1.1 --- a/src/HOL/Codatatype/Tools/bnf_fp_sugar_tactics.ML	Tue Sep 04 14:21:11 2012 +0200
     1.2 +++ b/src/HOL/Codatatype/Tools/bnf_fp_sugar_tactics.ML	Tue Sep 04 15:51:32 2012 +0200
     1.3 @@ -7,6 +7,7 @@
     1.4  
     1.5  signature BNF_FP_SUGAR_TACTICS =
     1.6  sig
     1.7 +  val mk_exhaust_tac: Proof.context -> int -> int list -> thm list -> thm -> thm -> tactic
     1.8    val mk_fld_iff_unf_tac: Proof.context -> ctyp option list -> cterm -> cterm -> thm -> thm
     1.9      -> tactic
    1.10  end;
    1.11 @@ -14,8 +15,17 @@
    1.12  structure BNF_FP_Sugar_Tactics : BNF_FP_SUGAR_TACTICS =
    1.13  struct
    1.14  
    1.15 +open BNF_Tactics
    1.16  open BNF_Util
    1.17  
    1.18 +fun mk_exhaust_tac ctxt n ms ctr_defs fld_iff_unf sumEN' =
    1.19 +  Local_Defs.unfold_tac ctxt (fld_iff_unf :: ctr_defs) THEN
    1.20 +  rtac sumEN' 1 THEN
    1.21 +  Local_Defs.unfold_tac ctxt @{thms all_prod_eq} THEN
    1.22 +  EVERY' (map2 (fn k => fn m =>
    1.23 +     select_prem_tac n (REPEAT_DETERM_N m o dtac @{thm meta_spec} THEN' etac @{thm meta_mp}) k THEN'
    1.24 +     atac) (1 upto n) ms) 1;
    1.25 +
    1.26  fun mk_fld_iff_unf_tac ctxt cTs cfld cunf fld_unf unf_fld =
    1.27    (rtac iffI THEN'
    1.28     EVERY' (map3 (fn cTs => fn cx => fn th =>