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gh-95534: Convert ZlibDecompressor.__new__ to AC #137923

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Merged
merged 3 commits into from
Aug 19, 2025
Merged

gh-95534: Convert ZlibDecompressor.__new__ to AC #137923

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48c2acb
Convert ZlibDecompressor.__new__ to AC
AA-Turner Aug 18, 2025
12c7a0c
Remove ``type as cls``
AA-Turner Aug 18, 2025
8a43485
Tran's review
AA-Turner Aug 18, 2025
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97 changes: 89 additions & 8 deletions Modules/clinic/zlibmodule.c.h
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67 changes: 29 additions & 38 deletions Modules/zlibmodule.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1369,9 +1369,9 @@ typedef struct {
} ZlibDecompressor;

/*[clinic input]
class zlib.ZlibDecompressor "ZlibDecompressor *" "&ZlibDecompressorType"
class zlib._ZlibDecompressor "ZlibDecompressor *" "&ZlibDecompressorType"
[clinic start generated code]*/
/*[clinic end generated code: output=da39a3ee5e6b4b0d input=0658178ab94645df]*/
/*[clinic end generated code: output=da39a3ee5e6b4b0d input=49151d1d703e6bcc]*/

static void
ZlibDecompressor_dealloc(PyObject *op)
Expand Down Expand Up @@ -1670,7 +1670,7 @@ decompress(ZlibDecompressor *self, uint8_t *data,

/*[clinic input]
@permit_long_docstring_body
zlib.ZlibDecompressor.decompress
zlib._ZlibDecompressor.decompress

data: Py_buffer
max_length: Py_ssize_t=-1
Expand All @@ -1692,9 +1692,10 @@ the unused_data attribute.
[clinic start generated code]*/

static PyObject *
zlib_ZlibDecompressor_decompress_impl(ZlibDecompressor *self,
Py_buffer *data, Py_ssize_t max_length)
/*[clinic end generated code: output=990d32787b775f85 input=fcf9f974de5d02b1]*/
zlib__ZlibDecompressor_decompress_impl(ZlibDecompressor *self,
Py_buffer *data,
Py_ssize_t max_length)
/*[clinic end generated code: output=ac00dcf73e843e99 input=c9278e791be1152b]*/

{
PyObject *result = NULL;
Expand All @@ -1710,38 +1711,28 @@ zlib_ZlibDecompressor_decompress_impl(ZlibDecompressor *self,
return result;
}

PyDoc_STRVAR(ZlibDecompressor__new____doc__,
"_ZlibDecompressor(wbits=15, zdict=b\'\')\n"
"--\n"
"\n"
"Create a decompressor object for decompressing data incrementally.\n"
"\n"
" wbits = 15\n"
" zdict\n"
" The predefined compression dictionary. This is a sequence of bytes\n"
" (such as a bytes object) containing subsequences that are expected\n"
" to occur frequently in the data that is to be compressed. Those\n"
" subsequences that are expected to be most common should come at the\n"
" end of the dictionary. This must be the same dictionary as used by the\n"
" compressor that produced the input data.\n"
"\n");
/*[clinic input]
@classmethod
zlib._ZlibDecompressor.__new__

wbits: int(c_default='MAX_WBITS') = MAX_WBITS
zdict: object(c_default='NULL') = b''
The predefined compression dictionary. This is a sequence of bytes
(such as a bytes object) containing subsequences that are expected
to occur frequently in the data that is to be compressed. Those
subsequences that are expected to be most common should come at the
end of the dictionary. This must be the same dictionary as used by the
compressor that produced the input data.

Create a decompressor object for decompressing data incrementally.
[clinic start generated code]*/

static PyObject *
ZlibDecompressor__new__(PyTypeObject *cls,
PyObject *args,
PyObject *kwargs)
zlib__ZlibDecompressor_impl(PyTypeObject *type, int wbits, PyObject *zdict)
/*[clinic end generated code: output=1065607df0d33baa input=9ebad0be6de226e2]*/
{
static char *keywords[] = {"wbits", "zdict", NULL};
static const char * const format = "|iO:_ZlibDecompressor";
int wbits = MAX_WBITS;
PyObject *zdict = NULL;
zlibstate *state = PyType_GetModuleState(cls);

if (!PyArg_ParseTupleAndKeywords(
args, kwargs, format, keywords, &wbits, &zdict)) {
return NULL;
}
ZlibDecompressor *self = PyObject_New(ZlibDecompressor, cls);
zlibstate *state = PyType_GetModuleState(type);
ZlibDecompressor *self = PyObject_New(ZlibDecompressor, type);
if (self == NULL) {
return NULL;
}
Expand Down Expand Up @@ -1817,7 +1808,7 @@ static PyMethodDef Decomp_methods[] =
};

static PyMethodDef ZlibDecompressor_methods[] = {
ZLIB_ZLIBDECOMPRESSOR_DECOMPRESS_METHODDEF
ZLIB__ZLIBDECOMPRESSOR_DECOMPRESS_METHODDEF
{NULL}
};

Expand Down Expand Up @@ -2052,8 +2043,8 @@ static PyType_Spec Decomptype_spec = {
static PyType_Slot ZlibDecompressor_type_slots[] = {
{Py_tp_dealloc, ZlibDecompressor_dealloc},
{Py_tp_members, ZlibDecompressor_members},
{Py_tp_new, ZlibDecompressor__new__},
{Py_tp_doc, (char *)ZlibDecompressor__new____doc__},
{Py_tp_new, zlib__ZlibDecompressor},
{Py_tp_doc, (char *)zlib__ZlibDecompressor__doc__},
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This is something separate, but I think AC should give the possibility to create docstrings for class and module directives as well.

{Py_tp_methods, ZlibDecompressor_methods},
{0, 0},
};
Expand Down
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