public MondValue Start(MondState state, MondValue value)
{
if (value.Type == MondValueType.Function)
{
value = state.Call(value);
}
var getEnumerator = value["getEnumerator"];
if (getEnumerator.Type != MondValueType.Function)
{
throw new MondRuntimeException("Task objects must define getEnumerator");
}
var enumerator = state.Call(getEnumerator);
var task = _factory.StartNew(async() =>
{
try
{
await AsyncUtil.RunMondTask(state, enumerator);
}
catch (Exception e)
{
lock (_exceptions)
_exceptions.Enqueue(e);
}
finally
{
Interlocked.Decrement(ref _activeTasks);
}
});
Interlocked.Increment(ref _activeTasks);
// return a task that completes when the started task completes
Func <Task> waitTask = async() =>
{
await await task;
};
return(AsyncUtil.ToObject(waitTask()));
}