FazBrowse GitHub Viewer
|
Trending
|
URL:
|
Home
Tools:
[Download Repo ZIP]
[View Raw Code]
[Original HTTPS Page]
cpython/Python/structmember.c at doc-link-https · 180909/cpython · GitHub
180909
/
cpython
Public
forked from
python/cpython
Notifications
You must be signed in to change notification settings
Fork
0
Star
0
Code
Pull requests
5
Actions
Projects
Security and quality
0
Insights
Additional navigation options
Code
Pull requests
Actions
Projects
Security and quality
Insights
Expand file tree
Breadcrumbs
cpython
/
Python
/
structmember.c
Copy path
More file actions
More file actions
Latest commit
History
History
History
296 lines (287 loc) · 8.83 KB
Breadcrumbs
cpython
/
Python
/
structmember.c
Copy path
File metadata and controls
296 lines (287 loc) · 8.83 KB
Raw
Copy raw file
Download raw file
Open symbols panel
Edit and raw actions
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
/* Map C struct members to Python object attributes */
#include
"Python.h"
#include
"structmember.h"
// PyMemberDef
PyObject
*
PyMember_GetOne
(
const
char
*
obj_addr
,
PyMemberDef
*
l
)
{
PyObject
*
v
;
const
char
*
addr
=
obj_addr
+
l
->
offset
;
switch
(
l
->
type
) {
case
T_BOOL
:
v
=
PyBool_FromLong
(
*
(
char
*
)
addr
);
break
;
case
T_BYTE
:
v
=
PyLong_FromLong
(
*
(
char
*
)
addr
);
break
;
case
T_UBYTE
:
v
=
PyLong_FromUnsignedLong
(
*
(
unsigned
char
*
)
addr
);
break
;
case
T_SHORT
:
v
=
PyLong_FromLong
(
*
(
short
*
)
addr
);
break
;
case
T_USHORT
:
v
=
PyLong_FromUnsignedLong
(
*
(
unsigned short
*
)
addr
);
break
;
case
T_INT
:
v
=
PyLong_FromLong
(
*
(
int
*
)
addr
);
break
;
case
T_UINT
:
v
=
PyLong_FromUnsignedLong
(
*
(
unsigned
int
*
)
addr
);
break
;
case
T_LONG
:
v
=
PyLong_FromLong
(
*
(
long
*
)
addr
);
break
;
case
T_ULONG
:
v
=
PyLong_FromUnsignedLong
(
*
(
unsigned long
*
)
addr
);
break
;
case
T_PYSSIZET
:
v
=
PyLong_FromSsize_t
(
*
(
Py_ssize_t
*
)
addr
);
break
;
case
T_FLOAT
:
v
=
PyFloat_FromDouble
((
double
)
*
(
float
*
)
addr
);
break
;
case
T_DOUBLE
:
v
=
PyFloat_FromDouble
(
*
(
double
*
)
addr
);
break
;
case
T_STRING
:
if
(
*
(
char
*
*
)
addr
==
NULL
) {
Py_INCREF
(
Py_None
);
v
=
Py_None
;
}
else
v
=
PyUnicode_FromString
(
*
(
char
*
*
)
addr
);
break
;
case
T_STRING_INPLACE
:
v
=
PyUnicode_FromString
((
char
*
)
addr
);
break
;
case
T_CHAR
:
v
=
PyUnicode_FromStringAndSize
((
char
*
)
addr
,
1
);
break
;
case
T_OBJECT
:
v
=
*
(
PyObject
*
*
)
addr
;
if
(
v
==
NULL
)
v
=
Py_None
;
Py_INCREF
(
v
);
break
;
case
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
T_LONGLONG
:
v
=
PyLong_FromLongLong
(
*
(
long long
*
)
addr
);
break
;
case
T_ULONGLONG
:
v
=
PyLong_FromUnsignedLongLong
(
*
(
unsigned long long
*
)
addr
);
break
;
case
T_NONE
:
v
=
Py_None
;
Py_INCREF
(
v
);
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
;
addr
+=
l
->
offset
;
if
((
l
->
flags
&
READONLY
))
{
PyErr_SetString
(
PyExc_AttributeError
,
"readonly attribute"
);
return
-1
;
}
if
(
v
==
NULL
) {
if
(
l
->
type
==
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
!=
T_OBJECT
) {
PyErr_SetString
(
PyExc_TypeError
,
"can't delete numeric/char attribute"
);
return
-1
;
}
}
switch
(
l
->
type
) {
case
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
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
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
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
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
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
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
T_LONG
:{
*
(
long
*
)
addr
=
PyLong_AsLong
(
v
);
if
((
*
(
long
*
)
addr
==
-1
)
&&
PyErr_Occurred
())
return
-1
;
break
;
}
case
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
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
T_FLOAT
:{
double
double_val
=
PyFloat_AsDouble
(
v
);
if
((
double_val
==
-1
)
&&
PyErr_Occurred
())
return
-1
;
*
(
float
*
)
addr
=
(
float
)
double_val
;
break
;
}
case
T_DOUBLE
:
*
(
double
*
)
addr
=
PyFloat_AsDouble
(
v
);
if
((
*
(
double
*
)
addr
==
-1
)
&&
PyErr_Occurred
())
return
-1
;
break
;
case
T_OBJECT
:
case
T_OBJECT_EX
:
Py_XINCREF
(
v
);
oldv
=
*
(
PyObject
*
*
)
addr
;
*
(
PyObject
*
*
)
addr
=
v
;
Py_XDECREF
(
oldv
);
break
;
case
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
T_STRING
:
case
T_STRING_INPLACE
:
PyErr_SetString
(
PyExc_TypeError
,
"readonly attribute"
);
return
-1
;
case
T_LONGLONG
:{
long long
value
;
*
(
long long
*
)
addr
=
value
=
PyLong_AsLongLong
(
v
);
if
((
value
==
-1
)
&&
PyErr_Occurred
())
return
-1
;
break
;
}
case
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
;
}
Back
|
FazBrowse Home
|
New Git URL