diff --git a/src/Pure/PIDE/document.scala b/src/Pure/PIDE/document.scala --- a/src/Pure/PIDE/document.scala +++ b/src/Pure/PIDE/document.scala @@ -1,1236 +1,1218 @@ /* Title: Pure/PIDE/document.scala Author: Makarius Document as collection of named nodes, each consisting of an editable list of commands, associated with asynchronous execution process. */ package isabelle import scala.collection.mutable object Document { /** document structure **/ /* overlays -- print functions with arguments */ object Overlays { val empty = new Overlays(Map.empty) } final class Overlays private(rep: Map[Node.Name, Node.Overlays]) { def apply(name: Node.Name): Node.Overlays = rep.getOrElse(name, Node.Overlays.empty) private def update(name: Node.Name, f: Node.Overlays => Node.Overlays): Overlays = { val node_overlays = f(apply(name)) new Overlays(if (node_overlays.is_empty) rep - name else rep + (name -> node_overlays)) } def insert(command: Command, fn: String, args: List[String]): Overlays = update(command.node_name, _.insert(command, fn, args)) def remove(command: Command, fn: String, args: List[String]): Overlays = update(command.node_name, _.remove(command, fn, args)) override def toString: String = rep.mkString("Overlays(", ",", ")") } /* document blobs: auxiliary files */ sealed case class Blob(bytes: Bytes, source: String, chunk: Symbol.Text_Chunk, changed: Boolean) { def unchanged: Blob = copy(changed = false) } object Blobs { def apply(blobs: Map[Node.Name, Blob]): Blobs = new Blobs(blobs) val empty: Blobs = apply(Map.empty) } final class Blobs private(blobs: Map[Node.Name, Blob]) { def get(name: Node.Name): Option[Blob] = blobs.get(name) def changed(name: Node.Name): Boolean = get(name) match { case Some(blob) => blob.changed case None => false } override def toString: String = blobs.mkString("Blobs(", ",", ")") } /* document nodes: theories and auxiliary files */ type Edit[A, B] = (Node.Name, Node.Edit[A, B]) type Edit_Text = Edit[Text.Edit, Text.Perspective] type Edit_Command = Edit[Command.Edit, Command.Perspective] object Node { /* header and name */ sealed case class Header( imports_pos: List[(Name, Position.T)] = Nil, keywords: Thy_Header.Keywords = Nil, abbrevs: Thy_Header.Abbrevs = Nil, errors: List[String] = Nil ) { def imports: List[Name] = imports_pos.map(_._1) def append_errors(msgs: List[String]): Header = copy(errors = errors ::: msgs) def cat_errors(msg2: String): Header = copy(errors = errors.map(msg1 => Exn.cat_message(msg1, msg2))) } val no_header: Header = Header() def bad_header(msg: String): Header = Header(errors = List(msg)) object Name { val empty: Name = Name("") object Ordering extends scala.math.Ordering[Name] { def compare(name1: Name, name2: Name): Int = name1.node compare name2.node } type Graph[A] = isabelle.Graph[Node.Name, A] def make_graph[A](entries: List[((Name, A), List[Name])]): Graph[A] = Graph.make(entries, symmetric = true)(Ordering) } sealed case class Name(node: String, master_dir: String = "", theory: String = "") { override def hashCode: Int = node.hashCode override def equals(that: Any): Boolean = that match { case other: Name => node == other.node case _ => false } def path: Path = Path.explode(File.standard_path(node)) def master_dir_path: Path = Path.explode(File.standard_path(master_dir)) def expand: Name = Name(path.expand.implode, master_dir_path.expand.implode, theory) def symbolic: Name = Name(path.implode_symbolic, master_dir_path.implode_symbolic, theory) def is_theory: Boolean = theory.nonEmpty def theory_base_name: String = Long_Name.base_name(theory) override def toString: String = if (is_theory) theory else node def map(f: String => String): Name = copy(f(node), f(master_dir), theory) def map_theory(f: String => String): Name = copy(node, master_dir, f(theory)) def json: JSON.Object.T = JSON.Object("node_name" -> node, "theory_name" -> theory) } sealed case class Entry(name: Node.Name, header: Node.Header) { def map(f: String => String): Entry = copy(name = name.map(f)) override def toString: String = name.toString } /* node overlays */ object Overlays { val empty = new Overlays(Multi_Map.empty) } final class Overlays private(rep: Multi_Map[Command, (String, List[String])]) { def commands: Set[Command] = rep.keySet def is_empty: Boolean = rep.isEmpty def dest: List[(Command, (String, List[String]))] = rep.iterator.toList def insert(cmd: Command, fn: String, args: List[String]): Overlays = new Overlays(rep.insert(cmd, (fn, args))) def remove(cmd: Command, fn: String, args: List[String]): Overlays = new Overlays(rep.remove(cmd, (fn, args))) override def toString: String = rep.mkString("Node.Overlays(", ",", ")") } /* edits */ sealed abstract class Edit[A, B] { def foreach(f: A => Unit): Unit = { this match { case Edits(es) => es.foreach(f) case _ => } } def is_void: Boolean = this match { case Edits(Nil) => true case _ => false } } case class Blob[A, B](blob: Document.Blob) extends Edit[A, B] case class Edits[A, B](edits: List[A]) extends Edit[A, B] case class Deps[A, B](header: Header) extends Edit[A, B] case class Perspective[A, B](required: Boolean, visible: B, overlays: Overlays) extends Edit[A, B] /* perspective */ type Perspective_Text = Perspective[Text.Edit, Text.Perspective] type Perspective_Command = Perspective[Command.Edit, Command.Perspective] val no_perspective_text: Perspective_Text = Perspective(false, Text.Perspective.empty, Overlays.empty) val no_perspective_command: Perspective_Command = Perspective(false, Command.Perspective.empty, Overlays.empty) def is_no_perspective_text(perspective: Perspective_Text): Boolean = !perspective.required && perspective.visible.is_empty && perspective.overlays.is_empty def is_no_perspective_command(perspective: Perspective_Command): Boolean = !perspective.required && perspective.visible.is_empty && perspective.overlays.is_empty /* commands */ object Commands { def apply(commands: Linear_Set[Command]): Commands = new Commands(commands) val empty: Commands = apply(Linear_Set.empty) def starts( commands: Iterator[Command], offset: Text.Offset = 0 ) : Iterator[(Command, Text.Offset)] = { var i = offset for (command <- commands) yield { val start = i i += command.length (command, start) } } def starts_pos( commands: Iterator[Command], pos: Token.Pos = Token.Pos.start ) : Iterator[(Command, Token.Pos)] = { var p = pos for (command <- commands) yield { val start = p p = command.span.content.foldLeft(p)(_.advance(_)) (command, start) } } private val block_size = 256 } final class Commands private(val commands: Linear_Set[Command]) { lazy val load_commands: List[Command] = commands.iterator.filter(cmd => cmd.blobs.nonEmpty).toList private lazy val full_index: (Array[(Command, Text.Offset)], Text.Range) = { val blocks = new mutable.ListBuffer[(Command, Text.Offset)] var next_block = 0 var last_stop = 0 for ((command, start) <- Commands.starts(commands.iterator)) { last_stop = start + command.length while (last_stop + 1 > next_block) { blocks += (command -> start) next_block += Commands.block_size } } (blocks.toArray, Text.Range(0, last_stop)) } private def full_range: Text.Range = full_index._2 def iterator(i: Text.Offset = 0): Iterator[(Command, Text.Offset)] = { if (commands.nonEmpty && full_range.contains(i)) { val (cmd0, start0) = full_index._1(i / Commands.block_size) Node.Commands.starts(commands.iterator(cmd0), start0) dropWhile { case (cmd, start) => start + cmd.length <= i } } else Iterator.empty } } val empty: Node = new Node() } final class Node private( val get_blob: Option[Document.Blob] = None, val header: Node.Header = Node.no_header, val syntax: Option[Outer_Syntax] = None, val text_perspective: Text.Perspective = Text.Perspective.empty, val perspective: Node.Perspective_Command = Node.no_perspective_command, _commands: Node.Commands = Node.Commands.empty ) { def is_empty: Boolean = get_blob.isEmpty && header == Node.no_header && text_perspective.is_empty && Node.is_no_perspective_command(perspective) && commands.isEmpty def has_header: Boolean = header != Node.no_header override def toString: String = if (is_empty) "empty" else if (get_blob.isDefined) "blob" else "node" def commands: Linear_Set[Command] = _commands.commands def load_commands: List[Command] = _commands.load_commands def load_commands_changed(doc_blobs: Blobs): Boolean = load_commands.exists(_.blobs_changed(doc_blobs)) def init_blob(blob: Blob): Node = new Node(get_blob = Some(blob.unchanged)) def update_header(new_header: Node.Header): Node = new Node(get_blob, new_header, syntax, text_perspective, perspective, _commands) def update_syntax(new_syntax: Option[Outer_Syntax]): Node = new Node(get_blob, header, new_syntax, text_perspective, perspective, _commands) def update_perspective( new_text_perspective: Text.Perspective, new_perspective: Node.Perspective_Command): Node = new Node(get_blob, header, syntax, new_text_perspective, new_perspective, _commands) def edit_perspective: Node.Edit[Text.Edit, Text.Perspective] = Node.Perspective(perspective.required, text_perspective, perspective.overlays) def same_perspective( other_text_perspective: Text.Perspective, other_perspective: Node.Perspective_Command): Boolean = text_perspective == other_text_perspective && perspective.required == other_perspective.required && perspective.visible.same(other_perspective.visible) && perspective.overlays == other_perspective.overlays def update_commands(new_commands: Linear_Set[Command]): Node = if (new_commands eq _commands.commands) this else new Node(get_blob, header, syntax, text_perspective, perspective, Node.Commands(new_commands)) def command_iterator(i: Text.Offset = 0): Iterator[(Command, Text.Offset)] = _commands.iterator(i) def command_iterator(range: Text.Range): Iterator[(Command, Text.Offset)] = command_iterator(range.start) takeWhile { case (_, start) => start < range.stop } def command_start(cmd: Command): Option[Text.Offset] = Node.Commands.starts(commands.iterator).find(_._1 == cmd).map(_._2) def source: String = get_blob match { case Some(blob) => blob.source case None => command_iterator().map({ case (cmd, _) => cmd.source }).mkString } } /* development graph */ object Nodes { val empty: Nodes = new Nodes(Graph.empty(Node.Name.Ordering)) } final class Nodes private(graph: Graph[Node.Name, Node]) { def apply(name: Node.Name): Node = graph.default_node(name, Node.empty).get_node(name) def is_suppressed(name: Node.Name): Boolean = { val graph1 = graph.default_node(name, Node.empty) graph1.is_maximal(name) && graph1.get_node(name).is_empty } def purge_suppressed: Option[Nodes] = graph.keys_iterator.filter(is_suppressed).toList match { case Nil => None case del => Some(new Nodes(del.foldLeft(graph)(_.del_node(_)))) } def + (entry: (Node.Name, Node)): Nodes = { val (name, node) = entry val imports = node.header.imports val graph1 = imports.foldLeft(graph.default_node(name, Node.empty)) { case (g, p) => g.default_node(p, Node.empty) } val graph2 = graph1.imm_preds(name).foldLeft(graph1) { case (g, dep) => g.del_edge(dep, name) } val graph3 = imports.foldLeft(graph2) { case (g, dep) => g.add_edge(dep, name) } new Nodes(graph3.map_node(name, _ => node)) } def domain: Set[Node.Name] = graph.domain def iterator: Iterator[(Node.Name, Node)] = graph.iterator.map({ case (name, (node, _)) => (name, node) }) def theory_name(theory: String): Option[Node.Name] = graph.keys_iterator.find(name => name.theory == theory) def commands_loading(file_name: Node.Name): List[Command] = (for { (_, node) <- iterator cmd <- node.load_commands.iterator name <- cmd.blobs_names.iterator if name == file_name } yield cmd).toList def descendants(names: List[Node.Name]): List[Node.Name] = graph.all_succs(names) def requirements(names: List[Node.Name]): List[Node.Name] = graph.all_preds_rev(names) def topological_order: List[Node.Name] = graph.topological_order override def toString: String = topological_order.mkString("Nodes(", ",", ")") } /** versioning **/ /* particular document versions */ object Version { val init: Version = new Version() def make(nodes: Nodes): Version = new Version(Document_ID.make(), nodes) def purge_future( versions: Map[Document_ID.Version, Version], future: Future[Version] ) : Future[Version] = { if (future.is_finished) { val version = future.join versions.get(version.id) match { case Some(version1) if !(version eq version1) => Future.value(version1) case _ => future } } else future } def purge_suppressed( versions: Map[Document_ID.Version, Version] ): Map[Document_ID.Version, Version] = { (for ((id, v) <- versions.iterator; v1 <- v.purge_suppressed) yield (id, v1)). foldLeft(versions)(_ + _) } } final class Version private( val id: Document_ID.Version = Document_ID.none, val nodes: Nodes = Nodes.empty ) { override def toString: String = "Version(" + id + ")" def purge_suppressed: Option[Version] = nodes.purge_suppressed.map(new Version(id, _)) } /* changes of plain text, eventually resulting in document edits */ object Change { val init: Change = new Change() def make(previous: Future[Version], edits: List[Edit_Text], version: Future[Version]): Change = new Change(Some(previous), edits.reverse, version) } final class Change private( val previous: Option[Future[Version]] = Some(Future.value(Version.init)), val rev_edits: List[Edit_Text] = Nil, val version: Future[Version] = Future.value(Version.init) ) { def is_finished: Boolean = (previous match { case None => true case Some(future) => future.is_finished }) && version.is_finished def truncate: Change = new Change(None, Nil, version) def purge(versions: Map[Document_ID.Version, Version]): Option[Change] = { val previous1 = previous.map(Version.purge_future(versions, _)) val version1 = Version.purge_future(versions, version) if ((previous eq previous1) && (version eq version1)) None else Some(new Change(previous1, rev_edits, version1)) } } /* history navigation */ object History { val init: History = new History() } final class History private( val undo_list: List[Change] = List(Change.init) // non-empty list ) { override def toString: String = "History(" + undo_list.length + ")" def tip: Change = undo_list.head def + (change: Change): History = new History(change :: undo_list) def prune(check: Change => Boolean, retain: Int): Option[(List[Change], History)] = { val n = undo_list.iterator.zipWithIndex.find(p => check(p._1)).get._2 + 1 val (retained, dropped) = undo_list.splitAt(n max retain) retained.splitAt(retained.length - 1) match { case (prefix, List(last)) => Some(dropped, new History(prefix ::: List(last.truncate))) case _ => None } } def purge(versions: Map[Document_ID.Version, Version]): History = { val undo_list1 = undo_list.map(_.purge(versions)) if (undo_list1.forall(_.isEmpty)) this else new History(for ((a, b) <- undo_list1 zip undo_list) yield a.getOrElse(b)) } } /* snapshot: persistent user-view of document state */ object Snapshot { val init: Snapshot = State.init.snapshot() } class Snapshot private[Document]( val state: State, val version: Version, val node_name: Node.Name, edits: List[Text.Edit], val snippet_command: Option[Command] ) { override def toString: String = "Snapshot(node = " + node_name.node + ", version = " + version.id + (if (is_outdated) ", outdated" else "") + ")" /* nodes */ def get_node(name: Node.Name): Node = version.nodes(name) val node: Node = get_node(node_name) def node_files: List[Node.Name] = node_name :: node.load_commands.flatMap(_.blobs_names) /* edits */ def is_outdated: Boolean = edits.nonEmpty private lazy val reverse_edits = edits.reverse def convert(offset: Text.Offset): Text.Offset = edits.foldLeft(offset) { case (i, edit) => edit.convert(i) } def revert(offset: Text.Offset): Text.Offset = reverse_edits.foldLeft(offset) { case (i, edit) => edit.revert(i) } def convert(range: Text.Range): Text.Range = range.map(convert) def revert(range: Text.Range): Text.Range = range.map(revert) /* theory load commands */ val commands_loading: List[Command] = if (node_name.is_theory) Nil else version.nodes.commands_loading(node_name) def commands_loading_ranges(pred: Node.Name => Boolean): List[Text.Range] = (for { cmd <- node.load_commands.iterator blob_name <- cmd.blobs_names.iterator if pred(blob_name) start <- node.command_start(cmd) } yield convert(cmd.core_range + start)).toList /* command as add-on snippet */ def snippet(command: Command): Snapshot = { val node_name = command.node_name val nodes0 = version.nodes val nodes1 = nodes0 + (node_name -> nodes0(node_name).update_commands(Linear_Set(command))) val version1 = Document.Version.make(nodes1) val edits: List[Edit_Text] = List(node_name -> Node.Edits(List(Text.Edit.insert(0, command.source)))) val state0 = state.define_command(command) val state1 = state0.continue_history(Future.value(version), edits, Future.value(version1)) .define_version(version1, state0.the_assignment(version)) .assign(version1.id, Nil, List(command.id -> List(Document_ID.make())))._2 state1.snapshot(node_name = node_name, snippet_command = Some(command)) } /* XML markup */ def xml_markup( range: Text.Range = Text.Range.full, elements: Markup.Elements = Markup.Elements.full): XML.Body = state.xml_markup(version, node_name, range = range, elements = elements) def xml_markup_blobs( elements: Markup.Elements = Markup.Elements.full ) : List[(Path, XML.Body)] = { snippet_command match { case None => Nil case Some(command) => for (Exn.Res(blob) <- command.blobs) yield { val bytes = blob.read_file val text = bytes.text val xml = if (Bytes(text) == bytes) { val markup = command.init_markups(Command.Markup_Index.blob(blob)) markup.to_XML(Text.Range(0, text.length), text, elements) } else Nil blob.src_path -> xml } } } /* messages */ lazy val messages: List[(XML.Elem, Position.T)] = (for { (command, start) <- Document.Node.Commands.starts_pos( node.commands.iterator, Token.Pos.file(node_name.node)) pos = command.span.keyword_pos(start).position(command.span.name) (_, elem) <- state.command_results(version, command).iterator } yield (elem, pos)).toList /* exports */ lazy val exports: List[Export.Entry] = state.node_exports(version, node_name).iterator.map(_._2).toList lazy val all_exports: Map[Export.Entry_Name, Export.Entry] = (for { (name, _) <- version.nodes.iterator (_, entry) <- state.node_exports(version, name).iterator if entry.entry_name.session == Sessions.DRAFT } yield entry.entry_name -> entry).toMap /* find command */ def find_command(id: Document_ID.Generic): Option[(Node, Command)] = state.lookup_id(id) match { case None => None case Some(st) => val command = st.command val command_node = get_node(command.node_name) if (command_node.commands.contains(command)) Some((command_node, command)) else None } def find_command_position(id: Document_ID.Generic, offset: Symbol.Offset) : Option[Line.Node_Position] = for ((node, command) <- find_command(id)) yield { val name = command.node_name.node val sources_iterator = node.commands.iterator.takeWhile(_ != command).map(_.source) ++ (if (offset == 0) Iterator.empty else Iterator.single(command.source(Text.Range(0, command.chunk.decode(offset))))) val pos = sources_iterator.foldLeft(Line.Position.zero)(_.advance(_)) Line.Node_Position(name, pos) } def current_command(other_node_name: Node.Name, offset: Text.Offset): Option[Command] = if (other_node_name.is_theory) { val other_node = get_node(other_node_name) val iterator = other_node.command_iterator(revert(offset) max 0) if (iterator.hasNext) { val (command0, _) = iterator.next() other_node.commands.reverse.iterator(command0).find(command => !command.is_ignored) } else other_node.commands.reverse.iterator.find(command => !command.is_ignored) } else version.nodes.commands_loading(other_node_name).headOption /* command results */ def command_results(range: Text.Range): Command.Results = Command.State.merge_results( select[List[Command.State]](range, Markup.Elements.full, command_states => _ => Some(command_states)).flatMap(_.info)) def command_results(command: Command): Command.Results = state.command_results(version, command) - /* command ids: static and dynamic */ - - def command_id_map: Map[Document_ID.Generic, Command] = - state.command_id_map(version, get_node(node_name).commands) - - /* cumulate markup */ def cumulate[A]( range: Text.Range, info: A, elements: Markup.Elements, result: List[Command.State] => (A, Text.Markup) => Option[A], status: Boolean = false ): List[Text.Info[A]] = { val former_range = revert(range).inflate_singularity val (chunk_name, command_iterator) = commands_loading.headOption match { case None => (Symbol.Text_Chunk.Default, node.command_iterator(former_range)) case Some(command) => (Symbol.Text_Chunk.File(node_name.node), Iterator((command, 0))) } val markup_index = Command.Markup_Index(status, chunk_name) (for { (command, command_start) <- command_iterator chunk <- command.chunks.get(chunk_name).iterator states = state.command_states(version, command) res = result(states) markup_range <- (former_range - command_start).try_restrict(chunk.range).iterator markup = Command.State.merge_markup(states, markup_index, markup_range, elements) Text.Info(r0, a) <- markup.cumulate[A](markup_range, info, elements, { case (a, Text.Info(r0, b)) => res(a, Text.Info(convert(r0 + command_start), b)) }).iterator r1 <- convert(r0 + command_start).try_restrict(range).iterator } yield Text.Info(r1, a)).toList } def select[A]( range: Text.Range, elements: Markup.Elements, result: List[Command.State] => Text.Markup => Option[A], status: Boolean = false ): List[Text.Info[A]] = { def result1(states: List[Command.State]): (Option[A], Text.Markup) => Option[Option[A]] = { val res = result(states) (_: Option[A], x: Text.Markup) => res(x) match { case None => None case some => Some(some) } } for (Text.Info(r, Some(x)) <- cumulate(range, None, elements, result1, status)) yield Text.Info(r, x) } } /* model */ trait Session { def resources: Resources } trait Model { def session: Session def is_stable: Boolean def snapshot(): Snapshot def node_name: Node.Name def is_theory: Boolean = node_name.is_theory override def toString: String = node_name.toString def get_text(range: Text.Range): Option[String] def node_required: Boolean def get_blob: Option[Blob] def bibtex_entries: List[Text.Info[String]] def node_edits( node_header: Node.Header, text_edits: List[Text.Edit], perspective: Node.Perspective_Text ): List[Edit_Text] = { val edits: List[Node.Edit[Text.Edit, Text.Perspective]] = get_blob match { case None => List( Node.Deps( if (session.resources.session_base.loaded_theory(node_name)) { node_header.append_errors( List("Cannot update finished theory " + quote(node_name.theory))) } else node_header), Node.Edits(text_edits), perspective) case Some(blob) => List(Node.Blob(blob), Node.Edits(text_edits)) } edits.flatMap(edit => if (edit.is_void) None else Some(node_name -> edit)) } } /** global state -- document structure, execution process, editing history **/ type Assign_Update = List[(Document_ID.Command, List[Document_ID.Exec])] // update of exec state assignment object State { class Fail(state: State) extends Exception object Assignment { val init: Assignment = new Assignment() } final class Assignment private( val command_execs: Map[Document_ID.Command, List[Document_ID.Exec]] = Map.empty, val is_finished: Boolean = false ) { override def toString: String = "Assignment(" + command_execs.size + "," + is_finished + ")" def check_finished: Assignment = { require(is_finished, "assignment not finished"); this } def unfinished: Assignment = new Assignment(command_execs, false) def assign(update: Assign_Update): Assignment = { require(!is_finished, "assignment already finished") val command_execs1 = update.foldLeft(command_execs) { case (res, (command_id, exec_ids)) => if (exec_ids.isEmpty) res - command_id else res + (command_id -> exec_ids) } new Assignment(command_execs1, true) } } val init: State = State().define_version(Version.init, Assignment.init).assign(Version.init.id, Nil, Nil)._2 } final case class State private( /*reachable versions*/ versions: Map[Document_ID.Version, Version] = Map.empty, /*inlined auxiliary files*/ blobs: Set[SHA1.Digest] = Set.empty, /*loaded theories in batch builds*/ theories: Map[Document_ID.Exec, Command.State] = Map.empty, /*static markup from define_command*/ commands: Map[Document_ID.Command, Command.State] = Map.empty, /*dynamic markup from execution*/ execs: Map[Document_ID.Exec, Command.State] = Map.empty, /*command-exec assignment for each version*/ assignments: Map[Document_ID.Version, State.Assignment] = Map.empty, /*commands with markup produced by other commands (imm_succs)*/ commands_redirection: Graph[Document_ID.Command, Unit] = Graph.long, /*explicit (linear) history*/ history: History = History.init, /*intermediate state between remove_versions/removed_versions*/ removing_versions: Boolean = false ) { override def toString: String = "State(versions = " + versions.size + ", blobs = " + blobs.size + ", commands = " + commands.size + ", execs = " + execs.size + ", assignments = " + assignments.size + ", commands_redirection = " + commands_redirection.size + ", history = " + history.undo_list.size + ", removing_versions = " + removing_versions + ")" private def fail[A]: A = throw new State.Fail(this) def define_version(version: Version, assignment: State.Assignment): State = { val id = version.id copy(versions = versions + (id -> version), assignments = assignments + (id -> assignment.unfinished)) } def define_blob(digest: SHA1.Digest): State = copy(blobs = blobs + digest) def defined_blob(digest: SHA1.Digest): Boolean = blobs.contains(digest) def define_command(command: Command): State = { val id = command.id if (commands.isDefinedAt(id)) fail else copy(commands = commands + (id -> command.init_state)) } def defined_command(id: Document_ID.Command): Boolean = commands.isDefinedAt(id) def the_version(id: Document_ID.Version): Version = versions.getOrElse(id, fail) def the_static_state(id: Document_ID.Command): Command.State = commands.getOrElse(id, fail) def the_dynamic_state(id: Document_ID.Exec): Command.State = execs.getOrElse(id, fail) def the_assignment(version: Version): State.Assignment = assignments.getOrElse(version.id, fail) def lookup_id(id: Document_ID.Generic): Option[Command.State] = theories.get(id) orElse commands.get(id) orElse execs.get(id) private def self_id(st: Command.State)(id: Document_ID.Generic): Boolean = id == st.command.id || (execs.get(id) match { case Some(st1) => st1.command.id == st.command.id case None => false }) private def other_id( node_name: Node.Name, id: Document_ID.Generic ) : Option[(Symbol.Text_Chunk.Id, Symbol.Text_Chunk)] = { for { st <- lookup_id(id) if st.command.node_name == node_name } yield (Symbol.Text_Chunk.Id(st.command.id), st.command.chunk) } private def redirection(st: Command.State): Graph[Document_ID.Command, Unit] = st.markups.redirection_iterator.foldLeft(commands_redirection) { case (graph, id) => graph.default_node(id, ()).default_node(st.command.id, ()).add_edge(id, st.command.id) } def accumulate( id: Document_ID.Generic, message: XML.Elem, cache: XML.Cache ) : (Command.State, State) = { def update(st: Command.State): (Command.State, State) = { val st1 = st.accumulate(self_id(st), other_id, message, cache) (st1, copy(commands_redirection = redirection(st1))) } execs.get(id).map(update) match { case Some((st1, state1)) => (st1, state1.copy(execs = execs + (id -> st1))) case None => commands.get(id).map(update) match { case Some((st1, state1)) => (st1, state1.copy(commands = commands + (id -> st1))) case None => theories.get(id).map(update) match { case Some((st1, state1)) => (st1, state1.copy(theories = theories + (id -> st1))) case None => fail } } } } def add_export( id: Document_ID.Generic, entry: Command.Exports.Entry ): (Command.State, State) = { execs.get(id) match { case Some(st) => st.add_export(entry) match { case Some(new_st) => (new_st, copy(execs = execs + (id -> new_st))) case None => fail } case None => commands.get(id) match { case Some(st) => st.add_export(entry) match { case Some(new_st) => (new_st, copy(commands = commands + (id -> new_st))) case None => fail } case None => fail } } } def node_exports(version: Version, node_name: Node.Name): Command.Exports = Command.Exports.merge( for { command <- version.nodes(node_name).commands.iterator st <- command_states(version, command).iterator } yield st.exports) def begin_theory( node_name: Node.Name, id: Document_ID.Exec, source: String, blobs_info: Command.Blobs_Info ): State = { if (theories.isDefinedAt(id)) fail else { val command = Command.unparsed(source, theory = true, id = id, node_name = node_name, blobs_info = blobs_info) copy(theories = theories + (id -> command.empty_state)) } } def end_theory(id: Document_ID.Exec): (Snapshot, State) = theories.get(id) match { case None => fail case Some(st) => val command = st.command val node_name = command.node_name val command1 = Command.unparsed(command.source, theory = true, id = id, node_name = node_name, blobs_info = command.blobs_info, results = st.results, markups = st.markups) val state1 = copy(theories = theories - id) (state1.snippet(command1), state1) } def assign( id: Document_ID.Version, edited: List[String], update: Assign_Update ) : ((List[Node.Name], List[Command]), State) = { val version = the_version(id) val edited_set = edited.toSet val edited_nodes = (for { (name, _) <- version.nodes.iterator if edited_set(name.node) } yield name).toList def upd(exec_id: Document_ID.Exec, st: Command.State) : Option[(Document_ID.Exec, Command.State)] = if (execs.isDefinedAt(exec_id)) None else Some(exec_id -> st) val (changed_commands, new_execs) = update.foldLeft((List.empty[Command], execs)) { case ((commands1, execs1), (command_id, exec)) => val st = the_static_state(command_id) val command = st.command val commands2 = command :: commands1 val execs2 = exec match { case Nil => execs1 case eval_id :: print_ids => execs1 ++ upd(eval_id, st) ++ (for (id <- print_ids; up <- upd(id, command.empty_state)) yield up) } (commands2, execs2) } val new_assignment = the_assignment(version).assign(update) val new_state = copy(assignments = assignments + (id -> new_assignment), execs = new_execs) ((edited_nodes, changed_commands), new_state) } def is_assigned(version: Version): Boolean = assignments.get(version.id) match { case Some(assgn) => assgn.is_finished case None => false } def is_stable(change: Change): Boolean = change.is_finished && is_assigned(change.version.get_finished) def recent_finished: Change = history.undo_list.find(_.is_finished) getOrElse fail def recent_stable: Change = history.undo_list.find(is_stable) getOrElse fail def stable_tip_version: Option[Version] = if (is_stable(history.tip)) Some(history.tip.version.get_finished) else None def continue_history( previous: Future[Version], edits: List[Edit_Text], version: Future[Version] ): State = { val change = Change.make(previous, edits, version) copy(history = history + change) } def remove_versions(retain: Int = 0): (List[Version], State) = { history.prune(is_stable, retain) match { case Some((dropped, history1)) => val old_versions = dropped.map(change => change.version.get_finished) val removing = old_versions.nonEmpty val state1 = copy(history = history1, removing_versions = removing) (old_versions, state1) case None => fail } } def removed_versions(removed: List[Document_ID.Version]): State = { val versions1 = Version.purge_suppressed(versions -- removed) val assignments1 = assignments -- removed var blobs1_names = Set.empty[Node.Name] var blobs1 = Set.empty[SHA1.Digest] var commands1 = Map.empty[Document_ID.Command, Command.State] var execs1 = Map.empty[Document_ID.Exec, Command.State] for { (version_id, version) <- versions1.iterator command_execs = assignments1(version_id).command_execs (_, node) <- version.nodes.iterator command <- node.commands.iterator } { for ((name, digest) <- command.blobs_defined) { blobs1_names += name blobs1 += digest } if (!commands1.isDefinedAt(command.id)) commands.get(command.id).foreach(st => commands1 += (command.id -> st)) for (exec_id <- command_execs.getOrElse(command.id, Nil)) { if (!execs1.isDefinedAt(exec_id)) execs.get(exec_id).foreach(st => execs1 += (exec_id -> st)) } } copy( versions = versions1, blobs = blobs1, commands = commands1, execs = execs1, commands_redirection = commands_redirection.restrict(commands1.keySet), assignments = assignments1, history = history.purge(versions1), removing_versions = false) } - def command_id_map( - version: Version, - commands: Iterable[Command] - ) : Map[Document_ID.Generic, Command] = { - require(is_assigned(version), "version not assigned (command_id_map)") - val assignment = the_assignment(version).check_finished - (for { - command <- commands.iterator - id <- (command.id :: assignment.command_execs.getOrElse(command.id, Nil)).iterator - } yield id -> command).toMap - } - def command_maybe_consolidated(version: Version, command: Command): Boolean = { require(is_assigned(version), "version not assigned (command_maybe_consolidated)") try { the_assignment(version).check_finished.command_execs.getOrElse(command.id, Nil) match { case eval_id :: print_ids => the_dynamic_state(eval_id).maybe_consolidated && !print_ids.exists(print_id => the_dynamic_state(print_id).consolidating) case Nil => false } } catch { case _: State.Fail => false } } private def command_states_self( version: Version, command: Command ) : List[(Document_ID.Generic, Command.State)] = { require(is_assigned(version), "version not assigned (command_states_self)") try { the_assignment(version).check_finished.command_execs.getOrElse(command.id, Nil) .map(id => id -> the_dynamic_state(id)) match { case Nil => fail case res => res } } catch { case _: State.Fail => try { List(command.id -> the_static_state(command.id)) } catch { case _: State.Fail => List(command.id -> command.init_state) } } } def command_states(version: Version, command: Command): List[Command.State] = { val self = command_states_self(version, command) val others = if (commands_redirection.defined(command.id)) { (for { command_id <- commands_redirection.imm_succs(command.id).iterator (id, st) <- command_states_self(version, the_static_state(command_id).command) if !self.exists(_._1 == id) } yield (id, st)).toMap.valuesIterator.toList } else Nil self.map(_._2) ::: others.flatMap(_.redirect(command)) } def command_results(version: Version, command: Command): Command.Results = Command.State.merge_results(command_states(version, command)) def command_markup(version: Version, command: Command, index: Command.Markup_Index, range: Text.Range, elements: Markup.Elements): Markup_Tree = Command.State.merge_markup(command_states(version, command), index, range, elements) def xml_markup( version: Version, node_name: Node.Name, range: Text.Range = Text.Range.full, elements: Markup.Elements = Markup.Elements.full ): XML.Body = { val node = version.nodes(node_name) if (node_name.is_theory) { val markup_index = Command.Markup_Index.markup (for { command <- node.commands.iterator command_range <- command.range.try_restrict(range).iterator markup = command_markup(version, command, markup_index, command_range, elements) tree <- markup.to_XML(command_range, command.source, elements).iterator } yield tree).toList } else { val node_source = node.source Text.Range(0, node_source.length).try_restrict(range) match { case None => Nil case Some(node_range) => val markup = version.nodes.commands_loading(node_name).headOption match { case None => Markup_Tree.empty case Some(command) => val chunk_name = Symbol.Text_Chunk.File(node_name.node) val markup_index = Command.Markup_Index(false, chunk_name) command_markup(version, command, markup_index, node_range, elements) } markup.to_XML(node_range, node_source, elements) } } } def node_initialized(version: Version, name: Node.Name): Boolean = name.is_theory && (version.nodes(name).commands.iterator.find(_.potentially_initialized) match { case None => false case Some(command) => command_states(version, command).headOption.exists(_.initialized) }) def node_maybe_consolidated(version: Version, name: Node.Name): Boolean = name.is_theory && version.nodes(name).commands.reverse.iterator.forall(command_maybe_consolidated(version, _)) def node_consolidated(version: Version, name: Node.Name): Boolean = !name.is_theory || { val it = version.nodes(name).commands.reverse.iterator it.hasNext && command_states(version, it.next()).exists(_.consolidated) } def snapshot( node_name: Node.Name = Node.Name.empty, pending_edits: List[Text.Edit] = Nil, snippet_command: Option[Command] = None ): Snapshot = { val stable = recent_stable val version = stable.version.get_finished val rev_pending_changes = for { change <- history.undo_list.takeWhile(_ != stable) (name, edits) <- change.rev_edits if name == node_name } yield edits val edits = rev_pending_changes.foldLeft(pending_edits) { case (edits, Node.Edits(es)) => es ::: edits case (edits, _) => edits } new Snapshot(this, version, node_name, edits, snippet_command) } def snippet(command: Command): Snapshot = snapshot().snippet(command) } }