Mercurial > cpython-lru_cache-weakref

annotate Python/errors.c @ 10279:886ea255f381 legacy-trunk

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Patch by Tim Peters to improve the range checks for range() and xrange(), especially for platforms where int and long are different sizes (so sys.maxint isn't actually the theoretical limit for the length of a list, but the largest C int is -- sys.maxint is the largest Python int, which is actually a C long).
author Guido van Rossum <guido@python.org>
date Tue, 23 Feb 1999 16:11:01 +0000
parents 1d40bc25703a
children df8a1c281ad7
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1 /***********************************************************
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2 Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
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3 The Netherlands.
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4
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5 All Rights Reserved
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6
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7 Permission to use, copy, modify, and distribute this software and its
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8 documentation for any purpose and without fee is hereby granted,
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9 provided that the above copyright notice appear in all copies and that
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10 both that copyright notice and this permission notice appear in
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11 supporting documentation, and that the names of Stichting Mathematisch
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12 Centrum or CWI or Corporation for National Research Initiatives or
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13 CNRI not be used in advertising or publicity pertaining to
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14 distribution of the software without specific, written prior
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15 permission.
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16
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17 While CWI is the initial source for this software, a modified version
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18 is made available by the Corporation for National Research Initiatives
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19 (CNRI) at the Internet address ftp://ftp.python.org.
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20
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21 STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
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22 REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
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23 MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH
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24 CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
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25 DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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26 PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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27 TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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28 PERFORMANCE OF THIS SOFTWARE.
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29
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30 ******************************************************************/
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31
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32 /* Error handling */
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33
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34 #include "Python.h"
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35
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36 #ifdef SYMANTEC__CFM68K__
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37 #pragma lib_export on
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38 #endif
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39
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40 #ifdef macintosh
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41 extern char *PyMac_StrError Py_PROTO((int));
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42 #undef strerror
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43 #define strerror PyMac_StrError
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44 #endif /* macintosh */
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45
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46 #ifndef __STDC__
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47 #ifndef MS_WINDOWS
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48 extern char *strerror Py_PROTO((int));
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49 #endif
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50 #endif
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51
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52 void
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53 PyErr_Restore(type, value, traceback)
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54 PyObject *type;
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55 PyObject *value;
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56 PyObject *traceback;
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57 {
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58 PyThreadState *tstate = PyThreadState_GET();
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59 PyObject *oldtype, *oldvalue, *oldtraceback;
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60
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61 if (traceback != NULL && !PyTraceBack_Check(traceback)) {
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62 /* XXX Should never happen -- fatal error instead? */
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63 Py_DECREF(traceback);
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64 traceback = NULL;
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65 }
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66
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67 /* Save these in locals to safeguard against recursive
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68 invocation through Py_XDECREF */
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69 oldtype = tstate->curexc_type;
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70 oldvalue = tstate->curexc_value;
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71 oldtraceback = tstate->curexc_traceback;
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72
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73 tstate->curexc_type = type;
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74 tstate->curexc_value = value;
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75 tstate->curexc_traceback = traceback;
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76
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77 Py_XDECREF(oldtype);
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78 Py_XDECREF(oldvalue);
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79 Py_XDECREF(oldtraceback);
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80 }
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81
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82 void
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83 PyErr_SetObject(exception, value)
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84 PyObject *exception;
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85 PyObject *value;
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86 {
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87 Py_XINCREF(exception);
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88 Py_XINCREF(value);
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89 PyErr_Restore(exception, value, (PyObject *)NULL);
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90 }
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91
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92 void
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93 PyErr_SetNone(exception)
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94 PyObject *exception;
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95 {
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96 PyErr_SetObject(exception, (PyObject *)NULL);
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97 }
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99 void
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100 PyErr_SetString(exception, string)
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101 PyObject *exception;
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102 const char *string;
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103 {
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104 PyObject *value = PyString_FromString(string);
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105 PyErr_SetObject(exception, value);
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106 Py_XDECREF(value);
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107 }
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108
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109
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110 PyObject *
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111 PyErr_Occurred()
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112 {
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113 PyThreadState *tstate = PyThreadState_Get();
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114
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115 return tstate->curexc_type;
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116 }
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117
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118
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119 int
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120 PyErr_GivenExceptionMatches(err, exc)
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121 PyObject *err, *exc;
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122 {
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123 if (PyTuple_Check(exc)) {
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124 int i, n;
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125 n = PyTuple_Size(exc);
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126 for (i = 0; i < n; i++) {
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127 /* Test recursively */
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128 if (PyErr_GivenExceptionMatches(
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129 err, PyTuple_GET_ITEM(exc, i)))
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130 {
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131 return 1;
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132 }
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133 }
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134 return 0;
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135 }
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136 /* err might be an instance, so check its class. */
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137 if (PyInstance_Check(err))
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138 err = (PyObject*)((PyInstanceObject*)err)->in_class;
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139
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140 if (PyClass_Check(err) && PyClass_Check(exc))
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141 return PyClass_IsSubclass(err, exc);
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142
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143 return err == exc;
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144 }
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147 int
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parents: 5979
diff changeset
148 PyErr_ExceptionMatches(exc)
a2a1df0ca808 Three new C API functions:
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parents: 5979
diff changeset
149 PyObject *exc;
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
150 {
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
151 return PyErr_GivenExceptionMatches(PyErr_Occurred(), exc);
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
152 }
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
153
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
154
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
155 /* Used in many places to normalize a raised exception, including in
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
156 eval_code2(), do_raise(), and PyErr_Print()
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
157 */
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
158 void
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
159 PyErr_NormalizeException(exc, val, tb)
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
160 PyObject **exc;
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
161 PyObject **val;
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
162 PyObject **tb;
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
163 {
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
164 PyObject *type = *exc;
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
165 PyObject *value = *val;
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
166 PyObject *inclass = NULL;
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
167
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
168 /* If PyErr_SetNone() was used, the value will have been actually
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
169 set to NULL.
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
170 */
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
171 if (!value) {
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
172 value = Py_None;
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
173 Py_INCREF(value);
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
174 }
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
175
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
176 if (PyInstance_Check(value))
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
177 inclass = (PyObject*)((PyInstanceObject*)value)->in_class;
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
178
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
179 /* Normalize the exception so that if the type is a class, the
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
180 value will be an instance.
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
181 */
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
182 if (PyClass_Check(type)) {
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
183 /* if the value was not an instance, or is not an instance
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
184 whose class is (or is derived from) type, then use the
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
185 value as an argument to instantiation of the type
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
186 class.
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
187 */
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
188 if (!inclass || !PyClass_IsSubclass(inclass, type)) {
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
189 PyObject *args, *res;
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
190
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
191 if (value == Py_None)
a2a1df0ca808 Three new C API functions:
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parents: 5979
diff changeset
192 args = Py_BuildValue("()");
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
193 else if (PyTuple_Check(value)) {
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
194 Py_INCREF(value);
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
195 args = value;
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
196 }
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
197 else
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
198 args = Py_BuildValue("(O)", value);
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
199
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
200 if (args == NULL)
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
201 goto finally;
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
202 res = PyEval_CallObject(type, args);
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
203 Py_DECREF(args);
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
204 if (res == NULL)
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
205 goto finally;
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
206 Py_DECREF(value);
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
207 value = res;
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
208 }
6358
9e82dd76288e PyErr_NormalizeException(): If the exception's type is a class and the
Barry Warsaw <barry@python.org>
parents: 6319
diff changeset
209 /* if the class of the instance doesn't exactly match the
9e82dd76288e PyErr_NormalizeException(): If the exception's type is a class and the
Barry Warsaw <barry@python.org>
parents: 6319
diff changeset
210 class of the type, believe the instance
9e82dd76288e PyErr_NormalizeException(): If the exception's type is a class and the
Barry Warsaw <barry@python.org>
parents: 6319
diff changeset
211 */
9e82dd76288e PyErr_NormalizeException(): If the exception's type is a class and the
Barry Warsaw <barry@python.org>
parents: 6319
diff changeset
212 else if (inclass != type) {
9e82dd76288e PyErr_NormalizeException(): If the exception's type is a class and the
Barry Warsaw <barry@python.org>
parents: 6319
diff changeset
213 Py_DECREF(type);
9e82dd76288e PyErr_NormalizeException(): If the exception's type is a class and the
Barry Warsaw <barry@python.org>
parents: 6319
diff changeset
214 type = inclass;
9e82dd76288e PyErr_NormalizeException(): If the exception's type is a class and the
Barry Warsaw <barry@python.org>
parents: 6319
diff changeset
215 Py_INCREF(type);
9e82dd76288e PyErr_NormalizeException(): If the exception's type is a class and the
Barry Warsaw <barry@python.org>
parents: 6319
diff changeset
216 }
6146
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
217 }
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
218 *exc = type;
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
219 *val = value;
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
220 return;
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
221 finally:
6789
bb440a2975ab Fix subtle bug in cleanup code in PyErr_NormalizeException(), detected
Guido van Rossum <guido@python.org>
parents: 6377
diff changeset
222 Py_DECREF(type);
bb440a2975ab Fix subtle bug in cleanup code in PyErr_NormalizeException(), detected
Guido van Rossum <guido@python.org>
parents: 6377
diff changeset
223 Py_DECREF(value);
6146
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
224 Py_XDECREF(*tb);
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
225 PyErr_Fetch(exc, val, tb);
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
226 /* normalize recursively */
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
227 PyErr_NormalizeException(exc, val, tb);
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
228 }
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
229
a2a1df0ca808 Three new C API functions:
Barry Warsaw <barry@python.org>
parents: 5979
diff changeset
230
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
231 void
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 5370
diff changeset
232 PyErr_Fetch(p_type, p_value, p_traceback)
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 5370
diff changeset
233 PyObject **p_type;
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 5370
diff changeset
234 PyObject **p_value;
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 5370
diff changeset
235 PyObject **p_traceback;
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
236 {
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 5370
diff changeset
237 PyThreadState *tstate = PyThreadState_Get();
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 5370
diff changeset
238
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 5370
diff changeset
239 *p_type = tstate->curexc_type;
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 5370
diff changeset
240 *p_value = tstate->curexc_value;
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 5370
diff changeset
241 *p_traceback = tstate->curexc_traceback;
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 5370
diff changeset
242
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 5370
diff changeset
243 tstate->curexc_type = NULL;
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 5370
diff changeset
244 tstate->curexc_value = NULL;
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 5370
diff changeset
245 tstate->curexc_traceback = NULL;
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
246 }
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
247
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
248 void
5370
1ea1f019268d Quickly renamed. Also removed the long comment explaining why this is
Guido van Rossum <guido@python.org>
parents: 5318
diff changeset
249 PyErr_Clear()
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
250 {
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 5370
diff changeset
251 PyErr_Restore(NULL, NULL, NULL);
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
252 }
9
33701db4ea55 Adde dconvenience functions.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
253
33701db4ea55 Adde dconvenience functions.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
254 /* 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
255
33701db4ea55 Adde dconvenience functions.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
256 int
5370
1ea1f019268d Quickly renamed. Also removed the long comment explaining why this is
Guido van Rossum <guido@python.org>
parents: 5318
diff changeset
257 PyErr_BadArgument()
9
33701db4ea55 Adde dconvenience functions.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
258 {
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 5370
diff changeset
259 PyErr_SetString(PyExc_TypeError,
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 5370
diff changeset
260 "illegal argument type for built-in operation");
9
33701db4ea55 Adde dconvenience functions.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
261 return 0;
33701db4ea55 Adde dconvenience functions.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
262 }
33701db4ea55 Adde dconvenience functions.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
263
5370
1ea1f019268d Quickly renamed. Also removed the long comment explaining why this is
Guido van Rossum <guido@python.org>
parents: 5318
diff changeset
264 PyObject *
1ea1f019268d Quickly renamed. Also removed the long comment explaining why this is
Guido van Rossum <guido@python.org>
parents: 5318
diff changeset
265 PyErr_NoMemory()
9
33701db4ea55 Adde dconvenience functions.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
266 {
6190
b5757e87eb32 PyErr_NoMemory(): If the pre-instantiated memory exception is non-null
Barry Warsaw <barry@python.org>
parents: 6146
diff changeset
267 /* raise the pre-allocated instance if it still exists */
b5757e87eb32 PyErr_NoMemory(): If the pre-instantiated memory exception is non-null
Barry Warsaw <barry@python.org>
parents: 6146
diff changeset
268 if (PyExc_MemoryErrorInst)
b5757e87eb32 PyErr_NoMemory(): If the pre-instantiated memory exception is non-null
Barry Warsaw <barry@python.org>
parents: 6146
diff changeset
269 PyErr_SetObject(PyExc_MemoryError, PyExc_MemoryErrorInst);
b5757e87eb32 PyErr_NoMemory(): If the pre-instantiated memory exception is non-null
Barry Warsaw <barry@python.org>
parents: 6146
diff changeset
270 else
b5757e87eb32 PyErr_NoMemory(): If the pre-instantiated memory exception is non-null
Barry Warsaw <barry@python.org>
parents: 6146
diff changeset
271 /* this will probably fail since there's no memory and hee,
b5757e87eb32 PyErr_NoMemory(): If the pre-instantiated memory exception is non-null
Barry Warsaw <barry@python.org>
parents: 6146
diff changeset
272 hee, we have to instantiate this class
b5757e87eb32 PyErr_NoMemory(): If the pre-instantiated memory exception is non-null
Barry Warsaw <barry@python.org>
parents: 6146
diff changeset
273 */
b5757e87eb32 PyErr_NoMemory(): If the pre-instantiated memory exception is non-null
Barry Warsaw <barry@python.org>
parents: 6146
diff changeset
274 PyErr_SetNone(PyExc_MemoryError);
b5757e87eb32 PyErr_NoMemory(): If the pre-instantiated memory exception is non-null
Barry Warsaw <barry@python.org>
parents: 6146
diff changeset
275
9
33701db4ea55 Adde dconvenience functions.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
276 return NULL;
33701db4ea55 Adde dconvenience functions.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
277 }
33701db4ea55 Adde dconvenience functions.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
278
5370
1ea1f019268d Quickly renamed. Also removed the long comment explaining why this is
Guido van Rossum <guido@python.org>
parents: 5318
diff changeset
279 PyObject *
8706
ca1c669bb041 PyErr_SetFromErrnoWithFilename(): New function which supports setting
Barry Warsaw <barry@python.org>
parents: 6789
diff changeset
280 PyErr_SetFromErrnoWithFilename(exc, filename)
5370
1ea1f019268d Quickly renamed. Also removed the long comment explaining why this is
Guido van Rossum <guido@python.org>
parents: 5318
diff changeset
281 PyObject *exc;
8706
ca1c669bb041 PyErr_SetFromErrnoWithFilename(): New function which supports setting
Barry Warsaw <barry@python.org>
parents: 6789
diff changeset
282 char *filename;
9
33701db4ea55 Adde dconvenience functions.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
283 {
5370
1ea1f019268d Quickly renamed. Also removed the long comment explaining why this is
Guido van Rossum <guido@python.org>
parents: 5318
diff changeset
284 PyObject *v;
9365
c80321c328b5 When errno is zero, avoid calling strerror() and use "Error" for the
Guido van Rossum <guido@python.org>
parents: 8706
diff changeset
285 char *s;
1832
79e420805c67 err_clear: clear interpreter stack trace
Guido van Rossum <guido@python.org>
parents: 1319
diff changeset
286 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
287 #ifdef EINTR
5370
1ea1f019268d Quickly renamed. Also removed the long comment explaining why this is
Guido van Rossum <guido@python.org>
parents: 5318
diff changeset
288 if (i == EINTR && PyErr_CheckSignals())
390
172aa2c3e734 Check for EINTR and turn it into KeyboardInterrupt
Guido van Rossum <guido@python.org>
parents: 145
diff changeset
289 return NULL;
2376
c31eaed7798b rename macstrerror to PyMac_StrError; no EINTR test in CW
Guido van Rossum <guido@python.org>
parents: 2190
diff changeset
290 #endif
9365
c80321c328b5 When errno is zero, avoid calling strerror() and use "Error" for the
Guido van Rossum <guido@python.org>
parents: 8706
diff changeset
291 if (i == 0)
c80321c328b5 When errno is zero, avoid calling strerror() and use "Error" for the
Guido van Rossum <guido@python.org>
parents: 8706
diff changeset
292 s = "Error"; /* Sometimes errno didn't get set */
c80321c328b5 When errno is zero, avoid calling strerror() and use "Error" for the
Guido van Rossum <guido@python.org>
parents: 8706
diff changeset
293 else
c80321c328b5 When errno is zero, avoid calling strerror() and use "Error" for the
Guido van Rossum <guido@python.org>
parents: 8706
diff changeset
294 s = strerror(i);
8706
ca1c669bb041 PyErr_SetFromErrnoWithFilename(): New function which supports setting
Barry Warsaw <barry@python.org>
parents: 6789
diff changeset
295 if (filename != NULL && Py_UseClassExceptionsFlag)
9365
c80321c328b5 When errno is zero, avoid calling strerror() and use "Error" for the
Guido van Rossum <guido@python.org>
parents: 8706
diff changeset
296 v = Py_BuildValue("(iss)", i, s, filename);
8706
ca1c669bb041 PyErr_SetFromErrnoWithFilename(): New function which supports setting
Barry Warsaw <barry@python.org>
parents: 6789
diff changeset
297 else
9365
c80321c328b5 When errno is zero, avoid calling strerror() and use "Error" for the
Guido van Rossum <guido@python.org>
parents: 8706
diff changeset
298 v = Py_BuildValue("(is)", i, s);
9
33701db4ea55 Adde dconvenience functions.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
299 if (v != NULL) {
5370
1ea1f019268d Quickly renamed. Also removed the long comment explaining why this is
Guido van Rossum <guido@python.org>
parents: 5318
diff changeset
300 PyErr_SetObject(exc, v);
1ea1f019268d Quickly renamed. Also removed the long comment explaining why this is
Guido van Rossum <guido@python.org>
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diff changeset
301 Py_DECREF(v);
9
33701db4ea55 Adde dconvenience functions.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
302 }
33701db4ea55 Adde dconvenience functions.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
303 return NULL;
33701db4ea55 Adde dconvenience functions.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
304 }
8706
ca1c669bb041 PyErr_SetFromErrnoWithFilename(): New function which supports setting
Barry Warsaw <barry@python.org>
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diff changeset
305
ca1c669bb041 PyErr_SetFromErrnoWithFilename(): New function which supports setting
Barry Warsaw <barry@python.org>
parents: 6789
diff changeset
306
ca1c669bb041 PyErr_SetFromErrnoWithFilename(): New function which supports setting
Barry Warsaw <barry@python.org>
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diff changeset
307 PyObject *
ca1c669bb041 PyErr_SetFromErrnoWithFilename(): New function which supports setting
Barry Warsaw <barry@python.org>
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diff changeset
308 PyErr_SetFromErrno(exc)
ca1c669bb041 PyErr_SetFromErrnoWithFilename(): New function which supports setting
Barry Warsaw <barry@python.org>
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diff changeset
309 PyObject *exc;
ca1c669bb041 PyErr_SetFromErrnoWithFilename(): New function which supports setting
Barry Warsaw <barry@python.org>
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diff changeset
310 {
ca1c669bb041 PyErr_SetFromErrnoWithFilename(): New function which supports setting
Barry Warsaw <barry@python.org>
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diff changeset
311 return PyErr_SetFromErrnoWithFilename(exc, NULL);
ca1c669bb041 PyErr_SetFromErrnoWithFilename(): New function which supports setting
Barry Warsaw <barry@python.org>
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diff changeset
312 }
22
2d3eb717a00d Added err_badcall().
Guido van Rossum <guido@python.org>
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diff changeset
313
2d3eb717a00d Added err_badcall().
Guido van Rossum <guido@python.org>
parents: 9
diff changeset
314 void
5370
1ea1f019268d Quickly renamed. Also removed the long comment explaining why this is
Guido van Rossum <guido@python.org>
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diff changeset
315 PyErr_BadInternalCall()
22
2d3eb717a00d Added err_badcall().
Guido van Rossum <guido@python.org>
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diff changeset
316 {
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
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317 PyErr_SetString(PyExc_SystemError,
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
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318 "bad argument to internal function");
22
2d3eb717a00d Added err_badcall().
Guido van Rossum <guido@python.org>
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diff changeset
319 }
5105
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
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320
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
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321
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
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diff changeset
322 #ifdef HAVE_STDARG_PROTOTYPES
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
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323 PyObject *
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
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324 PyErr_Format(PyObject *exception, const char *format, ...)
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
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diff changeset
325 #else
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
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326 PyObject *
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
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diff changeset
327 PyErr_Format(exception, format, va_alist)
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
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diff changeset
328 PyObject *exception;
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
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diff changeset
329 const char *format;
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
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diff changeset
330 va_dcl
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
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diff changeset
331 #endif
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
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diff changeset
332 {
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
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diff changeset
333 va_list vargs;
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
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diff changeset
334 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>
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diff changeset
335
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
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diff changeset
336 #ifdef HAVE_STDARG_PROTOTYPES
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
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diff changeset
337 va_start(vargs, format);
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
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diff changeset
338 #else
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
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diff changeset
339 va_start(vargs);
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
parents: 4654
diff changeset
340 #endif
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
parents: 4654
diff changeset
341
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
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diff changeset
342 vsprintf(buffer, format, vargs);
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
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diff changeset
343 PyErr_SetString(exception, buffer);
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
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diff changeset
344 return NULL;
00fd6857f76b Added convenience function PyErr_Format(exception, formatstring, ...) -> NULL.
Guido van Rossum <guido@python.org>
parents: 4654
diff changeset
345 }
6319
b7f0b98f5325 New API PyErr_NewException(name, base, dict) to create simple new exceptions.
Guido van Rossum <guido@python.org>
parents: 6190
diff changeset
346
b7f0b98f5325 New API PyErr_NewException(name, base, dict) to create simple new exceptions.
Guido van Rossum <guido@python.org>
parents: 6190
diff changeset
347
b7f0b98f5325 New API PyErr_NewException(name, base, dict) to create simple new exceptions.
Guido van Rossum <guido@python.org>
parents: 6190
diff changeset
348 PyObject *
b7f0b98f5325 New API PyErr_NewException(name, base, dict) to create simple new exceptions.
Guido van Rossum <guido@python.org>
parents: 6190
diff changeset
349 PyErr_NewException(name, base, dict)
6377
4cb223f29337 New version of PyErr_NewException() that is compatible with -X option.
Guido van Rossum <guido@python.org>
parents: 6358
diff changeset
350 char *name; /* modulename.classname */
6319
b7f0b98f5325 New API PyErr_NewException(name, base, dict) to create simple new exceptions.
Guido van Rossum <guido@python.org>
parents: 6190
diff changeset
351 PyObject *base;
b7f0b98f5325 New API PyErr_NewException(name, base, dict) to create simple new exceptions.
Guido van Rossum <guido@python.org>
parents: 6190
diff changeset
352 PyObject *dict;
b7f0b98f5325 New API PyErr_NewException(name, base, dict) to create simple new exceptions.
Guido van Rossum <guido@python.org>
parents: 6190
diff changeset
353 {
6377
4cb223f29337 New version of PyErr_NewException() that is compatible with -X option.
Guido van Rossum <guido@python.org>
parents: 6358
diff changeset
354 char *dot;
4cb223f29337 New version of PyErr_NewException() that is compatible with -X option.
Guido van Rossum <guido@python.org>
parents: 6358
diff changeset
355 PyObject *modulename = NULL;
4cb223f29337 New version of PyErr_NewException() that is compatible with -X option.
Guido van Rossum <guido@python.org>
parents: 6358
diff changeset
356 PyObject *classname = NULL;
4cb223f29337 New version of PyErr_NewException() that is compatible with -X option.
Guido van Rossum <guido@python.org>
parents: 6358
diff changeset
357 PyObject *mydict = NULL;
4cb223f29337 New version of PyErr_NewException() that is compatible with -X option.
Guido van Rossum <guido@python.org>
parents: 6358
diff changeset
358 PyObject *bases = NULL;
6319
b7f0b98f5325 New API PyErr_NewException(name, base, dict) to create simple new exceptions.
Guido van Rossum <guido@python.org>
parents: 6190
diff changeset
359 PyObject *result = NULL;
6377
4cb223f29337 New version of PyErr_NewException() that is compatible with -X option.
Guido van Rossum <guido@python.org>
parents: 6358
diff changeset
360 dot = strrchr(name, '.');
4cb223f29337 New version of PyErr_NewException() that is compatible with -X option.
Guido van Rossum <guido@python.org>
parents: 6358
diff changeset
361 if (dot == NULL) {
4cb223f29337 New version of PyErr_NewException() that is compatible with -X option.
Guido van Rossum <guido@python.org>
parents: 6358
diff changeset
362 PyErr_SetString(PyExc_SystemError,
4cb223f29337 New version of PyErr_NewException() that is compatible with -X option.
Guido van Rossum <guido@python.org>
parents: 6358
diff changeset
363 "PyErr_NewException: name must be module.class");
6319
b7f0b98f5325 New API PyErr_NewException(name, base, dict) to create simple new exceptions.
Guido van Rossum <guido@python.org>
parents: 6190
diff changeset
364 return NULL;
6377
4cb223f29337 New version of PyErr_NewException() that is compatible with -X option.
Guido van Rossum <guido@python.org>
parents: 6358
diff changeset
365 }
4cb223f29337 New version of PyErr_NewException() that is compatible with -X option.
Guido van Rossum <guido@python.org>
parents: 6358
diff changeset
366 if (base == NULL)
4cb223f29337 New version of PyErr_NewException() that is compatible with -X option.
Guido van Rossum <guido@python.org>
parents: 6358
diff changeset
367 base = PyExc_Exception;
4cb223f29337 New version of PyErr_NewException() that is compatible with -X option.
Guido van Rossum <guido@python.org>
parents: 6358
diff changeset
368 if (!PyClass_Check(base)) {
4cb223f29337 New version of PyErr_NewException() that is compatible with -X option.
Guido van Rossum <guido@python.org>
parents: 6358
diff changeset
369 /* Must be using string-based standard exceptions (-X) */
4cb223f29337 New version of PyErr_NewException() that is compatible with -X option.
Guido van Rossum <guido@python.org>
parents: 6358
diff changeset
370 return PyString_FromString(name);
4cb223f29337 New version of PyErr_NewException() that is compatible with -X option.
Guido van Rossum <guido@python.org>
parents: 6358
diff changeset
371 }
6319
b7f0b98f5325 New API PyErr_NewException(name, base, dict) to create simple new exceptions.
Guido van Rossum <guido@python.org>
parents: 6190
diff changeset
372 if (dict == NULL) {
6377
4cb223f29337 New version of PyErr_NewException() that is compatible with -X option.
Guido van Rossum <guido@python.org>
parents: 6358
diff changeset
373 dict = mydict = PyDict_New();
6319
b7f0b98f5325 New API PyErr_NewException(name, base, dict) to create simple new exceptions.
Guido van Rossum <guido@python.org>
parents: 6190
diff changeset
374 if (dict == NULL)
b7f0b98f5325 New API PyErr_NewException(name, base, dict) to create simple new exceptions.
Guido van Rossum <guido@python.org>
parents: 6190
diff changeset
375 goto failure;
b7f0b98f5325 New API PyErr_NewException(name, base, dict) to create simple new exceptions.
Guido van Rossum <guido@python.org>
parents: 6190
diff changeset
376 }
6377
4cb223f29337 New version of PyErr_NewException() that is compatible with -X option.
Guido van Rossum <guido@python.org>
parents: 6358
diff changeset
377 if (PyDict_GetItemString(dict, "__module__") == NULL) {
4cb223f29337 New version of PyErr_NewException() that is compatible with -X option.
Guido van Rossum <guido@python.org>
parents: 6358
diff changeset
378 modulename = PyString_FromStringAndSize(name, (int)(dot-name));
4cb223f29337 New version of PyErr_NewException() that is compatible with -X option.
Guido van Rossum <guido@python.org>
parents: 6358
diff changeset
379 if (modulename == NULL)
4cb223f29337 New version of PyErr_NewException() that is compatible with -X option.
Guido van Rossum <guido@python.org>
parents: 6358
diff changeset
380 goto failure;
4cb223f29337 New version of PyErr_NewException() that is compatible with -X option.
Guido van Rossum <guido@python.org>
parents: 6358
diff changeset
381 if (PyDict_SetItemString(dict, "__module__", modulename) != 0)
4cb223f29337 New version of PyErr_NewException() that is compatible with -X option.
Guido van Rossum <guido@python.org>
parents: 6358
diff changeset
382 goto failure;
4cb223f29337 New version of PyErr_NewException() that is compatible with -X option.
Guido van Rossum <guido@python.org>
parents: 6358
diff changeset
383 }
4cb223f29337 New version of PyErr_NewException() that is compatible with -X option.
Guido van Rossum <guido@python.org>
parents: 6358
diff changeset
384 classname = PyString_FromString(dot+1);
4cb223f29337 New version of PyErr_NewException() that is compatible with -X option.
Guido van Rossum <guido@python.org>
parents: 6358
diff changeset
385 if (classname == NULL)
6319
b7f0b98f5325 New API PyErr_NewException(name, base, dict) to create simple new exceptions.
Guido van Rossum <guido@python.org>
parents: 6190
diff changeset
386 goto failure;
6377
4cb223f29337 New version of PyErr_NewException() that is compatible with -X option.
Guido van Rossum <guido@python.org>
parents: 6358
diff changeset
387 bases = Py_BuildValue("(O)", base);
4cb223f29337 New version of PyErr_NewException() that is compatible with -X option.
Guido van Rossum <guido@python.org>
parents: 6358
diff changeset
388 if (bases == NULL)
4cb223f29337 New version of PyErr_NewException() that is compatible with -X option.
Guido van Rossum <guido@python.org>
parents: 6358
diff changeset
389 goto failure;
4cb223f29337 New version of PyErr_NewException() that is compatible with -X option.
Guido van Rossum <guido@python.org>
parents: 6358
diff changeset
390 result = PyClass_New(bases, dict, classname);
6319
b7f0b98f5325 New API PyErr_NewException(name, base, dict) to create simple new exceptions.
Guido van Rossum <guido@python.org>
parents: 6190
diff changeset
391 failure:
6377
4cb223f29337 New version of PyErr_NewException() that is compatible with -X option.
Guido van Rossum <guido@python.org>
parents: 6358
diff changeset
392 Py_XDECREF(bases);
4cb223f29337 New version of PyErr_NewException() that is compatible with -X option.
Guido van Rossum <guido@python.org>
parents: 6358
diff changeset
393 Py_XDECREF(mydict);
4cb223f29337 New version of PyErr_NewException() that is compatible with -X option.
Guido van Rossum <guido@python.org>
parents: 6358
diff changeset
394 Py_XDECREF(classname);
4cb223f29337 New version of PyErr_NewException() that is compatible with -X option.
Guido van Rossum <guido@python.org>
parents: 6358
diff changeset
395 Py_XDECREF(modulename);
6319
b7f0b98f5325 New API PyErr_NewException(name, base, dict) to create simple new exceptions.
Guido van Rossum <guido@python.org>
parents: 6190
diff changeset
396 return result;
b7f0b98f5325 New API PyErr_NewException(name, base, dict) to create simple new exceptions.
Guido van Rossum <guido@python.org>
parents: 6190
diff changeset
397 }