--- a/src/HOL/BNF/Tools/bnf_fp_rec_sugar_tactics.ML Thu Sep 26 01:05:32 2013 +0200
+++ b/src/HOL/BNF/Tools/bnf_fp_rec_sugar_tactics.ML Thu Sep 26 02:09:52 2013 +0200
@@ -7,9 +7,10 @@
signature BNF_FP_REC_SUGAR_TACTICS =
sig
- val mk_primcorec_assumption_tac: Proof.context -> tactic
+ val mk_primcorec_assumption_tac: Proof.context -> thm list -> tactic
val mk_primcorec_code_tac: thm list -> thm list -> thm -> thm list -> tactic
- val mk_primcorec_code_of_ctr_tac: Proof.context -> thm list -> int list -> thm list -> tactic
+ val mk_primcorec_code_of_ctr_tac: Proof.context -> thm list -> thm list -> thm list -> thm list ->
+ thm list -> int list -> thm list -> tactic
val mk_primcorec_ctr_of_dtr_tac: Proof.context -> int -> thm -> thm option -> thm list -> tactic
val mk_primcorec_disc_tac: Proof.context -> thm list -> thm -> int -> int -> thm list list list ->
tactic
@@ -34,8 +35,12 @@
unfold_thms_tac ctxt (@{thms id_def split o_def fst_conv snd_conv} @ map_comps @ map_idents) THEN
HEADGOAL (rtac refl);
-fun mk_primcorec_assumption_tac ctxt =
- HEADGOAL (blast_tac (put_claset (claset_of @{theory_context HOL}) ctxt));
+fun mk_primcorec_assumption_tac ctxt discIs =
+ HEADGOAL (SELECT_GOAL (unfold_thms_tac ctxt
+ @{thms not_not not_False_eq_True de_Morgan_conj de_Morgan_disj} THEN
+ SOLVE (HEADGOAL (REPEAT o (rtac refl ORELSE' atac ORELSE'
+ resolve_tac @{thms TrueI conjI disjI1 disjI2} ORELSE'
+ dresolve_tac discIs THEN' atac)))));
fun mk_primcorec_same_case_tac m =
HEADGOAL (if m = 0 then rtac TrueI
@@ -43,7 +48,7 @@
fun mk_primcorec_different_case_tac ctxt excl =
unfold_thms_tac ctxt @{thms not_not not_False_eq_True} THEN
- HEADGOAL (rtac excl THEN_ALL_NEW SELECT_GOAL (mk_primcorec_assumption_tac ctxt));
+ HEADGOAL (rtac excl THEN_ALL_NEW SELECT_GOAL (mk_primcorec_assumption_tac ctxt []));
fun mk_primcorec_cases_tac ctxt k m exclsss =
let val n = length exclsss in
@@ -74,14 +79,24 @@
(the_default (K all_tac) (Option.map rtac maybe_disc_f)) THEN' REPEAT_DETERM_N m o atac) THEN
unfold_thms_tac ctxt sel_fs THEN HEADGOAL (rtac refl);
-fun mk_primcorec_code_of_ctr_case_tac ctxt splits m f_ctr =
+fun mk_primcorec_split distincts discIs collapses splits split_asms =
+ HEADGOAL (SELECT_GOAL (HEADGOAL (REPEAT_DETERM o (rtac refl ORELSE' atac ORELSE'
+ eresolve_tac (@{thms not_TrueE FalseE} @ map (fn thm => thm RS trans) collapses) ORELSE'
+ resolve_tac split_connectI ORELSE'
+ Splitter.split_asm_tac (split_if_asm :: split_asms) ORELSE'
+ Splitter.split_tac (split_if :: splits) ORELSE'
+ eresolve_tac (map (fn thm => thm RS @{thm neq_eq_eq_contradict}) distincts) THEN' atac ORELSE'
+ (TRY o dresolve_tac discIs) THEN' etac notE THEN' atac))));
+
+fun mk_primcorec_code_of_ctr_single_tac ctxt distincts discIs collapses splits split_asms m f_ctr =
HEADGOAL (REPEAT o (resolve_tac split_connectI ORELSE' split_tac (split_if :: splits))) THEN
mk_primcorec_prelude ctxt [] (f_ctr RS trans) THEN
- REPEAT_DETERM_N m (mk_primcorec_assumption_tac ctxt) THEN
- HEADGOAL (rtac refl);
+ REPEAT_DETERM_N m (mk_primcorec_assumption_tac ctxt discIs) THEN
+ mk_primcorec_split distincts discIs collapses splits split_asms;
-fun mk_primcorec_code_of_ctr_tac ctxt eq_caseIs ms ctr_thms =
- EVERY (map2 (mk_primcorec_code_of_ctr_case_tac ctxt eq_caseIs) ms ctr_thms);
+fun mk_primcorec_code_of_ctr_tac ctxt distincs discIs collapses splits split_asms ms ctr_thms =
+ EVERY (map2 (mk_primcorec_code_of_ctr_single_tac ctxt distincs discIs collapses splits split_asms)
+ ms ctr_thms);
fun mk_primcorec_code_tac eq_caseIs disc_excludes raw collapses =
HEADGOAL (rtac raw ORELSE' rtac (raw RS trans) THEN' REPEAT o