separate exec_id assignment for Command.print states, without affecting result of eval;
tuned signature;
tuned;
1 (* Title: Pure/PIDE/command.ML
4 Prover command execution.
9 type span = Token.T list
10 val range: span -> Position.range
11 val proper_range: span -> Position.range
13 val memo: (unit -> 'a) -> 'a memo
14 val memo_value: 'a -> 'a memo
15 val memo_eval: 'a memo -> 'a
16 val memo_fork: Future.params -> 'a memo -> unit
17 val memo_result: 'a memo -> 'a
18 val memo_stable: 'a memo -> bool
19 val read: span -> Toplevel.transition
21 {failed: bool, malformed: bool, command: Toplevel.transition, state: Toplevel.state}
22 type eval = eval_state memo
24 val eval: span -> Toplevel.transition -> eval_state -> eval_state
25 type print_fn = Toplevel.transition -> Toplevel.state -> unit
26 type print = {name: string, pri: int, exec_id: int, print: unit memo}
27 val print: (unit -> int) -> string -> eval -> print list
28 val print_function: {name: string, pri: int} -> (string -> print_fn option) -> unit
31 structure Command: COMMAND =
36 type span = Token.T list;
38 val range = Token.position_range_of;
39 val proper_range = Token.position_range_of o #1 o take_suffix Token.is_improper;
46 Result of 'a Exn.result;
48 abstype 'a memo = Memo of 'a expr Synchronized.var
51 fun memo e = Memo (Synchronized.var "Command.memo" (Expr e));
52 fun memo_value a = Memo (Synchronized.var "Command.memo" (Result (Exn.Res a)));
54 fun memo_eval (Memo v) =
55 (case Synchronized.value v of
58 Synchronized.guarded_access v
59 (fn Result res => SOME (res, Result res)
61 let val res = Exn.capture e (); (*memoing of physical interrupts!*)
62 in SOME (res, Result res) end))
65 fun memo_fork params (Memo v) =
66 (case Synchronized.value v of
68 | _ => ignore ((singleton o Future.forks) params (fn () => memo_eval (Memo v))));
70 fun memo_result (Memo v) =
71 (case Synchronized.value v of
72 Result res => Exn.release res
73 | _ => raise Fail "Unfinished memo result");
75 fun memo_stable (Memo v) =
76 (case Synchronized.value v of
78 | Result res => not (Exn.is_interrupt_exn res));
87 val outer_syntax = #2 (Outer_Syntax.get_syntax ());
88 val command_reports = Outer_Syntax.command_reports outer_syntax;
90 val proper_range = Position.set_range (proper_range span);
92 (case find_first Token.is_command span of
93 SOME tok => Token.position_of tok
94 | NONE => proper_range);
96 val (is_malformed, token_reports) = Thy_Syntax.reports_of_tokens span;
97 val _ = Position.reports_text (token_reports @ maps command_reports span);
99 if is_malformed then Toplevel.malformed pos "Malformed command syntax"
101 (case Outer_Syntax.read_spans outer_syntax span of
103 if Keyword.is_control (Toplevel.name_of tr) then
104 Toplevel.malformed pos "Illegal control command"
106 | [] => Toplevel.ignored (Position.set_range (range span))
107 | _ => Toplevel.malformed proper_range "Exactly one command expected")
108 handle ERROR msg => Toplevel.malformed proper_range msg
115 {failed: bool, malformed: bool, command: Toplevel.transition, state: Toplevel.state};
116 val no_eval_state: eval_state =
117 {failed = false, malformed = false, command = Toplevel.empty, state = Toplevel.toplevel};
119 type eval = eval_state memo;
120 val no_eval = memo_value no_eval_state;
125 if Goal.future_enabled () andalso Keyword.is_diag (Toplevel.name_of tr) then
126 (Goal.fork_params {name = "Toplevel.diag", pos = Toplevel.pos_of tr, pri = ~1}
127 (fn () => Toplevel.command_exception int tr st); ([], SOME st))
128 else Toplevel.command_errors int tr st;
130 fun check_cmts span tr st' =
131 Toplevel.setmp_thread_position tr
133 Outer_Syntax.side_comments span |> maps (fn cmt =>
134 (Thy_Output.check_text (Token.source_position_of cmt) st'; [])
135 handle exn => ML_Compiler.exn_messages_ids exn)) ();
137 fun proof_status tr st =
138 (case try Toplevel.proof_of st of
139 SOME prf => Toplevel.status tr (Proof.status_markup prf)
144 fun eval span tr ({malformed, state = st, ...}: eval_state) =
146 {failed = true, malformed = malformed, command = tr, state = Toplevel.toplevel}
149 val malformed' = Toplevel.is_malformed tr;
150 val is_init = Toplevel.is_init tr;
151 val is_proof = Keyword.is_proof (Toplevel.name_of tr);
153 val _ = Multithreading.interrupted ();
154 val _ = Toplevel.status tr Markup.running;
155 val (errs1, result) = run (is_init orelse is_proof) (Toplevel.set_print false tr) st;
156 val errs2 = (case result of NONE => [] | SOME st' => check_cmts span tr st');
157 val errs = errs1 @ errs2;
158 val _ = Toplevel.status tr Markup.finished;
159 val _ = List.app (Future.error_msg (Toplevel.pos_of tr)) errs;
164 val _ = if null errs then Exn.interrupt () else ();
165 val _ = Toplevel.status tr Markup.failed;
166 in {failed = true, malformed = malformed', command = tr, state = st} end
169 val _ = proof_status tr st';
170 in {failed = false, malformed = malformed', command = tr, state = st'} end)
178 type print = {name: string, pri: int, exec_id: int, print: unit memo};
179 type print_fn = Toplevel.transition -> Toplevel.state -> unit;
183 type print_function = string * (int * (string -> print_fn option));
184 val print_functions = Synchronized.var "Command.print_functions" ([]: print_function list);
186 fun output_error tr exn =
187 List.app (Future.error_msg (Toplevel.pos_of tr)) (ML_Compiler.exn_messages_ids exn);
189 fun print_error tr f x =
190 (Toplevel.setmp_thread_position tr o Runtime.controlled_execution) f x
191 handle exn => output_error tr exn;
195 fun print new_id command_name eval =
196 rev (Synchronized.value print_functions) |> map_filter (fn (name, (pri, get_print_fn)) =>
197 (case Exn.capture (Runtime.controlled_execution get_print_fn) command_name of
199 | Exn.Res (SOME print_fn) =>
201 val exec_id = new_id ();
204 val {failed, command, state = st', ...} = memo_result eval;
205 val tr = Toplevel.put_id exec_id command;
206 in if failed then () else print_error tr (fn () => print_fn tr st') () end;
207 in SOME {name = name, pri = pri, exec_id = exec_id, print = memo body} end
210 val exec_id = new_id ();
213 val {command, ...} = memo_result eval;
214 val tr = Toplevel.put_id exec_id command;
215 in output_error tr exn end;
216 in SOME {name = name, pri = pri, exec_id = exec_id, print = memo body} end));
218 fun print_function {name, pri} f =
219 Synchronized.change print_functions (fn funs =>
220 (if not (AList.defined (op =) funs name) then ()
221 else warning ("Redefining command print function: " ^ quote name);
222 AList.update (op =) (name, (pri, f)) funs));
227 print_function {name = "print_state", pri = 0} (fn command_name => SOME (fn tr => fn st' =>
229 val is_init = Keyword.is_theory_begin command_name;
230 val is_proof = Keyword.is_proof command_name;
233 (Toplevel.print_of tr orelse (is_proof andalso Toplevel.is_proof st'));
234 in if do_print then Toplevel.print_state false st' else () end));