[Python-checkins] bpo-36346: array: Don't use deprecated APIs (GH-19653)
Inada Naoki
webhook-mailer at python.org
Mon May 11 02:37:33 EDT 2020
https://github.com/python/cpython/commit/d5d9a718662e67e2b1ac7874dda9df2d8d71d415
commit: d5d9a718662e67e2b1ac7874dda9df2d8d71d415
branch: master
author: Inada Naoki <songofacandy at gmail.com>
committer: GitHub <noreply at github.com>
date: 2020-05-11T15:37:25+09:00
summary:
bpo-36346: array: Don't use deprecated APIs (GH-19653)
* Py_UNICODE -> wchar_t
* Py_UNICODE -> unicode in Argument Clinic
* PyUnicode_AsUnicode -> PyUnicode_AsWideCharString
* Don't use "u#" format.
Co-authored-by: Victor Stinner <vstinner at python.org>
files:
M Doc/library/array.rst
M Doc/whatsnew/3.9.rst
M Modules/arraymodule.c
M Modules/clinic/arraymodule.c.h
diff --git a/Doc/library/array.rst b/Doc/library/array.rst
index c9a9b1dabb2a7..78020738bf4f7 100644
--- a/Doc/library/array.rst
+++ b/Doc/library/array.rst
@@ -22,7 +22,7 @@ defined:
+-----------+--------------------+-------------------+-----------------------+-------+
| ``'B'`` | unsigned char | int | 1 | |
+-----------+--------------------+-------------------+-----------------------+-------+
-| ``'u'`` | Py_UNICODE | Unicode character | 2 | \(1) |
+| ``'u'`` | wchar_t | Unicode character | 2 | \(1) |
+-----------+--------------------+-------------------+-----------------------+-------+
| ``'h'`` | signed short | int | 2 | |
+-----------+--------------------+-------------------+-----------------------+-------+
@@ -48,15 +48,16 @@ defined:
Notes:
(1)
- The ``'u'`` type code corresponds to Python's obsolete unicode character
- (:c:type:`Py_UNICODE` which is :c:type:`wchar_t`). Depending on the
- platform, it can be 16 bits or 32 bits.
+ It can be 16 bits or 32 bits depending on the platform.
- ``'u'`` will be removed together with the rest of the :c:type:`Py_UNICODE`
- API.
+ .. versionchanged:: 3.9
+ ``array('u')`` now uses ``wchar_t`` as C type instead of deprecated
+ ``Py_UNICODE``. This change doesn't affect to its behavior because
+ ``Py_UNICODE`` is alias of ``wchar_t`` since Python 3.3.
.. deprecated-removed:: 3.3 4.0
+
The actual representation of values is determined by the machine architecture
(strictly speaking, by the C implementation). The actual size can be accessed
through the :attr:`itemsize` attribute.
diff --git a/Doc/whatsnew/3.9.rst b/Doc/whatsnew/3.9.rst
index 11e577baa8fb5..c57d702dce867 100644
--- a/Doc/whatsnew/3.9.rst
+++ b/Doc/whatsnew/3.9.rst
@@ -786,6 +786,12 @@ Changes in the Python API
``PyCF_ALLOW_TOP_LEVEL_AWAIT`` was clashing with ``CO_FUTURE_DIVISION``.
(Contributed by Batuhan Taskaya in :issue:`39562`)
+* ``array('u')`` now uses ``wchar_t`` as C type instead of ``Py_UNICODE``.
+ This change doesn't affect to its behavior because ``Py_UNICODE`` is alias
+ of ``wchar_t`` since Python 3.3.
+ (Contributed by Inada Naoki in :issue:`34538`.)
+
+
CPython bytecode changes
------------------------
diff --git a/Modules/arraymodule.c b/Modules/arraymodule.c
index 4920ad7b82124..732703e481adc 100644
--- a/Modules/arraymodule.c
+++ b/Modules/arraymodule.c
@@ -235,24 +235,31 @@ BB_setitem(arrayobject *ap, Py_ssize_t i, PyObject *v)
static PyObject *
u_getitem(arrayobject *ap, Py_ssize_t i)
{
- return PyUnicode_FromOrdinal(((Py_UNICODE *) ap->ob_item)[i]);
+ return PyUnicode_FromOrdinal(((wchar_t *) ap->ob_item)[i]);
}
static int
u_setitem(arrayobject *ap, Py_ssize_t i, PyObject *v)
{
- Py_UNICODE *p;
- Py_ssize_t len;
-
- if (!PyArg_Parse(v, "u#;array item must be unicode character", &p, &len))
+ PyObject *u;
+ if (!PyArg_Parse(v, "U;array item must be unicode character", &u)) {
return -1;
- if (len != 1) {
+ }
+
+ Py_ssize_t len = PyUnicode_AsWideChar(u, NULL, 0);
+ if (len != 2) {
PyErr_SetString(PyExc_TypeError,
"array item must be unicode character");
return -1;
}
- if (i >= 0)
- ((Py_UNICODE *)ap->ob_item)[i] = p[0];
+
+ wchar_t w;
+ len = PyUnicode_AsWideChar(u, &w, 1);
+ assert(len == 1);
+
+ if (i >= 0) {
+ ((wchar_t *)ap->ob_item)[i] = w;
+ }
return 0;
}
@@ -530,7 +537,7 @@ d_setitem(arrayobject *ap, Py_ssize_t i, PyObject *v)
DEFINE_COMPAREITEMS(b, signed char)
DEFINE_COMPAREITEMS(BB, unsigned char)
-DEFINE_COMPAREITEMS(u, Py_UNICODE)
+DEFINE_COMPAREITEMS(u, wchar_t)
DEFINE_COMPAREITEMS(h, short)
DEFINE_COMPAREITEMS(HH, unsigned short)
DEFINE_COMPAREITEMS(i, int)
@@ -548,7 +555,7 @@ DEFINE_COMPAREITEMS(QQ, unsigned long long)
static const struct arraydescr descriptors[] = {
{'b', 1, b_getitem, b_setitem, b_compareitems, "b", 1, 1},
{'B', 1, BB_getitem, BB_setitem, BB_compareitems, "B", 1, 0},
- {'u', sizeof(Py_UNICODE), u_getitem, u_setitem, u_compareitems, "u", 0, 0},
+ {'u', sizeof(wchar_t), u_getitem, u_setitem, u_compareitems, "u", 0, 0},
{'h', sizeof(short), h_getitem, h_setitem, h_compareitems, "h", 1, 1},
{'H', sizeof(short), HH_getitem, HH_setitem, HH_compareitems, "H", 1, 0},
{'i', sizeof(int), i_getitem, i_setitem, i_compareitems, "i", 1, 1},
@@ -1660,7 +1667,7 @@ array_array_tobytes_impl(arrayobject *self)
/*[clinic input]
array.array.fromunicode
- ustr: Py_UNICODE(zeroes=True)
+ ustr: unicode
/
Extends this array with data from the unicode string ustr.
@@ -1671,25 +1678,28 @@ some other type.
[clinic start generated code]*/
static PyObject *
-array_array_fromunicode_impl(arrayobject *self, const Py_UNICODE *ustr,
- Py_ssize_clean_t ustr_length)
-/*[clinic end generated code: output=cf2f662908e2befc input=150f00566ffbca6e]*/
+array_array_fromunicode_impl(arrayobject *self, PyObject *ustr)
+/*[clinic end generated code: output=24359f5e001a7f2b input=025db1fdade7a4ce]*/
{
- char typecode;
-
- typecode = self->ob_descr->typecode;
- if (typecode != 'u') {
+ if (self->ob_descr->typecode != 'u') {
PyErr_SetString(PyExc_ValueError,
"fromunicode() may only be called on "
"unicode type arrays");
return NULL;
}
- if (ustr_length > 0) {
+
+ Py_ssize_t ustr_length = PyUnicode_AsWideChar(ustr, NULL, 0);
+ assert(ustr_length > 0);
+ if (ustr_length > 1) {
+ ustr_length--; /* trim trailing NUL character */
Py_ssize_t old_size = Py_SIZE(self);
- if (array_resize(self, old_size + ustr_length) == -1)
+ if (array_resize(self, old_size + ustr_length) == -1) {
return NULL;
- memcpy(self->ob_item + old_size * sizeof(Py_UNICODE),
- ustr, ustr_length * sizeof(Py_UNICODE));
+ }
+
+ // must not fail
+ PyUnicode_AsWideChar(
+ ustr, ((wchar_t *)self->ob_item) + old_size, ustr_length);
}
Py_RETURN_NONE;
@@ -1709,14 +1719,12 @@ static PyObject *
array_array_tounicode_impl(arrayobject *self)
/*[clinic end generated code: output=08e442378336e1ef input=127242eebe70b66d]*/
{
- char typecode;
- typecode = self->ob_descr->typecode;
- if (typecode != 'u') {
+ if (self->ob_descr->typecode != 'u') {
PyErr_SetString(PyExc_ValueError,
"tounicode() may only be called on unicode type arrays");
return NULL;
}
- return PyUnicode_FromWideChar((Py_UNICODE *) self->ob_item, Py_SIZE(self));
+ return PyUnicode_FromWideChar((wchar_t *) self->ob_item, Py_SIZE(self));
}
/*[clinic input]
@@ -2675,30 +2683,20 @@ array_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
Py_DECREF(v);
}
else if (initial != NULL && PyUnicode_Check(initial)) {
- Py_UNICODE *ustr;
Py_ssize_t n;
-
- ustr = PyUnicode_AsUnicode(initial);
+ wchar_t *ustr = PyUnicode_AsWideCharString(initial, &n);
if (ustr == NULL) {
- PyErr_NoMemory();
Py_DECREF(a);
return NULL;
}
- n = PyUnicode_GET_DATA_SIZE(initial);
if (n > 0) {
arrayobject *self = (arrayobject *)a;
- char *item = self->ob_item;
- item = (char *)PyMem_Realloc(item, n);
- if (item == NULL) {
- PyErr_NoMemory();
- Py_DECREF(a);
- return NULL;
- }
- self->ob_item = item;
- Py_SET_SIZE(self, n / sizeof(Py_UNICODE));
- memcpy(item, ustr, n);
- self->allocated = Py_SIZE(self);
+ // self->ob_item may be NULL but it is safe.
+ PyMem_Free(self->ob_item);
+ self->ob_item = (char *)ustr;
+ Py_SET_SIZE(self, n);
+ self->allocated = n;
}
}
else if (initial != NULL && array_Check(initial) && len > 0) {
diff --git a/Modules/clinic/arraymodule.c.h b/Modules/clinic/arraymodule.c.h
index e1f4b0397b9cb..b9245ca91d5fa 100644
--- a/Modules/clinic/arraymodule.c.h
+++ b/Modules/clinic/arraymodule.c.h
@@ -380,20 +380,23 @@ PyDoc_STRVAR(array_array_fromunicode__doc__,
{"fromunicode", (PyCFunction)array_array_fromunicode, METH_O, array_array_fromunicode__doc__},
static PyObject *
-array_array_fromunicode_impl(arrayobject *self, const Py_UNICODE *ustr,
- Py_ssize_clean_t ustr_length);
+array_array_fromunicode_impl(arrayobject *self, PyObject *ustr);
static PyObject *
array_array_fromunicode(arrayobject *self, PyObject *arg)
{
PyObject *return_value = NULL;
- const Py_UNICODE *ustr;
- Py_ssize_clean_t ustr_length;
+ PyObject *ustr;
- if (!PyArg_Parse(arg, "u#:fromunicode", &ustr, &ustr_length)) {
+ if (!PyUnicode_Check(arg)) {
+ _PyArg_BadArgument("fromunicode", "argument", "str", arg);
goto exit;
}
- return_value = array_array_fromunicode_impl(self, ustr, ustr_length);
+ if (PyUnicode_READY(arg) == -1) {
+ goto exit;
+ }
+ ustr = arg;
+ return_value = array_array_fromunicode_impl(self, ustr);
exit:
return return_value;
@@ -531,4 +534,4 @@ PyDoc_STRVAR(array_arrayiterator___setstate____doc__,
#define ARRAY_ARRAYITERATOR___SETSTATE___METHODDEF \
{"__setstate__", (PyCFunction)array_arrayiterator___setstate__, METH_O, array_arrayiterator___setstate____doc__},
-/*[clinic end generated code: output=f649fc0bc9f6b13a input=a9049054013a1b77]*/
+/*[clinic end generated code: output=9f70748dd3bc532f input=a9049054013a1b77]*/
More information about the Python-checkins
mailing list