Add "checked" parameter to Isolate.spawnUri.

sdk/lib/isolate/isolate.dart

 // Copyright (c) 2012, the Dart 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 file.
 
 /**
  * Concurrent programming using _isolates_:
  * independent workers that are similar to threads
  * but don't share memory,
  * communicating only via messages.
  */
@@ skipping 176 matching lines @@
    * WARNING: The [packageRoot] parameter is not implemented on all
    * platforms yet.
    *
    * If the [paused] parameter is set to `true`,
    * the isolate will start up in a paused state,
    * as if by an initial call of `isolate.pause(isolate.pauseCapability)`.
    * This allows setting up error or exit listeners on the isolate
    * before it starts running.
    * To resume the isolate, call `isolate.resume(isolate.pauseCapability)`.
    *
-   * WARNING: The `pause` parameter is not implemented on all platforms yet.
+   * If the [checked] parameter is set to `true` or `false`,
+   * the new isolate will run code in checked mode,
+   * respectively in production mode, if possible.
+   * If the parameter is omitted, it defaults to `true`
+   * if the current isolate is running in checked mode
+   * and `false` otherwise.

[Ivan Posva, 2015/05/29 15:18:17]

You could also say that it inherits the checked mode state from the current
isolate, although I am not 100% sure which way is more understandable.

[Lasse Reichstein Nielsen, 2015/06/02 15:26:44]

Done.

+   *
+   * If the isolate code was pre-compiled, it may not be possible to change
+   * the checked mode setting dynamically.
+   *
+   * WARNING: The [checked] parameter is not implemented on all platforms yet.
    *
    * Returns a future that will complete with an [Isolate] instance if the
    * spawning succeeded. It will complete with an error otherwise.
    */
   external static Future<Isolate> spawnUri(
       Uri uri,
       List<String> args,
       var message,
       {bool paused: false,
+       bool checked,
        Uri packageRoot});

[Ivan Posva, 2015/05/29 15:18:17]

The order in the function signature and in the documentation do not match.

[Lasse Reichstein Nielsen, 2015/06/02 15:26:44]

Done.

 
   /**
    * Requests the isolate to pause.
    *
    * The isolate should stop handling events by pausing its event queue.
    * The request will eventually make the isolate stop doing anything.
    * It will be handled before any other messages that are later sent to the
    * isolate from the current isolate, but no other guarantees are provided.
    *
    * The event loop may be paused before previously sent, but not yet exeuted,
@@ skipping 362 matching lines @@
  * as the original error, but has no other features of the original error.
  */
 class RemoteError implements Error {
   final String _description;
   final StackTrace stackTrace;
   RemoteError(String description, String stackDescription)
       : _description = description,
         stackTrace = new StackTrace.fromString(stackDescription);
   String toString() => _description;
 }