$await放在条件中，似乎编译出来的代码不正确

[chenfengyuan]

代码

eval(Wind.compile('async',function(){
  if($await(Wind.Async.sleep(1000)))
    console.log('true')
  else
    console.log('false')
  console.log('done')
}))

产生

function () {
                                          var _builder_$0 = Wind.builders["async"];
                                          return _builder_$0.Start(this,
                                              _builder_$0.Delay(function () {
/*     if ($await(Wind.Async.sleep(1000)))  */    if ($await(Wind.Async.sleep(1000))) 
/*         console.log("true"); */                    console.log("true");
/*     else  */                                   else 
/*         console.log("false"); */                   console.log("false");
/*     console.log("done"); */                    console.log("done");
                                                  return _builder_$0.Normal();
                                              })
                                          );
/* } */

$await没有被特殊处理，运行此函数，报错
Uncaught ReferenceError: $await is not defined

而如果先把结果存在变量中，再去判断就没问题了，

eval(Wind.compile('async',function(){
  var tmp = $await(Wind.Async.sleep(1000))
  if(tmp)
    console.log('true')
  else
    console.log('false')
  console.log('done')
}))

产生:

function () {
                                               var _builder_$0 = Wind.builders["async"];
                                               return _builder_$0.Start(this,
                                                   _builder_$0.Delay(function () {
/*     var tmp = $await(Wind.Async.sleep(1000)); */    return _builder_$0.Bind(Wind.Async.sleep(1000), function (tmp) {
/*     if (tmp)  */                                        if (tmp) 
/*         console.log("true"); */                             console.log("true");
/*     else  */                                            else 
/*         console.log("false"); */                            console.log("false");
/*     console.log("done"); */                             console.log("done");
                                                           return _builder_$0.Normal();
                                                       });
                                                   })
                                               );
/* } */                                    }

能正常运行。