[cfe-commits] [PATCH 4/4] [clang.py] TranslationUnit API improvements

Manuel Klimek klimek at google.com
Sun May 6 22:39:39 PDT 2012

+    Unfortunately, the libclang library doesn't expose any additional error
+    information in this scenario.

Change to: FIXME: Make libclang expose additional error information in
this scenario :)

On Fri, May 4, 2012 at 7:31 PM, Gregory Szorc <gregory.szorc at gmail.com> wrote:
> On Mon, Apr 16, 2012 at 9:37 AM, Manuel Klimek <klimek at google.com> wrote:
>> I like the factory methods much better! Thanks :)
>> ERROR_OK is still in there though?
>> +        if isinstance(unsaved_files, dict):
>> +            for k, v in unsaved_files.iteritems():
>> +                unsaved_normalized.append((k, v))
>> unsaved_normalized = unsaved_files.items()
>> While I see how this is convenient, why do we not require a list and
>> let people outside call .items() if they have a dict? I kind of
>> dislike all this type specific code, but that's more a gut feeling
>> than being able to point my finger at problems.
>> Also, what happens if we pass parameters of incorrect type to
>> TranslationUnit_parse? All that type checking in python code seems
>> somewhat strange...
> I agree with what you said. Looking at the code now, I don't know what
> I was thinking :)

Hmm, there is still a lot of type checking in the code there... And
I'm still curious what would happen if we just assumed they all have
the right type - at least that's what most of the python code I know
does; would that crash when calling into the C-bindings?

> Issues addressed with attached patch. Sorry it took so long to respond.
> Since the time I created this patch, the behavior of
> clang_saveTranslationUnit has changed. Previously, if you created a TU
> with critical errors (like bad syntax), that API would return an error
> code. Now, it seems to return success and write the file. I marked the
> test that exercises the exception raising bits as skipped as a result.
> I'm trying to think of the best way to test this now. Perhaps try
> writing to a file without write permissions?

The easiest way I know to test file-open failures is write to a file
in a non-existent directory.


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