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bpo-36346: array: Don't use deprecated APIs (GH-19653)

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* 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@python.org>
This commit is contained in:
Inada Naoki 2020-05-11 15:37:25 +09:00 committed by GitHub
parent 6067d4bc3c
commit d5d9a71866
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GPG key ID: 4AEE18F83AFDEB23
4 changed files with 63 additions and 55 deletions
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13
Doc/library/array.rst
View file

@ -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.

6
Doc/whatsnew/3.9.rst
View file

@ -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
------------------------

82
Modules/arraymodule.c
View file

@ -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) {

17
Modules/clinic/arraymodule.c.h generated
View file

@ -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]*/