From 0a65decbb772e3f5f431a94ec0b8110795b8a1df Mon Sep 17 00:00:00 2001
From: Xin Li <yakumolx@gmail.com>
Date: Wed, 11 Jan 2017 05:00:34 +0800
Subject: [PATCH] Handle empty tuple (#95)

---
 include/nnvm/tuple.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/include/nnvm/tuple.h b/include/nnvm/tuple.h
index 41e74c8f8fe4..3de9a910ee6f 100644
--- a/include/nnvm/tuple.h
+++ b/include/nnvm/tuple.h
@@ -233,6 +233,15 @@ class Tuple {
         return is;
     }
     }
+    // Handle empty tuple
+    while (isspace(is.peek())) {
+      is.get();
+    }
+    if (is.peek() == ')') {
+      is.get();
+      return is;
+    }
+    // Handle non-empty tuple
     ValueType idx;
     std::vector<ValueType> tmp;
     while (is >> idx) {