author | wenzelm |
Sun, 12 Mar 2017 14:31:29 +0100 | |
changeset 65197 | 8fada74d82be |
parent 65196 | e8760a98db78 |
child 65206 | ff8c3c29a924 |
permissions | -rw-r--r-- |
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/* Title: Tools/VSCode/src/server.scala |
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Author: Makarius |
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Server for VS Code Language Server Protocol 2.0/3.0, see also |
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https://github.com/Microsoft/language-server-protocol |
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https://github.com/Microsoft/language-server-protocol/blob/master/protocol.md |
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PIDE protocol extensions depend on system option "vscode_pide_extensions". |
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*/ |
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package isabelle.vscode |
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import isabelle._ |
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import java.io.{PrintStream, OutputStream, File => JFile} |
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import scala.annotation.tailrec |
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object Server |
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{ |
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/* Isabelle tool wrapper */ |
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private lazy val default_logic = Isabelle_System.getenv("ISABELLE_LOGIC") |
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val isabelle_tool = Isabelle_Tool("vscode_server", "VSCode Language Server for PIDE", args => |
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{ |
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try { |
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var log_file: Option[Path] = None |
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var dirs: List[Path] = Nil |
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var logic = default_logic |
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var modes: List[String] = Nil |
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var options = Options.init() |
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var system_mode = false |
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val getopts = Getopts(""" |
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Usage: isabelle vscode_server [OPTIONS] |
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Options are: |
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-L FILE enable logging on FILE |
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-d DIR include session directory |
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-l NAME logic session name (default ISABELLE_LOGIC=""" + quote(default_logic) + """) |
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-m MODE add print mode for output |
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-o OPTION override Isabelle system OPTION (via NAME=VAL or NAME) |
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-s system build mode for session image |
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Run the VSCode Language Server protocol (JSON RPC) over stdin/stdout. |
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""", |
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"L:" -> (arg => log_file = Some(Path.explode(File.standard_path(arg)))), |
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"d:" -> (arg => dirs = dirs ::: List(Path.explode(File.standard_path(arg)))), |
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"l:" -> (arg => logic = arg), |
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"m:" -> (arg => modes = arg :: modes), |
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"o:" -> (arg => options = options + arg), |
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"s" -> (_ => system_mode = true)) |
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val more_args = getopts(args) |
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if (more_args.nonEmpty) getopts.usage() |
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val log = Logger.make(log_file) |
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val channel = new Channel(System.in, System.out, log) |
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val server = new Server(channel, options, logic, dirs, modes, system_mode, log) |
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// prevent spurious garbage on the main protocol channel |
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val orig_out = System.out |
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try { |
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System.setOut(new PrintStream(new OutputStream { def write(n: Int) {} })) |
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server.start() |
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} |
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finally { System.setOut(orig_out) } |
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} |
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catch { |
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case exn: Throwable => |
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val channel = new Channel(System.in, System.out, No_Logger) |
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channel.error_message(Exn.message(exn)) |
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throw(exn) |
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} |
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}) |
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} |
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class Server( |
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val channel: Channel, |
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options: Options, |
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session_name: String = Server.default_logic, |
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session_dirs: List[Path] = Nil, |
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modes: List[String] = Nil, |
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system_mode: Boolean = false, |
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log: Logger = No_Logger) |
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{ |
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/* prover session */ |
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private val session_ = Synchronized(None: Option[Session]) |
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def session: Session = session_.value getOrElse error("Server inactive") |
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def resources: VSCode_Resources = session.resources.asInstanceOf[VSCode_Resources] |
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def rendering_offset(node_pos: Line.Node_Position): Option[(VSCode_Rendering, Text.Offset)] = |
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for { |
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model <- resources.get_model(new JFile(node_pos.name)) |
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rendering = model.rendering() |
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offset <- model.content.doc.offset(node_pos.pos) |
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} yield (rendering, offset) |
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private val dynamic_output = Dynamic_Output(this) |
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/* input from client or file-system */ |
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private val delay_input: Standard_Thread.Delay = |
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Standard_Thread.delay_last(options.seconds("vscode_input_delay"), channel.Error_Logger) |
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{ resources.flush_input(session) } |
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private val delay_load: Standard_Thread.Delay = |
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Standard_Thread.delay_last(options.seconds("vscode_load_delay"), channel.Error_Logger) { |
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val (invoke_input, invoke_load) = resources.resolve_dependencies(session, file_watcher) |
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if (invoke_input) delay_input.invoke() |
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if (invoke_load) delay_load.invoke |
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} |
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private val file_watcher = |
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File_Watcher(sync_documents(_), options.seconds("vscode_load_delay")) |
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private def close_document(file: JFile) |
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{ |
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if (resources.close_model(file)) { |
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file_watcher.register_parent(file) |
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sync_documents(Set(file)) |
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delay_input.invoke() |
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delay_output.invoke() |
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} |
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} |
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private def sync_documents(changed: Set[JFile]) |
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{ |
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resources.sync_models(changed) |
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delay_input.invoke() |
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delay_output.invoke() |
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} |
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private def change_document(file: JFile, changes: List[Protocol.TextDocumentChange]) |
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{ |
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changes.reverse.foreach(change => |
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resources.change_model(session, file, change.text, change.range)) |
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delay_input.invoke() |
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delay_output.invoke() |
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} |
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/* caret handling */ |
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private val delay_caret_update: Standard_Thread.Delay = |
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Standard_Thread.delay_last(options.seconds("vscode_input_delay"), channel.Error_Logger) |
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{ session.caret_focus.post(Session.Caret_Focus) } |
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private def update_caret(caret: Option[(JFile, Line.Position)]) |
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{ |
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resources.update_caret(caret) |
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delay_caret_update.invoke() |
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} |
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/* output to client */ |
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private val delay_output: Standard_Thread.Delay = |
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Standard_Thread.delay_last(options.seconds("vscode_output_delay"), channel.Error_Logger) |
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{ |
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if (session.current_state().stable_tip_version.isEmpty) delay_output.invoke() |
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else resources.flush_output(channel) |
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} |
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private val prover_output = |
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Session.Consumer[Session.Commands_Changed](getClass.getName) { |
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case changed => |
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resources.update_output(changed.nodes.toList.map(resources.node_file(_))) |
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delay_output.invoke() |
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} |
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private val syslog = |
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Session.Consumer[Prover.Message](getClass.getName) { |
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case output: Prover.Output if output.is_syslog => |
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channel.log_writeln(resources.output_xml(output.message)) |
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case _ => |
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} |
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/* init and exit */ |
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def init(id: Protocol.Id) |
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{ |
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def reply(err: String) |
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{ |
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channel.write(Protocol.Initialize.reply(id, err)) |
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if (err == "") |
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channel.writeln("Welcome to Isabelle/" + session_name + " (" + Distribution.version + ")") |
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else channel.error_message(err) |
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} |
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val try_session = |
198 |
try { |
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if (!Build.build(options = options, build_heap = true, no_build = true, |
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system_mode = system_mode, dirs = session_dirs, sessions = List(session_name)).ok) |
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{ |
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val start_msg = "Build started for Isabelle/" + session_name + " ..." |
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val fail_msg = "Session build failed -- prover process remains inactive!" |
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val progress = channel.make_progress(verbose = true) |
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progress.echo(start_msg); channel.writeln(start_msg) |
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if (!Build.build(options = options, progress = progress, build_heap = true, |
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system_mode = system_mode, dirs = session_dirs, sessions = List(session_name)).ok) |
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{ |
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progress.echo(fail_msg); error(fail_msg) |
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} |
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} |
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val base = Build.session_base(options, false, session_dirs, session_name) |
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val resources = new VSCode_Resources(options, base, log) |
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{ |
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override def commit(change: Session.Change): Unit = |
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if (change.deps_changed || undefined_blobs(change.version.nodes).nonEmpty) |
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delay_load.invoke() |
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} |
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Some(new Session(resources) { |
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override def output_delay = options.seconds("editor_output_delay") |
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override def prune_delay = options.seconds("editor_prune_delay") |
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override def syslog_limit = options.int("editor_syslog_limit") |
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override def reparse_limit = options.int("editor_reparse_limit") |
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}) |
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} |
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catch { case ERROR(msg) => reply(msg); None } |
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for (session <- try_session) { |
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session_.change(_ => Some(session)) |
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var session_phase: Session.Consumer[Session.Phase] = null |
236 |
session_phase = |
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Session.Consumer(getClass.getName) { |
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case Session.Ready => |
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session.phase_changed -= session_phase |
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session.update_options(options) |
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reply("") |
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case Session.Failed => |
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session.phase_changed -= session_phase |
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reply("Prover startup failed") |
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case _ => |
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} |
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session.phase_changed += session_phase |
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session.commands_changed += prover_output |
250 |
session.all_messages += syslog |
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dynamic_output.init() |
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session.start(receiver => |
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Isabelle_Process(options = options, logic = session_name, dirs = session_dirs, |
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256 |
modes = modes, receiver = receiver)) |
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257 |
} |
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} |
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def shutdown(id: Protocol.Id) |
64605 | 261 |
{ |
64641 | 262 |
def reply(err: String): Unit = channel.write(Protocol.Shutdown.reply(id, err)) |
263 |
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64703 | 264 |
session_.change({ |
265 |
case Some(session) => |
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dynamic_output.exit() |
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var session_phase: Session.Consumer[Session.Phase] = null |
268 |
session_phase = |
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269 |
Session.Consumer(getClass.getName) { |
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270 |
case Session.Inactive => |
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271 |
session.phase_changed -= session_phase |
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session.commands_changed -= prover_output |
273 |
session.all_messages -= syslog |
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reply("") |
275 |
case _ => |
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276 |
} |
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277 |
session.phase_changed += session_phase |
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278 |
session.stop() |
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279 |
delay_input.revoke() |
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280 |
delay_output.revoke() |
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file_watcher.shutdown() |
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None |
283 |
case None => |
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284 |
reply("Prover inactive") |
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285 |
None |
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286 |
}) |
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64605 | 287 |
} |
288 |
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def exit() { |
64717 | 290 |
log("\n") |
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sys.exit(if (session_.value.isDefined) 1 else 0) |
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} |
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294 |
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/* completion */ |
296 |
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297 |
def completion(id: Protocol.Id, node_pos: Line.Node_Position) |
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298 |
{ |
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299 |
val result = |
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300 |
(for ((rendering, offset) <- rendering_offset(node_pos)) |
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301 |
yield rendering.completion(Text.Range(offset - 1, offset))) getOrElse Nil |
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channel.write(Protocol.Completion.reply(id, result)) |
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303 |
} |
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/* hover */ |
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64651 | 308 |
def hover(id: Protocol.Id, node_pos: Line.Node_Position) |
64641 | 309 |
{ |
310 |
val result = |
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311 |
for { |
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64651 | 312 |
(rendering, offset) <- rendering_offset(node_pos) |
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info <- rendering.tooltips(VSCode_Rendering.tooltip_elements, Text.Range(offset, offset + 1)) |
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} yield { |
65197 | 315 |
val range = rendering.model.content.doc.range(info.range) |
64748 | 316 |
val contents = |
65107 | 317 |
info.info.map(t => Protocol.MarkedString(resources.output_pretty_tooltip(List(t)))) |
64748 | 318 |
(range, contents) |
64641 | 319 |
} |
320 |
channel.write(Protocol.Hover.reply(id, result)) |
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321 |
} |
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/* goto definition */ |
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def goto_definition(id: Protocol.Id, node_pos: Line.Node_Position) |
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{ |
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328 |
val result = |
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(for ((rendering, offset) <- rendering_offset(node_pos)) |
64649 | 330 |
yield rendering.hyperlinks(Text.Range(offset, offset + 1))) getOrElse Nil |
64648
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changeset
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331 |
channel.write(Protocol.GotoDefinition.reply(id, result)) |
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basic support for hyperlinks / Goto Definition Request;
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parents:
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332 |
} |
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basic support for hyperlinks / Goto Definition Request;
wenzelm
parents:
64646
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333 |
|
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basic support for hyperlinks / Goto Definition Request;
wenzelm
parents:
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changeset
|
334 |
|
64767 | 335 |
/* document highlights */ |
336 |
||
337 |
def document_highlights(id: Protocol.Id, node_pos: Line.Node_Position) |
|
338 |
{ |
|
339 |
val result = |
|
340 |
(for ((rendering, offset) <- rendering_offset(node_pos)) |
|
341 |
yield { |
|
65197 | 342 |
val model = rendering.model |
343 |
rendering.caret_focus_ranges(Text.Range(offset, offset + 1), model.content.text_range) |
|
344 |
.map(r => Protocol.DocumentHighlight.text(model.content.doc.range(r))) |
|
64767 | 345 |
}) getOrElse Nil |
346 |
channel.write(Protocol.DocumentHighlights.reply(id, result)) |
|
347 |
} |
|
348 |
||
349 |
||
64605 | 350 |
/* main loop */ |
351 |
||
352 |
def start() |
|
353 |
{ |
|
64717 | 354 |
log("Server started " + Date.now()) |
64605 | 355 |
|
356 |
def handle(json: JSON.T) |
|
357 |
{ |
|
358 |
try { |
|
359 |
json match { |
|
64641 | 360 |
case Protocol.Initialize(id) => init(id) |
361 |
case Protocol.Shutdown(id) => shutdown(id) |
|
64645 | 362 |
case Protocol.Exit(()) => exit() |
65162 | 363 |
case Protocol.DidOpenTextDocument(file, _, _, text) => |
364 |
change_document(file, List(Protocol.TextDocumentChange(None, text))) |
|
65160 | 365 |
case Protocol.DidChangeTextDocument(file, _, changes) => change_document(file, changes) |
366 |
case Protocol.DidCloseTextDocument(file) => close_document(file) |
|
64877 | 367 |
case Protocol.Completion(id, node_pos) => completion(id, node_pos) |
64651 | 368 |
case Protocol.Hover(id, node_pos) => hover(id, node_pos) |
369 |
case Protocol.GotoDefinition(id, node_pos) => goto_definition(id, node_pos) |
|
64767 | 370 |
case Protocol.DocumentHighlights(id, node_pos) => document_highlights(id, node_pos) |
65189 | 371 |
case Protocol.Caret_Update(caret) => update_caret(caret) |
64717 | 372 |
case _ => log("### IGNORED") |
64605 | 373 |
} |
374 |
} |
|
64687 | 375 |
catch { case exn: Throwable => channel.log_error_message(Exn.message(exn)) } |
64605 | 376 |
} |
377 |
||
378 |
@tailrec def loop() |
|
379 |
{ |
|
380 |
channel.read() match { |
|
381 |
case Some(json) => |
|
382 |
json match { |
|
383 |
case bulk: List[_] => bulk.foreach(handle(_)) |
|
384 |
case _ => handle(json) |
|
385 |
} |
|
386 |
loop() |
|
64717 | 387 |
case None => log("### TERMINATE") |
64605 | 388 |
} |
389 |
} |
|
390 |
loop() |
|
391 |
} |
|
392 |
} |