From 90ae14efcdde02de9bfe3f70fabdabc535674ae1 Mon Sep 17 00:00:00 2001
From: Julian Oes <julian@oes.ch>
Date: Thu, 4 Oct 2018 08:44:48 +0200
Subject: [PATCH] dsdl_compiler: check for StopIteration exception

This fixes the exception happening with Python 3.7.

I'm assuming this has to do with:
https://www.python.org/dev/peps/pep-0479/
---
 libuavcan/dsdl_compiler/libuavcan_dsdl_compiler/__init__.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/libuavcan/dsdl_compiler/libuavcan_dsdl_compiler/__init__.py b/libuavcan/dsdl_compiler/libuavcan_dsdl_compiler/__init__.py
index 913f88c0e2..eaddd0a9b0 100644
--- a/libuavcan/dsdl_compiler/libuavcan_dsdl_compiler/__init__.py
+++ b/libuavcan/dsdl_compiler/libuavcan_dsdl_compiler/__init__.py
@@ -298,7 +298,10 @@ def make_template_expander(filename):
         def enum_last_value(iterable, start=0):
             it = iter(iterable)
             count = start
-            last = next(it)
+            try:
+                last = next(it)
+            except StopIteration:
+                return
             for val in it:
                 yield count, False, last
                 last = val