1 (* Title: Pure/PIDE/document.ML
4 Document as collection of named nodes, each consisting of an editable
5 list of commands, associated with asynchronous execution process.
15 val new_id: unit -> id
16 val parse_id: string -> id
17 val print_id: id -> string
18 type node_header = (string * string list * (string * bool) list) Exn.result
21 Edits of (command_id option * command_id option) list |
23 type edit = string * node_edit
26 val join_commands: state -> unit
27 val cancel_execution: state -> unit -> unit
28 val define_command: command_id -> string -> state -> state
29 val edit: version_id -> version_id -> edit list -> state -> (command_id * exec_id) list * state
30 val execute: version_id -> state -> state
31 val state: unit -> state
32 val change_state: (state -> state) -> unit
35 structure Document: DOCUMENT =
38 (* unique identifiers *)
46 val new_id = Synchronized.counter ();
48 val parse_id = Markup.parse_int;
49 val print_id = Markup.print_int;
51 fun err_dup kind id = error ("Duplicate " ^ kind ^ ": " ^ print_id id);
52 fun err_undef kind id = error ("Undefined " ^ kind ^ ": " ^ print_id id);
56 (** document structure **)
58 type node_header = (string * string list * (string * bool) list) Exn.result;
59 structure Entries = Linear_Set(type key = command_id val ord = int_ord);
61 abstype node = Node of
63 entries: exec_id option Entries.T, (*command entries with excecutions*)
64 result: Toplevel.state lazy}
65 and version = Version of node Graph.T (*development graph wrt. static imports*)
68 fun make_node (header, entries, result) =
69 Node {header = header, entries = entries, result = result};
71 fun map_node f (Node {header, entries, result}) =
72 make_node (f (header, entries, result));
74 fun get_header (Node {header, ...}) = header;
75 fun set_header header = map_node (fn (_, entries, result) => (header, entries, result));
77 fun map_entries f (Node {header, entries, result}) = make_node (header, f entries, result);
78 fun fold_entries start f (Node {entries, ...}) = Entries.fold start f entries;
79 fun first_entry start P (Node {entries, ...}) = Entries.get_first start P entries;
81 fun get_theory pos (Node {result, ...}) = Toplevel.end_theory pos (Lazy.get_finished result);
82 fun set_result result = map_node (fn (header, entries, _) => (header, entries, result));
84 val empty_exec = Lazy.value Toplevel.toplevel;
85 val empty_node = make_node (Exn.Exn (ERROR "Bad theory header"), Entries.empty, empty_exec);
86 val clear_node = map_node (fn (header, _, _) => (header, Entries.empty, empty_exec));
88 fun get_node nodes name = Graph.get_node nodes name handle Graph.UNDEF _ => empty_node;
89 fun remove_node name nodes = Graph.del_node name nodes handle Graph.UNDEF _ => nodes;
90 fun update_node name f = Graph.default_node (name, empty_node) #> Graph.map_node name f;
93 (* node edits and associated executions *)
97 Edits of (command_id option * command_id option) list |
98 Header of node_header;
100 type edit = string * node_edit;
102 fun the_entry (Node {entries, ...}) id =
103 (case Entries.lookup entries id of
104 NONE => err_undef "command entry" id
105 | SOME entry => entry);
107 fun update_entry (id, exec_id) =
108 map_entries (Entries.update (id, SOME exec_id));
110 fun reset_after id entries =
111 (case Entries.get_after entries id of
113 | SOME next => Entries.update (next, NONE) entries);
115 val edit_node = map_entries o fold
116 (fn (id, SOME id2) => Entries.insert_after id (id2, NONE)
117 | (id, NONE) => Entries.delete_after id #> reset_after id);
120 (* version operations *)
122 val empty_version = Version Graph.empty;
124 fun nodes_of (Version nodes) = nodes;
125 val node_of = get_node o nodes_of;
127 fun cycle_msg names = "Cyclic dependency of " ^ space_implode " via " (map quote names);
129 fun edit_nodes (name, node_edit) (Version nodes) =
132 Clear => update_node name clear_node nodes
133 | Edits edits => update_node name (edit_node edits) nodes
136 val node = get_node nodes name;
137 val nodes' = Graph.new_node (name, node) (remove_node name nodes);
139 (case header of Exn.Res (_, parents, _) => parents | _ => [])
140 |> filter (can (Graph.get_node nodes'));
141 val (header', nodes'') =
142 (header, Graph.add_deps_acyclic (name, parents) nodes')
143 handle Graph.CYCLES cs => (Exn.Exn (ERROR (cat_lines (map cycle_msg cs))), nodes');
144 in Graph.map_node name (set_header header') nodes'' end);
146 fun put_node (name, node) (Version nodes) =
148 |> Graph.default_node (name, empty_node)
149 |> Graph.map_node name (K node));
155 (** global state -- document structure and execution process **)
157 abstype state = State of
158 {versions: version Inttab.table, (*version_id -> document content*)
159 commands: Toplevel.transition future Inttab.table, (*command_id -> transition (future parsing)*)
160 execs: Toplevel.state lazy Inttab.table, (*exec_id -> execution process*)
161 execution: unit future list} (*global execution process*)
164 fun make_state (versions, commands, execs, execution) =
165 State {versions = versions, commands = commands, execs = execs, execution = execution};
167 fun map_state f (State {versions, commands, execs, execution}) =
168 make_state (f (versions, commands, execs, execution));
171 make_state (Inttab.make [(no_id, empty_version)],
172 Inttab.make [(no_id, Future.value Toplevel.empty)],
173 Inttab.make [(no_id, empty_exec)],
177 (* document versions *)
179 fun define_version (id: version_id) version =
180 map_state (fn (versions, commands, execs, execution) =>
181 let val versions' = Inttab.update_new (id, version) versions
182 handle Inttab.DUP dup => err_dup "document version" dup
183 in (versions', commands, execs, execution) end);
185 fun the_version (State {versions, ...}) (id: version_id) =
186 (case Inttab.lookup versions id of
187 NONE => err_undef "document version" id
188 | SOME version => version);
193 fun define_command (id: command_id) text =
194 map_state (fn (versions, commands, execs, execution) =>
196 val id_string = print_id id;
197 val tr = Future.fork_pri 2 (fn () =>
198 Position.setmp_thread_data (Position.id_only id_string)
199 (fn () => Outer_Syntax.prepare_command (Position.id id_string) text) ());
201 Inttab.update_new (id, tr) commands
202 handle Inttab.DUP dup => err_dup "command" dup;
203 in (versions, commands', execs, execution) end);
205 fun the_command (State {commands, ...}) (id: command_id) =
206 (case Inttab.lookup commands id of
207 NONE => err_undef "command" id
210 fun join_commands (State {commands, ...}) =
211 Inttab.fold (fn (_, tr) => fn () => ignore (Future.join_result tr)) commands ();
214 (* command executions *)
216 fun define_exec (exec_id, exec) =
217 map_state (fn (versions, commands, execs, execution) =>
218 let val execs' = Inttab.update_new (exec_id, exec) execs
219 handle Inttab.DUP dup => err_dup "command execution" dup
220 in (versions, commands, execs', execution) end);
222 fun the_exec (State {execs, ...}) exec_id =
223 (case Inttab.lookup execs exec_id of
224 NONE => err_undef "command execution" exec_id
225 | SOME exec => exec);
228 (* document execution *)
230 fun cancel_execution (State {execution, ...}) =
231 (List.app Future.cancel execution;
232 fn () => ignore (Future.join_results execution));
238 (* toplevel transactions *)
242 fun timing tr t = Toplevel.status tr (Markup.timing t);
244 fun proof_status tr st =
245 (case try Toplevel.proof_of st of
246 SOME prf => Toplevel.status tr (Proof.status_markup prf)
249 fun async_state tr st =
252 (Future.forks {name = "Document.async_state",
253 group = SOME (Task_Queue.new_group NONE), deps = [], pri = 0, interrupts = true})
255 Toplevel.setmp_thread_position tr
256 (fn () => Toplevel.print_state false st) ()));
259 (case Toplevel.transition int tr st of
260 SOME (st', NONE) => ([], SOME st')
261 | SOME (_, SOME exn_info) =>
262 (case ML_Compiler.exn_messages (Runtime.EXCURSION_FAIL exn_info) of
263 [] => Exn.interrupt ()
264 | errs => (errs, NONE))
265 | NONE => ([ML_Compiler.exn_message Runtime.TERMINATE], NONE));
269 fun run_command tr st =
271 val is_init = Toplevel.is_init tr;
272 val is_proof = Keyword.is_proof (Toplevel.name_of tr);
273 val do_print = not is_init andalso (Toplevel.print_of tr orelse is_proof);
275 val start = Timing.start ();
277 if Toplevel.is_toplevel st andalso not is_init then ([], SOME st)
278 else run (is_init orelse is_proof) (Toplevel.set_print false tr) st;
279 val _ = timing tr (Timing.result start);
280 val _ = List.app (Toplevel.error_msg tr) errs;
283 NONE => (Toplevel.status tr Markup.failed; st)
285 (Toplevel.status tr Markup.finished;
287 if do_print then async_state tr st' else ();
302 fun is_changed node' ((_, id), exec) =
303 (case try (the_entry node') id of
305 | SOME exec' => exec' <> exec);
307 fun new_exec (command_id, command) (assigns, execs, exec) =
309 val exec_id' = new_id ();
313 val tr = Toplevel.put_id (print_id exec_id') (Future.get_finished command);
314 val st = Lazy.get_finished exec;
315 in run_command tr st end);
316 in ((command_id, exec_id') :: assigns, (exec_id', exec') :: execs, exec') end;
320 fun edit (old_id: version_id) (new_id: version_id) edits state =
322 val old_version = the_version state old_id;
323 val _ = Time.now (); (* FIXME odd workaround for polyml-5.4.0/x86_64 *)
324 val new_version = fold edit_nodes edits old_version;
327 nodes_of new_version |> Graph.schedule
328 (fn deps => fn (name, node) =>
329 (case first_entry NONE (is_changed (node_of old_version name)) node of
330 NONE => Future.value (([], [], []), node)
331 | SOME ((prev, id), _) =>
335 val (thy_name, imports, uses) = Exn.release (get_header node);
336 (* FIXME provide files via Scala layer *)
337 val dir = Path.dir (Path.explode name);
338 val files = map (apfst Path.explode) uses;
341 imports |> map (fn import =>
342 (case AList.lookup (op =) deps import of
343 SOME parent_future =>
344 get_theory (Position.file_only (import ^ ".thy"))
345 (#2 (Future.join parent_future))
346 | NONE => Thy_Info.get_theory (Thy_Info.base_name import)));
347 in Thy_Load.begin_theory dir thy_name imports files parents end
349 (id, the_command state id |> Future.map (Toplevel.modify_init init));
352 (Future.forks {name = "Document.edit", group = NONE,
353 deps = map (Future.task_of o #2) deps, pri = 2, interrupts = false})
359 | SOME prev_id => the_default no_id (the_entry node prev_id));
360 val (assigns, execs, result) =
361 fold_entries (SOME id) (new_exec o get_command o #2 o #1)
362 node ([], [], the_exec state prev_exec);
364 |> fold update_entry assigns
365 |> set_result result;
366 in ((assigns, execs, [(name, node')]), node') end)
368 |> Future.join_results |> Exn.release_all |> map #1;
371 |> fold (fold define_exec o #2) updates
372 |> define_version new_id (fold (fold put_node o #3) updates new_version);
374 in (maps #1 (rev updates), state') end;
381 fun execute version_id state =
382 state |> map_state (fn (versions, commands, execs, _) =>
384 val version = the_version state version_id;
386 fun force_exec NONE = ()
387 | force_exec (SOME exec_id) = ignore (Lazy.force (the_exec state exec_id));
390 nodes_of version |> Graph.schedule
391 (fn deps => fn (name, node) =>
394 {name = "theory:" ^ name, group = NONE,
395 deps = map (Future.task_of o #2) deps,
396 pri = 1, interrupts = true})
397 (fold_entries NONE (fn (_, exec) => fn () => force_exec exec) node));
399 in (versions, commands, execs, execution') end);
405 val global_state = Synchronized.var "Document" init_state;
407 fun state () = Synchronized.value global_state;
408 val change_state = Synchronized.change global_state;