cindex/Python: Support file objects as unsaved_files, albeit inefficiently.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94418 91177308-0d34-0410-b5e6-96231b3b80d8

bindings/python/clang/cindex.py

@@ -553,7 +553,6 @@ class TranslationUnit(ClangObject):
         Construct a translation unit from the given source file, using
         the given command line argument.
         """
-        # TODO: Support unsaved files.
         arg_array = 0
         if len(args):
             arg_array = (c_char_p * len(args))(* args)
@@ -561,7 +560,13 @@ class TranslationUnit(ClangObject):
         if len(unsaved_files):
             unsaved_files_array = (_CXUnsavedFile * len(unsaved_files))()
             for i,(name,value) in enumerate(unsaved_files):
-                # FIXME: Support file objects.
+                if not isinstance(value, str):
+                    # FIXME: It would be great to support an efficient version
+                    # of this, one day.
+                    value = value.read()
+                    print value
+                if not isinstance(value, str):
+                    raise TypeError,'Unexpected unsaved file contents.'
                 unsaved_files_array[i].name = name
                 unsaved_files_array[i].contents = value
                 unsaved_files_array[i].length = len(value)

bindings/python/tests/cindex/test_translation_unit.py

@@ -41,3 +41,11 @@ int SOME_DEFINE;
     spellings = [c.spelling for c in tu.cursor.get_children()]
     assert spellings[-2] == 'x'
     assert spellings[-1] == 'y'
+
+def test_unsaved_files_2():
+    import StringIO
+    index = Index.create()
+    tu = index.parse('fake.c', unsaved_files = [
+            ('fake.c', StringIO.StringIO('int x;'))])
+    spellings = [c.spelling for c in tu.cursor.get_children()]
+    assert spellings[-1] == 'x'