1.1 --- a/src/HOL/Codatatype/Tools/bnf_fp_sugar_tactics.ML	Sat Sep 08 21:04:26 2012 +0200
     1.2 +++ b/src/HOL/Codatatype/Tools/bnf_fp_sugar_tactics.ML	Sat Sep 08 21:04:26 2012 +0200
     1.3 @@ -13,6 +13,7 @@
     1.4      -> tactic
     1.5    val mk_half_distinct_tac: Proof.context -> thm -> thm list -> tactic
     1.6    val mk_inject_tac: Proof.context -> thm -> thm -> tactic
     1.7 +  val mk_iter_or_rec_tac: thm list -> thm list -> thm -> thm -> Proof.context -> tactic
     1.8  end;
     1.9  
    1.10  structure BNF_FP_Sugar_Tactics : BNF_FP_SUGAR_TACTICS =
    1.11 @@ -48,4 +49,11 @@
    1.12    Local_Defs.unfold_tac ctxt [ctr_def] THEN rtac (fld_inject RS ssubst) 1 THEN
    1.13    Local_Defs.unfold_tac ctxt @{thms sum.inject Pair_eq conj_assoc} THEN rtac refl 1;
    1.14  
    1.15 +val iter_or_rec_thms =
    1.16 +  @{thms sum_map.simps sum.simps(5,6) convol_def case_unit map_pair_def split_conv id_def};
    1.17 +
    1.18 +fun mk_iter_or_rec_tac iter_or_rec_defs fld_iter_or_recs ctr_def bnf_map_def ctxt =
    1.19 +  Local_Defs.unfold_tac ctxt (ctr_def :: bnf_map_def :: iter_or_rec_defs @ fld_iter_or_recs) THEN
    1.20 +  Local_Defs.unfold_tac ctxt iter_or_rec_thms THEN rtac refl 1;
    1.21 +
    1.22  end;