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_result: 'a memo -> 'a
17 val read: span -> Toplevel.transition
18 val eval: span -> Toplevel.transition ->
19 Toplevel.state * {malformed: bool} -> {failed: bool} * (Toplevel.state * {malformed: bool})
20 val no_print: unit lazy
21 val print: Toplevel.transition -> Toplevel.state -> unit lazy
24 structure Command: COMMAND =
29 type span = Token.T list;
31 val range = Token.position_range_of;
32 val proper_range = Token.position_range_of o #1 o take_suffix Token.is_improper;
39 Result of 'a Exn.result;
41 abstype 'a memo = Memo of 'a expr Synchronized.var
44 fun memo e = Memo (Synchronized.var "Command.memo" (Expr e));
45 fun memo_value a = Memo (Synchronized.var "Command.memo" (Result (Exn.Res a)));
47 fun memo_eval (Memo v) =
48 (case Synchronized.value v of
51 Synchronized.guarded_access v
52 (fn Result res => SOME (res, Result res)
54 let val res = Exn.capture e (); (*memoing of physical interrupts!*)
55 in SOME (res, Result res) end))
58 fun memo_result (Memo v) =
59 (case Synchronized.value v of
60 Result res => Exn.release res
61 | _ => raise Fail "Unfinished memo result");
70 val outer_syntax = #2 (Outer_Syntax.get_syntax ());
71 val command_reports = Outer_Syntax.command_reports outer_syntax;
73 val proper_range = Position.set_range (proper_range span);
75 (case find_first Token.is_command span of
76 SOME tok => Token.position_of tok
77 | NONE => proper_range);
79 val (is_malformed, token_reports) = Thy_Syntax.reports_of_tokens span;
80 val _ = Position.reports_text (token_reports @ maps command_reports span);
82 if is_malformed then Toplevel.malformed pos "Malformed command syntax"
84 (case Outer_Syntax.read_spans outer_syntax span of
86 if Keyword.is_control (Toplevel.name_of tr) then
87 Toplevel.malformed pos "Illegal control command"
89 | [] => Toplevel.ignored (Position.set_range (range span))
90 | _ => Toplevel.malformed proper_range "Exactly one command expected")
91 handle ERROR msg => Toplevel.malformed proper_range msg
100 if Goal.future_enabled () andalso Keyword.is_diag (Toplevel.name_of tr) then
101 (Goal.fork_params {name = "Toplevel.diag", pos = Toplevel.pos_of tr, pri = ~1}
102 (fn () => Toplevel.command_exception int tr st); ([], SOME st))
103 else Toplevel.command_errors int tr st;
105 fun check_cmts span tr st' =
106 Toplevel.setmp_thread_position tr
108 Outer_Syntax.side_comments span |> maps (fn cmt =>
109 (Thy_Output.check_text (Token.source_position_of cmt) st'; [])
110 handle exn => ML_Compiler.exn_messages_ids exn)) ();
112 fun proof_status tr st =
113 (case try Toplevel.proof_of st of
114 SOME prf => Toplevel.status tr (Proof.status_markup prf)
119 fun eval span tr (st, {malformed}) =
121 ({failed = true}, (Toplevel.toplevel, {malformed = malformed}))
124 val malformed' = Toplevel.is_malformed tr;
125 val is_init = Toplevel.is_init tr;
126 val is_proof = Keyword.is_proof (Toplevel.name_of tr);
128 val _ = Multithreading.interrupted ();
129 val _ = Toplevel.status tr Markup.running;
130 val (errs1, result) = run (is_init orelse is_proof) (Toplevel.set_print false tr) st;
131 val errs2 = (case result of NONE => [] | SOME st' => check_cmts span tr st');
132 val errs = errs1 @ errs2;
133 val _ = Toplevel.status tr Markup.finished;
134 val _ = List.app (Future.error_msg (Toplevel.pos_of tr)) errs;
139 val _ = if null errs then Exn.interrupt () else ();
140 val _ = Toplevel.status tr Markup.failed;
141 in ({failed = true}, (st, {malformed = malformed'})) end
144 val _ = proof_status tr st';
145 in ({failed = false}, (st', {malformed = malformed'})) end)
153 val no_print = Lazy.value ();
157 val is_init = Toplevel.is_init tr;
158 val is_proof = Keyword.is_proof (Toplevel.name_of tr);
161 (Toplevel.print_of tr orelse (is_proof andalso Toplevel.is_proof st'));
164 (Lazy.lazy o Toplevel.setmp_thread_position tr)
165 (fn () => Toplevel.print_state false st')