Update mojo sdk to rev f68e697e389943cd9bf9652397312280e96b127a

third_party/mojo/src/mojo/public/python/mojo_bindings/promise.py

Index: third_party/mojo/src/mojo/public/python/mojo_bindings/promise.py
diff --git a/third_party/mojo/src/mojo/public/python/mojo_bindings/promise.py b/third_party/mojo/src/mojo/public/python/mojo_bindings/promise.py
index ebf6f85e0dcc034f3346a8a2197170012831bb2b..7ceb52c246a2820e229ada2d0c12d364cef90017 100644
--- a/third_party/mojo/src/mojo/public/python/mojo_bindings/promise.py
+++ b/third_party/mojo/src/mojo/public/python/mojo_bindings/promise.py
@@ -149,6 +149,21 @@ class Promise(object):
     """Equivalent to |Then(None, onCatched)|"""
     return self.Then(None, onCatched)
 
+  def __getattr__(self, attribute):
+    """
+    Allows to get member of a promise. It will return a promise that will
+    resolve to the member of the result.
+    """
+    return self.Then(lambda v: getattr(v, attribute))
+
+  def __call__(self, *args, **kwargs):
+    """
+    Allows to call this promise. It will return a promise that will resolved to
+    the result of calling the result of this promise with the given arguments.
+    """
+    return self.Then(lambda v: v(*args, **kwargs))
+
+
   def _Resolve(self, value):
     if self.state != Promise.STATE_PENDING:
       return
@@ -175,6 +190,16 @@ class Promise(object):
     self._onRejected = None
 
 
+def async(f):
+  def _ResolvePromises(*args, **kwargs):
+    keys = kwargs.keys()
+    values = kwargs.values()
+    all_args = list(args) + values
+    return Promise.All(*all_args).Then(
+        lambda r: f(*r[:len(args)], **dict(zip(keys, r[len(args):]))))
+  return _ResolvePromises
+
+
 def _IterateAction(iterable):
   def _Run(x):
     for f in iterable: