mirror of
https://github.com/python/cpython.git
synced 2024-11-24 18:34:43 +08:00
1a3faba9f1
* Remove '#include "structmember.h"'. * If needed, add <stddef.h> to get offsetof() function. * Update Parser/asdl_c.py to regenerate Python/Python-ast.c. * Replace: * T_SHORT => Py_T_SHORT * T_INT => Py_T_INT * T_LONG => Py_T_LONG * T_FLOAT => Py_T_FLOAT * T_DOUBLE => Py_T_DOUBLE * T_STRING => Py_T_STRING * T_OBJECT => _Py_T_OBJECT * T_CHAR => Py_T_CHAR * T_BYTE => Py_T_BYTE * T_UBYTE => Py_T_UBYTE * T_USHORT => Py_T_USHORT * T_UINT => Py_T_UINT * T_ULONG => Py_T_ULONG * T_STRING_INPLACE => Py_T_STRING_INPLACE * T_BOOL => Py_T_BOOL * T_OBJECT_EX => Py_T_OBJECT_EX * T_LONGLONG => Py_T_LONGLONG * T_ULONGLONG => Py_T_ULONGLONG * T_PYSSIZET => Py_T_PYSSIZET * T_NONE => _Py_T_NONE * READONLY => Py_READONLY * PY_AUDIT_READ => Py_AUDIT_READ * READ_RESTRICTED => Py_AUDIT_READ * PY_WRITE_RESTRICTED => _Py_WRITE_RESTRICTED * RESTRICTED => (READ_RESTRICTED | _Py_WRITE_RESTRICTED)
306 lines
9.2 KiB
C
306 lines
9.2 KiB
C
|
|
/* Map C struct members to Python object attributes */
|
|
|
|
#include "Python.h"
|
|
|
|
|
|
PyObject *
|
|
PyMember_GetOne(const char *obj_addr, PyMemberDef *l)
|
|
{
|
|
PyObject *v;
|
|
if (l->flags & Py_RELATIVE_OFFSET) {
|
|
PyErr_SetString(
|
|
PyExc_SystemError,
|
|
"PyMember_GetOne used with Py_RELATIVE_OFFSET");
|
|
return NULL;
|
|
}
|
|
|
|
const char* addr = obj_addr + l->offset;
|
|
switch (l->type) {
|
|
case Py_T_BOOL:
|
|
v = PyBool_FromLong(*(char*)addr);
|
|
break;
|
|
case Py_T_BYTE:
|
|
v = PyLong_FromLong(*(char*)addr);
|
|
break;
|
|
case Py_T_UBYTE:
|
|
v = PyLong_FromUnsignedLong(*(unsigned char*)addr);
|
|
break;
|
|
case Py_T_SHORT:
|
|
v = PyLong_FromLong(*(short*)addr);
|
|
break;
|
|
case Py_T_USHORT:
|
|
v = PyLong_FromUnsignedLong(*(unsigned short*)addr);
|
|
break;
|
|
case Py_T_INT:
|
|
v = PyLong_FromLong(*(int*)addr);
|
|
break;
|
|
case Py_T_UINT:
|
|
v = PyLong_FromUnsignedLong(*(unsigned int*)addr);
|
|
break;
|
|
case Py_T_LONG:
|
|
v = PyLong_FromLong(*(long*)addr);
|
|
break;
|
|
case Py_T_ULONG:
|
|
v = PyLong_FromUnsignedLong(*(unsigned long*)addr);
|
|
break;
|
|
case Py_T_PYSSIZET:
|
|
v = PyLong_FromSsize_t(*(Py_ssize_t*)addr);
|
|
break;
|
|
case Py_T_FLOAT:
|
|
v = PyFloat_FromDouble((double)*(float*)addr);
|
|
break;
|
|
case Py_T_DOUBLE:
|
|
v = PyFloat_FromDouble(*(double*)addr);
|
|
break;
|
|
case Py_T_STRING:
|
|
if (*(char**)addr == NULL) {
|
|
v = Py_NewRef(Py_None);
|
|
}
|
|
else
|
|
v = PyUnicode_FromString(*(char**)addr);
|
|
break;
|
|
case Py_T_STRING_INPLACE:
|
|
v = PyUnicode_FromString((char*)addr);
|
|
break;
|
|
case Py_T_CHAR:
|
|
v = PyUnicode_FromStringAndSize((char*)addr, 1);
|
|
break;
|
|
case _Py_T_OBJECT:
|
|
v = *(PyObject **)addr;
|
|
if (v == NULL)
|
|
v = Py_None;
|
|
Py_INCREF(v);
|
|
break;
|
|
case Py_T_OBJECT_EX:
|
|
v = *(PyObject **)addr;
|
|
if (v == NULL) {
|
|
PyObject *obj = (PyObject *)obj_addr;
|
|
PyTypeObject *tp = Py_TYPE(obj);
|
|
PyErr_Format(PyExc_AttributeError,
|
|
"'%.200s' object has no attribute '%s'",
|
|
tp->tp_name, l->name);
|
|
}
|
|
Py_XINCREF(v);
|
|
break;
|
|
case Py_T_LONGLONG:
|
|
v = PyLong_FromLongLong(*(long long *)addr);
|
|
break;
|
|
case Py_T_ULONGLONG:
|
|
v = PyLong_FromUnsignedLongLong(*(unsigned long long *)addr);
|
|
break;
|
|
case _Py_T_NONE:
|
|
v = Py_NewRef(Py_None);
|
|
break;
|
|
default:
|
|
PyErr_SetString(PyExc_SystemError, "bad memberdescr type");
|
|
v = NULL;
|
|
}
|
|
return v;
|
|
}
|
|
|
|
#define WARN(msg) \
|
|
do { \
|
|
if (PyErr_WarnEx(PyExc_RuntimeWarning, msg, 1) < 0) \
|
|
return -1; \
|
|
} while (0)
|
|
|
|
int
|
|
PyMember_SetOne(char *addr, PyMemberDef *l, PyObject *v)
|
|
{
|
|
PyObject *oldv;
|
|
if (l->flags & Py_RELATIVE_OFFSET) {
|
|
PyErr_SetString(
|
|
PyExc_SystemError,
|
|
"PyMember_SetOne used with Py_RELATIVE_OFFSET");
|
|
return -1;
|
|
}
|
|
|
|
addr += l->offset;
|
|
|
|
if ((l->flags & Py_READONLY))
|
|
{
|
|
PyErr_SetString(PyExc_AttributeError, "readonly attribute");
|
|
return -1;
|
|
}
|
|
if (v == NULL) {
|
|
if (l->type == Py_T_OBJECT_EX) {
|
|
/* Check if the attribute is set. */
|
|
if (*(PyObject **)addr == NULL) {
|
|
PyErr_SetString(PyExc_AttributeError, l->name);
|
|
return -1;
|
|
}
|
|
}
|
|
else if (l->type != _Py_T_OBJECT) {
|
|
PyErr_SetString(PyExc_TypeError,
|
|
"can't delete numeric/char attribute");
|
|
return -1;
|
|
}
|
|
}
|
|
switch (l->type) {
|
|
case Py_T_BOOL:{
|
|
if (!PyBool_Check(v)) {
|
|
PyErr_SetString(PyExc_TypeError,
|
|
"attribute value type must be bool");
|
|
return -1;
|
|
}
|
|
if (v == Py_True)
|
|
*(char*)addr = (char) 1;
|
|
else
|
|
*(char*)addr = (char) 0;
|
|
break;
|
|
}
|
|
case Py_T_BYTE:{
|
|
long long_val = PyLong_AsLong(v);
|
|
if ((long_val == -1) && PyErr_Occurred())
|
|
return -1;
|
|
*(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 Py_T_UBYTE:{
|
|
long long_val = PyLong_AsLong(v);
|
|
if ((long_val == -1) && PyErr_Occurred())
|
|
return -1;
|
|
*(unsigned char*)addr = (unsigned char)long_val;
|
|
if ((long_val > UCHAR_MAX) || (long_val < 0))
|
|
WARN("Truncation of value to unsigned char");
|
|
break;
|
|
}
|
|
case Py_T_SHORT:{
|
|
long long_val = PyLong_AsLong(v);
|
|
if ((long_val == -1) && PyErr_Occurred())
|
|
return -1;
|
|
*(short*)addr = (short)long_val;
|
|
if ((long_val > SHRT_MAX) || (long_val < SHRT_MIN))
|
|
WARN("Truncation of value to short");
|
|
break;
|
|
}
|
|
case Py_T_USHORT:{
|
|
long long_val = PyLong_AsLong(v);
|
|
if ((long_val == -1) && PyErr_Occurred())
|
|
return -1;
|
|
*(unsigned short*)addr = (unsigned short)long_val;
|
|
if ((long_val > USHRT_MAX) || (long_val < 0))
|
|
WARN("Truncation of value to unsigned short");
|
|
break;
|
|
}
|
|
case Py_T_INT:{
|
|
long long_val = PyLong_AsLong(v);
|
|
if ((long_val == -1) && PyErr_Occurred())
|
|
return -1;
|
|
*(int *)addr = (int)long_val;
|
|
if ((long_val > INT_MAX) || (long_val < INT_MIN))
|
|
WARN("Truncation of value to int");
|
|
break;
|
|
}
|
|
case Py_T_UINT:{
|
|
unsigned long ulong_val = PyLong_AsUnsignedLong(v);
|
|
if ((ulong_val == (unsigned long)-1) && PyErr_Occurred()) {
|
|
/* XXX: For compatibility, accept negative int values
|
|
as well. */
|
|
PyErr_Clear();
|
|
ulong_val = PyLong_AsLong(v);
|
|
if ((ulong_val == (unsigned long)-1) &&
|
|
PyErr_Occurred())
|
|
return -1;
|
|
*(unsigned int *)addr = (unsigned int)ulong_val;
|
|
WARN("Writing negative value into unsigned field");
|
|
} else
|
|
*(unsigned int *)addr = (unsigned int)ulong_val;
|
|
if (ulong_val > UINT_MAX)
|
|
WARN("Truncation of value to unsigned int");
|
|
break;
|
|
}
|
|
case Py_T_LONG:{
|
|
*(long*)addr = PyLong_AsLong(v);
|
|
if ((*(long*)addr == -1) && PyErr_Occurred())
|
|
return -1;
|
|
break;
|
|
}
|
|
case Py_T_ULONG:{
|
|
*(unsigned long*)addr = PyLong_AsUnsignedLong(v);
|
|
if ((*(unsigned long*)addr == (unsigned long)-1)
|
|
&& PyErr_Occurred()) {
|
|
/* XXX: For compatibility, accept negative int values
|
|
as well. */
|
|
PyErr_Clear();
|
|
*(unsigned long*)addr = PyLong_AsLong(v);
|
|
if ((*(unsigned long*)addr == (unsigned long)-1)
|
|
&& PyErr_Occurred())
|
|
return -1;
|
|
WARN("Writing negative value into unsigned field");
|
|
}
|
|
break;
|
|
}
|
|
case Py_T_PYSSIZET:{
|
|
*(Py_ssize_t*)addr = PyLong_AsSsize_t(v);
|
|
if ((*(Py_ssize_t*)addr == (Py_ssize_t)-1)
|
|
&& PyErr_Occurred())
|
|
return -1;
|
|
break;
|
|
}
|
|
case Py_T_FLOAT:{
|
|
double double_val = PyFloat_AsDouble(v);
|
|
if ((double_val == -1) && PyErr_Occurred())
|
|
return -1;
|
|
*(float*)addr = (float)double_val;
|
|
break;
|
|
}
|
|
case Py_T_DOUBLE:
|
|
*(double*)addr = PyFloat_AsDouble(v);
|
|
if ((*(double*)addr == -1) && PyErr_Occurred())
|
|
return -1;
|
|
break;
|
|
case _Py_T_OBJECT:
|
|
case Py_T_OBJECT_EX:
|
|
oldv = *(PyObject **)addr;
|
|
*(PyObject **)addr = Py_XNewRef(v);
|
|
Py_XDECREF(oldv);
|
|
break;
|
|
case Py_T_CHAR: {
|
|
const char *string;
|
|
Py_ssize_t len;
|
|
|
|
string = PyUnicode_AsUTF8AndSize(v, &len);
|
|
if (string == NULL || len != 1) {
|
|
PyErr_BadArgument();
|
|
return -1;
|
|
}
|
|
*(char*)addr = string[0];
|
|
break;
|
|
}
|
|
case Py_T_STRING:
|
|
case Py_T_STRING_INPLACE:
|
|
PyErr_SetString(PyExc_TypeError, "readonly attribute");
|
|
return -1;
|
|
case Py_T_LONGLONG:{
|
|
long long value;
|
|
*(long long*)addr = value = PyLong_AsLongLong(v);
|
|
if ((value == -1) && PyErr_Occurred())
|
|
return -1;
|
|
break;
|
|
}
|
|
case Py_T_ULONGLONG:{
|
|
unsigned long long value;
|
|
/* ??? PyLong_AsLongLong accepts an int, but PyLong_AsUnsignedLongLong
|
|
doesn't ??? */
|
|
if (PyLong_Check(v))
|
|
*(unsigned long long*)addr = value = PyLong_AsUnsignedLongLong(v);
|
|
else
|
|
*(unsigned long long*)addr = value = PyLong_AsLong(v);
|
|
if ((value == (unsigned long long)-1) && PyErr_Occurred())
|
|
return -1;
|
|
break;
|
|
}
|
|
default:
|
|
PyErr_Format(PyExc_SystemError,
|
|
"bad memberdescr type for %s", l->name);
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|