author  wenzelm 
Fri, 08 Jan 2021 22:30:32 +0100  
changeset 73110  c87ca43ebd3b 
parent 69593  3dda49e08b9d 
child 74301  ffe269e74bdd 
permissions  rwrr 
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(* Title: FOLP/simpdata.ML 
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Author: Lawrence C Paulson, Cambridge University Computer Laboratory 
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Copyright 1991 University of Cambridge 
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Simplification data for FOLP. 
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*) 
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fun make_iff_T th = th RS @{thm P_Imp_P_iff_T}; 
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val refl_iff_T = make_iff_T @{thm refl}; 
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val norm_thms = [(@{thm norm_eq} RS @{thm sym}, @{thm norm_eq}), 
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(@{thm NORM_iff} RS @{thm iff_sym}, @{thm NORM_iff})]; 

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(* Conversion into rewrite rules *) 

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fun mk_eq th = case Thm.concl_of th of 
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_ $ (Const (\<^const_name>\<open>iff\<close>, _) $ _ $ _) $ _ => th 
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 _ $ (Const (\<^const_name>\<open>eq\<close>, _) $ _ $ _) $ _ => th 

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 _ $ (Const (\<^const_name>\<open>Not\<close>, _) $ _) $ _ => th RS @{thm not_P_imp_P_iff_F} 

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 _ => make_iff_T th; 
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val mksimps_pairs = 

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[(\<^const_name>\<open>imp\<close>, [@{thm mp}]), 
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(\<^const_name>\<open>conj\<close>, [@{thm conjunct1}, @{thm conjunct2}]), 

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(\<^const_name>\<open>All\<close>, [@{thm spec}]), 

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(\<^const_name>\<open>True\<close>, []), 

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(\<^const_name>\<open>False\<close>, [])]; 

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fun mk_atomize pairs = 
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let fun atoms th = 

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(case Thm.concl_of th of 
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Const ("Trueprop", _) $ p => 
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(case head_of p of 
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Const(a,_) => 

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(case AList.lookup (op =) pairs a of 
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SOME(rls) => maps atoms ([th] RL rls) 
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 NONE => [th]) 
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 _ => [th]) 
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 _ => [th]) 

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in atoms end; 

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fun mk_rew_rules th = map mk_eq (mk_atomize mksimps_pairs th); 

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(*destruct function for analysing equations*) 

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fun dest_red(_ $ (red $ lhs $ rhs) $ _) = (red,lhs,rhs) 

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 dest_red t = raise TERM("dest_red", [t]); 
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structure FOLP_SimpData : SIMP_DATA = 

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struct 
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val refl_thms = [@{thm refl}, @{thm iff_refl}] 

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val trans_thms = [@{thm trans}, @{thm iff_trans}] 

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val red1 = @{thm iffD1} 

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val red2 = @{thm iffD2} 

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val mk_rew_rules = mk_rew_rules 
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val case_splits = [] (*NO IF'S!*) 

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val norm_thms = norm_thms 

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val subst_thms = [@{thm subst}]; 
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val dest_red = dest_red 
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end; 
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structure FOLP_Simp = SimpFun(FOLP_SimpData); 

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(*not a component of SIMP_DATA, but an argument of SIMP_TAC *) 

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val FOLP_congs = 
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[@{thm all_cong}, @{thm ex_cong}, @{thm eq_cong}, 
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@{thm conj_cong}, @{thm disj_cong}, @{thm imp_cong}, 

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@{thm iff_cong}, @{thm not_cong}] @ @{thms pred_congs}; 

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val IFOLP_rews = 

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[refl_iff_T] @ @{thms conj_rews} @ @{thms disj_rews} @ @{thms not_rews} @ 
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@{thms imp_rews} @ @{thms iff_rews} @ @{thms quant_rews}; 

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1009
eb7c50688405
No longer builds the induction structure (from ../Provers/ind.ML)
lcp
parents:
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diff
changeset

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open FOLP_Simp; 
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val auto_ss = empty_ss setauto (fn ctxt => ares_tac ctxt @{thms TrueI}); 
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val IFOLP_ss = auto_ss addcongs FOLP_congs > fold (addrew \<^context>) IFOLP_rews; 
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val FOLP_rews = IFOLP_rews @ @{thms cla_rews}; 
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val FOLP_ss = auto_ss addcongs FOLP_congs > fold (addrew \<^context>) FOLP_rews; 