author | nipkow |
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changeset 71033 | c1b63124245c |
parent 70494 | 41108e3e9ca5 |
child 74245 | 282cd3aa6cc6 |
permissions | -rw-r--r-- |
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(* Title: HOL/Tools/Function/function_core.ML |
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Author: Alexander Krauss, TU Muenchen |
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Core of the function package. |
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*) |
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signature FUNCTION_CORE = |
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sig |
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val trace: bool Unsynchronized.ref |
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val prepare_function : Function_Common.function_config |
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-> binding (* defname *) |
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-> ((binding * typ) * mixfix) list (* defined symbol *) |
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-> ((string * typ) list * term list * term * term) list (* specification *) |
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-> local_theory |
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-> (term (* f *) |
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* thm (* goalstate *) |
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* (Proof.context -> thm -> Function_Common.function_result) (* continuation *) |
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) * local_theory |
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end |
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structure Function_Core : FUNCTION_CORE = |
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struct |
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val trace = Unsynchronized.ref false |
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fun trace_msg msg = if ! trace then tracing (msg ()) else () |
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val boolT = HOLogic.boolT |
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val mk_eq = HOLogic.mk_eq |
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open Function_Lib |
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open Function_Common |
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datatype globals = Globals of |
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{fvar: term, |
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domT: typ, |
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ranT: typ, |
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h: term, |
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y: term, |
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x: term, |
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z: term, |
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a: term, |
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P: term, |
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D: term, |
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Pbool:term} |
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datatype rec_call_info = RCInfo of |
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{RIvs: (string * typ) list, (* Call context: fixes and assumes *) |
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CCas: thm list, |
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rcarg: term, (* The recursive argument *) |
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llRI: thm, |
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h_assum: term} |
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datatype clause_context = ClauseContext of |
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{ctxt : Proof.context, |
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qs : term list, |
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gs : term list, |
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lhs: term, |
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rhs: term, |
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cqs: cterm list, |
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ags: thm list, |
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case_hyp : thm} |
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fun transfer_clause_ctx thy (ClauseContext { ctxt, qs, gs, lhs, rhs, cqs, ags, case_hyp }) = |
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ClauseContext { ctxt = Proof_Context.transfer thy ctxt, |
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qs = qs, gs = gs, lhs = lhs, rhs = rhs, cqs = cqs, ags = ags, case_hyp = case_hyp } |
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datatype clause_info = ClauseInfo of |
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{no: int, |
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qglr : ((string * typ) list * term list * term * term), |
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cdata : clause_context, |
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tree: Function_Context_Tree.ctx_tree, |
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lGI: thm, |
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RCs: rec_call_info list} |
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(* Theory dependencies. *) |
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val acc_induct_rule = @{thm accp_induct_rule} |
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val ex1_implies_ex = @{thm Fun_Def.fundef_ex1_existence} |
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val ex1_implies_un = @{thm Fun_Def.fundef_ex1_uniqueness} |
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val ex1_implies_iff = @{thm Fun_Def.fundef_ex1_iff} |
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val acc_downward = @{thm accp_downward} |
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val accI = @{thm accp.accI} |
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fun find_calls tree = |
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let |
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fun add_Ri (fixes,assumes) (_ $ arg) _ (_, xs) = |
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([], (fixes, assumes, arg) :: xs) |
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| add_Ri _ _ _ _ = raise Match |
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in |
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rev (Function_Context_Tree.traverse_tree add_Ri tree []) |
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end |
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(** building proof obligations *) |
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fun mk_compat_proof_obligations domT ranT fvar f glrs = |
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let |
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fun mk_impl ((qs, gs, lhs, rhs),(qs', gs', lhs', rhs')) = |
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let |
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val shift = incr_boundvars (length qs') |
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in |
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Logic.mk_implies |
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(HOLogic.mk_Trueprop (HOLogic.eq_const domT $ shift lhs $ lhs'), |
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HOLogic.mk_Trueprop (HOLogic.eq_const ranT $ shift rhs $ rhs')) |
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|> fold_rev (curry Logic.mk_implies) (map shift gs @ gs') |
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|> fold_rev (fn (n,T) => fn b => Logic.all_const T $ Abs(n,T,b)) (qs @ qs') |
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|> curry abstract_over fvar |
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|> curry subst_bound f |
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end |
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in |
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map mk_impl (unordered_pairs glrs) |
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end |
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fun mk_completeness (Globals {x, Pbool, ...}) clauses qglrs = |
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let |
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fun mk_case (ClauseContext {qs, gs, lhs, ...}, (oqs, _, _, _)) = |
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HOLogic.mk_Trueprop Pbool |
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|> curry Logic.mk_implies (HOLogic.mk_Trueprop (mk_eq (x, lhs))) |
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|> fold_rev (curry Logic.mk_implies) gs |
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|> fold_rev mk_forall_rename (map fst oqs ~~ qs) |
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in |
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HOLogic.mk_Trueprop Pbool |
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|> fold_rev (curry Logic.mk_implies o mk_case) (clauses ~~ qglrs) |
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|> mk_forall_rename ("x", x) |
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|> mk_forall_rename ("P", Pbool) |
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end |
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(** making a context with it's own local bindings **) |
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|
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fun mk_clause_context x ctxt (pre_qs,pre_gs,pre_lhs,pre_rhs) = |
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let |
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val (qs, ctxt') = Variable.variant_fixes (map fst pre_qs) ctxt |
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|>> map2 (fn (_, T) => fn n => Free (n, T)) pre_qs |
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|
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fun inst t = subst_bounds (rev qs, t) |
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val gs = map inst pre_gs |
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val lhs = inst pre_lhs |
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val rhs = inst pre_rhs |
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|
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val cqs = map (Thm.cterm_of ctxt') qs |
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val ags = map (Thm.assume o Thm.cterm_of ctxt') gs |
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|
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val case_hyp = |
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Thm.assume (Thm.cterm_of ctxt' (HOLogic.mk_Trueprop (mk_eq (x, lhs)))) |
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in |
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ClauseContext { ctxt = ctxt', qs = qs, gs = gs, lhs = lhs, rhs = rhs, |
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cqs = cqs, ags = ags, case_hyp = case_hyp } |
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end |
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|
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(* lowlevel term function. FIXME: remove *) |
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fun abstract_over_list vs body = |
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let |
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fun abs lev v tm = |
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if v aconv tm then Bound lev |
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else |
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(case tm of |
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Abs (a, T, t) => Abs (a, T, abs (lev + 1) v t) |
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| t $ u => abs lev v t $ abs lev v u |
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| t => t) |
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in |
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fold_index (fn (i, v) => fn t => abs i v t) vs body |
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end |
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|
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|
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|
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fun mk_clause_info globals G f no cdata qglr tree RCs GIntro_thm RIntro_thms = |
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let |
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val Globals {h, ...} = globals |
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|
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val ClauseContext { ctxt, qs, cqs, ags, ... } = cdata |
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|
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(* Instantiate the GIntro thm with "f" and import into the clause context. *) |
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val lGI = GIntro_thm |
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|> Thm.forall_elim (Thm.cterm_of ctxt f) |
36945 | 184 |
|> fold Thm.forall_elim cqs |
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|> fold Thm.elim_implies ags |
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|
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fun mk_call_info (rcfix, rcassm, rcarg) RI = |
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let |
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val llRI = RI |
36945 | 190 |
|> fold Thm.forall_elim cqs |
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|> fold (Thm.forall_elim o Thm.cterm_of ctxt o Free) rcfix |
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|> fold Thm.elim_implies ags |
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|> fold Thm.elim_implies rcassm |
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|
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val h_assum = |
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HOLogic.mk_Trueprop (G $ rcarg $ (h $ rcarg)) |
59582 | 197 |
|> fold_rev (curry Logic.mk_implies o Thm.prop_of) rcassm |
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|> fold_rev (Logic.all o Free) rcfix |
42361 | 199 |
|> Pattern.rewrite_term (Proof_Context.theory_of ctxt) [(f, h)] [] |
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|> abstract_over_list (rev qs) |
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in |
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RCInfo {RIvs=rcfix, rcarg=rcarg, CCas=rcassm, llRI=llRI, h_assum=h_assum} |
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203 |
end |
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|
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val RC_infos = map2 mk_call_info RCs RIntro_thms |
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in |
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ClauseInfo {no=no, cdata=cdata, qglr=qglr, lGI=lGI, RCs=RC_infos, |
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tree=tree} |
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209 |
end |
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|
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|
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fun store_compat_thms 0 thms = [] |
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| store_compat_thms n thms = |
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let |
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val (thms1, thms2) = chop n thms |
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216 |
in |
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(thms1 :: store_compat_thms (n - 1) thms2) |
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218 |
end |
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|
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(* expects i <= j *) |
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fun lookup_compat_thm i j cts = |
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nth (nth cts (i - 1)) (j - i) |
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|
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(* Returns "Gsi, Gsj, lhs_i = lhs_j |-- rhs_j_f = rhs_i_f" *) |
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(* if j < i, then turn around *) |
59627 | 226 |
fun get_compat_thm ctxt cts i j ctxi ctxj = |
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let |
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val ClauseContext {cqs=cqsi,ags=agsi,lhs=lhsi,...} = ctxi |
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val ClauseContext {cqs=cqsj,ags=agsj,lhs=lhsj,...} = ctxj |
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|
59627 | 231 |
val lhsi_eq_lhsj = Thm.cterm_of ctxt (HOLogic.mk_Trueprop (mk_eq (lhsi, lhsj))) |
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in if j < i then |
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let |
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val compat = lookup_compat_thm j i cts |
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235 |
in |
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236 |
compat (* "!!qj qi. Gsj => Gsi => lhsj = lhsi ==> rhsj = rhsi" *) |
36945 | 237 |
|> fold Thm.forall_elim (cqsj @ cqsi) (* "Gsj => Gsi => lhsj = lhsi ==> rhsj = rhsi" *) |
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|> fold Thm.elim_implies agsj |
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239 |
|> fold Thm.elim_implies agsi |
36945 | 240 |
|> Thm.elim_implies ((Thm.assume lhsi_eq_lhsj) RS sym) (* "Gsj, Gsi, lhsi = lhsj |-- rhsj = rhsi" *) |
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241 |
end |
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242 |
else |
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243 |
let |
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val compat = lookup_compat_thm i j cts |
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245 |
in |
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compat (* "!!qi qj. Gsi => Gsj => lhsi = lhsj ==> rhsi = rhsj" *) |
36945 | 247 |
|> fold Thm.forall_elim (cqsi @ cqsj) (* "Gsi => Gsj => lhsi = lhsj ==> rhsi = rhsj" *) |
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|> fold Thm.elim_implies agsi |
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|> fold Thm.elim_implies agsj |
36945 | 250 |
|> Thm.elim_implies (Thm.assume lhsi_eq_lhsj) |
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|> (fn thm => thm RS sym) (* "Gsi, Gsj, lhsi = lhsj |-- rhsj = rhsi" *) |
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252 |
end |
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253 |
end |
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|
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(* Generates the replacement lemma in fully quantified form. *) |
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256 |
fun mk_replacement_lemma ctxt h ih_elim clause = |
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257 |
let |
61340 | 258 |
val ClauseInfo {cdata=ClauseContext {qs, cqs, ags, case_hyp, ...}, RCs, tree, ...} = clause |
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259 |
local open Conv in |
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val ih_conv = arg1_conv o arg_conv o arg_conv |
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261 |
end |
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262 |
|
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val ih_elim_case = |
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Conv.fconv_rule (ih_conv (K (case_hyp RS eq_reflection))) ih_elim |
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|
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val Ris = map (fn RCInfo {llRI, ...} => llRI) RCs |
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val h_assums = map (fn RCInfo {h_assum, ...} => |
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268 |
Thm.assume (Thm.cterm_of ctxt (subst_bounds (rev qs, h_assum)))) RCs |
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269 |
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val (eql, _) = |
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Function_Context_Tree.rewrite_by_tree ctxt h ih_elim_case (Ris ~~ h_assums) tree |
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|
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val replace_lemma = HOLogic.mk_obj_eq eql |
59582 | 274 |
|> Thm.implies_intr (Thm.cprop_of case_hyp) |
275 |
|> fold_rev (Thm.implies_intr o Thm.cprop_of) h_assums |
|
276 |
|> fold_rev (Thm.implies_intr o Thm.cprop_of) ags |
|
36945 | 277 |
|> fold_rev Thm.forall_intr cqs |
70494 | 278 |
|> Thm.close_derivation \<^here> |
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in |
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280 |
replace_lemma |
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281 |
end |
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282 |
|
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283 |
|
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fun mk_uniqueness_clause ctxt globals compat_store clausei clausej RLj = |
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285 |
let |
59627 | 286 |
val thy = Proof_Context.theory_of ctxt |
287 |
||
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val Globals {h, y, x, fvar, ...} = globals |
59582 | 289 |
val ClauseInfo {no=i, cdata=cctxi as ClauseContext {ctxt=ctxti, lhs=lhsi, case_hyp, ...}, ...} = |
290 |
clausei |
|
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val ClauseInfo {no=j, qglr=cdescj, RCs=RCsj, ...} = clausej |
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292 |
|
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val cctxj as ClauseContext {ags = agsj', lhs = lhsj', rhs = rhsj', qs = qsj', cqs = cqsj', ...} = |
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294 |
mk_clause_context x ctxti cdescj |
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295 |
|
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val rhsj'h = Pattern.rewrite_term thy [(fvar,h)] [] rhsj' |
59627 | 297 |
val compat = get_compat_thm ctxt compat_store i j cctxi cctxj |
59582 | 298 |
val Ghsj' = |
299 |
map (fn RCInfo {h_assum, ...} => |
|
59627 | 300 |
Thm.assume (Thm.cterm_of ctxt (subst_bounds (rev qsj', h_assum)))) RCsj |
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301 |
|
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302 |
val RLj_import = RLj |
36945 | 303 |
|> fold Thm.forall_elim cqsj' |
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304 |
|> fold Thm.elim_implies agsj' |
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305 |
|> fold Thm.elim_implies Ghsj' |
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306 |
|
59627 | 307 |
val y_eq_rhsj'h = Thm.assume (Thm.cterm_of ctxt (HOLogic.mk_Trueprop (mk_eq (y, rhsj'h)))) |
308 |
val lhsi_eq_lhsj' = Thm.assume (Thm.cterm_of ctxt (HOLogic.mk_Trueprop (mk_eq (lhsi, lhsj')))) |
|
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309 |
(* lhs_i = lhs_j' |-- lhs_i = lhs_j' *) |
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310 |
in |
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311 |
(trans OF [case_hyp, lhsi_eq_lhsj']) (* lhs_i = lhs_j' |-- x = lhs_j' *) |
36945 | 312 |
|> Thm.implies_elim RLj_import |
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313 |
(* Rj1' ... Rjk', lhs_i = lhs_j' |-- rhs_j'_h = rhs_j'_f *) |
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314 |
|> (fn it => trans OF [it, compat]) |
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315 |
(* lhs_i = lhs_j', Gj', Rj1' ... Rjk' |-- rhs_j'_h = rhs_i_f *) |
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316 |
|> (fn it => trans OF [y_eq_rhsj'h, it]) |
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(* lhs_i = lhs_j', Gj', Rj1' ... Rjk', y = rhs_j_h' |-- y = rhs_i_f *) |
59582 | 318 |
|> fold_rev (Thm.implies_intr o Thm.cprop_of) Ghsj' |
319 |
|> fold_rev (Thm.implies_intr o Thm.cprop_of) agsj' |
|
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(* lhs_i = lhs_j' , y = rhs_j_h' |-- Gj', Rj1'...Rjk' ==> y = rhs_i_f *) |
59582 | 321 |
|> Thm.implies_intr (Thm.cprop_of y_eq_rhsj'h) |
322 |
|> Thm.implies_intr (Thm.cprop_of lhsi_eq_lhsj') |
|
59627 | 323 |
|> fold_rev Thm.forall_intr (Thm.cterm_of ctxt h :: cqsj') |
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324 |
end |
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325 |
|
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326 |
|
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327 |
|
59627 | 328 |
fun mk_uniqueness_case ctxt |
329 |
globals G f ihyp ih_intro G_cases compat_store clauses rep_lemmas clausei = |
|
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330 |
let |
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331 |
val thy = Proof_Context.theory_of ctxt |
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332 |
val Globals {x, y, ranT, fvar, ...} = globals |
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333 |
val ClauseInfo {cdata = ClauseContext {lhs, rhs, cqs, ags, case_hyp, ...}, lGI, RCs, ...} = clausei |
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334 |
val rhsC = Pattern.rewrite_term thy [(fvar, f)] [] rhs |
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335 |
|
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336 |
val ih_intro_case = full_simplify (put_simpset HOL_basic_ss ctxt addsimps [case_hyp]) ih_intro |
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337 |
|
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338 |
fun prep_RC (RCInfo {llRI, RIvs, CCas, ...}) = (llRI RS ih_intro_case) |
59582 | 339 |
|> fold_rev (Thm.implies_intr o Thm.cprop_of) CCas |
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|
340 |
|> fold_rev (Thm.forall_intr o Thm.cterm_of ctxt o Free) RIvs |
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341 |
|
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342 |
val existence = fold (curry op COMP o prep_RC) RCs lGI |
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343 |
|
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|
344 |
val P = Thm.cterm_of ctxt (mk_eq (y, rhsC)) |
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|
345 |
val G_lhs_y = Thm.assume (Thm.cterm_of ctxt (HOLogic.mk_Trueprop (G $ lhs $ y))) |
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|
346 |
|
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347 |
val unique_clauses = |
59627 | 348 |
map2 (mk_uniqueness_clause ctxt globals compat_store clausei) clauses rep_lemmas |
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349 |
|
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|
350 |
fun elim_implies_eta A AB = |
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351 |
Thm.bicompose (SOME ctxt) {flatten = false, match = true, incremented = false} |
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352 |
(false, A, 0) 1 AB |
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353 |
|> Seq.list_of |> the_single |
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|
354 |
|
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355 |
val uniqueness = G_cases |
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|
356 |
|> Thm.forall_elim (Thm.cterm_of ctxt lhs) |
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|
357 |
|> Thm.forall_elim (Thm.cterm_of ctxt y) |
36945 | 358 |
|> Thm.forall_elim P |
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359 |
|> Thm.elim_implies G_lhs_y |
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360 |
|> fold elim_implies_eta unique_clauses |
59582 | 361 |
|> Thm.implies_intr (Thm.cprop_of G_lhs_y) |
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|
362 |
|> Thm.forall_intr (Thm.cterm_of ctxt y) |
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|
363 |
|
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|
364 |
val P2 = Thm.cterm_of ctxt (lambda y (G $ lhs $ y)) (* P2 y := (lhs, y): G *) |
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|
365 |
|
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366 |
val exactly_one = |
59582 | 367 |
@{thm ex1I} |
60801 | 368 |
|> Thm.instantiate' |
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|
369 |
[SOME (Thm.ctyp_of ctxt ranT)] |
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|
370 |
[SOME P2, SOME (Thm.cterm_of ctxt rhsC)] |
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371 |
|> curry (op COMP) existence |
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372 |
|> curry (op COMP) uniqueness |
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373 |
|> simplify (put_simpset HOL_basic_ss ctxt addsimps [case_hyp RS sym]) |
59582 | 374 |
|> Thm.implies_intr (Thm.cprop_of case_hyp) |
375 |
|> fold_rev (Thm.implies_intr o Thm.cprop_of) ags |
|
36945 | 376 |
|> fold_rev Thm.forall_intr cqs |
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|
377 |
|
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378 |
val function_value = |
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379 |
existence |
36945 | 380 |
|> Thm.implies_intr ihyp |
59582 | 381 |
|> Thm.implies_intr (Thm.cprop_of case_hyp) |
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|
382 |
|> Thm.forall_intr (Thm.cterm_of ctxt x) |
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|
383 |
|> Thm.forall_elim (Thm.cterm_of ctxt lhs) |
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|
384 |
|> curry (op RS) refl |
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|
385 |
in |
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|
386 |
(exactly_one, function_value) |
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|
387 |
end |
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|
388 |
|
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|
389 |
|
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|
390 |
fun prove_stuff ctxt globals G f R clauses complete compat compat_store G_elim f_def = |
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|
391 |
let |
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|
392 |
val Globals {h, domT, ranT, x, ...} = globals |
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|
393 |
|
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|
394 |
(* Inductive Hypothesis: !!z. (z,x):R ==> EX!y. (z,y):G *) |
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|
395 |
val ihyp = Logic.all_const domT $ Abs ("z", domT, |
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|
396 |
Logic.mk_implies (HOLogic.mk_Trueprop (R $ Bound 0 $ x), |
67149 | 397 |
HOLogic.mk_Trueprop (Const (\<^const_name>\<open>Ex1\<close>, (ranT --> boolT) --> boolT) $ |
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|
398 |
Abs ("y", ranT, G $ Bound 1 $ Bound 0)))) |
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|
399 |
|> Thm.cterm_of ctxt |
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400 |
|
36945 | 401 |
val ihyp_thm = Thm.assume ihyp |> Thm.forall_elim_vars 0 |
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|
402 |
val ih_intro = ihyp_thm RS (f_def RS ex1_implies_ex) |
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|
403 |
val ih_elim = ihyp_thm RS (f_def RS ex1_implies_un) |
60801 | 404 |
|> Thm.instantiate' [] [NONE, SOME (Thm.cterm_of ctxt h)] |
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|
405 |
|
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|
406 |
val _ = trace_msg (K "Proving Replacement lemmas...") |
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|
407 |
val repLemmas = map (mk_replacement_lemma ctxt h ih_elim) clauses |
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|
408 |
|
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|
409 |
val _ = trace_msg (K "Proving cases for unique existence...") |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
410 |
val (ex1s, values) = |
51717
9e7d1c139569
simplifier uses proper Proof.context instead of historic type simpset;
wenzelm
parents:
49170
diff
changeset
|
411 |
split_list |
9e7d1c139569
simplifier uses proper Proof.context instead of historic type simpset;
wenzelm
parents:
49170
diff
changeset
|
412 |
(map |
9e7d1c139569
simplifier uses proper Proof.context instead of historic type simpset;
wenzelm
parents:
49170
diff
changeset
|
413 |
(mk_uniqueness_case ctxt globals G f ihyp ih_intro G_elim compat_store clauses repLemmas) |
9e7d1c139569
simplifier uses proper Proof.context instead of historic type simpset;
wenzelm
parents:
49170
diff
changeset
|
414 |
clauses) |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
415 |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
416 |
val _ = trace_msg (K "Proving: Graph is a function") |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
417 |
val graph_is_function = complete |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
418 |
|> Thm.forall_elim_vars 0 |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
419 |
|> fold (curry op COMP) ex1s |
36945 | 420 |
|> Thm.implies_intr (ihyp) |
59621
291934bac95e
Thm.cterm_of and Thm.ctyp_of operate on local context;
wenzelm
parents:
59618
diff
changeset
|
421 |
|> Thm.implies_intr (Thm.cterm_of ctxt (HOLogic.mk_Trueprop (mk_acc domT R $ x))) |
291934bac95e
Thm.cterm_of and Thm.ctyp_of operate on local context;
wenzelm
parents:
59618
diff
changeset
|
422 |
|> Thm.forall_intr (Thm.cterm_of ctxt x) |
52467 | 423 |
|> (fn it => Drule.compose (it, 2, acc_induct_rule)) (* "EX! y. (?x,y):G" *) |
59582 | 424 |
|> (fn it => |
59621
291934bac95e
Thm.cterm_of and Thm.ctyp_of operate on local context;
wenzelm
parents:
59618
diff
changeset
|
425 |
fold (Thm.forall_intr o Thm.cterm_of ctxt o Var) |
59618 | 426 |
(Term.add_vars (Thm.prop_of it) []) it) |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
427 |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
428 |
val goalstate = Conjunction.intr graph_is_function complete |
70494 | 429 |
|> Thm.close_derivation \<^here> |
52456 | 430 |
|> Goal.protect 0 |
59582 | 431 |
|> fold_rev (Thm.implies_intr o Thm.cprop_of) compat |
432 |
|> Thm.implies_intr (Thm.cprop_of complete) |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
433 |
in |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
434 |
(goalstate, values) |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
435 |
end |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
436 |
|
33348
bb65583ab70d
absorbed inductive_wrap function into Function_Core; more conventional argument order; tuned
krauss
parents:
33278
diff
changeset
|
437 |
(* wrapper -- restores quantifiers in rule specifications *) |
bb65583ab70d
absorbed inductive_wrap function into Function_Core; more conventional argument order; tuned
krauss
parents:
33278
diff
changeset
|
438 |
fun inductive_def (binding as ((R, T), _)) intrs lthy = |
bb65583ab70d
absorbed inductive_wrap function into Function_Core; more conventional argument order; tuned
krauss
parents:
33278
diff
changeset
|
439 |
let |
bb65583ab70d
absorbed inductive_wrap function into Function_Core; more conventional argument order; tuned
krauss
parents:
33278
diff
changeset
|
440 |
val ({intrs = intrs_gen, elims = [elim_gen], preds = [ Rdef ], induct, ...}, lthy) = |
bb65583ab70d
absorbed inductive_wrap function into Function_Core; more conventional argument order; tuned
krauss
parents:
33278
diff
changeset
|
441 |
lthy |
59880
30687c3f2b10
clarified role of naming for background theory: transform_binding (e.g. for "concealed" flag) uses naming of hypothetical context;
wenzelm
parents:
59859
diff
changeset
|
442 |
|> Proof_Context.concealed |
69709 | 443 |
|> Inductive.add_inductive |
33350 | 444 |
{quiet_mode = true, |
445 |
verbose = ! trace, |
|
33348
bb65583ab70d
absorbed inductive_wrap function into Function_Core; more conventional argument order; tuned
krauss
parents:
33278
diff
changeset
|
446 |
alt_name = Binding.empty, |
bb65583ab70d
absorbed inductive_wrap function into Function_Core; more conventional argument order; tuned
krauss
parents:
33278
diff
changeset
|
447 |
coind = false, |
bb65583ab70d
absorbed inductive_wrap function into Function_Core; more conventional argument order; tuned
krauss
parents:
33278
diff
changeset
|
448 |
no_elim = false, |
bb65583ab70d
absorbed inductive_wrap function into Function_Core; more conventional argument order; tuned
krauss
parents:
33278
diff
changeset
|
449 |
no_ind = false, |
49170
03bee3a6a1b7
discontinued obsolete fork_mono to loosen some brakes -- NB: TTY interaction has Goal.future_proofs disabled due to missing Future.worker_task;
wenzelm
parents:
46217
diff
changeset
|
450 |
skip_mono = true} |
33348
bb65583ab70d
absorbed inductive_wrap function into Function_Core; more conventional argument order; tuned
krauss
parents:
33278
diff
changeset
|
451 |
[binding] (* relation *) |
bb65583ab70d
absorbed inductive_wrap function into Function_Core; more conventional argument order; tuned
krauss
parents:
33278
diff
changeset
|
452 |
[] (* no parameters *) |
63352 | 453 |
(map (fn t => (Binding.empty_atts, t)) intrs) (* intro rules *) |
33348
bb65583ab70d
absorbed inductive_wrap function into Function_Core; more conventional argument order; tuned
krauss
parents:
33278
diff
changeset
|
454 |
[] (* no special monos *) |
59880
30687c3f2b10
clarified role of naming for background theory: transform_binding (e.g. for "concealed" flag) uses naming of hypothetical context;
wenzelm
parents:
59859
diff
changeset
|
455 |
||> Proof_Context.restore_naming lthy |
33348
bb65583ab70d
absorbed inductive_wrap function into Function_Core; more conventional argument order; tuned
krauss
parents:
33278
diff
changeset
|
456 |
|
bb65583ab70d
absorbed inductive_wrap function into Function_Core; more conventional argument order; tuned
krauss
parents:
33278
diff
changeset
|
457 |
fun requantify orig_intro thm = |
bb65583ab70d
absorbed inductive_wrap function into Function_Core; more conventional argument order; tuned
krauss
parents:
33278
diff
changeset
|
458 |
let |
bb65583ab70d
absorbed inductive_wrap function into Function_Core; more conventional argument order; tuned
krauss
parents:
33278
diff
changeset
|
459 |
val (qs, t) = dest_all_all orig_intro |
42483 | 460 |
val frees = Variable.add_frees lthy t [] |> remove (op =) (Binding.name_of R, T) |
59582 | 461 |
val vars = Term.add_vars (Thm.prop_of thm) [] |
33348
bb65583ab70d
absorbed inductive_wrap function into Function_Core; more conventional argument order; tuned
krauss
parents:
33278
diff
changeset
|
462 |
val varmap = AList.lookup (op =) (frees ~~ map fst vars) |
42483 | 463 |
#> the_default ("", 0) |
33348
bb65583ab70d
absorbed inductive_wrap function into Function_Core; more conventional argument order; tuned
krauss
parents:
33278
diff
changeset
|
464 |
in |
bb65583ab70d
absorbed inductive_wrap function into Function_Core; more conventional argument order; tuned
krauss
parents:
33278
diff
changeset
|
465 |
fold_rev (fn Free (n, T) => |
59621
291934bac95e
Thm.cterm_of and Thm.ctyp_of operate on local context;
wenzelm
parents:
59618
diff
changeset
|
466 |
forall_intr_rename (n, Thm.cterm_of lthy (Var (varmap (n, T), T)))) qs thm |
33348
bb65583ab70d
absorbed inductive_wrap function into Function_Core; more conventional argument order; tuned
krauss
parents:
33278
diff
changeset
|
467 |
end |
bb65583ab70d
absorbed inductive_wrap function into Function_Core; more conventional argument order; tuned
krauss
parents:
33278
diff
changeset
|
468 |
in |
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
469 |
((Rdef, map2 requantify intrs intrs_gen, forall_intr_vars elim_gen, induct), lthy) |
33348
bb65583ab70d
absorbed inductive_wrap function into Function_Core; more conventional argument order; tuned
krauss
parents:
33278
diff
changeset
|
470 |
end |
bb65583ab70d
absorbed inductive_wrap function into Function_Core; more conventional argument order; tuned
krauss
parents:
33278
diff
changeset
|
471 |
|
63004 | 472 |
fun define_graph (G_binding, G_type) fvar clauses RCss lthy = |
33349 | 473 |
let |
63004 | 474 |
val G = Free (Binding.name_of G_binding, G_type) |
33349 | 475 |
fun mk_GIntro (ClauseContext {qs, gs, lhs, rhs, ...}) RCs = |
476 |
let |
|
477 |
fun mk_h_assm (rcfix, rcassm, rcarg) = |
|
63001 | 478 |
HOLogic.mk_Trueprop (G $ rcarg $ (fvar $ rcarg)) |
59582 | 479 |
|> fold_rev (curry Logic.mk_implies o Thm.prop_of) rcassm |
33349 | 480 |
|> fold_rev (Logic.all o Free) rcfix |
481 |
in |
|
63001 | 482 |
HOLogic.mk_Trueprop (G $ lhs $ rhs) |
33349 | 483 |
|> fold_rev (curry Logic.mk_implies o mk_h_assm) RCs |
484 |
|> fold_rev (curry Logic.mk_implies) gs |
|
485 |
|> fold_rev Logic.all (fvar :: qs) |
|
486 |
end |
|
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
487 |
|
33349 | 488 |
val G_intros = map2 mk_GIntro clauses RCss |
63004 | 489 |
in inductive_def ((G_binding, G_type), NoSyn) G_intros lthy end |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
490 |
|
63004 | 491 |
fun define_function defname (fname, mixfix) domT ranT G default lthy = |
33349 | 492 |
let |
63004 | 493 |
val f_def_binding = |
494 |
Thm.make_def_binding (Config.get lthy function_internals) |
|
63005 | 495 |
(derived_name_suffix defname "_sumC") |
33349 | 496 |
val f_def = |
67149 | 497 |
Abs ("x", domT, Const (\<^const_name>\<open>Fun_Def.THE_default\<close>, ranT --> (ranT --> boolT) --> ranT) |
33349 | 498 |
$ (default $ Bound 0) $ Abs ("y", ranT, G $ Bound 1 $ Bound 0)) |
499 |
|> Syntax.check_term lthy |
|
500 |
in |
|
63005 | 501 |
lthy |> Local_Theory.define |
63011 | 502 |
((Binding.map_name (suffix "C") fname, mixfix), ((f_def_binding, []), f_def)) |
33349 | 503 |
end |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
504 |
|
63004 | 505 |
fun define_recursion_relation (R_binding, R_type) qglrs clauses RCss lthy = |
33349 | 506 |
let |
63004 | 507 |
val R = Free (Binding.name_of R_binding, R_type) |
33349 | 508 |
fun mk_RIntro (ClauseContext {qs, gs, lhs, ...}, (oqs, _, _, _)) (rcfix, rcassm, rcarg) = |
63004 | 509 |
HOLogic.mk_Trueprop (R $ rcarg $ lhs) |
59582 | 510 |
|> fold_rev (curry Logic.mk_implies o Thm.prop_of) rcassm |
33349 | 511 |
|> fold_rev (curry Logic.mk_implies) gs |
512 |
|> fold_rev (Logic.all o Free) rcfix |
|
513 |
|> fold_rev mk_forall_rename (map fst oqs ~~ qs) |
|
514 |
(* "!!qs xs. CS ==> G => (r, lhs) : R" *) |
|
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
515 |
|
33349 | 516 |
val R_intross = map2 (map o mk_RIntro) (clauses ~~ qglrs) RCss |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
517 |
|
33349 | 518 |
val ((R, RIntro_thms, R_elim, _), lthy) = |
63004 | 519 |
inductive_def ((R_binding, R_type), NoSyn) (flat R_intross) lthy |
33349 | 520 |
in |
521 |
((R, Library.unflat R_intross RIntro_thms, R_elim), lthy) |
|
522 |
end |
|
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
523 |
|
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
524 |
|
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
525 |
fun fix_globals domT ranT fvar ctxt = |
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
526 |
let |
59618 | 527 |
val ([h, y, x, z, a, D, P, Pbool], ctxt') = Variable.variant_fixes |
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
528 |
["h_fd", "y_fd", "x_fd", "z_fd", "a_fd", "D_fd", "P_fd", "Pb_fd"] ctxt |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
529 |
in |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
530 |
(Globals {h = Free (h, domT --> ranT), |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
531 |
y = Free (y, ranT), |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
532 |
x = Free (x, domT), |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
533 |
z = Free (z, domT), |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
534 |
a = Free (a, domT), |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
535 |
D = Free (D, domT --> boolT), |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
536 |
P = Free (P, domT --> boolT), |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
537 |
Pbool = Free (Pbool, boolT), |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
538 |
fvar = fvar, |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
539 |
domT = domT, |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
540 |
ranT = ranT}, |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
541 |
ctxt') |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
542 |
end |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
543 |
|
59627 | 544 |
fun inst_RC ctxt fvar f (rcfix, rcassm, rcarg) = |
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
545 |
let |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
546 |
fun inst_term t = subst_bound(f, abstract_over (fvar, t)) |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
547 |
in |
59627 | 548 |
(rcfix, map (Thm.assume o Thm.cterm_of ctxt o inst_term o Thm.prop_of) rcassm, inst_term rcarg) |
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
549 |
end |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
550 |
|
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
551 |
|
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
552 |
|
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
553 |
(********************************************************** |
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
554 |
* PROVING THE RULES |
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
555 |
**********************************************************) |
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
556 |
|
51717
9e7d1c139569
simplifier uses proper Proof.context instead of historic type simpset;
wenzelm
parents:
49170
diff
changeset
|
557 |
fun mk_psimps ctxt globals R clauses valthms f_iff graph_is_function = |
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
558 |
let |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
559 |
val Globals {domT, z, ...} = globals |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
560 |
|
59582 | 561 |
fun mk_psimp |
562 |
(ClauseInfo {qglr = (oqs, _, _, _), cdata = ClauseContext {cqs, lhs, ags, ...}, ...}) valthm = |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
563 |
let |
59618 | 564 |
val lhs_acc = |
59621
291934bac95e
Thm.cterm_of and Thm.ctyp_of operate on local context;
wenzelm
parents:
59618
diff
changeset
|
565 |
Thm.cterm_of ctxt (HOLogic.mk_Trueprop (mk_acc domT R $ lhs)) (* "acc R lhs" *) |
59618 | 566 |
val z_smaller = |
59621
291934bac95e
Thm.cterm_of and Thm.ctyp_of operate on local context;
wenzelm
parents:
59618
diff
changeset
|
567 |
Thm.cterm_of ctxt (HOLogic.mk_Trueprop (R $ z $ lhs)) (* "R z lhs" *) |
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
568 |
in |
36945 | 569 |
((Thm.assume z_smaller) RS ((Thm.assume lhs_acc) RS acc_downward)) |
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
570 |
|> (fn it => it COMP graph_is_function) |
36945 | 571 |
|> Thm.implies_intr z_smaller |
59621
291934bac95e
Thm.cterm_of and Thm.ctyp_of operate on local context;
wenzelm
parents:
59618
diff
changeset
|
572 |
|> Thm.forall_intr (Thm.cterm_of ctxt z) |
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
573 |
|> (fn it => it COMP valthm) |
36945 | 574 |
|> Thm.implies_intr lhs_acc |
51717
9e7d1c139569
simplifier uses proper Proof.context instead of historic type simpset;
wenzelm
parents:
49170
diff
changeset
|
575 |
|> asm_simplify (put_simpset HOL_basic_ss ctxt addsimps [f_iff]) |
59582 | 576 |
|> fold_rev (Thm.implies_intr o Thm.cprop_of) ags |
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
577 |
|> fold_rev forall_intr_rename (map fst oqs ~~ cqs) |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
578 |
end |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
579 |
in |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
580 |
map2 mk_psimp clauses valthms |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
581 |
end |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
582 |
|
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
583 |
|
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
584 |
(** Induction rule **) |
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
585 |
|
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
586 |
|
34065
6f8f9835e219
moved predicate rules to Predicate.thy; weakened default dest rule predicate1D (is not that reliable wrt. sets)
haftmann
parents:
33855
diff
changeset
|
587 |
val acc_subset_induct = @{thm predicate1I} RS @{thm accp_subset_induct} |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
588 |
|
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
589 |
|
59627 | 590 |
fun mk_partial_induct_rule ctxt globals R complete_thm clauses = |
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
591 |
let |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
592 |
val Globals {domT, x, z, a, P, D, ...} = globals |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
593 |
val acc_R = mk_acc domT R |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
594 |
|
59627 | 595 |
val x_D = Thm.assume (Thm.cterm_of ctxt (HOLogic.mk_Trueprop (D $ x))) |
596 |
val a_D = Thm.cterm_of ctxt (HOLogic.mk_Trueprop (D $ a)) |
|
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
597 |
|
59627 | 598 |
val D_subset = |
599 |
Thm.cterm_of ctxt (Logic.all x |
|
600 |
(Logic.mk_implies (HOLogic.mk_Trueprop (D $ x), HOLogic.mk_Trueprop (acc_R $ x)))) |
|
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
601 |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
602 |
val D_dcl = (* "!!x z. [| x: D; (z,x):R |] ==> z:D" *) |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
603 |
Logic.all x (Logic.all z (Logic.mk_implies (HOLogic.mk_Trueprop (D $ x), |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
604 |
Logic.mk_implies (HOLogic.mk_Trueprop (R $ z $ x), |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
605 |
HOLogic.mk_Trueprop (D $ z))))) |
59627 | 606 |
|> Thm.cterm_of ctxt |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
607 |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
608 |
(* Inductive Hypothesis: !!z. (z,x):R ==> P z *) |
46217
7b19666f0e3d
renamed Term.all to Logic.all_const, in accordance to HOLogic.all_const;
wenzelm
parents:
42793
diff
changeset
|
609 |
val ihyp = Logic.all_const domT $ Abs ("z", domT, |
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
610 |
Logic.mk_implies (HOLogic.mk_Trueprop (R $ Bound 0 $ x), |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
611 |
HOLogic.mk_Trueprop (P $ Bound 0))) |
59627 | 612 |
|> Thm.cterm_of ctxt |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
613 |
|
36945 | 614 |
val aihyp = Thm.assume ihyp |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
615 |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
616 |
fun prove_case clause = |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
617 |
let |
59627 | 618 |
val ClauseInfo {cdata = ClauseContext {ctxt = ctxt1, qs, cqs, ags, gs, lhs, case_hyp, ...}, |
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
619 |
RCs, qglr = (oqs, _, _, _), ...} = clause |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
620 |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
621 |
val case_hyp_conv = K (case_hyp RS eq_reflection) |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
622 |
local open Conv in |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
623 |
val lhs_D = fconv_rule (arg_conv (arg_conv (case_hyp_conv))) x_D |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
624 |
val sih = |
36936
c52d1c130898
incorporated further conversions and conversionals, after some minor tuning;
wenzelm
parents:
36270
diff
changeset
|
625 |
fconv_rule (Conv.binder_conv |
59627 | 626 |
(K (arg1_conv (arg_conv (arg_conv case_hyp_conv)))) ctxt1) aihyp |
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
627 |
end |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
628 |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
629 |
fun mk_Prec (RCInfo {llRI, RIvs, CCas, rcarg, ...}) = sih |
59627 | 630 |
|> Thm.forall_elim (Thm.cterm_of ctxt rcarg) |
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
631 |
|> Thm.elim_implies llRI |
59582 | 632 |
|> fold_rev (Thm.implies_intr o Thm.cprop_of) CCas |
59627 | 633 |
|> fold_rev (Thm.forall_intr o Thm.cterm_of ctxt o Free) RIvs |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
634 |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
635 |
val P_recs = map mk_Prec RCs (* [P rec1, P rec2, ... ] *) |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
636 |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
637 |
val step = HOLogic.mk_Trueprop (P $ lhs) |
59582 | 638 |
|> fold_rev (curry Logic.mk_implies o Thm.prop_of) P_recs |
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
639 |
|> fold_rev (curry Logic.mk_implies) gs |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
640 |
|> curry Logic.mk_implies (HOLogic.mk_Trueprop (D $ lhs)) |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
641 |
|> fold_rev mk_forall_rename (map fst oqs ~~ qs) |
59627 | 642 |
|> Thm.cterm_of ctxt |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
643 |
|
36945 | 644 |
val P_lhs = Thm.assume step |
645 |
|> fold Thm.forall_elim cqs |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
646 |
|> Thm.elim_implies lhs_D |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
647 |
|> fold Thm.elim_implies ags |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
648 |
|> fold Thm.elim_implies P_recs |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
649 |
|
59627 | 650 |
val res = Thm.cterm_of ctxt (HOLogic.mk_Trueprop (P $ x)) |
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
651 |
|> Conv.arg_conv (Conv.arg_conv case_hyp_conv) |
36945 | 652 |
|> Thm.symmetric (* P lhs == P x *) |
653 |
|> (fn eql => Thm.equal_elim eql P_lhs) (* "P x" *) |
|
59582 | 654 |
|> Thm.implies_intr (Thm.cprop_of case_hyp) |
655 |
|> fold_rev (Thm.implies_intr o Thm.cprop_of) ags |
|
36945 | 656 |
|> fold_rev Thm.forall_intr cqs |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
657 |
in |
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
658 |
(res, step) |
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
659 |
end |
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
660 |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
661 |
val (cases, steps) = split_list (map prove_case clauses) |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
662 |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
663 |
val istep = complete_thm |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
664 |
|> Thm.forall_elim_vars 0 |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
665 |
|> fold (curry op COMP) cases (* P x *) |
36945 | 666 |
|> Thm.implies_intr ihyp |
59582 | 667 |
|> Thm.implies_intr (Thm.cprop_of x_D) |
59627 | 668 |
|> Thm.forall_intr (Thm.cterm_of ctxt x) |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
669 |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
670 |
val subset_induct_rule = |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
671 |
acc_subset_induct |
36945 | 672 |
|> (curry op COMP) (Thm.assume D_subset) |
673 |
|> (curry op COMP) (Thm.assume D_dcl) |
|
674 |
|> (curry op COMP) (Thm.assume a_D) |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
675 |
|> (curry op COMP) istep |
36945 | 676 |
|> fold_rev Thm.implies_intr steps |
677 |
|> Thm.implies_intr a_D |
|
678 |
|> Thm.implies_intr D_dcl |
|
679 |
|> Thm.implies_intr D_subset |
|
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
680 |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
681 |
val simple_induct_rule = |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
682 |
subset_induct_rule |
59627 | 683 |
|> Thm.forall_intr (Thm.cterm_of ctxt D) |
684 |
|> Thm.forall_elim (Thm.cterm_of ctxt acc_R) |
|
60752 | 685 |
|> assume_tac ctxt 1 |> Seq.hd |
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
686 |
|> (curry op COMP) (acc_downward |
60801 | 687 |
|> (Thm.instantiate' [SOME (Thm.ctyp_of ctxt domT)] (map (SOME o Thm.cterm_of ctxt) [R, x, z])) |
59627 | 688 |
|> Thm.forall_intr (Thm.cterm_of ctxt z) |
689 |
|> Thm.forall_intr (Thm.cterm_of ctxt x)) |
|
690 |
|> Thm.forall_intr (Thm.cterm_of ctxt a) |
|
691 |
|> Thm.forall_intr (Thm.cterm_of ctxt P) |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
692 |
in |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
693 |
simple_induct_rule |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
694 |
end |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
695 |
|
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
696 |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
697 |
(* FIXME: broken by design *) |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
698 |
fun mk_domain_intro ctxt (Globals {domT, ...}) R R_cases clause = |
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
699 |
let |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
700 |
val ClauseInfo {cdata = ClauseContext {gs, lhs, cqs, ...}, |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
701 |
qglr = (oqs, _, _, _), ...} = clause |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
702 |
val goal = HOLogic.mk_Trueprop (mk_acc domT R $ lhs) |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
703 |
|> fold_rev (curry Logic.mk_implies) gs |
59621
291934bac95e
Thm.cterm_of and Thm.ctyp_of operate on local context;
wenzelm
parents:
59618
diff
changeset
|
704 |
|> Thm.cterm_of ctxt |
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
705 |
in |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
706 |
Goal.init goal |
59498
50b60f501b05
proper context for resolve_tac, eresolve_tac, dresolve_tac, forward_tac etc.;
wenzelm
parents:
58963
diff
changeset
|
707 |
|> (SINGLE (resolve_tac ctxt [accI] 1)) |> the |
50b60f501b05
proper context for resolve_tac, eresolve_tac, dresolve_tac, forward_tac etc.;
wenzelm
parents:
58963
diff
changeset
|
708 |
|> (SINGLE (eresolve_tac ctxt [Thm.forall_elim_vars 0 R_cases] 1)) |> the |
42793 | 709 |
|> (SINGLE (auto_tac ctxt)) |> the |
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
710 |
|> Goal.conclude |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
711 |
|> fold_rev forall_intr_rename (map fst oqs ~~ cqs) |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
712 |
end |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
713 |
|
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
714 |
|
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
715 |
|
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
716 |
(** Termination rule **) |
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
717 |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
718 |
val wf_induct_rule = @{thm Wellfounded.wfP_induct_rule} |
55085
0e8e4dc55866
moved 'fundef_cong' attribute (and other basic 'fun' stuff) up the dependency chain
blanchet
parents:
53603
diff
changeset
|
719 |
val wf_in_rel = @{thm Fun_Def.wf_in_rel} |
0e8e4dc55866
moved 'fundef_cong' attribute (and other basic 'fun' stuff) up the dependency chain
blanchet
parents:
53603
diff
changeset
|
720 |
val in_rel_def = @{thm Fun_Def.in_rel_def} |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
721 |
|
51717
9e7d1c139569
simplifier uses proper Proof.context instead of historic type simpset;
wenzelm
parents:
49170
diff
changeset
|
722 |
fun mk_nest_term_case ctxt globals R' ihyp clause = |
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
723 |
let |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
724 |
val Globals {z, ...} = globals |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
725 |
val ClauseInfo {cdata = ClauseContext {qs, cqs, ags, lhs, case_hyp, ...}, tree, |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
726 |
qglr=(oqs, _, _, _), ...} = clause |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
727 |
|
51717
9e7d1c139569
simplifier uses proper Proof.context instead of historic type simpset;
wenzelm
parents:
49170
diff
changeset
|
728 |
val ih_case = full_simplify (put_simpset HOL_basic_ss ctxt addsimps [case_hyp]) ihyp |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
729 |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
730 |
fun step (fixes, assumes) (_ $ arg) u (sub,(hyps,thms)) = |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
731 |
let |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
732 |
val used = (u @ sub) |
59618 | 733 |
|> map (fn (ctx, thm) => Function_Context_Tree.export_thm ctxt ctx thm) |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
734 |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
735 |
val hyp = HOLogic.mk_Trueprop (R' $ arg $ lhs) |
59582 | 736 |
|> fold_rev (curry Logic.mk_implies o Thm.prop_of) used (* additional hyps *) |
58816 | 737 |
|> Function_Context_Tree.export_term (fixes, assumes) |
59582 | 738 |
|> fold_rev (curry Logic.mk_implies o Thm.prop_of) ags |
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
739 |
|> fold_rev mk_forall_rename (map fst oqs ~~ qs) |
59621
291934bac95e
Thm.cterm_of and Thm.ctyp_of operate on local context;
wenzelm
parents:
59618
diff
changeset
|
740 |
|> Thm.cterm_of ctxt |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
741 |
|
36945 | 742 |
val thm = Thm.assume hyp |
743 |
|> fold Thm.forall_elim cqs |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
744 |
|> fold Thm.elim_implies ags |
59618 | 745 |
|> Function_Context_Tree.import_thm ctxt (fixes, assumes) |
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
746 |
|> fold Thm.elim_implies used (* "(arg, lhs) : R'" *) |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
747 |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
748 |
val z_eq_arg = HOLogic.mk_Trueprop (mk_eq (z, arg)) |
59621
291934bac95e
Thm.cterm_of and Thm.ctyp_of operate on local context;
wenzelm
parents:
59618
diff
changeset
|
749 |
|> Thm.cterm_of ctxt |> Thm.assume |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
750 |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
751 |
val acc = thm COMP ih_case |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
752 |
val z_acc_local = acc |
36945 | 753 |
|> Conv.fconv_rule |
754 |
(Conv.arg_conv (Conv.arg_conv (K (Thm.symmetric (z_eq_arg RS eq_reflection))))) |
|
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
755 |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
756 |
val ethm = z_acc_local |
59618 | 757 |
|> Function_Context_Tree.export_thm ctxt (fixes, |
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
758 |
z_eq_arg :: case_hyp :: ags @ assumes) |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
759 |
|> fold_rev forall_intr_rename (map fst oqs ~~ cqs) |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
760 |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
761 |
val sub' = sub @ [(([],[]), acc)] |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
762 |
in |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
763 |
(sub', (hyp :: hyps, ethm :: thms)) |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
764 |
end |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
765 |
| step _ _ _ _ = raise Match |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
766 |
in |
58816 | 767 |
Function_Context_Tree.traverse_tree step tree |
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
768 |
end |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
769 |
|
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
770 |
|
51717
9e7d1c139569
simplifier uses proper Proof.context instead of historic type simpset;
wenzelm
parents:
49170
diff
changeset
|
771 |
fun mk_nest_term_rule ctxt globals R R_cases clauses = |
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
772 |
let |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
773 |
val Globals { domT, x, z, ... } = globals |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
774 |
val acc_R = mk_acc domT R |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
775 |
|
61340 | 776 |
val ([Rn], ctxt') = Variable.variant_fixes ["R"] ctxt |
777 |
val R' = Free (Rn, fastype_of R) |
|
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
778 |
|
61340 | 779 |
val Rrel = Free (Rn, HOLogic.mk_setT (HOLogic.mk_prodT (domT, domT))) |
67149 | 780 |
val inrel_R = Const (\<^const_name>\<open>Fun_Def.in_rel\<close>, |
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
781 |
HOLogic.mk_setT (HOLogic.mk_prodT (domT, domT)) --> fastype_of R) $ Rrel |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
782 |
|
67149 | 783 |
val wfR' = HOLogic.mk_Trueprop (Const (\<^const_name>\<open>Wellfounded.wfP\<close>, |
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
784 |
(domT --> domT --> boolT) --> boolT) $ R') |
61340 | 785 |
|> Thm.cterm_of ctxt' (* "wf R'" *) |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
786 |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
787 |
(* Inductive Hypothesis: !!z. (z,x):R' ==> z : acc R *) |
46217
7b19666f0e3d
renamed Term.all to Logic.all_const, in accordance to HOLogic.all_const;
wenzelm
parents:
42793
diff
changeset
|
788 |
val ihyp = Logic.all_const domT $ Abs ("z", domT, |
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
789 |
Logic.mk_implies (HOLogic.mk_Trueprop (R' $ Bound 0 $ x), |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
790 |
HOLogic.mk_Trueprop (acc_R $ Bound 0))) |
61340 | 791 |
|> Thm.cterm_of ctxt' |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
792 |
|
36945 | 793 |
val ihyp_a = Thm.assume ihyp |> Thm.forall_elim_vars 0 |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
794 |
|
61340 | 795 |
val R_z_x = Thm.cterm_of ctxt' (HOLogic.mk_Trueprop (R $ z $ x)) |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
796 |
|
61340 | 797 |
val (hyps, cases) = fold (mk_nest_term_case ctxt' globals R' ihyp_a) clauses ([], []) |
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
798 |
in |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
799 |
R_cases |
61340 | 800 |
|> Thm.forall_elim (Thm.cterm_of ctxt' z) |
801 |
|> Thm.forall_elim (Thm.cterm_of ctxt' x) |
|
802 |
|> Thm.forall_elim (Thm.cterm_of ctxt' (acc_R $ z)) |
|
36945 | 803 |
|> curry op COMP (Thm.assume R_z_x) |
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
804 |
|> fold_rev (curry op COMP) cases |
36945 | 805 |
|> Thm.implies_intr R_z_x |
61340 | 806 |
|> Thm.forall_intr (Thm.cterm_of ctxt' z) |
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
807 |
|> (fn it => it COMP accI) |
36945 | 808 |
|> Thm.implies_intr ihyp |
61340 | 809 |
|> Thm.forall_intr (Thm.cterm_of ctxt' x) |
52467 | 810 |
|> (fn it => Drule.compose (it, 2, wf_induct_rule)) |
36945 | 811 |
|> curry op RS (Thm.assume wfR') |
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
812 |
|> forall_intr_vars |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
813 |
|> (fn it => it COMP allI) |
36945 | 814 |
|> fold Thm.implies_intr hyps |
815 |
|> Thm.implies_intr wfR' |
|
61340 | 816 |
|> Thm.forall_intr (Thm.cterm_of ctxt' R') |
817 |
|> Thm.forall_elim (Thm.cterm_of ctxt' inrel_R) |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
818 |
|> curry op RS wf_in_rel |
61340 | 819 |
|> full_simplify (put_simpset HOL_basic_ss ctxt' addsimps [in_rel_def]) |
820 |
|> Thm.forall_intr_name ("R", Thm.cterm_of ctxt' Rrel) |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
821 |
end |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
822 |
|
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
823 |
|
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
824 |
|
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
825 |
fun prepare_function config defname [((fname, fT), mixfix)] abstract_qglrs lthy = |
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
826 |
let |
41846
b368a7aee46a
removed support for tail-recursion from function package (now implemented by partial_function)
krauss
parents:
41417
diff
changeset
|
827 |
val FunctionConfig {domintros, default=default_opt, ...} = config |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
828 |
|
63011 | 829 |
val default_str = the_default "%x. HOL.undefined" (* FIXME proper term!? *) default_opt |
830 |
val fvar = (Binding.name_of fname, fT) |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
831 |
val domT = domain_type fT |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
832 |
val ranT = range_type fT |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
833 |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
834 |
val default = Syntax.parse_term lthy default_str |
39288 | 835 |
|> Type.constraint fT |> Syntax.check_term lthy |
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
836 |
|
63011 | 837 |
val (globals, ctxt') = fix_globals domT ranT (Free fvar) lthy |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
838 |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
839 |
val Globals { x, h, ... } = globals |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
840 |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
841 |
val clauses = map (mk_clause_context x ctxt') abstract_qglrs |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
842 |
|
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
843 |
val n = length abstract_qglrs |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
844 |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
845 |
fun build_tree (ClauseContext { ctxt, rhs, ...}) = |
65418
c821f1f3d92d
more general signature; works for all terms, not just frees
Lars Hupel <lars.hupel@mytum.de>
parents:
63352
diff
changeset
|
846 |
Function_Context_Tree.mk_tree (Free fvar) h ctxt rhs |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
847 |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
848 |
val trees = map build_tree clauses |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
849 |
val RCss = map find_calls trees |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
850 |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
851 |
val ((G, GIntro_thms, G_elim, G_induct), lthy) = |
63001 | 852 |
PROFILE "def_graph" |
63004 | 853 |
(define_graph |
63011 | 854 |
(derived_name_suffix defname "_graph", domT --> ranT --> boolT) (Free fvar) clauses RCss) |
855 |
lthy |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
856 |
|
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
857 |
val ((f, (_, f_defthm)), lthy) = |
63004 | 858 |
PROFILE "def_fun" (define_function defname (fname, mixfix) domT ranT G default) lthy |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
859 |
|
63011 | 860 |
val RCss = map (map (inst_RC lthy (Free fvar) f)) RCss |
861 |
val trees = map (Function_Context_Tree.inst_tree lthy (Free fvar) f) trees |
|
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
862 |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
863 |
val ((R, RIntro_thmss, R_elim), lthy) = |
63001 | 864 |
PROFILE "def_rel" |
63005 | 865 |
(define_recursion_relation (derived_name_suffix defname "_rel", domT --> domT --> boolT) |
63001 | 866 |
abstract_qglrs clauses RCss) lthy |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
867 |
|
52384 | 868 |
val dom = mk_acc domT R |
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
869 |
val (_, lthy) = |
63004 | 870 |
Local_Theory.abbrev Syntax.mode_default |
63011 | 871 |
((derived_name_suffix defname "_dom", NoSyn), dom) lthy |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
872 |
|
42361 | 873 |
val newthy = Proof_Context.theory_of lthy |
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
874 |
val clauses = map (transfer_clause_ctx newthy) clauses |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
875 |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
876 |
val xclauses = PROFILE "xclauses" |
58634
9f10d82e8188
added parameterized ML antiquotations @{map N}, @{fold N}, @{fold_map N}, @{split_list N};
wenzelm
parents:
55990
diff
changeset
|
877 |
(@{map 7} (mk_clause_info globals G f) (1 upto n) clauses abstract_qglrs trees |
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
878 |
RCss GIntro_thms) RIntro_thmss |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
879 |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
880 |
val complete = |
59621
291934bac95e
Thm.cterm_of and Thm.ctyp_of operate on local context;
wenzelm
parents:
59618
diff
changeset
|
881 |
mk_completeness globals clauses abstract_qglrs |> Thm.cterm_of lthy |> Thm.assume |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
882 |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
883 |
val compat = |
63011 | 884 |
mk_compat_proof_obligations domT ranT (Free fvar) f abstract_qglrs |
59621
291934bac95e
Thm.cterm_of and Thm.ctyp_of operate on local context;
wenzelm
parents:
59618
diff
changeset
|
885 |
|> map (Thm.cterm_of lthy #> Thm.assume) |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
886 |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
887 |
val compat_store = store_compat_thms n compat |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
888 |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
889 |
val (goalstate, values) = PROFILE "prove_stuff" |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
890 |
(prove_stuff lthy globals G f R xclauses complete compat |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
891 |
compat_store G_elim) f_defthm |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
892 |
|
60643 | 893 |
fun mk_partial_rules newctxt provedgoal = |
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
894 |
let |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
895 |
val (graph_is_function, complete_thm) = |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
896 |
provedgoal |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
897 |
|> Conjunction.elim |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
898 |
|> apfst (Thm.forall_elim_vars 0) |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
899 |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
900 |
val f_iff = graph_is_function RS (f_defthm RS ex1_implies_iff) |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
901 |
|
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
902 |
val psimps = PROFILE "Proving simplification rules" |
51717
9e7d1c139569
simplifier uses proper Proof.context instead of historic type simpset;
wenzelm
parents:
49170
diff
changeset
|
903 |
(mk_psimps newctxt globals R xclauses values f_iff) graph_is_function |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
904 |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
905 |
val simple_pinduct = PROFILE "Proving partial induction rule" |
59627 | 906 |
(mk_partial_induct_rule newctxt globals R complete_thm) xclauses |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
907 |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
908 |
val total_intro = PROFILE "Proving nested termination rule" |
51717
9e7d1c139569
simplifier uses proper Proof.context instead of historic type simpset;
wenzelm
parents:
49170
diff
changeset
|
909 |
(mk_nest_term_rule newctxt globals R R_elim) xclauses |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
910 |
|
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
911 |
val dom_intros = |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
912 |
if domintros then SOME (PROFILE "Proving domain introduction rules" |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
913 |
(map (mk_domain_intro lthy globals R R_elim)) xclauses) |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
914 |
else NONE |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
915 |
in |
53603
59ef06cda7b9
generate elim rules for elimination of function equalities;
Manuel Eberl
parents:
52467
diff
changeset
|
916 |
FunctionResult {fs=[f], G=G, R=R, dom=dom, |
59ef06cda7b9
generate elim rules for elimination of function equalities;
Manuel Eberl
parents:
52467
diff
changeset
|
917 |
cases=[complete_thm], psimps=psimps, pelims=[], |
59ef06cda7b9
generate elim rules for elimination of function equalities;
Manuel Eberl
parents:
52467
diff
changeset
|
918 |
simple_pinducts=[simple_pinduct], |
41846
b368a7aee46a
removed support for tail-recursion from function package (now implemented by partial_function)
krauss
parents:
41417
diff
changeset
|
919 |
termination=total_intro, domintros=dom_intros} |
34232
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
920 |
end |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
921 |
in |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
922 |
((f, goalstate, mk_partial_rules), lthy) |
36a2a3029fd3
new year's resolution: reindented code in function package
krauss
parents:
34065
diff
changeset
|
923 |
end |
33099
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
924 |
|
b8cdd3d73022
function package: more standard names for structures and files
krauss
parents:
diff
changeset
|
925 |
end |