Revert "Unify dart:isolate."

runtime/lib/isolate_patch.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.
-
-patch class _ReceivePortFactory {
-  /* patch */ factory ReceivePort() {
-    return new _ReceivePortImpl();
-  }
-}
-
-class _ReceivePortImpl implements ReceivePort {
-  factory _ReceivePortImpl() native "ReceivePortImpl_factory";
-
-  receive(void onMessage(var message, SendPort replyTo)) {
-    _onMessage = onMessage;
-  }
-
-  close() {
-    _portMap.remove(_id);
-    _closeInternal(_id);
-  }
-
-  SendPort toSendPort() {
-    return new _SendPortImpl(_id);
-  }
-
-  /**** Internal implementation details ****/
-  // Called from the VM to create a new ReceivePort instance.
-  static _ReceivePortImpl _get_or_create(int id) {
-    if (_portMap !== null) {
-      _ReceivePortImpl port = _portMap[id];
-      if (port !== null) {
-        return port;
-      }
-    }
-    return new _ReceivePortImpl._internal(id);
-  }
-  _ReceivePortImpl._internal(int id) : _id = id {
-    if (_portMap === null) {
-      _portMap = new Map();
-    }
-    _portMap[id] = this;
-  }
-
-  // Called from the VM to dispatch to the handler.
-  static void _handleMessage(int id, int replyId, var message) {
-    assert(_portMap !== null);
-    ReceivePort port = _portMap[id];
-    SendPort replyTo = (replyId == 0) ? null : new _SendPortImpl(replyId);
-    (port._onMessage)(message, replyTo);
-  }
-
-  // Call into the VM to close the VM maintained mappings.
-  static _closeInternal(int id) native "ReceivePortImpl_closeInternal";
-
-  final int _id;
-  var _onMessage;
-
-  // id to ReceivePort mapping.
-  static Map _portMap;
-}
-
-
-class _SendPortImpl implements SendPort {
-  /*--- public interface ---*/
-  void send(var message, [SendPort replyTo = null]) {
-    this._sendNow(message, replyTo);
-  }
-
-  void _sendNow(var message, SendPort replyTo) {
-    int replyId = (replyTo === null) ? 0 : replyTo._id;
-    _sendInternal(_id, replyId, message);
-  }
-
-  Future call(var message) {
-    final completer = new Completer();
-    final port = new _ReceivePortImpl();
-    send(message, port.toSendPort());
-    port.receive((value, ignoreReplyTo) {
-      port.close();
-      if (value is Exception) {
-        completer.completeException(value);
-      } else {
-        completer.complete(value);
-      }
-    });
-    return completer.future;
-  }
-
-  bool operator==(var other) {
-    return (other is _SendPortImpl) && _id == other._id;
-  }
-
-  int hashCode() {
-    return _id;
-  }
-
-  /*--- private implementation ---*/
-  const _SendPortImpl(int id) : _id = id;
-
-  // _SendPortImpl._create is called from the VM when a new SendPort instance is
-  // needed by the VM code.
-  static SendPort _create(int id) {
-    return new _SendPortImpl(id);
-  }
-
-  // Forward the implementation of sending messages to the VM. Only port ids
-  // are being handed to the VM.
-  static _sendInternal(int sendId, int replyId, var message)
-      native "SendPortImpl_sendInternal_";
-
-  final int _id;
-}
-
-_getPortInternal() native "isolate_getPortInternal";
-
-ReceivePort _portInternal;
-
-patch ReceivePort get port() {
-  if (_portInternal === null) {
-    _portInternal = _getPortInternal();
-  }
-  return _portInternal;
-}
-
-patch spawnFunction(void topLevelFunction()) native "isolate_spawnFunction";
-
-patch spawnUri(String uri) native "isolate_spawnUri";
-