src/Pure/PIDE/protocol.ML
author wenzelm
Tue Jan 23 19:25:39 2018 +0100 (22 months ago)
changeset 67493 c4e9e0c50487
parent 67471 bddfa23a4ea9
child 68336 09ac56914b29
permissions -rw-r--r--
treat sessions as entities with defining position;
tuned signature;
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(*  Title:      Pure/PIDE/protocol.ML
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    Author:     Makarius
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Protocol message formats for interactive proof documents.
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*)
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structure Protocol: sig end =
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struct
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val _ =
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  Isabelle_Process.protocol_command "Prover.echo"
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    (fn args => List.app writeln args);
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val _ =
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  Isabelle_Process.protocol_command "Prover.options"
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    (fn [options_yxml] =>
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      (Options.set_default (Options.decode (YXML.parse_body options_yxml));
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       Isabelle_Process.init_options_interactive ()));
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val _ =
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  Isabelle_Process.protocol_command "Prover.init_session_base"
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    (fn [sessions_yxml, doc_names_yxml, global_theories_yxml, loaded_theories_yxml,
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          known_theories_yxml] =>
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      let
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        val decode_table = YXML.parse_body #> let open XML.Decode in list (pair string string) end;
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        val decode_list = YXML.parse_body #> let open XML.Decode in list string end;
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        val decode_sessions =
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          YXML.parse_body #> let open XML.Decode in list (pair string properties) end;
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      in
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        Resources.init_session_base
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          {sessions = decode_sessions sessions_yxml,
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           docs = decode_list doc_names_yxml,
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           global_theories = decode_table global_theories_yxml,
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           loaded_theories = decode_list loaded_theories_yxml,
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           known_theories = decode_table known_theories_yxml}
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      end);
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val _ =
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  Isabelle_Process.protocol_command "Document.define_blob"
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    (fn [digest, content] => Document.change_state (Document.define_blob digest content));
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val _ =
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  Isabelle_Process.protocol_command "Document.define_command"
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    (fn id :: name :: blobs_yxml :: toks_yxml :: sources =>
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      let
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        val (blobs, blobs_index) =
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          YXML.parse_body blobs_yxml |>
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            let
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              val message =
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                YXML.string_of_body o Protocol_Message.command_positions id;
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              open XML.Decode;
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            in
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              pair
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                (list (variant
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                 [fn ([], a) => Exn.Res (pair string (option string) a),
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                  fn ([], a) => Exn.Exn (ERROR (message a))]))
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                int
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            end;
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        val toks =
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          (YXML.parse_body toks_yxml |> let open XML.Decode in list (pair int int) end) ~~ sources;
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      in
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        Document.change_state
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          (Document.define_command (Document_ID.parse id) name blobs blobs_index toks)
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      end);
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val _ =
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  Isabelle_Process.protocol_command "Document.consolidate_execution"
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    (fn [] => Document.consolidate_execution (Document.state ()));
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val _ =
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  Isabelle_Process.protocol_command "Document.discontinue_execution"
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    (fn [] => Execution.discontinue ());
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val _ =
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  Isabelle_Process.protocol_command "Document.cancel_exec"
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    (fn [exec_id] => Execution.cancel (Document_ID.parse exec_id));
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val _ =
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  Isabelle_Process.protocol_command "Document.update"
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    (Future.task_context "Document.update" (Future.new_group NONE)
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      (fn [old_id_string, new_id_string, edits_yxml] => Document.change_state (fn state =>
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        let
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          val _ = Execution.discontinue ();
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          val old_id = Document_ID.parse old_id_string;
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          val new_id = Document_ID.parse new_id_string;
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          val edits =
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            YXML.parse_body edits_yxml |>
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              let open XML.Decode in
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                list (pair string
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                  (variant
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                   [fn ([], a) => Document.Edits (list (pair (option int) (option int)) a),
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                    fn ([], a) =>
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                      let
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                        val (master, (name, (imports, (keywords, errors)))) =
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                          pair string (pair string (pair (list string)
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                            (pair (list (pair string
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                              (pair (pair string (list string)) (list string))))
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                              (list YXML.string_of_body)))) a;
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                        val imports' = map (rpair Position.none) imports;
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                        val keywords' = map (fn (x, y) => ((x, Position.none), y)) keywords;
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                        val header = Thy_Header.make (name, Position.none) imports' keywords';
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                      in Document.Deps {master = master, header = header, errors = errors} end,
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                    fn (a :: b, c) =>
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                      Document.Perspective (bool_atom a, map int_atom b,
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                        list (pair int (pair string (list string))) c)]))
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              end;
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          val (removed, assign_update, state') = Document.update old_id new_id edits state;
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          val _ =
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            (singleton o Future.forks)
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             {name = "Document.update/remove", group = NONE,
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              deps = Execution.snapshot removed,
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              pri = Task_Queue.urgent_pri + 2, interrupts = false}
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             (fn () => (Execution.purge removed; List.app Isabelle_Process.reset_tracing removed));
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          val _ =
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            Output.protocol_message Markup.assign_update
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              [(new_id, assign_update) |>
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                let open XML.Encode
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                in pair int (list (pair int (list int))) end
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                |> YXML.string_of_body];
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        in Document.start_execution state' end)));
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val _ =
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  Isabelle_Process.protocol_command "Document.remove_versions"
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    (fn [versions_yxml] => Document.change_state (fn state =>
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      let
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        val versions =
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          YXML.parse_body versions_yxml |>
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            let open XML.Decode in list int end;
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        val state1 = Document.remove_versions versions state;
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        val _ = Output.protocol_message Markup.removed_versions [versions_yxml];
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      in state1 end));
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val _ =
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  Isabelle_Process.protocol_command "Document.dialog_result"
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    (fn [serial, result] =>
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      Active.dialog_result (Value.parse_int serial) result
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        handle exn => if Exn.is_interrupt exn then () (*sic!*) else Exn.reraise exn);
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val _ =
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  Isabelle_Process.protocol_command "ML_Heap.share_common_data"
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    (fn [] => ML_Heap.share_common_data ());
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end;
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