(* Title: HOL/Mirabelle/Tools/mirabelle.ML
Author: Jasmin Blanchette, TU Munich
Author: Sascha Boehme, TU Munich
Author: Makarius
Author: Martin Desharnais, UniBw Munich
*)
signature MIRABELLE =
sig
(*core*)
type action_context = {index: int, name: string, arguments: Properties.T, timeout: Time.time}
type command =
{theory_index: int, name: string, pos: Position.T, pre: Proof.state, post: Toplevel.state}
type action = {run_action: command -> string, finalize: unit -> string}
val register_action: string -> (action_context -> action) -> unit
(*utility functions*)
val print_exn: exn -> string
val can_apply : Time.time -> (Proof.context -> int -> tactic) ->
Proof.state -> bool
val theorems_in_proof_term : theory -> thm -> thm list
val theorems_of_sucessful_proof: Toplevel.state -> thm list
val get_argument : (string * string) list -> string * string -> string
val get_int_argument : (string * string) list -> string * int -> int
val get_bool_argument : (string * string) list -> string * bool -> bool
val cpu_time : ('a -> 'b) -> 'a -> 'b * int
end
structure Mirabelle : MIRABELLE =
struct
(** Mirabelle core **)
(* concrete syntax *)
val keywords = Keyword.no_command_keywords (Thy_Header.get_keywords \<^theory>);
fun read_actions str =
Token.read_body keywords
(Parse.enum ";" (Parse.name -- Sledgehammer_Commands.parse_params))
(Symbol_Pos.explode0 str);
(* actions *)
type command =
{theory_index: int, name: string, pos: Position.T, pre: Proof.state, post: Toplevel.state};
type action_context = {index: int, name: string, arguments: Properties.T, timeout: Time.time};
type action = {run_action: command -> string, finalize: unit -> string};
local
val actions = Synchronized.var "Mirabelle.actions"
(Symtab.empty : (action_context -> action) Symtab.table);
in
fun register_action name make_action =
(if name = "" then error "Registering unnamed Mirabelle action" else ();
Synchronized.change actions (Symtab.map_default (name, make_action)
(fn f => (warning ("Redefining Mirabelle action: " ^ quote name); f))));
fun get_action name = Symtab.lookup (Synchronized.value actions) name;
end
(* apply actions *)
fun print_exn exn =
(case exn of
Timeout.TIMEOUT _ => "timeout"
| ERROR msg => "error: " ^ msg
| exn => "exception: " ^ General.exnMessage exn);
fun run_action_function f =
f () handle exn =>
if Exn.is_interrupt exn then Exn.reraise exn
else print_exn exn;
fun make_action_path (context as {index, name, ...} : action_context) =
Path.basic (string_of_int index ^ "." ^ name);
fun finalize_action ({finalize, ...} : action) context =
let
val s = run_action_function finalize;
val action_path = make_action_path context;
val export_name =
Path.binding0 (Path.basic "mirabelle" + action_path + Path.basic "finalize");
in
if s <> "" then
Export.export \<^theory> export_name [XML.Text s]
else
()
end
fun apply_action ({run_action, ...} : action) context (command as {pos, pre, ...} : command) =
let
val thy = Proof.theory_of pre;
val action_path = make_action_path context;
val goal_name_path = Path.basic (#name command)
val line_path = Path.basic (string_of_int (the (Position.line_of pos)));
val offset_path = Path.basic (string_of_int (the (Position.offset_of pos)));
val export_name =
Path.binding0 (Path.basic "mirabelle" + action_path + Path.basic "goal" + goal_name_path +
line_path + offset_path);
val s = run_action_function (fn () => run_action command);
in
if s <> "" then
Export.export thy export_name [XML.Text s]
else
()
end;
(* theory line range *)
local
val theory_name =
Scan.many1 (Symbol_Pos.symbol #> (fn s => Symbol.not_eof s andalso s <> "["))
>> Symbol_Pos.content;
val line = Symbol_Pos.scan_nat >> (Symbol_Pos.content #> Value.parse_nat);
val end_line = Symbol_Pos.$$ ":" |-- line;
val range = Symbol_Pos.$$ "[" |-- line -- Scan.option end_line --| Symbol_Pos.$$ "]";
in
fun read_theory_range str =
(case Scan.read Symbol_Pos.stopper (theory_name -- Scan.option range) (Symbol_Pos.explode0 str) of
SOME res => res
| NONE => error ("Malformed specification of theory line range: " ^ quote str));
end;
fun check_theories strs =
let
fun theory_import_name s =
#theory_name (Resources.import_name (Session.get_name ()) Path.current s);
val theories = map read_theory_range strs
|> map (apfst theory_import_name);
fun get_theory name =
if null theories then SOME NONE
else get_first (fn (a, b) => if a = name then SOME b else NONE) theories;
fun check_line NONE _ = false
| check_line _ NONE = true
| check_line (SOME NONE) _ = true
| check_line (SOME (SOME (line, NONE))) (SOME i) = line <= i
| check_line (SOME (SOME (line, SOME end_line))) (SOME i) = line <= i andalso i <= end_line;
fun check_pos range = check_line range o Position.line_of;
in check_pos o get_theory end;
(* presentation hook *)
val whitelist = ["apply", "by", "proof"];
val _ =
Build.add_hook (fn qualifier => fn loaded_theories =>
let
val mirabelle_actions = Options.default_string \<^system_option>\<open>mirabelle_actions\<close>;
val actions =
(case read_actions mirabelle_actions of
SOME actions => actions
| NONE => error ("Failed to parse mirabelle_actions: " ^ quote mirabelle_actions));
in
if null actions then
()
else
let
val mirabelle_timeout = Options.default_seconds \<^system_option>\<open>mirabelle_timeout\<close>;
val mirabelle_stride = Options.default_int \<^system_option>\<open>mirabelle_stride\<close>;
val mirabelle_max_calls = Options.default_int \<^system_option>\<open>mirabelle_max_calls\<close>;
val mirabelle_theories = Options.default_string \<^system_option>\<open>mirabelle_theories\<close>;
val check_theory = check_theories (space_explode "," mirabelle_theories);
fun make_commands (thy_index, (thy, segments)) =
let
val thy_long_name = Context.theory_long_name thy;
val check_thy = check_theory thy_long_name;
fun make_command {command = tr, prev_state = st, state = st', ...} =
let
val name = Toplevel.name_of tr;
val pos = Toplevel.pos_of tr;
in
if Context.proper_subthy (\<^theory>, thy) andalso
can (Proof.assert_backward o Toplevel.proof_of) st andalso
member (op =) whitelist name andalso check_thy pos
then SOME {theory_index = thy_index, name = name, pos = pos,
pre = Toplevel.proof_of st, post = st'}
else NONE
end;
in
if Resources.theory_qualifier thy_long_name = qualifier then
map_filter make_command segments
else
[]
end;
(* initialize actions *)
val contexts = actions |> map_index (fn (n, (name, args)) =>
let
val make_action = the (get_action name);
val context = {index = n, name = name, arguments = args, timeout = mirabelle_timeout};
in
(make_action context, context)
end);
in
(* run actions on all relevant goals *)
loaded_theories
|> map_index I
|> maps make_commands
|> map_index I
|> maps (fn (n, command) =>
let val (m, k) = Integer.div_mod (n + 1) mirabelle_stride in
if k = 0 andalso (mirabelle_max_calls <= 0 orelse m <= mirabelle_max_calls) then
map (fn context => (context, command)) contexts
else
[]
end)
|> Par_List.map (fn ((action, context), command) => apply_action action context command);
(* finalize actions *)
List.app (uncurry finalize_action) contexts
end
end);
(* Mirabelle utility functions *)
fun can_apply time tac st =
let
val {context = ctxt, facts, goal} = Proof.goal st;
val full_tac = HEADGOAL (Method.insert_tac ctxt facts THEN' tac ctxt);
in
(case try (Timeout.apply time (Seq.pull o full_tac)) goal of
SOME (SOME _) => true
| _ => false)
end;
local
fun fold_body_thms f =
let
fun app n (PBody {thms, ...}) = thms |> fold (fn (i, thm_node) =>
fn (x, seen) =>
if Inttab.defined seen i then (x, seen)
else
let
val name = Proofterm.thm_node_name thm_node;
val prop = Proofterm.thm_node_prop thm_node;
val body = Future.join (Proofterm.thm_node_body thm_node);
val (x', seen') =
app (n + (if name = "" then 0 else 1)) body
(x, Inttab.update (i, ()) seen);
in (x' |> n = 0 ? f (name, prop, body), seen') end);
in fn bodies => fn x => #1 (fold (app 0) bodies (x, Inttab.empty)) end;
in
fun theorems_in_proof_term thy thm =
let
val all_thms = Global_Theory.all_thms_of thy true;
fun collect (s, _, _) = if s <> "" then insert (op =) s else I;
fun member_of xs (x, y) = if member (op =) xs x then SOME y else NONE;
fun resolve_thms names = map_filter (member_of names) all_thms;
in resolve_thms (fold_body_thms collect [Thm.proof_body_of thm] []) end;
end;
fun theorems_of_sucessful_proof st =
(case try Toplevel.proof_of st of
NONE => []
| SOME prf => theorems_in_proof_term (Proof.theory_of prf) (#goal (Proof.goal prf)));
fun get_argument arguments (key, default) =
the_default default (AList.lookup (op =) arguments key);
fun get_int_argument arguments (key, default) =
(case Option.map Int.fromString (AList.lookup (op =) arguments key) of
SOME (SOME i) => i
| SOME NONE => error ("bad option: " ^ key)
| NONE => default);
fun get_bool_argument arguments (key, default) =
(case Option.map Bool.fromString (AList.lookup (op =) arguments key) of
SOME (SOME i) => i
| SOME NONE => error ("bad option: " ^ key)
| NONE => default);
fun cpu_time f x =
let val ({cpu, ...}, y) = Timing.timing f x
in (y, Time.toMilliseconds cpu) end;
end