Make int and double nullable by default

test/dart_codegen/expect/async/stream_impl.dart

 part of dart.async;
  abstract class _EventSink<T> {void _add(T data);
  void _addError(Object error, StackTrace stackTrace);
  void _close();
 }
  abstract class _EventDispatch<T> {void _sendData(T data);
  void _sendError(Object error, StackTrace stackTrace);
  void _sendDone();
 }
  class _BufferingStreamSubscription<T> implements StreamSubscription<T>, _EventSink<T>, _EventDispatch<T> {static const int _STATE_CANCEL_ON_ERROR = 1;
@@ skipping 24 matching lines @@
  _pending.schedule(this);
 }
 }
  _PendingEvents _extractPending() {
 assert (_isCanceled); _PendingEvents events = _pending;
  _pending = null;
  return events;
 }
  void onData(void handleData(T event)) {
 if (handleData == null) handleData = _nullDataHandler;
- _onData = _zone.registerUnaryCallback(DDC$RT.wrap((void f(T __u129)) {
+ _onData = _zone.registerUnaryCallback(DDC$RT.wrap((void f(T __u118)) {
 void c(T x0) => f(DDC$RT.cast(x0, dynamic, T, "CastParam", """line 154, column 43 of dart:async/stream_impl.dart: """, x0 is T, false));
  return f == null ? null : c;
 }
-, handleData, DDC$RT.type((__t132<T> _) {
+, handleData, DDC$RT.type((__t121<T> _) {
 }
-), __t130, "Wrap", """line 154, column 43 of dart:async/stream_impl.dart: """, handleData is __t130));
+), __t119, "Wrap", """line 154, column 43 of dart:async/stream_impl.dart: """, handleData is __t119));
 }
  void onError(Function handleError) {
 if (handleError == null) handleError = _nullErrorHandler;
  _onError = _registerErrorHandler(handleError, _zone);
 }
  void onDone(void handleDone()) {
 if (handleDone == null) handleDone = _nullDoneHandler;
  _onDone = _zone.registerCallback(handleDone);
 }
  void pause([Future resumeSignal]) {
@@ skipping 101 matching lines @@
  if (!_hasPending) {
 _state |= _STATE_HAS_PENDING;
  if (!_isPaused) {
   _pending.schedule(this);
   }
 }
 }
  void _sendData(T data) {
 assert (!_isCanceled); assert (!_isPaused); assert (!_inCallback); bool wasInputPaused = _isInputPaused;
  _state |= _STATE_IN_CALLBACK;
- _zone.runUnaryGuarded(DDC$RT.wrap((void f(T __u134)) {
+ _zone.runUnaryGuarded(DDC$RT.wrap((void f(T __u123)) {
 void c(T x0) => f(DDC$RT.cast(x0, dynamic, T, "CastParam", """line 341, column 27 of dart:async/stream_impl.dart: """, x0 is T, false));
  return f == null ? null : c;
 }
-, _onData, DDC$RT.type((__t132<T> _) {
+, _onData, DDC$RT.type((__t121<T> _) {
 }
-), __t130, "Wrap", """line 341, column 27 of dart:async/stream_impl.dart: """, _onData is __t130), data);
+), __t119, "Wrap", """line 341, column 27 of dart:async/stream_impl.dart: """, _onData is __t119), data);
  _state &= ~_STATE_IN_CALLBACK;
  _checkState(wasInputPaused);
 }
  void _sendError(var error, StackTrace stackTrace) {
 assert (!_isCanceled); assert (!_isPaused); assert (!_inCallback); bool wasInputPaused = _isInputPaused;
  void sendError() {
 if (_isCanceled && !_waitsForCancel) return; _state |= _STATE_IN_CALLBACK;
  if (_onError is ZoneBinaryCallback) {
-  _zone.runBinaryGuarded(DDC$RT.cast(_onError, Function, __t135, "CastGeneral", """line 358, column 32 of dart:async/stream_impl.dart: """, _onError is __t135, false), error, stackTrace);
+  _zone.runBinaryGuarded(DDC$RT.cast(_onError, Function, __t124, "CastGeneral", """line 358, column 32 of dart:async/stream_impl.dart: """, _onError is __t124, false), error, stackTrace);
   }
  else {
-  _zone.runUnaryGuarded(DDC$RT.cast(_onError, Function, __t130, "CastGeneral", """line 360, column 31 of dart:async/stream_impl.dart: """, _onError is __t130, false), error);
+  _zone.runUnaryGuarded(DDC$RT.cast(_onError, Function, __t119, "CastGeneral", """line 360, column 31 of dart:async/stream_impl.dart: """, _onError is __t119, false), error);
   }
  _state &= ~_STATE_IN_CALLBACK;
 }
  if (_cancelOnError) {
 _state |= _STATE_WAIT_FOR_CANCEL;
  _cancel();
  if (_cancelFuture is Future) {
   _cancelFuture.whenComplete(sendError);
   }
  else {
@@ skipping 73 matching lines @@
  void _onListen(StreamSubscription subscription) {
 }
 }
  typedef _PendingEvents _EventGenerator();
  class _GeneratedStreamImpl<T> extends _StreamImpl<T> {final _EventGenerator _pending;
  bool _isUsed = false;
  _GeneratedStreamImpl(this._pending);
  StreamSubscription _createSubscription(void onData(T data), Function onError, void onDone(), bool cancelOnError) {
 if (_isUsed) throw new StateError("Stream has already been listened to.");
  _isUsed = true;
- return new _BufferingStreamSubscription(DDC$RT.wrap((void f(T __u138)) {
+ return new _BufferingStreamSubscription(DDC$RT.wrap((void f(T __u127)) {
 void c(T x0) => f(DDC$RT.cast(x0, dynamic, T, "CastParam", """line 516, column 9 of dart:async/stream_impl.dart: """, x0 is T, false));
  return f == null ? null : c;
 }
-, onData, DDC$RT.type((__t141<T> _) {
+, onData, DDC$RT.type((__t130<T> _) {
 }
-), __t139, "Wrap", """line 516, column 9 of dart:async/stream_impl.dart: """, onData is __t139), onError, onDone, cancelOnError).._setPendingEvents(_pending());
+), __t128, "Wrap", """line 516, column 9 of dart:async/stream_impl.dart: """, onData is __t128), onError, onDone, cancelOnError).._setPendingEvents(_pending());
 }
 }
  class _IterablePendingEvents<T> extends _PendingEvents {Iterator<T> _iterator;
  _IterablePendingEvents(Iterable<T> data) : _iterator = data.iterator;
  bool get isEmpty => _iterator == null;
  void handleNext(_EventDispatch dispatch) {
 if (_iterator == null) {
 throw new StateError("No events pending.");
 }
  bool isDone;
@@ skipping 165 matching lines @@
  if (isPaused) return; _state |= _DONE_SENT;
  if (_onDone != null) _zone.runGuarded(_onDone);
 }
 }
  class _AsBroadcastStream<T> extends Stream<T> {final Stream<T> _source;
  final _broadcastCallback _onListenHandler;
  final _broadcastCallback _onCancelHandler;
  final Zone _zone;
  _AsBroadcastStreamController<T> _controller;
  StreamSubscription<T> _subscription;
- _AsBroadcastStream(this._source, void onListenHandler(StreamSubscription subscription), void onCancelHandler(StreamSubscription subscription)) : _onListenHandler = Zone.current.registerUnaryCallback(DDC$RT.wrap((void f(StreamSubscription<dynamic> __u143)) {
+ _AsBroadcastStream(this._source, void onListenHandler(StreamSubscription subscription), void onCancelHandler(StreamSubscription subscription)) : _onListenHandler = Zone.current.registerUnaryCallback(DDC$RT.wrap((void f(StreamSubscription<dynamic> __u132)) {
 void c(StreamSubscription<dynamic> x0) => f(DDC$RT.cast(x0, dynamic, DDC$RT.type((StreamSubscription<dynamic> _) {
 }
 ), "CastParam", """line 813, column 63 of dart:async/stream_impl.dart: """, x0 is StreamSubscription<dynamic>, true));
  return f == null ? null : c;
 }
-, onListenHandler, __t144, __t130, "Wrap", """line 813, column 63 of dart:async/stream_impl.dart: """, onListenHandler is __t130)), _onCancelHandler = Zone.current.registerUnaryCallback(DDC$RT.wrap((void f(StreamSubscription<dynamic> __u146)) {
+, onListenHandler, __t133, __t119, "Wrap", """line 813, column 63 of dart:async/stream_impl.dart: """, onListenHandler is __t119)), _onCancelHandler = Zone.current.registerUnaryCallback(DDC$RT.wrap((void f(StreamSubscription<dynamic> __u135)) {
 void c(StreamSubscription<dynamic> x0) => f(DDC$RT.cast(x0, dynamic, DDC$RT.type((StreamSubscription<dynamic> _) {
 }
 ), "CastParam", """line 814, column 63 of dart:async/stream_impl.dart: """, x0 is StreamSubscription<dynamic>, true));
  return f == null ? null : c;
 }
-, onCancelHandler, __t144, __t130, "Wrap", """line 814, column 63 of dart:async/stream_impl.dart: """, onCancelHandler is __t130)), _zone = Zone.current {
+, onCancelHandler, __t133, __t119, "Wrap", """line 814, column 63 of dart:async/stream_impl.dart: """, onCancelHandler is __t119)), _zone = Zone.current {
 _controller = new _AsBroadcastStreamController<T>(_onListen, _onCancel);
 }
  bool get isBroadcast => true;
  StreamSubscription<T> listen(void onData(T data), {
 Function onError, void onDone(), bool cancelOnError}
 ) {
 if (_controller == null || _controller.isClosed) {
 return new _DoneStreamSubscription<T>(onDone);
 }
  if (_subscription == null) {
 _subscription = _source.listen(_controller.add, onError: _controller.addError, onDone: _controller.close);
 }
  cancelOnError = identical(true, cancelOnError);
  return _controller._subscribe(onData, onError, onDone, cancelOnError);
 }
  void _onCancel() {
 bool shutdown = (_controller == null) || _controller.isClosed;
  if (_onCancelHandler != null) {
-_zone.runUnary(DDC$RT.wrap((void f(StreamSubscription<dynamic> __u147)) {
+_zone.runUnary(DDC$RT.wrap((void f(StreamSubscription<dynamic> __u136)) {
 void c(StreamSubscription<dynamic> x0) => f(DDC$RT.cast(x0, dynamic, DDC$RT.type((StreamSubscription<dynamic> _) {
 }
 ), "CastParam", """line 842, column 22 of dart:async/stream_impl.dart: """, x0 is StreamSubscription<dynamic>, true));
  return f == null ? null : c;
 }
-, _onCancelHandler, __t144, __t130, "Wrap", """line 842, column 22 of dart:async/stream_impl.dart: """, _onCancelHandler is __t130), new _BroadcastSubscriptionWrapper(this));
+, _onCancelHandler, __t133, __t119, "Wrap", """line 842, column 22 of dart:async/stream_impl.dart: """, _onCancelHandler is __t119), new _BroadcastSubscriptionWrapper(this));
 }
  if (shutdown) {
 if (_subscription != null) {
 _subscription.cancel();
  _subscription = null;
 }
 }
 }
  void _onListen() {
 if (_onListenHandler != null) {
-_zone.runUnary(DDC$RT.wrap((void f(StreamSubscription<dynamic> __u148)) {
+_zone.runUnary(DDC$RT.wrap((void f(StreamSubscription<dynamic> __u137)) {
 void c(StreamSubscription<dynamic> x0) => f(DDC$RT.cast(x0, dynamic, DDC$RT.type((StreamSubscription<dynamic> _) {
 }
 ), "CastParam", """line 854, column 22 of dart:async/stream_impl.dart: """, x0 is StreamSubscription<dynamic>, true));
  return f == null ? null : c;
 }
-, _onListenHandler, __t144, __t130, "Wrap", """line 854, column 22 of dart:async/stream_impl.dart: """, _onListenHandler is __t130), new _BroadcastSubscriptionWrapper(this));
+, _onListenHandler, __t133, __t119, "Wrap", """line 854, column 22 of dart:async/stream_impl.dart: """, _onListenHandler is __t119), new _BroadcastSubscriptionWrapper(this));
 }
 }
  void _cancelSubscription() {
 if (_subscription == null) return; StreamSubscription subscription = _subscription;
  _subscription = null;
  _controller = null;
  subscription.cancel();
 }
  void _pauseSubscription(Future resumeSignal) {
 if (_subscription == null) return; _subscription.pause(resumeSignal);
@@ skipping 34 matching lines @@
 throw new UnsupportedError("Cannot change handlers of asBroadcastStream source subscription.");
 }
 }
  class _StreamIteratorImpl<T> implements StreamIterator<T> {static const int _STATE_FOUND = 0;
  static const int _STATE_DONE = 1;
  static const int _STATE_MOVING = 2;
  static const int _STATE_EXTRA_DATA = 3;
  static const int _STATE_EXTRA_ERROR = 4;
  static const int _STATE_EXTRA_DONE = 5;
  StreamSubscription _subscription;
- T _current = ((__x149) => DDC$RT.cast(__x149, Null, T, "CastLiteral", """line 968, column 16 of dart:async/stream_impl.dart: """, __x149 is T, false))(null);
+ T _current = null;
  var _futureOrPrefetch = null;
  int _state = _STATE_FOUND;
  _StreamIteratorImpl(final Stream<T> stream) {
 _subscription = stream.listen(_onData, onError: _onError, onDone: _onDone, cancelOnError: true);
 }
  T get current => _current;
  Future<bool> moveNext() {
 if (_state == _STATE_DONE) {
 return new _Future<bool>.immediate(false);
 }
  if (_state == _STATE_MOVING) {
 throw new StateError("Already waiting for next.");
 }
  if (_state == _STATE_FOUND) {
 _state = _STATE_MOVING;
- _current = ((__x150) => DDC$RT.cast(__x150, Null, T, "CastLiteral", """line 998, column 18 of dart:async/stream_impl.dart: """, __x150 is T, false))(null);
+ _current = null;
  _futureOrPrefetch = new _Future<bool>();
  return DDC$RT.cast(_futureOrPrefetch, dynamic, DDC$RT.type((Future<bool> _) {
 }
 ), "CastGeneral", """line 1000, column 14 of dart:async/stream_impl.dart: """, _futureOrPrefetch is Future<bool>, false);
 }
  else {
 assert (_state >= _STATE_EXTRA_DATA); switch (_state) {case _STATE_EXTRA_DATA: _state = _STATE_FOUND;
  _current = DDC$RT.cast(_futureOrPrefetch, dynamic, T, "CastGeneral", """line 1006, column 22 of dart:async/stream_impl.dart: """, _futureOrPrefetch is T, false);
  _futureOrPrefetch = null;
  _subscription.resume();
  return new _Future<bool>.immediate(true);
  case _STATE_EXTRA_ERROR: AsyncError prefetch = DDC$RT.cast(_futureOrPrefetch, dynamic, AsyncError, "CastGeneral", """line 1011, column 33 of dart:async/stream_impl.dart: """, _futureOrPrefetch is AsyncError, true);
  _clear();
  return new _Future<bool>.immediateError(prefetch.error, prefetch.stackTrace);
  case _STATE_EXTRA_DONE: _clear();
  return new _Future<bool>.immediate(false);
 }
 }
 }
  void _clear() {
 _subscription = null;
  _futureOrPrefetch = null;
- _current = ((__x151) => DDC$RT.cast(__x151, Null, T, "CastLiteral", """line 1026, column 16 of dart:async/stream_impl.dart: """, __x151 is T, false))(null);
+ _current = null;
  _state = _STATE_DONE;
 }
  Future cancel() {
 StreamSubscription subscription = _subscription;
  if (_state == _STATE_MOVING) {
 _Future<bool> hasNext = DDC$RT.cast(_futureOrPrefetch, dynamic, DDC$RT.type((_Future<bool> _) {
 }
 ), "CastGeneral", """line 1033, column 31 of dart:async/stream_impl.dart: """, _futureOrPrefetch is _Future<bool>, false);
  _clear();
  hasNext._complete(false);
@@ skipping 35 matching lines @@
 }
 ), "CastGeneral", """line 1073, column 31 of dart:async/stream_impl.dart: """, _futureOrPrefetch is _Future<bool>, false);
  _clear();
  hasNext._complete(false);
  return;}
  _subscription.pause();
  _futureOrPrefetch = null;
  _state = _STATE_EXTRA_DONE;
 }
 }
- typedef dynamic __t130(dynamic __u131);
- typedef void __t132<T>(T __u133);
- typedef dynamic __t135(dynamic __u136, dynamic __u137);
- typedef void __t139(dynamic __u140);
- typedef void __t141<T>(T __u142);
- typedef void __t144(StreamSubscription<dynamic> __u145);
+ typedef dynamic __t119(dynamic __u120);
+ typedef void __t121<T>(T __u122);
+ typedef dynamic __t124(dynamic __u125, dynamic __u126);
+ typedef void __t128(dynamic __u129);
+ typedef void __t130<T>(T __u131);
+ typedef void __t133(StreamSubscription<dynamic> __u134);