author | wenzelm |
Wed, 01 Sep 1999 21:22:38 +0200 | |
changeset 7423 | 28b48fcb0d55 |
parent 7273 | d80b9be87535 |
child 7558 | 08b2d5c94b8a |
permissions | -rw-r--r-- |
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(* Title: Provers/simplifier.ML |
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ID: $Id$ |
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Author: Tobias Nipkow and Markus Wenzel, TU Muenchen |
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Generic simplifier, suitable for most logics. See Pure/thm.ML for the |
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actual meta-level rewriting engine. |
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*) |
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infix 4 |
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setsubgoaler setloop addloop delloop setSSolver addSSolver setSolver |
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addSolver addsimps delsimps addeqcongs deleqcongs |
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setmksimps setmkeqTrue setmksym settermless addsimprocs delsimprocs; |
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signature BASIC_SIMPLIFIER = |
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sig |
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type simproc |
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val mk_simproc: string -> cterm list |
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-> (Sign.sg -> thm list -> term -> thm option) -> simproc |
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type simpset |
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val empty_ss: simpset |
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val rep_ss: simpset -> |
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{mss: meta_simpset, |
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subgoal_tac: simpset -> int -> tactic, |
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loop_tacs: (string * (int -> tactic))list, |
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unsafe_finish_tac: thm list -> int -> tactic, |
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finish_tac: thm list -> int -> tactic}; |
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val print_ss: simpset -> unit |
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val print_simpset: theory -> unit |
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val setsubgoaler: simpset * (simpset -> int -> tactic) -> simpset |
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val setloop: simpset * (int -> tactic) -> simpset |
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val addloop: simpset * (string * (int -> tactic)) -> simpset |
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val delloop: simpset * string -> simpset |
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val setSSolver: simpset * (thm list -> int -> tactic) -> simpset |
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val addSSolver: simpset * (thm list -> int -> tactic) -> simpset |
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val setSolver: simpset * (thm list -> int -> tactic) -> simpset |
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val addSolver: simpset * (thm list -> int -> tactic) -> simpset |
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val setmksimps: simpset * (thm -> thm list) -> simpset |
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val setmkeqTrue: simpset * (thm -> thm option) -> simpset |
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val setmksym: simpset * (thm -> thm option) -> simpset |
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val settermless: simpset * (term * term -> bool) -> simpset |
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val addsimps: simpset * thm list -> simpset |
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val delsimps: simpset * thm list -> simpset |
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val addeqcongs: simpset * thm list -> simpset |
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val deleqcongs: simpset * thm list -> simpset |
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val addsimprocs: simpset * simproc list -> simpset |
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val delsimprocs: simpset * simproc list -> simpset |
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val merge_ss: simpset * simpset -> simpset |
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val prems_of_ss: simpset -> thm list |
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val simpset_ref_of_sg: Sign.sg -> simpset ref |
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val simpset_ref_of: theory -> simpset ref |
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val simpset_of_sg: Sign.sg -> simpset |
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val simpset_of: theory -> simpset |
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val SIMPSET: (simpset -> tactic) -> tactic |
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val SIMPSET': (simpset -> 'a -> tactic) -> 'a -> tactic |
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val simpset: unit -> simpset |
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val simpset_ref: unit -> simpset ref |
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val Addsimps: thm list -> unit |
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val Delsimps: thm list -> unit |
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val Addsimprocs: simproc list -> unit |
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val Delsimprocs: simproc list -> unit |
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val simp_tac: simpset -> int -> tactic |
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val asm_simp_tac: simpset -> int -> tactic |
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val full_simp_tac: simpset -> int -> tactic |
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val asm_lr_simp_tac: simpset -> int -> tactic |
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val asm_full_simp_tac: simpset -> int -> tactic |
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val safe_asm_full_simp_tac: simpset -> int -> tactic |
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val Simp_tac: int -> tactic |
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val Asm_simp_tac: int -> tactic |
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val Full_simp_tac: int -> tactic |
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val Asm_lr_simp_tac: int -> tactic |
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val Asm_full_simp_tac: int -> tactic |
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val simplify: simpset -> thm -> thm |
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val asm_simplify: simpset -> thm -> thm |
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val full_simplify: simpset -> thm -> thm |
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val asm_full_simplify: simpset -> thm -> thm |
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end; |
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||
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signature SIMPLIFIER = |
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sig |
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include BASIC_SIMPLIFIER |
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val rewrite: simpset -> cterm -> thm |
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val asm_rewrite: simpset -> cterm -> thm |
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val full_rewrite: simpset -> cterm -> thm |
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val asm_full_rewrite: simpset -> cterm -> thm |
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val print_local_simpset: Proof.context -> unit |
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val get_local_simpset: Proof.context -> simpset |
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val put_local_simpset: simpset -> Proof.context -> Proof.context |
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val simp_add_global: theory attribute |
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val simp_del_global: theory attribute |
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val simp_add_local: Proof.context attribute |
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val simp_del_local: Proof.context attribute |
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val change_simpset_of: (simpset * 'a -> simpset) -> 'a -> theory -> theory |
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val simp_modifiers: (Args.T list -> (Method.modifier * Args.T list)) list |
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val setup: (theory -> theory) list |
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end; |
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structure Simplifier: SIMPLIFIER = |
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struct |
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(** simplification procedures **) |
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(* datatype simproc *) |
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datatype simproc = |
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Simproc of string * cterm list * (Sign.sg -> thm list -> term -> thm option) * stamp; |
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fun mk_simproc name lhss proc = |
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Simproc (name, map (Thm.cterm_fun Logic.varify) lhss, proc, stamp ()); |
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fun rep_simproc (Simproc args) = args; |
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(** simplification sets **) |
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(* type simpset *) |
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datatype simpset = |
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Simpset of { |
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mss: meta_simpset, |
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subgoal_tac: simpset -> int -> tactic, |
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loop_tacs: (string * (int -> tactic))list, |
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unsafe_finish_tac: thm list -> int -> tactic, |
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finish_tac: thm list -> int -> tactic}; |
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fun make_ss (mss, subgoal_tac, loop_tacs, unsafe_finish_tac, finish_tac) = |
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Simpset {mss = mss, subgoal_tac = subgoal_tac, loop_tacs = loop_tacs, |
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unsafe_finish_tac = unsafe_finish_tac, finish_tac = finish_tac}; |
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val empty_ss = |
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let val mss = Thm.set_mk_sym (Thm.empty_mss, Some o symmetric_fun) |
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in make_ss (mss, K (K no_tac), [], K (K no_tac), K (K no_tac)) end; |
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fun rep_ss (Simpset args) = args; |
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fun prems_of_ss (Simpset {mss, ...}) = Thm.prems_of_mss mss; |
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(* print simpsets *) |
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fun print_ss ss = |
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let |
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val Simpset {mss, ...} = ss; |
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val {simps, procs, congs} = Thm.dest_mss mss; |
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val pretty_thms = map Display.pretty_thm; |
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fun pretty_proc (name, lhss) = |
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Pretty.big_list (name ^ ":") (map Display.pretty_cterm lhss); |
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in |
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Pretty.writeln (Pretty.big_list "simplification rules:" (pretty_thms simps)); |
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Pretty.writeln (Pretty.big_list "simplification procedures:" (map pretty_proc procs)); |
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Pretty.writeln (Pretty.big_list "congruences:" (pretty_thms congs)) |
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end; |
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||
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(* extend simpsets *) |
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fun (Simpset {mss, subgoal_tac = _, loop_tacs, unsafe_finish_tac, finish_tac}) |
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setsubgoaler subgoal_tac = |
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make_ss (mss, subgoal_tac, loop_tacs, unsafe_finish_tac, finish_tac); |
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fun (Simpset {mss, subgoal_tac, loop_tacs = _, unsafe_finish_tac, finish_tac}) |
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setloop tac = |
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make_ss (mss, subgoal_tac, [("",tac)], unsafe_finish_tac, finish_tac); |
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fun (Simpset {mss, subgoal_tac, loop_tacs, unsafe_finish_tac, finish_tac}) |
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addloop tac = make_ss (mss, subgoal_tac, |
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(case assoc_string (loop_tacs,(fst tac)) of None => () | Some x => |
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warning ("overwriting looper "^fst tac); overwrite(loop_tacs,tac)), |
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unsafe_finish_tac, finish_tac); |
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fun (ss as Simpset {mss, subgoal_tac, loop_tacs, unsafe_finish_tac, finish_tac}) |
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delloop name = |
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let val (del, rest) = partition (fn (n, _) => n = name) loop_tacs in |
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if null del then (warning ("No such looper in simpset: " ^ name); ss) |
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else make_ss (mss, subgoal_tac, rest, unsafe_finish_tac, finish_tac) |
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end; |
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fun (Simpset {mss, subgoal_tac, loop_tacs, unsafe_finish_tac, ...}) |
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setSSolver finish_tac = |
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make_ss (mss, subgoal_tac, loop_tacs, unsafe_finish_tac, finish_tac); |
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fun (Simpset {mss, subgoal_tac, loop_tacs, unsafe_finish_tac, finish_tac}) |
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addSSolver tac = |
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make_ss (mss, subgoal_tac, loop_tacs, unsafe_finish_tac, |
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fn hyps => finish_tac hyps ORELSE' tac hyps); |
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fun (Simpset {mss, subgoal_tac, loop_tacs, unsafe_finish_tac = _, finish_tac}) |
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setSolver unsafe_finish_tac = |
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make_ss (mss, subgoal_tac, loop_tacs, unsafe_finish_tac, finish_tac); |
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fun (Simpset {mss, subgoal_tac, loop_tacs, unsafe_finish_tac, finish_tac}) |
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addSolver tac = |
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make_ss (mss, subgoal_tac, loop_tacs, |
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fn hyps => unsafe_finish_tac hyps ORELSE' tac hyps, finish_tac); |
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fun (Simpset {mss, subgoal_tac, loop_tacs, unsafe_finish_tac, finish_tac}) |
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setmksimps mk_simps = |
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make_ss (Thm.set_mk_rews (mss, map (Thm.strip_shyps o Drule.zero_var_indexes) o mk_simps), |
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subgoal_tac, loop_tacs, unsafe_finish_tac, finish_tac); |
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fun (Simpset {mss, subgoal_tac, loop_tacs, unsafe_finish_tac, finish_tac}) |
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setmkeqTrue mk_eq_True = |
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make_ss (Thm.set_mk_eq_True (mss, mk_eq_True), |
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subgoal_tac, loop_tacs, unsafe_finish_tac, finish_tac); |
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fun (Simpset {mss, subgoal_tac, loop_tacs, unsafe_finish_tac, finish_tac}) |
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setmksym mksym = |
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make_ss (Thm.set_mk_sym (mss, mksym), |
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subgoal_tac, loop_tacs, unsafe_finish_tac, finish_tac); |
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|
211 |
fun (Simpset {mss, subgoal_tac, loop_tacs, unsafe_finish_tac, finish_tac}) |
3551 | 212 |
settermless termless = |
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213 |
make_ss (Thm.set_termless (mss, termless), subgoal_tac, loop_tacs, |
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|
214 |
unsafe_finish_tac, finish_tac); |
3551 | 215 |
|
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|
216 |
fun (Simpset {mss, subgoal_tac, loop_tacs, unsafe_finish_tac, finish_tac}) |
3551 | 217 |
addsimps rews = |
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|
218 |
make_ss (Thm.add_simps (mss, rews), subgoal_tac, loop_tacs, |
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|
219 |
unsafe_finish_tac, finish_tac); |
2503 | 220 |
|
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|
221 |
fun (Simpset {mss, subgoal_tac, loop_tacs, unsafe_finish_tac, finish_tac}) |
3551 | 222 |
delsimps rews = |
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changeset
|
223 |
make_ss (Thm.del_simps (mss, rews), subgoal_tac, loop_tacs, |
381d6987f68d
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changeset
|
224 |
unsafe_finish_tac, finish_tac); |
2503 | 225 |
|
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|
226 |
fun (Simpset {mss, subgoal_tac, loop_tacs, unsafe_finish_tac, finish_tac}) |
3551 | 227 |
addeqcongs newcongs = |
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|
228 |
make_ss (Thm.add_congs (mss, newcongs), subgoal_tac, loop_tacs, |
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changeset
|
229 |
unsafe_finish_tac, finish_tac); |
2509 | 230 |
|
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changeset
|
231 |
fun (Simpset {mss, subgoal_tac, loop_tacs, unsafe_finish_tac, finish_tac}) |
3551 | 232 |
deleqcongs oldcongs = |
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changeset
|
233 |
make_ss (Thm.del_congs (mss, oldcongs), subgoal_tac, loop_tacs, |
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changeset
|
234 |
unsafe_finish_tac, finish_tac); |
2629 | 235 |
|
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|
236 |
fun (Simpset {mss, subgoal_tac, loop_tacs, unsafe_finish_tac, finish_tac}) |
3551 | 237 |
addsimprocs simprocs = |
238 |
make_ss |
|
239 |
(Thm.add_simprocs (mss, map rep_simproc simprocs), |
|
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changeset
|
240 |
subgoal_tac, loop_tacs, unsafe_finish_tac, finish_tac); |
2509 | 241 |
|
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|
242 |
fun (Simpset {mss, subgoal_tac, loop_tacs, unsafe_finish_tac, finish_tac}) |
3551 | 243 |
delsimprocs simprocs = |
244 |
make_ss |
|
245 |
(Thm.del_simprocs (mss, map rep_simproc simprocs), |
|
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|
246 |
subgoal_tac, loop_tacs, unsafe_finish_tac, finish_tac); |
2503 | 247 |
|
7273 | 248 |
fun clear_ss (Simpset {mss, subgoal_tac, loop_tacs, unsafe_finish_tac, finish_tac}) = |
249 |
make_ss (Thm.clear_mss mss, subgoal_tac, loop_tacs, unsafe_finish_tac, finish_tac); |
|
6911 | 250 |
|
2503 | 251 |
|
5886 | 252 |
(* merge simpsets *) (*NOTE: ignores tactics of 2nd simpset (except loopers)*) |
2503 | 253 |
|
3551 | 254 |
fun merge_ss |
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|
255 |
(Simpset {mss = mss1, loop_tacs = loop_tacs1, subgoal_tac, unsafe_finish_tac, finish_tac}, |
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|
256 |
Simpset {mss = mss2, loop_tacs = loop_tacs2, ...}) = |
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|
257 |
make_ss (Thm.merge_mss (mss1, mss2), subgoal_tac, |
7214
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changeset
|
258 |
merge_alists loop_tacs1 loop_tacs2, unsafe_finish_tac, finish_tac); |
2503 | 259 |
|
260 |
||
3557 | 261 |
|
5024 | 262 |
(** global and local simpset data **) |
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|
263 |
|
5842 | 264 |
(* theory data kind 'Provers/simpset' *) |
4795 | 265 |
|
5842 | 266 |
structure GlobalSimpsetArgs = |
5024 | 267 |
struct |
5842 | 268 |
val name = "Provers/simpset"; |
5024 | 269 |
type T = simpset ref; |
0 | 270 |
|
5024 | 271 |
val empty = ref empty_ss; |
6556 | 272 |
fun copy (ref ss) = (ref ss): T; (*create new reference!*) |
273 |
val prep_ext = copy; |
|
5024 | 274 |
fun merge (ref ss1, ref ss2) = ref (merge_ss (ss1, ss2)); |
275 |
fun print _ (ref ss) = print_ss ss; |
|
276 |
end; |
|
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|
277 |
|
5842 | 278 |
structure GlobalSimpset = TheoryDataFun(GlobalSimpsetArgs); |
279 |
val print_simpset = GlobalSimpset.print; |
|
280 |
val simpset_ref_of_sg = GlobalSimpset.get_sg; |
|
281 |
val simpset_ref_of = GlobalSimpset.get; |
|
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|
282 |
|
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|
283 |
|
4795 | 284 |
(* access global simpset *) |
0 | 285 |
|
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|
286 |
val simpset_of_sg = ! o simpset_ref_of_sg; |
6391 | 287 |
val simpset_of = simpset_of_sg o Theory.sign_of; |
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|
288 |
|
6391 | 289 |
fun SIMPSET tacf state = tacf (simpset_of_sg (Thm.sign_of_thm state)) state; |
290 |
fun SIMPSET' tacf i state = tacf (simpset_of_sg (Thm.sign_of_thm state)) i state; |
|
0 | 291 |
|
5028 | 292 |
val simpset = simpset_of o Context.the_context; |
6391 | 293 |
val simpset_ref = simpset_ref_of_sg o Theory.sign_of o Context.the_context; |
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|
294 |
|
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changeset
|
295 |
|
4795 | 296 |
(* change global simpset *) |
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changeset
|
297 |
|
7177 | 298 |
fun change_simpset_of f x thy = |
299 |
let val r = simpset_ref_of thy |
|
300 |
in r := f (! r, x); thy end; |
|
301 |
||
302 |
fun change_simpset f x = (change_simpset_of f x (Context.the_context ()); ()); |
|
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|
303 |
|
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changeset
|
304 |
val Addsimps = change_simpset (op addsimps); |
7dce11095b0a
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changeset
|
305 |
val Delsimps = change_simpset (op delsimps); |
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changeset
|
306 |
val Addsimprocs = change_simpset (op addsimprocs); |
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changeset
|
307 |
val Delsimprocs = change_simpset (op delsimprocs); |
2509 | 308 |
|
0 | 309 |
|
5842 | 310 |
(* proof data kind 'Provers/simpset' *) |
4795 | 311 |
|
5842 | 312 |
structure LocalSimpsetArgs = |
313 |
struct |
|
314 |
val name = "Provers/simpset"; |
|
315 |
type T = simpset; |
|
316 |
val init = simpset_of; |
|
317 |
fun print _ ss = print_ss ss; |
|
318 |
end; |
|
4795 | 319 |
|
5842 | 320 |
structure LocalSimpset = ProofDataFun(LocalSimpsetArgs); |
321 |
val print_local_simpset = LocalSimpset.print; |
|
322 |
val get_local_simpset = LocalSimpset.get; |
|
323 |
val put_local_simpset = LocalSimpset.put; |
|
7273 | 324 |
fun map_local_simpset f ctxt = put_local_simpset (f (get_local_simpset ctxt)) ctxt; |
4795 | 325 |
|
326 |
||
5886 | 327 |
(* attributes *) |
328 |
||
329 |
fun change_global_ss f (thy, th) = |
|
330 |
let val r = simpset_ref_of thy |
|
6096 | 331 |
in r := f (! r, [th]); (thy, th) end; |
5886 | 332 |
|
333 |
fun change_local_ss f (ctxt, th) = |
|
6096 | 334 |
let val ss = f (get_local_simpset ctxt, [th]) |
5886 | 335 |
in (put_local_simpset ss ctxt, th) end; |
336 |
||
337 |
val simp_add_global = change_global_ss (op addsimps); |
|
338 |
val simp_del_global = change_global_ss (op delsimps); |
|
339 |
val simp_add_local = change_local_ss (op addsimps); |
|
340 |
val simp_del_local = change_local_ss (op delsimps); |
|
341 |
||
342 |
||
3557 | 343 |
|
2503 | 344 |
(** simplification tactics **) |
0 | 345 |
|
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changeset
|
346 |
fun solve_all_tac (subgoal_tac, loop_tacs, unsafe_finish_tac) mss = |
3557 | 347 |
let |
348 |
val ss = |
|
7214
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oheimb
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changeset
|
349 |
make_ss (mss, subgoal_tac, loop_tacs,unsafe_finish_tac,unsafe_finish_tac); |
4612 | 350 |
val solve1_tac = (subgoal_tac ss THEN_ALL_NEW (K no_tac)) 1 |
3557 | 351 |
in DEPTH_SOLVE solve1_tac end; |
352 |
||
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diff
changeset
|
353 |
fun loop_tac loop_tacs = FIRST'(map snd loop_tacs); |
3557 | 354 |
|
7214
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oheimb
parents:
7177
diff
changeset
|
355 |
(*unsafe: may instantiate unknowns that appear also in other subgoals*) |
381d6987f68d
exchanged finish_tac and unsafe_finish_tac (the more important one) in simpset
oheimb
parents:
7177
diff
changeset
|
356 |
fun basic_gen_simp_tac mode finish_tac = |
381d6987f68d
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oheimb
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diff
changeset
|
357 |
fn (Simpset {mss, subgoal_tac, loop_tacs, unsafe_finish_tac, ...}) => |
3551 | 358 |
let |
4612 | 359 |
fun simp_loop_tac i = |
360 |
asm_rewrite_goal_tac mode |
|
7214
381d6987f68d
exchanged finish_tac and unsafe_finish_tac (the more important one) in simpset
oheimb
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diff
changeset
|
361 |
(solve_all_tac (subgoal_tac,loop_tacs,unsafe_finish_tac)) |
4612 | 362 |
mss i |
363 |
THEN (finish_tac (prems_of_mss mss) i ORELSE |
|
4668
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nipkow
parents:
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diff
changeset
|
364 |
TRY ((loop_tac loop_tacs THEN_ALL_NEW simp_loop_tac) i)) |
4612 | 365 |
in simp_loop_tac end; |
0 | 366 |
|
7214
381d6987f68d
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oheimb
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diff
changeset
|
367 |
fun gen_simp_tac mode |
381d6987f68d
exchanged finish_tac and unsafe_finish_tac (the more important one) in simpset
oheimb
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diff
changeset
|
368 |
(ss as Simpset {mss, subgoal_tac, loop_tacs, unsafe_finish_tac, ...}) = |
381d6987f68d
exchanged finish_tac and unsafe_finish_tac (the more important one) in simpset
oheimb
parents:
7177
diff
changeset
|
369 |
basic_gen_simp_tac mode unsafe_finish_tac ss; |
3551 | 370 |
|
4713 | 371 |
val simp_tac = gen_simp_tac (false, false, false); |
372 |
val asm_simp_tac = gen_simp_tac (false, true, false); |
|
373 |
val full_simp_tac = gen_simp_tac (true, false, false); |
|
4722
d2e44673c21e
The new asm_lr_simp_tac is the old asm_full_simp_tac.
nipkow
parents:
4713
diff
changeset
|
374 |
val asm_lr_simp_tac = gen_simp_tac (true, true, false); |
d2e44673c21e
The new asm_lr_simp_tac is the old asm_full_simp_tac.
nipkow
parents:
4713
diff
changeset
|
375 |
val asm_full_simp_tac = gen_simp_tac (true, true, true); |
0 | 376 |
|
2629 | 377 |
(*not totally safe: may instantiate unknowns that appear also in other subgoals*) |
7214
381d6987f68d
exchanged finish_tac and unsafe_finish_tac (the more important one) in simpset
oheimb
parents:
7177
diff
changeset
|
378 |
fun safe_asm_full_simp_tac (ss as Simpset {mss, subgoal_tac, loop_tacs, |
381d6987f68d
exchanged finish_tac and unsafe_finish_tac (the more important one) in simpset
oheimb
parents:
7177
diff
changeset
|
379 |
unsafe_finish_tac, finish_tac}) = |
381d6987f68d
exchanged finish_tac and unsafe_finish_tac (the more important one) in simpset
oheimb
parents:
7177
diff
changeset
|
380 |
basic_gen_simp_tac (true, true, true) finish_tac ss; |
2629 | 381 |
|
4795 | 382 |
(*the abstraction over the proof state delays the dereferencing*) |
4080
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diff
changeset
|
383 |
fun Simp_tac i st = simp_tac (simpset ()) i st; |
7dce11095b0a
new implicit simpset mechanism based on Sign.sg anytype data;
wenzelm
parents:
3728
diff
changeset
|
384 |
fun Asm_simp_tac i st = asm_simp_tac (simpset ()) i st; |
7dce11095b0a
new implicit simpset mechanism based on Sign.sg anytype data;
wenzelm
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diff
changeset
|
385 |
fun Full_simp_tac i st = full_simp_tac (simpset ()) i st; |
4722
d2e44673c21e
The new asm_lr_simp_tac is the old asm_full_simp_tac.
nipkow
parents:
4713
diff
changeset
|
386 |
fun Asm_lr_simp_tac i st = asm_lr_simp_tac (simpset ()) i st; |
4080
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new implicit simpset mechanism based on Sign.sg anytype data;
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changeset
|
387 |
fun Asm_full_simp_tac i st = asm_full_simp_tac (simpset ()) i st; |
406 | 388 |
|
3557 | 389 |
|
4795 | 390 |
|
5082 | 391 |
(** simplification rules and conversions **) |
3557 | 392 |
|
7214
381d6987f68d
exchanged finish_tac and unsafe_finish_tac (the more important one) in simpset
oheimb
parents:
7177
diff
changeset
|
393 |
fun simp rew mode |
381d6987f68d
exchanged finish_tac and unsafe_finish_tac (the more important one) in simpset
oheimb
parents:
7177
diff
changeset
|
394 |
(Simpset {mss, subgoal_tac, loop_tacs, unsafe_finish_tac, ...}) thm = |
3557 | 395 |
let |
7214
381d6987f68d
exchanged finish_tac and unsafe_finish_tac (the more important one) in simpset
oheimb
parents:
7177
diff
changeset
|
396 |
val tacf = solve_all_tac (subgoal_tac, loop_tacs, unsafe_finish_tac); |
4271
3a82492e70c5
changed Pure/Sequence interface -- isatool fixseq;
wenzelm
parents:
4259
diff
changeset
|
397 |
fun prover m th = apsome fst (Seq.pull (tacf m th)); |
5082 | 398 |
in rew mode prover mss thm end; |
399 |
||
400 |
val simp_thm = simp Drule.rewrite_thm; |
|
401 |
val simp_cterm = simp Drule.rewrite_cterm; |
|
3557 | 402 |
|
5082 | 403 |
val simplify = simp_thm (false, false, false); |
404 |
val asm_simplify = simp_thm (false, true, false); |
|
405 |
val full_simplify = simp_thm (true, false, false); |
|
406 |
val asm_full_simplify = simp_thm (true, true, false); |
|
407 |
||
408 |
val rewrite = simp_cterm (false, false, false); |
|
409 |
val asm_rewrite = simp_cterm (false, true, false); |
|
410 |
val full_rewrite = simp_cterm (true, false, false); |
|
411 |
val asm_full_rewrite = simp_cterm (true, true, false); |
|
3557 | 412 |
|
413 |
||
4795 | 414 |
|
5886 | 415 |
(** concrete syntax of attributes **) |
5842 | 416 |
|
5886 | 417 |
(* add / del *) |
5842 | 418 |
|
5928 | 419 |
val simpN = "simp"; |
6911 | 420 |
val asm_simpN = "asm_simp"; |
5928 | 421 |
val addN = "add"; |
422 |
val delN = "del"; |
|
6911 | 423 |
val onlyN = "only"; |
5928 | 424 |
val otherN = "other"; |
5842 | 425 |
|
5886 | 426 |
fun simp_att change = |
5928 | 427 |
(Args.$$$ addN >> K (op addsimps) || |
428 |
Args.$$$ delN >> K (op delsimps) || |
|
5886 | 429 |
Scan.succeed (op addsimps)) |
430 |
>> change |
|
431 |
|> Scan.lift |
|
432 |
|> Attrib.syntax; |
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val simp_attr = (simp_att change_global_ss, simp_att change_local_ss); |
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436 |
||
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(* conversions *) |
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fun conv_attr f = |
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(Attrib.no_args (Drule.rule_attribute (f o simpset_of)), |
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Attrib.no_args (Drule.rule_attribute (f o get_local_simpset))); |
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5842 | 442 |
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443 |
||
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(* setup_attrs *) |
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val setup_attrs = Attrib.add_attributes |
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[(simpN, simp_attr, "simplification rule"), |
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("simplify", conv_attr simplify, "simplify rule"), |
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("asm_simplify", conv_attr asm_simplify, "simplify rule, using assumptions"), |
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("full_simplify", conv_attr full_simplify, "fully simplify rule"), |
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("asm_full_simplify", conv_attr asm_full_simplify, "fully simplify rule, using assumptions")]; |
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452 |
||
453 |
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454 |
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(** proof methods **) |
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456 |
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(* simplification *) |
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458 |
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val simp_modifiers = |
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[Args.$$$ simpN -- Args.$$$ addN >> K (I, simp_add_local), |
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Args.$$$ simpN -- Args.$$$ delN >> K (I, simp_del_local), |
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Args.$$$ simpN -- Args.$$$ onlyN >> K (map_local_simpset clear_ss, simp_add_local), |
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Args.$$$ otherN >> K (I, I)]; |
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5928 | 464 |
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val simp_modifiers' = |
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[Args.$$$ addN >> K (I, simp_add_local), |
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Args.$$$ delN >> K (I, simp_del_local), |
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Args.$$$ onlyN >> K (map_local_simpset clear_ss, simp_add_local), |
|
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Args.$$$ otherN >> K (I, I)]; |
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5928 | 470 |
|
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val simp_args = Method.only_sectioned_args simp_modifiers'; |
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5842 | 472 |
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6911 | 473 |
fun simp_meth thin cut tac ctxt = Method.METHOD (fn facts => |
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FIRSTGOAL |
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((if thin then REPEAT_DETERM o etac Drule.thin_rl else K all_tac) |
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THEN' (if cut then Method.insert_tac facts else K all_tac) |
6534 | 477 |
THEN' tac (get_local_simpset ctxt))); |
5842 | 478 |
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6911 | 479 |
val simp_method = simp_args ooo simp_meth; |
5842 | 480 |
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481 |
||
482 |
(* setup_methods *) |
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483 |
||
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val setup_methods = Method.add_methods |
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[(simpN, simp_method true true (CHANGED oo asm_full_simp_tac), |
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"full simplification (including facts, excluding assumptions)"), |
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(asm_simpN, simp_method false true (CHANGED oo asm_full_simp_tac), |
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"full simplification (including facts and assumptions)"), |
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("simp_tac", simp_method false false simp_tac, "simp_tac (improper!)"), |
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("asm_simp_tac", simp_method false false asm_simp_tac, "asm_simp_tac (improper!)"), |
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("full_simp_tac", simp_method false false full_simp_tac, "full_simp_tac (improper!)"), |
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("asm_full_simp_tac", simp_method false false asm_full_simp_tac, "asm_full_simp_tac (improper!)"), |
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("asm_lr_simp_tac", simp_method false false asm_lr_simp_tac, "asm_lr_simp_tac (improper!)")]; |
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5842 | 494 |
|
495 |
||
496 |
||
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(** theory setup **) |
498 |
||
5842 | 499 |
val setup = [GlobalSimpset.init, LocalSimpset.init, setup_attrs, setup_methods]; |
4795 | 500 |
|
501 |
||
1243 | 502 |
end; |
4795 | 503 |
|
504 |
||
505 |
structure BasicSimplifier: BASIC_SIMPLIFIER = Simplifier; |
|
506 |
open BasicSimplifier; |