src/Pure/PIDE/document.ML
author wenzelm
Sat Sep 01 17:16:36 2018 +0200 (9 months ago ago)
changeset 68869 3739acbc2178
parent 68866 d4681a748873
child 70006 1bea05713dde
permissions -rw-r--r--
clarified message;
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(*  Title:      Pure/PIDE/document.ML
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    Author:     Makarius
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Document as collection of named nodes, each consisting of an editable
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list of commands, associated with asynchronous execution process.
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*)
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signature DOCUMENT =
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sig
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  val timing: bool Unsynchronized.ref
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  type node_header = {master: string, header: Thy_Header.header, errors: string list}
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  type overlay = Document_ID.command * (string * string list)
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  datatype node_edit =
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    Edits of (Document_ID.command option * Document_ID.command option) list |
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    Deps of node_header |
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    Perspective of bool * Document_ID.command list * overlay list
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  type edit = string * node_edit
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  type state
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  val init_state: state
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  val define_blob: string -> string -> state -> state
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  type blob_digest = (string * string option) Exn.result
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  val define_command: Document_ID.command -> string -> blob_digest list -> int ->
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    ((int * int) * string) list -> state -> state
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  val command_exec: state -> string -> Document_ID.command -> Command.exec option
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  val remove_versions: Document_ID.version list -> state -> state
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  val start_execution: state -> state
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  val update: Document_ID.version -> Document_ID.version -> edit list -> string list -> state ->
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    Document_ID.exec list * (Document_ID.command * Document_ID.exec list) list * state
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  val state: unit -> state
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  val change_state: (state -> state) -> unit
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end;
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structure Document: DOCUMENT =
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struct
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val timing = Unsynchronized.ref false;
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fun timeit msg e = cond_timeit (! timing) msg e;
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(** document structure **)
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fun err_dup kind id = error ("Duplicate " ^ kind ^ ": " ^ Document_ID.print id);
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fun err_undef kind id = error ("Undefined " ^ kind ^ ": " ^ Document_ID.print id);
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type node_header =
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  {master: string, header: Thy_Header.header, errors: string list};
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type perspective =
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 {required: bool,  (*required node*)
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  visible: Inttab.set,  (*visible commands*)
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  visible_last: Document_ID.command option,  (*last visible command*)
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  overlays: (string * string list) list Inttab.table};  (*command id -> print functions with args*)
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structure Entries = Linear_Set(type key = Document_ID.command val ord = int_ord);
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abstype node = Node of
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 {header: node_header,  (*master directory, theory header, errors*)
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  keywords: Keyword.keywords option,  (*outer syntax keywords*)
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  perspective: perspective,  (*command perspective*)
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  entries: Command.exec option Entries.T,  (*command entries with executions*)
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  result: (Document_ID.command * Command.eval) option,  (*result of last execution*)
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  consolidated: unit lazy}  (*consolidated status of eval forks*)
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and version = Version of node String_Graph.T  (*development graph wrt. static imports*)
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with
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fun make_node (header, keywords, perspective, entries, result, consolidated) =
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  Node {header = header, keywords = keywords, perspective = perspective,
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    entries = entries, result = result, consolidated = consolidated};
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fun map_node f (Node {header, keywords, perspective, entries, result, consolidated}) =
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  make_node (f (header, keywords, perspective, entries, result, consolidated));
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fun make_perspective (required, command_ids, overlays) : perspective =
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 {required = required,
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  visible = Inttab.make_set command_ids,
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  visible_last = try List.last command_ids,
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  overlays = Inttab.make_list overlays};
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val no_header: node_header =
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  {master = "", header = Thy_Header.make ("", Position.none) [] [], errors = []};
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val no_perspective = make_perspective (false, [], []);
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val empty_node =
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  make_node (no_header, NONE, no_perspective, Entries.empty, NONE, Lazy.value ());
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fun is_no_perspective ({required, visible, visible_last, overlays}: perspective) =
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  not required andalso
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  Inttab.is_empty visible andalso
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  is_none visible_last andalso
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  Inttab.is_empty overlays;
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fun is_empty_node (Node {header, keywords, perspective, entries, result, consolidated}) =
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  header = no_header andalso
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  is_none keywords andalso
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  is_no_perspective perspective andalso
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  Entries.is_empty entries andalso
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  is_none result andalso
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  Lazy.is_finished consolidated;
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(* basic components *)
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fun master_directory (Node {header = {master, ...}, ...}) =
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  (case try Url.explode master of
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    SOME (Url.File path) => path
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  | _ => Path.current);
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fun set_header master header errors =
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  map_node (fn (_, keywords, perspective, entries, result, consolidated) =>
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    ({master = master, header = header, errors = errors},
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      keywords, perspective, entries, result, consolidated));
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fun get_header (Node {header, ...}) = header;
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fun set_keywords keywords =
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  map_node (fn (header, _, perspective, entries, result, consolidated) =>
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    (header, keywords, perspective, entries, result, consolidated));
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fun get_keywords (Node {keywords, ...}) = keywords;
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fun read_header node span =
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  let
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    val {header, errors, ...} = get_header node;
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    val _ =
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      if null errors then ()
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      else
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        cat_lines errors |>
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        (case Position.get_id (Position.thread_data ()) of
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          NONE => I
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        | SOME id => Protocol_Message.command_positions_yxml id)
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        |> error;
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    val {name = (name, _), imports, ...} = header;
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    val {name = (_, pos), imports = imports', keywords} =
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      Thy_Header.read_tokens Position.none span;
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    val imports'' = (map #1 imports ~~ map #2 imports') handle ListPair.UnequalLengths => imports;
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  in Thy_Header.make (name, pos) imports'' keywords end;
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fun get_perspective (Node {perspective, ...}) = perspective;
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fun set_perspective args =
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  map_node (fn (header, keywords, _, entries, result, consolidated) =>
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    (header, keywords, make_perspective args, entries, result, consolidated));
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val required_node = #required o get_perspective;
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val visible_command = Inttab.defined o #visible o get_perspective;
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val visible_last = #visible_last o get_perspective;
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val visible_node = is_some o visible_last
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val overlays = Inttab.lookup_list o #overlays o get_perspective;
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fun map_entries f =
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  map_node (fn (header, keywords, perspective, entries, result, consolidated) =>
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    (header, keywords, perspective, f entries, result, consolidated));
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fun get_entries (Node {entries, ...}) = entries;
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fun iterate_entries f = Entries.iterate NONE f o get_entries;
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fun iterate_entries_after start f (Node {entries, ...}) =
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  (case Entries.get_after entries start of
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    NONE => I
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  | SOME id => Entries.iterate (SOME id) f entries);
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fun get_result (Node {result, ...}) = result;
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fun set_result result =
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  map_node (fn (header, keywords, perspective, entries, _, consolidated) =>
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    (header, keywords, perspective, entries, result, consolidated));
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fun pending_result node =
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  (case get_result node of
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    SOME (_, eval) => not (Command.eval_finished eval)
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  | NONE => false);
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fun finished_result node =
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  (case get_result node of
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    SOME (_, eval) => Command.eval_finished eval
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  | NONE => false);
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fun finished_result_theory node =
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  if finished_result node then
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    let
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      val (result_id, eval) = the (get_result node);
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      val st = Command.eval_result_state eval;
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    in SOME (result_id, Toplevel.end_theory Position.none st) handle ERROR _ => NONE end
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  else NONE;
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val reset_consolidated =
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  map_node (fn (header, keywords, perspective, entries, result, _) =>
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    (header, keywords, perspective, entries, result, Lazy.lazy I));
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fun get_consolidated (Node {consolidated, ...}) = consolidated;
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val is_consolidated = Lazy.is_finished o get_consolidated;
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fun commit_consolidated node =
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  (Lazy.force (get_consolidated node); Output.status (Markup.markup_only Markup.consolidated));
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fun could_consolidate node =
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  not (is_consolidated node) andalso is_some (finished_result_theory node);
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fun get_node nodes name = String_Graph.get_node nodes name
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  handle String_Graph.UNDEF _ => empty_node;
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fun default_node name = String_Graph.default_node (name, empty_node);
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fun update_node name f = default_node name #> String_Graph.map_node name f;
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(* node edits and associated executions *)
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type overlay = Document_ID.command * (string * string list);
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datatype node_edit =
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  Edits of (Document_ID.command option * Document_ID.command option) list |
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  Deps of node_header |
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  Perspective of bool * Document_ID.command list * overlay list;
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type edit = string * node_edit;
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val after_entry = Entries.get_after o get_entries;
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fun lookup_entry node id =
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  (case Entries.lookup (get_entries node) id of
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    NONE => NONE
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  | SOME (exec, _) => exec);
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fun the_entry node id =
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  (case Entries.lookup (get_entries node) id of
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    NONE => err_undef "command entry" id
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  | SOME (exec, _) => exec);
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fun assign_entry (command_id, exec) node =
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  if is_none (Entries.lookup (get_entries node) command_id) then node
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  else map_entries (Entries.update (command_id, exec)) node;
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fun reset_after id entries =
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  (case Entries.get_after entries id of
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    NONE => entries
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  | SOME next => Entries.update (next, NONE) entries);
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val edit_node = map_entries o fold
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  (fn (id, SOME id2) => Entries.insert_after id (id2, NONE)
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    | (id, NONE) => Entries.delete_after id #> reset_after id);
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(* version operations *)
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val empty_version = Version String_Graph.empty;
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fun nodes_of (Version nodes) = nodes;
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val node_of = get_node o nodes_of;
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fun cycle_msg names = "Cyclic dependency of " ^ space_implode " via " (map quote names);
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fun edit_nodes (name, node_edit) (Version nodes) =
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  Version
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    (case node_edit of
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      Edits edits => update_node name (edit_node edits) nodes
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    | Deps {master, header, errors} =>
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        let
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          val imports = map fst (#imports header);
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          val nodes1 = nodes
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            |> default_node name
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            |> fold default_node imports;
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          val nodes2 = nodes1
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            |> String_Graph.Keys.fold
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                (fn dep => String_Graph.del_edge (dep, name)) (String_Graph.imm_preds nodes1 name);
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          val (nodes3, errors1) =
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            (String_Graph.add_deps_acyclic (name, imports) nodes2, errors)
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              handle String_Graph.CYCLES cs => (nodes2, errors @ map cycle_msg cs);
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        in String_Graph.map_node name (set_header master header errors1) nodes3 end
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    | Perspective perspective => update_node name (set_perspective perspective) nodes);
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fun update_keywords name nodes =
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  nodes |> String_Graph.map_node name (fn node =>
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    if is_empty_node node then node
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    else
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      let
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        val {master, header, errors} = get_header node;
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        val imports_keywords = map_filter (get_keywords o get_node nodes o #1) (#imports header);
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        val keywords =
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          Library.foldl Keyword.merge_keywords (Session.get_keywords (), imports_keywords);
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        val (keywords', errors') =
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          (Keyword.add_keywords (#keywords header) keywords, errors)
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            handle ERROR msg =>
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              (keywords, if member (op =) errors msg then errors else errors @ [msg]);
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      in
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        node
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        |> set_header master header errors'
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        |> set_keywords (SOME keywords')
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      end);
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fun edit_keywords edits (Version nodes) =
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  Version
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    (fold update_keywords
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      (String_Graph.all_succs nodes (map_filter (fn (a, Deps _) => SOME a | _ => NONE) edits))
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      nodes);
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fun put_node (name, node) (Version nodes) =
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  let
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    val nodes1 = update_node name (K node) nodes;
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    val nodes2 =
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      if String_Graph.is_maximal nodes1 name andalso is_empty_node node
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      then String_Graph.del_node name nodes1
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      else nodes1;
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  in Version nodes2 end;
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end;
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(** main state -- document structure and execution process **)
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type blob_digest = (string * string option) Exn.result;  (*file node name, raw digest*)
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type execution =
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 {version_id: Document_ID.version,  (*static version id*)
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  execution_id: Document_ID.execution,  (*dynamic execution id*)
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  delay_request: unit future,  (*pending event timer request*)
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  parallel_prints: Command.exec list};  (*parallel prints for early execution*)
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val no_execution: execution =
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  {version_id = Document_ID.none,
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   execution_id = Document_ID.none,
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   delay_request = Future.value (),
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   parallel_prints = []};
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fun new_execution version_id delay_request parallel_prints : execution =
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  {version_id = version_id,
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   execution_id = Execution.start (),
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   delay_request = delay_request,
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   parallel_prints = parallel_prints};
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abstype state = State of
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 {versions: version Inttab.table,  (*version id -> document content*)
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  blobs: (SHA1.digest * string list) Symtab.table,  (*raw digest -> digest, lines*)
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  commands: (string * blob_digest list * int * Token.T list lazy) Inttab.table,
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    (*command id -> name, inlined files, token index of files, command span*)
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  execution: execution}  (*current execution process*)
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with
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fun make_state (versions, blobs, commands, execution) =
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  State {versions = versions, blobs = blobs, commands = commands, execution = execution};
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fun map_state f (State {versions, blobs, commands, execution}) =
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  make_state (f (versions, blobs, commands, execution));
wenzelm@38418
   345
wenzelm@38418
   346
val init_state =
wenzelm@54519
   347
  make_state (Inttab.make [(Document_ID.none, empty_version)],
wenzelm@54519
   348
    Symtab.empty, Inttab.empty, no_execution);
wenzelm@38418
   349
wenzelm@38418
   350
wenzelm@38418
   351
(* document versions *)
wenzelm@38418
   352
wenzelm@68367
   353
fun parallel_prints_node node =
wenzelm@68367
   354
  iterate_entries (fn (_, opt_exec) => fn rev_result =>
wenzelm@68367
   355
    (case opt_exec of
wenzelm@68367
   356
      SOME (eval, prints) =>
wenzelm@68367
   357
        (case filter Command.parallel_print prints of
wenzelm@68367
   358
          [] => SOME rev_result
wenzelm@68367
   359
        | prints' => SOME ((eval, prints') :: rev_result))
wenzelm@68367
   360
    | NONE => NONE)) node [] |> rev;
wenzelm@68367
   361
wenzelm@68367
   362
fun define_version version_id version assigned_nodes =
wenzelm@59193
   363
  map_state (fn (versions, blobs, commands, {delay_request, ...}) =>
wenzelm@47420
   364
    let
wenzelm@68367
   365
      val version' = fold put_node assigned_nodes version;
wenzelm@68367
   366
      val versions' = Inttab.update_new (version_id, version') versions
wenzelm@47420
   367
        handle Inttab.DUP dup => err_dup "document version" dup;
wenzelm@68367
   368
      val parallel_prints = maps (parallel_prints_node o #2) assigned_nodes;
wenzelm@68367
   369
      val execution' = new_execution version_id delay_request parallel_prints;
wenzelm@54519
   370
    in (versions', blobs, commands, execution') end);
wenzelm@38418
   371
wenzelm@52536
   372
fun the_version (State {versions, ...}) version_id =
wenzelm@52536
   373
  (case Inttab.lookup versions version_id of
wenzelm@52536
   374
    NONE => err_undef "document version" version_id
wenzelm@38418
   375
  | SOME version => version);
wenzelm@38418
   376
wenzelm@52536
   377
fun delete_version version_id versions =
wenzelm@52536
   378
  Inttab.delete version_id versions
wenzelm@52536
   379
    handle Inttab.UNDEF _ => err_undef "document version" version_id;
wenzelm@44673
   380
wenzelm@38418
   381
wenzelm@54519
   382
(* inlined files *)
wenzelm@54519
   383
wenzelm@54519
   384
fun define_blob digest text =
wenzelm@54519
   385
  map_state (fn (versions, blobs, commands, execution) =>
wenzelm@57638
   386
    let val blobs' = Symtab.update (digest, (SHA1.fake digest, split_lines text)) blobs
wenzelm@54519
   387
    in (versions, blobs', commands, execution) end);
wenzelm@54519
   388
wenzelm@54519
   389
fun the_blob (State {blobs, ...}) digest =
wenzelm@54519
   390
  (case Symtab.lookup blobs digest of
wenzelm@54519
   391
    NONE => error ("Undefined blob: " ^ digest)
wenzelm@55788
   392
  | SOME content => content);
wenzelm@54519
   393
wenzelm@56447
   394
fun resolve_blob state (blob_digest: blob_digest) =
wenzelm@61077
   395
  blob_digest |> Exn.map_res (fn (file_node, raw_digest) =>
wenzelm@56458
   396
    (file_node, Option.map (the_blob state) raw_digest));
wenzelm@56447
   397
wenzelm@59685
   398
fun blob_reports pos (blob_digest: blob_digest) =
wenzelm@59685
   399
  (case blob_digest of Exn.Res (file_node, _) => [(pos, Markup.path file_node)] | _ => []);
wenzelm@59685
   400
wenzelm@54519
   401
wenzelm@38418
   402
(* commands *)
wenzelm@38418
   403
wenzelm@59704
   404
fun define_command command_id name blobs_digests blobs_index toks =
wenzelm@54519
   405
  map_state (fn (versions, blobs, commands, execution) =>
wenzelm@38418
   406
    let
wenzelm@52536
   407
      val id = Document_ID.print command_id;
wenzelm@52536
   408
      val span =
wenzelm@66168
   409
        Lazy.lazy_name "Document.define_command" (fn () =>
wenzelm@52536
   410
          Position.setmp_thread_data (Position.id_only id)
wenzelm@59685
   411
            (fn () =>
wenzelm@59685
   412
              let
wenzelm@59685
   413
                val (tokens, _) = fold_map Token.make toks (Position.id id);
wenzelm@59685
   414
                val _ =
wenzelm@59704
   415
                  if blobs_index < 0
wenzelm@59704
   416
                  then (*inlined errors*)
wenzelm@59704
   417
                    map_filter Exn.get_exn blobs_digests
wenzelm@59704
   418
                    |> List.app (Output.error_message o Runtime.exn_message)
wenzelm@59704
   419
                  else (*auxiliary files*)
wenzelm@60034
   420
                    let val pos = Token.pos_of (nth tokens blobs_index)
wenzelm@60034
   421
                    in Position.reports (maps (blob_reports pos) blobs_digests) end;
wenzelm@59685
   422
              in tokens end) ());
wenzelm@59685
   423
      val commands' =
wenzelm@59704
   424
        Inttab.update_new (command_id, (name, blobs_digests, blobs_index, span)) commands
wenzelm@59685
   425
          handle Inttab.DUP dup => err_dup "command" dup;
wenzelm@47395
   426
      val _ =
wenzelm@52536
   427
        Position.setmp_thread_data (Position.id_only id)
wenzelm@50201
   428
          (fn () => Output.status (Markup.markup_only Markup.accepted)) ();
wenzelm@54519
   429
    in (versions, blobs, commands', execution) end);
wenzelm@38418
   430
wenzelm@52536
   431
fun the_command (State {commands, ...}) command_id =
wenzelm@52536
   432
  (case Inttab.lookup commands command_id of
wenzelm@52536
   433
    NONE => err_undef "command" command_id
wenzelm@44644
   434
  | SOME command => command);
wenzelm@38418
   435
wenzelm@52569
   436
val the_command_name = #1 oo the_command;
wenzelm@52569
   437
wenzelm@66382
   438
wenzelm@66382
   439
(* execution *)
wenzelm@66382
   440
wenzelm@66382
   441
fun get_execution (State {execution, ...}) = execution;
wenzelm@66382
   442
fun get_execution_version state = the_version state (#version_id (get_execution state));
wenzelm@66382
   443
wenzelm@60880
   444
fun command_exec state node_name command_id =
wenzelm@60880
   445
  let
wenzelm@66382
   446
    val version = get_execution_version state;
wenzelm@66382
   447
    val node = get_node (nodes_of version) node_name;
wenzelm@60880
   448
  in the_entry node command_id end;
wenzelm@60880
   449
wenzelm@47420
   450
end;
wenzelm@38418
   451
wenzelm@52566
   452
wenzelm@52566
   453
(* remove_versions *)
wenzelm@52566
   454
wenzelm@54519
   455
fun remove_versions version_ids state = state |> map_state (fn (versions, _, _, execution) =>
wenzelm@47420
   456
  let
wenzelm@52536
   457
    val _ =
wenzelm@52536
   458
      member (op =) version_ids (#version_id execution) andalso
wenzelm@52536
   459
        error ("Attempt to remove execution version " ^ Document_ID.print (#version_id execution));
wenzelm@47343
   460
wenzelm@52536
   461
    val versions' = fold delete_version version_ids versions;
wenzelm@47420
   462
    val commands' =
wenzelm@47420
   463
      (versions', Inttab.empty) |->
wenzelm@47420
   464
        Inttab.fold (fn (_, version) => nodes_of version |>
wenzelm@50862
   465
          String_Graph.fold (fn (_, (node, _)) => node |>
wenzelm@52536
   466
            iterate_entries (fn ((_, command_id), _) =>
wenzelm@52536
   467
              SOME o Inttab.insert (K true) (command_id, the_command state command_id))));
wenzelm@54519
   468
    val blobs' =
wenzelm@54519
   469
      (commands', Symtab.empty) |->
wenzelm@59689
   470
        Inttab.fold (fn (_, (_, blobs, _, _)) => blobs |>
wenzelm@56458
   471
          fold (fn Exn.Res (_, SOME b) => Symtab.update (b, the_blob state b) | _ => I));
wenzelm@54519
   472
wenzelm@54519
   473
  in (versions', blobs', commands', execution) end);
wenzelm@38418
   474
wenzelm@38418
   475
wenzelm@52604
   476
(* document execution *)
wenzelm@47389
   477
wenzelm@60198
   478
fun make_required nodes =
wenzelm@60198
   479
  let
wenzelm@60198
   480
    fun all_preds P =
wenzelm@60198
   481
      String_Graph.fold (fn (a, (node, _)) => P node ? cons a) nodes []
wenzelm@60198
   482
      |> String_Graph.all_preds nodes
wenzelm@60198
   483
      |> Symtab.make_set;
wenzelm@60198
   484
wenzelm@60198
   485
    val all_visible = all_preds visible_node;
wenzelm@60198
   486
    val all_required = all_preds required_node;
wenzelm@60198
   487
  in
wenzelm@60198
   488
    Symtab.fold (fn (a, ()) =>
wenzelm@60198
   489
      exists (Symtab.defined all_visible) (String_Graph.immediate_succs nodes a) ?
wenzelm@60198
   490
        Symtab.update (a, ())) all_visible all_required
wenzelm@60198
   491
  end;
wenzelm@60198
   492
wenzelm@54519
   493
fun start_execution state = state |> map_state (fn (versions, blobs, commands, execution) =>
wenzelm@52796
   494
  timeit "Document.start_execution" (fn () =>
wenzelm@52796
   495
    let
wenzelm@68367
   496
      val {version_id, execution_id, delay_request, parallel_prints} = execution;
wenzelm@52798
   497
wenzelm@52798
   498
      val delay = seconds (Options.default_real "editor_execution_delay");
wenzelm@52774
   499
wenzelm@52798
   500
      val _ = Future.cancel delay_request;
wenzelm@62826
   501
      val delay_request' = Event_Timer.future (Time.now () + delay);
wenzelm@68367
   502
      val delay = Future.task_of delay_request';
wenzelm@68367
   503
wenzelm@68367
   504
      val parallel_prints' = parallel_prints
wenzelm@68367
   505
        |> map_filter (Command.exec_parallel_prints execution_id [delay]);
wenzelm@52798
   506
wenzelm@59198
   507
      fun finished_import (name, (node, _)) =
wenzelm@65445
   508
        finished_result node orelse is_some (Thy_Info.lookup_theory name);
wenzelm@60198
   509
wenzelm@60198
   510
      val nodes = nodes_of (the_version state version_id);
wenzelm@60198
   511
      val required = make_required nodes;
wenzelm@59193
   512
      val _ =
wenzelm@60198
   513
        nodes |> String_Graph.schedule
wenzelm@52573
   514
          (fn deps => fn (name, node) =>
wenzelm@60198
   515
            if Symtab.defined required name orelse visible_node node orelse pending_result node then
wenzelm@52774
   516
              let
wenzelm@52774
   517
                val future =
wenzelm@52774
   518
                  (singleton o Future.forks)
wenzelm@59193
   519
                   {name = "theory:" ^ name,
wenzelm@59193
   520
                    group = SOME (Future.new_group NONE),
wenzelm@68367
   521
                    deps = delay :: Execution.active_tasks name @ maps (the_list o #2 o #2) deps,
wenzelm@68866
   522
                    pri = 0, interrupts = false}
wenzelm@68866
   523
                  (fn () =>
wenzelm@68866
   524
                   (Execution.worker_task_active true name;
wenzelm@68866
   525
                    if forall finished_import deps then
wenzelm@68866
   526
                      iterate_entries (fn (_, opt_exec) => fn () =>
wenzelm@68866
   527
                        (case opt_exec of
wenzelm@68866
   528
                          SOME exec =>
wenzelm@68866
   529
                            if Execution.is_running execution_id
wenzelm@68866
   530
                            then SOME (Command.exec execution_id exec)
wenzelm@68866
   531
                            else NONE
wenzelm@68866
   532
                        | NONE => NONE)) node ()
wenzelm@68866
   533
                    else ();
wenzelm@68866
   534
                    Execution.worker_task_active false name)
wenzelm@68866
   535
                      handle exn =>
wenzelm@68866
   536
                       (Output.system_message (Runtime.exn_message exn);
wenzelm@68866
   537
                        Execution.worker_task_active false name;
wenzelm@68866
   538
                        Exn.reraise exn));
wenzelm@59198
   539
              in (node, SOME (Future.task_of future)) end
wenzelm@59198
   540
            else (node, NONE));
wenzelm@52798
   541
      val execution' =
wenzelm@68367
   542
        {version_id = version_id, execution_id = execution_id,
wenzelm@68367
   543
          delay_request = delay_request', parallel_prints = parallel_prints'};
wenzelm@54519
   544
    in (versions, blobs, commands, execution') end));
wenzelm@47345
   545
wenzelm@47345
   546
wenzelm@47420
   547
wenzelm@47420
   548
(** document update **)
wenzelm@38418
   549
wenzelm@52566
   550
(* exec state assignment *)
wenzelm@52566
   551
wenzelm@52566
   552
type assign_update = Command.exec option Inttab.table;  (*command id -> exec*)
wenzelm@52566
   553
wenzelm@52566
   554
val assign_update_empty: assign_update = Inttab.empty;
wenzelm@52566
   555
fun assign_update_defined (tab: assign_update) command_id = Inttab.defined tab command_id;
wenzelm@68337
   556
fun assign_update_change entry (tab: assign_update) = Inttab.update entry tab;
wenzelm@52566
   557
fun assign_update_apply (tab: assign_update) node = Inttab.fold assign_entry tab node;
wenzelm@52566
   558
wenzelm@52566
   559
fun assign_update_new upd (tab: assign_update) =
wenzelm@52566
   560
  Inttab.update_new upd tab
wenzelm@52566
   561
    handle Inttab.DUP dup => err_dup "exec state assignment" dup;
wenzelm@52566
   562
wenzelm@52566
   563
fun assign_update_result (tab: assign_update) =
wenzelm@52566
   564
  Inttab.fold (fn (command_id, exec) => cons (command_id, Command.exec_ids exec)) tab [];
wenzelm@52566
   565
wenzelm@52566
   566
wenzelm@52566
   567
(* update *)
wenzelm@52566
   568
wenzelm@38418
   569
local
wenzelm@38418
   570
wenzelm@48927
   571
fun init_theory deps node span =
wenzelm@47335
   572
  let
wenzelm@54526
   573
    val master_dir = master_directory node;
wenzelm@54526
   574
    val header = read_header node span;
wenzelm@48927
   575
    val imports = #imports header;
wenzelm@59716
   576
wenzelm@68869
   577
    fun maybe_eval_result eval = Command.eval_result_state eval
wenzelm@68869
   578
      handle Fail _ => Toplevel.toplevel;
wenzelm@68869
   579
wenzelm@68869
   580
    fun maybe_end_theory pos st = SOME (Toplevel.end_theory pos st)
wenzelm@68869
   581
      handle ERROR msg => (Output.error_message msg; NONE);
wenzelm@68869
   582
wenzelm@59716
   583
    val parents_reports =
wenzelm@59716
   584
      imports |> map_filter (fn (import, pos) =>
wenzelm@65445
   585
        (case Thy_Info.lookup_theory import of
wenzelm@59716
   586
          NONE =>
wenzelm@59716
   587
            maybe_end_theory pos
wenzelm@52536
   588
              (case get_result (snd (the (AList.lookup (op =) deps import))) of
wenzelm@52536
   589
                NONE => Toplevel.toplevel
wenzelm@68869
   590
              | SOME (_, eval) => maybe_eval_result eval)
wenzelm@59716
   591
        | some => some)
wenzelm@59716
   592
        |> Option.map (fn thy => (thy, (pos, Theory.get_markup thy))));
wenzelm@59716
   593
wenzelm@59716
   594
    val parents =
wenzelm@67380
   595
      if null parents_reports then [Theory.get_pure ()] else map #1 parents_reports;
wenzelm@59716
   596
    val _ = Position.reports (map #2 parents_reports);
wenzelm@68324
   597
    val thy = Resources.begin_theory master_dir header parents;
wenzelm@68324
   598
    val _ = Output.status (Markup.markup_only Markup.initialized);
wenzelm@68324
   599
  in thy end;
wenzelm@47335
   600
wenzelm@67215
   601
fun check_root_theory node =
wenzelm@67215
   602
  let
wenzelm@67215
   603
    val master_dir = master_directory node;
wenzelm@67215
   604
    val header = #header (get_header node);
wenzelm@67215
   605
    val header_name = #1 (#name header);
wenzelm@67215
   606
    val parent =
wenzelm@67215
   607
      if header_name = Sessions.root_name then
wenzelm@67215
   608
        SOME (Thy_Info.get_theory Sessions.theory_name)
wenzelm@67215
   609
      else if member (op =) Thy_Header.ml_roots header_name then
wenzelm@67215
   610
        SOME (Thy_Info.get_theory Thy_Header.ml_bootstrapN)
wenzelm@67215
   611
      else NONE;
wenzelm@67215
   612
  in parent |> Option.map (fn thy => Resources.begin_theory master_dir header [thy]) end;
wenzelm@62895
   613
wenzelm@47407
   614
fun check_theory full name node =
wenzelm@65445
   615
  is_some (Thy_Info.lookup_theory name) orelse
wenzelm@59715
   616
  null (#errors (get_header node)) andalso (not full orelse is_some (get_result node));
wenzelm@47335
   617
wenzelm@58923
   618
fun last_common keywords state node_required node0 node =
wenzelm@44482
   619
  let
wenzelm@44645
   620
    fun update_flags prev (visible, initial) =
wenzelm@44645
   621
      let
wenzelm@52569
   622
        val visible' = visible andalso prev <> visible_last node;
wenzelm@44645
   623
        val initial' = initial andalso
wenzelm@44645
   624
          (case prev of
wenzelm@44645
   625
            NONE => true
wenzelm@59735
   626
          | SOME command_id => the_command_name state command_id <> Thy_Header.theoryN);
wenzelm@44645
   627
      in (visible', initial') end;
wenzelm@52569
   628
wenzelm@52784
   629
    fun get_common ((prev, command_id), opt_exec) (_, ok, flags, assign_update) =
wenzelm@52784
   630
      if ok then
wenzelm@47630
   631
        let
wenzelm@52784
   632
          val flags' as (visible', _) = update_flags prev flags;
wenzelm@52784
   633
          val ok' =
wenzelm@52586
   634
            (case (lookup_entry node0 command_id, opt_exec) of
wenzelm@52784
   635
              (SOME (eval0, _), SOME (eval, _)) =>
wenzelm@52784
   636
                Command.eval_eq (eval0, eval) andalso
wenzelm@52784
   637
                  (visible' orelse node_required orelse Command.eval_running eval)
wenzelm@52586
   638
            | _ => false);
wenzelm@52784
   639
          val assign_update' = assign_update |> ok' ?
wenzelm@52569
   640
            (case opt_exec of
wenzelm@52569
   641
              SOME (eval, prints) =>
wenzelm@52569
   642
                let
wenzelm@52569
   643
                  val command_visible = visible_command node command_id;
wenzelm@52850
   644
                  val command_overlays = overlays node command_id;
wenzelm@52569
   645
                  val command_name = the_command_name state command_id;
wenzelm@52569
   646
                in
wenzelm@58923
   647
                  (case
wenzelm@58923
   648
                    Command.print command_visible command_overlays keywords command_name eval prints
wenzelm@58923
   649
                   of
wenzelm@52569
   650
                    SOME prints' => assign_update_new (command_id, SOME (eval, prints'))
wenzelm@52569
   651
                  | NONE => I)
wenzelm@52569
   652
                end
wenzelm@52569
   653
            | NONE => I);
wenzelm@52784
   654
        in SOME (prev, ok', flags', assign_update') end
wenzelm@47630
   655
      else NONE;
wenzelm@52784
   656
    val (common, ok, flags, assign_update') =
wenzelm@52569
   657
      iterate_entries get_common node (NONE, true, (true, true), assign_update_empty);
wenzelm@52569
   658
    val (common', flags') =
wenzelm@52784
   659
      if ok then
wenzelm@52569
   660
        let val last = Entries.get_after (get_entries node) common
wenzelm@52569
   661
        in (last, update_flags last flags) end
wenzelm@52569
   662
      else (common, flags);
wenzelm@52569
   663
  in (assign_update', common', flags') end;
wenzelm@44645
   664
wenzelm@62895
   665
fun illegal_init _ = error "Illegal theory header";
wenzelm@52534
   666
wenzelm@58923
   667
fun new_exec keywords state node proper_init command_id' (assign_update, command_exec, init) =
wenzelm@47407
   668
  if not proper_init andalso is_none init then NONE
wenzelm@44645
   669
  else
wenzelm@44645
   670
    let
wenzelm@52850
   671
      val command_visible = visible_command node command_id';
wenzelm@52850
   672
      val command_overlays = overlays node command_id';
wenzelm@59689
   673
      val (command_name, blob_digests, blobs_index, span0) = the_command state command_id';
wenzelm@56447
   674
      val blobs = map (resolve_blob state) blob_digests;
wenzelm@54519
   675
      val span = Lazy.force span0;
wenzelm@52566
   676
wenzelm@54519
   677
      val eval' =
wenzelm@66370
   678
        Command.eval keywords (master_directory node) (fn () => the_default illegal_init init span)
wenzelm@68185
   679
          (blobs, blobs_index) command_id' span (#1 (#2 command_exec));
wenzelm@58923
   680
      val prints' =
wenzelm@58923
   681
        perhaps (Command.print command_visible command_overlays keywords command_name eval') [];
wenzelm@52566
   682
      val exec' = (eval', prints');
wenzelm@44482
   683
wenzelm@52566
   684
      val assign_update' = assign_update_new (command_id', SOME exec') assign_update;
wenzelm@59735
   685
      val init' = if command_name = Thy_Header.theoryN then NONE else init;
wenzelm@66370
   686
    in SOME (assign_update', (command_id', exec'), init') end;
wenzelm@52602
   687
wenzelm@52655
   688
fun removed_execs node0 (command_id, exec_ids) =
wenzelm@52655
   689
  subtract (op =) exec_ids (Command.exec_ids (lookup_entry node0 command_id));
wenzelm@52602
   690
wenzelm@68337
   691
fun print_consolidation options the_command_span node_name (assign_update, node) =
wenzelm@68337
   692
  (case finished_result_theory node of
wenzelm@68337
   693
    SOME (result_id, thy) =>
wenzelm@68337
   694
      let
wenzelm@68381
   695
        val active_tasks =
wenzelm@68381
   696
          (node, false) |-> iterate_entries (fn (_, opt_exec) => fn active =>
wenzelm@68381
   697
            if active then NONE
wenzelm@68381
   698
            else
wenzelm@68381
   699
              (case opt_exec of
wenzelm@68381
   700
                NONE => NONE
wenzelm@68381
   701
              | SOME (eval, _) =>
wenzelm@68381
   702
                  SOME (not (null (Execution.snapshot [Command.eval_exec_id eval])))));
wenzelm@68337
   703
      in
wenzelm@68381
   704
        if not active_tasks then
wenzelm@68337
   705
          let
wenzelm@68337
   706
            val consolidation =
wenzelm@68337
   707
              if Options.bool options "editor_presentation" then
wenzelm@68337
   708
                let
wenzelm@68337
   709
                  val (_, offsets, rev_segments) =
wenzelm@68337
   710
                    iterate_entries (fn (_, opt_exec) => fn (offset, offsets, segments) =>
wenzelm@68337
   711
                      (case opt_exec of
wenzelm@68337
   712
                        SOME (eval, _) =>
wenzelm@68337
   713
                          let
wenzelm@68337
   714
                            val command_id = Command.eval_command_id eval;
wenzelm@68337
   715
                            val span = the_command_span command_id;
wenzelm@68337
   716
wenzelm@68337
   717
                            val exec_id = Command.eval_exec_id eval;
wenzelm@68337
   718
                            val tr = Command.eval_result_command eval;
wenzelm@68337
   719
                            val st' = Command.eval_result_state eval;
wenzelm@68337
   720
wenzelm@68337
   721
                            val offset' = offset + the_default 0 (Command_Span.symbol_length span);
wenzelm@68337
   722
                            val offsets' = offsets
wenzelm@68337
   723
                              |> Inttab.update (command_id, offset)
wenzelm@68337
   724
                              |> Inttab.update (exec_id, offset);
wenzelm@68337
   725
                            val segments' = (span, tr, st') :: segments;
wenzelm@68337
   726
                          in SOME (offset', offsets', segments') end
wenzelm@68337
   727
                      | NONE => NONE)) node (0, Inttab.empty, []);
wenzelm@68337
   728
wenzelm@68337
   729
                  val adjust = Inttab.lookup offsets;
wenzelm@68337
   730
                  val segments =
wenzelm@68337
   731
                    rev rev_segments |> map (fn (span, tr, st') =>
wenzelm@68337
   732
                      {span = Command_Span.adjust_offsets adjust span, command = tr, state = st'});
wenzelm@68337
   733
wenzelm@68337
   734
                  val presentation_context: Thy_Info.presentation_context =
wenzelm@68337
   735
                   {options = options,
wenzelm@68337
   736
                    file_pos = Position.file node_name,
wenzelm@68337
   737
                    adjust_pos = Position.adjust_offsets adjust,
wenzelm@68337
   738
                    segments = segments};
wenzelm@68337
   739
                in
wenzelm@68345
   740
                  fn _ =>
wenzelm@68538
   741
                    Exn.release
wenzelm@68538
   742
                      (Exn.capture (Thy_Info.apply_presentation presentation_context) thy
wenzelm@68538
   743
                        before commit_consolidated node)
wenzelm@68337
   744
                end
wenzelm@68345
   745
              else fn _ => commit_consolidated node;
wenzelm@68337
   746
wenzelm@68337
   747
            val result_entry =
wenzelm@68337
   748
              (case lookup_entry node result_id of
wenzelm@68337
   749
                NONE => err_undef "result command entry" result_id
wenzelm@68337
   750
              | SOME (eval, prints) =>
wenzelm@68345
   751
                  let
wenzelm@68345
   752
                    val print = eval |> Command.print0
wenzelm@68345
   753
                      {pri = Task_Queue.urgent_pri + 1, print_fn = K consolidation};
wenzelm@68345
   754
                  in (result_id, SOME (eval, print :: prints)) end);
wenzelm@68337
   755
wenzelm@68337
   756
            val assign_update' = assign_update |> assign_update_change result_entry;
wenzelm@68337
   757
            val node' = node |> assign_entry result_entry;
wenzelm@68337
   758
          in (assign_update', node') end
wenzelm@68337
   759
        else (assign_update, node)
wenzelm@68337
   760
      end
wenzelm@68337
   761
  | NONE => (assign_update, node));
wenzelm@38418
   762
in
wenzelm@38418
   763
wenzelm@68337
   764
fun update old_version_id new_version_id edits consolidate state =
wenzelm@68337
   765
  Runtime.exn_trace_system (fn () =>
wenzelm@38418
   766
  let
wenzelm@68337
   767
    val options = Options.default ();
wenzelm@68337
   768
    val the_command_span = Outer_Syntax.make_span o Lazy.force o #4 o the_command state;
wenzelm@68337
   769
wenzelm@52536
   770
    val old_version = the_version state old_version_id;
wenzelm@59086
   771
    val new_version =
wenzelm@59086
   772
      timeit "Document.edit_nodes"
wenzelm@59086
   773
        (fn () => old_version |> fold edit_nodes edits |> edit_keywords edits);
wenzelm@38418
   774
wenzelm@68382
   775
    val consolidate = Symtab.defined (Symtab.make_set consolidate);
wenzelm@44544
   776
    val nodes = nodes_of new_version;
wenzelm@52776
   777
    val required = make_required nodes;
wenzelm@52776
   778
    val required0 = make_required (nodes_of old_version);
wenzelm@52772
   779
    val edited = fold (fn (name, _) => Symtab.update (name, ())) edits Symtab.empty;
wenzelm@44544
   780
wenzelm@47628
   781
    val updated = timeit "Document.update" (fn () =>
wenzelm@50862
   782
      nodes |> String_Graph.schedule
wenzelm@44199
   783
        (fn deps => fn (name, node) =>
wenzelm@47406
   784
          (singleton o Future.forks)
wenzelm@47406
   785
            {name = "Document.update", group = NONE,
wenzelm@52716
   786
              deps = map (Future.task_of o #2) deps, pri = 1, interrupts = false}
wenzelm@59056
   787
            (fn () =>
wenzelm@59056
   788
              timeit ("Document.update " ^ name) (fn () =>
wenzelm@59056
   789
                Runtime.exn_trace_system (fn () =>
wenzelm@44482
   790
                  let
wenzelm@67215
   791
                    val root_theory = check_root_theory node;
wenzelm@59086
   792
                    val keywords = the_default (Session.get_keywords ()) (get_keywords node);
wenzelm@68337
   793
wenzelm@68382
   794
                    val maybe_consolidate = consolidate name andalso could_consolidate node;
wenzelm@59056
   795
                    val imports = map (apsnd Future.join) deps;
wenzelm@59056
   796
                    val imports_result_changed = exists (#4 o #1 o #2) imports;
wenzelm@59056
   797
                    val node_required = Symtab.defined required name;
wenzelm@59056
   798
                  in
wenzelm@68337
   799
                    if Symtab.defined edited name orelse maybe_consolidate orelse
wenzelm@68337
   800
                      visible_node node orelse imports_result_changed orelse
wenzelm@68337
   801
                      Symtab.defined required0 name <> node_required
wenzelm@59056
   802
                    then
wenzelm@59056
   803
                      let
wenzelm@59056
   804
                        val node0 = node_of old_version name;
wenzelm@59056
   805
                        val init = init_theory imports node;
wenzelm@59056
   806
                        val proper_init =
wenzelm@67215
   807
                          is_some root_theory orelse
wenzelm@62895
   808
                            check_theory false name node andalso
wenzelm@62895
   809
                            forall (fn (name, (_, node)) => check_theory true name node) imports;
wenzelm@47406
   810
wenzelm@59056
   811
                        val (print_execs, common, (still_visible, initial)) =
wenzelm@59056
   812
                          if imports_result_changed then (assign_update_empty, NONE, (true, true))
wenzelm@59056
   813
                          else last_common keywords state node_required node0 node;
wenzelm@62895
   814
wenzelm@62895
   815
                        val common_command_exec =
wenzelm@62895
   816
                          (case common of
wenzelm@62895
   817
                            SOME id => (id, the_default Command.no_exec (the_entry node id))
wenzelm@67215
   818
                          | NONE => (Document_ID.none, Command.init_exec root_theory));
wenzelm@44479
   819
wenzelm@66370
   820
                        val (updated_execs, (command_id', exec'), _) =
wenzelm@59056
   821
                          (print_execs, common_command_exec, if initial then SOME init else NONE)
wenzelm@59056
   822
                          |> (still_visible orelse node_required) ?
wenzelm@59056
   823
                            iterate_entries_after common
wenzelm@59056
   824
                              (fn ((prev, id), _) => fn res =>
wenzelm@59056
   825
                                if not node_required andalso prev = visible_last node then NONE
wenzelm@59056
   826
                                else new_exec keywords state node proper_init id res) node;
wenzelm@44479
   827
wenzelm@68337
   828
                        val assign_update =
wenzelm@59056
   829
                          (node0, updated_execs) |-> iterate_entries_after common
wenzelm@59056
   830
                            (fn ((_, command_id0), exec0) => fn res =>
wenzelm@59056
   831
                              if is_none exec0 then NONE
wenzelm@59056
   832
                              else if assign_update_defined updated_execs command_id0 then SOME res
wenzelm@59056
   833
                              else SOME (assign_update_new (command_id0, NONE) res));
wenzelm@44480
   834
wenzelm@59056
   835
                        val last_exec =
wenzelm@59056
   836
                          if command_id' = Document_ID.none then NONE else SOME command_id';
wenzelm@59056
   837
                        val result =
wenzelm@59056
   838
                          if is_none last_exec orelse is_some (after_entry node last_exec) then NONE
wenzelm@68337
   839
                          else SOME (command_id', #1 exec');
wenzelm@52602
   840
wenzelm@66382
   841
                        val result_changed =
wenzelm@68337
   842
                          not (eq_option (Command.eval_eq o apply2 #2) (get_result node0, result));
wenzelm@68337
   843
                        val (assign_update', node') = node
wenzelm@68337
   844
                          |> assign_update_apply assign_update
wenzelm@66382
   845
                          |> set_result result
wenzelm@68337
   846
                          |> result_changed ? reset_consolidated
wenzelm@68337
   847
                          |> pair assign_update
wenzelm@68337
   848
                          |> (not result_changed andalso maybe_consolidate) ?
wenzelm@68337
   849
                              print_consolidation options the_command_span name;
wenzelm@68337
   850
wenzelm@68337
   851
                        val assign_result = assign_update_result assign_update';
wenzelm@68337
   852
                        val removed = maps (removed_execs node0) assign_result;
wenzelm@68337
   853
                        val _ = List.app Execution.cancel removed;
wenzelm@68337
   854
wenzelm@59056
   855
                        val assigned_node = SOME (name, node');
wenzelm@68337
   856
                      in ((removed, assign_result, assigned_node, result_changed), node') end
wenzelm@59056
   857
                    else (([], [], NONE, false), node)
wenzelm@59056
   858
                  end))))
wenzelm@47628
   859
      |> Future.joins |> map #1);
wenzelm@44476
   860
wenzelm@52655
   861
    val removed = maps #1 updated;
wenzelm@68337
   862
    val assign_result = maps #2 updated;
wenzelm@52602
   863
    val assigned_nodes = map_filter #3 updated;
wenzelm@52602
   864
wenzelm@44197
   865
    val state' = state
wenzelm@68367
   866
      |> define_version new_version_id new_version assigned_nodes;
wenzelm@52602
   867
wenzelm@68337
   868
  in (removed, assign_result, state') end);
wenzelm@38418
   869
wenzelm@38418
   870
end;
wenzelm@38418
   871
wenzelm@38418
   872
wenzelm@43713
   873
wenzelm@43713
   874
(** global state **)
wenzelm@43713
   875
wenzelm@52508
   876
val global_state = Synchronized.var "Document.global_state" init_state;
wenzelm@43713
   877
wenzelm@43713
   878
fun state () = Synchronized.value global_state;
wenzelm@43713
   879
val change_state = Synchronized.change global_state;
wenzelm@43713
   880
wenzelm@38418
   881
end;