src/HOLCF/IOA/NTP/Correctness.ML

                @ impl_ioas;
 
 val impl_asigs = [Sender.sender_asig_def,Receiver.receiver_asig_def,
                   Abschannel.srch_asig_def,Abschannel.rsch_asig_def];
 
-(* Two simpsets: - !simpset is basic, ss' unfolds hom_ioas *)
+(* Two simpsets: - simpset() is basic, ss' unfolds hom_ioas *)
 
 Delsimps [split_paired_All];
 
-val ss' = (!simpset addsimps hom_ioas);
+val ss' = (simpset() addsimps hom_ioas);
 
 
 (* A lemma about restricting the action signature of the implementation
  * to that of the specification.
  ****************************)

 \   | R_ack(b) => False    \
 \   | C_m_s => False          \
 \   | C_m_r => False          \
 \   | C_r_s => False          \
 \   | C_r_r(m) => False)";
- by (simp_tac (!simpset addsimps ([externals_def, restrict_def,
+ by (simp_tac (simpset() addsimps ([externals_def, restrict_def,
                             restrict_asig_def, Spec.sig_def]
                             @asig_projections)) 1);
 
   by (Action.action.induct_tac "a" 1);
-  by (ALLGOALS(simp_tac (!simpset addsimps [actions_def]@asig_projections)));
+  by (ALLGOALS(simp_tac (simpset() addsimps [actions_def]@asig_projections)));
  (* 2 *)
-  by (simp_tac (!simpset addsimps impl_ioas) 1);
-  by (simp_tac (!simpset addsimps impl_asigs) 1);
-  by (simp_tac (!simpset addsimps 
+  by (simp_tac (simpset() addsimps impl_ioas) 1);
+  by (simp_tac (simpset() addsimps impl_asigs) 1);
+  by (simp_tac (simpset() addsimps 
              [asig_of_par, asig_comp_def]@asig_projections) 1);
   by (simp_tac rename_ss 1); 
  (* 1 *)
-  by (simp_tac (!simpset addsimps impl_ioas) 1);
-  by (simp_tac (!simpset addsimps impl_asigs) 1);
-  by (simp_tac (!simpset addsimps 
+  by (simp_tac (simpset() addsimps impl_ioas) 1);
+  by (simp_tac (simpset() addsimps impl_asigs) 1);
+  by (simp_tac (simpset() addsimps 
              [asig_of_par, asig_comp_def]@asig_projections) 1);
 qed "externals_lemma"; 
 
 
 val sels = [Sender.sbit_def, Sender.sq_def, Sender.ssending_def,

 
 
 (* Proof of correctness *)
 goalw Correctness.thy [Spec.ioa_def, is_weak_ref_map_def]
   "is_weak_ref_map hom (restrict impl_ioa (externals spec_sig)) spec_ioa";
-by (simp_tac (!simpset addsimps 
+by (simp_tac (simpset() addsimps 
     [Correctness.hom_def, cancel_restrict, externals_lemma]) 1);
 by (rtac conjI 1);
 by (simp_tac ss' 1);
-by (asm_simp_tac (!simpset addsimps sels) 1);
+by (asm_simp_tac (simpset() addsimps sels) 1);
 by (REPEAT(rtac allI 1));
 by (rtac imp_conj_lemma 1);   (* from lemmas.ML *)
 
 by (Action.action.induct_tac "a"  1);
 by (asm_simp_tac (ss' setloop (split_tac [expand_if])) 1);
 by (forward_tac [inv4] 1);
-by (fast_tac (!claset addss (!simpset addsimps [neq_Nil_conv])) 1);
+by (fast_tac (claset() addss (simpset() addsimps [neq_Nil_conv])) 1);
 by (simp_tac ss' 1);
 by (simp_tac ss' 1);
 by (simp_tac ss' 1);
 by (simp_tac ss' 1);
 by (simp_tac ss' 1);

 by (asm_simp_tac ss' 1);
 by (forward_tac [inv4] 1);
 by (forward_tac [inv2] 1);
 by (etac disjE 1);
 by (Asm_simp_tac 1);
-by (fast_tac (!claset addss (!simpset addsimps [neq_Nil_conv])) 1);
+by (fast_tac (claset() addss (simpset() addsimps [neq_Nil_conv])) 1);
 
 by (asm_simp_tac ss' 1);
 by (forward_tac [inv2] 1);
 by (etac disjE 1);
 
 by (forward_tac [inv3] 1);
 by (case_tac "sq(sen(s))=[]" 1);
 
 by (asm_full_simp_tac ss' 1);
-by (fast_tac (!claset addSDs [add_leD1 RS leD]) 1);
+by (fast_tac (claset() addSDs [add_leD1 RS leD]) 1);
 
 by (case_tac "m = hd(sq(sen(s)))" 1);
 
-by (fast_tac (!claset addss (!simpset addsimps [neq_Nil_conv])) 1);
+by (fast_tac (claset() addss (simpset() addsimps [neq_Nil_conv])) 1);
 
 by (Asm_full_simp_tac 1);
-by (fast_tac (!claset addSDs [add_leD1 RS leD]) 1);
+by (fast_tac (claset() addSDs [add_leD1 RS leD]) 1);
 
 by (Asm_full_simp_tac 1);
 qed"ntp_correct";