author | wenzelm |
Tue, 21 Jun 2022 23:27:26 +0200 | |
changeset 75579 | 3362b6a5d697 |
parent 75444 | 331f96a67924 |
child 75586 | b2b097624e4c |
permissions | -rw-r--r-- |
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/* Title: Pure/System/scala.scala |
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Author: Makarius |
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Support for Scala at runtime. |
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*/ |
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package isabelle |
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import java.io.{File => JFile, StringWriter, PrintWriter} |
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import scala.tools.nsc.{GenericRunnerSettings, ConsoleWriter, NewLinePrintWriter} |
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import scala.tools.nsc.interpreter.{IMain, Results} |
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import scala.tools.nsc.interpreter.shell.ReplReporterImpl |
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object Scala { |
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/** registered functions **/ |
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abstract class Fun(val name: String, val thread: Boolean = false) { |
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override def toString: String = name |
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def multi: Boolean = true |
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def position: Properties.T = here.position |
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def here: Scala_Project.Here |
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def invoke(args: List[Bytes]): List[Bytes] |
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} |
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abstract class Fun_Strings(name: String, thread: Boolean = false) |
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extends Fun(name, thread = thread) { |
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override def invoke(args: List[Bytes]): List[Bytes] = |
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apply(args.map(_.text)).map(Bytes.apply) |
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def apply(args: List[String]): List[String] |
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} |
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abstract class Fun_String(name: String, thread: Boolean = false) |
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extends Fun_Strings(name, thread = thread) { |
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override def multi: Boolean = false |
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override def apply(args: List[String]): List[String] = |
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List(apply(Library.the_single(args))) |
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def apply(arg: String): String |
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} |
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class Functions(val functions: Fun*) extends Isabelle_System.Service |
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lazy val functions: List[Fun] = |
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Isabelle_System.make_services(classOf[Functions]).flatMap(_.functions) |
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/** demo functions **/ |
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object Echo extends Fun_String("echo") { |
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val here = Scala_Project.here |
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def apply(arg: String): String = arg |
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} |
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object Sleep extends Fun_String("sleep") { |
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val here = Scala_Project.here |
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def apply(seconds: String): String = { |
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val t = |
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seconds match { |
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case Value.Double(s) => Time.seconds(s) |
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case _ => error("Malformed argument: " + quote(seconds)) |
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} |
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val t0 = Time.now() |
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t.sleep() |
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val t1 = Time.now() |
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(t1 - t0).toString |
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} |
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} |
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/** compiler **/ |
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def class_path(): List[String] = |
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for { |
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prop <- List("isabelle.scala.classpath", "java.class.path") |
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elems = System.getProperty(prop, "") if elems.nonEmpty |
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elem <- space_explode(JFile.pathSeparatorChar, elems) if elem.nonEmpty |
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} yield elem |
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object Compiler { |
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def default_print_writer: PrintWriter = |
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new NewLinePrintWriter(new ConsoleWriter, true) |
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def context( |
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print_writer: PrintWriter = default_print_writer, |
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error: String => Unit = Exn.error, |
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jar_dirs: List[JFile] = Nil, |
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class_loader: Option[ClassLoader] = None |
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): Context = { |
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def find_jars(dir: JFile): List[String] = |
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File.find_files(dir, file => file.getName.endsWith(".jar")). |
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map(File.absolute_name) |
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val settings = new GenericRunnerSettings(error) |
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settings.classpath.value = |
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(class_path() ::: jar_dirs.flatMap(find_jars)).mkString(JFile.pathSeparator) |
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new Context(settings, print_writer, class_loader) |
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} |
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class Context private [Compiler]( |
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val settings: GenericRunnerSettings, |
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val print_writer: PrintWriter, |
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val class_loader: Option[ClassLoader] |
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) { |
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override def toString: String = settings.toString |
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val interp: IMain = |
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new IMain(settings, new ReplReporterImpl(settings, print_writer)) { |
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override def parentClassLoader: ClassLoader = |
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class_loader getOrElse super.parentClassLoader |
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} |
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} |
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def toplevel(interpret: Boolean, source: String): List[String] = { |
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val out = new StringWriter |
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val interp = Compiler.context(print_writer = new PrintWriter(out)).interp |
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val marker = '\u000b' |
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val ok = |
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interp.withLabel(marker.toString) { |
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if (interpret) interp.interpret(source) == Results.Success |
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else (new interp.ReadEvalPrint).compile(source) |
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} |
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out.close() |
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val Error = """(?s)^\S* error: (.*)$""".r |
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val errors = |
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space_explode(marker, Library.strip_ansi_color(out.toString)). |
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collect({ case Error(msg) => "Scala error: " + Library.trim_line(msg) }) |
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if (!ok && errors.isEmpty) List("Error") else errors |
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} |
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} |
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object Toplevel extends Fun_String("scala_toplevel") { |
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val here = Scala_Project.here |
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def apply(arg: String): String = { |
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val (interpret, source) = |
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YXML.parse_body(arg) match { |
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case Nil => (false, "") |
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case List(XML.Text(source)) => (false, source) |
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case body => import XML.Decode._; pair(bool, string)(body) |
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} |
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val errors = |
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try { Compiler.toplevel(interpret, source) } |
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catch { case ERROR(msg) => List(msg) } |
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locally { import XML.Encode._; YXML.string_of_body(list(string)(errors)) } |
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} |
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} |
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/** interpreter thread **/ |
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object Interpreter { |
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/* requests */ |
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sealed abstract class Request |
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case class Execute(command: Compiler.Context => Unit) extends Request |
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case object Shutdown extends Request |
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/* known interpreters */ |
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private val known = Synchronized(Set.empty[Interpreter]) |
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def add(interpreter: Interpreter): Unit = known.change(_ + interpreter) |
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def del(interpreter: Interpreter): Unit = known.change(_ - interpreter) |
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def get[A](which: PartialFunction[Interpreter, A]): Option[A] = |
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known.value.collectFirst(which) |
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} |
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class Interpreter(context: Compiler.Context) { |
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interpreter => |
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private val running = Synchronized[Option[Thread]](None) |
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def running_thread(thread: Thread): Boolean = running.value.contains(thread) |
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def interrupt_thread(): Unit = running.change({ opt => opt.foreach(_.interrupt()); opt }) |
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private lazy val thread: Consumer_Thread[Interpreter.Request] = |
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Consumer_Thread.fork("Scala.Interpreter") { |
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case Interpreter.Execute(command) => |
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try { |
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running.change(_ => Some(Thread.currentThread())) |
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command(context) |
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} |
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finally { |
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running.change(_ => None) |
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Exn.Interrupt.dispose() |
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} |
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true |
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case Interpreter.Shutdown => |
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Interpreter.del(interpreter) |
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false |
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} |
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def shutdown(): Unit = { |
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thread.send(Interpreter.Shutdown) |
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interrupt_thread() |
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thread.shutdown() |
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} |
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def execute(command: Compiler.Context => Unit): Unit = |
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thread.send(Interpreter.Execute(command)) |
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Interpreter.add(interpreter) |
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thread |
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} |
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/** invoke Scala functions from ML **/ |
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/* invoke function */ |
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object Tag extends Enumeration { |
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val NULL, OK, ERROR, FAIL, INTERRUPT = Value |
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} |
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def function_thread(name: String): Boolean = |
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functions.find(fun => fun.name == name) match { |
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case Some(fun) => fun.thread |
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case None => false |
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} |
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def function_body(name: String, args: List[Bytes]): (Tag.Value, List[Bytes]) = |
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functions.find(fun => fun.name == name) match { |
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case Some(fun) => |
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Exn.capture { fun.invoke(args) } match { |
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case Exn.Res(null) => (Tag.NULL, Nil) |
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case Exn.Res(res) => (Tag.OK, res) |
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case Exn.Exn(Exn.Interrupt()) => (Tag.INTERRUPT, Nil) |
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case Exn.Exn(e) => (Tag.ERROR, List(Bytes(Exn.message(e)))) |
|
43748 | 237 |
} |
73565 | 238 |
case None => (Tag.FAIL, List(Bytes("Unknown Isabelle/Scala function: " + quote(name)))) |
43748 | 239 |
} |
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240 |
|
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241 |
|
72157 | 242 |
/* protocol handler */ |
243 |
||
75393 | 244 |
class Handler extends Session.Protocol_Handler { |
72157 | 245 |
private var session: Session = null |
246 |
private var futures = Map.empty[String, Future[Unit]] |
|
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247 |
|
72213 | 248 |
override def init(session: Session): Unit = |
249 |
synchronized { this.session = session } |
|
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250 |
|
75380 | 251 |
override def exit(): Unit = synchronized { |
72157 | 252 |
for ((id, future) <- futures) cancel(id, future) |
253 |
futures = Map.empty |
|
254 |
} |
|
65219 | 255 |
|
73565 | 256 |
private def result(id: String, tag: Scala.Tag.Value, res: List[Bytes]): Unit = |
75380 | 257 |
synchronized { |
72157 | 258 |
if (futures.isDefinedAt(id)) { |
73565 | 259 |
session.protocol_command_raw("Scala.result", Bytes(id) :: Bytes(tag.id.toString) :: res) |
72157 | 260 |
futures -= id |
261 |
} |
|
262 |
} |
|
65220 | 263 |
|
75393 | 264 |
private def cancel(id: String, future: Future[Unit]): Unit = { |
73367 | 265 |
future.cancel() |
73565 | 266 |
result(id, Scala.Tag.INTERRUPT, Nil) |
72157 | 267 |
} |
268 |
||
75380 | 269 |
private def invoke_scala(msg: Prover.Protocol_Output): Boolean = synchronized { |
72157 | 270 |
msg.properties match { |
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271 |
case Markup.Invoke_Scala(name, id) => |
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def body(): Unit = { |
73565 | 273 |
val (tag, res) = Scala.function_body(name, msg.chunks) |
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result(id, tag, res) |
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275 |
} |
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parents:
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276 |
val future = |
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parents:
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277 |
if (Scala.function_thread(name)) { |
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changeset
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278 |
Future.thread(name = Isabelle_Thread.make_name(base = "invoke_scala"))(body()) |
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279 |
} |
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280 |
else Future.fork(body()) |
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281 |
futures += (id -> future) |
72157 | 282 |
true |
283 |
case _ => false |
|
56387 | 284 |
} |
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|
285 |
} |
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parents:
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|
286 |
|
75380 | 287 |
private def cancel_scala(msg: Prover.Protocol_Output): Boolean = synchronized { |
72157 | 288 |
msg.properties match { |
289 |
case Markup.Cancel_Scala(id) => |
|
290 |
futures.get(id) match { |
|
291 |
case Some(future) => cancel(id, future) |
|
292 |
case None => |
|
293 |
} |
|
294 |
true |
|
295 |
case _ => false |
|
296 |
} |
|
297 |
} |
|
52111
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explicit management of Session.Protocol_Handlers, with protocol state and functions;
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parents:
49470
diff
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298 |
|
75440 | 299 |
override val functions: Session.Protocol_Functions = |
72157 | 300 |
List( |
301 |
Markup.Invoke_Scala.name -> invoke_scala, |
|
302 |
Markup.Cancel_Scala.name -> cancel_scala) |
|
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wenzelm
parents:
49470
diff
changeset
|
303 |
} |
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explicit management of Session.Protocol_Handlers, with protocol state and functions;
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parents:
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changeset
|
304 |
} |
71871
28def00726ca
more robust isabelle.Functions --- avoid Java reflection with unclear class/object treatment;
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parents:
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diff
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|
305 |
|
72193 | 306 |
class Scala_Functions extends Scala.Functions( |
307 |
Scala.Echo, |
|
308 |
Scala.Sleep, |
|
72194 | 309 |
Scala.Toplevel, |
73576 | 310 |
Bytes.Decode_Base64, |
311 |
Bytes.Encode_Base64, |
|
75579 | 312 |
Bytes.Compress, |
313 |
Bytes.Uncompress, |
|
72760
042180540068
clarified protocol: Doc.check at run-time via Scala function;
wenzelm
parents:
72756
diff
changeset
|
314 |
Doc.Doc_Names, |
72763 | 315 |
Bibtex.Check_Database, |
73314
87403fde8cc3
more direct make_directory in ML and Scala, but ssh still requires perl for Windows UNC paths (see a5dbad753552);
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parents:
73228
diff
changeset
|
316 |
Isabelle_System.Make_Directory, |
73322 | 317 |
Isabelle_System.Copy_Dir, |
318 |
Isabelle_System.Copy_File, |
|
319 |
Isabelle_System.Copy_File_Base, |
|
73324 | 320 |
Isabelle_System.Rm_Tree, |
73323 | 321 |
Isabelle_System.Download, |
73523
2cd23d587db9
further clarification of Isabelle distribution identification -- avoid odd patching of sources;
wenzelm
parents:
73431
diff
changeset
|
322 |
Isabelle_System.Isabelle_Id, |
73418
7d7d959547a1
support for SystemOnTPTP in Isabelle/ML and Isabelle/Scala (without perl);
wenzelm
parents:
73367
diff
changeset
|
323 |
Isabelle_Tool.Isabelle_Tools, |
73431
f27d7b12e8a4
support for SystemOnTPTP.run_system, with strict error following scripts/remote_atp;
wenzelm
parents:
73419
diff
changeset
|
324 |
isabelle.atp.SystemOnTPTP.List_Systems, |
f27d7b12e8a4
support for SystemOnTPTP.run_system, with strict error following scripts/remote_atp;
wenzelm
parents:
73419
diff
changeset
|
325 |
isabelle.atp.SystemOnTPTP.Run_System) |