src/HOL/Tools/Sledgehammer/sledgehammer_isar.ML
author blanchet
Mon Apr 19 15:15:21 2010 +0200 (2010-04-19 ago)
changeset 36223 217ca1273786
parent 36220 f3655a3ae1ab
child 36235 61159615a0c5
permissions -rw-r--r--
make Sledgehammer's minimizer also minimize Isar proofs
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(*  Title:      HOL/Sledgehammer/sledgehammer_isar.ML
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    Author:     Jasmin Blanchette, TU Muenchen
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Adds "sledgehammer" and related commands to Isabelle/Isar's outer syntax.
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*)
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signature SLEDGEHAMMER_ISAR =
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sig
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  type params = ATP_Manager.params
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  val default_params : theory -> (string * string) list -> params
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end;
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structure Sledgehammer_Isar : SLEDGEHAMMER_ISAR =
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struct
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open Sledgehammer_Util
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open ATP_Manager
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open ATP_Minimal
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open ATP_Wrapper
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structure K = OuterKeyword and P = OuterParse
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fun add_to_relevance_override ns : relevance_override =
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  {add = ns, del = [], only = false}
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fun del_from_relevance_override ns : relevance_override =
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  {add = [], del = ns, only = false}
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fun only_relevance_override ns : relevance_override =
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  {add = ns, del = [], only = true}
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val no_relevance_override = add_to_relevance_override []
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fun merge_relevance_override_pairwise (r1 : relevance_override)
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                                      (r2 : relevance_override) =
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  {add = #add r1 @ #add r2, del = #del r1 @ #del r2,
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   only = #only r1 andalso #only r2}
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fun merge_relevance_overrides rs =
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  fold merge_relevance_override_pairwise rs (only_relevance_override [])
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type raw_param = string * string list
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val default_default_params =
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  [("debug", "false"),
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   ("verbose", "false"),
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   ("overlord", "false"),
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   ("respect_no_atp", "true"),
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   ("relevance_threshold", "50"),
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   ("convergence", "320"),
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   ("theory_relevant", "smart"),
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   ("higher_order", "smart"),
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   ("follow_defs", "false"),
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   ("isar_proof", "false"),
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   ("modulus", "1"),
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   ("sorts", "false"),
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   ("minimize_timeout", "5 s")]
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val alias_params =
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  [("atp", "atps")]
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val negated_alias_params =
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  [("no_debug", "debug"),
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   ("quiet", "verbose"),
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   ("no_overlord", "overlord"),
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   ("ignore_no_atp", "respect_no_atp"),
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   ("partial_types", "full_types"),
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   ("theory_irrelevant", "theory_relevant"),
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   ("first_order", "higher_order"),
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   ("dont_follow_defs", "follow_defs"),
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   ("metis_proof", "isar_proof"),
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   ("no_sorts", "sorts")]
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val property_dependent_params = ["atps", "full_types", "timeout"]
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fun is_known_raw_param s =
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  AList.defined (op =) default_default_params s orelse
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  AList.defined (op =) alias_params s orelse
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  AList.defined (op =) negated_alias_params s orelse
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  member (op =) property_dependent_params s
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fun check_raw_param (s, _) =
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  if is_known_raw_param s then ()
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  else error ("Unknown parameter: " ^ quote s ^ ".")
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fun unalias_raw_param (name, value) =
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  case AList.lookup (op =) alias_params name of
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    SOME name' => (name', value)
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  | NONE =>
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    case AList.lookup (op =) negated_alias_params name of
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      SOME name' => (name', case value of
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                              ["false"] => ["true"]
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                            | ["true"] => ["false"]
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                            | [] => ["false"]
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                            | _ => value)
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    | NONE => (name, value)
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structure Data = Theory_Data(
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  type T = raw_param list
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  val empty = default_default_params |> map (apsnd single)
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  val extend = I
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  fun merge p : T = AList.merge (op =) (K true) p)
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(* Don't even try to start ATPs that are not installed.
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   Hack: Should not rely on naming convention. *)
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val filter_atps =
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  space_explode " "
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  #> filter (fn s => String.isPrefix "remote_" s orelse
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                     getenv (String.map Char.toUpper s ^ "_HOME") <> "")
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  #> space_implode " "
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val set_default_raw_param = Data.map o AList.update (op =) o unalias_raw_param
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fun default_raw_params thy =
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  Data.get thy
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  |> fold (AList.default (op =))
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          [("atps", [filter_atps (!atps)]),
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           ("full_types", [if !full_types then "true" else "false"]),
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           ("timeout", let val timeout = !timeout in
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                         [if timeout <= 0 then "none"
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                          else string_of_int timeout ^ " s"]
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                       end)]
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val infinity_time_in_secs = 60 * 60 * 24 * 365
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val the_timeout = the_default (Time.fromSeconds infinity_time_in_secs)
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fun extract_params thy default_params override_params =
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  let
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    val override_params = map unalias_raw_param override_params
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    val raw_params = rev override_params @ rev default_params
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    val lookup = Option.map (space_implode " ") o AList.lookup (op =) raw_params
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    val lookup_string = the_default "" o lookup
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    fun general_lookup_bool option default_value name =
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      case lookup name of
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        SOME s => parse_bool_option option name s
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      | NONE => default_value
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    val lookup_bool = the o general_lookup_bool false (SOME false)
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    val lookup_bool_option = general_lookup_bool true NONE
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    fun lookup_time name =
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      the_timeout (case lookup name of
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                     NONE => NONE
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                   | SOME s => parse_time_option name s)
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    fun lookup_int name =
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      case lookup name of
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        NONE => 0
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      | SOME s => case Int.fromString s of
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                    SOME n => n
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                  | NONE => error ("Parameter " ^ quote name ^
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                                   " must be assigned an integer value.")
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    val debug = lookup_bool "debug"
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    val verbose = debug orelse lookup_bool "verbose"
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    val overlord = lookup_bool "overlord"
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    val atps = lookup_string "atps" |> space_explode " "
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    val full_types = lookup_bool "full_types"
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    val respect_no_atp = lookup_bool "respect_no_atp"
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    val relevance_threshold =
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      0.01 * Real.fromInt (lookup_int "relevance_threshold")
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    val convergence = 0.01 * Real.fromInt (lookup_int "convergence")
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    val theory_relevant = lookup_bool_option "theory_relevant"
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    val higher_order = lookup_bool_option "higher_order"
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    val follow_defs = lookup_bool "follow_defs"
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    val isar_proof = lookup_bool "isar_proof"
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    val modulus = Int.max (1, lookup_int "modulus")
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    val sorts = lookup_bool "sorts"
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    val timeout = lookup_time "timeout"
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    val minimize_timeout = lookup_time "minimize_timeout"
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  in
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    {debug = debug, verbose = verbose, overlord = overlord, atps = atps,
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     full_types = full_types, respect_no_atp = respect_no_atp,
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     relevance_threshold = relevance_threshold, convergence = convergence,
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     theory_relevant = theory_relevant, higher_order = higher_order,
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     follow_defs = follow_defs, isar_proof = isar_proof, modulus = modulus,
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     sorts = sorts, timeout = timeout, minimize_timeout = minimize_timeout}
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  end
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fun get_params thy = extract_params thy (default_raw_params thy)
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fun default_params thy = get_params thy o map (apsnd single)
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fun minimize override_params old_style_args i fact_refs state =
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  let
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    val thy = Proof.theory_of state
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    val ctxt = Proof.context_of state
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    fun theorems_from_refs ctxt =
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      map (fn fact_ref =>
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              let
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                val ths = ProofContext.get_fact ctxt fact_ref
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                val name' = Facts.string_of_ref fact_ref
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              in (name', ths) end)
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    fun get_time_limit_arg s =
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      (case Int.fromString s of
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        SOME t => Time.fromSeconds t
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      | NONE => error ("Invalid time limit: " ^ quote s ^ "."))
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    fun get_opt (name, a) (p, t) =
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      (case name of
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        "time" => (p, get_time_limit_arg a)
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      | "atp" => (a, t)
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      | n => error ("Invalid argument: " ^ n ^ "."))
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    val {atps, minimize_timeout, ...} = get_params thy override_params
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    val (atp, timeout) = fold get_opt old_style_args (hd atps, minimize_timeout)
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    val params =
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      get_params thy
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          (override_params @
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           [("atps", [atp]),
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            ("minimize_timeout",
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             [string_of_int (Time.toMilliseconds timeout) ^ " ms"])])
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    val prover =
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      (case get_prover thy atp of
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        SOME prover => prover
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      | NONE => error ("Unknown ATP: " ^ quote atp ^ "."))
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    val name_thms_pairs = theorems_from_refs ctxt fact_refs
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  in
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    priority (#2 (minimize_theorems params prover atp i state name_thms_pairs))
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  end
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val runN = "run"
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val minimizeN = "minimize"
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val messagesN = "messages"
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val available_atpsN = "available_atps"
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val running_atpsN = "running_atps"
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val kill_atpsN = "kill_atps"
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val refresh_tptpN = "refresh_tptp"
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val helpN = "help"
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fun minimizize_raw_param_name "timeout" = "minimize_timeout"
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  | minimizize_raw_param_name name = name
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fun hammer_away override_params subcommand opt_i relevance_override state =
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  let
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    val thy = Proof.theory_of state
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    val _ = List.app check_raw_param override_params
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  in
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    if subcommand = runN then
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      sledgehammer (get_params thy override_params) (the_default 1 opt_i)
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                   relevance_override state
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    else if subcommand = minimizeN then
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      minimize (map (apfst minimizize_raw_param_name) override_params) []
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               (the_default 1 opt_i) (#add relevance_override) state
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    else if subcommand = messagesN then
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      messages opt_i
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    else if subcommand = available_atpsN then
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      available_atps thy
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    else if subcommand = running_atpsN then
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      running_atps ()
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    else if subcommand = kill_atpsN then
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      kill_atps ()
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    else if subcommand = refresh_tptpN then
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      refresh_systems_on_tptp ()
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    else
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      error ("Unknown subcommand: " ^ quote subcommand ^ ".")
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  end
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fun sledgehammer_trans (((subcommand, params), relevance_override), opt_i) =
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  Toplevel.keep (hammer_away params subcommand opt_i relevance_override
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                 o Toplevel.proof_of)
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fun string_for_raw_param (name, value) = name ^ " = " ^ space_implode " " value
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fun sledgehammer_params_trans params =
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  Toplevel.theory
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      (fold set_default_raw_param params
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       #> tap (fn thy => 
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                  writeln ("Default parameters for Sledgehammer:\n" ^
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                           (case rev (default_raw_params thy) of
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                              [] => "none"
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                            | params =>
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                              (map check_raw_param params;
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                               params |> map string_for_raw_param
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                                      |> sort_strings |> cat_lines)))))
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val parse_key = Scan.repeat1 P.typ_group >> space_implode " "
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val parse_value = Scan.repeat1 P.xname
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val parse_param = parse_key -- Scan.optional (P.$$$ "=" |-- parse_value) []
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val parse_params = Scan.optional (Args.bracks (P.list parse_param)) []
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val parse_fact_refs =
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  Scan.repeat1 (Scan.unless (P.name -- Args.colon)
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                            (P.xname -- Scan.option Attrib.thm_sel)
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                >> (fn (name, interval) =>
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                       Facts.Named ((name, Position.none), interval)))
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val parse_relevance_chunk =
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  (Args.add |-- Args.colon |-- parse_fact_refs >> add_to_relevance_override)
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  || (Args.del |-- Args.colon |-- parse_fact_refs
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      >> del_from_relevance_override)
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  || (parse_fact_refs >> only_relevance_override)
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val parse_relevance_override =
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  Scan.optional (Args.parens (Scan.repeat parse_relevance_chunk
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                              >> merge_relevance_overrides))
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                (add_to_relevance_override [])
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val parse_sledgehammer_command =
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  (Scan.optional P.short_ident runN -- parse_params -- parse_relevance_override
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   -- Scan.option P.nat) #>> sledgehammer_trans
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val parse_sledgehammer_params_command =
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  parse_params #>> sledgehammer_params_trans
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val parse_minimize_args =
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  Scan.optional (Args.bracks (P.list (P.short_ident --| P.$$$ "=" -- P.xname)))
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                []
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val _ =
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  OuterSyntax.improper_command "atp_kill" "kill all managed provers" K.diag
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    (Scan.succeed (Toplevel.no_timing o Toplevel.imperative kill_atps))
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val _ =
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  OuterSyntax.improper_command "atp_info"
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    "print information about managed provers" K.diag
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    (Scan.succeed (Toplevel.no_timing o Toplevel.imperative running_atps))
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val _ =
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  OuterSyntax.improper_command "atp_messages"
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    "print recent messages issued by managed provers" K.diag
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    (Scan.option (P.$$$ "(" |-- P.nat --| P.$$$ ")") >>
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      (fn limit => Toplevel.no_timing
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                   o Toplevel.imperative (fn () => messages limit)))
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val _ =
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  OuterSyntax.improper_command "print_atps" "print external provers" K.diag
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    (Scan.succeed (Toplevel.no_timing o Toplevel.unknown_theory o
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      Toplevel.keep (available_atps o Toplevel.theory_of)))
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val _ =
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  OuterSyntax.improper_command "atp_minimize"
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    "minimize theorem list with external prover" K.diag
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    (parse_minimize_args -- parse_fact_refs >> (fn (args, fact_refs) =>
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      Toplevel.no_timing o Toplevel.unknown_proof o
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        Toplevel.keep (minimize [] args 1 fact_refs o Toplevel.proof_of)))
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val _ =
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  OuterSyntax.improper_command "sledgehammer"
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    "search for first-order proof using automatic theorem provers" K.diag
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    parse_sledgehammer_command
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val _ =
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  OuterSyntax.command "sledgehammer_params"
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   322
    "set and display the default parameters for Sledgehammer" K.thy_decl
blanchet@35963
   323
    parse_sledgehammer_params_command
blanchet@35866
   324
blanchet@35866
   325
end;