Mercurial > cpython-lru_cache-weakref

annotate Python/errors.c @ 5340:db673e98f28d legacy-trunk

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Expand one level of symbolic link in sys.argv[0] before inserting its dirname in sys.path. This means that you can create a symbolic link foo in /usr/local/bin pointing to /usr/yourname/src/foo/foo.py, and then invoking foo will insert /usr/yourname/src/foo in sys.path, not /usr/local/bin. This makes it easier to have multifile programs (before, the program would have to do an os.readlink(sys.argv[0]) itself and insert the resulting directory in sys.path -- Grail does this). Note that the expansion is only used for sys.path; sys.argv[0] is still the original, unadorned filename (/usr/local/bin/foo in the example).
author Guido van Rossum <guido@python.org>
date Fri, 25 Apr 1997 15:38:31 +0000
parents 2c4b802a3b5d
children 1ea1f019268d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
145
853b736a6a9e Added copyright notice.
Guido van Rossum <guido@python.org>
parents: 90
diff changeset
1 /***********************************************************
2062
d0d0a69b5ca3 Added 1995 to copyright message.
Guido van Rossum <guido@python.org>
parents: 2052
diff changeset
2 Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
d0d0a69b5ca3 Added 1995 to copyright message.
Guido van Rossum <guido@python.org>
parents: 2052
diff changeset
3 The Netherlands.
145
853b736a6a9e Added copyright notice.
Guido van Rossum <guido@python.org>
parents: 90
diff changeset
4
853b736a6a9e Added copyright notice.
Guido van Rossum <guido@python.org>
parents: 90
diff changeset
5 All Rights Reserved
853b736a6a9e Added copyright notice.
Guido van Rossum <guido@python.org>
parents: 90
diff changeset
6
4503
65d2d8e67da3 New permission notice, includes CNRI.
Guido van Rossum <guido@python.org>
parents: 3100
diff changeset
7 Permission to use, copy, modify, and distribute this software and its
65d2d8e67da3 New permission notice, includes CNRI.
Guido van Rossum <guido@python.org>
parents: 3100
diff changeset
8 documentation for any purpose and without fee is hereby granted,
145
853b736a6a9e Added copyright notice.
Guido van Rossum <guido@python.org>
parents: 90
diff changeset
9 provided that the above copyright notice appear in all copies and that
4503
65d2d8e67da3 New permission notice, includes CNRI.
Guido van Rossum <guido@python.org>
parents: 3100
diff changeset
10 both that copyright notice and this permission notice appear in
145
853b736a6a9e Added copyright notice.
Guido van Rossum <guido@python.org>
parents: 90
diff changeset
11 supporting documentation, and that the names of Stichting Mathematisch
4503
65d2d8e67da3 New permission notice, includes CNRI.
Guido van Rossum <guido@python.org>
parents: 3100
diff changeset
12 Centrum or CWI or Corporation for National Research Initiatives or
65d2d8e67da3 New permission notice, includes CNRI.
Guido van Rossum <guido@python.org>
parents: 3100
diff changeset
13 CNRI not be used in advertising or publicity pertaining to
65d2d8e67da3 New permission notice, includes CNRI.
Guido van Rossum <guido@python.org>
parents: 3100
diff changeset
14 distribution of the software without specific, written prior
65d2d8e67da3 New permission notice, includes CNRI.
Guido van Rossum <guido@python.org>
parents: 3100
diff changeset
15 permission.
145
853b736a6a9e Added copyright notice.
Guido van Rossum <guido@python.org>
parents: 90
diff changeset
16
4503
65d2d8e67da3 New permission notice, includes CNRI.
Guido van Rossum <guido@python.org>
parents: 3100
diff changeset
17 While CWI is the initial source for this software, a modified version
65d2d8e67da3 New permission notice, includes CNRI.
Guido van Rossum <guido@python.org>
parents: 3100
diff changeset
18 is made available by the Corporation for National Research Initiatives
65d2d8e67da3 New permission notice, includes CNRI.
Guido van Rossum <guido@python.org>
parents: 3100
diff changeset
19 (CNRI) at the Internet address ftp://ftp.python.org.
65d2d8e67da3 New permission notice, includes CNRI.
Guido van Rossum <guido@python.org>
parents: 3100
diff changeset
20
65d2d8e67da3 New permission notice, includes CNRI.
Guido van Rossum <guido@python.org>
parents: 3100
diff changeset
21 STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
65d2d8e67da3 New permission notice, includes CNRI.
Guido van Rossum <guido@python.org>
parents: 3100
diff changeset
22 REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
65d2d8e67da3 New permission notice, includes CNRI.
Guido van Rossum <guido@python.org>
parents: 3100
diff changeset
23 MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH
65d2d8e67da3 New permission notice, includes CNRI.
Guido van Rossum <guido@python.org>
parents: 3100
diff changeset
24 CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
65d2d8e67da3 New permission notice, includes CNRI.
Guido van Rossum <guido@python.org>
parents: 3100
diff changeset
25 DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
65d2d8e67da3 New permission notice, includes CNRI.
Guido van Rossum <guido@python.org>
parents: 3100
diff changeset
26 PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
65d2d8e67da3 New permission notice, includes CNRI.
Guido van Rossum <guido@python.org>
parents: 3100
diff changeset
27 TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
65d2d8e67da3 New permission notice, includes CNRI.
Guido van Rossum <guido@python.org>
parents: 3100
diff changeset
28 PERFORMANCE OF THIS SOFTWARE.
145
853b736a6a9e Added copyright notice.
Guido van Rossum <guido@python.org>
parents: 90
diff changeset
29
853b736a6a9e Added copyright notice.
Guido van Rossum <guido@python.org>
parents: 90
diff changeset
30 ******************************************************************/
853b736a6a9e Added copyright notice.
Guido van Rossum <guido@python.org>
parents: 90
diff changeset
31
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
32 /* Error handling -- see also run.c */
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
33
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
34 /* New error handling interface.
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
35
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
36 The following problem exists (existed): methods of built-in modules
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
37 are called with 'self' and 'args' arguments, but without a context
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
38 argument, so they have no way to raise a specific exception.
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
39 The same is true for the object implementations: no context argument.
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
40 The old convention was to set 'errno' and to return NULL.
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
41 The caller (usually call_function() in eval.c) detects the NULL
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
42 return value and then calls puterrno(ctx) to turn the errno value
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
43 into a true exception. Problems with this approach are:
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
44 - it used standard errno values to indicate Python-specific errors,
86
a6934380c6e7 "Compiling" version
Guido van Rossum <guido@python.org>
parents: 66
diff changeset
45 but this means that when such an error code is reported by a system
a6934380c6e7 "Compiling" version
Guido van Rossum <guido@python.org>
parents: 66
diff changeset
46 call (e.g., in module posix), the user gets a confusing message
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
47 - errno is a global variable, which makes extensions to a multi-
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
48 threading environment difficult; e.g., in IRIX, multi-threaded
86
a6934380c6e7 "Compiling" version
Guido van Rossum <guido@python.org>
parents: 66
diff changeset
49 programs must use the function oserror() instead of looking in errno
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
50 - there is no portable way to add new error numbers for specic
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
51 situations -- the value space for errno is reserved to the OS, yet
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
52 the way to turn module-specific errors into a module-specific
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
53 exception requires module-specific values for errno
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
54 - there is no way to add a more situation-specific message to an
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
55 error.
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
56
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
57 The new interface solves all these problems. To return an error, a
86
a6934380c6e7 "Compiling" version
Guido van Rossum <guido@python.org>
parents: 66
diff changeset
58 built-in function calls err_set(exception), err_setval(exception,
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
59 value) or err_setstr(exception, string), and returns NULL. These
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
60 functions save the value for later use by puterrno(). To adapt this
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
61 scheme to a multi-threaded environment, only the implementation of
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
62 err_setval() has to be changed.
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
63 */
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
64
90
5cb843bc87fc Changed include of <errno.h>
Guido van Rossum <guido@python.org>
parents: 86
diff changeset
65 #include "allobjects.h"
1912
ada19aaaf8c0 * Python/errors.c (err_clear): clear interpreter stack trace
Guido van Rossum <guido@python.org>
parents: 1832
diff changeset
66 #include "traceback.h"
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
67
90
5cb843bc87fc Changed include of <errno.h>
Guido van Rossum <guido@python.org>
parents: 86
diff changeset
68 #include <errno.h>
86
a6934380c6e7 "Compiling" version
Guido van Rossum <guido@python.org>
parents: 66
diff changeset
69
2793
b8937e74fdf5 Porting to CW CFM68K
Jack Jansen <jack.jansen@cwi.nl>
parents: 2502
diff changeset
70 #ifdef SYMANTEC__CFM68K__
2376
c31eaed7798b rename macstrerror to PyMac_StrError; no EINTR test in CW
Guido van Rossum <guido@python.org>
parents: 2190
diff changeset
71 #pragma lib_export on
c31eaed7798b rename macstrerror to PyMac_StrError; no EINTR test in CW
Guido van Rossum <guido@python.org>
parents: 2190
diff changeset
72 #endif
c31eaed7798b rename macstrerror to PyMac_StrError; no EINTR test in CW
Guido van Rossum <guido@python.org>
parents: 2190
diff changeset
73
2019
9e3469c0ed75 Added hook for better mac error messages.
Jack Jansen <jack.jansen@cwi.nl>
parents: 2003
diff changeset
74 #ifdef macintosh
5312
d0eb183092b0 (Jack:) On the Mac, use standard strerror() if using MSL C-library.
Guido van Rossum <guido@python.org>
parents: 5112
diff changeset
75 #ifndef __MSL__
2376
c31eaed7798b rename macstrerror to PyMac_StrError; no EINTR test in CW
Guido van Rossum <guido@python.org>
parents: 2190
diff changeset
76 /* Replace strerror with a Mac specific routine.
c31eaed7798b rename macstrerror to PyMac_StrError; no EINTR test in CW
Guido van Rossum <guido@python.org>
parents: 2190
diff changeset
77 XXX PROBLEM: some positive errors have a meaning for MacOS,
c31eaed7798b rename macstrerror to PyMac_StrError; no EINTR test in CW
Guido van Rossum <guido@python.org>
parents: 2190
diff changeset
78 but some library routines set Unix error numbers...
2019
9e3469c0ed75 Added hook for better mac error messages.
Jack Jansen <jack.jansen@cwi.nl>
parents: 2003
diff changeset
79 */
2502
d5978238e3ba changes in NT tests
Guido van Rossum <guido@python.org>
parents: 2376
diff changeset
80 extern char *PyMac_StrError PROTO((int));
2190
b40e10bda231 Undef strerror on the mac before redefining it
Jack Jansen <jack.jansen@cwi.nl>
parents: 2062
diff changeset
81 #undef strerror
2376
c31eaed7798b rename macstrerror to PyMac_StrError; no EINTR test in CW
Guido van Rossum <guido@python.org>
parents: 2190
diff changeset
82 #define strerror PyMac_StrError
5312
d0eb183092b0 (Jack:) On the Mac, use standard strerror() if using MSL C-library.
Guido van Rossum <guido@python.org>
parents: 5112
diff changeset
83 #endif
2376
c31eaed7798b rename macstrerror to PyMac_StrError; no EINTR test in CW
Guido van Rossum <guido@python.org>
parents: 2190
diff changeset
84 #endif /* macintosh */
c31eaed7798b rename macstrerror to PyMac_StrError; no EINTR test in CW
Guido van Rossum <guido@python.org>
parents: 2190
diff changeset
85
2502
d5978238e3ba changes in NT tests
Guido van Rossum <guido@python.org>
parents: 2376
diff changeset
86 #ifndef __STDC__
5318
2c4b802a3b5d Keep Microsoft VC happy.
Guido van Rossum <guido@python.org>
parents: 5312
diff changeset
87 #ifndef MS_WINDOWS
59
433f52d1d958 Added prototype for strerror.
Guido van Rossum <guido@python.org>
parents: 37
diff changeset
88 extern char *strerror PROTO((int));
2502
d5978238e3ba changes in NT tests
Guido van Rossum <guido@python.org>
parents: 2376
diff changeset
89 #endif
5318
2c4b802a3b5d Keep Microsoft VC happy.
Guido van Rossum <guido@python.org>
parents: 5312
diff changeset
90 #endif
59
433f52d1d958 Added prototype for strerror.
Guido van Rossum <guido@python.org>
parents: 37
diff changeset
91
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
92 /* Last exception stored by err_setval() */
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
93
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
94 static object *last_exception;
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
95 static object *last_exc_val;
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
96
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
97 void
2052
d7e91437f0a2 Lots of changes, most minor (fatal() instead of abort(), use of
Guido van Rossum <guido@python.org>
parents: 2019
diff changeset
98 err_restore(exception, value, traceback)
d7e91437f0a2 Lots of changes, most minor (fatal() instead of abort(), use of
Guido van Rossum <guido@python.org>
parents: 2019
diff changeset
99 object *exception;
d7e91437f0a2 Lots of changes, most minor (fatal() instead of abort(), use of
Guido van Rossum <guido@python.org>
parents: 2019
diff changeset
100 object *value;
d7e91437f0a2 Lots of changes, most minor (fatal() instead of abort(), use of
Guido van Rossum <guido@python.org>
parents: 2019
diff changeset
101 object *traceback;
d7e91437f0a2 Lots of changes, most minor (fatal() instead of abort(), use of
Guido van Rossum <guido@python.org>
parents: 2019
diff changeset
102 {
d7e91437f0a2 Lots of changes, most minor (fatal() instead of abort(), use of
Guido van Rossum <guido@python.org>
parents: 2019
diff changeset
103 err_clear();
d7e91437f0a2 Lots of changes, most minor (fatal() instead of abort(), use of
Guido van Rossum <guido@python.org>
parents: 2019
diff changeset
104
d7e91437f0a2 Lots of changes, most minor (fatal() instead of abort(), use of
Guido van Rossum <guido@python.org>
parents: 2019
diff changeset
105 last_exception = exception;
d7e91437f0a2 Lots of changes, most minor (fatal() instead of abort(), use of
Guido van Rossum <guido@python.org>
parents: 2019
diff changeset
106 last_exc_val = value;
d7e91437f0a2 Lots of changes, most minor (fatal() instead of abort(), use of
Guido van Rossum <guido@python.org>
parents: 2019
diff changeset
107 (void) tb_store(traceback);
d7e91437f0a2 Lots of changes, most minor (fatal() instead of abort(), use of
Guido van Rossum <guido@python.org>
parents: 2019
diff changeset
108 XDECREF(traceback);
d7e91437f0a2 Lots of changes, most minor (fatal() instead of abort(), use of
Guido van Rossum <guido@python.org>
parents: 2019
diff changeset
109 }
d7e91437f0a2 Lots of changes, most minor (fatal() instead of abort(), use of
Guido van Rossum <guido@python.org>
parents: 2019
diff changeset
110
d7e91437f0a2 Lots of changes, most minor (fatal() instead of abort(), use of
Guido van Rossum <guido@python.org>
parents: 2019
diff changeset
111 void
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
112 err_setval(exception, value)
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
113 object *exception;
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
114 object *value;
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
115 {
86
a6934380c6e7 "Compiling" version
Guido van Rossum <guido@python.org>
parents: 66
diff changeset
116 XINCREF(exception);
a6934380c6e7 "Compiling" version
Guido van Rossum <guido@python.org>
parents: 66
diff changeset
117 XINCREF(value);
2052
d7e91437f0a2 Lots of changes, most minor (fatal() instead of abort(), use of
Guido van Rossum <guido@python.org>
parents: 2019
diff changeset
118 err_restore(exception, value, (object *)NULL);
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
119 }
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
120
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
121 void
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
122 err_set(exception)
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
123 object *exception;
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
124 {
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
125 err_setval(exception, (object *)NULL);
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
126 }
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
127
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
128 void
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
129 err_setstr(exception, string)
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
130 object *exception;
4654
df81856db58c Add const to error and newstring functions
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
131 const char *string;
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
132 {
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
133 object *value = newstringobject(string);
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
134 err_setval(exception, value);
86
a6934380c6e7 "Compiling" version
Guido van Rossum <guido@python.org>
parents: 66
diff changeset
135 XDECREF(value);
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
136 }
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
137
1832
79e420805c67 err_clear: clear interpreter stack trace
Guido van Rossum <guido@python.org>
parents: 1319
diff changeset
138
79e420805c67 err_clear: clear interpreter stack trace
Guido van Rossum <guido@python.org>
parents: 1319
diff changeset
139 object *
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
140 err_occurred()
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
141 {
1832
79e420805c67 err_clear: clear interpreter stack trace
Guido van Rossum <guido@python.org>
parents: 1319
diff changeset
142 return last_exception;
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
143 }
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
144
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
145 void
2052
d7e91437f0a2 Lots of changes, most minor (fatal() instead of abort(), use of
Guido van Rossum <guido@python.org>
parents: 2019
diff changeset
146 err_fetch(p_exc, p_val, p_tb)
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
147 object **p_exc;
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
148 object **p_val;
2052
d7e91437f0a2 Lots of changes, most minor (fatal() instead of abort(), use of
Guido van Rossum <guido@python.org>
parents: 2019
diff changeset
149 object **p_tb;
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
150 {
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
151 *p_exc = last_exception;
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
152 last_exception = NULL;
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
153 *p_val = last_exc_val;
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
154 last_exc_val = NULL;
2052
d7e91437f0a2 Lots of changes, most minor (fatal() instead of abort(), use of
Guido van Rossum <guido@python.org>
parents: 2019
diff changeset
155 *p_tb = tb_fetch();
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
156 }
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
157
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
158 void
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
159 err_clear()
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
160 {
1912
ada19aaaf8c0 * Python/errors.c (err_clear): clear interpreter stack trace
Guido van Rossum <guido@python.org>
parents: 1832
diff changeset
161 object *tb;
86
a6934380c6e7 "Compiling" version
Guido van Rossum <guido@python.org>
parents: 66
diff changeset
162 XDECREF(last_exception);
a6934380c6e7 "Compiling" version
Guido van Rossum <guido@python.org>
parents: 66
diff changeset
163 last_exception = NULL;
a6934380c6e7 "Compiling" version
Guido van Rossum <guido@python.org>
parents: 66
diff changeset
164 XDECREF(last_exc_val);
a6934380c6e7 "Compiling" version
Guido van Rossum <guido@python.org>
parents: 66
diff changeset
165 last_exc_val = NULL;
1912
ada19aaaf8c0 * Python/errors.c (err_clear): clear interpreter stack trace
Guido van Rossum <guido@python.org>
parents: 1832
diff changeset
166 /* Also clear interpreter stack trace */
ada19aaaf8c0 * Python/errors.c (err_clear): clear interpreter stack trace
Guido van Rossum <guido@python.org>
parents: 1832
diff changeset
167 tb = tb_fetch();
ada19aaaf8c0 * Python/errors.c (err_clear): clear interpreter stack trace
Guido van Rossum <guido@python.org>
parents: 1832
diff changeset
168 XDECREF(tb);
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
169 }
9
33701db4ea55 Adde dconvenience functions.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
170
33701db4ea55 Adde dconvenience functions.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
171 /* Convenience functions to set a type error exception and return 0 */
33701db4ea55 Adde dconvenience functions.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
172
33701db4ea55 Adde dconvenience functions.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
173 int
33701db4ea55 Adde dconvenience functions.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
174 err_badarg()
33701db4ea55 Adde dconvenience functions.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
175 {
66
46cb14aec10a Reformulated err_badarg error message.
Guido van Rossum <guido@python.org>
parents: 59
diff changeset
176 err_setstr(TypeError, "illegal argument type for built-in operation");
9
33701db4ea55 Adde dconvenience functions.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
177 return 0;
33701db4ea55 Adde dconvenience functions.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
178 }
33701db4ea55 Adde dconvenience functions.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
179
33701db4ea55 Adde dconvenience functions.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
180 object *
33701db4ea55 Adde dconvenience functions.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
181 err_nomem()
33701db4ea55 Adde dconvenience functions.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
182 {
86
a6934380c6e7 "Compiling" version
Guido van Rossum <guido@python.org>
parents: 66
diff changeset
183 err_set(MemoryError);
9
33701db4ea55 Adde dconvenience functions.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
184 return NULL;
33701db4ea55 Adde dconvenience functions.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
185 }
33701db4ea55 Adde dconvenience functions.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
186
33701db4ea55 Adde dconvenience functions.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
187 object *
33701db4ea55 Adde dconvenience functions.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
188 err_errno(exc)
33701db4ea55 Adde dconvenience functions.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
189 object *exc;
33701db4ea55 Adde dconvenience functions.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
190 {
390
172aa2c3e734 Check for EINTR and turn it into KeyboardInterrupt
Guido van Rossum <guido@python.org>
parents: 145
diff changeset
191 object *v;
1832
79e420805c67 err_clear: clear interpreter stack trace
Guido van Rossum <guido@python.org>
parents: 1319
diff changeset
192 int i = errno;
2376
c31eaed7798b rename macstrerror to PyMac_StrError; no EINTR test in CW
Guido van Rossum <guido@python.org>
parents: 2190
diff changeset
193 #ifdef EINTR
1832
79e420805c67 err_clear: clear interpreter stack trace
Guido van Rossum <guido@python.org>
parents: 1319
diff changeset
194 if (i == EINTR && sigcheck())
390
172aa2c3e734 Check for EINTR and turn it into KeyboardInterrupt
Guido van Rossum <guido@python.org>
parents: 145
diff changeset
195 return NULL;
2376
c31eaed7798b rename macstrerror to PyMac_StrError; no EINTR test in CW
Guido van Rossum <guido@python.org>
parents: 2190
diff changeset
196 #endif
1832
79e420805c67 err_clear: clear interpreter stack trace
Guido van Rossum <guido@python.org>
parents: 1319
diff changeset
197 v = mkvalue("(is)", i, strerror(i));
9
33701db4ea55 Adde dconvenience functions.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
198 if (v != NULL) {
1252
c4cd0d9d8281 * Changed many files to use mkvalue() instead of newtupleobject().
Guido van Rossum <guido@python.org>
parents: 795
diff changeset
199 err_setval(exc, v);
c4cd0d9d8281 * Changed many files to use mkvalue() instead of newtupleobject().
Guido van Rossum <guido@python.org>
parents: 795
diff changeset
200 DECREF(v);
9
33701db4ea55 Adde dconvenience functions.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
201 }
33701db4ea55 Adde dconvenience functions.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
202 return NULL;
33701db4ea55 Adde dconvenience functions.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
203 }
22
2d3eb717a00d Added err_badcall().
Guido van Rossum <guido@python.org>
parents: 9
diff changeset
204
2d3eb717a00d Added err_badcall().
Guido van Rossum <guido@python.org>
parents: 9
diff changeset
205 void
2d3eb717a00d Added err_badcall().
Guido van Rossum <guido@python.org>
parents: 9
diff changeset
206 err_badcall()
2d3eb717a00d Added err_badcall().
Guido van Rossum <guido@python.org>
parents: 9
diff changeset
207 {
2d3eb717a00d Added err_badcall().
Guido van Rossum <guido@python.org>
parents: 9
diff changeset
208 err_setstr(SystemError, "bad argument to internal function");
2d3eb717a00d Added err_badcall().
Guido van Rossum <guido@python.org>
parents: 9
diff changeset
209 }
5105
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
parents: 4654
diff changeset
210
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
parents: 4654
diff changeset
211
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
parents: 4654
diff changeset
212 #ifdef HAVE_STDARG_PROTOTYPES
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
parents: 4654
diff changeset
213 PyObject *
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
parents: 4654
diff changeset
214 PyErr_Format(PyObject *exception, const char *format, ...)
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
parents: 4654
diff changeset
215 #else
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
parents: 4654
diff changeset
216 PyObject *
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
parents: 4654
diff changeset
217 PyErr_Format(exception, format, va_alist)
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
parents: 4654
diff changeset
218 PyObject *exception;
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
parents: 4654
diff changeset
219 const char *format;
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
parents: 4654
diff changeset
220 va_dcl
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
parents: 4654
diff changeset
221 #endif
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
parents: 4654
diff changeset
222 {
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
parents: 4654
diff changeset
223 va_list vargs;
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
parents: 4654
diff changeset
224 char buffer[500]; /* Caller is responsible for limiting the format */
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
parents: 4654
diff changeset
225
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
parents: 4654
diff changeset
226 #ifdef HAVE_STDARG_PROTOTYPES
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
parents: 4654
diff changeset
227 va_start(vargs, format);
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
parents: 4654
diff changeset
228 #else
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
parents: 4654
diff changeset
229 va_start(vargs);
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
parents: 4654
diff changeset
230 #endif
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
parents: 4654
diff changeset
231
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
parents: 4654
diff changeset
232 vsprintf(buffer, format, vargs);
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
parents: 4654
diff changeset
233 PyErr_SetString(exception, buffer);
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
parents: 4654
diff changeset
234 return NULL;
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
parents: 4654
diff changeset
235 }