Convert tuples to lists before encoding them

The `json` module in Python 2.6 functions in a similar fashion:

    >>> json.dumps([(2,3,)])
    '[[2, 3]]'
    >>>

Reported by indigoviolet in issue #8

Change-Id: Ia5f0b649d137e42a692a38b52ccff71874dd4c71

encoder.c

@@ -105,6 +105,19 @@ static yajl_gen_status ProcessObject(_YajlEncoder *self, PyObject *object)
         status = yajl_gen_array_close(handle);
         return status;
     }
+    if (PyTuple_Check(object)) {
+        /*
+         * If we have a tuple, convert to a list
+         */
+        Py_ssize_t size = PyTuple_Size(object);
+        PyObject *converted = PyList_New(size);
+        unsigned int i = 0;
+
+        for (; i < size; ++i) {
+            PyList_SET_ITEM(converted, (Py_ssize_t)(i), PyTuple_GetItem(object, i));
+        }
+        return ProcessObject(self, converted);
+    }
     if (PyDict_Check(object)) {
         PyObject *key, *value;
         Py_ssize_t position = 0;

tests/unit.py

@@ -202,6 +202,15 @@ def test_none_indent(self):
         self.assertEquals(self.stream.getvalue(), '{"foo":"bar"}')
 
 
+class IssueEightTest(unittest.TestCase):
+    def runTest(self):
+        ''' http://github.com/rtyler/py-yajl/issues#issue/8 '''
+        encoded = yajl.dumps([(2,3,)])
+        decoded = yajl.loads(encoded)
+        self.assertEquals(len(decoded), 1)
+        self.assertEquals(decoded[0][0], 2)
+        self.assertEquals(decoded[0][1], 3)
+
 if __name__ == '__main__':
     verbosity = '-v' in sys.argv and 2 or 1
     runner = unittest.TextTestRunner(verbosity=verbosity)