src/Provers/classical.ML
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type claset: added extra I/E rules;
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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 intr, 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 addSaltern addbefore addaltern
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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 CLASET_THY_DATA =
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sig
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  val clasetN: string
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  val clasetK: Object.kind
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  exception ClasetData of Object.T ref
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  val setup: (theory -> theory) list
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  val fix_methods: Object.T * (Object.T -> Object.T) * (Object.T -> Object.T) *
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    (Object.T * Object.T -> Object.T) * (Sign.sg -> Object.T -> unit) -> unit
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end;
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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: (* BLAST_DATA in blast.ML dependent on this *)
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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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		 xtraIs: thm list, xtraEs: 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, xtra_netpair: 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 addSaltern 	: claset * (string * (int -> tactic)) -> claset
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  val addbefore 	: claset * (string * (int -> tactic)) -> claset
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  val addaltern	 	: 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 trace_rules	: bool ref
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  val claset_ref_of_sg: Sign.sg -> claset ref
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  val claset_ref_of: theory -> claset ref
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  val claset_of_sg: Sign.sg -> claset
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  val claset_of: theory -> 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 claset: unit -> claset
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  val claset_ref: unit -> claset ref
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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 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 swap		: thm                 (* ~P ==> (~Q ==> P) ==> Q *)
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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 AddXDs		: thm list -> unit
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  val AddXEs		: thm list -> unit
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  val AddXIs		: 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 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 xtra_dest_global: theory attribute
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  val xtra_elim_global: theory attribute
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  val xtra_intro_global: theory attribute
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  val delrule_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 xtra_dest_local: Proof.context attribute
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  val xtra_elim_local: Proof.context attribute
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  val xtra_intro_local: Proof.context attribute
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  val delrule_local: Proof.context attribute
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  val cla_modifiers: (Args.T list -> (Proof.context attribute * Args.T list)) list
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  val cla_method: (claset -> tactic) -> Args.src -> Proof.context -> Proof.method
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  val cla_method': (claset -> int -> tactic) -> Args.src -> Proof.context -> Proof.method
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  val single_tac: claset -> thm list -> int -> tactic
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  val setup: (theory -> theory) list
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end;
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structure ClasetThyData: CLASET_THY_DATA =
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struct
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(* data kind claset -- forward declaration *)
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val clasetN = "Provers/claset";
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val clasetK = Object.kind clasetN;
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exception ClasetData of Object.T ref;
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local
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  fun undef _ = raise Match;
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  val empty_ref = ref ERROR;
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  val copy_fn = ref (undef: Object.T -> Object.T);
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  val prep_ext_fn = ref (undef: Object.T -> Object.T);
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  val merge_fn = ref (undef: Object.T * Object.T -> Object.T);
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  val print_fn = ref (undef: Sign.sg -> Object.T -> unit);
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  val empty = ClasetData empty_ref;
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  fun copy exn = ! copy_fn exn;
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  fun prep_ext exn = ! prep_ext_fn exn;
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  fun merge exn = ! merge_fn exn;
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  fun print sg exn = ! print_fn sg exn;
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in
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  val setup = [Theory.init_data clasetK (empty, copy, prep_ext, merge, print)];
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  fun fix_methods (e, cp, ext, mrg, prt) =
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    (empty_ref := e; copy_fn := cp; prep_ext_fn := ext; merge_fn := mrg; print_fn := prt);
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end;
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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 ClasetThyData Data in
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(*** Useful tactics for classical reasoning ***)
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val imp_elim = (*cannot use bind_thm within a structure!*)
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  store_thm ("imp_elim", make_elim mp);
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(*Prove goal that assumes both P and ~P.  
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  No backtracking if it finds an equal assumption.  Perhaps should call
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  ematch_tac instead of eresolve_tac, but then cannot prove ZF/cantor.*)
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val contr_tac = eresolve_tac [not_elim]  THEN'  
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                (eq_assume_tac ORELSE' assume_tac);
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(*Finds P-->Q and P in the assumptions, replaces implication by Q.
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  Could do the same thing for P<->Q and P... *)
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fun mp_tac i = eresolve_tac [not_elim, imp_elim] i  THEN  assume_tac i;
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(*Like mp_tac but instantiates no variables*)
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fun eq_mp_tac i = ematch_tac [not_elim, imp_elim] i  THEN  eq_assume_tac i;
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val swap =
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  store_thm ("swap", rule_by_tactic (etac thin_rl 1) (not_elim RS classical));
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(*Creates rules to eliminate ~A, from rules to introduce A*)
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fun swapify intrs = intrs RLN (2, [swap]);
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(*Uses introduction rules in the normal way, or on negated assumptions,
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  trying rules in order. *)
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fun swap_res_tac rls = 
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    let fun addrl (rl,brls) = (false, rl) :: (true, rl RSN (2,swap)) :: brls
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    in  assume_tac 	ORELSE' 
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	contr_tac 	ORELSE' 
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        biresolve_tac (foldr addrl (rls,[]))
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    end;
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(*Duplication of hazardous rules, for complete provers*)
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fun dup_intr th = zero_var_indexes (th RS classical);
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fun dup_elim th = 
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    th RSN (2, revcut_rl) |> assumption 2 |> Seq.hd |> 
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    rule_by_tactic (TRYALL (etac revcut_rl))
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    handle _ => error ("Bad format for elimination rule\n" ^ string_of_thm th);
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(**** Classical rule sets ****)
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datatype claset =
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  CS of {safeIs		: thm list,		(*safe introduction rules*)
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	 safeEs		: thm list,		(*safe elimination rules*)
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	 hazIs		: thm list,		(*unsafe introduction rules*)
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	 hazEs		: thm list,		(*unsafe elimination rules*)
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	 xtraIs		: thm list,		(*extra introduction rules*)
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	 xtraEs		: thm list,		(*extra elimination rules*)
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	 swrappers	: (string * wrapper) list, (*for transf. safe_step_tac*)
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	 uwrappers	: (string * wrapper) list, (*for transforming step_tac*)
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	 safe0_netpair	: netpair,		(*nets for trivial cases*)
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	 safep_netpair	: netpair,		(*nets for >0 subgoals*)
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	 haz_netpair  	: netpair,		(*nets for unsafe rules*)
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	 dup_netpair	: netpair,		(*nets for duplication*)
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	 xtra_netpair	: netpair};		(*nets for extra rules*)
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(*Desired invariants are
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	safe0_netpair = build safe0_brls,
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	safep_netpair = build safep_brls,
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	haz_netpair = build (joinrules(hazIs, hazEs)),
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	dup_netpair = build (joinrules(map dup_intr hazIs, 
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				       map dup_elim hazEs)),
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	xtra_netpair = build (joinrules(xtraIs, xtraEs))}
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where build = build_netpair(Net.empty,Net.empty), 
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      safe0_brls contains all brules that solve the subgoal, and
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      safep_brls contains all brules that generate 1 or more new subgoals.
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The theorem lists are largely comments, though they are used in merge_cs and print_cs.
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Nets must be built incrementally, to save space and time.
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   291
*)
0
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clasohm
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6502
bc30e13b36a8 improved 'single' method;
wenzelm
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   293
val empty_netpair = (Net.empty, Net.empty);
bc30e13b36a8 improved 'single' method;
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parents: 6492
diff changeset
   294
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val empty_cs = 
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   296
  CS{safeIs	= [],
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     safeEs	= [],
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     hazIs	= [],
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   299
     hazEs	= [],
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     xtraIs	= [],
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     xtraEs	= [],
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70dd492a1698 changed wrapper mechanism of classical reasoner
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     swrappers  = [],
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oheimb
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   303
     uwrappers  = [],
6502
bc30e13b36a8 improved 'single' method;
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parents: 6492
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   304
     safe0_netpair = empty_netpair,
bc30e13b36a8 improved 'single' method;
wenzelm
parents: 6492
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   305
     safep_netpair = empty_netpair,
bc30e13b36a8 improved 'single' method;
wenzelm
parents: 6492
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   306
     haz_netpair   = empty_netpair,
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
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   307
     dup_netpair   = empty_netpair,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   308
     xtra_netpair  = empty_netpair};
0
a5a9c433f639 Initial revision
clasohm
parents:
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   309
6955
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wenzelm
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   310
fun print_cs (CS {safeIs, safeEs, hazIs, hazEs, xtraIs, xtraEs, ...}) =
3546
de164676a202 improved print_cs;
wenzelm
parents: 3537
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   311
  let val pretty_thms = map Display.pretty_thm in
de164676a202 improved print_cs;
wenzelm
parents: 3537
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   312
    Pretty.writeln (Pretty.big_list "safe introduction rules:" (pretty_thms safeIs));
4624
795b5b624c02 tuned print_cs;
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parents: 4392
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   313
    Pretty.writeln (Pretty.big_list "unsafe introduction rules:" (pretty_thms hazIs));
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
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   314
    Pretty.writeln (Pretty.big_list "extra introduction rules:" (pretty_thms xtraIs));
4625
wenzelm
parents: 4624
diff changeset
   315
    Pretty.writeln (Pretty.big_list "safe elimination rules:" (pretty_thms safeEs));
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   316
    Pretty.writeln (Pretty.big_list "unsafe elimination rules:" (pretty_thms hazEs));
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
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   317
    Pretty.writeln (Pretty.big_list "extra elimination rules:" (pretty_thms xtraEs))
3546
de164676a202 improved print_cs;
wenzelm
parents: 3537
diff changeset
   318
  end;
0
a5a9c433f639 Initial revision
clasohm
parents:
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   319
4653
d60f76680bf4 renamed rep_claset to rep_cs
oheimb
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   320
fun rep_cs (CS args) = args;
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   321
4651
70dd492a1698 changed wrapper mechanism of classical reasoner
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parents: 4646
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   322
local 
70dd492a1698 changed wrapper mechanism of classical reasoner
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   323
  fun calc_wrap l tac = foldr (fn ((name,tacf),w) => tacf w) (l, tac);
70dd492a1698 changed wrapper mechanism of classical reasoner
oheimb
parents: 4646
diff changeset
   324
in 
70dd492a1698 changed wrapper mechanism of classical reasoner
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   325
  fun appSWrappers (CS{swrappers,...}) = calc_wrap swrappers;
70dd492a1698 changed wrapper mechanism of classical reasoner
oheimb
parents: 4646
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   326
  fun appWrappers  (CS{uwrappers,...}) = calc_wrap uwrappers;
70dd492a1698 changed wrapper mechanism of classical reasoner
oheimb
parents: 4646
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   327
end;
1073
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
diff changeset
   328
4079
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
   329
1800
3d9d2ef0cd3b Now implements delrules
paulson
parents: 1724
diff changeset
   330
(*** Adding (un)safe introduction or elimination rules.
1073
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
diff changeset
   331
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
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   332
    In case of overlap, new rules are tried BEFORE old ones!!
1800
3d9d2ef0cd3b Now implements delrules
paulson
parents: 1724
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   333
***)
0
a5a9c433f639 Initial revision
clasohm
parents:
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   334
1073
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
diff changeset
   335
(*For use with biresolve_tac.  Combines intr rules with swap to handle negated
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
diff changeset
   336
  assumptions.  Pairs elim rules with true. *)
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lcp
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   337
fun joinrules (intrs,elims) =  
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lcp
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   338
    (map (pair true) (elims @ swapify intrs)  @
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
diff changeset
   339
     map (pair false) intrs);
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
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   340
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
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   341
(*Priority: prefer rules with fewest subgoals, 
1231
91d2c1bb5803 clarified comment
paulson
parents: 1073
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   342
  then rules added most recently (preferring the head of the list).*)
1073
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
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   343
fun tag_brls k [] = []
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lcp
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   344
  | tag_brls k (brl::brls) =
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lcp
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   345
      (1000000*subgoals_of_brl brl + k, brl) :: 
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
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   346
      tag_brls (k+1) brls;
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lcp
parents: 1010
diff changeset
   347
1800
3d9d2ef0cd3b Now implements delrules
paulson
parents: 1724
diff changeset
   348
fun insert_tagged_list kbrls netpr = foldr insert_tagged_brl (kbrls, netpr);
1073
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
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   349
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
diff changeset
   350
(*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
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   351
  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
   352
  new insertions the lowest priority.*)
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
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   353
fun insert (nI,nE) = insert_tagged_list o (tag_brls (~(2*nI+nE))) o joinrules;
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
diff changeset
   354
1800
3d9d2ef0cd3b Now implements delrules
paulson
parents: 1724
diff changeset
   355
fun delete_tagged_list brls netpr = foldr delete_tagged_brl (brls, netpr);
1073
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
diff changeset
   356
1800
3d9d2ef0cd3b Now implements delrules
paulson
parents: 1724
diff changeset
   357
val delete = delete_tagged_list o joinrules;
3d9d2ef0cd3b Now implements delrules
paulson
parents: 1724
diff changeset
   358
2813
cc4c816dafdc delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents: 2689
diff changeset
   359
val mem_thm = gen_mem eq_thm
cc4c816dafdc delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents: 2689
diff changeset
   360
and rem_thm = gen_rem eq_thm;
cc4c816dafdc delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents: 2689
diff changeset
   361
1927
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   362
(*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
   363
  is still allowed.*)
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   364
fun warn_dup th (CS{safeIs, safeEs, hazIs, hazEs, xtraIs, xtraEs, ...}) = 
2813
cc4c816dafdc delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents: 2689
diff changeset
   365
       if mem_thm (th, safeIs) then 
4079
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
   366
	 warning ("Rule already in claset as Safe Intr\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
   367
  else if mem_thm (th, safeEs) then
4079
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
   368
         warning ("Rule already in claset as Safe Elim\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
   369
  else if mem_thm (th, hazIs) then 
4079
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
   370
         warning ("Rule already in claset as unsafe Intr\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
   371
  else if mem_thm (th, hazEs) then 
4079
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
   372
         warning ("Rule already in claset as unsafe Elim\n" ^ string_of_thm th)
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   373
  else if mem_thm (th, xtraIs) then 
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   374
         warning ("Rule already in claset as extra Intr\n" ^ string_of_thm th)
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   375
  else if mem_thm (th, xtraEs) then 
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   376
         warning ("Rule already in claset as extra Elim\n" ^ string_of_thm th)
1927
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   377
  else ();
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   378
1800
3d9d2ef0cd3b Now implements delrules
paulson
parents: 1724
diff changeset
   379
(*** Safe rules ***)
982
4fe0b642b7d5 Addition of wrappers for integration with the simplifier.
lcp
parents: 747
diff changeset
   380
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   381
fun addSI (cs as CS{safeIs, safeEs, hazIs, hazEs, xtraIs, xtraEs, swrappers, uwrappers, 
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   382
	      safe0_netpair, safep_netpair, haz_netpair, dup_netpair, xtra_netpair},
1927
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   383
	   th)  =
2813
cc4c816dafdc delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents: 2689
diff changeset
   384
  if mem_thm (th, safeIs) then 
4079
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
   385
	 (warning ("Ignoring duplicate Safe Intr\n" ^ string_of_thm th);
1927
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   386
	  cs)
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   387
  else
1073
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
diff changeset
   388
  let val (safe0_rls, safep_rls) = (*0 subgoals vs 1 or more*)
1927
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   389
          partition (fn rl => nprems_of rl=0) [th]
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   390
      val nI = length safeIs + 1
1073
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
diff changeset
   391
      and nE = length safeEs
1927
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   392
  in warn_dup th cs;
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   393
     CS{safeIs	= th::safeIs,
1073
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
diff changeset
   394
        safe0_netpair = insert (nI,nE) (safe0_rls, []) safe0_netpair,
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
diff changeset
   395
	safep_netpair = insert (nI,nE) (safep_rls, []) safep_netpair,
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
diff changeset
   396
	safeEs	= safeEs,
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
diff changeset
   397
	hazIs	= hazIs,
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
diff changeset
   398
	hazEs	= hazEs,
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   399
	xtraIs	= xtraIs,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   400
	xtraEs	= xtraEs,
4651
70dd492a1698 changed wrapper mechanism of classical reasoner
oheimb
parents: 4646
diff changeset
   401
	swrappers    = swrappers,
70dd492a1698 changed wrapper mechanism of classical reasoner
oheimb
parents: 4646
diff changeset
   402
	uwrappers    = uwrappers,
2630
7a962f6829ca moved THEN_MAYBE to Pure/tctical.ML
oheimb
parents: 2173
diff changeset
   403
	haz_netpair  = haz_netpair,
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   404
	dup_netpair  = dup_netpair,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   405
	xtra_netpair = xtra_netpair}
1073
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
diff changeset
   406
  end;
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
diff changeset
   407
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   408
fun addSE (cs as CS{safeIs, safeEs, hazIs, hazEs, xtraIs, xtraEs, swrappers, uwrappers, 
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   409
		    safe0_netpair, safep_netpair, haz_netpair, dup_netpair, xtra_netpair},
1927
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   410
	   th)  =
2813
cc4c816dafdc delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents: 2689
diff changeset
   411
  if mem_thm (th, safeEs) then 
4079
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
   412
	 (warning ("Ignoring duplicate Safe Elim\n" ^ string_of_thm th);
1927
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   413
	  cs)
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   414
  else
1073
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
diff changeset
   415
  let val (safe0_rls, safep_rls) = (*0 subgoals vs 1 or more*)
1927
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   416
          partition (fn rl => nprems_of rl=1) [th]
1073
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
diff changeset
   417
      val nI = length safeIs
1927
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   418
      and nE = length safeEs + 1
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   419
  in warn_dup th cs;
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   420
     CS{safeEs	= th::safeEs,
1073
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
diff changeset
   421
        safe0_netpair = insert (nI,nE) ([], safe0_rls) safe0_netpair,
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
diff changeset
   422
	safep_netpair = insert (nI,nE) ([], safep_rls) safep_netpair,
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
diff changeset
   423
	safeIs	= safeIs,
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
diff changeset
   424
	hazIs	= hazIs,
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
diff changeset
   425
	hazEs	= hazEs,
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   426
	xtraIs	= xtraIs,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   427
	xtraEs	= xtraEs,
4651
70dd492a1698 changed wrapper mechanism of classical reasoner
oheimb
parents: 4646
diff changeset
   428
	swrappers    = swrappers,
70dd492a1698 changed wrapper mechanism of classical reasoner
oheimb
parents: 4646
diff changeset
   429
	uwrappers    = uwrappers,
2630
7a962f6829ca moved THEN_MAYBE to Pure/tctical.ML
oheimb
parents: 2173
diff changeset
   430
	haz_netpair  = haz_netpair,
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   431
	dup_netpair  = dup_netpair,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   432
	xtra_netpair = xtra_netpair}
1073
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
diff changeset
   433
  end;
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   434
1927
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   435
fun rev_foldl f (e, l) = foldl f (e, rev l);
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   436
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   437
val op addSIs = rev_foldl addSI;
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   438
val op addSEs = rev_foldl addSE;
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   439
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   440
fun cs addSDs ths = cs addSEs (map make_elim ths);
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   441
1073
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
diff changeset
   442
1800
3d9d2ef0cd3b Now implements delrules
paulson
parents: 1724
diff changeset
   443
(*** Hazardous (unsafe) rules ***)
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   444
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   445
fun addI (cs as CS{safeIs, safeEs, hazIs, hazEs, xtraIs, xtraEs, swrappers, uwrappers, 
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   446
		   safe0_netpair, safep_netpair, haz_netpair, dup_netpair, xtra_netpair},
1927
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   447
	  th)=
2813
cc4c816dafdc delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents: 2689
diff changeset
   448
  if mem_thm (th, hazIs) then 
4079
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
   449
	 (warning ("Ignoring duplicate unsafe Intr\n" ^ string_of_thm th);
1927
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   450
	  cs)
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   451
  else
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   452
  let val nI = length hazIs + 1
1073
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
diff changeset
   453
      and nE = length hazEs
1927
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   454
  in warn_dup th cs;
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   455
     CS{hazIs	= th::hazIs,
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   456
	haz_netpair = insert (nI,nE) ([th], []) haz_netpair,
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   457
	dup_netpair = insert (nI,nE) (map dup_intr [th], []) dup_netpair,
1073
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
diff changeset
   458
	safeIs 	= safeIs, 
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
diff changeset
   459
	safeEs	= safeEs,
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
diff changeset
   460
	hazEs	= hazEs,
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   461
	xtraIs	= xtraIs,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   462
	xtraEs	= xtraEs,
4651
70dd492a1698 changed wrapper mechanism of classical reasoner
oheimb
parents: 4646
diff changeset
   463
	swrappers     = swrappers,
70dd492a1698 changed wrapper mechanism of classical reasoner
oheimb
parents: 4646
diff changeset
   464
	uwrappers     = uwrappers,
1073
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
diff changeset
   465
	safe0_netpair = safe0_netpair,
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   466
	safep_netpair = safep_netpair,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   467
	xtra_netpair = xtra_netpair}
1073
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
diff changeset
   468
  end;
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
diff changeset
   469
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   470
fun addE (cs as CS{safeIs, safeEs, hazIs, hazEs, xtraIs, xtraEs, swrappers, uwrappers, 
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   471
		   safe0_netpair, safep_netpair, haz_netpair, dup_netpair, xtra_netpair},
1927
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   472
	  th) =
2813
cc4c816dafdc delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents: 2689
diff changeset
   473
  if mem_thm (th, hazEs) then 
4079
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
   474
	 (warning ("Ignoring duplicate unsafe Elim\n" ^ string_of_thm th);
1927
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   475
	  cs)
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   476
  else
1073
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
diff changeset
   477
  let val nI = length hazIs 
1927
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   478
      and nE = length hazEs + 1
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   479
  in warn_dup th cs;
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   480
     CS{hazEs	= th::hazEs,
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   481
	haz_netpair = insert (nI,nE) ([], [th]) haz_netpair,
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   482
	dup_netpair = insert (nI,nE) ([], map dup_elim [th]) dup_netpair,
1073
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
diff changeset
   483
	safeIs	= safeIs, 
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
diff changeset
   484
	safeEs	= safeEs,
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
diff changeset
   485
	hazIs	= hazIs,
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   486
	xtraIs	= xtraIs,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   487
	xtraEs	= xtraEs,
4651
70dd492a1698 changed wrapper mechanism of classical reasoner
oheimb
parents: 4646
diff changeset
   488
	swrappers     = swrappers,
70dd492a1698 changed wrapper mechanism of classical reasoner
oheimb
parents: 4646
diff changeset
   489
	uwrappers     = uwrappers,
1073
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
diff changeset
   490
	safe0_netpair = safe0_netpair,
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   491
	safep_netpair = safep_netpair,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   492
	xtra_netpair = xtra_netpair}
1073
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
diff changeset
   493
  end;
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   494
1927
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   495
val op addIs = rev_foldl addI;
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   496
val op addEs = rev_foldl addE;
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   497
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   498
fun cs addDs ths = cs addEs (map make_elim ths);
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   499
1073
b3f190995bc9 Recoded addSIs, etc., so that nets are built incrementally
lcp
parents: 1010
diff changeset
   500
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   501
(*** Extra (single step) rules ***)
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   502
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   503
fun addXI (cs as CS{safeIs, safeEs, hazIs, hazEs, xtraIs, xtraEs, swrappers, uwrappers,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   504
		   safe0_netpair, safep_netpair, haz_netpair, dup_netpair, xtra_netpair},
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   505
	  th)=
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   506
  if mem_thm (th, xtraIs) then 
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   507
	 (warning ("Ignoring duplicate extra Intr\n" ^ string_of_thm th);
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   508
	  cs)
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   509
  else
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   510
  let val nI = length xtraIs + 1
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   511
      and nE = length xtraEs
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   512
  in warn_dup th cs;
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   513
     CS{xtraIs	= th::xtraIs,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   514
	xtra_netpair = insert (nI,nE) ([th], []) xtra_netpair,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   515
	safeIs 	= safeIs, 
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   516
	safeEs	= safeEs,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   517
	hazIs	= hazIs,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   518
	hazEs	= hazEs,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   519
	xtraEs	= xtraEs,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   520
	swrappers     = swrappers,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   521
	uwrappers     = uwrappers,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   522
	safe0_netpair = safe0_netpair,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   523
	safep_netpair = safep_netpair,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   524
	haz_netpair  = haz_netpair,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   525
	dup_netpair  = dup_netpair}
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   526
  end;
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   527
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   528
fun addXE (cs as CS{safeIs, safeEs, hazIs, hazEs, xtraIs, xtraEs, swrappers, uwrappers, 
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   529
		   safe0_netpair, safep_netpair, haz_netpair, dup_netpair, xtra_netpair},
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   530
	  th) =
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   531
  if mem_thm (th, xtraEs) then
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   532
	 (warning ("Ignoring duplicate extra Elim\n" ^ string_of_thm th);
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   533
	  cs)
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   534
  else
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   535
  let val nI = length xtraIs 
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   536
      and nE = length xtraEs + 1
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   537
  in warn_dup th cs;
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   538
     CS{xtraEs	= th::xtraEs,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   539
	xtra_netpair = insert (nI,nE) ([], [th]) xtra_netpair,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   540
	safeIs	= safeIs, 
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   541
	safeEs	= safeEs,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   542
	hazIs	= hazIs,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   543
	hazEs	= hazEs,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   544
	xtraIs	= xtraIs,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   545
	swrappers     = swrappers,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   546
	uwrappers     = uwrappers,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   547
	safe0_netpair = safe0_netpair,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   548
	safep_netpair = safep_netpair,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   549
	haz_netpair  = haz_netpair,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   550
	dup_netpair  = dup_netpair}
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   551
  end;
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   552
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   553
infix 4 addXIs addXEs addXDs;
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   554
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   555
val op addXIs = rev_foldl addXI;
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   556
val op addXEs = rev_foldl addXE;
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   557
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   558
fun cs addXDs ths = cs addXEs (map make_elim ths);
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   559
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   560
1800
3d9d2ef0cd3b Now implements delrules
paulson
parents: 1724
diff changeset
   561
(*** Deletion of rules 
3d9d2ef0cd3b Now implements delrules
paulson
parents: 1724
diff changeset
   562
     Working out what to delete, requires repeating much of the code used
3d9d2ef0cd3b Now implements delrules
paulson
parents: 1724
diff changeset
   563
	to insert.
1927
6f97cb16e453 New classical reasoner: warns of, and ignores, redundant rules.
paulson
parents: 1814
diff changeset
   564
     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
   565
        searches in all the lists and chooses the relevant delXX functions.
1800
3d9d2ef0cd3b Now implements delrules
paulson
parents: 1724
diff changeset
   566
***)
3d9d2ef0cd3b Now implements delrules
paulson
parents: 1724
diff changeset
   567
2813
cc4c816dafdc delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents: 2689
diff changeset
   568
fun delSI th 
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   569
          (cs as CS{safeIs, safeEs, hazIs, hazEs, xtraIs, xtraEs, swrappers, uwrappers,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   570
		    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
   571
 if mem_thm (th, safeIs) then
cc4c816dafdc delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents: 2689
diff changeset
   572
   let val (safe0_rls, safep_rls) = partition (fn rl => nprems_of rl=0) [th]
cc4c816dafdc delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents: 2689
diff changeset
   573
   in CS{safe0_netpair = delete (safe0_rls, []) safe0_netpair,
cc4c816dafdc delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents: 2689
diff changeset
   574
	 safep_netpair = delete (safep_rls, []) safep_netpair,
cc4c816dafdc delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents: 2689
diff changeset
   575
	 safeIs	= rem_thm (safeIs,th),
cc4c816dafdc delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents: 2689
diff changeset
   576
	 safeEs	= safeEs,
cc4c816dafdc delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents: 2689
diff changeset
   577
	 hazIs	= hazIs,
cc4c816dafdc delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents: 2689
diff changeset
   578
	 hazEs	= hazEs,
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   579
	 xtraIs	= xtraIs,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   580
	 xtraEs	= xtraEs,
4651
70dd492a1698 changed wrapper mechanism of classical reasoner
oheimb
parents: 4646
diff changeset
   581
	 swrappers    = swrappers,
70dd492a1698 changed wrapper mechanism of classical reasoner
oheimb
parents: 4646
diff changeset
   582
	 uwrappers    = uwrappers,
2813
cc4c816dafdc delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents: 2689
diff changeset
   583
	 haz_netpair  = haz_netpair,
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   584
	 dup_netpair  = dup_netpair,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   585
	 xtra_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
   586
   end
cc4c816dafdc delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents: 2689
diff changeset
   587
 else cs;
1800
3d9d2ef0cd3b Now implements delrules
paulson
parents: 1724
diff changeset
   588
2813
cc4c816dafdc delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents: 2689
diff changeset
   589
fun delSE th
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   590
          (cs as CS{safeIs, safeEs, hazIs, hazEs, xtraIs, xtraEs, swrappers, uwrappers, 
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   591
	            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
   592
 if mem_thm (th, safeEs) then
cc4c816dafdc delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents: 2689
diff changeset
   593
   let val (safe0_rls, safep_rls) = partition (fn rl => nprems_of rl=1) [th]
cc4c816dafdc delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents: 2689
diff changeset
   594
   in CS{safe0_netpair = delete ([], safe0_rls) safe0_netpair,
cc4c816dafdc delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents: 2689
diff changeset
   595
	 safep_netpair = delete ([], safep_rls) safep_netpair,
cc4c816dafdc delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents: 2689
diff changeset
   596
	 safeIs	= safeIs,
cc4c816dafdc delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents: 2689
diff changeset
   597
	 safeEs	= rem_thm (safeEs,th),
cc4c816dafdc delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents: 2689
diff changeset
   598
	 hazIs	= hazIs,
cc4c816dafdc delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents: 2689
diff changeset
   599
	 hazEs	= hazEs,
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   600
	 xtraIs	= xtraIs,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   601
	 xtraEs	= xtraEs,
4651
70dd492a1698 changed wrapper mechanism of classical reasoner
oheimb
parents: 4646
diff changeset
   602
	 swrappers    = swrappers,
70dd492a1698 changed wrapper mechanism of classical reasoner
oheimb
parents: 4646
diff changeset
   603
	 uwrappers    = uwrappers,
2813
cc4c816dafdc delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents: 2689
diff changeset
   604
	 haz_netpair  = haz_netpair,
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   605
	 dup_netpair  = dup_netpair,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   606
	 xtra_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
   607
   end
cc4c816dafdc delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents: 2689
diff changeset
   608
 else cs;
1800
3d9d2ef0cd3b Now implements delrules
paulson
parents: 1724
diff changeset
   609
3d9d2ef0cd3b Now implements delrules
paulson
parents: 1724
diff changeset
   610
2813
cc4c816dafdc delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents: 2689
diff changeset
   611
fun delI th
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   612
         (cs as CS{safeIs, safeEs, hazIs, hazEs, xtraIs, xtraEs, swrappers, uwrappers, 
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   613
	           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
   614
 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
   615
     CS{haz_netpair = delete ([th], []) haz_netpair,
1800
3d9d2ef0cd3b Now implements delrules
paulson
parents: 1724
diff changeset
   616
	dup_netpair = delete ([dup_intr th], []) dup_netpair,
3d9d2ef0cd3b Now implements delrules
paulson
parents: 1724
diff changeset
   617
	safeIs 	= safeIs, 
3d9d2ef0cd3b Now implements delrules
paulson
parents: 1724
diff changeset
   618
	safeEs	= safeEs,
2813
cc4c816dafdc delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents: 2689
diff changeset
   619
	hazIs	= rem_thm (hazIs,th),
1800
3d9d2ef0cd3b Now implements delrules
paulson
parents: 1724
diff changeset
   620
	hazEs	= hazEs,
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   621
	xtraIs	= xtraIs,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   622
	xtraEs	= xtraEs,
4651
70dd492a1698 changed wrapper mechanism of classical reasoner
oheimb
parents: 4646
diff changeset
   623
	swrappers     = swrappers,
70dd492a1698 changed wrapper mechanism of classical reasoner
oheimb
parents: 4646
diff changeset
   624
	uwrappers     = uwrappers,
1800
3d9d2ef0cd3b Now implements delrules
paulson
parents: 1724
diff changeset
   625
	safe0_netpair = safe0_netpair,
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   626
	safep_netpair = safep_netpair,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   627
	xtra_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
   628
 else cs;
1800
3d9d2ef0cd3b Now implements delrules
paulson
parents: 1724
diff changeset
   629
2813
cc4c816dafdc delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents: 2689
diff changeset
   630
fun delE th
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   631
	 (cs as CS{safeIs, safeEs, hazIs, hazEs, xtraIs, xtraEs, swrappers, uwrappers, 
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   632
	           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
   633
 if mem_thm (th, hazEs) then
cc4c816dafdc delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents: 2689
diff changeset
   634
     CS{haz_netpair = delete ([], [th]) haz_netpair,
1800
3d9d2ef0cd3b Now implements delrules
paulson
parents: 1724
diff changeset
   635
	dup_netpair = delete ([], [dup_elim th]) dup_netpair,
3d9d2ef0cd3b Now implements delrules
paulson
parents: 1724
diff changeset
   636
	safeIs	= safeIs, 
3d9d2ef0cd3b Now implements delrules
paulson
parents: 1724
diff changeset
   637
	safeEs	= safeEs,
3d9d2ef0cd3b Now implements delrules
paulson
parents: 1724
diff changeset
   638
	hazIs	= hazIs,
2813
cc4c816dafdc delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents: 2689
diff changeset
   639
	hazEs	= rem_thm (hazEs,th),
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   640
	xtraIs	= xtraIs,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   641
	xtraEs	= xtraEs,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   642
	swrappers     = swrappers,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   643
	uwrappers     = uwrappers,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   644
	safe0_netpair = safe0_netpair,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   645
	safep_netpair = safep_netpair,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   646
	xtra_netpair = xtra_netpair}
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   647
 else cs;
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   648
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   649
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   650
fun delXI th
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   651
         (cs as CS{safeIs, safeEs, hazIs, hazEs, xtraIs, xtraEs, swrappers, uwrappers, 
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   652
	           safe0_netpair, safep_netpair, haz_netpair, dup_netpair, xtra_netpair}) =
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   653
 if mem_thm (th, xtraIs) then
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   654
     CS{xtra_netpair = delete ([th], []) xtra_netpair,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   655
	safeIs 	= safeIs, 
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   656
	safeEs	= safeEs,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   657
	hazIs	= hazIs,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   658
	hazEs	= hazEs,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   659
	xtraIs	= rem_thm (xtraIs,th),
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   660
	xtraEs	= xtraEs,
4651
70dd492a1698 changed wrapper mechanism of classical reasoner
oheimb
parents: 4646
diff changeset
   661
	swrappers     = swrappers,
70dd492a1698 changed wrapper mechanism of classical reasoner
oheimb
parents: 4646
diff changeset
   662
	uwrappers     = uwrappers,
1800
3d9d2ef0cd3b Now implements delrules
paulson
parents: 1724
diff changeset
   663
	safe0_netpair = safe0_netpair,
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   664
	safep_netpair = safep_netpair,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   665
	haz_netpair  = haz_netpair,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   666
	dup_netpair  = dup_netpair}
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   667
 else cs;
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   668
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   669
fun delXE th
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   670
	 (cs as CS{safeIs, safeEs, hazIs, hazEs, xtraIs, xtraEs, swrappers, uwrappers, 
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   671
	           safe0_netpair, safep_netpair, haz_netpair, dup_netpair, xtra_netpair}) =
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   672
 if mem_thm (th, xtraEs) then
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   673
     CS{xtra_netpair = delete ([], [th]) xtra_netpair,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   674
	safeIs	= safeIs, 
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   675
	safeEs	= safeEs,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   676
	hazIs	= hazIs,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   677
	hazEs	= hazEs,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   678
	xtraIs	= xtraIs,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   679
	xtraEs	= rem_thm (xtraEs,th),
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   680
	swrappers     = swrappers,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   681
	uwrappers     = uwrappers,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   682
	safe0_netpair = safe0_netpair,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   683
	safep_netpair = safep_netpair,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   684
	haz_netpair  = haz_netpair,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   685
	dup_netpair  = dup_netpair}
2813
cc4c816dafdc delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents: 2689
diff changeset
   686
 else cs;
1800
3d9d2ef0cd3b Now implements delrules
paulson
parents: 1724
diff changeset
   687
2813
cc4c816dafdc delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents: 2689
diff changeset
   688
(*Delete ALL occurrences of "th" in the claset (perhaps from several lists)*)
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   689
fun delrule (cs as CS{safeIs, safeEs, hazIs, hazEs, xtraIs, xtraEs, ...}, th) =
2813
cc4c816dafdc delrules now deletes ALL occurrences of a rule, since it may appear in any of
paulson
parents: 2689
diff changeset
   690
       if mem_thm (th, safeIs) orelse mem_thm (th, safeEs) orelse
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   691
	  mem_thm (th, hazIs)  orelse mem_thm (th, hazEs) orelse
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   692
          mem_thm (th, xtraIs)  orelse mem_thm (th, xtraEs) 
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   693
       then delSI th (delSE th (delI th (delE th (delXI th (delXE th cs)))))
4079
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
   694
       else (warning ("Rule not in claset\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
   695
	     cs);
1800
3d9d2ef0cd3b Now implements delrules
paulson
parents: 1724
diff changeset
   696
3d9d2ef0cd3b Now implements delrules
paulson
parents: 1724
diff changeset
   697
val op delrules = foldl delrule;
3d9d2ef0cd3b Now implements delrules
paulson
parents: 1724
diff changeset
   698
3d9d2ef0cd3b Now implements delrules
paulson
parents: 1724
diff changeset
   699
4767
b9f3468c6ee2 introduced functions for updating the wrapper lists
oheimb
parents: 4765
diff changeset
   700
(*** Modifying the wrapper tacticals ***)
b9f3468c6ee2 introduced functions for updating the wrapper lists
oheimb
parents: 4765
diff changeset
   701
fun update_swrappers 
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   702
(CS{safeIs, safeEs, hazIs, hazEs, xtraIs, xtraEs, swrappers, uwrappers, 
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   703
    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
   704
 CS{safeIs = safeIs, safeEs = safeEs, hazIs = hazIs, hazEs = hazEs,
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   705
    xtraIs = xtraIs, xtraEs = xtraEs,
4767
b9f3468c6ee2 introduced functions for updating the wrapper lists
oheimb
parents: 4765
diff changeset
   706
    swrappers = f swrappers, uwrappers = uwrappers,
b9f3468c6ee2 introduced functions for updating the wrapper lists
oheimb
parents: 4765
diff changeset
   707
    safe0_netpair = safe0_netpair, safep_netpair = safep_netpair,
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   708
    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
   709
b9f3468c6ee2 introduced functions for updating the wrapper lists
oheimb
parents: 4765
diff changeset
   710
fun update_uwrappers 
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   711
(CS{safeIs, safeEs, hazIs, hazEs, xtraIs, xtraEs, swrappers, uwrappers, 
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   712
    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
   713
 CS{safeIs = safeIs, safeEs = safeEs, hazIs = hazIs, hazEs = hazEs,
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   714
    xtraIs = xtraIs, xtraEs = xtraEs,
4767
b9f3468c6ee2 introduced functions for updating the wrapper lists
oheimb
parents: 4765
diff changeset
   715
    swrappers = swrappers, uwrappers = f uwrappers,
b9f3468c6ee2 introduced functions for updating the wrapper lists
oheimb
parents: 4765
diff changeset
   716
    safe0_netpair = safe0_netpair, safep_netpair = safep_netpair,
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   717
    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
   718
982
4fe0b642b7d5 Addition of wrappers for integration with the simplifier.
lcp
parents: 747
diff changeset
   719
4651
70dd492a1698 changed wrapper mechanism of classical reasoner
oheimb
parents: 4646
diff changeset
   720
(*Add/replace a safe wrapper*)
4767
b9f3468c6ee2 introduced functions for updating the wrapper lists
oheimb
parents: 4765
diff changeset
   721
fun cs addSWrapper new_swrapper = update_swrappers cs (fn swrappers =>
b9f3468c6ee2 introduced functions for updating the wrapper lists
oheimb
parents: 4765
diff changeset
   722
    (case assoc_string (swrappers,(fst new_swrapper)) of None =>()
4651
70dd492a1698 changed wrapper mechanism of classical reasoner
oheimb
parents: 4646
diff changeset
   723
	   | Some x => warning("overwriting safe wrapper "^fst new_swrapper); 
4767
b9f3468c6ee2 introduced functions for updating the wrapper lists
oheimb
parents: 4765
diff changeset
   724
		   overwrite (swrappers, new_swrapper)));
4651
70dd492a1698 changed wrapper mechanism of classical reasoner
oheimb
parents: 4646
diff changeset
   725
70dd492a1698 changed wrapper mechanism of classical reasoner
oheimb
parents: 4646
diff changeset
   726
(*Add/replace an unsafe wrapper*)
4767
b9f3468c6ee2 introduced functions for updating the wrapper lists
oheimb
parents: 4765
diff changeset
   727
fun cs addWrapper new_uwrapper = update_uwrappers cs (fn uwrappers =>
b9f3468c6ee2 introduced functions for updating the wrapper lists
oheimb
parents: 4765
diff changeset
   728
    (case assoc_string (uwrappers,(fst new_uwrapper)) of None =>()
4651
70dd492a1698 changed wrapper mechanism of classical reasoner
oheimb
parents: 4646
diff changeset
   729
	   | Some x => warning ("overwriting unsafe wrapper "^fst new_uwrapper);
4767
b9f3468c6ee2 introduced functions for updating the wrapper lists
oheimb
parents: 4765
diff changeset
   730
		   overwrite (uwrappers, new_uwrapper)));
982
4fe0b642b7d5 Addition of wrappers for integration with the simplifier.
lcp
parents: 747
diff changeset
   731
4651
70dd492a1698 changed wrapper mechanism of classical reasoner
oheimb
parents: 4646
diff changeset
   732
(*Remove a safe wrapper*)
4767
b9f3468c6ee2 introduced functions for updating the wrapper lists
oheimb
parents: 4765
diff changeset
   733
fun cs delSWrapper name = update_swrappers cs (fn swrappers =>
b9f3468c6ee2 introduced functions for updating the wrapper lists
oheimb
parents: 4765
diff changeset
   734
    let val (del,rest) = partition (fn (n,_) => n=name) swrappers
b9f3468c6ee2 introduced functions for updating the wrapper lists
oheimb
parents: 4765
diff changeset
   735
    in if null del then (warning ("No such safe wrapper in claset: "^ name); 
b9f3468c6ee2 introduced functions for updating the wrapper lists
oheimb
parents: 4765
diff changeset
   736
			 swrappers) else rest end);
982
4fe0b642b7d5 Addition of wrappers for integration with the simplifier.
lcp
parents: 747
diff changeset
   737
4651
70dd492a1698 changed wrapper mechanism of classical reasoner
oheimb
parents: 4646
diff changeset
   738
(*Remove an unsafe wrapper*)
4767
b9f3468c6ee2 introduced functions for updating the wrapper lists
oheimb
parents: 4765
diff changeset
   739
fun cs delWrapper name = update_uwrappers cs (fn uwrappers =>
b9f3468c6ee2 introduced functions for updating the wrapper lists
oheimb
parents: 4765
diff changeset
   740
    let val (del,rest) = partition (fn (n,_) => n=name) uwrappers
b9f3468c6ee2 introduced functions for updating the wrapper lists
oheimb
parents: 4765
diff changeset
   741
    in if null del then (warning ("No such unsafe wrapper in claset: " ^ name);
b9f3468c6ee2 introduced functions for updating the wrapper lists
oheimb
parents: 4765
diff changeset
   742
                         uwrappers) else rest end);
982
4fe0b642b7d5 Addition of wrappers for integration with the simplifier.
lcp
parents: 747
diff changeset
   743
2630
7a962f6829ca moved THEN_MAYBE to Pure/tctical.ML
oheimb
parents: 2173
diff changeset
   744
(*compose a safe tactic sequentially before/alternatively after safe_step_tac*)
4767
b9f3468c6ee2 introduced functions for updating the wrapper lists
oheimb
parents: 4765
diff changeset
   745
fun cs addSbefore  (name,    tac1) = 
5523
dc8cdc192cd0 added addD2, addE2, addSD2, and addSE2
oheimb
parents: 5028
diff changeset
   746
    cs addSWrapper (name, fn tac2 => tac1 ORELSE' tac2);
4767
b9f3468c6ee2 introduced functions for updating the wrapper lists
oheimb
parents: 4765
diff changeset
   747
fun cs addSaltern  (name,    tac2) = 
5523
dc8cdc192cd0 added addD2, addE2, addSD2, and addSE2
oheimb
parents: 5028
diff changeset
   748
    cs addSWrapper (name, fn tac1 => tac1 ORELSE' tac2);
982
4fe0b642b7d5 Addition of wrappers for integration with the simplifier.
lcp
parents: 747
diff changeset
   749
2630
7a962f6829ca moved THEN_MAYBE to Pure/tctical.ML
oheimb
parents: 2173
diff changeset
   750
(*compose a tactic sequentially before/alternatively after the step tactic*)
4767
b9f3468c6ee2 introduced functions for updating the wrapper lists
oheimb
parents: 4765
diff changeset
   751
fun cs addbefore   (name,    tac1) = 
5523
dc8cdc192cd0 added addD2, addE2, addSD2, and addSE2
oheimb
parents: 5028
diff changeset
   752
    cs addWrapper  (name, fn tac2 => tac1 APPEND' tac2);
4767
b9f3468c6ee2 introduced functions for updating the wrapper lists
oheimb
parents: 4765
diff changeset
   753
fun cs addaltern   (name,    tac2) =
5523
dc8cdc192cd0 added addD2, addE2, addSD2, and addSE2
oheimb
parents: 5028
diff changeset
   754
    cs addWrapper  (name, fn tac1 => tac1 APPEND' tac2);
4767
b9f3468c6ee2 introduced functions for updating the wrapper lists
oheimb
parents: 4765
diff changeset
   755
5523
dc8cdc192cd0 added addD2, addE2, addSD2, and addSE2
oheimb
parents: 5028
diff changeset
   756
fun cs addD2     (name, thm) = 
dc8cdc192cd0 added addD2, addE2, addSD2, and addSE2
oheimb
parents: 5028
diff changeset
   757
    cs addaltern (name, dtac thm THEN' atac);
dc8cdc192cd0 added addD2, addE2, addSD2, and addSE2
oheimb
parents: 5028
diff changeset
   758
fun cs addE2     (name, thm) = 
dc8cdc192cd0 added addD2, addE2, addSD2, and addSE2
oheimb
parents: 5028
diff changeset
   759
    cs addaltern (name, etac thm THEN' atac);
dc8cdc192cd0 added addD2, addE2, addSD2, and addSE2
oheimb
parents: 5028
diff changeset
   760
fun cs addSD2     (name, thm) = 
dc8cdc192cd0 added addD2, addE2, addSD2, and addSE2
oheimb
parents: 5028
diff changeset
   761
    cs addSaltern (name, dmatch_tac [thm] THEN' eq_assume_tac);
dc8cdc192cd0 added addD2, addE2, addSD2, and addSE2
oheimb
parents: 5028
diff changeset
   762
fun cs addSE2     (name, thm) = 
dc8cdc192cd0 added addD2, addE2, addSD2, and addSE2
oheimb
parents: 5028
diff changeset
   763
    cs addSaltern (name, ematch_tac [thm] THEN' eq_assume_tac);
982
4fe0b642b7d5 Addition of wrappers for integration with the simplifier.
lcp
parents: 747
diff changeset
   764
1711
c06d01f75764 Provides merge_cs to support default clasets
paulson
parents: 1587
diff changeset
   765
(*Merge works by adding all new rules of the 2nd claset into the 1st claset.
c06d01f75764 Provides merge_cs to support default clasets
paulson
parents: 1587
diff changeset
   766
  Merging the term nets may look more efficient, but the rather delicate
c06d01f75764 Provides merge_cs to support default clasets
paulson
parents: 1587
diff changeset
   767
  treatment of priority might get muddled up.*)
c06d01f75764 Provides merge_cs to support default clasets
paulson
parents: 1587
diff changeset
   768
fun merge_cs
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   769
    (cs as CS{safeIs, safeEs, hazIs, hazEs, xtraIs, xtraEs, ...},
4765
d2c41c8b545f merge_cs now also merges safe and unsafe wrappers
oheimb
parents: 4742
diff changeset
   770
     CS{safeIs=safeIs2, safeEs=safeEs2, hazIs=hazIs2, hazEs=hazEs2,
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   771
        xtraIs=xtraIs2, xtraEs=xtraEs2,	swrappers, uwrappers, ...}) =
1711
c06d01f75764 Provides merge_cs to support default clasets
paulson
parents: 1587
diff changeset
   772
  let val safeIs' = gen_rems eq_thm (safeIs2,safeIs)
c06d01f75764 Provides merge_cs to support default clasets
paulson
parents: 1587
diff changeset
   773
      val safeEs' = gen_rems eq_thm (safeEs2,safeEs)
2630
7a962f6829ca moved THEN_MAYBE to Pure/tctical.ML
oheimb
parents: 2173
diff changeset
   774
      val  hazIs' = gen_rems eq_thm ( hazIs2, hazIs)
7a962f6829ca moved THEN_MAYBE to Pure/tctical.ML
oheimb
parents: 2173
diff changeset
   775
      val  hazEs' = gen_rems eq_thm ( hazEs2, hazEs)
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   776
      val xtraIs' = gen_rems eq_thm (xtraIs2, xtraIs)
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   777
      val xtraEs' = gen_rems eq_thm (xtraEs2, xtraEs)
4767
b9f3468c6ee2 introduced functions for updating the wrapper lists
oheimb
parents: 4765
diff changeset
   778
      val cs1   = cs addSIs safeIs'
4765
d2c41c8b545f merge_cs now also merges safe and unsafe wrappers
oheimb
parents: 4742
diff changeset
   779
		     addSEs safeEs'
d2c41c8b545f merge_cs now also merges safe and unsafe wrappers
oheimb
parents: 4742
diff changeset
   780
		     addIs  hazIs'
d2c41c8b545f merge_cs now also merges safe and unsafe wrappers
oheimb
parents: 4742
diff changeset
   781
		     addEs  hazEs'
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   782
		     addXIs xtraIs'
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   783
		     addXEs xtraEs'
4767
b9f3468c6ee2 introduced functions for updating the wrapper lists
oheimb
parents: 4765
diff changeset
   784
      val cs2 = update_swrappers cs1 (fn ws => merge_alists ws swrappers);
b9f3468c6ee2 introduced functions for updating the wrapper lists
oheimb
parents: 4765
diff changeset
   785
      val cs3 = update_uwrappers cs2 (fn ws => merge_alists ws uwrappers);
b9f3468c6ee2 introduced functions for updating the wrapper lists
oheimb
parents: 4765
diff changeset
   786
  in cs3 
1711
c06d01f75764 Provides merge_cs to support default clasets
paulson
parents: 1587
diff changeset
   787
  end;
c06d01f75764 Provides merge_cs to support default clasets
paulson
parents: 1587
diff changeset
   788
982
4fe0b642b7d5 Addition of wrappers for integration with the simplifier.
lcp
parents: 747
diff changeset
   789
1800
3d9d2ef0cd3b Now implements delrules
paulson
parents: 1724
diff changeset
   790
(**** Simple tactics for theorem proving ****)
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   791
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   792
(*Attack subgoals using safe inferences -- matching, not resolution*)
2630
7a962f6829ca moved THEN_MAYBE to Pure/tctical.ML
oheimb
parents: 2173
diff changeset
   793
fun safe_step_tac (cs as CS{safe0_netpair,safep_netpair,...}) = 
4651
70dd492a1698 changed wrapper mechanism of classical reasoner
oheimb
parents: 4646
diff changeset
   794
  appSWrappers cs (FIRST' [
2630
7a962f6829ca moved THEN_MAYBE to Pure/tctical.ML
oheimb
parents: 2173
diff changeset
   795
	eq_assume_tac,
7a962f6829ca moved THEN_MAYBE to Pure/tctical.ML
oheimb
parents: 2173
diff changeset
   796
	eq_mp_tac,
7a962f6829ca moved THEN_MAYBE to Pure/tctical.ML
oheimb
parents: 2173
diff changeset
   797
	bimatch_from_nets_tac safe0_netpair,
7a962f6829ca moved THEN_MAYBE to Pure/tctical.ML
oheimb
parents: 2173
diff changeset
   798
	FIRST' hyp_subst_tacs,
7a962f6829ca moved THEN_MAYBE to Pure/tctical.ML
oheimb
parents: 2173
diff changeset
   799
	bimatch_from_nets_tac safep_netpair]);
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   800
5757
0ad476dabbc6 corrected (and simplified) depth_tac
oheimb
parents: 5523
diff changeset
   801
(*Repeatedly attack a subgoal using safe inferences -- it's deterministic!*)
0ad476dabbc6 corrected (and simplified) depth_tac
oheimb
parents: 5523
diff changeset
   802
fun safe_steps_tac cs = REPEAT_DETERM1 o 
0ad476dabbc6 corrected (and simplified) depth_tac
oheimb
parents: 5523
diff changeset
   803
	(fn i => COND (has_fewer_prems i) no_tac (safe_step_tac cs i));
0ad476dabbc6 corrected (and simplified) depth_tac
oheimb
parents: 5523
diff changeset
   804
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   805
(*Repeatedly attack subgoals using safe inferences -- it's deterministic!*)
5757
0ad476dabbc6 corrected (and simplified) depth_tac
oheimb
parents: 5523
diff changeset
   806
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
   807
3705
76f3b2803982 Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents: 3546
diff changeset
   808
76f3b2803982 Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents: 3546
diff changeset
   809
(*** 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
   810
76f3b2803982 Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents: 3546
diff changeset
   811
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
   812
76f3b2803982 Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents: 3546
diff changeset
   813
(*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
   814
  create precisely n subgoals.*)
76f3b2803982 Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents: 3546
diff changeset
   815
fun n_bimatch_from_nets_tac n = 
76f3b2803982 Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents: 3546
diff changeset
   816
    biresolution_from_nets_tac (orderlist o filter (nsubgoalsP n)) true;
76f3b2803982 Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents: 3546
diff changeset
   817
76f3b2803982 Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents: 3546
diff changeset
   818
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
   819
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
   820
76f3b2803982 Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents: 3546
diff changeset
   821
(*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
   822
fun bimatch2_tac netpair i =
76f3b2803982 Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents: 3546
diff changeset
   823
    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
   824
    (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
   825
76f3b2803982 Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents: 3546
diff changeset
   826
(*Attack subgoals using safe inferences -- matching, not resolution*)
76f3b2803982 Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents: 3546
diff changeset
   827
fun clarify_step_tac (cs as CS{safe0_netpair,safep_netpair,...}) = 
4651
70dd492a1698 changed wrapper mechanism of classical reasoner
oheimb
parents: 4646
diff changeset
   828
  appSWrappers cs (FIRST' [
3705
76f3b2803982 Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents: 3546
diff changeset
   829
	eq_assume_contr_tac,
76f3b2803982 Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents: 3546
diff changeset
   830
	bimatch_from_nets_tac safe0_netpair,
76f3b2803982 Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents: 3546
diff changeset
   831
	FIRST' hyp_subst_tacs,
76f3b2803982 Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents: 3546
diff changeset
   832
	n_bimatch_from_nets_tac 1 safep_netpair,
76f3b2803982 Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents: 3546
diff changeset
   833
        bimatch2_tac safep_netpair]);
76f3b2803982 Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents: 3546
diff changeset
   834
76f3b2803982 Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents: 3546
diff changeset
   835
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
   836
76f3b2803982 Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents: 3546
diff changeset
   837
76f3b2803982 Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents: 3546
diff changeset
   838
(*** 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
   839
4066
7b508ac609f7 Fixed comments
paulson
parents: 3727
diff changeset
   840
(*Backtracking is allowed among the various these unsafe ways of
7b508ac609f7 Fixed comments
paulson
parents: 3727
diff changeset
   841
  proving a subgoal.  *)
747
bdc066781063 deepen_tac: modified due to outcome of experiments. Its
lcp
parents: 681
diff changeset
   842
fun inst0_step_tac (CS{safe0_netpair,safep_netpair,...}) =
bdc066781063 deepen_tac: modified due to outcome of experiments. Its
lcp
parents: 681
diff changeset
   843
  assume_tac 			  APPEND' 
bdc066781063 deepen_tac: modified due to outcome of experiments. Its
lcp
parents: 681
diff changeset
   844
  contr_tac 			  APPEND' 
bdc066781063 deepen_tac: modified due to outcome of experiments. Its
lcp
parents: 681
diff changeset
   845
  biresolve_from_nets_tac safe0_netpair;
bdc066781063 deepen_tac: modified due to outcome of experiments. Its
lcp
parents: 681
diff changeset
   846
4066
7b508ac609f7 Fixed comments
paulson
parents: 3727
diff changeset
   847
(*These unsafe steps could generate more subgoals.*)
747
bdc066781063 deepen_tac: modified due to outcome of experiments. Its
lcp
parents: 681
diff changeset
   848
fun instp_step_tac (CS{safep_netpair,...}) =
bdc066781063 deepen_tac: modified due to outcome of experiments. Its
lcp
parents: 681
diff changeset
   849
  biresolve_from_nets_tac safep_netpair;
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   850
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   851
(*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
   852
fun inst_step_tac cs = inst0_step_tac cs APPEND' instp_step_tac cs;
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   853
982
4fe0b642b7d5 Addition of wrappers for integration with the simplifier.
lcp
parents: 747
diff changeset
   854
fun haz_step_tac (CS{haz_netpair,...}) = 
681
9b02474744ca Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents: 469
diff changeset
   855
  biresolve_from_nets_tac haz_netpair;
9b02474744ca Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents: 469
diff changeset
   856
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   857
(*Single step for the prover.  FAILS unless it makes progress. *)
5523
dc8cdc192cd0 added addD2, addE2, addSD2, and addSE2
oheimb
parents: 5028
diff changeset
   858
fun step_tac cs i = safe_tac cs ORELSE appWrappers cs 
dc8cdc192cd0 added addD2, addE2, addSD2, and addSE2
oheimb
parents: 5028
diff changeset
   859
	(inst_step_tac cs ORELSE' haz_step_tac cs) i;
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   860
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   861
(*Using a "safe" rule to instantiate variables is unsafe.  This tactic
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   862
  allows backtracking from "safe" rules to "unsafe" rules here.*)
5523
dc8cdc192cd0 added addD2, addE2, addSD2, and addSE2
oheimb
parents: 5028
diff changeset
   863
fun slow_step_tac cs i = safe_tac cs ORELSE appWrappers cs 
dc8cdc192cd0 added addD2, addE2, addSD2, and addSE2
oheimb
parents: 5028
diff changeset
   864
	(inst_step_tac cs APPEND' haz_step_tac cs) i;
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   865
1800
3d9d2ef0cd3b Now implements delrules
paulson
parents: 1724
diff changeset
   866
(**** The following tactics all fail unless they solve one goal ****)
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   867
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   868
(*Dumb but fast*)
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   869
fun fast_tac cs = SELECT_GOAL (DEPTH_SOLVE (step_tac cs 1));
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   870
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   871
(*Slower but smarter than fast_tac*)
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   872
fun best_tac cs = 
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   873
  SELECT_GOAL (BEST_FIRST (has_fewer_prems 1, sizef) (step_tac cs 1));
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   874
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   875
fun slow_tac cs = SELECT_GOAL (DEPTH_SOLVE (slow_step_tac cs 1));
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   876
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   877
fun slow_best_tac cs = 
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   878
  SELECT_GOAL (BEST_FIRST (has_fewer_prems 1, sizef) (slow_step_tac cs 1));
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   879
681
9b02474744ca Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents: 469
diff changeset
   880
1800
3d9d2ef0cd3b Now implements delrules
paulson
parents: 1724
diff changeset
   881
(***ASTAR with weight weight_ASTAR, by Norbert Voelker*) 
1587
e7d8a4957bac Now provides astar versions (thanks to Norbert Voelker)
paulson
parents: 1524
diff changeset
   882
val weight_ASTAR = ref 5; 
e7d8a4957bac Now provides astar versions (thanks to Norbert Voelker)
paulson
parents: 1524
diff changeset
   883
e7d8a4957bac Now provides astar versions (thanks to Norbert Voelker)
paulson
parents: 1524
diff changeset
   884
fun astar_tac cs = 
e7d8a4957bac Now provides astar versions (thanks to Norbert Voelker)
paulson
parents: 1524
diff changeset
   885
  SELECT_GOAL ( ASTAR (has_fewer_prems 1
e7d8a4957bac Now provides astar versions (thanks to Norbert Voelker)
paulson
parents: 1524
diff changeset
   886
	      , fn level =>(fn thm =>size_of_thm thm + !weight_ASTAR *level)) 
e7d8a4957bac Now provides astar versions (thanks to Norbert Voelker)
paulson
parents: 1524
diff changeset
   887
	      (step_tac cs 1));
e7d8a4957bac Now provides astar versions (thanks to Norbert Voelker)
paulson
parents: 1524
diff changeset
   888
e7d8a4957bac Now provides astar versions (thanks to Norbert Voelker)
paulson
parents: 1524
diff changeset
   889
fun slow_astar_tac cs = 
e7d8a4957bac Now provides astar versions (thanks to Norbert Voelker)
paulson
parents: 1524
diff changeset
   890
  SELECT_GOAL ( ASTAR (has_fewer_prems 1
e7d8a4957bac Now provides astar versions (thanks to Norbert Voelker)
paulson
parents: 1524
diff changeset
   891
	      , fn level =>(fn thm =>size_of_thm thm + !weight_ASTAR *level)) 
e7d8a4957bac Now provides astar versions (thanks to Norbert Voelker)
paulson
parents: 1524
diff changeset
   892
	      (slow_step_tac cs 1));
e7d8a4957bac Now provides astar versions (thanks to Norbert Voelker)
paulson
parents: 1524
diff changeset
   893
1800
3d9d2ef0cd3b Now implements delrules
paulson
parents: 1724
diff changeset
   894
(**** 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
   895
  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
   896
  easy theorems faster, but loses completeness -- and many of the harder
1800
3d9d2ef0cd3b Now implements delrules
paulson
parents: 1724
diff changeset
   897
  theorems such as 43. ****)
681
9b02474744ca Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents: 469
diff changeset
   898
747
bdc066781063 deepen_tac: modified due to outcome of experiments. Its
lcp
parents: 681
diff changeset
   899
(*Non-deterministic!  Could always expand the first unsafe connective.
bdc066781063 deepen_tac: modified due to outcome of experiments. Its
lcp
parents: 681
diff changeset
   900
  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
   901
  greater search depth required.*)
681
9b02474744ca Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents: 469
diff changeset
   902
fun dup_step_tac (cs as (CS{dup_netpair,...})) = 
9b02474744ca Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents: 469
diff changeset
   903
  biresolve_from_nets_tac dup_netpair;
9b02474744ca Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents: 469
diff changeset
   904
5523
dc8cdc192cd0 added addD2, addE2, addSD2, and addSE2
oheimb
parents: 5028
diff changeset
   905
(*Searching to depth m. A variant called nodup_depth_tac appears in clasimp.ML*)
5757
0ad476dabbc6 corrected (and simplified) depth_tac
oheimb
parents: 5523
diff changeset
   906
local
0ad476dabbc6 corrected (and simplified) depth_tac
oheimb
parents: 5523
diff changeset
   907
fun slow_step_tac' cs = appWrappers cs 
0ad476dabbc6 corrected (and simplified) depth_tac
oheimb
parents: 5523
diff changeset
   908
	(instp_step_tac cs APPEND' dup_step_tac cs);
0ad476dabbc6 corrected (and simplified) depth_tac
oheimb
parents: 5523
diff changeset
   909
in fun depth_tac cs m i state = SELECT_GOAL 
0ad476dabbc6 corrected (and simplified) depth_tac
oheimb
parents: 5523
diff changeset
   910
   (safe_steps_tac cs 1 THEN_ELSE 
0ad476dabbc6 corrected (and simplified) depth_tac
oheimb
parents: 5523
diff changeset
   911
	(DEPTH_SOLVE (depth_tac cs m 1),
0ad476dabbc6 corrected (and simplified) depth_tac
oheimb
parents: 5523
diff changeset
   912
	 inst0_step_tac cs 1 APPEND COND (K (m=0)) no_tac
0ad476dabbc6 corrected (and simplified) depth_tac
oheimb
parents: 5523
diff changeset
   913
		(slow_step_tac' cs 1 THEN DEPTH_SOLVE (depth_tac cs (m-1) 1))
0ad476dabbc6 corrected (and simplified) depth_tac
oheimb
parents: 5523
diff changeset
   914
        )) i state;
0ad476dabbc6 corrected (and simplified) depth_tac
oheimb
parents: 5523
diff changeset
   915
end;
747
bdc066781063 deepen_tac: modified due to outcome of experiments. Its
lcp
parents: 681
diff changeset
   916
2173
08c68550460b Added a comment
paulson
parents: 2066
diff changeset
   917
(*Search, with depth bound m.  
08c68550460b Added a comment
paulson
parents: 2066
diff changeset
   918
  This is the "entry point", which does safe inferences first.*)
747
bdc066781063 deepen_tac: modified due to outcome of experiments. Its
lcp
parents: 681
diff changeset
   919
fun safe_depth_tac cs m = 
681
9b02474744ca Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents: 469
diff changeset
   920
  SUBGOAL 
9b02474744ca Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents: 469
diff changeset
   921
    (fn (prem,i) =>
9b02474744ca Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents: 469
diff changeset
   922
      let val deti =
9b02474744ca Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents: 469
diff changeset
   923
	  (*No Vars in the goal?  No need to backtrack between goals.*)
9b02474744ca Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents: 469
diff changeset
   924
	  case term_vars prem of
9b02474744ca Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents: 469
diff changeset
   925
	      []	=> DETERM 
9b02474744ca Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents: 469
diff changeset
   926
	    | _::_	=> I
9b02474744ca Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents: 469
diff changeset
   927
      in  SELECT_GOAL (TRY (safe_tac cs) THEN 
747
bdc066781063 deepen_tac: modified due to outcome of experiments. Its
lcp
parents: 681
diff changeset
   928
		       DEPTH_SOLVE (deti (depth_tac cs m 1))) i
bdc066781063 deepen_tac: modified due to outcome of experiments. Its
lcp
parents: 681
diff changeset
   929
      end);
681
9b02474744ca Provers/classical: now takes theorem "classical" as argument, proves "swap"
lcp
parents: 469
diff changeset
   930
2868
17a23a62f82a New DEEPEN allows giving an upper bound for deepen_tac
paulson
parents: 2813
diff changeset
   931
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
   932
4079
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
   933
1724
bb02e6976258 Added functions for default claset.
berghofe
parents: 1711
diff changeset
   934
4079
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
   935
(** claset theory data **)
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
   936
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
   937
(* init data kind claset *)
1724
bb02e6976258 Added functions for default claset.
berghofe
parents: 1711
diff changeset
   938
4079
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
   939
exception CSData of claset ref;
1724
bb02e6976258 Added functions for default claset.
berghofe
parents: 1711
diff changeset
   940
4079
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
   941
local
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
   942
  val empty = CSData (ref empty_cs);
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
   943
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
   944
  (*create new references*)
6556
daa00919502b theory data: copy;
wenzelm
parents: 6502
diff changeset
   945
  fun copy (ClasetData (ref (CSData (ref cs)))) =
4079
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
   946
    ClasetData (ref (CSData (ref cs)));
6556
daa00919502b theory data: copy;
wenzelm
parents: 6502
diff changeset
   947
  val prep_ext = copy;
1724
bb02e6976258 Added functions for default claset.
berghofe
parents: 1711
diff changeset
   948
4079
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
   949
  fun merge (ClasetData (ref (CSData (ref cs1))), ClasetData (ref (CSData (ref cs2)))) =
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
   950
    ClasetData (ref (CSData (ref (merge_cs (cs1, cs2)))));
1724
bb02e6976258 Added functions for default claset.
berghofe
parents: 1711
diff changeset
   951
4259
adbe3f4e7caf adapted print methods;
wenzelm
parents: 4124
diff changeset
   952
  fun print (_: Sign.sg) (ClasetData (ref (CSData (ref cs)))) = print_cs cs;
4079
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
   953
in
6556
daa00919502b theory data: copy;
wenzelm
parents: 6502
diff changeset
   954
  val _ = fix_methods (empty, copy, prep_ext, merge, print);
4079
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
   955
end;
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
   956
1724
bb02e6976258 Added functions for default claset.
berghofe
parents: 1711
diff changeset
   957
4079
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
   958
(* access claset *)
1724
bb02e6976258 Added functions for default claset.
berghofe
parents: 1711
diff changeset
   959
5001
9de7fda0a6df accomodate tuned version of theory data;
wenzelm
parents: 4854
diff changeset
   960
val print_claset = Theory.print_data clasetK;
4380
0a32020760fa added print_claset;
wenzelm
parents: 4271
diff changeset
   961
5001
9de7fda0a6df accomodate tuned version of theory data;
wenzelm
parents: 4854
diff changeset
   962
val claset_ref_of_sg = Sign.get_data clasetK (fn ClasetData (ref (CSData r)) => r);
1807
3ff66483a8d4 Now exports Delrules
paulson
parents: 1800
diff changeset
   963
6391
0da748358eff Theory.sign_of;
wenzelm
parents: 6096
diff changeset
   964
val claset_ref_of = claset_ref_of_sg o Theory.sign_of;
4079
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
   965
val claset_of_sg = ! o claset_ref_of_sg;
6391
0da748358eff Theory.sign_of;
wenzelm
parents: 6096
diff changeset
   966
val claset_of = claset_of_sg o Theory.sign_of;
1800
3d9d2ef0cd3b Now implements delrules
paulson
parents: 1724
diff changeset
   967
6391
0da748358eff Theory.sign_of;
wenzelm
parents: 6096
diff changeset
   968
fun CLASET tacf state = tacf (claset_of_sg (Thm.sign_of_thm state)) state;
0da748358eff Theory.sign_of;
wenzelm
parents: 6096
diff changeset
   969
fun CLASET' tacf i state = tacf (claset_of_sg (Thm.sign_of_thm state)) i state;
3705
76f3b2803982 Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents: 3546
diff changeset
   970
5028
61c10aad3d71 Context.the_context;
wenzelm
parents: 5001
diff changeset
   971
val claset = claset_of o Context.the_context;
6391
0da748358eff Theory.sign_of;
wenzelm
parents: 6096
diff changeset
   972
val claset_ref = claset_ref_of_sg o Theory.sign_of o Context.the_context;
4079
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
   973
3705
76f3b2803982 Addition of clarify_tac, clarify_step_tac, Clarify_tac, Clarify_step_tac
paulson
parents: 3546
diff changeset
   974
4079
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
   975
(* change claset *)
1800
3d9d2ef0cd3b Now implements delrules
paulson
parents: 1724
diff changeset
   976
4079
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
   977
fun change_claset f x = claset_ref () := (f (claset (), x));
1724
bb02e6976258 Added functions for default claset.
berghofe
parents: 1711
diff changeset
   978
4079
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
   979
val AddDs = change_claset (op addDs);
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
   980
val AddEs = change_claset (op addEs);
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
   981
val AddIs = change_claset (op addIs);
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
   982
val AddSDs = change_claset (op addSDs);
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
   983
val AddSEs = change_claset (op addSEs);
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
   984
val AddSIs = change_claset (op addSIs);
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   985
val AddXDs = change_claset (op addXDs);
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   986
val AddXEs = change_claset (op addXEs);
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
   987
val AddXIs = change_claset (op addXIs);
4079
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
   988
val Delrules = change_claset (op delrules);
3727
ed63c05d7992 Added Safe_tac; all other default claset tactics now dereference "claset"
paulson
parents: 3705
diff changeset
   989
4079
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
   990
5841
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
   991
(* proof data kind 'Provers/claset' *)
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
   992
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
   993
structure LocalClasetArgs =
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
   994
struct
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
   995
  val name = "Provers/claset";
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
   996
  type T = claset;
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
   997
  val init = claset_of;
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
   998
  fun print _ cs = print_cs cs;
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
   999
end;
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1000
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1001
structure LocalClaset = ProofDataFun(LocalClasetArgs);
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1002
val print_local_claset = LocalClaset.print;
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1003
val get_local_claset = LocalClaset.get;
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1004
val put_local_claset = LocalClaset.put;
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1005
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1006
5885
6c920d876098 tuned attribute names;
wenzelm
parents: 5841
diff changeset
  1007
(* attributes *)
6c920d876098 tuned attribute names;
wenzelm
parents: 5841
diff changeset
  1008
6c920d876098 tuned attribute names;
wenzelm
parents: 5841
diff changeset
  1009
fun change_global_cs f (thy, th) =
6c920d876098 tuned attribute names;
wenzelm
parents: 5841
diff changeset
  1010
  let val r = claset_ref_of thy
6096
3451f9e88528 eliminated tthm type and Attribute structure;
wenzelm
parents: 5927
diff changeset
  1011
  in r := f (! r, [th]); (thy, th) end;
5885
6c920d876098 tuned attribute names;
wenzelm
parents: 5841
diff changeset
  1012
6c920d876098 tuned attribute names;
wenzelm
parents: 5841
diff changeset
  1013
fun change_local_cs f (ctxt, th) =
6096
3451f9e88528 eliminated tthm type and Attribute structure;
wenzelm
parents: 5927
diff changeset
  1014
  let val cs = f (get_local_claset ctxt, [th])
5885
6c920d876098 tuned attribute names;
wenzelm
parents: 5841
diff changeset
  1015
  in (put_local_claset cs ctxt, th) end;
6c920d876098 tuned attribute names;
wenzelm
parents: 5841
diff changeset
  1016
6c920d876098 tuned attribute names;
wenzelm
parents: 5841
diff changeset
  1017
val safe_dest_global = change_global_cs (op addSDs);
6c920d876098 tuned attribute names;
wenzelm
parents: 5841
diff changeset
  1018
val safe_elim_global = change_global_cs (op addSEs);
6c920d876098 tuned attribute names;
wenzelm
parents: 5841
diff changeset
  1019
val safe_intro_global = change_global_cs (op addSIs);
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
  1020
val haz_dest_global = change_global_cs (op addDs);
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
  1021
val haz_elim_global = change_global_cs (op addEs);
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
  1022
val haz_intro_global = change_global_cs (op addIs);
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
  1023
val xtra_dest_global = change_global_cs (op addXDs);
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
  1024
val xtra_elim_global = change_global_cs (op addXEs);
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
  1025
val xtra_intro_global = change_global_cs (op addXIs);
5885
6c920d876098 tuned attribute names;
wenzelm
parents: 5841
diff changeset
  1026
val delrule_global = change_global_cs (op delrules);
6c920d876098 tuned attribute names;
wenzelm
parents: 5841
diff changeset
  1027
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
  1028
val safe_dest_local = change_local_cs (op addSDs);
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
  1029
val safe_elim_local = change_local_cs (op addSEs);
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
  1030
val safe_intro_local = change_local_cs (op addSIs);
5885
6c920d876098 tuned attribute names;
wenzelm
parents: 5841
diff changeset
  1031
val haz_dest_local = change_local_cs (op addDs);
6c920d876098 tuned attribute names;
wenzelm
parents: 5841
diff changeset
  1032
val haz_elim_local = change_local_cs (op addEs);
6c920d876098 tuned attribute names;
wenzelm
parents: 5841
diff changeset
  1033
val haz_intro_local = change_local_cs (op addIs);
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
  1034
val xtra_dest_local = change_local_cs (op addXDs);
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
  1035
val xtra_elim_local = change_local_cs (op addXEs);
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
  1036
val xtra_intro_local = change_local_cs (op addXIs);
5885
6c920d876098 tuned attribute names;
wenzelm
parents: 5841
diff changeset
  1037
val delrule_local = change_local_cs (op delrules);
6c920d876098 tuned attribute names;
wenzelm
parents: 5841
diff changeset
  1038
6c920d876098 tuned attribute names;
wenzelm
parents: 5841
diff changeset
  1039
4079
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
  1040
(* tactics referring to the implicit claset *)
1800
3d9d2ef0cd3b Now implements delrules
paulson
parents: 1724
diff changeset
  1041
4079
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
  1042
(*the abstraction over the proof state delays the dereferencing*)
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
  1043
fun Safe_tac st		  = safe_tac (claset()) st;
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
  1044
fun Safe_step_tac i st	  = safe_step_tac (claset()) i st;
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
  1045
fun Clarify_step_tac i st = clarify_step_tac (claset()) i st;
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
  1046
fun Clarify_tac i st	  = clarify_tac (claset()) i st;
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
  1047
fun Step_tac i st	  = step_tac (claset()) i st;
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
  1048
fun Fast_tac i st	  = fast_tac (claset()) i st;
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
  1049
fun Best_tac i st	  = best_tac (claset()) i st;
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
  1050
fun Slow_tac i st	  = slow_tac (claset()) i st;
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
  1051
fun Slow_best_tac i st	  = slow_best_tac (claset()) i st;
9df5e4f22d96 new implicit claset mechanism based on Sign.sg anytype data;
wenzelm
parents: 4066
diff changeset
  1052
fun Deepen_tac m	  = deepen_tac (claset()) m;
2066
b9063086ef56 Introduction of Slow_tac and Slow_best_tac
paulson
parents: 1938
diff changeset
  1053
1800
3d9d2ef0cd3b Now implements delrules
paulson
parents: 1724
diff changeset
  1054
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
  1055
end; 
5841
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1056
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1057
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1058
5885
6c920d876098 tuned attribute names;
wenzelm
parents: 5841
diff changeset
  1059
(** concrete syntax of attributes **)
5841
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1060
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1061
(* add / del rules *)
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1062
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1063
val introN = "intro";
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1064
val elimN = "elim";
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1065
val destN = "dest";
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1066
val delN = "del";
5885
6c920d876098 tuned attribute names;
wenzelm
parents: 5841
diff changeset
  1067
val delruleN = "delrule";
5841
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1068
5885
6c920d876098 tuned attribute names;
wenzelm
parents: 5841
diff changeset
  1069
val bang = Args.$$$ "!";
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
  1070
val bbang = Args.$$$ "!!";
5841
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1071
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
  1072
fun cla_att change xtra haz safe = Attrib.syntax
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
  1073
  (Scan.lift ((bbang >> K xtra || bang >> K haz || Scan.succeed safe) >> change));
5841
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1074
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
  1075
fun cla_attr f g h = (cla_att change_global_cs f g h, cla_att change_local_cs f g h);
5885
6c920d876098 tuned attribute names;
wenzelm
parents: 5841
diff changeset
  1076
val del_attr = (Attrib.no_args delrule_global, Attrib.no_args delrule_local);
5841
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1077
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1078
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1079
(* setup_attrs *)
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1080
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1081
val setup_attrs = Attrib.add_attributes
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
  1082
 [(destN, cla_attr (op addXDs) (op addDs) (op addSDs), "destruction rule"),
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
  1083
  (elimN, cla_attr (op addXEs) (op addEs) (op addSEs), "elimination rule"),
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
  1084
  (introN, cla_attr (op addXIs) (op addIs) (op addSIs), "introduction rule"),
5885
6c920d876098 tuned attribute names;
wenzelm
parents: 5841
diff changeset
  1085
  (delruleN, del_attr, "delete rule")];
5841
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1086
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1087
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1088
5885
6c920d876098 tuned attribute names;
wenzelm
parents: 5841
diff changeset
  1089
(** single rule proof method **)
5841
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1090
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1091
(* utils *)
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1092
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1093
fun resolve_from_seq_tac rq i st = Seq.flat (Seq.map (fn r => rtac r i st) rq);
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1094
fun order_rules xs = map snd (Tactic.orderlist xs);
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1095
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1096
fun find_rules concl nets =
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1097
  let fun rules_of (inet, _) = order_rules (Net.unify_term inet concl)
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1098
  in flat (map rules_of nets) end;
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1099
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1100
fun find_erules [] _ = []
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
  1101
  | find_erules (fact :: _) nets =
5841
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1102
      let
6502
bc30e13b36a8 improved 'single' method;
wenzelm
parents: 6492
diff changeset
  1103
        fun may_unify net = Net.unify_term net o Logic.strip_assums_concl o #prop o Thm.rep_thm;
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
  1104
        fun erules_of (_, enet) = order_rules (may_unify enet fact);
6502
bc30e13b36a8 improved 'single' method;
wenzelm
parents: 6492
diff changeset
  1105
      in flat (map erules_of nets) end;
5841
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1106
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1107
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1108
(* trace rules *)
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1109
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1110
val trace_rules = ref false;
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1111
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1112
fun print_rules rules i =
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1113
  if not (! trace_rules) then ()
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1114
  else
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1115
    Pretty.writeln (Pretty.big_list ("trying standard rule(s) on goal #" ^ string_of_int i ^ ":")
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1116
      (map Display.pretty_thm rules));
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1117
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1118
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1119
(* single_tac *)
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1120
6502
bc30e13b36a8 improved 'single' method;
wenzelm
parents: 6492
diff changeset
  1121
val imp_elim_netpair = insert (0, 0) ([], [imp_elim]) empty_netpair;
bc30e13b36a8 improved 'single' method;
wenzelm
parents: 6492
diff changeset
  1122
val not_elim_netpair = insert (0, 0) ([], [Data.not_elim]) empty_netpair;
bc30e13b36a8 improved 'single' method;
wenzelm
parents: 6492
diff changeset
  1123
6096
3451f9e88528 eliminated tthm type and Attribute structure;
wenzelm
parents: 5927
diff changeset
  1124
fun single_tac cs facts =
5841
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1125
  let
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
  1126
    val CS {safe0_netpair, safep_netpair, haz_netpair, dup_netpair, xtra_netpair, ...} = cs;
6502
bc30e13b36a8 improved 'single' method;
wenzelm
parents: 6492
diff changeset
  1127
    val nets = [imp_elim_netpair, safe0_netpair, safep_netpair,
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
  1128
      not_elim_netpair, haz_netpair, dup_netpair, xtra_netpair];
6492
wenzelm
parents: 6489
diff changeset
  1129
    val erules = find_erules facts nets;
5841
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1130
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1131
    val tac = SUBGOAL (fn (goal, i) =>
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1132
      let
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1133
        val irules = find_rules (Logic.strip_assums_concl goal) nets;
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1134
        val rules = erules @ irules;
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1135
        val ruleq = Method.forward_chain facts rules;
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1136
      in
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1137
        print_rules rules i;
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1138
        fn st => Seq.flat (Seq.map (fn rule => Tactic.rtac rule i st) ruleq) end);
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1139
  in tac end;
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1140
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1141
val single = Method.METHOD (FIRSTGOAL o (fn facts => CLASET' (fn cs => single_tac cs facts)));
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1142
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1143
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1144
6502
bc30e13b36a8 improved 'single' method;
wenzelm
parents: 6492
diff changeset
  1145
(** more proof methods **)
bc30e13b36a8 improved 'single' method;
wenzelm
parents: 6492
diff changeset
  1146
bc30e13b36a8 improved 'single' method;
wenzelm
parents: 6492
diff changeset
  1147
(* contradiction *)
bc30e13b36a8 improved 'single' method;
wenzelm
parents: 6492
diff changeset
  1148
bc30e13b36a8 improved 'single' method;
wenzelm
parents: 6492
diff changeset
  1149
(* FIXME
bc30e13b36a8 improved 'single' method;
wenzelm
parents: 6492
diff changeset
  1150
val contradiction = Method.METHOD (fn facts =>
bc30e13b36a8 improved 'single' method;
wenzelm
parents: 6492
diff changeset
  1151
  Method.FINISHED (ALLGOALS (Method.same_tac facts THEN' (contr_tac ORELSE' assume_tac))));
bc30e13b36a8 improved 'single' method;
wenzelm
parents: 6492
diff changeset
  1152
*)
bc30e13b36a8 improved 'single' method;
wenzelm
parents: 6492
diff changeset
  1153
bc30e13b36a8 improved 'single' method;
wenzelm
parents: 6492
diff changeset
  1154
val contradiction = Method.METHOD (fn facts => FIRSTGOAL (Method.same_tac facts THEN' contr_tac));
bc30e13b36a8 improved 'single' method;
wenzelm
parents: 6492
diff changeset
  1155
bc30e13b36a8 improved 'single' method;
wenzelm
parents: 6492
diff changeset
  1156
bc30e13b36a8 improved 'single' method;
wenzelm
parents: 6492
diff changeset
  1157
(* automatic methods *)
5841
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1158
5927
991483daa1a4 expoer cla_method('), cla_modifiers;
wenzelm
parents: 5885
diff changeset
  1159
val cla_modifiers =
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
  1160
 [Args.$$$ destN -- bbang >> K xtra_dest_local,
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
  1161
  Args.$$$ destN -- bang >> K haz_dest_local,
5927
991483daa1a4 expoer cla_method('), cla_modifiers;
wenzelm
parents: 5885
diff changeset
  1162
  Args.$$$ destN >> K safe_dest_local,
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
  1163
  Args.$$$ elimN -- bbang >> K xtra_elim_local,
5927
991483daa1a4 expoer cla_method('), cla_modifiers;
wenzelm
parents: 5885
diff changeset
  1164
  Args.$$$ elimN -- bang >> K haz_elim_local,
991483daa1a4 expoer cla_method('), cla_modifiers;
wenzelm
parents: 5885
diff changeset
  1165
  Args.$$$ elimN >> K safe_elim_local,
6955
9e2d97ef55d2 type claset: added extra I/E rules;
wenzelm
parents: 6556
diff changeset
  1166
  Args.$$$ introN -- bbang >> K xtra_intro_local,
5927
991483daa1a4 expoer cla_method('), cla_modifiers;
wenzelm
parents: 5885
diff changeset
  1167
  Args.$$$ introN -- bang >> K haz_intro_local,
991483daa1a4 expoer cla_method('), cla_modifiers;
wenzelm
parents: 5885
diff changeset
  1168
  Args.$$$ introN >> K safe_intro_local,
991483daa1a4 expoer cla_method('), cla_modifiers;
wenzelm
parents: 5885
diff changeset
  1169
  Args.$$$ delN >> K delrule_local];
991483daa1a4 expoer cla_method('), cla_modifiers;
wenzelm
parents: 5885
diff changeset
  1170
991483daa1a4 expoer cla_method('), cla_modifiers;
wenzelm
parents: 5885
diff changeset
  1171
val cla_args = Method.only_sectioned_args cla_modifiers;
5841
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1172
5885
6c920d876098 tuned attribute names;
wenzelm
parents: 5841
diff changeset
  1173
fun cla_meth tac ctxt = Method.METHOD0 (tac (get_local_claset ctxt));
6c920d876098 tuned attribute names;
wenzelm
parents: 5841
diff changeset
  1174
fun cla_meth' tac ctxt = Method.METHOD0 (FIRSTGOAL (tac (get_local_claset ctxt)));
5841
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1175
5885
6c920d876098 tuned attribute names;
wenzelm
parents: 5841
diff changeset
  1176
val cla_method = cla_args o cla_meth;
6c920d876098 tuned attribute names;
wenzelm
parents: 5841
diff changeset
  1177
val cla_method' = cla_args o cla_meth';
5841
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1178
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1179
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1180
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1181
(** setup_methods **)
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1182
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1183
val setup_methods = Method.add_methods
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1184
 [("single", Method.no_args single, "apply standard rule (single step)"),
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1185
  ("default", Method.no_args single, "apply standard rule (single step)"),
6502
bc30e13b36a8 improved 'single' method;
wenzelm
parents: 6492
diff changeset
  1186
  ("contradiction", Method.no_args contradiction, "proof by contradiction"),
5885
6c920d876098 tuned attribute names;
wenzelm
parents: 5841
diff changeset
  1187
  ("safe_tac", cla_method safe_tac, "safe_tac"),
6c920d876098 tuned attribute names;
wenzelm
parents: 5841
diff changeset
  1188
  ("safe_step", cla_method' safe_step_tac, "step_tac"),
6c920d876098 tuned attribute names;
wenzelm
parents: 5841
diff changeset
  1189
  ("fast", cla_method' fast_tac, "fast_tac"),
6c920d876098 tuned attribute names;
wenzelm
parents: 5841
diff changeset
  1190
  ("best", cla_method' best_tac, "best_tac"),
6c920d876098 tuned attribute names;
wenzelm
parents: 5841
diff changeset
  1191
  ("slow", cla_method' slow_tac, "slow_tac"),
6c920d876098 tuned attribute names;
wenzelm
parents: 5841
diff changeset
  1192
  ("slow_best", cla_method' slow_best_tac, "slow_best_tac")];
5841
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1193
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1194
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1195
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1196
(** theory setup **)
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1197
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1198
(* FIXME claset theory data *)
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1199
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1200
val setup = [LocalClaset.init, setup_attrs, setup_methods];
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1201
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1202
d05df8752a8a local claset theory data;
wenzelm
parents: 5757
diff changeset
  1203
end;