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typthon/Python/structmember.c
copilot-swe-agent[bot] 42e2356c88 Fix incorrect replacements in Py_ to Ty_ renaming 
Fixed several macros and constants that should not have been renamed:
- _Py_CAST, _Py_NULL, _Py_RVALUE (internal utility macros)
- Py_UNUSED (unused parameter macro)
- Py_EQ, Py_NE, Py_LT, Py_LE, Py_GT, Py_GE (comparison constants)
- Py_RETURN_* macros (NONE, TRUE, FALSE, NOTIMPLEMENTED, RICHCOMPARE)
- Py_READONLY, Py_ULL, Py_CONTEXT_SWITCHED
- TyGC_Head in generated clinic files

Build is still in progress with some remaining issues to resolve.

Co-authored-by: johndoe6345789 <224850594+johndoe6345789@users.noreply.github.com>
2025-12-29 17:44:05 +00:00

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/* Map C struct members to Python object attributes */
#include "Python.h"
#include "pycore_abstract.h" // _PyNumber_Index()
#include "pycore_long.h" // _TyLong_IsNegative()
#include "pycore_object.h" // _Ty_TryIncrefCompare(), FT_ATOMIC_*()
#include "pycore_critical_section.h"
static inline TyObject *
member_get_object(const char *addr, const char *obj_addr, TyMemberDef *l)
{
TyObject *v = FT_ATOMIC_LOAD_PTR(*(TyObject **) addr);
if (v == NULL) {
TyErr_Format(TyExc_AttributeError,
"'%T' object has no attribute '%s'",
(TyObject *)obj_addr, l->name);
}
return v;
}
TyObject *
PyMember_GetOne(const char *obj_addr, TyMemberDef *l)
{
TyObject *v;
if (l->flags & Ty_RELATIVE_OFFSET) {
TyErr_SetString(
TyExc_SystemError,
"PyMember_GetOne used with Ty_RELATIVE_OFFSET");
return NULL;
}
const char* addr = obj_addr + l->offset;
switch (l->type) {
case Ty_T_BOOL:
v = TyBool_FromLong(FT_ATOMIC_LOAD_CHAR_RELAXED(*(char*)addr));
break;
case Ty_T_BYTE:
v = TyLong_FromLong(FT_ATOMIC_LOAD_CHAR_RELAXED(*(char*)addr));
break;
case Ty_T_UBYTE:
v = TyLong_FromUnsignedLong(FT_ATOMIC_LOAD_UCHAR_RELAXED(*(unsigned char*)addr));
break;
case Ty_T_SHORT:
v = TyLong_FromLong(FT_ATOMIC_LOAD_SHORT_RELAXED(*(short*)addr));
break;
case Ty_T_USHORT:
v = TyLong_FromUnsignedLong(FT_ATOMIC_LOAD_USHORT_RELAXED(*(unsigned short*)addr));
break;
case Ty_T_INT:
v = TyLong_FromLong(FT_ATOMIC_LOAD_INT_RELAXED(*(int*)addr));
break;
case Ty_T_UINT:
v = TyLong_FromUnsignedLong(FT_ATOMIC_LOAD_UINT_RELAXED(*(unsigned int*)addr));
break;
case Ty_T_LONG:
v = TyLong_FromLong(FT_ATOMIC_LOAD_LONG_RELAXED(*(long*)addr));
break;
case Ty_T_ULONG:
v = TyLong_FromUnsignedLong(FT_ATOMIC_LOAD_ULONG_RELAXED(*(unsigned long*)addr));
break;
case Ty_T_PYSSIZET:
v = TyLong_FromSsize_t(FT_ATOMIC_LOAD_SSIZE_RELAXED(*(Ty_ssize_t*)addr));
break;
case Ty_T_FLOAT:
v = TyFloat_FromDouble((double)FT_ATOMIC_LOAD_FLOAT_RELAXED(*(float*)addr));
break;
case Ty_T_DOUBLE:
v = TyFloat_FromDouble(FT_ATOMIC_LOAD_DOUBLE_RELAXED(*(double*)addr));
break;
case Ty_T_STRING:
if (*(char**)addr == NULL) {
v = Ty_NewRef(Ty_None);
}
else
v = TyUnicode_FromString(*(char**)addr);
break;
case Ty_T_STRING_INPLACE:
v = TyUnicode_FromString((char*)addr);
break;
case Ty_T_CHAR: {
char char_val = FT_ATOMIC_LOAD_CHAR_RELAXED(*addr);
v = TyUnicode_FromStringAndSize(&char_val, 1);
break;
}
case _Ty_T_OBJECT:
v = FT_ATOMIC_LOAD_PTR(*(TyObject **) addr);
if (v != NULL) {
#ifdef Ty_GIL_DISABLED
if (!_Ty_TryIncrefCompare((TyObject **) addr, v)) {
Ty_BEGIN_CRITICAL_SECTION((TyObject *) obj_addr);
v = FT_ATOMIC_LOAD_PTR(*(TyObject **) addr);
Ty_XINCREF(v);
Ty_END_CRITICAL_SECTION();
}
#else
Ty_INCREF(v);
#endif
}
if (v == NULL) {
v = Ty_None;
}
break;
case Ty_T_OBJECT_EX:
v = member_get_object(addr, obj_addr, l);
#ifndef Ty_GIL_DISABLED
Ty_XINCREF(v);
#else
if (v != NULL) {
if (!_Ty_TryIncrefCompare((TyObject **) addr, v)) {
Ty_BEGIN_CRITICAL_SECTION((TyObject *) obj_addr);
v = member_get_object(addr, obj_addr, l);
Ty_XINCREF(v);
Ty_END_CRITICAL_SECTION();
}
}
#endif
break;
case Ty_T_LONGLONG:
v = TyLong_FromLongLong(FT_ATOMIC_LOAD_LLONG_RELAXED(*(long long *)addr));
break;
case Ty_T_ULONGLONG:
v = TyLong_FromUnsignedLongLong(FT_ATOMIC_LOAD_ULLONG_RELAXED(*(unsigned long long *)addr));
break;
case _Ty_T_NONE:
// doesn't require free-threading code path
v = Ty_NewRef(Ty_None);
break;
default:
TyErr_SetString(TyExc_SystemError, "bad memberdescr type");
v = NULL;
}
return v;
}
#define WARN(msg) \
do { \
if (TyErr_WarnEx(TyExc_RuntimeWarning, msg, 1) < 0) \
return -1; \
} while (0)
int
PyMember_SetOne(char *addr, TyMemberDef *l, TyObject *v)
{
TyObject *oldv;
if (l->flags & Ty_RELATIVE_OFFSET) {
TyErr_SetString(
TyExc_SystemError,
"PyMember_SetOne used with Ty_RELATIVE_OFFSET");
return -1;
}
#ifdef Ty_GIL_DISABLED
TyObject *obj = (TyObject *) addr;
#endif
addr += l->offset;
if ((l->flags & Py_READONLY))
{
TyErr_SetString(TyExc_AttributeError, "readonly attribute");
return -1;
}
if (v == NULL) {
if (l->type == Ty_T_OBJECT_EX) {
/* Check if the attribute is set. */
if (*(TyObject **)addr == NULL) {
TyErr_SetString(TyExc_AttributeError, l->name);
return -1;
}
}
else if (l->type != _Ty_T_OBJECT) {
TyErr_SetString(TyExc_TypeError,
"can't delete numeric/char attribute");
return -1;
}
}
switch (l->type) {
case Ty_T_BOOL:{
if (!TyBool_Check(v)) {
TyErr_SetString(TyExc_TypeError,
"attribute value type must be bool");
return -1;
}
if (v == Ty_True)
FT_ATOMIC_STORE_CHAR_RELAXED(*(char*)addr, 1);
else
FT_ATOMIC_STORE_CHAR_RELAXED(*(char*)addr, 0);
break;
}
case Ty_T_BYTE:{
long long_val = TyLong_AsLong(v);
if ((long_val == -1) && TyErr_Occurred())
return -1;
FT_ATOMIC_STORE_CHAR_RELAXED(*(char*)addr, (char)long_val);
/* XXX: For compatibility, only warn about truncations
for now. */
if ((long_val > CHAR_MAX) || (long_val < CHAR_MIN))
WARN("Truncation of value to char");
break;
}
case Ty_T_UBYTE:{
long long_val = TyLong_AsLong(v);
if ((long_val == -1) && TyErr_Occurred())
return -1;
FT_ATOMIC_STORE_UCHAR_RELAXED(*(unsigned char*)addr, (unsigned char)long_val);
if ((long_val > UCHAR_MAX) || (long_val < 0))
WARN("Truncation of value to unsigned char");
break;
}
case Ty_T_SHORT:{
long long_val = TyLong_AsLong(v);
if ((long_val == -1) && TyErr_Occurred())
return -1;
FT_ATOMIC_STORE_SHORT_RELAXED(*(short*)addr, (short)long_val);
if ((long_val > SHRT_MAX) || (long_val < SHRT_MIN))
WARN("Truncation of value to short");
break;
}
case Ty_T_USHORT:{
long long_val = TyLong_AsLong(v);
if ((long_val == -1) && TyErr_Occurred())
return -1;
FT_ATOMIC_STORE_USHORT_RELAXED(*(unsigned short*)addr, (unsigned short)long_val);
if ((long_val > USHRT_MAX) || (long_val < 0))
WARN("Truncation of value to unsigned short");
break;
}
case Ty_T_INT:{
long long_val = TyLong_AsLong(v);
if ((long_val == -1) && TyErr_Occurred())
return -1;
FT_ATOMIC_STORE_INT_RELAXED(*(int *)addr, (int)long_val);
if ((long_val > INT_MAX) || (long_val < INT_MIN))
WARN("Truncation of value to int");
break;
}
case Ty_T_UINT: {
/* XXX: For compatibility, accept negative int values
as well. */
v = _PyNumber_Index(v);
if (v == NULL) {
return -1;
}
if (_TyLong_IsNegative((PyLongObject *)v)) {
long long_val = TyLong_AsLong(v);
Ty_DECREF(v);
if (long_val == -1 && TyErr_Occurred()) {
return -1;
}
FT_ATOMIC_STORE_UINT_RELAXED(*(unsigned int *)addr, (unsigned int)(unsigned long)long_val);
WARN("Writing negative value into unsigned field");
}
else {
unsigned long ulong_val = TyLong_AsUnsignedLong(v);
Ty_DECREF(v);
if (ulong_val == (unsigned long)-1 && TyErr_Occurred()) {
return -1;
}
FT_ATOMIC_STORE_UINT_RELAXED(*(unsigned int *)addr, (unsigned int)ulong_val);
if (ulong_val > UINT_MAX) {
WARN("Truncation of value to unsigned int");
}
}
break;
}
case Ty_T_LONG: {
const long long_val = TyLong_AsLong(v);
if ((long_val == -1) && TyErr_Occurred())
return -1;
FT_ATOMIC_STORE_LONG_RELAXED(*(long*)addr, long_val);
break;
}
case Ty_T_ULONG: {
/* XXX: For compatibility, accept negative int values
as well. */
v = _PyNumber_Index(v);
if (v == NULL) {
return -1;
}
if (_TyLong_IsNegative((PyLongObject *)v)) {
long long_val = TyLong_AsLong(v);
Ty_DECREF(v);
if (long_val == -1 && TyErr_Occurred()) {
return -1;
}
FT_ATOMIC_STORE_ULONG_RELAXED(*(unsigned long *)addr, (unsigned long)long_val);
WARN("Writing negative value into unsigned field");
}
else {
unsigned long ulong_val = TyLong_AsUnsignedLong(v);
Ty_DECREF(v);
if (ulong_val == (unsigned long)-1 && TyErr_Occurred()) {
return -1;
}
FT_ATOMIC_STORE_ULONG_RELAXED(*(unsigned long *)addr, ulong_val);
}
break;
}
case Ty_T_PYSSIZET: {
const Ty_ssize_t ssize_val = TyLong_AsSsize_t(v);
if ((ssize_val == (Ty_ssize_t)-1) && TyErr_Occurred())
return -1;
FT_ATOMIC_STORE_SSIZE_RELAXED(*(Ty_ssize_t*)addr, ssize_val);
break;
}
case Ty_T_FLOAT:{
double double_val = TyFloat_AsDouble(v);
if ((double_val == -1) && TyErr_Occurred())
return -1;
FT_ATOMIC_STORE_FLOAT_RELAXED(*(float*)addr, (float)double_val);
break;
}
case Ty_T_DOUBLE: {
const double double_val = TyFloat_AsDouble(v);
if ((double_val == -1) && TyErr_Occurred())
return -1;
FT_ATOMIC_STORE_DOUBLE_RELAXED(*(double *) addr, double_val);
break;
}
case _Ty_T_OBJECT:
case Ty_T_OBJECT_EX:
Ty_BEGIN_CRITICAL_SECTION(obj);
oldv = *(TyObject **)addr;
FT_ATOMIC_STORE_PTR_RELEASE(*(TyObject **)addr, Ty_XNewRef(v));
Ty_END_CRITICAL_SECTION();
Ty_XDECREF(oldv);
break;
case Ty_T_CHAR: {
const char *string;
Ty_ssize_t len;
string = TyUnicode_AsUTF8AndSize(v, &len);
if (string == NULL || len != 1) {
TyErr_BadArgument();
return -1;
}
FT_ATOMIC_STORE_CHAR_RELAXED(*(char*)addr, string[0]);
break;
}
case Ty_T_STRING:
case Ty_T_STRING_INPLACE:
TyErr_SetString(TyExc_TypeError, "readonly attribute");
return -1;
case Ty_T_LONGLONG:{
long long value = TyLong_AsLongLong(v);
if ((value == -1) && TyErr_Occurred())
return -1;
FT_ATOMIC_STORE_LLONG_RELAXED(*(long long*)addr, value);
break;
}
case Ty_T_ULONGLONG: {
v = _PyNumber_Index(v);
if (v == NULL) {
return -1;
}
if (_TyLong_IsNegative((PyLongObject *)v)) {
long long_val = TyLong_AsLong(v);
Ty_DECREF(v);
if (long_val == -1 && TyErr_Occurred()) {
return -1;
}
FT_ATOMIC_STORE_ULLONG_RELAXED(*(unsigned long long *)addr, (unsigned long long)(long long)long_val);
WARN("Writing negative value into unsigned field");
}
else {
unsigned long long ulonglong_val = TyLong_AsUnsignedLongLong(v);
Ty_DECREF(v);
if (ulonglong_val == (unsigned long long)-1 && TyErr_Occurred()) {
return -1;
}
FT_ATOMIC_STORE_ULLONG_RELAXED(*(unsigned long long *)addr, ulonglong_val);
}
break;
}
default:
TyErr_Format(TyExc_SystemError,
"bad memberdescr type for %s", l->name);
return -1;
}
return 0;
}
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