implement varargs (#83)

* implement varargs

* clean up varargs

test/test_functions.py

@@ -52,3 +52,29 @@ def keyword_fct2(a="hello", b="world"):
 @halo.remote([int, int, str, str], [str])
 def keyword_fct3(a, b, c="hello", d="world"):
   return "{} {} {} {}".format(a, b, c, d)
+
+# Test variable numbers of arguments
+
+@halo.remote([int], [str])
+def varargs_fct1(*a):
+  return " ".join(map(str, a))
+
+@halo.remote([int, int], [str])
+def varargs_fct2(a, *b):
+  return " ".join(map(str, b))
+
+try:
+  @halo.remote([int], [])
+  def kwargs_throw_exception(**c):
+    return ()
+  kwargs_exception_thrown = False
+except:
+  kwargs_exception_thrown = True
+
+try:
+  @halo.remote([int, str, int], [str])
+  def varargs_and_kwargs_throw_exception(a, b="hi", *c):
+    return "{} {} {}".format(a, b, c)
+  varargs_and_kwargs_exception_thrown = False
+except:
+  varargs_and_kwargs_exception_thrown = True