author | wenzelm |
Tue, 15 Sep 2009 15:17:53 +0200 | |
changeset 32573 | 62b5b538408d |
parent 32467 | 4dab52ca1402 |
child 32738 | 15bb09ca0378 |
permissions | -rw-r--r-- |
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(* Title: Pure/Isar/isar_document.ML |
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Author: Makarius |
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Interactive Isar documents. |
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*) |
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signature ISAR_DOCUMENT = |
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sig |
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type state_id = string |
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type command_id = string |
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type document_id = string |
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val define_command: command_id -> Toplevel.transition -> unit |
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val begin_document: document_id -> Path.T -> unit |
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val end_document: document_id -> unit |
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val edit_document: document_id -> document_id -> (command_id * command_id option) list -> unit |
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end; |
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structure Isar_Document: ISAR_DOCUMENT = |
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struct |
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(* unique identifiers *) |
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type state_id = string; |
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type command_id = string; |
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type document_id = string; |
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fun make_id () = "i" ^ serial_string (); |
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fun err_dup kind id = error ("Duplicate " ^ kind ^ ": " ^ quote id); |
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fun err_undef kind id = error ("Unknown " ^ kind ^ ": " ^ quote id); |
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||
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(** documents **) |
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(* command entries *) |
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datatype entry = Entry of {next: command_id option, state: state_id option}; |
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fun make_entry next state = Entry {next = next, state = state}; |
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fun the_entry entries (id: command_id) = |
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(case Symtab.lookup entries id of |
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NONE => err_undef "document entry" id |
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| SOME (Entry entry) => entry); |
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fun put_entry (id: command_id, entry: entry) = Symtab.update (id, entry); |
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fun put_entry_state (id: command_id) state entries = |
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let val {next, ...} = the_entry entries id |
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in put_entry (id, make_entry next state) entries end; |
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fun reset_entry_state id = put_entry_state id NONE; |
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fun set_entry_state (id, state_id) = put_entry_state id (SOME state_id); |
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(* document *) |
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datatype document = Document of |
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{dir: Path.T, (*master directory*) |
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name: string, (*theory name*) |
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start: command_id, (*empty start command*) |
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entries: entry Symtab.table}; (*unique command entries indexed by command_id*) |
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fun make_document dir name start entries = |
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Document {dir = dir, name = name, start = start, entries = entries}; |
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fun map_entries f (Document {dir, name, start, entries}) = |
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make_document dir name start (f entries); |
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(* iterate entries *) |
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fun fold_entries id0 f (Document {entries, ...}) = |
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let |
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fun apply NONE x = x |
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| apply (SOME id) x = |
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let val entry = the_entry entries id |
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in apply (#next entry) (f (id, entry) x) end; |
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in if Symtab.defined entries id0 then apply (SOME id0) else I end; |
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fun first_entry P (Document {start, entries, ...}) = |
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let |
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fun first _ NONE = NONE |
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| first prev (SOME id) = |
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let val entry = the_entry entries id |
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in if P (id, entry) then SOME (prev, id, entry) else first (SOME id) (#next entry) end; |
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in first NONE (SOME start) end; |
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(* modify entries *) |
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fun insert_after (id: command_id) (id2: command_id) = map_entries (fn entries => |
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let val {next, state} = the_entry entries id in |
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entries |
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|> put_entry (id, make_entry (SOME id2) state) |
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|> put_entry (id2, make_entry next NONE) |
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end); |
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fun delete_after (id: command_id) = map_entries (fn entries => |
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let val {next, state} = the_entry entries id in |
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(case next of |
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NONE => error ("No next entry to delete: " ^ quote id) |
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| SOME id2 => |
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entries |> |
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(case #next (the_entry entries id2) of |
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NONE => put_entry (id, make_entry NONE state) |
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| SOME id3 => put_entry (id, make_entry (SOME id3) state) #> reset_entry_state id3)) |
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end); |
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(** global configuration **) |
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local |
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val global_states = ref (Symtab.empty: Toplevel.state option future Symtab.table); |
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val global_commands = ref (Symtab.empty: Toplevel.transition Symtab.table); |
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val global_documents = ref (Symtab.empty: document Symtab.table); |
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in |
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fun change_states f = NAMED_CRITICAL "Isar" (fn () => change global_states f); |
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fun get_states () = NAMED_CRITICAL "Isar" (fn () => ! global_states); |
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fun change_commands f = NAMED_CRITICAL "Isar" (fn () => change global_commands f); |
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fun get_commands () = NAMED_CRITICAL "Isar" (fn () => ! global_commands); |
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fun change_documents f = NAMED_CRITICAL "Isar" (fn () => change global_documents f); |
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fun get_documents () = NAMED_CRITICAL "Isar" (fn () => ! global_documents); |
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fun init () = NAMED_CRITICAL "Isar" (fn () => |
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(global_states := Symtab.empty; |
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global_commands := Symtab.empty; |
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global_documents := Symtab.empty)); |
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end; |
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(* state *) |
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val empty_state = Future.value (SOME Toplevel.toplevel); |
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fun define_state (id: state_id) = |
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change_states (Symtab.update_new (id, empty_state)) |
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handle Symtab.DUP dup => err_dup "state" dup; |
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fun put_state (id: state_id) state = change_states (Symtab.update (id, state)); |
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fun the_state (id: state_id) = |
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(case Symtab.lookup (get_states ()) id of |
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NONE => err_undef "state" id |
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| SOME state => state); |
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(* command *) |
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fun define_command id tr = |
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change_commands (Symtab.update_new (id, Toplevel.put_id id tr)) |
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handle Symtab.DUP dup => err_dup "command" dup; |
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fun the_command (id: command_id) = |
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(case Symtab.lookup (get_commands ()) id of |
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NONE => err_undef "command" id |
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| SOME tr => tr); |
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(* document *) |
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fun define_document (id: document_id) document = |
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change_documents (Symtab.update_new (id, document)) |
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handle Symtab.DUP dup => err_dup "document" dup; |
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fun the_document (id: document_id) = |
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(case Symtab.lookup (get_documents ()) id of |
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NONE => err_undef "document" id |
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| SOME document => document); |
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(** main operations **) |
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(* begin/end document *) |
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fun begin_document (id: document_id) path = |
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let |
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val (dir, name) = ThyLoad.split_thy_path path; |
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val _ = define_command id Toplevel.empty; |
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val _ = define_state id; |
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val entries = Symtab.make [(id, make_entry NONE (SOME id))]; |
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val _ = define_document id (make_document dir name id entries); |
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in () end; |
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fun end_document (id: document_id) = |
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let |
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val document as Document {name, ...} = the_document id; |
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val end_state = |
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the_state (the (#state (#3 (the |
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(first_entry (fn (_, {next, ...}) => is_none next) document))))); |
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val _ = |
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Future.fork_deps [end_state] (fn () => |
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(case Future.join end_state of |
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SOME st => |
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(Toplevel.run_command name (Toplevel.put_id id (Toplevel.commit_exit Position.none)) st; |
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ThyInfo.touch_child_thys name; |
|
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ThyInfo.register_thy name) |
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| NONE => error ("Failed to finish theory " ^ quote name))); |
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in () end; |
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|
207 |
||
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(* document editing *) |
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209 |
||
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local |
211 |
||
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fun is_changed entries' (id, {next = _, state}) = |
|
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(case try (the_entry entries') id of |
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NONE => true |
215 |
| SOME {next = _, state = state'} => state' <> state); |
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|
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fun new_state name (id, _) (state_id, updates) = |
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let |
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val state_id' = make_id (); |
220 |
val _ = define_state state_id'; |
|
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val tr = Toplevel.put_id state_id' (the_command id); |
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fun make_state' () = |
223 |
let |
|
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val state = the_state state_id; |
|
225 |
val state' = |
|
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Future.fork_deps [state] (fn () => |
|
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(case Future.join state of |
|
228 |
NONE => NONE |
|
229 |
| SOME st => Toplevel.run_command name tr st)); |
|
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in put_state state_id' state' end; |
|
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in (state_id', ((id, state_id'), make_state') :: updates) end; |
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fun report_updates _ [] = () |
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| report_updates (document_id: document_id) updates = |
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implode (map (fn (id, state_id) => Markup.markup (Markup.edit id state_id) "") updates) |
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|> Markup.markup (Markup.edits document_id) |
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|> Output.status; |
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|
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in |
240 |
||
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fun edit_document (old_id: document_id) (new_id: document_id) edits = |
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let |
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val old_document as Document {name, entries = old_entries, ...} = the_document old_id; |
244 |
val new_document as Document {entries = new_entries, ...} = old_document |
|
245 |
|> fold (fn (id, SOME id2) => insert_after id id2 | (id, NONE) => delete_after id) edits; |
|
246 |
||
247 |
fun cancel_old id = fold_entries id |
|
248 |
(fn (_, {state = SOME state_id, ...}) => K (Future.cancel (the_state state_id)) | _ => K ()) |
|
249 |
old_document (); |
|
250 |
||
251 |
val (updates, new_document') = |
|
252 |
(case first_entry (is_changed old_entries) new_document of |
|
253 |
NONE => |
|
254 |
(case first_entry (is_changed new_entries) old_document of |
|
255 |
NONE => ([], new_document) |
|
256 |
| SOME (_, id, _) => (cancel_old id; ([], new_document))) |
|
257 |
| SOME (prev, id, _) => |
|
258 |
let |
|
259 |
val _ = cancel_old id; |
|
260 |
val prev_state_id = the (#state (the_entry new_entries (the prev))); |
|
261 |
val (_, updates) = fold_entries id (new_state name) new_document (prev_state_id, []); |
|
262 |
val new_document' = new_document |> map_entries (fold (set_entry_state o #1) updates); |
|
263 |
in (rev updates, new_document') end); |
|
264 |
||
265 |
val _ = define_document new_id new_document'; |
|
266 |
val _ = report_updates new_id (map #1 updates); |
|
267 |
val _ = List.app (fn (_, run) => run ()) updates; |
|
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in () end; |
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269 |
|
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end; |
271 |
||
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272 |
|
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273 |
|
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274 |
(** concrete syntax **) |
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|
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local structure P = OuterParse structure V = ValueParse in |
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277 |
|
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val _ = |
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OuterSyntax.internal_command "Isar.define_command" |
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280 |
(P.string -- P.string >> (fn (id, text) => |
32573 | 281 |
Toplevel.position (Position.id_only id) o |
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|
282 |
Toplevel.imperative (fn () => |
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283 |
define_command id (OuterSyntax.prepare_command (Position.id id) text)))); |
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|
284 |
|
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|
285 |
val _ = |
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|
286 |
OuterSyntax.internal_command "Isar.begin_document" |
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|
287 |
(P.string -- P.string >> (fn (id, path) => |
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|
288 |
Toplevel.imperative (fn () => begin_document id (Path.explode path)))); |
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changeset
|
289 |
|
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changeset
|
290 |
val _ = |
29468 | 291 |
OuterSyntax.internal_command "Isar.end_document" |
292 |
(P.string >> (fn id => Toplevel.imperative (fn () => end_document id))); |
|
293 |
||
294 |
val _ = |
|
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changeset
|
295 |
OuterSyntax.internal_command "Isar.edit_document" |
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changeset
|
296 |
(P.string -- P.string -- V.list (P.string -- (P.string >> SOME) || P.string >> rpair NONE) |
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|
297 |
>> (fn ((id, new_id), edits) => Toplevel.imperative (fn () => edit_document id new_id edits))); |
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changeset
|
298 |
|
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|
299 |
end; |
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|
300 |
|
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|
301 |
end; |
29467 | 302 |