library test;
import self as self;
import "dart:core" as core;
import "dart:async" as asy;

abstract class MyStream<T extends core::Object> extends asy::Stream<self::MyStream::T> {
  static factory •<T extends core::Object>() → self::MyStream<self::MyStream::•::T>
    return null;
}
static method foo() → asy::Stream<core::List<core::int>> /* originally async* */ {
  dynamic :controller;
  dynamic :async_op_then;
  dynamic :async_op_error;
  dynamic :await_jump_var = 0;
  dynamic :await_ctx_var;
  dynamic :saved_try_context_var0;
  dynamic :saved_try_context_var1;
  function :async_op([dynamic :result, dynamic :exception, dynamic :stack_trace]) → dynamic yielding 
    try
      try {
        #L1:
        {
          if(:controller.add(<core::int>[]))
            return null;
          else
            [yield] null;
          if(:controller.add(self::MyStream::•<dynamic>()))
            return null;
          else
            [yield] null;
          if(:controller.addStream(<dynamic>[]))
            return null;
          else
            [yield] null;
          if(:controller.addStream(self::MyStream::•<core::List<core::int>>()))
            return null;
          else
            [yield] null;
        }
        return;
      }
      on dynamic catch(dynamic :exception, dynamic :stack_trace) {
        :controller.addError(:exception, :stack_trace);
      }
    finally {
      :controller.close();
    }
  :async_op_then = asy::_asyncThenWrapperHelper(:async_op);
  :async_op_error = asy::_asyncErrorWrapperHelper(:async_op);
  :controller = new asy::_AsyncStarStreamController::•(:async_op);
  return :controller.stream;
}
static method bar() → core::Iterable<core::Map<core::int, core::int>> /* originally sync* */ {
  dynamic :await_jump_var = 0;
  dynamic :await_ctx_var;
  function :sync_op(core::Iterator<dynamic> :iterator) → core::bool yielding {
    {
      {
        :iterator._current = <core::int, core::int>{};
        [yield] true;
      }
      {
        :iterator._current = core::List::_internal<dynamic>();
        [yield] true;
      }
      {
        :iterator.isYieldEach = true;
        :iterator._current = <dynamic, dynamic>{};
        [yield] true;
      }
      {
        :iterator.isYieldEach = true;
        :iterator._current = core::List::_internal<core::Map<core::int, core::int>>();
        [yield] true;
      }
    }
    return false;
  }
  return new core::_SyncIterable::•(:sync_op);
}
static method main() → dynamic {}