[Python-checkins] cpython: Fast path for IncrementalNewlineDecoder.decode() in io.TextIOWrapper.read(-1)

[victor.stinner]

http://hg.python.org/cpython/rev/6a2ca77b2c07
changeset:   70380:6a2ca77b2c07
user:        Victor Stinner <victor.stinner at haypocalc.com>
date:        Wed May 25 22:01:33 2011 +0200
summary:
  Fast path for IncrementalNewlineDecoder.decode() in io.TextIOWrapper.read(-1)

Copy/paste code from textiowrapper_read_chunk().

files:
  Modules/_io/textio.c |  9 +++++++--
  1 files changed, 7 insertions(+), 2 deletions(-)


diff --git a/Modules/_io/textio.c b/Modules/_io/textio.c
--- a/Modules/_io/textio.c
+++ b/Modules/_io/textio.c
@@ -1513,8 +1513,13 @@
         PyObject *decoded;
         if (bytes == NULL)
             goto fail;
-        decoded = PyObject_CallMethodObjArgs(self->decoder, _PyIO_str_decode,
-                                             bytes, Py_True, NULL);
+
+        if (Py_TYPE(self->decoder) == &PyIncrementalNewlineDecoder_Type)
+            decoded = _PyIncrementalNewlineDecoder_decode(self->decoder,
+                                                          bytes, 1);
+        else
+            decoded = PyObject_CallMethodObjArgs(
+                self->decoder, _PyIO_str_decode, bytes, Py_True, NULL);
         Py_DECREF(bytes);
         if (decoded == NULL)
             goto fail;

-- 
Repository URL: http://hg.python.org/cpython