From ae6e9970986472994e0e40ad2eecb7308fca2ed7 Mon Sep 17 00:00:00 2001
From: David Halter <davidhalter88@gmail.com>
Date: Fri, 16 Aug 2013 11:12:35 +0430
Subject: [PATCH] do some sort of error handling in fast_parser, because if
 fast_parser cracks down, cache might be corrupted

---
 jedi/fast_parser.py | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/jedi/fast_parser.py b/jedi/fast_parser.py
index 37c22d30..84ee8927 100644
--- a/jedi/fast_parser.py
+++ b/jedi/fast_parser.py
@@ -192,7 +192,12 @@ class FastParser(use_metaclass(CachedFastParser)):
         self.module = Module(self.parsers)
         self.reset_caches()
 
-        self._parse(code)
+        try:
+            self._parse(code)
+        except:
+            # FastParser is cached, be careful with exceptions
+            self.parsers[:] = []
+            raise
 
     @property
     def user_scope(self):
@@ -221,7 +226,13 @@ class FastParser(use_metaclass(CachedFastParser)):
         self.user_position = user_position
         self.reset_caches()
 
-        self._parse(code)
+
+        try:
+            self._parse(code)
+        except:
+            # FastParser is cached, be careful with exceptions
+            self.parsers[:] = []
+            raise
 
     def _scan_user_scope(self, sub_module):
         """ Scan with self.user_position. """