library /*isNonNullableByDefault*/;
import self as self;
import "dart:core" as core;
import "dart:async" as asy;
import "dart:_internal" as _in;

class A extends core::Object {
  synthetic constructor •() → self::A
    : super core::Object::•()
    ;
  method foo(dynamic x) → asy::Future<void> /* originally async */ {
    final asy::_Future<void> :async_future = new asy::_Future::•<void>();
    core::bool* :is_sync = false;
    void :return_value;
    (dynamic) → dynamic :async_op_then;
    (core::Object, core::StackTrace) → dynamic :async_op_error;
    core::int :await_jump_var = 0;
    dynamic :await_ctx_var;
    function :async_op(dynamic :result_or_exception, dynamic :stack_trace) → dynamic yielding 
      try {
        #L1:
        {}
        asy::_completeWithNoFutureOnAsyncReturn(:async_future, :return_value, :is_sync);
        return;
      }
      on dynamic catch(dynamic exception, core::StackTrace stack_trace) {
        asy::_completeOnAsyncError(:async_future, exception, stack_trace, :is_sync);
      }
    :async_op_then = asy::_asyncThenWrapperHelper(:async_op);
    :async_op_error = asy::_asyncErrorWrapperHelper(:async_op);
    :async_op(null, null){() → dynamic};
    :is_sync = true;
    return :async_future;
  }
}
class B extends core::Object {
  synthetic constructor •() → self::B
    : super core::Object::•()
    ;
  method bar(dynamic x) → asy::Future<void> /* originally async */ {
    final asy::_Future<void> :async_future = new asy::_Future::•<void>();
    core::bool* :is_sync = false;
    void :return_value;
    (dynamic) → dynamic :async_op_then;
    (core::Object, core::StackTrace) → dynamic :async_op_error;
    core::int :await_jump_var = 0;
    dynamic :await_ctx_var;
    function :async_op(dynamic :result_or_exception, dynamic :stack_trace) → dynamic yielding 
      try {
        #L2:
        {}
        asy::_completeWithNoFutureOnAsyncReturn(:async_future, :return_value, :is_sync);
        return;
      }
      on dynamic catch(dynamic exception, core::StackTrace stack_trace) {
        asy::_completeOnAsyncError(:async_future, exception, stack_trace, :is_sync);
      }
    :async_op_then = asy::_asyncThenWrapperHelper(:async_op);
    :async_op_error = asy::_asyncErrorWrapperHelper(:async_op);
    :async_op(null, null){() → dynamic};
    :is_sync = true;
    return :async_future;
  }
}
static method main() → dynamic /* originally async */ {
  final asy::_Future<dynamic> :async_future = new asy::_Future::•<dynamic>();
  core::bool* :is_sync = false;
  dynamic :return_value;
  (dynamic) → dynamic :async_op_then;
  (core::Object, core::StackTrace) → dynamic :async_op_error;
  core::int :await_jump_var = 0;
  dynamic :await_ctx_var;
  dynamic :saved_try_context_var0;
  self::B :async_temporary_0;
  dynamic :async_temporary_1;
  function :async_op(dynamic :result_or_exception, dynamic :stack_trace) → dynamic yielding 
    try {
      #L3:
      {
        :async_temporary_1 = new self::A::•();
        [yield] let dynamic #t1 = asy::_awaitHelper(null, :async_op_then, :async_op_error) in null;
        :async_temporary_1 = _in::unsafeCast<self::A>(:async_temporary_1).{self::A::foo}(_in::unsafeCast<Null>(:result_or_exception)){(dynamic) → asy::Future<void>};
        :async_temporary_0 = new self::B::•();
        [yield] let dynamic #t2 = asy::_awaitHelper(null, :async_op_then, :async_op_error) in null;
        :return_value = core::_GrowableList::_literal2<asy::Future<void>>(_in::unsafeCast<asy::Future<void>>(:async_temporary_1), _in::unsafeCast<self::B>(:async_temporary_0).{self::B::bar}(_in::unsafeCast<Null>(:result_or_exception)){(dynamic) → asy::Future<void>});
        break #L3;
      }
      asy::_completeWithNoFutureOnAsyncReturn(:async_future, :return_value, :is_sync);
      return;
    }
    on dynamic catch(dynamic exception, core::StackTrace stack_trace) {
      asy::_completeOnAsyncError(:async_future, exception, stack_trace, :is_sync);
    }
  :async_op_then = asy::_asyncThenWrapperHelper(:async_op);
  :async_op_error = asy::_asyncErrorWrapperHelper(:async_op);
  :async_op(null, null){() → dynamic};
  :is_sync = true;
  return :async_future;
}