Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 1 | /*********************************************************** |
Guido van Rossum | 6d023c9 | 1995-01-04 19:12:13 +0000 | [diff] [blame] | 2 | Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam, |
| 3 | The Netherlands. |
Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 4 | |
| 5 | All Rights Reserved |
| 6 | |
Guido van Rossum | d266eb4 | 1996-10-25 14:44:06 +0000 | [diff] [blame] | 7 | Permission to use, copy, modify, and distribute this software and its |
| 8 | documentation for any purpose and without fee is hereby granted, |
Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 9 | provided that the above copyright notice appear in all copies and that |
Guido van Rossum | d266eb4 | 1996-10-25 14:44:06 +0000 | [diff] [blame] | 10 | both that copyright notice and this permission notice appear in |
Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 11 | supporting documentation, and that the names of Stichting Mathematisch |
Guido van Rossum | d266eb4 | 1996-10-25 14:44:06 +0000 | [diff] [blame] | 12 | Centrum or CWI or Corporation for National Research Initiatives or |
| 13 | CNRI not be used in advertising or publicity pertaining to |
| 14 | distribution of the software without specific, written prior |
| 15 | permission. |
Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 16 | |
Guido van Rossum | d266eb4 | 1996-10-25 14:44:06 +0000 | [diff] [blame] | 17 | While CWI is the initial source for this software, a modified version |
| 18 | is made available by the Corporation for National Research Initiatives |
| 19 | (CNRI) at the Internet address ftp://ftp.python.org. |
| 20 | |
| 21 | STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH |
| 22 | REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF |
| 23 | MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH |
| 24 | CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL |
| 25 | DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| 26 | PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| 27 | TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| 28 | PERFORMANCE OF THIS SOFTWARE. |
Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 29 | |
| 30 | ******************************************************************/ |
| 31 | |
Guido van Rossum | 373c869 | 1997-04-29 18:22:47 +0000 | [diff] [blame] | 32 | /* Error handling */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 33 | |
Guido van Rossum | 373c869 | 1997-04-29 18:22:47 +0000 | [diff] [blame] | 34 | #include "Python.h" |
Guido van Rossum | f22120a | 1990-12-20 23:05:40 +0000 | [diff] [blame] | 35 | |
Jack Jansen | eceb3e3 | 1995-06-27 13:15:15 +0000 | [diff] [blame] | 36 | #ifdef SYMANTEC__CFM68K__ |
Guido van Rossum | e9fbc09 | 1995-02-18 14:52:19 +0000 | [diff] [blame] | 37 | #pragma lib_export on |
| 38 | #endif |
| 39 | |
Jack Jansen | 8fd2d94 | 1994-12-14 12:54:54 +0000 | [diff] [blame] | 40 | #ifdef macintosh |
Guido van Rossum | 6976a52 | 1997-04-11 19:18:23 +0000 | [diff] [blame] | 41 | #ifndef __MSL__ |
Guido van Rossum | e9fbc09 | 1995-02-18 14:52:19 +0000 | [diff] [blame] | 42 | /* Replace strerror with a Mac specific routine. |
| 43 | XXX PROBLEM: some positive errors have a meaning for MacOS, |
| 44 | but some library routines set Unix error numbers... |
Jack Jansen | 8fd2d94 | 1994-12-14 12:54:54 +0000 | [diff] [blame] | 45 | */ |
Guido van Rossum | 373c869 | 1997-04-29 18:22:47 +0000 | [diff] [blame] | 46 | extern char *PyMac_StrError Py_PROTO((int)); |
Jack Jansen | 5ef86d5 | 1995-01-19 12:16:44 +0000 | [diff] [blame] | 47 | #undef strerror |
Guido van Rossum | e9fbc09 | 1995-02-18 14:52:19 +0000 | [diff] [blame] | 48 | #define strerror PyMac_StrError |
Guido van Rossum | 6976a52 | 1997-04-11 19:18:23 +0000 | [diff] [blame] | 49 | #endif |
Guido van Rossum | e9fbc09 | 1995-02-18 14:52:19 +0000 | [diff] [blame] | 50 | #endif /* macintosh */ |
| 51 | |
Guido van Rossum | 53e8d44 | 1995-03-09 12:11:31 +0000 | [diff] [blame] | 52 | #ifndef __STDC__ |
Guido van Rossum | 7844e38 | 1997-04-11 20:44:04 +0000 | [diff] [blame] | 53 | #ifndef MS_WINDOWS |
Guido van Rossum | 373c869 | 1997-04-29 18:22:47 +0000 | [diff] [blame] | 54 | extern char *strerror Py_PROTO((int)); |
Guido van Rossum | 53e8d44 | 1995-03-09 12:11:31 +0000 | [diff] [blame] | 55 | #endif |
Guido van Rossum | 7844e38 | 1997-04-11 20:44:04 +0000 | [diff] [blame] | 56 | #endif |
Guido van Rossum | f5401bd | 1990-11-02 17:50:28 +0000 | [diff] [blame] | 57 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 58 | void |
Guido van Rossum | a027efa | 1997-05-05 20:56:21 +0000 | [diff] [blame^] | 59 | PyErr_Restore(type, value, traceback) |
| 60 | PyObject *type; |
Guido van Rossum | 373c869 | 1997-04-29 18:22:47 +0000 | [diff] [blame] | 61 | PyObject *value; |
| 62 | PyObject *traceback; |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 63 | { |
Guido van Rossum | a027efa | 1997-05-05 20:56:21 +0000 | [diff] [blame^] | 64 | PyThreadState *tstate = PyThreadState_Get(); |
| 65 | PyObject *oldtype, *oldvalue, *oldtraceback; |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 66 | |
Guido van Rossum | a027efa | 1997-05-05 20:56:21 +0000 | [diff] [blame^] | 67 | if (traceback != NULL && !PyTraceBack_Check(traceback)) { |
| 68 | /* XXX Should never happen -- fatal error instead? */ |
| 69 | Py_DECREF(traceback); |
| 70 | traceback = NULL; |
| 71 | } |
| 72 | |
| 73 | /* Save these in locals to safeguard against recursive |
| 74 | invocation through Py_XDECREF */ |
| 75 | oldtype = tstate->curexc_type; |
| 76 | oldvalue = tstate->curexc_value; |
| 77 | oldtraceback = tstate->curexc_traceback; |
| 78 | |
| 79 | tstate->curexc_type = type; |
| 80 | tstate->curexc_value = value; |
| 81 | tstate->curexc_traceback = traceback; |
| 82 | |
| 83 | Py_XDECREF(oldtype); |
| 84 | Py_XDECREF(oldvalue); |
| 85 | Py_XDECREF(oldtraceback); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 86 | } |
| 87 | |
| 88 | void |
Guido van Rossum | 373c869 | 1997-04-29 18:22:47 +0000 | [diff] [blame] | 89 | PyErr_SetObject(exception, value) |
| 90 | PyObject *exception; |
| 91 | PyObject *value; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 92 | { |
Guido van Rossum | 373c869 | 1997-04-29 18:22:47 +0000 | [diff] [blame] | 93 | Py_XINCREF(exception); |
| 94 | Py_XINCREF(value); |
| 95 | PyErr_Restore(exception, value, (PyObject *)NULL); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 96 | } |
| 97 | |
| 98 | void |
Guido van Rossum | 373c869 | 1997-04-29 18:22:47 +0000 | [diff] [blame] | 99 | PyErr_SetNone(exception) |
| 100 | PyObject *exception; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 101 | { |
Guido van Rossum | 373c869 | 1997-04-29 18:22:47 +0000 | [diff] [blame] | 102 | PyErr_SetObject(exception, (PyObject *)NULL); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 103 | } |
| 104 | |
| 105 | void |
Guido van Rossum | 373c869 | 1997-04-29 18:22:47 +0000 | [diff] [blame] | 106 | PyErr_SetString(exception, string) |
| 107 | PyObject *exception; |
Guido van Rossum | 067998f | 1996-12-10 15:33:34 +0000 | [diff] [blame] | 108 | const char *string; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 109 | { |
Guido van Rossum | 373c869 | 1997-04-29 18:22:47 +0000 | [diff] [blame] | 110 | PyObject *value = PyString_FromString(string); |
| 111 | PyErr_SetObject(exception, value); |
| 112 | Py_XDECREF(value); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 113 | } |
| 114 | |
Guido van Rossum | 3a24181 | 1994-08-29 12:14:12 +0000 | [diff] [blame] | 115 | |
Guido van Rossum | 373c869 | 1997-04-29 18:22:47 +0000 | [diff] [blame] | 116 | PyObject * |
| 117 | PyErr_Occurred() |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 118 | { |
Guido van Rossum | a027efa | 1997-05-05 20:56:21 +0000 | [diff] [blame^] | 119 | PyThreadState *tstate = PyThreadState_Get(); |
| 120 | |
| 121 | return tstate->curexc_type; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 122 | } |
| 123 | |
| 124 | void |
Guido van Rossum | a027efa | 1997-05-05 20:56:21 +0000 | [diff] [blame^] | 125 | PyErr_Fetch(p_type, p_value, p_traceback) |
| 126 | PyObject **p_type; |
| 127 | PyObject **p_value; |
| 128 | PyObject **p_traceback; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 129 | { |
Guido van Rossum | a027efa | 1997-05-05 20:56:21 +0000 | [diff] [blame^] | 130 | PyThreadState *tstate = PyThreadState_Get(); |
| 131 | |
| 132 | *p_type = tstate->curexc_type; |
| 133 | *p_value = tstate->curexc_value; |
| 134 | *p_traceback = tstate->curexc_traceback; |
| 135 | |
| 136 | tstate->curexc_type = NULL; |
| 137 | tstate->curexc_value = NULL; |
| 138 | tstate->curexc_traceback = NULL; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 139 | } |
| 140 | |
| 141 | void |
Guido van Rossum | 373c869 | 1997-04-29 18:22:47 +0000 | [diff] [blame] | 142 | PyErr_Clear() |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 143 | { |
Guido van Rossum | a027efa | 1997-05-05 20:56:21 +0000 | [diff] [blame^] | 144 | PyErr_Restore(NULL, NULL, NULL); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 145 | } |
Guido van Rossum | 7d310eb | 1990-10-14 20:00:05 +0000 | [diff] [blame] | 146 | |
| 147 | /* Convenience functions to set a type error exception and return 0 */ |
| 148 | |
| 149 | int |
Guido van Rossum | 373c869 | 1997-04-29 18:22:47 +0000 | [diff] [blame] | 150 | PyErr_BadArgument() |
Guido van Rossum | 7d310eb | 1990-10-14 20:00:05 +0000 | [diff] [blame] | 151 | { |
Guido van Rossum | a027efa | 1997-05-05 20:56:21 +0000 | [diff] [blame^] | 152 | PyErr_SetString(PyExc_TypeError, |
| 153 | "illegal argument type for built-in operation"); |
Guido van Rossum | 7d310eb | 1990-10-14 20:00:05 +0000 | [diff] [blame] | 154 | return 0; |
| 155 | } |
| 156 | |
Guido van Rossum | 373c869 | 1997-04-29 18:22:47 +0000 | [diff] [blame] | 157 | PyObject * |
| 158 | PyErr_NoMemory() |
Guido van Rossum | 7d310eb | 1990-10-14 20:00:05 +0000 | [diff] [blame] | 159 | { |
Guido van Rossum | 373c869 | 1997-04-29 18:22:47 +0000 | [diff] [blame] | 160 | PyErr_SetNone(PyExc_MemoryError); |
Guido van Rossum | 7d310eb | 1990-10-14 20:00:05 +0000 | [diff] [blame] | 161 | return NULL; |
| 162 | } |
| 163 | |
Guido van Rossum | 373c869 | 1997-04-29 18:22:47 +0000 | [diff] [blame] | 164 | PyObject * |
| 165 | PyErr_SetFromErrno(exc) |
| 166 | PyObject *exc; |
Guido van Rossum | 7d310eb | 1990-10-14 20:00:05 +0000 | [diff] [blame] | 167 | { |
Guido van Rossum | 373c869 | 1997-04-29 18:22:47 +0000 | [diff] [blame] | 168 | PyObject *v; |
Guido van Rossum | 3a24181 | 1994-08-29 12:14:12 +0000 | [diff] [blame] | 169 | int i = errno; |
Guido van Rossum | e9fbc09 | 1995-02-18 14:52:19 +0000 | [diff] [blame] | 170 | #ifdef EINTR |
Guido van Rossum | 373c869 | 1997-04-29 18:22:47 +0000 | [diff] [blame] | 171 | if (i == EINTR && PyErr_CheckSignals()) |
Guido van Rossum | 5063bab | 1991-10-20 20:14:56 +0000 | [diff] [blame] | 172 | return NULL; |
Guido van Rossum | e9fbc09 | 1995-02-18 14:52:19 +0000 | [diff] [blame] | 173 | #endif |
Guido van Rossum | 373c869 | 1997-04-29 18:22:47 +0000 | [diff] [blame] | 174 | v = Py_BuildValue("(is)", i, strerror(i)); |
Guido van Rossum | 7d310eb | 1990-10-14 20:00:05 +0000 | [diff] [blame] | 175 | if (v != NULL) { |
Guido van Rossum | 373c869 | 1997-04-29 18:22:47 +0000 | [diff] [blame] | 176 | PyErr_SetObject(exc, v); |
| 177 | Py_DECREF(v); |
Guido van Rossum | 7d310eb | 1990-10-14 20:00:05 +0000 | [diff] [blame] | 178 | } |
Guido van Rossum | 7d310eb | 1990-10-14 20:00:05 +0000 | [diff] [blame] | 179 | return NULL; |
| 180 | } |
Guido van Rossum | 683a072 | 1990-10-21 22:09:12 +0000 | [diff] [blame] | 181 | |
| 182 | void |
Guido van Rossum | 373c869 | 1997-04-29 18:22:47 +0000 | [diff] [blame] | 183 | PyErr_BadInternalCall() |
Guido van Rossum | 683a072 | 1990-10-21 22:09:12 +0000 | [diff] [blame] | 184 | { |
Guido van Rossum | a027efa | 1997-05-05 20:56:21 +0000 | [diff] [blame^] | 185 | PyErr_SetString(PyExc_SystemError, |
| 186 | "bad argument to internal function"); |
Guido van Rossum | 683a072 | 1990-10-21 22:09:12 +0000 | [diff] [blame] | 187 | } |
Guido van Rossum | 1548bac | 1997-02-14 17:09:47 +0000 | [diff] [blame] | 188 | |
| 189 | |
| 190 | #ifdef HAVE_STDARG_PROTOTYPES |
| 191 | PyObject * |
| 192 | PyErr_Format(PyObject *exception, const char *format, ...) |
| 193 | #else |
| 194 | PyObject * |
| 195 | PyErr_Format(exception, format, va_alist) |
| 196 | PyObject *exception; |
| 197 | const char *format; |
| 198 | va_dcl |
| 199 | #endif |
| 200 | { |
| 201 | va_list vargs; |
| 202 | char buffer[500]; /* Caller is responsible for limiting the format */ |
Guido van Rossum | 1548bac | 1997-02-14 17:09:47 +0000 | [diff] [blame] | 203 | |
| 204 | #ifdef HAVE_STDARG_PROTOTYPES |
| 205 | va_start(vargs, format); |
| 206 | #else |
| 207 | va_start(vargs); |
| 208 | #endif |
| 209 | |
| 210 | vsprintf(buffer, format, vargs); |
| 211 | PyErr_SetString(exception, buffer); |
| 212 | return NULL; |
| 213 | } |