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

class MyFuture<T extends core::Object> extends core::Object implements asy::Future<self::MyFuture::T> {
  constructor •() → void
    : super core::Object::•() {}
  constructor value(self::MyFuture::T x) → void
    : super core::Object::•() {}
  abstract method noSuchMethod(dynamic invocation) → dynamic;
  method then<S extends core::Object>((self::MyFuture::T) → asy::FutureOr<self::MyFuture::then::S> f, {core::Function onError = null}) → self::MyFuture<self::MyFuture::then::S>
    return null;
}
static method test() → void {
  asy::Future<core::bool> f;
  asy::Future<core::int> t1 = f.{asy::Future::then}<core::int>((core::bool x) → asy::Future<core::int> /* originally async */ {
    final asy::Completer<asy::FutureOr<core::int>> :completer = asy::Completer::sync<asy::FutureOr<core::int>>();
    asy::FutureOr<core::int> :return_value;
    dynamic :async_op_then;
    dynamic :async_op_error;
    dynamic :await_jump_var = 0;
    dynamic :await_ctx_var;
    dynamic :saved_try_context_var0;
    dynamic :async_temporary_0;
    function :async_op([dynamic :result, dynamic :exception, dynamic :stack_trace]) → dynamic yielding 
      try {
        #L1:
        {
          if(x) {
            :async_temporary_0 = 2;
          }
          else {
            asy::_awaitHelper(asy::Future::value<core::int>(3), :async_op_then, :async_op_error, :async_op);
            [yield] null;
            :async_temporary_0 = :result;
          }
          :return_value = :async_temporary_0;
          break #L1;
        }
        :completer.complete(:return_value);
        return;
      }
      on dynamic catch(dynamic :exception, dynamic :stack_trace) {
        :completer.completeError(:exception, :stack_trace);
      }
    :async_op_then = asy::_asyncThenWrapperHelper(:async_op);
    :async_op_error = asy::_asyncErrorWrapperHelper(:async_op);
    asy::Future::microtask<dynamic>(:async_op);
    return :completer.future;
  });
  asy::Future<core::int> t2 = f.{asy::Future::then}<core::int>((core::bool x) → asy::Future<core::int> /* originally async */ {
    final asy::Completer<asy::FutureOr<core::int>> :completer = asy::Completer::sync<asy::FutureOr<core::int>>();
    asy::FutureOr<core::int> :return_value;
    dynamic :async_op_then;
    dynamic :async_op_error;
    dynamic :await_jump_var = 0;
    dynamic :await_ctx_var;
    dynamic :saved_try_context_var0;
    function :async_op([dynamic :result, dynamic :exception, dynamic :stack_trace]) → dynamic yielding 
      try {
        #L2:
        {
          asy::_awaitHelper(x, :async_op_then, :async_op_error, :async_op);
          [yield] null;
          :return_value = :result ? 2 : asy::Future::value<core::int>(3);
          break #L2;
        }
        :completer.complete(:return_value);
        return;
      }
      on dynamic catch(dynamic :exception, dynamic :stack_trace) {
        :completer.completeError(:exception, :stack_trace);
      }
    :async_op_then = asy::_asyncThenWrapperHelper(:async_op);
    :async_op_error = asy::_asyncErrorWrapperHelper(:async_op);
    asy::Future::microtask<dynamic>(:async_op);
    return :completer.future;
  });
  asy::Future<core::int> t5 = f.{asy::Future::then}<core::int>((core::bool x) → core::Object => x ? 2 : asy::Future::value<core::int>(3));
  asy::Future<core::int> t6 = f.{asy::Future::then}<core::int>((core::bool x) → asy::FutureOr<core::int> {
    return x ? 2 : asy::Future::value<core::int>(3);
  });
}
static method main() → dynamic {}