--- a/src/Tools/quickcheck.ML Thu Feb 28 12:24:24 2013 +0100
+++ b/src/Tools/quickcheck.ML Thu Feb 28 12:43:28 2013 +0100
@@ -11,7 +11,7 @@
val noneN: string
val unknownN: string
val setup: theory -> theory
- (* configuration *)
+ (*configuration*)
val auto: bool Unsynchronized.ref
val batch_tester : string Config.T
val size : int Config.T
@@ -22,7 +22,7 @@
val timeout : real Config.T
val timing : bool Config.T
val genuine_only : bool Config.T
- val abort_potential : bool Config.T
+ val abort_potential : bool Config.T
val quiet : bool Config.T
val verbose : bool Config.T
val use_subtype : bool Config.T
@@ -41,7 +41,7 @@
datatype report = Report of
{ iterations : int, raised_match_errors : int,
satisfied_assms : int list, positive_concl_tests : int }
- (* quickcheck's result *)
+ (*quickcheck's result*)
datatype result =
Result of
{counterexample : (bool * (string * term) list) option,
@@ -51,11 +51,12 @@
val empty_result : result
val found_counterexample : result -> bool
val add_timing : (string * int) -> result Unsynchronized.ref -> unit
- val add_response : string list -> term list -> (bool * term list) option -> result Unsynchronized.ref -> unit
+ val add_response : string list -> term list -> (bool * term list) option ->
+ result Unsynchronized.ref -> unit
val add_report : int -> report option -> result Unsynchronized.ref -> unit
val counterexample_of : result -> (bool * (string * term) list) option
val timings_of : result -> (string * int) list
- (* registering testers & generators *)
+ (*registering testers & generators*)
type tester =
Proof.context -> bool -> (string * typ) list -> (term * term list) list -> result list
val add_tester : string * (bool Config.T * tester) -> Context.generic -> Context.generic
@@ -65,19 +66,20 @@
val add_batch_validator :
string * (Proof.context -> term list -> (int -> bool) list)
-> Context.generic -> Context.generic
- (* basic operations *)
+ (*basic operations*)
val message : Proof.context -> string -> unit
val verbose_message : Proof.context -> string -> unit
val limit : Time.time -> (bool * bool) -> (unit -> 'a) -> (unit -> 'a) -> unit -> 'a
val pretty_counterex : Proof.context -> bool ->
((bool * (string * term) list) * (term * term) list) option -> Pretty.T
- (* testing terms and proof states *)
+ (*testing terms and proof states*)
val mk_batch_validator : Proof.context -> term list -> (int -> bool) list option
val mk_batch_tester : Proof.context -> term list -> (int -> term list option) list option
val active_testers : Proof.context -> tester list
- val test_terms :
- Proof.context -> bool * bool -> (string * typ) list -> (term * term list) list -> result list option
- val quickcheck: (string * string list) list -> int -> Proof.state -> (bool * (string * term) list) option
+ val test_terms : Proof.context -> bool * bool -> (string * typ) list ->
+ (term * term list) list -> result list option
+ val quickcheck: (string * string list) list -> int -> Proof.state ->
+ (bool * (string * term) list) option
end;
structure Quickcheck : QUICKCHECK =
@@ -89,6 +91,7 @@
val noneN = "none"
val unknownN = "unknown"
+
(* preferences *)
val auto = Unsynchronized.ref false;
@@ -100,12 +103,14 @@
"auto-quickcheck"
"Run Quickcheck automatically.") ());
+
(* quickcheck report *)
datatype report = Report of
{ iterations : int, raised_match_errors : int,
satisfied_assms : int list, positive_concl_tests : int }
+
(* Quickcheck Result *)
datatype result = Result of
@@ -155,6 +160,7 @@
fun add_response names eval_terms response result_ref =
Unsynchronized.change result_ref (set_response names eval_terms response)
+
(* expectation *)
datatype expectation = No_Expectation | No_Counterexample | Counterexample;
@@ -162,7 +168,7 @@
fun merge_expectation (expect1, expect2) =
if expect1 = expect2 then expect1 else No_Expectation
-(* quickcheck configuration -- default parameters, test generators *)
+(*quickcheck configuration -- default parameters, test generators*)
val batch_tester = Attrib.setup_config_string @{binding quickcheck_batch_tester} (K "")
val size = Attrib.setup_config_int @{binding quickcheck_size} (K 10)
val iterations = Attrib.setup_config_int @{binding quickcheck_iterations} (K 100)
@@ -206,7 +212,7 @@
(merge (op =) (default_type1, default_type2), merge_expectation (expect1, expect2));
type tester =
- Proof.context -> bool -> (string * typ) list -> (term * term list) list -> result list
+ Proof.context -> bool -> (string * typ) list -> (term * term list) list -> result list;
structure Data = Generic_Data
(
@@ -245,45 +251,49 @@
in
map snd (filter (fn (active, _) => Config.get ctxt active) testers)
end
-
+
fun set_active_testers [] gen_ctxt = gen_ctxt
| set_active_testers testers gen_ctxt =
- let
- val registered_testers = (fst o fst o Data.get) gen_ctxt
- in
- fold (fn (name, (config, _)) => Config.put_generic config (member (op =) testers name))
- registered_testers gen_ctxt
- end
-
+ let
+ val registered_testers = (fst o fst o Data.get) gen_ctxt
+ in
+ fold (fn (name, (config, _)) => Config.put_generic config (member (op =) testers name))
+ registered_testers gen_ctxt
+ end;
+
+
(* generating tests *)
fun gen_mk_tester lookup ctxt v =
let
val name = Config.get ctxt batch_tester
- val tester = case lookup ctxt name
- of NONE => error ("No such quickcheck batch-tester: " ^ name)
- | SOME tester => tester ctxt;
+ val tester =
+ (case lookup ctxt name of
+ NONE => error ("No such quickcheck batch-tester: " ^ name)
+ | SOME tester => tester ctxt);
in
if Config.get ctxt quiet then
try tester v
else
let (* FIXME !?!? *)
val tester = Exn.interruptible_capture tester v
- in case Exn.get_res tester of
+ in
+ (case Exn.get_res tester of
NONE => SOME (Exn.release tester)
- | SOME tester => SOME tester
+ | SOME tester => SOME tester)
end
- end
+ end;
val mk_batch_tester =
- gen_mk_tester (fn ctxt => AList.lookup (op =) ((fst o snd o fst o Data.get o Context.Proof) ctxt))
+ gen_mk_tester (fn ctxt => AList.lookup (op =) ((fst o snd o fst o Data.get o Context.Proof) ctxt));
val mk_batch_validator =
- gen_mk_tester (fn ctxt => AList.lookup (op =) ((snd o snd o fst o Data.get o Context.Proof) ctxt))
-
+ gen_mk_tester (fn ctxt => AList.lookup (op =) ((snd o snd o fst o Data.get o Context.Proof) ctxt));
+
+
(* testing propositions *)
type compile_generator =
- Proof.context -> (term * term list) list -> int list -> term list option * report option
+ Proof.context -> (term * term list) list -> int list -> term list option * report option;
fun limit timeout (limit_time, is_interactive) f exc () =
if limit_time then
@@ -291,51 +301,53 @@
handle TimeLimit.TimeOut =>
if is_interactive then exc () else raise TimeLimit.TimeOut
else
- f ()
+ f ();
+
+fun message ctxt s = if Config.get ctxt quiet then () else Output.urgent_message s;
-fun message ctxt s = if Config.get ctxt quiet then () else Output.urgent_message s
-
-fun verbose_message ctxt s = if not (Config.get ctxt quiet) andalso Config.get ctxt verbose
- then Output.urgent_message s else ()
+fun verbose_message ctxt s =
+ if not (Config.get ctxt quiet) andalso Config.get ctxt verbose
+ then Output.urgent_message s else ();
fun test_terms ctxt (limit_time, is_interactive) insts goals =
- case active_testers ctxt of
+ (case active_testers ctxt of
[] => error "No active testers for quickcheck"
| testers =>
limit (seconds (Config.get ctxt timeout)) (limit_time, is_interactive)
(fn () => Par_List.get_some (fn tester =>
- tester ctxt (length testers > 1) insts goals |>
- (fn result => if exists found_counterexample result then SOME result else NONE)) testers)
- (fn () => (message ctxt "Quickcheck ran out of time"; NONE)) ();
+ tester ctxt (length testers > 1) insts goals |>
+ (fn result => if exists found_counterexample result then SOME result else NONE)) testers)
+ (fn () => (message ctxt "Quickcheck ran out of time"; NONE)) ());
fun all_axioms_of ctxt t =
let
- val intros = Locale.get_intros ctxt
- val unfolds = Locale.get_unfolds ctxt
- fun retrieve_prems thms t =
- case filter (fn th => Term.could_unify (Thm.concl_of th, t)) thms of
- [] => NONE
+ val intros = Locale.get_intros ctxt;
+ val unfolds = Locale.get_unfolds ctxt;
+ fun retrieve_prems thms t =
+ (case filter (fn th => Term.could_unify (Thm.concl_of th, t)) thms of
+ [] => NONE
| [th] =>
- let
- val (tyenv, tenv) =
- Pattern.match (Proof_Context.theory_of ctxt) (Thm.concl_of th, t) (Vartab.empty, Vartab.empty)
- in SOME (map (Envir.subst_term (tyenv, tenv)) (Thm.prems_of th)) end
+ let
+ val (tyenv, tenv) =
+ Pattern.match (Proof_Context.theory_of ctxt)
+ (Thm.concl_of th, t) (Vartab.empty, Vartab.empty)
+ in SOME (map (Envir.subst_term (tyenv, tenv)) (Thm.prems_of th)) end);
fun all t =
- case retrieve_prems intros t of
+ (case retrieve_prems intros t of
NONE => retrieve_prems unfolds t
- | SOME ts => SOME (maps (fn t => the_default [t] (all t)) ts)
+ | SOME ts => SOME (maps (fn t => the_default [t] (all t)) ts));
in
all t
- end
+ end;
fun locale_config_of s =
let
- val cs = space_explode " " s
+ val cs = space_explode " " s;
in
if forall (fn c => c = "expand" orelse c = "interpret") cs then cs
else (warning ("Invalid quickcheck_locale setting: falling back to the default setting.");
["interpret", "expand"])
- end
+ end;
fun test_goal (time_limit, is_interactive) (insts, eval_terms) i state =
let
@@ -346,34 +358,46 @@
| strip t = t;
val {goal = st, ...} = Proof.raw_goal state;
val (gi, frees) = Logic.goal_params (prop_of st) i;
- val some_locale = case (Option.map #target o Named_Target.peek) lthy
- of NONE => NONE
+ val some_locale =
+ (case (Option.map #target o Named_Target.peek) lthy of
+ NONE => NONE
| SOME "" => NONE
- | SOME locale => SOME locale;
- val assms = if Config.get lthy no_assms then [] else case some_locale
- of NONE => Assumption.all_assms_of lthy
- | SOME locale => Assumption.local_assms_of lthy (Locale.init locale thy);
+ | SOME locale => SOME locale);
+ val assms =
+ if Config.get lthy no_assms then []
+ else
+ (case some_locale of
+ NONE => Assumption.all_assms_of lthy
+ | SOME locale => Assumption.local_assms_of lthy (Locale.init locale thy));
val proto_goal = Logic.list_implies (map Thm.term_of assms, subst_bounds (frees, strip gi));
- fun axioms_of locale = case fst (Locale.specification_of thy locale) of
+ fun axioms_of locale =
+ (case fst (Locale.specification_of thy locale) of
NONE => []
- | SOME t => the_default [] (all_axioms_of lthy t)
- val config = locale_config_of (Config.get lthy locale)
- val goals = case some_locale
- of NONE => [(proto_goal, eval_terms)]
- | SOME locale => fold (fn c =>
- if c = "expand" then cons (Logic.list_implies (axioms_of locale, proto_goal), eval_terms) else
- if c = "interpret" then
- append (map (fn (_, phi) => (Morphism.term phi proto_goal, map (Morphism.term phi) eval_terms))
- (Locale.registrations_of (Context.Theory thy) (*FIXME*) locale)) else I) config [];
- val _ = verbose_message lthy (Pretty.string_of
- (Pretty.big_list ("Checking goals: ") (map (Syntax.pretty_term lthy o fst) goals)))
+ | SOME t => the_default [] (all_axioms_of lthy t));
+ val config = locale_config_of (Config.get lthy locale);
+ val goals =
+ (case some_locale of
+ NONE => [(proto_goal, eval_terms)]
+ | SOME locale =>
+ fold (fn c =>
+ if c = "expand" then cons (Logic.list_implies (axioms_of locale, proto_goal), eval_terms)
+ else if c = "interpret" then
+ append (map (fn (_, phi) =>
+ (Morphism.term phi proto_goal, map (Morphism.term phi) eval_terms))
+ (Locale.registrations_of (Context.Theory thy) (*FIXME*) locale))
+ else I) config []);
+ val _ =
+ verbose_message lthy
+ (Pretty.string_of
+ (Pretty.big_list ("Checking goals: ") (map (Syntax.pretty_term lthy o fst) goals)));
in
test_terms lthy (time_limit, is_interactive) insts goals
- end
+ end;
+
(* pretty printing *)
-fun tool_name auto = (if auto then "Auto " else "") ^ "Quickcheck"
+fun tool_name auto = (if auto then "Auto " else "") ^ "Quickcheck";
fun pretty_counterex ctxt auto NONE =
Pretty.str (tool_name auto ^ " found no counterexample." ^ Config.get ctxt tag)
@@ -390,39 +414,42 @@
Pretty.block [Syntax.pretty_term ctxt t, Pretty.str " =", Pretty.brk 1,
Syntax.pretty_term ctxt u]) (rev eval_terms))));
+
(* Isar commands *)
-fun read_nat s = case (Library.read_int o Symbol.explode) s
- of (k, []) => if k >= 0 then k
+fun read_nat s =
+ (case (Library.read_int o Symbol.explode) s of
+ (k, []) =>
+ if k >= 0 then k
else error ("Not a natural number: " ^ s)
- | (_, _ :: _) => error ("Not a natural number: " ^ s);
+ | (_, _ :: _) => error ("Not a natural number: " ^ s));
fun read_bool "false" = false
| read_bool "true" = true
- | read_bool s = error ("Not a Boolean value: " ^ s)
+ | read_bool s = error ("Not a Boolean value: " ^ s);
fun read_real s =
- case (Real.fromString s) of
+ (case (Real.fromString s) of
SOME s => s
- | NONE => error ("Not a real number: " ^ s)
+ | NONE => error ("Not a real number: " ^ s));
fun read_expectation "no_expectation" = No_Expectation
| read_expectation "no_counterexample" = No_Counterexample
| read_expectation "counterexample" = Counterexample
- | read_expectation s = error ("Not an expectation value: " ^ s)
+ | read_expectation s = error ("Not an expectation value: " ^ s);
-fun valid_tester_name genctxt name = AList.defined (op =) (fst (fst (Data.get genctxt))) name
-
+fun valid_tester_name genctxt name = AList.defined (op =) (fst (fst (Data.get genctxt))) name;
+
fun parse_tester name (testers, genctxt) =
if valid_tester_name genctxt name then
- (insert (op =) name testers, genctxt)
+ (insert (op =) name testers, genctxt)
else
- error ("Unknown tester: " ^ name)
+ error ("Unknown tester: " ^ name);
fun parse_test_param ("tester", args) = fold parse_tester args
| parse_test_param ("size", [arg]) = apsnd (Config.put_generic size (read_nat arg))
| parse_test_param ("iterations", [arg]) = apsnd (Config.put_generic iterations (read_nat arg))
- | parse_test_param ("depth", [arg]) = apsnd (Config.put_generic depth (read_nat arg))
+ | parse_test_param ("depth", [arg]) = apsnd (Config.put_generic depth (read_nat arg))
| parse_test_param ("default_type", arg) = (fn (testers, gen_ctxt) =>
(testers, map_test_params
((apfst o K) (map (Proof_Context.read_typ (Context.proof_of gen_ctxt)) arg)) gen_ctxt))
@@ -434,42 +461,42 @@
| parse_test_param ("quiet", [arg]) = apsnd (Config.put_generic quiet (read_bool arg))
| parse_test_param ("verbose", [arg]) = apsnd (Config.put_generic verbose (read_bool arg))
| parse_test_param ("tag", [arg]) = apsnd (Config.put_generic tag arg)
- | parse_test_param ("use_subtype", [arg]) = apsnd (Config.put_generic use_subtype (read_bool arg))
+ | parse_test_param ("use_subtype", [arg]) = apsnd (Config.put_generic use_subtype (read_bool arg))
| parse_test_param ("timeout", [arg]) = apsnd (Config.put_generic timeout (read_real arg))
| parse_test_param ("finite_types", [arg]) = apsnd (Config.put_generic finite_types (read_bool arg))
| parse_test_param ("allow_function_inversion", [arg]) =
apsnd (Config.put_generic allow_function_inversion (read_bool arg))
| parse_test_param ("finite_type_size", [arg]) =
apsnd (Config.put_generic finite_type_size (read_nat arg))
- | parse_test_param (name, _) = (fn (testers, genctxt) =>
- if valid_tester_name genctxt name then
- (insert (op =) name testers, genctxt)
- else error ("Unknown tester or test parameter: " ^ name));
+ | parse_test_param (name, _) =
+ (fn (testers, genctxt) =>
+ if valid_tester_name genctxt name then
+ (insert (op =) name testers, genctxt)
+ else error ("Unknown tester or test parameter: " ^ name));
fun proof_map_result f = apsnd Context.the_proof o f o Context.Proof;
fun parse_test_param_inst (name, arg) ((insts, eval_terms), (testers, ctxt)) =
- case try (Proof_Context.read_typ ctxt) name
- of SOME (TFree (v, _)) =>
- ((AList.update (op =) (v, Proof_Context.read_typ ctxt (the_single arg)) insts, eval_terms),
- (testers, ctxt))
- | NONE => (case name of
- "eval" => ((insts, eval_terms @ map (Syntax.read_term ctxt) arg), (testers, ctxt))
- | _ => ((insts, eval_terms),
- proof_map_result (fn gen_ctxt => parse_test_param (name, arg) (testers, gen_ctxt)) ctxt));
+ (case try (Proof_Context.read_typ ctxt) name of
+ SOME (TFree (v, _)) =>
+ ((AList.update (op =) (v, Proof_Context.read_typ ctxt (the_single arg)) insts, eval_terms),
+ (testers, ctxt))
+ | NONE =>
+ (case name of
+ "eval" => ((insts, eval_terms @ map (Syntax.read_term ctxt) arg), (testers, ctxt))
+ | _ =>
+ ((insts, eval_terms),
+ proof_map_result (fn gen_ctxt => parse_test_param (name, arg) (testers, gen_ctxt)) ctxt)));
fun quickcheck_params_cmd args = Context.theory_map
(fn gen_ctxt => uncurry set_active_testers (fold parse_test_param args ([], gen_ctxt)));
fun check_expectation state results =
- (if is_some results andalso expect (Proof.context_of state) = No_Counterexample
- then
- error ("quickcheck expected to find no counterexample but found one")
- else
- (if is_none results andalso expect (Proof.context_of state) = Counterexample
- then
- error ("quickcheck expected to find a counterexample but did not find one")
- else ()))
+ if is_some results andalso expect (Proof.context_of state) = No_Counterexample then
+ error "quickcheck expected to find no counterexample but found one"
+ else if is_none results andalso expect (Proof.context_of state) = Counterexample then
+ error "quickcheck expected to find a counterexample but did not find one"
+ else ();
fun gen_quickcheck args i state =
state
@@ -477,16 +504,17 @@
apsnd (fn (testers, ctxt) => Context.proof_map (set_active_testers testers) ctxt)
(fold parse_test_param_inst args (([], []), ([], ctxt))))
|> (fn ((insts, eval_terms), state') => test_goal (true, true) (insts, eval_terms) i state'
- |> tap (check_expectation state') |> rpair state')
+ |> tap (check_expectation state') |> rpair state');
fun quickcheck args i state =
- Option.map (the o get_first counterexample_of) (fst (gen_quickcheck args i state))
+ Option.map (the o get_first counterexample_of) (fst (gen_quickcheck args i state));
fun quickcheck_cmd args i state =
gen_quickcheck args i (Toplevel.proof_of state)
|> apfst (Option.map (the o get_first response_of))
- |> (fn (r, state) => Output.urgent_message (Pretty.string_of
- (pretty_counterex (Proof.context_of state) false r)));
+ |> (fn (r, state) =>
+ Output.urgent_message (Pretty.string_of
+ (pretty_counterex (Proof.context_of state) false r)));
val parse_arg =
Parse.name --
@@ -507,6 +535,7 @@
(parse_args -- Scan.optional Parse.nat 1
>> (fn (args, i) => Toplevel.no_timing o Toplevel.keep (quickcheck_cmd args i)));
+
(* automatic testing *)
fun try_quickcheck auto state =
@@ -518,7 +547,7 @@
|> Proof.map_context (Config.put report false #> Config.put quiet true)
|> try (test_goal (false, false) ([], []) i);
in
- case res of
+ (case res of
NONE => (unknownN, state)
| SOME results =>
let
@@ -534,11 +563,11 @@
tap (fn _ => Output.urgent_message (Pretty.string_of msg))))
else
(noneN, state)
- end
+ end)
end
- |> `(fn (outcome_code, _) => outcome_code = genuineN)
+ |> `(fn (outcome_code, _) => outcome_code = genuineN);
-val setup = Try.register_tool (quickcheckN, (20, auto, try_quickcheck))
+val setup = Try.register_tool (quickcheckN, (20, auto, try_quickcheck));
end;