Rename fletch -> dartino

pkg/fletchc/lib/src/zone_helper.dart

-// Copyright (c) 2015, the Dartino project authors. Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE.md file.
-
-/// Helper functions for running code in a Zone.
-library fletchc.zone_helper;
-
-import 'dart:async';
-
-import 'dart:isolate';
-
-Future runGuarded(
-    Future f(),
-    {void printLineOnStdout(line),
-     void handleLateError(error, StackTrace stackTrace)}) {
-
-  var printWrapper;
-  if (printLineOnStdout != null) {
-    printWrapper = (_1, _2, _3, String line) {
-      printLineOnStdout(line);
-    };
-  }
-
-  Completer completer = new Completer();
-
-  handleUncaughtError(error, StackTrace stackTrace) {
-    if (!completer.isCompleted) {
-      completer.completeError(error, stackTrace);
-    } else if (handleLateError != null) {
-      handleLateError(error, stackTrace);
-    } else {
-      // Delegate to parent.
-      throw error;
-    }
-  }
-
-  ZoneSpecification specification = new ZoneSpecification(print: printWrapper);
-
-  ReceivePort errorPort = new ReceivePort();
-  Future errorFuture = errorPort.listen((List errors) {
-    Isolate.current.removeErrorListener(errorPort.sendPort);
-    errorPort.close();
-    var error = errors[0];
-    var stackTrace = errors[1];
-    if (stackTrace != null) {
-      stackTrace = new StackTrace.fromString(stackTrace);
-    }
-    handleUncaughtError(error, stackTrace);
-  }).asFuture();
-
-  Isolate.current.addErrorListener(errorPort.sendPort);
-  Isolate.current.setErrorsFatal(false);
-  return acknowledgeControlMessages(Isolate.current).then((_) {
-    runZoned(
-        () => new Future(f).then(completer.complete),
-        zoneSpecification: specification,
-        onError: handleUncaughtError);
-
-    return completer.future.whenComplete(() {
-      errorPort.close();
-      Isolate.current.removeErrorListener(errorPort.sendPort);
-      return errorFuture;
-    });
-  });
-}
-
-/// Ping [isolate] to ensure control messages have been delivered.  Control
-/// messages are things like [Isolate.addErrorListener] and
-/// [Isolate.addOnExitListener].
-Future acknowledgeControlMessages(Isolate isolate, {Capability resume}) {
-  ReceivePort ping = new ReceivePort();
-  Isolate.current.ping(ping.sendPort);
-  if (resume == null) {
-    return ping.first;
-  } else {
-    return ping.first.then((_) => isolate.resume(resume));
-  }
-}