, Thm.cterm_of ctxt (mk_union (Var phi, HOLogic.eq_const (fst (dest_pred2T (#2 phi))))));
val insts = Term.add_vars (Thm.prop_of coind) [] |> rev |> take n |> map mk_inst;
fun mk_unfold rel_eq rel_mono =
let
val eq = iffD2 OF [rel_eq RS @{thm predicate2_eqD}, refl];
val mono = rel_mono OF (replicate m @{thm order_refl} @ replicate n @{thm eq_subset});
in mk_vimage2p (eq RS (mono RS @{thm predicate2D})) RS eqTrueI end;
val unfolds = map2 mk_unfold rel_eqs rel_monos @ @{thms sup_fun_def sup_bool_def
imp_disjL all_conj_distrib subst_eq_imp simp_thms(18,21,35)};
in
Thm.instantiate ([], insts) coind
|> unfold_thms ctxt unfolds
end;
fun derive_coinduct_thms_for_types strong alter_r pre_bnfs dtor_coinduct dtor_ctors
live_nesting_bnfs fpTs Xs ctrXs_Tsss ns fp_abs_inverses abs_inverses mk_vimage2p ctr_defss
(ctr_sugars : ctr_sugar list) ctxt =
let
val nn = length pre_bnfs;
val pre_rel_defs = map rel_def_of_bnf pre_bnfs;
val live_nesting_rel_eqs = map rel_eq_of_bnf live_nesting_bnfs;
val fp_b_names = map base_name_of_typ fpTs;
val discss = map #discs ctr_sugars;
val selsss = map #selss ctr_sugars;
val exhausts = map #exhaust ctr_sugars;
val disc_thmsss = map #disc_thmss ctr_sugars;
val sel_thmsss = map #sel_thmss ctr_sugars;
val (((rs, us'), vs'), _) = ctxt
|> mk_Frees "R" (map (fn T => mk_pred2T T T) fpTs)
||>> Variable.variant_fixes fp_b_names
||>> Variable.variant_fixes (map (suffix "'") fp_b_names);
val us = map2 (curry Free) us' fpTs;
val udiscss = map2 (map o rapp) us discss;
val uselsss = map2 (map o map o rapp) us selsss;
val vs = map2 (curry Free) vs' fpTs;
val vdiscss = map2 (map o rapp) vs discss;
val vselsss = map2 (map o map o rapp) vs selsss;
val uvrs = @{map 3} (fn r => fn u => fn v => r $ u $ v) rs us vs;
val uv_eqs = map2 (curry HOLogic.mk_eq) us vs;
val strong_rs =
@{map 4} (fn u => fn v => fn uvr => fn uv_eq =>
fold_rev Term.lambda [u, v] (HOLogic.mk_disj (uvr, uv_eq))) us vs uvrs uv_eqs;
fun build_the_rel rs' T Xs_T =
build_rel [] ctxt [] (fn (_, X) => nth rs' (find_index (curry (op =) X) Xs)) (T, Xs_T)
|> Term.subst_atomic_types (Xs ~~ fpTs);
fun build_rel_app rs' usel vsel Xs_T =
fold rapp [usel, vsel] (build_the_rel rs' (fastype_of usel) Xs_T);
fun mk_prem_ctr_concls rs' n k udisc usels vdisc vsels ctrXs_Ts =
(if k = n then [] else [HOLogic.mk_eq (udisc, vdisc)]) @
(if null usels then
[]
else
[Library.foldr HOLogic.mk_imp (if n = 1 then [] else [udisc, vdisc],
Library.foldr1 HOLogic.mk_conj (@{map 3} (build_rel_app rs') usels vsels ctrXs_Ts))]);
fun mk_prem_concl rs' n udiscs uselss vdiscs vselss ctrXs_Tss =
flat (@{map 6} (mk_prem_ctr_concls rs' n) (1 upto n) udiscs uselss vdiscs vselss ctrXs_Tss)
|> Library.foldr1 HOLogic.mk_conj
handle List.Empty => @{term True};
fun mk_prem rs' uvr u v n udiscs uselss vdiscs vselss ctrXs_Tss =
fold_rev Logic.all [u, v] (Logic.mk_implies (HOLogic.mk_Trueprop uvr,
HOLogic.mk_Trueprop (mk_prem_concl rs' n udiscs uselss vdiscs vselss ctrXs_Tss)));
val concl =
HOLogic.mk_Trueprop (Library.foldr1 HOLogic.mk_conj
(@{map 3} (fn uvr => fn u => fn v => HOLogic.mk_imp (uvr, HOLogic.mk_eq (u, v)))
uvrs us vs));
fun mk_goal rs0' =
Logic.list_implies (@{map 9} (mk_prem (map alter_r rs0')) uvrs us vs ns udiscss uselsss
vdiscss vselsss ctrXs_Tsss, concl);
val goals = map mk_goal ([rs] @ (if strong then [strong_rs] else []));
fun prove dtor_coinduct' goal =
Variable.add_free_names ctxt goal []
|> (fn vars => Goal.prove_sorry ctxt vars [] goal (fn {context = ctxt, ...} =>
mk_coinduct_tac ctxt live_nesting_rel_eqs nn ns dtor_coinduct' pre_rel_defs fp_abs_inverses
abs_inverses dtor_ctors exhausts ctr_defss disc_thmsss sel_thmsss))
|> Thm.close_derivation;
val rel_eqs = map rel_eq_of_bnf pre_bnfs;
val rel_monos = map rel_mono_of_bnf pre_bnfs;
val dtor_coinducts =
[dtor_coinduct] @
(if strong then [mk_coinduct_strong_thm dtor_coinduct rel_eqs rel_monos mk_vimage2p ctxt]
else []);
in
map2 (postproc_co_induct ctxt nn mp @{thm conj_commute[THEN iffD1]} oo prove)
dtor_coinducts goals
end;
fun derive_coinduct_corecs_thms_for_types pre_bnfs (x, cs, cpss, (((pgss, _, _, _), cqgsss), _))
dtor_coinduct dtor_injects dtor_ctors dtor_corec_thms live_nesting_bnfs fpTs Cs Xs ctrXs_Tsss
kss mss ns fp_abs_inverses abs_inverses mk_vimage2p ctr_defss (ctr_sugars : ctr_sugar list)
corecs corec_defs ctxt =
let
fun mk_ctor_dtor_corec_thm dtor_inject dtor_ctor corec =
iffD1 OF [dtor_inject, trans OF [corec, dtor_ctor RS sym]];
val ctor_dtor_corec_thms =
@{map 3} mk_ctor_dtor_corec_thm dtor_injects dtor_ctors dtor_corec_thms;
val pre_map_defs = map map_def_of_bnf pre_bnfs;
val live_nesting_map_ident0s = map map_ident0_of_bnf live_nesting_bnfs;
val fp_b_names = map base_name_of_typ fpTs;
val ctrss = map #ctrs ctr_sugars;
val discss = map #discs ctr_sugars;
val selsss = map #selss ctr_sugars;
val disc_thmsss = map #disc_thmss ctr_sugars;
val discIss = map #discIs ctr_sugars;
val sel_thmsss = map #sel_thmss ctr_sugars;
val coinduct_thms_pairs = derive_coinduct_thms_for_types true I pre_bnfs dtor_coinduct
dtor_ctors live_nesting_bnfs fpTs Xs ctrXs_Tsss ns fp_abs_inverses abs_inverses mk_vimage2p
ctr_defss ctr_sugars ctxt;
fun mk_maybe_not pos = not pos ? HOLogic.mk_not;
val gcorecs = map (lists_bmoc pgss) corecs;
val corec_thmss =
let
val (us', _) = ctxt
|> Variable.variant_fixes fp_b_names;
val us = map2 (curry Free) us' fpTs;
fun mk_goal c cps gcorec n k ctr m cfs' =
fold_rev (fold_rev Logic.all) ([c] :: pgss)
(Logic.list_implies (seq_conds (HOLogic.mk_Trueprop oo mk_maybe_not) n k cps,
mk_Trueprop_eq (gcorec $ c, Term.list_comb (ctr, take m cfs'))));
val mk_U = typ_subst_nonatomic (map2 (fn C => fn fpT => (mk_sumT (fpT, C), fpT)) Cs fpTs);
fun tack (c, u) f =
let val x' = Free (x, mk_sumT (fastype_of u, fastype_of c)) in
Term.lambda x' (mk_case_sum (Term.lambda u u, Term.lambda c (f $ c)) $ x')
end;
fun build_corec cqg =
let val T = fastype_of cqg in
if exists_subtype_in Cs T then
let
val U = mk_U T;
val build_simple =
indexify fst (map2 (curry mk_sumT) fpTs Cs)
(fn kk => fn _ => tack (nth cs kk, nth us kk) (nth gcorecs kk));
in
build_map ctxt [] build_simple (T, U) $ cqg
end
else
cqg
end;
val cqgsss' = map (map (map build_corec)) cqgsss;
val goalss = @{map 8} (@{map 4} oooo mk_goal) cs cpss gcorecs ns kss ctrss mss cqgsss';
val tacss =
@{map 4} (map ooo mk_corec_tac corec_defs live_nesting_map_ident0s)
ctor_dtor_corec_thms pre_map_defs abs_inverses ctr_defss;
fun prove goal tac =
Goal.prove_sorry ctxt [] [] goal (tac o #context)
|> Thm.close_derivation;
in
map2 (map2 prove) goalss tacss
|> map (map (unfold_thms ctxt @{thms case_sum_if}))
end;
val corec_disc_iff_thmss =
let
fun mk_goal c cps gcorec n k disc =
mk_Trueprop_eq (disc $ (gcorec $ c),
if n = 1 then @{const True}
else Library.foldr1 HOLogic.mk_conj (seq_conds mk_maybe_not n k cps));
val goalss = @{map 6} (map2 oooo mk_goal) cs cpss gcorecs ns kss discss;
fun mk_case_split' cp = Thm.instantiate' [] [SOME (Thm.cterm_of ctxt cp)] @{thm case_split};
val case_splitss' = map (map mk_case_split') cpss;
val tacss = @{map 3} (map oo mk_corec_disc_iff_tac) case_splitss' corec_thmss disc_thmsss;
fun prove goal tac =
Variable.add_free_names ctxt goal []
|> (fn vars => Goal.prove_sorry ctxt vars [] goal (tac o #context))
|> Thm.close_derivation;
fun proves [_] [_] = []
| proves goals tacs = map2 prove goals tacs;
in
map2 proves goalss tacss
end;
fun mk_corec_disc_thms corecs discIs = map (op RS) (corecs ~~ discIs);
val corec_disc_thmss = map2 mk_corec_disc_thms corec_thmss discIss;
fun mk_corec_sel_thm corec_thm sel sel_thm =
let
val (domT, ranT) = dest_funT (fastype_of sel);
val arg_cong' =
Thm.instantiate' (map (SOME o Thm.ctyp_of ctxt) [domT, ranT])
[NONE, NONE, SOME (Thm.cterm_of ctxt sel)] arg_cong
|> Thm.varifyT_global;
val sel_thm' = sel_thm RSN (2, trans);
in
corec_thm RS arg_cong' RS sel_thm'
end;
fun mk_corec_sel_thms corec_thmss =
@{map 3} (@{map 3} (map2 o mk_corec_sel_thm)) corec_thmss selsss sel_thmsss;
val corec_sel_thmsss = mk_corec_sel_thms corec_thmss;
in
((coinduct_thms_pairs,
mk_coinduct_attrs fpTs (map #ctrs ctr_sugars) (map #discs ctr_sugars) mss),
corec_thmss,
corec_disc_thmss,
(corec_disc_iff_thmss, simp_attrs),
(corec_sel_thmsss, simp_attrs))
end;
fun define_co_datatypes prepare_plugins prepare_constraint prepare_typ prepare_term fp construct_fp
((raw_plugins, discs_sels0), specs) lthy =
let
val plugins = prepare_plugins lthy raw_plugins;
val discs_sels = discs_sels0 orelse fp = Greatest_FP;
val nn = length specs;
val fp_bs = map type_binding_of_spec specs;
val fp_b_names = map Binding.name_of fp_bs;
val fp_common_name = mk_common_name fp_b_names;
val map_bs = map map_binding_of_spec specs;
val rel_bs = map rel_binding_of_spec specs;
val pred_bs = map pred_binding_of_spec specs;
fun prepare_type_arg (_, (ty, c)) =
let val TFree (s, _) = prepare_typ lthy ty in
TFree (s, prepare_constraint lthy c)
end;
val Ass0 = map (map prepare_type_arg o type_args_named_constrained_of_spec) specs;
val unsorted_Ass0 = map (map (resort_tfree_or_tvar @{sort type})) Ass0;
val unsorted_As = Library.foldr1 (merge_type_args fp) unsorted_Ass0;
val num_As = length unsorted_As;
val set_boss = map (map fst o type_args_named_constrained_of_spec) specs;
val set_bss = map (map (the_default Binding.empty)) set_boss;
fun add_fake_type spec =
Typedecl.basic_typedecl {final = true}
(type_binding_of_spec spec, num_As, Mixfix.reset_pos (mixfix_of_spec spec));
val (fake_T_names, fake_lthy) = fold_map add_fake_type specs lthy;
val qsoty = quote o Syntax.string_of_typ fake_lthy;
val _ = (case Library.duplicates (op =) unsorted_As of [] => ()
| A :: _ => error ("Duplicate type parameter " ^ qsoty A ^ " in " ^ co_prefix fp ^
"datatype specification"));
val bad_args =
map (Logic.type_map (singleton (Variable.polymorphic lthy))) unsorted_As
|> filter_out Term.is_TVar;
val _ = null bad_args orelse
error ("Locally fixed type argument " ^ qsoty (hd bad_args) ^ " in " ^ co_prefix fp ^
"datatype specification");
val mixfixes = map mixfix_of_spec specs;
val _ = (case Library.duplicates Binding.eq_name fp_bs of [] => ()
| b :: _ => error ("Duplicate type name declaration " ^ quote (Binding.name_of b)));
val mx_ctr_specss = map mixfixed_ctr_specs_of_spec specs;
val ctr_specss = map (map fst) mx_ctr_specss;
val ctr_mixfixess = map (map snd) mx_ctr_specss;
val disc_bindingss = map (map disc_of_ctr_spec) ctr_specss;
val ctr_bindingss =
map2 (fn fp_b_name => map (Binding.qualify false fp_b_name o ctr_of_ctr_spec)) fp_b_names
ctr_specss;
val ctr_argsss = map (map args_of_ctr_spec) ctr_specss;
val sel_bindingsss = map (map (map fst)) ctr_argsss;
val fake_ctr_Tsss0 = map (map (map (prepare_typ fake_lthy o snd))) ctr_argsss;
val raw_sel_default_eqss = map sel_default_eqs_of_spec specs;
val (As :: _) :: fake_ctr_Tsss =
burrow (burrow (Syntax.check_typs fake_lthy)) (Ass0 :: fake_ctr_Tsss0);
val As' = map dest_TFree As;
val rhs_As' = fold (fold (fold Term.add_tfreesT)) fake_ctr_Tsss [];
val _ = (case subtract (op =) As' rhs_As' of [] => ()
| extras => error ("Extra type variables on right-hand side: " ^
commas (map (qsoty o TFree) extras)));
val fake_Ts = map (fn s => Type (s, As)) fake_T_names;
val ((((Bs0, Cs), Es), Xs), _) = lthy
|> fold (Variable.declare_typ o resort_tfree_or_tvar dummyS) unsorted_As
|> mk_TFrees num_As
||>> mk_TFrees nn
||>> mk_TFrees nn
||>> variant_tfrees fp_b_names;
fun eq_fpT_check (T as Type (s, Ts)) (T' as Type (s', Ts')) =
s = s' andalso (Ts = Ts' orelse
error ("Wrong type arguments in " ^ co_prefix fp ^ "recursive type " ^ qsoty T ^
" (expected " ^ qsoty T' ^ ")"))
| eq_fpT_check _ _ = false;
fun freeze_fp (T as Type (s, Ts)) =
(case find_index (eq_fpT_check T) fake_Ts of
~1 => Type (s, map freeze_fp Ts)
| kk => nth Xs kk)
| freeze_fp T = T;
val unfreeze_fp = Term.typ_subst_atomic (Xs ~~ fake_Ts);
val ctrXs_Tsss = map (map (map freeze_fp)) fake_ctr_Tsss;
val ctrXs_repTs = map mk_sumprodT_balanced ctrXs_Tsss;
val _ =
let
fun add_deps i =
fold (fn T => fold_index (fn (j, X) =>
(i <> j andalso Term.exists_subtype (curry (op =) X) T) ? insert (op =) (i, j)) Xs);
val add_missing_nodes = fold (AList.default (op =) o rpair []) (0 upto nn - 1);
val deps = fold_index (uncurry (fold o add_deps)) ctrXs_Tsss []
|> AList.group (op =)
|> add_missing_nodes;
val G = Int_Graph.make (map (apfst (rpair ())) deps);
val sccs = map (sort int_ord) (Int_Graph.strong_conn G);
val str_of_scc = prefix (co_prefix fp ^ "datatype ") o
space_implode " and " o map (suffix " = \<dots>" o Long_Name.base_name);
fun warn [_] = ()
| warn sccs =
warning ("Defined types not fully mutually " ^ co_prefix fp ^ "recursive\n\
\Alternative specification:\n" ^
cat_lines (map (prefix " " o str_of_scc o map (nth fp_b_names)) sccs));
in
warn (order_strong_conn (op =) Int_Graph.make Int_Graph.topological_order deps sccs)
end;
val killed_As =
map_filter (fn (A, set_bos) => if exists is_none set_bos then SOME A else NONE)
(As ~~ transpose set_boss);
val (((pre_bnfs, absT_infos), _), (fp_res as {bnfs = fp_bnfs as any_fp_bnf :: _, ctors = ctors0,
dtors = dtors0, xtor_co_recs = xtor_co_recs0, xtor_co_induct, dtor_ctors, ctor_dtors,
ctor_injects, dtor_injects, xtor_maps, xtor_setss, xtor_rels, xtor_co_rec_thms,
xtor_rel_co_induct, dtor_set_inducts, xtor_co_rec_transfers, xtor_co_rec_o_maps, ...},
lthy)) =
fixpoint_bnf false I (construct_fp mixfixes map_bs rel_bs pred_bs set_bss) fp_bs
(map dest_TFree As) (map dest_TFree killed_As) (map dest_TFree Xs) ctrXs_repTs
empty_comp_cache lthy
handle BAD_DEAD (X, X_backdrop) =>
(case X_backdrop of
Type (bad_tc, _) =>
let
val fake_T = qsoty (unfreeze_fp X);
val fake_T_backdrop = qsoty (unfreeze_fp X_backdrop);
fun register_hint () =
"\nUse the " ^ quote (#1 @{command_keyword bnf}) ^ " command to register " ^
quote bad_tc ^ " as a bounded natural functor to allow nested (co)recursion through \
\it";
in
if is_some (bnf_of lthy bad_tc) orelse is_some (fp_sugar_of lthy bad_tc) then
error ("Inadmissible " ^ co_prefix fp ^ "recursive occurrence of type " ^ fake_T ^
" in type expression " ^ fake_T_backdrop)
else if is_some (Old_Datatype_Data.get_info (Proof_Context.theory_of lthy)
bad_tc) then
error ("Unsupported " ^ co_prefix fp ^ "recursive occurrence of type " ^ fake_T ^
" via the old-style datatype " ^ quote bad_tc ^ " in type expression " ^
fake_T_backdrop ^ register_hint ())
else
error ("Unsupported " ^ co_prefix fp ^ "recursive occurrence of type " ^ fake_T ^
" via type constructor " ^ quote bad_tc ^ " in type expression " ^ fake_T_backdrop ^
register_hint ())
end);
val time = time lthy;
val timer = time (Timer.startRealTimer ());
val fp_nesting_bnfs = nesting_bnfs lthy ctrXs_Tsss Xs;
val live_nesting_bnfs = nesting_bnfs lthy ctrXs_Tsss As;
val pre_map_defs = map map_def_of_bnf pre_bnfs;
val pre_set_defss = map set_defs_of_bnf pre_bnfs;
val pre_rel_defs = map rel_def_of_bnf pre_bnfs;
val fp_nesting_set_maps = maps set_map_of_bnf fp_nesting_bnfs;
val fp_nesting_rel_eq_onps = map rel_eq_onp_of_bnf fp_nesting_bnfs;
val live_nesting_map_id0s = map map_id0_of_bnf live_nesting_bnfs;
val live_nesting_map_ident0s = map map_ident0_of_bnf live_nesting_bnfs;
val live_nesting_set_maps = maps set_map_of_bnf live_nesting_bnfs;
val live_nesting_rel_eqs = map rel_eq_of_bnf live_nesting_bnfs;
val live_nesting_rel_eq_onps = map rel_eq_onp_of_bnf live_nesting_bnfs;
val liveness = liveness_of_fp_bnf num_As any_fp_bnf;
val live = live_of_bnf any_fp_bnf;
val _ =
if live = 0 andalso exists (not o Binding.is_empty) (map_bs @ rel_bs @ pred_bs) then
warning "Map function, relator, and predicator names ignored"
else
();
val Bs = @{map 3} (fn alive => fn A as TFree (_, S) => fn B =>
if alive then resort_tfree_or_tvar S B else A)
liveness As Bs0;
val B_ify_T = Term.typ_subst_atomic (As ~~ Bs);
val B_ify = Term.map_types B_ify_T;
val live_AsBs = filter (op <>) (As ~~ Bs);
val abss = map #abs absT_infos;
val reps = map #rep absT_infos;
val absTs = map #absT absT_infos;
val repTs = map #repT absT_infos;
val abs_injects = map #abs_inject absT_infos;
val abs_inverses = map #abs_inverse absT_infos;
val type_definitions = map #type_definition absT_infos;
val ctors = map (mk_ctor As) ctors0;
val dtors = map (mk_dtor As) dtors0;
val fpTs = map (domain_type o fastype_of) dtors;
val fpBTs = map B_ify_T fpTs;
val code_attrs =
if plugins code_plugin then [Code.add_default_eqn_attrib Code.Equation] else [];
val real_unfreeze_fp = Term.typ_subst_atomic (Xs ~~ fpTs);
val ctr_Tsss = map (map (map real_unfreeze_fp)) ctrXs_Tsss;
val ns = map length ctr_Tsss;
val kss = map (fn n => 1 upto n) ns;
val mss = map (map length) ctr_Tsss;
val (xtor_co_recs, recs_args_types, corecs_args_types) =
mk_co_recs_prelims lthy fp ctr_Tsss fpTs Cs absTs repTs ns mss xtor_co_recs0;
fun define_ctrs_dtrs_for_type_etc fp_bnf fp_b fpT C E ctor dtor xtor_co_rec ctor_dtor dtor_ctor
ctor_inject pre_map_def pre_set_defs pre_rel_def fp_map_thm fp_set_thms fp_rel_thm n ks ms
abs abs_inject type_definition ctr_bindings ctr_mixfixes ctr_Tss disc_bindings sel_bindingss
raw_sel_default_eqs lthy =
let
val fp_b_name = Binding.name_of fp_b;
val ((xss, ctrs0, ctor_iff_dtor_thm, ctr_defs), lthy) =
define_ctrs_dtrs_for_type fp_b_name fpT ctor dtor ctor_dtor dtor_ctor n ks abs
ctr_bindings ctr_mixfixes ctr_Tss lthy;
val ctrs = map (mk_ctr As) ctrs0;
val sel_default_eqs =
let
val sel_Tss = map (map (curry (op -->) fpT)) ctr_Tss;
val sel_bTs =
flat sel_bindingss ~~ flat sel_Tss
|> filter_out (Binding.is_empty o fst)
|> distinct (Binding.eq_name o apply2 fst);
val sel_default_lthy = fake_local_theory_for_sel_defaults sel_bTs lthy
in
map (prepare_term sel_default_lthy) raw_sel_default_eqs
end;
fun mk_binding pre =
Binding.qualify false fp_b_name (Binding.prefix_name (pre ^ "_") fp_b);
fun massage_res (ctr_sugar, maps_sets_rels) =
(maps_sets_rels, (ctrs, xss, ctor_iff_dtor_thm, ctr_defs, ctr_sugar));
in
(wrap_ctrs plugins fp discs_sels fp_b_name ctor_inject n ms abs_inject type_definition
disc_bindings sel_bindingss sel_default_eqs ctrs0 ctor_iff_dtor_thm ctr_defs
#> (fn (ctr_sugar, lthy) =>
derive_map_set_rel_pred_thms plugins fp live As Bs C E abs_inverses ctr_defs
fp_nesting_set_maps fp_nesting_rel_eq_onps live_nesting_map_id0s
live_nesting_map_ident0s live_nesting_set_maps live_nesting_rel_eqs
live_nesting_rel_eq_onps [] fp_b_name fp_bnf fp_bnfs fpT ctor ctor_dtor dtor_ctor
pre_map_def pre_set_defs pre_rel_def fp_map_thm fp_set_thms fp_rel_thm [] [] [] ctr_Tss
abs ctr_sugar lthy
|>> pair ctr_sugar)
##>>
(if fp = Least_FP then define_rec (the recs_args_types) mk_binding fpTs Cs reps
else define_corec (the corecs_args_types) mk_binding fpTs Cs abss) xtor_co_rec
#>> apfst massage_res, lthy)
end;
fun wrap_ctrs_derive_map_set_rel_pred_thms_define_co_rec_for_types (wrap_one_etcs, lthy) =
fold_map I wrap_one_etcs lthy
|>> apsnd split_list o apfst (apsnd @{split_list 5} o apfst @{split_list 17} o split_list)
o split_list;
fun mk_simp_thms ({injects, distincts, case_thms, ...} : ctr_sugar) co_recs map_thms rel_injects
rel_distincts set_thmss =
injects @ distincts @ case_thms @ co_recs @ map_thms @ rel_injects @ rel_distincts @
set_thmss;
fun mk_co_rec_transfer_goals lthy co_recs =
let
val BE_ify = Term.subst_atomic_types (live_AsBs @ (Cs ~~ Es));
val ((Rs, Ss), names_lthy) = lthy
|> mk_Frees "R" (map (uncurry mk_pred2T) live_AsBs)
||>> mk_Frees "S" (map2 mk_pred2T Cs Es);
val co_recBs = map BE_ify co_recs;
in
(Rs, Ss, map2 (mk_parametricity_goal lthy (Rs @ Ss)) co_recs co_recBs, names_lthy)
end;
fun derive_rec_transfer_thms lthy recs rec_defs (SOME (_, _, _, xsssss)) =
let
val (Rs, Ss, goals, _) = mk_co_rec_transfer_goals lthy recs;
val goal = Logic.mk_conjunction_balanced goals;
val vars = Variable.add_free_names lthy goal [];
in
Goal.prove_sorry lthy vars [] goal
(fn {context = ctxt, prems = _} =>
mk_rec_transfer_tac ctxt nn ns (map (Thm.cterm_of ctxt) Ss)
(map (Thm.cterm_of ctxt) Rs) xsssss rec_defs xtor_co_rec_transfers pre_rel_defs
live_nesting_rel_eqs)
|> Thm.close_derivation
|> Conjunction.elim_balanced nn
end;
fun derive_rec_o_map_thmss lthy recs rec_defs =
if live = 0 then
replicate nn []
else
let
fun variant_names n pre = fst (Variable.variant_fixes (replicate n pre) lthy);
val maps0 = map map_of_bnf fp_bnfs;
val f_names = variant_names num_As "f";
val fs = map2 (curry Free) f_names (map (op -->) (As ~~ Bs));
val live_gs = AList.find (op =) (fs ~~ liveness) true;
val gmaps = map (fn map0 => Term.list_comb (mk_map live As Bs map0, live_gs)) maps0;
val rec_arg_Ts = binder_fun_types (hd (map fastype_of recs));
val num_rec_args = length rec_arg_Ts;
val g_Ts = map B_ify_T rec_arg_Ts;
val g_names = variant_names num_rec_args "g";
val gs = map2 (curry Free) g_names g_Ts;
val grecs = map (fn recx => Term.list_comb (Term.map_types B_ify_T recx, gs)) recs;
val rec_o_map_lhss = map2 (curry HOLogic.mk_comp) grecs gmaps;
val ABfs = (As ~~ Bs) ~~ fs;
fun mk_rec_arg_arg (x as Free (_, T)) =
let val U = B_ify_T T in
if T = U then x else build_map lthy [] (the o AList.lookup (op =) ABfs) (T, U) $ x
end;
fun mk_rec_o_map_arg rec_arg_T h =
let
val x_Ts = binder_types rec_arg_T;
val m = length x_Ts;
val x_names = variant_names m "x";
val xs = map2 (curry Free) x_names x_Ts;
val xs' = map mk_rec_arg_arg xs;
in
fold_rev Term.lambda xs (Term.list_comb (h, xs'))
end;
fun mk_rec_o_map_rhs recx =
let val args = map2 mk_rec_o_map_arg rec_arg_Ts gs in
Term.list_comb (recx, args)
end;
val rec_o_map_rhss = map mk_rec_o_map_rhs recs;
val rec_o_map_goals =
map2 (fold_rev (fold_rev Logic.all) [fs, gs] o HOLogic.mk_Trueprop oo
curry HOLogic.mk_eq) rec_o_map_lhss rec_o_map_rhss;
val rec_o_map_thms =
@{map 3} (fn goal => fn rec_def => fn ctor_rec_o_map =>
Goal.prove_sorry lthy [] [] goal (fn {context = ctxt, ...} =>
mk_co_rec_o_map_tac ctxt rec_def pre_map_defs live_nesting_map_ident0s
abs_inverses ctor_rec_o_map)
|> Thm.close_derivation)
rec_o_map_goals rec_defs xtor_co_rec_o_maps;
in
map single rec_o_map_thms
end;
fun derive_note_induct_recs_thms_for_types
((((map_thmss, map_disc_iffss, map_selsss, rel_injectss, rel_distinctss, rel_selss,
rel_intross, rel_casess, pred_injectss, set_thmss, set_selsssss, set_introsssss,
set_casess, ctr_transferss, case_transferss, disc_transferss, sel_transferss),
(ctrss, _, ctor_iff_dtors, ctr_defss, ctr_sugars)),
(recs, rec_defs)), lthy) =
let
val ((induct_thms, induct_thm, induct_attrs), (rec_thmss, rec_attrs)) =
derive_induct_recs_thms_for_types plugins pre_bnfs recs_args_types xtor_co_induct
xtor_co_rec_thms live_nesting_bnfs fp_nesting_bnfs fpTs Cs Xs ctrXs_Tsss abs_inverses
type_definitions abs_inverses ctrss ctr_defss recs rec_defs lthy;
val rec_transfer_thmss =
map single (derive_rec_transfer_thms lthy recs rec_defs recs_args_types);
val induct_type_attr = Attrib.internal o K o Induct.induct_type;
val induct_pred_attr = Attrib.internal o K o Induct.induct_pred;
val ((rel_induct_thmss, common_rel_induct_thms),
(rel_induct_attrs, common_rel_induct_attrs)) =
if live = 0 then
((replicate nn [], []), ([], []))
else
let
val ((rel_induct_thms, common_rel_induct_thm), rel_induct_attrs) =
derive_rel_induct_thms_for_types lthy nn fpTs As Bs ctrss ctr_Tsss
(map #exhaust ctr_sugars) xtor_rel_co_induct ctr_defss ctor_injects
pre_rel_defs abs_inverses live_nesting_rel_eqs;
in
((map single rel_induct_thms, single common_rel_induct_thm),
(rel_induct_attrs, rel_induct_attrs))
end;
val rec_o_map_thmss = derive_rec_o_map_thmss lthy recs rec_defs;
val simp_thmss =
@{map 6} mk_simp_thms ctr_sugars rec_thmss map_thmss rel_injectss rel_distinctss
set_thmss;
val common_notes =
(if nn > 1 then
[(inductN, [induct_thm], K induct_attrs),
(rel_inductN, common_rel_induct_thms, K common_rel_induct_attrs)]
else
[])
|> massage_simple_notes fp_common_name;
val notes =
[(inductN, map single induct_thms, fn T_name => induct_attrs @ [induct_type_attr T_name]),
(recN, rec_thmss, K rec_attrs),
(rec_o_mapN, rec_o_map_thmss, K []),
(rec_transferN, rec_transfer_thmss, K []),
(rel_inductN, rel_induct_thmss, K (rel_induct_attrs @ [induct_pred_attr ""])),
(simpsN, simp_thmss, K [])]
|> massage_multi_notes fp_b_names fpTs;
in
lthy
|> Spec_Rules.add Spec_Rules.Equational (recs, flat rec_thmss)
|> Local_Theory.notes (common_notes @ notes)
(* for "datatype_realizer.ML": *)
|>> name_noted_thms
(fst (dest_Type (hd fpTs)) ^ implode (map (prefix "_") (tl fp_b_names))) inductN
|-> interpret_bnfs_register_fp_sugars plugins fpTs fpBTs Xs Least_FP pre_bnfs absT_infos
fp_nesting_bnfs live_nesting_bnfs fp_res ctrXs_Tsss ctor_iff_dtors ctr_defss ctr_sugars
recs rec_defs map_thmss [induct_thm] (map single induct_thms) rec_thmss (replicate nn [])
(replicate nn []) rel_injectss rel_distinctss map_disc_iffss map_selsss rel_selss
rel_intross rel_casess pred_injectss set_thmss set_selsssss set_introsssss set_casess
ctr_transferss case_transferss disc_transferss (replicate nn []) (replicate nn [])
rec_transfer_thmss common_rel_induct_thms rel_induct_thmss [] (replicate nn [])
sel_transferss rec_o_map_thmss
end;
fun derive_corec_transfer_thms lthy corecs corec_defs =
let
val (Rs, Ss, goals, _) = mk_co_rec_transfer_goals lthy corecs;
val (_, _, _, (((pgss, pss, qssss, gssss), _), _)) = the corecs_args_types;
val goal = Logic.mk_conjunction_balanced goals;
val vars = Variable.add_free_names lthy goal [];
in
Goal.prove_sorry lthy vars [] goal
(fn {context = ctxt, prems = _} =>
mk_corec_transfer_tac ctxt (map (Thm.cterm_of ctxt) Ss) (map (Thm.cterm_of ctxt) Rs)
type_definitions corec_defs xtor_co_rec_transfers pre_rel_defs
live_nesting_rel_eqs (flat pgss) pss qssss gssss)
|> Thm.close_derivation
|> Conjunction.elim_balanced (length goals)
end;
fun derive_map_o_corec_thmss lthy0 lthy2 corecs corec_defs =
if live = 0 then
replicate nn []
else
let
fun variant_names n pre = fst (Variable.variant_fixes (replicate n pre) lthy0);
val maps0 = map map_of_bnf fp_bnfs;
val f_names = variant_names num_As "f";
val fs = map2 (curry Free) f_names (map (op -->) (As ~~ Bs));
val live_fs = AList.find (op =) (fs ~~ liveness) true;
val fmaps = map (fn map0 => Term.list_comb (mk_map live As Bs map0, live_fs)) maps0;
val corec_arg_Ts = binder_fun_types (hd (map fastype_of corecs));
val num_rec_args = length corec_arg_Ts;
val g_names = variant_names num_rec_args "g";
val gs = map2 (curry Free) g_names corec_arg_Ts;
val gcorecs = map (fn corecx => Term.list_comb (corecx, gs)) corecs;
val map_o_corec_lhss = map2 (curry HOLogic.mk_comp) fmaps gcorecs;
val ABfs = (As ~~ Bs) ~~ fs;
fun mk_map_o_corec_arg corec_argB_T g =
let
val T = range_type (fastype_of g);
val U = range_type corec_argB_T;
in
if T = U then g
else HOLogic.mk_comp (build_map lthy2 [] (the o AList.lookup (op =) ABfs) (T, U), g)
end;
fun mk_map_o_corec_rhs corecx =
let val args = map2 (mk_map_o_corec_arg o B_ify_T) corec_arg_Ts gs in
Term.list_comb (B_ify corecx, args)
end;
val map_o_corec_rhss = map mk_map_o_corec_rhs corecs;
val map_o_corec_goals =
map2 (fold_rev (fold_rev Logic.all) [fs, gs] o HOLogic.mk_Trueprop oo
curry HOLogic.mk_eq) map_o_corec_lhss map_o_corec_rhss;
val map_o_corec_thms =
@{map 3} (fn goal => fn corec_def => fn dtor_map_o_corec =>
Goal.prove_sorry lthy2 [] [] goal (fn {context = ctxt, ...} =>
mk_co_rec_o_map_tac ctxt corec_def pre_map_defs live_nesting_map_ident0s
abs_inverses dtor_map_o_corec)
|> Thm.close_derivation)
map_o_corec_goals corec_defs xtor_co_rec_o_maps;
in
map single map_o_corec_thms
end;
fun derive_note_coinduct_corecs_thms_for_types
((((map_thmss, map_disc_iffss, map_selsss, rel_injectss, rel_distinctss, rel_selss,
rel_intross, rel_casess, pred_injectss, set_thmss, set_selsssss, set_introsssss,
set_casess, ctr_transferss, case_transferss, disc_transferss, sel_transferss),
(_, _, ctor_iff_dtors, ctr_defss, ctr_sugars)),
(corecs, corec_defs)), lthy) =
let
val (([(coinduct_thms, coinduct_thm), (coinduct_strong_thms, coinduct_strong_thm)],
(coinduct_attrs, common_coinduct_attrs)),
corec_thmss, corec_disc_thmss,
(corec_disc_iff_thmss, corec_disc_iff_attrs), (corec_sel_thmsss, corec_sel_attrs)) =
derive_coinduct_corecs_thms_for_types pre_bnfs (the corecs_args_types) xtor_co_induct
dtor_injects dtor_ctors xtor_co_rec_thms live_nesting_bnfs fpTs Cs Xs ctrXs_Tsss kss mss
ns abs_inverses abs_inverses I ctr_defss ctr_sugars corecs corec_defs lthy;
fun distinct_prems ctxt thm =
Goal.prove (*no sorry*) ctxt [] []
(thm |> Thm.prop_of |> Logic.strip_horn |>> distinct (op aconv) |> Logic.list_implies)
(fn _ => HEADGOAL (cut_tac thm THEN' assume_tac ctxt) THEN ALLGOALS eq_assume_tac);
fun eq_ifIN _ [thm] = thm
| eq_ifIN ctxt (thm :: thms) =
distinct_prems ctxt (@{thm eq_ifI} OF
(map (unfold_thms ctxt @{thms atomize_imp[of _ "t = u" for t u]})
[thm, eq_ifIN ctxt thms]));
val corec_code_thms = map (eq_ifIN lthy) corec_thmss;
val corec_sel_thmss = map flat corec_sel_thmsss;
val coinduct_type_attr = Attrib.internal o K o Induct.coinduct_type;
val coinduct_pred_attr = Attrib.internal o K o Induct.coinduct_pred;
val flat_corec_thms = append oo append;
val corec_transfer_thmss = map single (derive_corec_transfer_thms lthy corecs corec_defs);
val ((rel_coinduct_thmss, common_rel_coinduct_thms),
(rel_coinduct_attrs, common_rel_coinduct_attrs)) =
if live = 0 then
((replicate nn [], []), ([], []))
else
let
val ((rel_coinduct_thms, common_rel_coinduct_thm),
(rel_coinduct_attrs, common_rel_coinduct_attrs)) =
derive_rel_coinduct_thms_for_types lthy nn fpTs ns As Bs mss ctr_sugars abs_inverses
abs_injects ctor_injects dtor_ctors pre_rel_defs ctr_defss xtor_rel_co_induct
live_nesting_rel_eqs;
in
((map single rel_coinduct_thms, single common_rel_coinduct_thm),
(rel_coinduct_attrs, common_rel_coinduct_attrs))
end;
val map_o_corec_thmss = derive_map_o_corec_thmss lthy lthy corecs corec_defs;
val (set_induct_thms, set_induct_attrss) =
derive_set_induct_thms_for_types lthy nn fpTs (map #ctrs ctr_sugars)
(map (map (mk_set As)) (map sets_of_bnf fp_bnfs)) dtor_set_inducts
(map #exhaust ctr_sugars) (flat pre_set_defss) (flat ctr_defss) dtor_ctors abs_inverses
|> split_list;
val simp_thmss =
@{map 6} mk_simp_thms ctr_sugars
(@{map 3} flat_corec_thms corec_disc_thmss corec_disc_iff_thmss corec_sel_thmss)
map_thmss rel_injectss rel_distinctss set_thmss;
val common_notes =
(set_inductN, set_induct_thms, nth set_induct_attrss) ::
(if nn > 1 then
[(coinductN, [coinduct_thm], K common_coinduct_attrs),
(coinduct_strongN, [coinduct_strong_thm], K common_coinduct_attrs),
(rel_coinductN, common_rel_coinduct_thms, K common_rel_coinduct_attrs)]
else [])
|> massage_simple_notes fp_common_name;
val notes =
[(coinductN, map single coinduct_thms,
fn T_name => coinduct_attrs @ [coinduct_type_attr T_name]),
(coinduct_strongN, map single coinduct_strong_thms, K coinduct_attrs),
(corecN, corec_thmss, K []),
(corec_codeN, map single corec_code_thms, K (code_attrs @ nitpicksimp_attrs)),
(corec_discN, corec_disc_thmss, K []),
(corec_disc_iffN, corec_disc_iff_thmss, K corec_disc_iff_attrs),
(corec_selN, corec_sel_thmss, K corec_sel_attrs),
(corec_transferN, corec_transfer_thmss, K []),
(map_o_corecN, map_o_corec_thmss, K []),
(rel_coinductN, rel_coinduct_thmss, K (rel_coinduct_attrs @ [coinduct_pred_attr ""])),
(simpsN, simp_thmss, K [])]
|> massage_multi_notes fp_b_names fpTs;
in
lthy
|> fold (curry (Spec_Rules.add Spec_Rules.Equational) corecs)
[flat corec_sel_thmss, flat corec_thmss]
|> Local_Theory.notes (common_notes @ notes)
|-> interpret_bnfs_register_fp_sugars plugins fpTs fpBTs Xs Greatest_FP pre_bnfs absT_infos
fp_nesting_bnfs live_nesting_bnfs fp_res ctrXs_Tsss ctor_iff_dtors ctr_defss ctr_sugars
corecs corec_defs map_thmss [coinduct_thm, coinduct_strong_thm]
(transpose [coinduct_thms, coinduct_strong_thms]) corec_thmss corec_disc_thmss
corec_sel_thmsss rel_injectss rel_distinctss map_disc_iffss map_selsss rel_selss
rel_intross rel_casess pred_injectss set_thmss set_selsssss set_introsssss set_casess
ctr_transferss case_transferss disc_transferss corec_disc_iff_thmss
(map single corec_code_thms) corec_transfer_thmss common_rel_coinduct_thms
rel_coinduct_thmss set_induct_thms (replicate nn (if nn = 1 then set_induct_thms else []))
sel_transferss map_o_corec_thmss
end;
val lthy = lthy
|> live > 0 ? fold2 (fn Type (s, _) => fn bnf => register_bnf_raw s bnf) fpTs fp_bnfs
|> @{fold_map 29} define_ctrs_dtrs_for_type_etc fp_bnfs fp_bs fpTs Cs Es ctors dtors
xtor_co_recs ctor_dtors dtor_ctors ctor_injects pre_map_defs pre_set_defss pre_rel_defs
xtor_maps xtor_setss xtor_rels ns kss mss abss abs_injects type_definitions ctr_bindingss
ctr_mixfixess ctr_Tsss disc_bindingss sel_bindingsss raw_sel_default_eqss
|> wrap_ctrs_derive_map_set_rel_pred_thms_define_co_rec_for_types
|> case_fp fp derive_note_induct_recs_thms_for_types
derive_note_coinduct_corecs_thms_for_types;
val timer = time (timer ("Constructors, discriminators, selectors, etc., for the new " ^
co_prefix fp ^ "datatype"));
in
lthy
end;
fun co_datatypes fp = define_co_datatypes (K I) (K I) (K I) (K I) fp;
fun co_datatype_cmd fp construct_fp options lthy =
define_co_datatypes Plugin_Name.make_filter Typedecl.read_constraint Syntax.parse_typ
Syntax.parse_term fp construct_fp options lthy
handle EMPTY_DATATYPE s => error ("Cannot define empty datatype " ^ quote s);
val parse_ctr_arg =
@{keyword "("} |-- parse_binding_colon -- Parse.typ --| @{keyword ")"}
|| Parse.typ >> pair Binding.empty;
val parse_ctr_specs =
Parse.enum1 "|" (parse_ctr_spec Parse.binding parse_ctr_arg -- Parse.opt_mixfix);
val parse_spec =
parse_type_args_named_constrained -- Parse.binding -- Parse.opt_mixfix --
(@{keyword "="} |-- parse_ctr_specs) -- parse_map_rel_pred_bindings -- parse_sel_default_eqs;
val parse_co_datatype = parse_ctr_options -- Parse.and_list1 parse_spec;
fun parse_co_datatype_cmd fp construct_fp =
parse_co_datatype >> co_datatype_cmd fp construct_fp;
end;