author | wenzelm |
Sat, 31 Dec 2005 21:49:42 +0100 | |
changeset 18534 | 6799b38ed872 |
parent 18374 | 598e7fd7438b |
child 18557 | 60a0f9caa0a2 |
permissions | -rw-r--r-- |
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(* Title: Provers/classical.ML |
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ID: $Id$ |
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Author: Lawrence C Paulson, Cambridge University Computer Laboratory |
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Copyright 1992 University of Cambridge |
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Theorem prover for classical reasoning, including predicate calculus, set |
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theory, etc. |
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Rules must be classified as intro, elim, safe, hazardous (unsafe). |
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A rule is unsafe unless it can be applied blindly without harmful results. |
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For a rule to be safe, its premises and conclusion should be logically |
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equivalent. There should be no variables in the premises that are not in |
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the conclusion. |
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*) |
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(*higher precedence than := facilitates use of references*) |
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infix 4 addSIs addSEs addSDs addIs addEs addDs delrules |
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addSWrapper delSWrapper addWrapper delWrapper |
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addSbefore addSafter addbefore addafter |
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addD2 addE2 addSD2 addSE2; |
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(*should be a type abbreviation in signature CLASSICAL*) |
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type netpair = (int * (bool * thm)) Net.net * (int * (bool * thm)) Net.net; |
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type wrapper = (int -> tactic) -> (int -> tactic); |
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signature CLASSICAL_DATA = |
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sig |
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val mp : thm (* [| P-->Q; P |] ==> Q *) |
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val not_elim : thm (* [| ~P; P |] ==> R *) |
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val classical : thm (* (~P ==> P) ==> P *) |
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val sizef : thm -> int (* size function for BEST_FIRST *) |
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val hyp_subst_tacs: (int -> tactic) list |
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end; |
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signature BASIC_CLASSICAL = |
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sig |
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type claset |
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val empty_cs: claset |
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val print_cs: claset -> unit |
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val print_claset: theory -> unit |
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val rep_cs: |
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claset -> {safeIs: thm list, safeEs: thm list, |
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hazIs: thm list, hazEs: thm list, |
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swrappers: (string * wrapper) list, |
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uwrappers: (string * wrapper) list, |
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safe0_netpair: netpair, safep_netpair: netpair, |
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haz_netpair: netpair, dup_netpair: netpair, |
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xtra_netpair: ContextRules.netpair} |
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val merge_cs : claset * claset -> claset |
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val addDs : claset * thm list -> claset |
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val addEs : claset * thm list -> claset |
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val addIs : claset * thm list -> claset |
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val addSDs : claset * thm list -> claset |
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val addSEs : claset * thm list -> claset |
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val addSIs : claset * thm list -> claset |
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val delrules : claset * thm list -> claset |
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val addSWrapper : claset * (string * wrapper) -> claset |
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val delSWrapper : claset * string -> claset |
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val addWrapper : claset * (string * wrapper) -> claset |
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val delWrapper : claset * string -> claset |
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val addSbefore : claset * (string * (int -> tactic)) -> claset |
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val addSafter : claset * (string * (int -> tactic)) -> claset |
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val addbefore : claset * (string * (int -> tactic)) -> claset |
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val addafter : claset * (string * (int -> tactic)) -> claset |
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val addD2 : claset * (string * thm) -> claset |
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val addE2 : claset * (string * thm) -> claset |
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val addSD2 : claset * (string * thm) -> claset |
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val addSE2 : claset * (string * thm) -> claset |
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val appSWrappers : claset -> wrapper |
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val appWrappers : claset -> wrapper |
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val change_claset_of: theory -> (claset -> claset) -> unit |
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val change_claset: (claset -> claset) -> unit |
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val claset_of: theory -> claset |
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val claset: unit -> claset |
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val CLASET: (claset -> tactic) -> tactic |
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val CLASET': (claset -> 'a -> tactic) -> 'a -> tactic |
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val local_claset_of : Proof.context -> claset |
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val fast_tac : claset -> int -> tactic |
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val slow_tac : claset -> int -> tactic |
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val weight_ASTAR : int ref |
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val astar_tac : claset -> int -> tactic |
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val slow_astar_tac : claset -> int -> tactic |
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val best_tac : claset -> int -> tactic |
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val first_best_tac : claset -> int -> tactic |
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val slow_best_tac : claset -> int -> tactic |
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val depth_tac : claset -> int -> int -> tactic |
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val deepen_tac : claset -> int -> int -> tactic |
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val contr_tac : int -> tactic |
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val dup_elim : thm -> thm |
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val dup_intr : thm -> thm |
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val dup_step_tac : claset -> int -> tactic |
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val eq_mp_tac : int -> tactic |
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val haz_step_tac : claset -> int -> tactic |
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val joinrules : thm list * thm list -> (bool * thm) list |
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val mp_tac : int -> tactic |
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val safe_tac : claset -> tactic |
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val safe_steps_tac : claset -> int -> tactic |
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val safe_step_tac : claset -> int -> tactic |
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val clarify_tac : claset -> int -> tactic |
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val clarify_step_tac : claset -> int -> tactic |
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val step_tac : claset -> int -> tactic |
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val slow_step_tac : claset -> int -> tactic |
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val swapify : thm list -> thm list |
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val swap_res_tac : thm list -> int -> tactic |
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val inst_step_tac : claset -> int -> tactic |
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val inst0_step_tac : claset -> int -> tactic |
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val instp_step_tac : claset -> int -> tactic |
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val AddDs : thm list -> unit |
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val AddEs : thm list -> unit |
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val AddIs : thm list -> unit |
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val AddSDs : thm list -> unit |
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val AddSEs : thm list -> unit |
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val AddSIs : thm list -> unit |
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val Delrules : thm list -> unit |
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val Safe_tac : tactic |
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val Safe_step_tac : int -> tactic |
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val Clarify_tac : int -> tactic |
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val Clarify_step_tac : int -> tactic |
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val Step_tac : int -> tactic |
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val Fast_tac : int -> tactic |
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val Best_tac : int -> tactic |
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val Slow_tac : int -> tactic |
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val Slow_best_tac : int -> tactic |
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val Deepen_tac : int -> int -> tactic |
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end; |
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signature CLASSICAL = |
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sig |
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include BASIC_CLASSICAL |
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val swap: thm (* ~P ==> (~Q ==> P) ==> Q *) |
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val classical_rule: thm -> thm |
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val add_context_safe_wrapper: string * (Proof.context -> wrapper) -> theory -> theory |
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val del_context_safe_wrapper: string -> theory -> theory |
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val add_context_unsafe_wrapper: string * (Proof.context -> wrapper) -> theory -> theory |
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val del_context_unsafe_wrapper: string -> theory -> theory |
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val get_claset: theory -> claset |
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val print_local_claset: Proof.context -> unit |
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val get_local_claset: Proof.context -> claset |
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val put_local_claset: claset -> Proof.context -> Proof.context |
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val safe_dest_global: theory attribute |
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val safe_elim_global: theory attribute |
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val safe_intro_global: theory attribute |
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val haz_dest_global: theory attribute |
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val haz_elim_global: theory attribute |
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val haz_intro_global: theory attribute |
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val rule_del_global: theory attribute |
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val safe_dest_local: Proof.context attribute |
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val safe_elim_local: Proof.context attribute |
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val safe_intro_local: Proof.context attribute |
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val haz_dest_local: Proof.context attribute |
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val haz_elim_local: Proof.context attribute |
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val haz_intro_local: Proof.context attribute |
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val rule_del_local: Proof.context attribute |
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val cla_modifiers: (Args.T list -> (Method.modifier * Args.T list)) list |
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val cla_meth: (claset -> tactic) -> thm list -> Proof.context -> Proof.method |
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val cla_meth': (claset -> int -> tactic) -> thm list -> Proof.context -> Proof.method |
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val cla_method: (claset -> tactic) -> Method.src -> Proof.context -> Proof.method |
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val cla_method': (claset -> int -> tactic) -> Method.src -> Proof.context -> Proof.method |
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val setup: (theory -> theory) list |
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end; |
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functor ClassicalFun(Data: CLASSICAL_DATA): CLASSICAL = |
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struct |
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local open Data in |
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(** classical elimination rules **) |
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(* |
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Classical reasoning requires stronger elimination rules. For |
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instance, make_elim of Pure transforms the HOL rule injD into |
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[| inj f; f x = f y; x = y ==> PROP W |] ==> PROP W |
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Such rules can cause Fast_tac to fail and Blast_tac to report "PROOF |
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FAILED"; classical_rule will strenthen this to |
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[| inj f; ~ W ==> f x = f y; x = y ==> W |] ==> W |
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*) |
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local |
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fun equal_concl concl prop = |
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concl aconv Logic.strip_assums_concl prop; |
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fun is_elim rule = |
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let |
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val thy = Thm.theory_of_thm rule; |
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val concl = Thm.concl_of rule; |
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in |
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Term.is_Var (ObjectLogic.drop_judgment thy concl) andalso |
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exists (equal_concl concl) (Thm.prems_of rule) |
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end; |
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|
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in |
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fun classical_rule rule = |
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if is_elim rule then |
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let |
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val rule' = rule RS classical; |
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val concl' = Thm.concl_of rule'; |
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fun redundant_hyp goal = |
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equal_concl concl' goal orelse |
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(case Logic.strip_assums_hyp goal of |
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hyp :: hyps => exists (fn t => t aconv hyp) hyps |
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| _ => false); |
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val rule'' = |
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rule' |> ALLGOALS (SUBGOAL (fn (goal, i) => |
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if i = 1 orelse redundant_hyp goal |
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then Tactic.etac thin_rl i |
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else all_tac)) |
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|> Seq.hd |
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|> Drule.zero_var_indexes; |
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in if Drule.weak_eq_thm (rule, rule'') then rule else rule'' end |
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else rule; |
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end; |
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|
225 |
|
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
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diff
changeset
|
226 |
|
1800 | 227 |
(*** Useful tactics for classical reasoning ***) |
0 | 228 |
|
1524 | 229 |
val imp_elim = (*cannot use bind_thm within a structure!*) |
18534
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added classical_rule, which replaces Data.make_elim;
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diff
changeset
|
230 |
store_thm ("imp_elim", classical_rule (Tactic.make_elim mp)); |
0 | 231 |
|
10736 | 232 |
(*Prove goal that assumes both P and ~P. |
4392 | 233 |
No backtracking if it finds an equal assumption. Perhaps should call |
234 |
ematch_tac instead of eresolve_tac, but then cannot prove ZF/cantor.*) |
|
10736 | 235 |
val contr_tac = eresolve_tac [not_elim] THEN' |
4392 | 236 |
(eq_assume_tac ORELSE' assume_tac); |
0 | 237 |
|
681
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
238 |
(*Finds P-->Q and P in the assumptions, replaces implication by Q. |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
239 |
Could do the same thing for P<->Q and P... *) |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
240 |
fun mp_tac i = eresolve_tac [not_elim, imp_elim] i THEN assume_tac i; |
0 | 241 |
|
242 |
(*Like mp_tac but instantiates no variables*) |
|
681
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
243 |
fun eq_mp_tac i = ematch_tac [not_elim, imp_elim] i THEN eq_assume_tac i; |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
244 |
|
1524 | 245 |
val swap = |
246 |
store_thm ("swap", rule_by_tactic (etac thin_rl 1) (not_elim RS classical)); |
|
0 | 247 |
|
248 |
(*Creates rules to eliminate ~A, from rules to introduce A*) |
|
249 |
fun swapify intrs = intrs RLN (2, [swap]); |
|
12401 | 250 |
fun swapped x = Attrib.no_args (fn (x, th) => (x, th RSN (2, swap))) x; |
0 | 251 |
|
252 |
(*Uses introduction rules in the normal way, or on negated assumptions, |
|
253 |
trying rules in order. *) |
|
10736 | 254 |
fun swap_res_tac rls = |
54 | 255 |
let fun addrl (rl,brls) = (false, rl) :: (true, rl RSN (2,swap)) :: brls |
10736 | 256 |
in assume_tac ORELSE' |
257 |
contr_tac ORELSE' |
|
15574
b1d1b5bfc464
Removed practically all references to Library.foldr.
skalberg
parents:
15570
diff
changeset
|
258 |
biresolve_tac (foldr addrl [] rls) |
0 | 259 |
end; |
260 |
||
681
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
261 |
(*Duplication of hazardous rules, for complete provers*) |
2689
6d3d893453de
dup_intr & dup_elim no longer call standard -- this
paulson
parents:
2630
diff
changeset
|
262 |
fun dup_intr th = zero_var_indexes (th RS classical); |
681
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
263 |
|
6967 | 264 |
fun dup_elim th = |
13525 | 265 |
(case try (fn () => |
266 |
rule_by_tactic (TRYALL (etac revcut_rl)) |
|
17257
0ab67cb765da
introduced binding priority 1 for linear combinators etc.
haftmann
parents:
17084
diff
changeset
|
267 |
((th RSN (2, revcut_rl)) |> assumption 2 |> Seq.hd)) () of |
15531 | 268 |
SOME th' => th' |
6967 | 269 |
| _ => error ("Bad format for elimination rule\n" ^ string_of_thm th)); |
0 | 270 |
|
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
271 |
|
1800 | 272 |
(**** Classical rule sets ****) |
0 | 273 |
|
274 |
datatype claset = |
|
12401 | 275 |
CS of {safeIs : thm list, (*safe introduction rules*) |
276 |
safeEs : thm list, (*safe elimination rules*) |
|
277 |
hazIs : thm list, (*unsafe introduction rules*) |
|
278 |
hazEs : thm list, (*unsafe elimination rules*) |
|
279 |
swrappers : (string * wrapper) list, (*for transforming safe_step_tac*) |
|
9938 | 280 |
uwrappers : (string * wrapper) list, (*for transforming step_tac*) |
12401 | 281 |
safe0_netpair : netpair, (*nets for trivial cases*) |
282 |
safep_netpair : netpair, (*nets for >0 subgoals*) |
|
283 |
haz_netpair : netpair, (*nets for unsafe rules*) |
|
284 |
dup_netpair : netpair, (*nets for duplication*) |
|
285 |
xtra_netpair : ContextRules.netpair}; (*nets for extra rules*) |
|
0 | 286 |
|
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
287 |
(*Desired invariants are |
9938 | 288 |
safe0_netpair = build safe0_brls, |
289 |
safep_netpair = build safep_brls, |
|
290 |
haz_netpair = build (joinrules(hazIs, hazEs)), |
|
10736 | 291 |
dup_netpair = build (joinrules(map dup_intr hazIs, |
12376
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
292 |
map dup_elim hazEs)) |
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
293 |
|
10736 | 294 |
where build = build_netpair(Net.empty,Net.empty), |
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
295 |
safe0_brls contains all brules that solve the subgoal, and |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
296 |
safep_brls contains all brules that generate 1 or more new subgoals. |
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
297 |
The theorem lists are largely comments, though they are used in merge_cs and print_cs. |
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
298 |
Nets must be built incrementally, to save space and time. |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
299 |
*) |
0 | 300 |
|
6502 | 301 |
val empty_netpair = (Net.empty, Net.empty); |
302 |
||
10736 | 303 |
val empty_cs = |
9938 | 304 |
CS{safeIs = [], |
305 |
safeEs = [], |
|
306 |
hazIs = [], |
|
307 |
hazEs = [], |
|
4651 | 308 |
swrappers = [], |
309 |
uwrappers = [], |
|
6502 | 310 |
safe0_netpair = empty_netpair, |
311 |
safep_netpair = empty_netpair, |
|
312 |
haz_netpair = empty_netpair, |
|
6955 | 313 |
dup_netpair = empty_netpair, |
314 |
xtra_netpair = empty_netpair}; |
|
0 | 315 |
|
15036 | 316 |
fun print_cs (CS {safeIs, safeEs, hazIs, hazEs, swrappers, uwrappers, ...}) = |
3546 | 317 |
let val pretty_thms = map Display.pretty_thm in |
9760 | 318 |
[Pretty.big_list "safe introduction rules (intro!):" (pretty_thms safeIs), |
319 |
Pretty.big_list "introduction rules (intro):" (pretty_thms hazIs), |
|
320 |
Pretty.big_list "safe elimination rules (elim!):" (pretty_thms safeEs), |
|
15036 | 321 |
Pretty.big_list "elimination rules (elim):" (pretty_thms hazEs), |
322 |
Pretty.strs ("safe wrappers:" :: map #1 swrappers), |
|
323 |
Pretty.strs ("unsafe wrappers:" :: map #1 uwrappers)] |
|
8727 | 324 |
|> Pretty.chunks |> Pretty.writeln |
3546 | 325 |
end; |
0 | 326 |
|
4653 | 327 |
fun rep_cs (CS args) = args; |
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
328 |
|
10736 | 329 |
local |
15574
b1d1b5bfc464
Removed practically all references to Library.foldr.
skalberg
parents:
15570
diff
changeset
|
330 |
fun wrap l tac = foldr (fn ((name,tacf),w) => tacf w) tac l; |
10736 | 331 |
in |
12376
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
332 |
fun appSWrappers (CS{swrappers,...}) = wrap swrappers; |
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
333 |
fun appWrappers (CS{uwrappers,...}) = wrap uwrappers; |
4651 | 334 |
end; |
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
335 |
|
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
336 |
|
1800 | 337 |
(*** Adding (un)safe introduction or elimination rules. |
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
338 |
|
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
339 |
In case of overlap, new rules are tried BEFORE old ones!! |
1800 | 340 |
***) |
0 | 341 |
|
12376
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
342 |
(*For use with biresolve_tac. Combines intro rules with swap to handle negated |
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
343 |
assumptions. Pairs elim rules with true. *) |
12376
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
344 |
fun joinrules (intrs, elims) = |
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
345 |
(map (pair true) (elims @ swapify intrs) @ map (pair false) intrs); |
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
346 |
|
12401 | 347 |
fun joinrules' (intrs, elims) = |
12376
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
348 |
(map (pair true) elims @ map (pair false) intrs); |
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
349 |
|
10736 | 350 |
(*Priority: prefer rules with fewest subgoals, |
1231 | 351 |
then rules added most recently (preferring the head of the list).*) |
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
352 |
fun tag_brls k [] = [] |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
353 |
| tag_brls k (brl::brls) = |
10736 | 354 |
(1000000*subgoals_of_brl brl + k, brl) :: |
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
355 |
tag_brls (k+1) brls; |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
356 |
|
12401 | 357 |
fun tag_brls' _ _ [] = [] |
358 |
| tag_brls' w k (brl::brls) = ((w, k), brl) :: tag_brls' w (k + 1) brls; |
|
10736 | 359 |
|
15574
b1d1b5bfc464
Removed practically all references to Library.foldr.
skalberg
parents:
15570
diff
changeset
|
360 |
fun insert_tagged_list kbrls netpr = foldr Tactic.insert_tagged_brl netpr kbrls; |
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
361 |
|
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
362 |
(*Insert into netpair that already has nI intr rules and nE elim rules. |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
363 |
Count the intr rules double (to account for swapify). Negate to give the |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
364 |
new insertions the lowest priority.*) |
12376
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
365 |
fun insert (nI, nE) = insert_tagged_list o (tag_brls (~(2*nI+nE))) o joinrules; |
12401 | 366 |
fun insert' w (nI, nE) = insert_tagged_list o tag_brls' w (~(nI + nE)) o joinrules'; |
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
367 |
|
15574
b1d1b5bfc464
Removed practically all references to Library.foldr.
skalberg
parents:
15570
diff
changeset
|
368 |
fun delete_tagged_list brls netpr = foldr Tactic.delete_tagged_brl netpr brls; |
12362 | 369 |
fun delete x = delete_tagged_list (joinrules x); |
12401 | 370 |
fun delete' x = delete_tagged_list (joinrules' x); |
1800 | 371 |
|
13105
3d1e7a199bdc
use eq_thm_prop instead of slightly inadequate eq_thm;
wenzelm
parents:
12401
diff
changeset
|
372 |
val mem_thm = gen_mem Drule.eq_thm_prop |
3d1e7a199bdc
use eq_thm_prop instead of slightly inadequate eq_thm;
wenzelm
parents:
12401
diff
changeset
|
373 |
and rem_thm = gen_rem Drule.eq_thm_prop; |
2813
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
374 |
|
1927
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
375 |
(*Warn if the rule is already present ELSEWHERE in the claset. The addition |
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
376 |
is still allowed.*) |
12376
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
377 |
fun warn_dup th (CS{safeIs, safeEs, hazIs, hazEs, ...}) = |
10736 | 378 |
if mem_thm (th, safeIs) then |
9938 | 379 |
warning ("Rule already declared as safe introduction (intro!)\n" ^ string_of_thm th) |
2813
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
380 |
else if mem_thm (th, safeEs) then |
9408 | 381 |
warning ("Rule already declared as safe elimination (elim!)\n" ^ string_of_thm th) |
10736 | 382 |
else if mem_thm (th, hazIs) then |
9760 | 383 |
warning ("Rule already declared as introduction (intro)\n" ^ string_of_thm th) |
10736 | 384 |
else if mem_thm (th, hazEs) then |
9760 | 385 |
warning ("Rule already declared as elimination (elim)\n" ^ string_of_thm th) |
1927
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
386 |
else (); |
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
387 |
|
12376
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
388 |
|
1800 | 389 |
(*** Safe rules ***) |
982
4fe0b642b7d5
Addition of wrappers for integration with the simplifier.
lcp
parents:
747
diff
changeset
|
390 |
|
18534
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
391 |
fun addSI th |
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
392 |
(cs as CS {safeIs, safeEs, hazIs, hazEs, swrappers, uwrappers, |
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
393 |
safe0_netpair, safep_netpair, haz_netpair, dup_netpair, xtra_netpair}) = |
10736 | 394 |
if mem_thm (th, safeIs) then |
9938 | 395 |
(warning ("Ignoring duplicate safe introduction (intro!)\n" ^ string_of_thm th); |
396 |
cs) |
|
1927
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
397 |
else |
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
398 |
let val (safe0_rls, safep_rls) = (*0 subgoals vs 1 or more*) |
15570 | 399 |
List.partition Thm.no_prems [th] |
1927
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
400 |
val nI = length safeIs + 1 |
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
401 |
and nE = length safeEs |
1927
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
402 |
in warn_dup th cs; |
9938 | 403 |
CS{safeIs = th::safeIs, |
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
404 |
safe0_netpair = insert (nI,nE) (safe0_rls, []) safe0_netpair, |
9938 | 405 |
safep_netpair = insert (nI,nE) (safep_rls, []) safep_netpair, |
406 |
safeEs = safeEs, |
|
407 |
hazIs = hazIs, |
|
408 |
hazEs = hazEs, |
|
409 |
swrappers = swrappers, |
|
410 |
uwrappers = uwrappers, |
|
411 |
haz_netpair = haz_netpair, |
|
412 |
dup_netpair = dup_netpair, |
|
12401 | 413 |
xtra_netpair = insert' 0 (nI,nE) ([th], []) xtra_netpair} |
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
414 |
end; |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
415 |
|
18534
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
416 |
fun addSE th |
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
417 |
(cs as CS {safeIs, safeEs, hazIs, hazEs, swrappers, uwrappers, |
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
418 |
safe0_netpair, safep_netpair, haz_netpair, dup_netpair, xtra_netpair}) = |
10736 | 419 |
if mem_thm (th, safeEs) then |
9938 | 420 |
(warning ("Ignoring duplicate safe elimination (elim!)\n" ^ string_of_thm th); |
421 |
cs) |
|
1927
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
422 |
else |
18534
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
423 |
let |
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
424 |
val th' = classical_rule th |
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
425 |
val (safe0_rls, safep_rls) = (*0 subgoals vs 1 or more*) |
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
426 |
List.partition (fn rl => nprems_of rl=1) [th'] |
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
427 |
val nI = length safeIs |
1927
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
428 |
and nE = length safeEs + 1 |
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
429 |
in warn_dup th cs; |
9938 | 430 |
CS{safeEs = th::safeEs, |
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
431 |
safe0_netpair = insert (nI,nE) ([], safe0_rls) safe0_netpair, |
9938 | 432 |
safep_netpair = insert (nI,nE) ([], safep_rls) safep_netpair, |
433 |
safeIs = safeIs, |
|
434 |
hazIs = hazIs, |
|
435 |
hazEs = hazEs, |
|
436 |
swrappers = swrappers, |
|
437 |
uwrappers = uwrappers, |
|
438 |
haz_netpair = haz_netpair, |
|
439 |
dup_netpair = dup_netpair, |
|
12401 | 440 |
xtra_netpair = insert' 0 (nI,nE) ([], [th]) xtra_netpair} |
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
441 |
end; |
0 | 442 |
|
18534
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
443 |
fun cs addSIs ths = fold_rev addSI ths cs; |
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
444 |
fun cs addSEs ths = fold_rev addSE ths cs; |
1927
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
445 |
|
17084
fb0a80aef0be
classical rules must have names for ATP integration
paulson
parents:
17057
diff
changeset
|
446 |
(*Give new theorem a name, if it has one already.*) |
fb0a80aef0be
classical rules must have names for ATP integration
paulson
parents:
17057
diff
changeset
|
447 |
fun name_make_elim th = |
fb0a80aef0be
classical rules must have names for ATP integration
paulson
parents:
17057
diff
changeset
|
448 |
case Thm.name_of_thm th of |
18534
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
449 |
"" => Tactic.make_elim th |
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
450 |
| a => Thm.name_thm (a ^ "_dest", Tactic.make_elim th); |
17084
fb0a80aef0be
classical rules must have names for ATP integration
paulson
parents:
17057
diff
changeset
|
451 |
|
fb0a80aef0be
classical rules must have names for ATP integration
paulson
parents:
17057
diff
changeset
|
452 |
fun cs addSDs ths = cs addSEs (map name_make_elim ths); |
0 | 453 |
|
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
454 |
|
1800 | 455 |
(*** Hazardous (unsafe) rules ***) |
0 | 456 |
|
18534
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
457 |
fun addI th |
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
458 |
(cs as CS {safeIs, safeEs, hazIs, hazEs, swrappers, uwrappers, |
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
459 |
safe0_netpair, safep_netpair, haz_netpair, dup_netpair, xtra_netpair}) = |
10736 | 460 |
if mem_thm (th, hazIs) then |
9938 | 461 |
(warning ("Ignoring duplicate introduction (intro)\n" ^ string_of_thm th); |
462 |
cs) |
|
1927
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
463 |
else |
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
464 |
let val nI = length hazIs + 1 |
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
465 |
and nE = length hazEs |
1927
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
466 |
in warn_dup th cs; |
9938 | 467 |
CS{hazIs = th::hazIs, |
468 |
haz_netpair = insert (nI,nE) ([th], []) haz_netpair, |
|
469 |
dup_netpair = insert (nI,nE) (map dup_intr [th], []) dup_netpair, |
|
10736 | 470 |
safeIs = safeIs, |
9938 | 471 |
safeEs = safeEs, |
472 |
hazEs = hazEs, |
|
473 |
swrappers = swrappers, |
|
474 |
uwrappers = uwrappers, |
|
475 |
safe0_netpair = safe0_netpair, |
|
476 |
safep_netpair = safep_netpair, |
|
12401 | 477 |
xtra_netpair = insert' 1 (nI,nE) ([th], []) xtra_netpair} |
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
478 |
end; |
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
479 |
|
18534
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
480 |
fun addE th |
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
481 |
(cs as CS {safeIs, safeEs, hazIs, hazEs, swrappers, uwrappers, |
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
482 |
safe0_netpair, safep_netpair, haz_netpair, dup_netpair, xtra_netpair}) = |
10736 | 483 |
if mem_thm (th, hazEs) then |
9938 | 484 |
(warning ("Ignoring duplicate elimination (elim)\n" ^ string_of_thm th); |
485 |
cs) |
|
1927
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
486 |
else |
18534
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
487 |
let |
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
488 |
val th' = classical_rule th |
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
489 |
val nI = length hazIs |
1927
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
490 |
and nE = length hazEs + 1 |
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
491 |
in warn_dup th cs; |
9938 | 492 |
CS{hazEs = th::hazEs, |
18534
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
493 |
haz_netpair = insert (nI,nE) ([], [th']) haz_netpair, |
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
494 |
dup_netpair = insert (nI,nE) ([], map dup_elim [th']) dup_netpair, |
10736 | 495 |
safeIs = safeIs, |
9938 | 496 |
safeEs = safeEs, |
497 |
hazIs = hazIs, |
|
498 |
swrappers = swrappers, |
|
499 |
uwrappers = uwrappers, |
|
500 |
safe0_netpair = safe0_netpair, |
|
501 |
safep_netpair = safep_netpair, |
|
12401 | 502 |
xtra_netpair = insert' 1 (nI,nE) ([], [th]) xtra_netpair} |
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
503 |
end; |
0 | 504 |
|
18534
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
505 |
fun cs addIs ths = fold_rev addI ths cs; |
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
506 |
fun cs addEs ths = fold_rev addE ths cs; |
1927
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
507 |
|
17084
fb0a80aef0be
classical rules must have names for ATP integration
paulson
parents:
17057
diff
changeset
|
508 |
fun cs addDs ths = cs addEs (map name_make_elim ths); |
0 | 509 |
|
1073
b3f190995bc9
Recoded addSIs, etc., so that nets are built incrementally
lcp
parents:
1010
diff
changeset
|
510 |
|
10736 | 511 |
(*** Deletion of rules |
1800 | 512 |
Working out what to delete, requires repeating much of the code used |
9938 | 513 |
to insert. |
1927
6f97cb16e453
New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents:
1814
diff
changeset
|
514 |
Separate functions delSI, etc., are not exported; instead delrules |
2813
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
515 |
searches in all the lists and chooses the relevant delXX functions. |
1800 | 516 |
***) |
517 |
||
10736 | 518 |
fun delSI th |
12376
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
519 |
(cs as CS{safeIs, safeEs, hazIs, hazEs, swrappers, uwrappers, |
9938 | 520 |
safe0_netpair, safep_netpair, haz_netpair, dup_netpair, xtra_netpair}) = |
2813
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
521 |
if mem_thm (th, safeIs) then |
15570 | 522 |
let val (safe0_rls, safep_rls) = List.partition Thm.no_prems [th] |
2813
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
523 |
in CS{safe0_netpair = delete (safe0_rls, []) safe0_netpair, |
9938 | 524 |
safep_netpair = delete (safep_rls, []) safep_netpair, |
525 |
safeIs = rem_thm (safeIs,th), |
|
526 |
safeEs = safeEs, |
|
527 |
hazIs = hazIs, |
|
528 |
hazEs = hazEs, |
|
529 |
swrappers = swrappers, |
|
530 |
uwrappers = uwrappers, |
|
531 |
haz_netpair = haz_netpair, |
|
532 |
dup_netpair = dup_netpair, |
|
12401 | 533 |
xtra_netpair = delete' ([th], []) xtra_netpair} |
2813
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
534 |
end |
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
535 |
else cs; |
1800 | 536 |
|
2813
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
537 |
fun delSE th |
12376
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
538 |
(cs as CS{safeIs, safeEs, hazIs, hazEs, swrappers, uwrappers, |
9938 | 539 |
safe0_netpair, safep_netpair, haz_netpair, dup_netpair, xtra_netpair}) = |
18534
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
540 |
if mem_thm (th, safeEs) then |
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
541 |
let |
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
542 |
val th' = classical_rule th |
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
543 |
val (safe0_rls, safep_rls) = List.partition (fn rl => nprems_of rl=1) [th'] |
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
544 |
in CS{safe0_netpair = delete ([], safe0_rls) safe0_netpair, |
9938 | 545 |
safep_netpair = delete ([], safep_rls) safep_netpair, |
546 |
safeIs = safeIs, |
|
547 |
safeEs = rem_thm (safeEs,th), |
|
548 |
hazIs = hazIs, |
|
549 |
hazEs = hazEs, |
|
550 |
swrappers = swrappers, |
|
551 |
uwrappers = uwrappers, |
|
552 |
haz_netpair = haz_netpair, |
|
553 |
dup_netpair = dup_netpair, |
|
12401 | 554 |
xtra_netpair = delete' ([], [th]) xtra_netpair} |
18534
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
555 |
end |
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
556 |
else cs; |
1800 | 557 |
|
558 |
||
2813
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
559 |
fun delI th |
12376
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
560 |
(cs as CS{safeIs, safeEs, hazIs, hazEs, swrappers, uwrappers, |
9938 | 561 |
safe0_netpair, safep_netpair, haz_netpair, dup_netpair, xtra_netpair}) = |
2813
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
562 |
if mem_thm (th, hazIs) then |
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
563 |
CS{haz_netpair = delete ([th], []) haz_netpair, |
9938 | 564 |
dup_netpair = delete ([dup_intr th], []) dup_netpair, |
10736 | 565 |
safeIs = safeIs, |
9938 | 566 |
safeEs = safeEs, |
567 |
hazIs = rem_thm (hazIs,th), |
|
568 |
hazEs = hazEs, |
|
569 |
swrappers = swrappers, |
|
570 |
uwrappers = uwrappers, |
|
571 |
safe0_netpair = safe0_netpair, |
|
572 |
safep_netpair = safep_netpair, |
|
12401 | 573 |
xtra_netpair = delete' ([th], []) xtra_netpair} |
2813
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
574 |
else cs; |
1800 | 575 |
|
2813
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
576 |
fun delE th |
12376
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
577 |
(cs as CS{safeIs, safeEs, hazIs, hazEs, swrappers, uwrappers, |
9938 | 578 |
safe0_netpair, safep_netpair, haz_netpair, dup_netpair, xtra_netpair}) = |
18534
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
579 |
let val th' = classical_rule th in |
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
580 |
if mem_thm (th, hazEs) then |
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
581 |
CS{haz_netpair = delete ([], [th']) haz_netpair, |
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
582 |
dup_netpair = delete ([], [dup_elim th']) dup_netpair, |
10736 | 583 |
safeIs = safeIs, |
9938 | 584 |
safeEs = safeEs, |
585 |
hazIs = hazIs, |
|
586 |
hazEs = rem_thm (hazEs,th), |
|
587 |
swrappers = swrappers, |
|
588 |
uwrappers = uwrappers, |
|
589 |
safe0_netpair = safe0_netpair, |
|
590 |
safep_netpair = safep_netpair, |
|
12401 | 591 |
xtra_netpair = delete' ([], [th]) xtra_netpair} |
18534
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
592 |
else cs |
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
593 |
end; |
6955 | 594 |
|
1800 | 595 |
|
2813
cc4c816dafdc
delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents:
2689
diff
changeset
|
596 |
(*Delete ALL occurrences of "th" in the claset (perhaps from several lists)*) |
18534
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
597 |
fun delrule th (cs as CS {safeIs, safeEs, hazIs, hazEs, ...}) = |
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
598 |
let val th' = Tactic.make_elim th in |
9938 | 599 |
if mem_thm (th, safeIs) orelse mem_thm (th, safeEs) orelse |
600 |
mem_thm (th, hazIs) orelse mem_thm (th, hazEs) orelse |
|
12376
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
601 |
mem_thm (th', safeEs) orelse mem_thm (th', hazEs) |
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
602 |
then delSI th (delSE th (delI th (delE th (delSE th' (delE th' cs))))) |
18534
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
603 |
else (warning ("Undeclared classical rule\n" ^ string_of_thm th); cs) |
9938 | 604 |
end; |
1800 | 605 |
|
18534
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
606 |
fun cs delrules ths = fold delrule ths cs; |
1800 | 607 |
|
608 |
||
4767
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
609 |
(*** Modifying the wrapper tacticals ***) |
10736 | 610 |
fun update_swrappers |
12376
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
611 |
(CS{safeIs, safeEs, hazIs, hazEs, swrappers, uwrappers, |
6955 | 612 |
safe0_netpair, safep_netpair, haz_netpair, dup_netpair, xtra_netpair}) f = |
4767
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
613 |
CS{safeIs = safeIs, safeEs = safeEs, hazIs = hazIs, hazEs = hazEs, |
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
614 |
swrappers = f swrappers, uwrappers = uwrappers, |
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
615 |
safe0_netpair = safe0_netpair, safep_netpair = safep_netpair, |
6955 | 616 |
haz_netpair = haz_netpair, dup_netpair = dup_netpair, xtra_netpair = xtra_netpair}; |
4767
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
617 |
|
10736 | 618 |
fun update_uwrappers |
12376
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
619 |
(CS{safeIs, safeEs, hazIs, hazEs, swrappers, uwrappers, |
6955 | 620 |
safe0_netpair, safep_netpair, haz_netpair, dup_netpair, xtra_netpair}) f = |
4767
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
621 |
CS{safeIs = safeIs, safeEs = safeEs, hazIs = hazIs, hazEs = hazEs, |
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
622 |
swrappers = swrappers, uwrappers = f uwrappers, |
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
623 |
safe0_netpair = safe0_netpair, safep_netpair = safep_netpair, |
6955 | 624 |
haz_netpair = haz_netpair, dup_netpair = dup_netpair, xtra_netpair = xtra_netpair}; |
4767
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
625 |
|
982
4fe0b642b7d5
Addition of wrappers for integration with the simplifier.
lcp
parents:
747
diff
changeset
|
626 |
|
4651 | 627 |
(*Add/replace a safe wrapper*) |
4767
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
628 |
fun cs addSWrapper new_swrapper = update_swrappers cs (fn swrappers => |
9721 | 629 |
overwrite_warn (swrappers, new_swrapper) |
630 |
("Overwriting safe wrapper " ^ fst new_swrapper)); |
|
4651 | 631 |
|
632 |
(*Add/replace an unsafe wrapper*) |
|
4767
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
633 |
fun cs addWrapper new_uwrapper = update_uwrappers cs (fn uwrappers => |
9721 | 634 |
overwrite_warn (uwrappers, new_uwrapper) |
9938 | 635 |
("Overwriting unsafe wrapper "^fst new_uwrapper)); |
982
4fe0b642b7d5
Addition of wrappers for integration with the simplifier.
lcp
parents:
747
diff
changeset
|
636 |
|
4651 | 637 |
(*Remove a safe wrapper*) |
4767
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
638 |
fun cs delSWrapper name = update_swrappers cs (fn swrappers => |
17795 | 639 |
let val swrappers' = filter_out (equal name o fst) swrappers in |
15036 | 640 |
if length swrappers <> length swrappers' then swrappers' |
641 |
else (warning ("No such safe wrapper in claset: "^ name); swrappers) |
|
642 |
end); |
|
982
4fe0b642b7d5
Addition of wrappers for integration with the simplifier.
lcp
parents:
747
diff
changeset
|
643 |
|
4651 | 644 |
(*Remove an unsafe wrapper*) |
4767
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
645 |
fun cs delWrapper name = update_uwrappers cs (fn uwrappers => |
17795 | 646 |
let val uwrappers' = filter_out (equal name o fst) uwrappers in |
15036 | 647 |
if length uwrappers <> length uwrappers' then uwrappers' |
648 |
else (warning ("No such unsafe wrapper in claset: " ^ name); uwrappers) |
|
649 |
end); |
|
982
4fe0b642b7d5
Addition of wrappers for integration with the simplifier.
lcp
parents:
747
diff
changeset
|
650 |
|
11168 | 651 |
(* compose a safe tactic alternatively before/after safe_step_tac *) |
10736 | 652 |
fun cs addSbefore (name, tac1) = |
5523 | 653 |
cs addSWrapper (name, fn tac2 => tac1 ORELSE' tac2); |
11181
d04f57b91166
renamed addaltern to addafter, addSaltern to addSafter
oheimb
parents:
11168
diff
changeset
|
654 |
fun cs addSafter (name, tac2) = |
5523 | 655 |
cs addSWrapper (name, fn tac1 => tac1 ORELSE' tac2); |
982
4fe0b642b7d5
Addition of wrappers for integration with the simplifier.
lcp
parents:
747
diff
changeset
|
656 |
|
11168 | 657 |
(*compose a tactic alternatively before/after the step tactic *) |
10736 | 658 |
fun cs addbefore (name, tac1) = |
5523 | 659 |
cs addWrapper (name, fn tac2 => tac1 APPEND' tac2); |
11181
d04f57b91166
renamed addaltern to addafter, addSaltern to addSafter
oheimb
parents:
11168
diff
changeset
|
660 |
fun cs addafter (name, tac2) = |
5523 | 661 |
cs addWrapper (name, fn tac1 => tac1 APPEND' tac2); |
4767
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
662 |
|
10736 | 663 |
fun cs addD2 (name, thm) = |
11181
d04f57b91166
renamed addaltern to addafter, addSaltern to addSafter
oheimb
parents:
11168
diff
changeset
|
664 |
cs addafter (name, datac thm 1); |
10736 | 665 |
fun cs addE2 (name, thm) = |
11181
d04f57b91166
renamed addaltern to addafter, addSaltern to addSafter
oheimb
parents:
11168
diff
changeset
|
666 |
cs addafter (name, eatac thm 1); |
d04f57b91166
renamed addaltern to addafter, addSaltern to addSafter
oheimb
parents:
11168
diff
changeset
|
667 |
fun cs addSD2 (name, thm) = |
d04f57b91166
renamed addaltern to addafter, addSaltern to addSafter
oheimb
parents:
11168
diff
changeset
|
668 |
cs addSafter (name, dmatch_tac [thm] THEN' eq_assume_tac); |
d04f57b91166
renamed addaltern to addafter, addSaltern to addSafter
oheimb
parents:
11168
diff
changeset
|
669 |
fun cs addSE2 (name, thm) = |
d04f57b91166
renamed addaltern to addafter, addSaltern to addSafter
oheimb
parents:
11168
diff
changeset
|
670 |
cs addSafter (name, ematch_tac [thm] THEN' eq_assume_tac); |
982
4fe0b642b7d5
Addition of wrappers for integration with the simplifier.
lcp
parents:
747
diff
changeset
|
671 |
|
1711 | 672 |
(*Merge works by adding all new rules of the 2nd claset into the 1st claset. |
673 |
Merging the term nets may look more efficient, but the rather delicate |
|
674 |
treatment of priority might get muddled up.*) |
|
12376
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
675 |
fun merge_cs (cs as CS{safeIs, safeEs, hazIs, hazEs, ...}, |
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
676 |
CS{safeIs=safeIs2, safeEs=safeEs2, hazIs=hazIs2, hazEs=hazEs2, swrappers, uwrappers, ...}) = |
13105
3d1e7a199bdc
use eq_thm_prop instead of slightly inadequate eq_thm;
wenzelm
parents:
12401
diff
changeset
|
677 |
let val safeIs' = gen_rems Drule.eq_thm_prop (safeIs2,safeIs) |
3d1e7a199bdc
use eq_thm_prop instead of slightly inadequate eq_thm;
wenzelm
parents:
12401
diff
changeset
|
678 |
val safeEs' = gen_rems Drule.eq_thm_prop (safeEs2,safeEs) |
3d1e7a199bdc
use eq_thm_prop instead of slightly inadequate eq_thm;
wenzelm
parents:
12401
diff
changeset
|
679 |
val hazIs' = gen_rems Drule.eq_thm_prop (hazIs2, hazIs) |
3d1e7a199bdc
use eq_thm_prop instead of slightly inadequate eq_thm;
wenzelm
parents:
12401
diff
changeset
|
680 |
val hazEs' = gen_rems Drule.eq_thm_prop (hazEs2, hazEs) |
4767
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
681 |
val cs1 = cs addSIs safeIs' |
9938 | 682 |
addSEs safeEs' |
683 |
addIs hazIs' |
|
684 |
addEs hazEs' |
|
4767
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
685 |
val cs2 = update_swrappers cs1 (fn ws => merge_alists ws swrappers); |
b9f3468c6ee2
introduced functions for updating the wrapper lists
oheimb
parents:
4765
diff
changeset
|
686 |
val cs3 = update_uwrappers cs2 (fn ws => merge_alists ws uwrappers); |
10736 | 687 |
in cs3 |
1711 | 688 |
end; |
689 |
||
982
4fe0b642b7d5
Addition of wrappers for integration with the simplifier.
lcp
parents:
747
diff
changeset
|
690 |
|
1800 | 691 |
(**** Simple tactics for theorem proving ****) |
0 | 692 |
|
693 |
(*Attack subgoals using safe inferences -- matching, not resolution*) |
|
10736 | 694 |
fun safe_step_tac (cs as CS{safe0_netpair,safep_netpair,...}) = |
4651 | 695 |
appSWrappers cs (FIRST' [ |
9938 | 696 |
eq_assume_tac, |
697 |
eq_mp_tac, |
|
698 |
bimatch_from_nets_tac safe0_netpair, |
|
699 |
FIRST' hyp_subst_tacs, |
|
700 |
bimatch_from_nets_tac safep_netpair]); |
|
0 | 701 |
|
5757 | 702 |
(*Repeatedly attack a subgoal using safe inferences -- it's deterministic!*) |
10736 | 703 |
fun safe_steps_tac cs = REPEAT_DETERM1 o |
9938 | 704 |
(fn i => COND (has_fewer_prems i) no_tac (safe_step_tac cs i)); |
5757 | 705 |
|
0 | 706 |
(*Repeatedly attack subgoals using safe inferences -- it's deterministic!*) |
5757 | 707 |
fun safe_tac cs = REPEAT_DETERM1 (FIRSTGOAL (safe_steps_tac cs)); |
747
bdc066781063
deepen_tac: modified due to outcome of experiments. Its
lcp
parents:
681
diff
changeset
|
708 |
|
3705
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
709 |
|
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
710 |
(*** Clarify_tac: do safe steps without causing branching ***) |
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
711 |
|
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
712 |
fun nsubgoalsP n (k,brl) = (subgoals_of_brl brl = n); |
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
713 |
|
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
714 |
(*version of bimatch_from_nets_tac that only applies rules that |
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
715 |
create precisely n subgoals.*) |
10736 | 716 |
fun n_bimatch_from_nets_tac n = |
15570 | 717 |
biresolution_from_nets_tac (Tactic.orderlist o List.filter (nsubgoalsP n)) true; |
3705
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
718 |
|
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
719 |
fun eq_contr_tac i = ematch_tac [not_elim] i THEN eq_assume_tac i; |
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
720 |
val eq_assume_contr_tac = eq_assume_tac ORELSE' eq_contr_tac; |
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
721 |
|
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
722 |
(*Two-way branching is allowed only if one of the branches immediately closes*) |
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
723 |
fun bimatch2_tac netpair i = |
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
724 |
n_bimatch_from_nets_tac 2 netpair i THEN |
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
725 |
(eq_assume_contr_tac i ORELSE eq_assume_contr_tac (i+1)); |
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
726 |
|
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
727 |
(*Attack subgoals using safe inferences -- matching, not resolution*) |
10736 | 728 |
fun clarify_step_tac (cs as CS{safe0_netpair,safep_netpair,...}) = |
4651 | 729 |
appSWrappers cs (FIRST' [ |
9938 | 730 |
eq_assume_contr_tac, |
731 |
bimatch_from_nets_tac safe0_netpair, |
|
732 |
FIRST' hyp_subst_tacs, |
|
733 |
n_bimatch_from_nets_tac 1 safep_netpair, |
|
3705
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
734 |
bimatch2_tac safep_netpair]); |
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
735 |
|
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
736 |
fun clarify_tac cs = SELECT_GOAL (REPEAT_DETERM (clarify_step_tac cs 1)); |
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
737 |
|
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
738 |
|
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
739 |
(*** Unsafe steps instantiate variables or lose information ***) |
76f3b2803982
Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents:
3546
diff
changeset
|
740 |
|
4066 | 741 |
(*Backtracking is allowed among the various these unsafe ways of |
742 |
proving a subgoal. *) |
|
747
bdc066781063
deepen_tac: modified due to outcome of experiments. Its
lcp
parents:
681
diff
changeset
|
743 |
fun inst0_step_tac (CS{safe0_netpair,safep_netpair,...}) = |
10736 | 744 |
assume_tac APPEND' |
745 |
contr_tac APPEND' |
|
747
bdc066781063
deepen_tac: modified due to outcome of experiments. Its
lcp
parents:
681
diff
changeset
|
746 |
biresolve_from_nets_tac safe0_netpair; |
bdc066781063
deepen_tac: modified due to outcome of experiments. Its
lcp
parents:
681
diff
changeset
|
747 |
|
4066 | 748 |
(*These unsafe steps could generate more subgoals.*) |
747
bdc066781063
deepen_tac: modified due to outcome of experiments. Its
lcp
parents:
681
diff
changeset
|
749 |
fun instp_step_tac (CS{safep_netpair,...}) = |
bdc066781063
deepen_tac: modified due to outcome of experiments. Its
lcp
parents:
681
diff
changeset
|
750 |
biresolve_from_nets_tac safep_netpair; |
0 | 751 |
|
752 |
(*These steps could instantiate variables and are therefore unsafe.*) |
|
747
bdc066781063
deepen_tac: modified due to outcome of experiments. Its
lcp
parents:
681
diff
changeset
|
753 |
fun inst_step_tac cs = inst0_step_tac cs APPEND' instp_step_tac cs; |
0 | 754 |
|
10736 | 755 |
fun haz_step_tac (CS{haz_netpair,...}) = |
681
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
756 |
biresolve_from_nets_tac haz_netpair; |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
757 |
|
0 | 758 |
(*Single step for the prover. FAILS unless it makes progress. *) |
10736 | 759 |
fun step_tac cs i = safe_tac cs ORELSE appWrappers cs |
9938 | 760 |
(inst_step_tac cs ORELSE' haz_step_tac cs) i; |
0 | 761 |
|
762 |
(*Using a "safe" rule to instantiate variables is unsafe. This tactic |
|
763 |
allows backtracking from "safe" rules to "unsafe" rules here.*) |
|
10736 | 764 |
fun slow_step_tac cs i = safe_tac cs ORELSE appWrappers cs |
9938 | 765 |
(inst_step_tac cs APPEND' haz_step_tac cs) i; |
0 | 766 |
|
1800 | 767 |
(**** The following tactics all fail unless they solve one goal ****) |
0 | 768 |
|
769 |
(*Dumb but fast*) |
|
10382
1fb807260ff1
atomize: all automated tactics that "solve" goals;
wenzelm
parents:
10309
diff
changeset
|
770 |
fun fast_tac cs = |
11754 | 771 |
ObjectLogic.atomize_tac THEN' SELECT_GOAL (DEPTH_SOLVE (step_tac cs 1)); |
0 | 772 |
|
773 |
(*Slower but smarter than fast_tac*) |
|
10382
1fb807260ff1
atomize: all automated tactics that "solve" goals;
wenzelm
parents:
10309
diff
changeset
|
774 |
fun best_tac cs = |
11754 | 775 |
ObjectLogic.atomize_tac THEN' |
0 | 776 |
SELECT_GOAL (BEST_FIRST (has_fewer_prems 1, sizef) (step_tac cs 1)); |
777 |
||
9402 | 778 |
(*even a bit smarter than best_tac*) |
10382
1fb807260ff1
atomize: all automated tactics that "solve" goals;
wenzelm
parents:
10309
diff
changeset
|
779 |
fun first_best_tac cs = |
11754 | 780 |
ObjectLogic.atomize_tac THEN' |
9402 | 781 |
SELECT_GOAL (BEST_FIRST (has_fewer_prems 1, sizef) (FIRSTGOAL (step_tac cs))); |
782 |
||
10382
1fb807260ff1
atomize: all automated tactics that "solve" goals;
wenzelm
parents:
10309
diff
changeset
|
783 |
fun slow_tac cs = |
11754 | 784 |
ObjectLogic.atomize_tac THEN' |
10382
1fb807260ff1
atomize: all automated tactics that "solve" goals;
wenzelm
parents:
10309
diff
changeset
|
785 |
SELECT_GOAL (DEPTH_SOLVE (slow_step_tac cs 1)); |
0 | 786 |
|
10382
1fb807260ff1
atomize: all automated tactics that "solve" goals;
wenzelm
parents:
10309
diff
changeset
|
787 |
fun slow_best_tac cs = |
11754 | 788 |
ObjectLogic.atomize_tac THEN' |
0 | 789 |
SELECT_GOAL (BEST_FIRST (has_fewer_prems 1, sizef) (slow_step_tac cs 1)); |
790 |
||
681
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
791 |
|
10736 | 792 |
(***ASTAR with weight weight_ASTAR, by Norbert Voelker*) |
793 |
val weight_ASTAR = ref 5; |
|
1587
e7d8a4957bac
Now provides astar versions (thanks to Norbert Voelker)
paulson
parents:
1524
diff
changeset
|
794 |
|
10382
1fb807260ff1
atomize: all automated tactics that "solve" goals;
wenzelm
parents:
10309
diff
changeset
|
795 |
fun astar_tac cs = |
11754 | 796 |
ObjectLogic.atomize_tac THEN' |
10382
1fb807260ff1
atomize: all automated tactics that "solve" goals;
wenzelm
parents:
10309
diff
changeset
|
797 |
SELECT_GOAL |
1fb807260ff1
atomize: all automated tactics that "solve" goals;
wenzelm
parents:
10309
diff
changeset
|
798 |
(ASTAR (has_fewer_prems 1, fn lev => fn thm => size_of_thm thm + !weight_ASTAR * lev) |
1fb807260ff1
atomize: all automated tactics that "solve" goals;
wenzelm
parents:
10309
diff
changeset
|
799 |
(step_tac cs 1)); |
1587
e7d8a4957bac
Now provides astar versions (thanks to Norbert Voelker)
paulson
parents:
1524
diff
changeset
|
800 |
|
10736 | 801 |
fun slow_astar_tac cs = |
11754 | 802 |
ObjectLogic.atomize_tac THEN' |
10382
1fb807260ff1
atomize: all automated tactics that "solve" goals;
wenzelm
parents:
10309
diff
changeset
|
803 |
SELECT_GOAL |
1fb807260ff1
atomize: all automated tactics that "solve" goals;
wenzelm
parents:
10309
diff
changeset
|
804 |
(ASTAR (has_fewer_prems 1, fn lev => fn thm => size_of_thm thm + !weight_ASTAR * lev) |
1fb807260ff1
atomize: all automated tactics that "solve" goals;
wenzelm
parents:
10309
diff
changeset
|
805 |
(slow_step_tac cs 1)); |
1587
e7d8a4957bac
Now provides astar versions (thanks to Norbert Voelker)
paulson
parents:
1524
diff
changeset
|
806 |
|
1800 | 807 |
(**** Complete tactic, loosely based upon LeanTaP. This tactic is the outcome |
747
bdc066781063
deepen_tac: modified due to outcome of experiments. Its
lcp
parents:
681
diff
changeset
|
808 |
of much experimentation! Changing APPEND to ORELSE below would prove |
bdc066781063
deepen_tac: modified due to outcome of experiments. Its
lcp
parents:
681
diff
changeset
|
809 |
easy theorems faster, but loses completeness -- and many of the harder |
1800 | 810 |
theorems such as 43. ****) |
681
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
811 |
|
747
bdc066781063
deepen_tac: modified due to outcome of experiments. Its
lcp
parents:
681
diff
changeset
|
812 |
(*Non-deterministic! Could always expand the first unsafe connective. |
bdc066781063
deepen_tac: modified due to outcome of experiments. Its
lcp
parents:
681
diff
changeset
|
813 |
That's hard to implement and did not perform better in experiments, due to |
bdc066781063
deepen_tac: modified due to outcome of experiments. Its
lcp
parents:
681
diff
changeset
|
814 |
greater search depth required.*) |
10736 | 815 |
fun dup_step_tac (cs as (CS{dup_netpair,...})) = |
681
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
816 |
biresolve_from_nets_tac dup_netpair; |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
817 |
|
5523 | 818 |
(*Searching to depth m. A variant called nodup_depth_tac appears in clasimp.ML*) |
5757 | 819 |
local |
10736 | 820 |
fun slow_step_tac' cs = appWrappers cs |
9938 | 821 |
(instp_step_tac cs APPEND' dup_step_tac cs); |
10736 | 822 |
in fun depth_tac cs m i state = SELECT_GOAL |
823 |
(safe_steps_tac cs 1 THEN_ELSE |
|
9938 | 824 |
(DEPTH_SOLVE (depth_tac cs m 1), |
825 |
inst0_step_tac cs 1 APPEND COND (K (m=0)) no_tac |
|
826 |
(slow_step_tac' cs 1 THEN DEPTH_SOLVE (depth_tac cs (m-1) 1)) |
|
5757 | 827 |
)) i state; |
828 |
end; |
|
747
bdc066781063
deepen_tac: modified due to outcome of experiments. Its
lcp
parents:
681
diff
changeset
|
829 |
|
10736 | 830 |
(*Search, with depth bound m. |
2173 | 831 |
This is the "entry point", which does safe inferences first.*) |
10736 | 832 |
fun safe_depth_tac cs m = |
833 |
SUBGOAL |
|
681
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
834 |
(fn (prem,i) => |
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
835 |
let val deti = |
9938 | 836 |
(*No Vars in the goal? No need to backtrack between goals.*) |
837 |
case term_vars prem of |
|
10736 | 838 |
[] => DETERM |
9938 | 839 |
| _::_ => I |
10736 | 840 |
in SELECT_GOAL (TRY (safe_tac cs) THEN |
9938 | 841 |
DEPTH_SOLVE (deti (depth_tac cs m 1))) i |
747
bdc066781063
deepen_tac: modified due to outcome of experiments. Its
lcp
parents:
681
diff
changeset
|
842 |
end); |
681
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
843 |
|
2868
17a23a62f82a
New DEEPEN allows giving an upper bound for deepen_tac
paulson
parents:
2813
diff
changeset
|
844 |
fun deepen_tac cs = DEEPEN (2,10) (safe_depth_tac cs); |
681
9b02474744ca
Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents:
469
diff
changeset
|
845 |
|
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
846 |
|
1724 | 847 |
|
15036 | 848 |
(** context dependent claset components **) |
849 |
||
850 |
datatype context_cs = ContextCS of |
|
851 |
{swrappers: (string * (Proof.context -> wrapper)) list, |
|
852 |
uwrappers: (string * (Proof.context -> wrapper)) list}; |
|
853 |
||
854 |
fun context_cs ctxt cs (ContextCS {swrappers, uwrappers}) = |
|
855 |
let |
|
856 |
fun add_wrapper add (name, f) claset = add (claset, (name, f ctxt)); |
|
857 |
in |
|
858 |
cs |> fold_rev (add_wrapper (op addSWrapper)) swrappers |
|
859 |
|> fold_rev (add_wrapper (op addWrapper)) uwrappers |
|
860 |
end; |
|
861 |
||
862 |
fun make_context_cs (swrappers, uwrappers) = |
|
863 |
ContextCS {swrappers = swrappers, uwrappers = uwrappers}; |
|
864 |
||
865 |
val empty_context_cs = make_context_cs ([], []); |
|
866 |
||
867 |
fun merge_context_cs (ctxt_cs1, ctxt_cs2) = |
|
868 |
let |
|
869 |
val ContextCS {swrappers = swrappers1, uwrappers = uwrappers1} = ctxt_cs1; |
|
870 |
val ContextCS {swrappers = swrappers2, uwrappers = uwrappers2} = ctxt_cs2; |
|
871 |
||
872 |
val swrappers' = merge_alists swrappers1 swrappers2; |
|
873 |
val uwrappers' = merge_alists uwrappers1 uwrappers2; |
|
874 |
in make_context_cs (swrappers', uwrappers') end; |
|
875 |
||
876 |
||
877 |
||
17880 | 878 |
(** claset data **) |
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
879 |
|
17880 | 880 |
(* global clasets *) |
1724 | 881 |
|
16424 | 882 |
structure GlobalClaset = TheoryDataFun |
883 |
(struct |
|
7354 | 884 |
val name = "Provers/claset"; |
15036 | 885 |
type T = claset ref * context_cs; |
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
886 |
|
15036 | 887 |
val empty = (ref empty_cs, empty_context_cs); |
16424 | 888 |
fun copy (ref cs, ctxt_cs) = (ref cs, ctxt_cs): T; |
889 |
val extend = copy; |
|
890 |
fun merge _ ((ref cs1, ctxt_cs1), (ref cs2, ctxt_cs2)) = |
|
15036 | 891 |
(ref (merge_cs (cs1, cs2)), merge_context_cs (ctxt_cs1, ctxt_cs2)); |
892 |
fun print _ (ref cs, _) = print_cs cs; |
|
16424 | 893 |
end); |
1724 | 894 |
|
7354 | 895 |
val print_claset = GlobalClaset.print; |
17880 | 896 |
val get_claset = ! o #1 o GlobalClaset.get; |
897 |
||
15036 | 898 |
val get_context_cs = #2 o GlobalClaset.get o ProofContext.theory_of; |
899 |
fun map_context_cs f = GlobalClaset.map (apsnd |
|
900 |
(fn ContextCS {swrappers, uwrappers} => make_context_cs (f (swrappers, uwrappers)))); |
|
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
901 |
|
17880 | 902 |
val change_claset_of = change o #1 o GlobalClaset.get; |
903 |
fun change_claset f = change_claset_of (Context.the_context ()) f; |
|
1800 | 904 |
|
18534
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
905 |
fun claset_of thy = |
17880 | 906 |
let val (cs_ref, ctxt_cs) = GlobalClaset.get thy |
907 |
in context_cs (Context.init_proof thy) (! cs_ref) (ctxt_cs) end; |
|
5028 | 908 |
val claset = claset_of o Context.the_context; |
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
909 |
|
17880 | 910 |
fun CLASET tacf st = tacf (claset_of (Thm.theory_of_thm st)) st; |
911 |
fun CLASET' tacf i st = tacf (claset_of (Thm.theory_of_thm st)) i st; |
|
1724 | 912 |
|
17880 | 913 |
fun AddDs args = change_claset (fn cs => cs addDs args); |
914 |
fun AddEs args = change_claset (fn cs => cs addEs args); |
|
915 |
fun AddIs args = change_claset (fn cs => cs addIs args); |
|
916 |
fun AddSDs args = change_claset (fn cs => cs addSDs args); |
|
917 |
fun AddSEs args = change_claset (fn cs => cs addSEs args); |
|
918 |
fun AddSIs args = change_claset (fn cs => cs addSIs args); |
|
919 |
fun Delrules args = change_claset (fn cs => cs delrules args); |
|
3727
ed63c05d7992
Added Safe_tac; all other default claset tactics now dereference "claset"
paulson
parents:
3705
diff
changeset
|
920 |
|
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
921 |
|
15036 | 922 |
(* context dependent components *) |
923 |
||
924 |
fun add_context_safe_wrapper wrapper = map_context_cs (apfst (merge_alists [wrapper])); |
|
925 |
fun del_context_safe_wrapper name = map_context_cs (apfst (filter_out (equal name o #1))); |
|
926 |
||
927 |
fun add_context_unsafe_wrapper wrapper = map_context_cs (apsnd (merge_alists [wrapper])); |
|
928 |
fun del_context_unsafe_wrapper name = map_context_cs (apsnd (filter_out (equal name o #1))); |
|
929 |
||
930 |
||
5841 | 931 |
(* proof data kind 'Provers/claset' *) |
932 |
||
16424 | 933 |
structure LocalClaset = ProofDataFun |
934 |
(struct |
|
5841 | 935 |
val name = "Provers/claset"; |
936 |
type T = claset; |
|
17880 | 937 |
val init = get_claset; |
15036 | 938 |
fun print ctxt cs = print_cs (context_cs ctxt cs (get_context_cs ctxt)); |
16424 | 939 |
end); |
5841 | 940 |
|
941 |
val print_local_claset = LocalClaset.print; |
|
942 |
val get_local_claset = LocalClaset.get; |
|
943 |
val put_local_claset = LocalClaset.put; |
|
944 |
||
15036 | 945 |
fun local_claset_of ctxt = |
946 |
context_cs ctxt (get_local_claset ctxt) (get_context_cs ctxt); |
|
947 |
||
5841 | 948 |
|
5885 | 949 |
(* attributes *) |
950 |
||
17880 | 951 |
fun change_global_cs f (thy, th) = (change_claset_of thy (fn cs => f (cs, [th])); (thy, th)); |
952 |
fun change_local_cs f (ctxt, th) = (LocalClaset.map (fn cs => f (cs, [th])) ctxt, th); |
|
5885 | 953 |
|
954 |
val safe_dest_global = change_global_cs (op addSDs); |
|
955 |
val safe_elim_global = change_global_cs (op addSEs); |
|
956 |
val safe_intro_global = change_global_cs (op addSIs); |
|
6955 | 957 |
val haz_dest_global = change_global_cs (op addDs); |
958 |
val haz_elim_global = change_global_cs (op addEs); |
|
959 |
val haz_intro_global = change_global_cs (op addIs); |
|
12376
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
960 |
val rule_del_global = change_global_cs (op delrules) o ContextRules.rule_del_global; |
5885 | 961 |
|
16806 | 962 |
val safe_dest_local = change_local_cs (op addSDs); |
963 |
val safe_elim_local = change_local_cs (op addSEs); |
|
964 |
val safe_intro_local = change_local_cs (op addSIs); |
|
965 |
val haz_dest_local = change_local_cs (op addDs); |
|
966 |
val haz_elim_local = change_local_cs (op addEs); |
|
967 |
val haz_intro_local = change_local_cs (op addIs); |
|
12376
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
968 |
val rule_del_local = change_local_cs (op delrules) o ContextRules.rule_del_local; |
5885 | 969 |
|
970 |
||
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
971 |
(* tactics referring to the implicit claset *) |
1800 | 972 |
|
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
973 |
(*the abstraction over the proof state delays the dereferencing*) |
9938 | 974 |
fun Safe_tac st = safe_tac (claset()) st; |
975 |
fun Safe_step_tac i st = safe_step_tac (claset()) i st; |
|
4079
9df5e4f22d96
new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents:
4066
diff
changeset
|
976 |
fun Clarify_step_tac i st = clarify_step_tac (claset()) i st; |
9938 | 977 |
fun Clarify_tac i st = clarify_tac (claset()) i st; |
978 |
fun Step_tac i st = step_tac (claset()) i st; |
|
979 |
fun Fast_tac i st = fast_tac (claset()) i st; |
|
980 |
fun Best_tac i st = best_tac (claset()) i st; |
|
981 |
fun Slow_tac i st = slow_tac (claset()) i st; |
|
982 |
fun Slow_best_tac i st = slow_best_tac (claset()) i st; |
|
983 |
fun Deepen_tac m = deepen_tac (claset()) m; |
|
2066 | 984 |
|
1800 | 985 |
|
10736 | 986 |
end; |
5841 | 987 |
|
988 |
||
989 |
||
5885 | 990 |
(** concrete syntax of attributes **) |
5841 | 991 |
|
992 |
(* add / del rules *) |
|
993 |
||
994 |
val introN = "intro"; |
|
995 |
val elimN = "elim"; |
|
996 |
val destN = "dest"; |
|
9938 | 997 |
val ruleN = "rule"; |
5841 | 998 |
|
12376
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
999 |
fun add_rule xtra haz safe = Attrib.syntax |
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
1000 |
(Scan.lift (Args.query |-- Scan.option Args.nat >> xtra || Args.bang >> K safe || |
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
1001 |
Scan.succeed haz)); |
5841 | 1002 |
|
12376
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
1003 |
fun del_rule att = Attrib.syntax (Scan.lift Args.del >> K att); |
5841 | 1004 |
|
1005 |
||
1006 |
(* setup_attrs *) |
|
1007 |
||
1008 |
val setup_attrs = Attrib.add_attributes |
|
18534
6799b38ed872
added classical_rule, which replaces Data.make_elim;
wenzelm
parents:
18374
diff
changeset
|
1009 |
[("swapped", (swapped, swapped), "classical swap of introduction rule"), |
12376
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
1010 |
(destN, |
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
1011 |
(add_rule ContextRules.dest_query_global haz_dest_global safe_dest_global, |
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
1012 |
add_rule ContextRules.dest_query_local haz_dest_local safe_dest_local), |
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
1013 |
"declaration of destruction rule"), |
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
1014 |
(elimN, |
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
1015 |
(add_rule ContextRules.elim_query_global haz_elim_global safe_elim_global, |
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
1016 |
add_rule ContextRules.elim_query_local haz_elim_local safe_elim_local), |
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
1017 |
"declaration of elimination rule"), |
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
1018 |
(introN, |
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
1019 |
(add_rule ContextRules.intro_query_global haz_intro_global safe_intro_global, |
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
1020 |
add_rule ContextRules.intro_query_local haz_intro_local safe_intro_local), |
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
1021 |
"declaration of introduction rule"), |
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
1022 |
(ruleN, (del_rule rule_del_global, del_rule rule_del_local), |
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
1023 |
"remove declaration of intro/elim/dest rule")]; |
5841 | 1024 |
|
1025 |
||
1026 |
||
7230 | 1027 |
(** proof methods **) |
1028 |
||
14605
9de4d64eee3b
'instance' and intro_classes now handle general sorts;
wenzelm
parents:
13525
diff
changeset
|
1029 |
fun METHOD_CLASET tac ctxt = |
15036 | 1030 |
Method.METHOD (tac ctxt (local_claset_of ctxt)); |
5841 | 1031 |
|
8098 | 1032 |
fun METHOD_CLASET' tac ctxt = |
15036 | 1033 |
Method.METHOD (HEADGOAL o tac ctxt (local_claset_of ctxt)); |
7230 | 1034 |
|
1035 |
||
1036 |
local |
|
1037 |
||
12376
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
1038 |
fun some_rule_tac ctxt (CS {xtra_netpair, ...}) facts = SUBGOAL (fn (goal, i) => |
5841 | 1039 |
let |
12401 | 1040 |
val [rules1, rules2, rules4] = ContextRules.find_rules false facts goal ctxt; |
1041 |
val rules3 = ContextRules.find_rules_netpair true facts goal xtra_netpair; |
|
12376
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
1042 |
val rules = rules1 @ rules2 @ rules3 @ rules4; |
18223 | 1043 |
val ruleq = Drule.multi_resolves facts rules; |
12376
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
1044 |
in |
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
1045 |
Method.trace ctxt rules; |
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
1046 |
fn st => Seq.flat (Seq.map (fn rule => Tactic.rtac rule i st) ruleq) |
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
1047 |
end); |
5841 | 1048 |
|
12376
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
1049 |
fun rule_tac [] ctxt cs facts = some_rule_tac ctxt cs facts |
10394 | 1050 |
| rule_tac rules _ _ facts = Method.rule_tac rules facts; |
7281 | 1051 |
|
10382
1fb807260ff1
atomize: all automated tactics that "solve" goals;
wenzelm
parents:
10309
diff
changeset
|
1052 |
fun default_tac rules ctxt cs facts = |
14605
9de4d64eee3b
'instance' and intro_classes now handle general sorts;
wenzelm
parents:
13525
diff
changeset
|
1053 |
HEADGOAL (rule_tac rules ctxt cs facts) ORELSE |
10382
1fb807260ff1
atomize: all automated tactics that "solve" goals;
wenzelm
parents:
10309
diff
changeset
|
1054 |
AxClass.default_intro_classes_tac facts; |
10309 | 1055 |
|
7230 | 1056 |
in |
7281 | 1057 |
val rule = METHOD_CLASET' o rule_tac; |
14605
9de4d64eee3b
'instance' and intro_classes now handle general sorts;
wenzelm
parents:
13525
diff
changeset
|
1058 |
val default = METHOD_CLASET o default_tac; |
7230 | 1059 |
end; |
5841 | 1060 |
|
1061 |
||
7230 | 1062 |
(* contradiction method *) |
6502 | 1063 |
|
7425 | 1064 |
val contradiction = Method.rule [Data.not_elim, Data.not_elim COMP Drule.swap_prems_rl]; |
6502 | 1065 |
|
1066 |
||
1067 |
(* automatic methods *) |
|
5841 | 1068 |
|
5927 | 1069 |
val cla_modifiers = |
12376
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
1070 |
[Args.$$$ destN -- Args.bang_colon >> K ((I, safe_dest_local): Method.modifier), |
10034 | 1071 |
Args.$$$ destN -- Args.colon >> K (I, haz_dest_local), |
1072 |
Args.$$$ elimN -- Args.bang_colon >> K (I, safe_elim_local), |
|
1073 |
Args.$$$ elimN -- Args.colon >> K (I, haz_elim_local), |
|
1074 |
Args.$$$ introN -- Args.bang_colon >> K (I, safe_intro_local), |
|
1075 |
Args.$$$ introN -- Args.colon >> K (I, haz_intro_local), |
|
1076 |
Args.del -- Args.colon >> K (I, rule_del_local)]; |
|
5927 | 1077 |
|
7559 | 1078 |
fun cla_meth tac prems ctxt = Method.METHOD (fn facts => |
15036 | 1079 |
ALLGOALS (Method.insert_tac (prems @ facts)) THEN tac (local_claset_of ctxt)); |
7132 | 1080 |
|
7559 | 1081 |
fun cla_meth' tac prems ctxt = Method.METHOD (fn facts => |
15036 | 1082 |
HEADGOAL (Method.insert_tac (prems @ facts) THEN' tac (local_claset_of ctxt))); |
5841 | 1083 |
|
7559 | 1084 |
val cla_method = Method.bang_sectioned_args cla_modifiers o cla_meth; |
1085 |
val cla_method' = Method.bang_sectioned_args cla_modifiers o cla_meth'; |
|
5841 | 1086 |
|
1087 |
||
1088 |
||
1089 |
(** setup_methods **) |
|
1090 |
||
1091 |
val setup_methods = Method.add_methods |
|
12376
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
1092 |
[("default", Method.thms_ctxt_args default, "apply some intro/elim rule (potentially classical)"), |
480303e3fa08
simplified (and clarified) integration with Pure/ContextRules;
wenzelm
parents:
12362
diff
changeset
|
1093 |
("rule", Method.thms_ctxt_args rule, "apply some intro/elim rule (potentially classical)"), |
6502 | 1094 |
("contradiction", Method.no_args contradiction, "proof by contradiction"), |
10821 | 1095 |
("clarify", cla_method' (CHANGED_PROP oo clarify_tac), "repeatedly apply safe steps"), |
7004 | 1096 |
("fast", cla_method' fast_tac, "classical prover (depth-first)"), |
9806 | 1097 |
("slow", cla_method' slow_tac, "classical prover (slow depth-first)"), |
9773 | 1098 |
("best", cla_method' best_tac, "classical prover (best-first)"), |
18015 | 1099 |
("deepen", cla_method' (fn cs => deepen_tac cs 4), "classical prover (iterative deepening)"), |
10821 | 1100 |
("safe", cla_method (CHANGED_PROP o safe_tac), "classical prover (apply safe rules)")]; |
5841 | 1101 |
|
1102 |
||
1103 |
||
1104 |
(** theory setup **) |
|
1105 |
||
16806 | 1106 |
val setup = [GlobalClaset.init, LocalClaset.init, setup_attrs, setup_methods]; |
5841 | 1107 |
|
1108 |
||
8667 | 1109 |
|
1110 |
(** outer syntax **) |
|
1111 |
||
1112 |
val print_clasetP = |
|
1113 |
OuterSyntax.improper_command "print_claset" "print context of Classical Reasoner" |
|
17057 | 1114 |
OuterKeyword.diag |
9513 | 1115 |
(Scan.succeed (Toplevel.no_timing o Toplevel.unknown_context o (Toplevel.keep |
9010 | 1116 |
(Toplevel.node_case print_claset (print_local_claset o Proof.context_of))))); |
8667 | 1117 |
|
1118 |
val _ = OuterSyntax.add_parsers [print_clasetP]; |
|
1119 |
||
1120 |
||
5841 | 1121 |
end; |