Add Python 3 support to clang.cindex

Summary:
Introduce an interop string to convert from unicode to c-strings where needed.
Add missing conversions from _CXString to strings in function registrations.
Explicitly evaluate lists where Python 3's lazy iterators would not otherwise do so.

This is an improvement upon the reverted change proposed in https://reviews.llvm.org/D26082

Reviewers: compnerd, skalinichev, modocache, MathieuDuponchelle

Reviewed By: compnerd

Subscribers: cfe-commits

Tags: #clang-c

Differential Revision: https://reviews.llvm.org/D31568

llvm-svn: 300829

1 files changed, 5 insertions, 2 deletions

diff --git a/clang/bindings/python/tests/cindex/test_translation_unit.py b/clang/bindings/python/tests/cindex/test_translation_unit.py
index be6cd671ae0..65d1ee02ffa 100644
--- a/clang/bindings/python/tests/cindex/test_translation_unit.py
+++ b/clang/bindings/python/tests/cindex/test_translation_unit.py
@@ -59,9 +59,12 @@ int SOME_DEFINE;
     assert spellings[-1] == 'y'
 
 def test_unsaved_files_2():
-    import StringIO
+    try:
+        from StringIO import StringIO
+    except:
+        from io import StringIO
     tu = TranslationUnit.from_source('fake.c', unsaved_files = [
-            ('fake.c', StringIO.StringIO('int x;'))])
+            ('fake.c', StringIO('int x;'))])
     spellings = [c.spelling for c in tu.cursor.get_children()]
     assert spellings[-1] == 'x'