2 /* Map C struct members to Python object attributes */
6 #include "structmember.h"
9 listmembers(struct memberlist
*mlist
)
13 for (n
= 0; mlist
[n
].name
!= NULL
; n
++)
17 for (i
= 0; i
< n
; i
++)
19 PyString_FromString(mlist
[i
].name
));
20 if (PyErr_Occurred()) {
32 PyMember_Get(const char *addr
, struct memberlist
*mlist
, const char *name
)
36 if (strcmp(name
, "__members__") == 0)
37 return listmembers(mlist
);
38 for (l
= mlist
; l
->name
!= NULL
; l
++) {
39 if (strcmp(l
->name
, name
) == 0) {
43 copy
.offset
= l
->offset
;
44 copy
.flags
= l
->flags
;
46 return PyMember_GetOne(addr
, ©
);
49 PyErr_SetString(PyExc_AttributeError
, name
);
54 PyMember_GetOne(const char *addr
, PyMemberDef
*l
)
57 if ((l
->flags
& READ_RESTRICTED
) &&
58 PyEval_GetRestricted()) {
59 PyErr_SetString(PyExc_RuntimeError
, "restricted attribute");
65 v
= PyInt_FromLong(*(char*)addr
);
68 v
= PyLong_FromUnsignedLong(*(unsigned char*)addr
);
71 v
= PyInt_FromLong(*(short*)addr
);
74 v
= PyLong_FromUnsignedLong(*(unsigned short*)addr
);
77 v
= PyInt_FromLong(*(int*)addr
);
80 v
= PyLong_FromUnsignedLong(*(unsigned int*)addr
);
83 v
= PyInt_FromLong(*(long*)addr
);
86 v
= PyLong_FromUnsignedLong(*(unsigned long*)addr
);
89 v
= PyInt_FromSsize_t(*(Py_ssize_t
*)addr
);
92 v
= PyFloat_FromDouble((double)*(float*)addr
);
95 v
= PyFloat_FromDouble(*(double*)addr
);
98 if (*(char**)addr
== NULL
) {
103 v
= PyString_FromString(*(char**)addr
);
105 case T_STRING_INPLACE
:
106 v
= PyString_FromString((char*)addr
);
109 v
= PyString_FromStringAndSize((char*)addr
, 1);
112 v
= *(PyObject
**)addr
;
118 v
= *(PyObject
**)addr
;
120 PyErr_SetString(PyExc_AttributeError
, l
->name
);
123 #ifdef HAVE_LONG_LONG
125 v
= PyLong_FromLongLong(*(PY_LONG_LONG
*)addr
);
128 v
= PyLong_FromUnsignedLongLong(*(unsigned PY_LONG_LONG
*)addr
);
130 #endif /* HAVE_LONG_LONG */
132 PyErr_SetString(PyExc_SystemError
, "bad memberdescr type");
139 PyMember_Set(char *addr
, struct memberlist
*mlist
, const char *name
, PyObject
*v
)
141 struct memberlist
*l
;
143 for (l
= mlist
; l
->name
!= NULL
; l
++) {
144 if (strcmp(l
->name
, name
) == 0) {
148 copy
.offset
= l
->offset
;
149 copy
.flags
= l
->flags
;
151 return PyMember_SetOne(addr
, ©
, v
);
155 PyErr_SetString(PyExc_AttributeError
, name
);
161 if (PyErr_Warn(PyExc_RuntimeWarning, msg) < 0) \
166 PyMember_SetOne(char *addr
, PyMemberDef
*l
, PyObject
*v
)
170 if ((l
->flags
& READONLY
) || l
->type
== T_STRING
)
172 PyErr_SetString(PyExc_TypeError
, "readonly attribute");
175 if ((l
->flags
& WRITE_RESTRICTED
) && PyEval_GetRestricted()) {
176 PyErr_SetString(PyExc_RuntimeError
, "restricted attribute");
179 if (v
== NULL
&& l
->type
!= T_OBJECT_EX
&& l
->type
!= T_OBJECT
) {
180 PyErr_SetString(PyExc_TypeError
,
181 "can't delete numeric/char attribute");
187 long long_val
= PyInt_AsLong(v
);
188 if ((long_val
== -1) && PyErr_Occurred())
190 *(char*)addr
= (char)long_val
;
191 /* XXX: For compatibility, only warn about truncations
193 if ((long_val
> CHAR_MAX
) || (long_val
< CHAR_MIN
))
194 WARN("Truncation of value to char");
198 long long_val
= PyInt_AsLong(v
);
199 if ((long_val
== -1) && PyErr_Occurred())
201 *(unsigned char*)addr
= (unsigned char)long_val
;
202 if ((long_val
> UCHAR_MAX
) || (long_val
< 0))
203 WARN("Truncation of value to unsigned char");
207 long long_val
= PyInt_AsLong(v
);
208 if ((long_val
== -1) && PyErr_Occurred())
210 *(short*)addr
= (short)long_val
;
211 if ((long_val
> SHRT_MAX
) || (long_val
< SHRT_MIN
))
212 WARN("Truncation of value to short");
216 long long_val
= PyInt_AsLong(v
);
217 if ((long_val
== -1) && PyErr_Occurred())
219 *(unsigned short*)addr
= (unsigned short)long_val
;
220 if ((long_val
> USHRT_MAX
) || (long_val
< 0))
221 WARN("Truncation of value to unsigned short");
225 long long_val
= PyInt_AsLong(v
);
226 if ((long_val
== -1) && PyErr_Occurred())
228 *(int *)addr
= (int)long_val
;
229 if ((long_val
> INT_MAX
) || (long_val
< INT_MIN
))
230 WARN("Truncation of value to int");
234 unsigned long ulong_val
= PyLong_AsUnsignedLong(v
);
235 if ((ulong_val
== (unsigned int)-1) && PyErr_Occurred()) {
236 /* XXX: For compatibility, accept negative int values
239 ulong_val
= PyLong_AsLong(v
);
240 if ((ulong_val
== (unsigned int)-1) && PyErr_Occurred())
242 *(unsigned int *)addr
= (unsigned int)ulong_val
;
243 WARN("Writing negative value into unsigned field");
245 *(unsigned int *)addr
= (unsigned int)ulong_val
;
246 if (ulong_val
> UINT_MAX
)
247 WARN("Truncation of value to unsigned int");
251 *(long*)addr
= PyLong_AsLong(v
);
252 if ((*(long*)addr
== -1) && PyErr_Occurred())
257 *(unsigned long*)addr
= PyLong_AsUnsignedLong(v
);
258 if ((*(unsigned long*)addr
== (unsigned long)-1)
259 && PyErr_Occurred()) {
260 /* XXX: For compatibility, accept negative int values
263 *(unsigned long*)addr
= PyLong_AsLong(v
);
264 if ((*(unsigned long*)addr
== (unsigned int)-1)
267 WARN("Writing negative value into unsigned field");
272 *(Py_ssize_t
*)addr
= PyInt_AsSsize_t(v
);
273 if ((*(Py_ssize_t
*)addr
== (Py_ssize_t
)-1)
279 double double_val
= PyFloat_AsDouble(v
);
280 if ((double_val
== -1) && PyErr_Occurred())
282 *(float*)addr
= (float)double_val
;
286 *(double*)addr
= PyFloat_AsDouble(v
);
287 if ((*(double*)addr
== -1) && PyErr_Occurred())
293 oldv
= *(PyObject
**)addr
;
294 *(PyObject
**)addr
= v
;
298 if (PyString_Check(v
) && PyString_Size(v
) == 1) {
299 *(char*)addr
= PyString_AsString(v
)[0];
306 #ifdef HAVE_LONG_LONG
309 *(PY_LONG_LONG
*)addr
= value
= PyLong_AsLongLong(v
);
310 if ((value
== -1) && PyErr_Occurred())
315 unsigned PY_LONG_LONG value
;
316 /* ??? PyLong_AsLongLong accepts an int, but PyLong_AsUnsignedLongLong
319 *(unsigned PY_LONG_LONG
*)addr
= value
= PyLong_AsUnsignedLongLong(v
);
321 *(unsigned PY_LONG_LONG
*)addr
= value
= PyInt_AsLong(v
);
322 if ((value
== (unsigned PY_LONG_LONG
)-1) && PyErr_Occurred())
326 #endif /* HAVE_LONG_LONG */
328 PyErr_Format(PyExc_SystemError
,
329 "bad memberdescr type for %s", l
->name
);