mirror of
https://github.com/python/cpython.git
synced 2024-12-14 20:34:12 +08:00
8223c24d07
svn+ssh://pythondev@svn.python.org/python/trunk ........ r72698 | hirokazu.yamamoto | 2009-05-17 11:52:09 +0900 | 1 line Issue #3527: Removed Py_WIN_WIDE_FILENAMES which is not used any more. ........ r72699 | hirokazu.yamamoto | 2009-05-17 11:58:36 +0900 | 1 line Added NEWS for r72698. ........
863 lines
20 KiB
C
863 lines
20 KiB
C
|
|
/* Error handling */
|
|
|
|
#include "Python.h"
|
|
|
|
#ifndef __STDC__
|
|
#ifndef MS_WINDOWS
|
|
extern char *strerror(int);
|
|
#endif
|
|
#endif
|
|
|
|
#ifdef MS_WINDOWS
|
|
#include <windows.h>
|
|
#include <winbase.h>
|
|
#endif
|
|
|
|
#include <ctype.h>
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
|
|
void
|
|
PyErr_Restore(PyObject *type, PyObject *value, PyObject *traceback)
|
|
{
|
|
PyThreadState *tstate = PyThreadState_GET();
|
|
PyObject *oldtype, *oldvalue, *oldtraceback;
|
|
|
|
if (traceback != NULL && !PyTraceBack_Check(traceback)) {
|
|
/* XXX Should never happen -- fatal error instead? */
|
|
/* Well, it could be None. */
|
|
Py_DECREF(traceback);
|
|
traceback = NULL;
|
|
}
|
|
|
|
/* Save these in locals to safeguard against recursive
|
|
invocation through Py_XDECREF */
|
|
oldtype = tstate->curexc_type;
|
|
oldvalue = tstate->curexc_value;
|
|
oldtraceback = tstate->curexc_traceback;
|
|
|
|
tstate->curexc_type = type;
|
|
tstate->curexc_value = value;
|
|
tstate->curexc_traceback = traceback;
|
|
|
|
Py_XDECREF(oldtype);
|
|
Py_XDECREF(oldvalue);
|
|
Py_XDECREF(oldtraceback);
|
|
}
|
|
|
|
void
|
|
PyErr_SetObject(PyObject *exception, PyObject *value)
|
|
{
|
|
PyThreadState *tstate = PyThreadState_GET();
|
|
PyObject *exc_value;
|
|
PyObject *tb = NULL;
|
|
|
|
if (exception != NULL &&
|
|
!PyExceptionClass_Check(exception)) {
|
|
PyErr_Format(PyExc_SystemError,
|
|
"exception %R not a BaseException subclass",
|
|
exception);
|
|
return;
|
|
}
|
|
Py_XINCREF(value);
|
|
exc_value = tstate->exc_value;
|
|
if (exc_value != NULL && exc_value != Py_None) {
|
|
/* Implicit exception chaining */
|
|
Py_INCREF(exc_value);
|
|
if (value == NULL || !PyExceptionInstance_Check(value)) {
|
|
/* We must normalize the value right now */
|
|
PyObject *args, *fixed_value;
|
|
if (value == NULL || value == Py_None)
|
|
args = PyTuple_New(0);
|
|
else if (PyTuple_Check(value)) {
|
|
Py_INCREF(value);
|
|
args = value;
|
|
}
|
|
else
|
|
args = PyTuple_Pack(1, value);
|
|
fixed_value = args ?
|
|
PyEval_CallObject(exception, args) : NULL;
|
|
Py_XDECREF(args);
|
|
Py_XDECREF(value);
|
|
if (fixed_value == NULL)
|
|
return;
|
|
value = fixed_value;
|
|
}
|
|
/* Avoid reference cycles through the context chain.
|
|
This is O(chain length) but context chains are
|
|
usually very short. Sensitive readers may try
|
|
to inline the call to PyException_GetContext. */
|
|
if (exc_value != value) {
|
|
PyObject *o = exc_value, *context;
|
|
while ((context = PyException_GetContext(o))) {
|
|
Py_DECREF(context);
|
|
if (context == value) {
|
|
PyException_SetContext(o, NULL);
|
|
break;
|
|
}
|
|
o = context;
|
|
}
|
|
PyException_SetContext(value, exc_value);
|
|
} else {
|
|
Py_DECREF(exc_value);
|
|
}
|
|
}
|
|
if (value != NULL && PyExceptionInstance_Check(value))
|
|
tb = PyException_GetTraceback(value);
|
|
Py_XINCREF(exception);
|
|
PyErr_Restore(exception, value, tb);
|
|
}
|
|
|
|
void
|
|
PyErr_SetNone(PyObject *exception)
|
|
{
|
|
PyErr_SetObject(exception, (PyObject *)NULL);
|
|
}
|
|
|
|
void
|
|
PyErr_SetString(PyObject *exception, const char *string)
|
|
{
|
|
PyObject *value = PyUnicode_FromString(string);
|
|
PyErr_SetObject(exception, value);
|
|
Py_XDECREF(value);
|
|
}
|
|
|
|
|
|
PyObject *
|
|
PyErr_Occurred(void)
|
|
{
|
|
PyThreadState *tstate = PyThreadState_GET();
|
|
|
|
return tstate->curexc_type;
|
|
}
|
|
|
|
|
|
int
|
|
PyErr_GivenExceptionMatches(PyObject *err, PyObject *exc)
|
|
{
|
|
if (err == NULL || exc == NULL) {
|
|
/* maybe caused by "import exceptions" that failed early on */
|
|
return 0;
|
|
}
|
|
if (PyTuple_Check(exc)) {
|
|
Py_ssize_t i, n;
|
|
n = PyTuple_Size(exc);
|
|
for (i = 0; i < n; i++) {
|
|
/* Test recursively */
|
|
if (PyErr_GivenExceptionMatches(
|
|
err, PyTuple_GET_ITEM(exc, i)))
|
|
{
|
|
return 1;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
/* err might be an instance, so check its class. */
|
|
if (PyExceptionInstance_Check(err))
|
|
err = PyExceptionInstance_Class(err);
|
|
|
|
if (PyExceptionClass_Check(err) && PyExceptionClass_Check(exc)) {
|
|
int res = 0;
|
|
PyObject *exception, *value, *tb;
|
|
PyErr_Fetch(&exception, &value, &tb);
|
|
/* PyObject_IsSubclass() can recurse and therefore is
|
|
not safe (see test_bad_getattr in test.pickletester). */
|
|
res = PyType_IsSubtype((PyTypeObject *)err, (PyTypeObject *)exc);
|
|
/* This function must not fail, so print the error here */
|
|
if (res == -1) {
|
|
PyErr_WriteUnraisable(err);
|
|
res = 0;
|
|
}
|
|
PyErr_Restore(exception, value, tb);
|
|
return res;
|
|
}
|
|
|
|
return err == exc;
|
|
}
|
|
|
|
|
|
int
|
|
PyErr_ExceptionMatches(PyObject *exc)
|
|
{
|
|
return PyErr_GivenExceptionMatches(PyErr_Occurred(), exc);
|
|
}
|
|
|
|
|
|
/* Used in many places to normalize a raised exception, including in
|
|
eval_code2(), do_raise(), and PyErr_Print()
|
|
|
|
XXX: should PyErr_NormalizeException() also call
|
|
PyException_SetTraceback() with the resulting value and tb?
|
|
*/
|
|
void
|
|
PyErr_NormalizeException(PyObject **exc, PyObject **val, PyObject **tb)
|
|
{
|
|
PyObject *type = *exc;
|
|
PyObject *value = *val;
|
|
PyObject *inclass = NULL;
|
|
PyObject *initial_tb = NULL;
|
|
PyThreadState *tstate = NULL;
|
|
|
|
if (type == NULL) {
|
|
/* There was no exception, so nothing to do. */
|
|
return;
|
|
}
|
|
|
|
/* If PyErr_SetNone() was used, the value will have been actually
|
|
set to NULL.
|
|
*/
|
|
if (!value) {
|
|
value = Py_None;
|
|
Py_INCREF(value);
|
|
}
|
|
|
|
if (PyExceptionInstance_Check(value))
|
|
inclass = PyExceptionInstance_Class(value);
|
|
|
|
/* Normalize the exception so that if the type is a class, the
|
|
value will be an instance.
|
|
*/
|
|
if (PyExceptionClass_Check(type)) {
|
|
/* if the value was not an instance, or is not an instance
|
|
whose class is (or is derived from) type, then use the
|
|
value as an argument to instantiation of the type
|
|
class.
|
|
*/
|
|
if (!inclass || !PyObject_IsSubclass(inclass, type)) {
|
|
PyObject *args, *res;
|
|
|
|
if (value == Py_None)
|
|
args = PyTuple_New(0);
|
|
else if (PyTuple_Check(value)) {
|
|
Py_INCREF(value);
|
|
args = value;
|
|
}
|
|
else
|
|
args = PyTuple_Pack(1, value);
|
|
|
|
if (args == NULL)
|
|
goto finally;
|
|
res = PyEval_CallObject(type, args);
|
|
Py_DECREF(args);
|
|
if (res == NULL)
|
|
goto finally;
|
|
Py_DECREF(value);
|
|
value = res;
|
|
}
|
|
/* if the class of the instance doesn't exactly match the
|
|
class of the type, believe the instance
|
|
*/
|
|
else if (inclass != type) {
|
|
Py_DECREF(type);
|
|
type = inclass;
|
|
Py_INCREF(type);
|
|
}
|
|
}
|
|
*exc = type;
|
|
*val = value;
|
|
return;
|
|
finally:
|
|
Py_DECREF(type);
|
|
Py_DECREF(value);
|
|
/* If the new exception doesn't set a traceback and the old
|
|
exception had a traceback, use the old traceback for the
|
|
new exception. It's better than nothing.
|
|
*/
|
|
initial_tb = *tb;
|
|
PyErr_Fetch(exc, val, tb);
|
|
if (initial_tb != NULL) {
|
|
if (*tb == NULL)
|
|
*tb = initial_tb;
|
|
else
|
|
Py_DECREF(initial_tb);
|
|
}
|
|
/* normalize recursively */
|
|
tstate = PyThreadState_GET();
|
|
if (++tstate->recursion_depth > Py_GetRecursionLimit()) {
|
|
--tstate->recursion_depth;
|
|
/* throw away the old exception... */
|
|
Py_DECREF(*exc);
|
|
Py_DECREF(*val);
|
|
/* ... and use the recursion error instead */
|
|
*exc = PyExc_RuntimeError;
|
|
*val = PyExc_RecursionErrorInst;
|
|
Py_INCREF(*exc);
|
|
Py_INCREF(*val);
|
|
/* just keeping the old traceback */
|
|
return;
|
|
}
|
|
PyErr_NormalizeException(exc, val, tb);
|
|
--tstate->recursion_depth;
|
|
}
|
|
|
|
|
|
void
|
|
PyErr_Fetch(PyObject **p_type, PyObject **p_value, PyObject **p_traceback)
|
|
{
|
|
PyThreadState *tstate = PyThreadState_GET();
|
|
|
|
*p_type = tstate->curexc_type;
|
|
*p_value = tstate->curexc_value;
|
|
*p_traceback = tstate->curexc_traceback;
|
|
|
|
tstate->curexc_type = NULL;
|
|
tstate->curexc_value = NULL;
|
|
tstate->curexc_traceback = NULL;
|
|
}
|
|
|
|
void
|
|
PyErr_Clear(void)
|
|
{
|
|
PyErr_Restore(NULL, NULL, NULL);
|
|
}
|
|
|
|
/* Convenience functions to set a type error exception and return 0 */
|
|
|
|
int
|
|
PyErr_BadArgument(void)
|
|
{
|
|
PyErr_SetString(PyExc_TypeError,
|
|
"bad argument type for built-in operation");
|
|
return 0;
|
|
}
|
|
|
|
PyObject *
|
|
PyErr_NoMemory(void)
|
|
{
|
|
if (PyErr_ExceptionMatches(PyExc_MemoryError))
|
|
/* already current */
|
|
return NULL;
|
|
|
|
/* raise the pre-allocated instance if it still exists */
|
|
if (PyExc_MemoryErrorInst)
|
|
{
|
|
/* Clear the previous traceback, otherwise it will be appended
|
|
* to the current one.
|
|
*
|
|
* The following statement is not likely to raise any error;
|
|
* if it does, we simply discard it.
|
|
*/
|
|
PyException_SetTraceback(PyExc_MemoryErrorInst, Py_None);
|
|
|
|
PyErr_SetObject(PyExc_MemoryError, PyExc_MemoryErrorInst);
|
|
}
|
|
else
|
|
/* this will probably fail since there's no memory and hee,
|
|
hee, we have to instantiate this class
|
|
*/
|
|
PyErr_SetNone(PyExc_MemoryError);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
PyObject *
|
|
PyErr_SetFromErrnoWithFilenameObject(PyObject *exc, PyObject *filenameObject)
|
|
{
|
|
PyObject *message;
|
|
PyObject *v;
|
|
int i = errno;
|
|
#ifdef PLAN9
|
|
char errbuf[ERRMAX];
|
|
#else
|
|
#ifndef MS_WINDOWS
|
|
char *s;
|
|
#else
|
|
WCHAR *s_buf = NULL;
|
|
#endif /* Unix/Windows */
|
|
#endif /* PLAN 9*/
|
|
|
|
#ifdef EINTR
|
|
if (i == EINTR && PyErr_CheckSignals())
|
|
return NULL;
|
|
#endif
|
|
|
|
#ifdef PLAN9
|
|
rerrstr(errbuf, sizeof errbuf);
|
|
message = PyUnicode_DecodeUTF8(errbuf, strlen(errbuf), "ignore");
|
|
#else
|
|
#ifndef MS_WINDOWS
|
|
if (i == 0)
|
|
s = "Error"; /* Sometimes errno didn't get set */
|
|
else
|
|
s = strerror(i);
|
|
message = PyUnicode_DecodeUTF8(s, strlen(s), "ignore");
|
|
#else
|
|
if (i == 0)
|
|
message = PyUnicode_FromString("Error"); /* Sometimes errno didn't get set */
|
|
else
|
|
{
|
|
/* Note that the Win32 errors do not lineup with the
|
|
errno error. So if the error is in the MSVC error
|
|
table, we use it, otherwise we assume it really _is_
|
|
a Win32 error code
|
|
*/
|
|
if (i > 0 && i < _sys_nerr) {
|
|
message = PyUnicode_FromString(_sys_errlist[i]);
|
|
}
|
|
else {
|
|
int len = FormatMessageW(
|
|
FORMAT_MESSAGE_ALLOCATE_BUFFER |
|
|
FORMAT_MESSAGE_FROM_SYSTEM |
|
|
FORMAT_MESSAGE_IGNORE_INSERTS,
|
|
NULL, /* no message source */
|
|
i,
|
|
MAKELANGID(LANG_NEUTRAL,
|
|
SUBLANG_DEFAULT),
|
|
/* Default language */
|
|
(LPWSTR) &s_buf,
|
|
0, /* size not used */
|
|
NULL); /* no args */
|
|
if (len==0) {
|
|
/* Only ever seen this in out-of-mem
|
|
situations */
|
|
s_buf = NULL;
|
|
message = PyUnicode_FromFormat("Windows Error 0x%X", i);
|
|
} else {
|
|
/* remove trailing cr/lf and dots */
|
|
while (len > 0 && (s_buf[len-1] <= L' ' || s_buf[len-1] == L'.'))
|
|
s_buf[--len] = L'\0';
|
|
message = PyUnicode_FromUnicode(s_buf, len);
|
|
}
|
|
}
|
|
}
|
|
#endif /* Unix/Windows */
|
|
#endif /* PLAN 9*/
|
|
|
|
if (message == NULL)
|
|
{
|
|
#ifdef MS_WINDOWS
|
|
LocalFree(s_buf);
|
|
#endif
|
|
return NULL;
|
|
}
|
|
|
|
if (filenameObject != NULL)
|
|
v = Py_BuildValue("(iOO)", i, message, filenameObject);
|
|
else
|
|
v = Py_BuildValue("(iO)", i, message);
|
|
Py_DECREF(message);
|
|
|
|
if (v != NULL) {
|
|
PyErr_SetObject(exc, v);
|
|
Py_DECREF(v);
|
|
}
|
|
#ifdef MS_WINDOWS
|
|
LocalFree(s_buf);
|
|
#endif
|
|
return NULL;
|
|
}
|
|
|
|
|
|
PyObject *
|
|
PyErr_SetFromErrnoWithFilename(PyObject *exc, const char *filename)
|
|
{
|
|
PyObject *name = filename ? PyUnicode_FromString(filename) : NULL;
|
|
PyObject *result = PyErr_SetFromErrnoWithFilenameObject(exc, name);
|
|
Py_XDECREF(name);
|
|
return result;
|
|
}
|
|
|
|
#ifdef MS_WINDOWS
|
|
PyObject *
|
|
PyErr_SetFromErrnoWithUnicodeFilename(PyObject *exc, const Py_UNICODE *filename)
|
|
{
|
|
PyObject *name = filename ?
|
|
PyUnicode_FromUnicode(filename, wcslen(filename)) :
|
|
NULL;
|
|
PyObject *result = PyErr_SetFromErrnoWithFilenameObject(exc, name);
|
|
Py_XDECREF(name);
|
|
return result;
|
|
}
|
|
#endif /* MS_WINDOWS */
|
|
|
|
PyObject *
|
|
PyErr_SetFromErrno(PyObject *exc)
|
|
{
|
|
return PyErr_SetFromErrnoWithFilenameObject(exc, NULL);
|
|
}
|
|
|
|
#ifdef MS_WINDOWS
|
|
/* Windows specific error code handling */
|
|
PyObject *PyErr_SetExcFromWindowsErrWithFilenameObject(
|
|
PyObject *exc,
|
|
int ierr,
|
|
PyObject *filenameObject)
|
|
{
|
|
int len;
|
|
WCHAR *s_buf = NULL; /* Free via LocalFree */
|
|
PyObject *message;
|
|
PyObject *v;
|
|
DWORD err = (DWORD)ierr;
|
|
if (err==0) err = GetLastError();
|
|
len = FormatMessageW(
|
|
/* Error API error */
|
|
FORMAT_MESSAGE_ALLOCATE_BUFFER |
|
|
FORMAT_MESSAGE_FROM_SYSTEM |
|
|
FORMAT_MESSAGE_IGNORE_INSERTS,
|
|
NULL, /* no message source */
|
|
err,
|
|
MAKELANGID(LANG_NEUTRAL,
|
|
SUBLANG_DEFAULT), /* Default language */
|
|
(LPWSTR) &s_buf,
|
|
0, /* size not used */
|
|
NULL); /* no args */
|
|
if (len==0) {
|
|
/* Only seen this in out of mem situations */
|
|
message = PyUnicode_FromFormat("Windows Error 0x%X", err);
|
|
s_buf = NULL;
|
|
} else {
|
|
/* remove trailing cr/lf and dots */
|
|
while (len > 0 && (s_buf[len-1] <= L' ' || s_buf[len-1] == L'.'))
|
|
s_buf[--len] = L'\0';
|
|
message = PyUnicode_FromUnicode(s_buf, len);
|
|
}
|
|
|
|
if (message == NULL)
|
|
{
|
|
LocalFree(s_buf);
|
|
return NULL;
|
|
}
|
|
|
|
if (filenameObject != NULL)
|
|
v = Py_BuildValue("(iOO)", err, message, filenameObject);
|
|
else
|
|
v = Py_BuildValue("(iO)", err, message);
|
|
Py_DECREF(message);
|
|
|
|
if (v != NULL) {
|
|
PyErr_SetObject(exc, v);
|
|
Py_DECREF(v);
|
|
}
|
|
LocalFree(s_buf);
|
|
return NULL;
|
|
}
|
|
|
|
PyObject *PyErr_SetExcFromWindowsErrWithFilename(
|
|
PyObject *exc,
|
|
int ierr,
|
|
const char *filename)
|
|
{
|
|
PyObject *name = filename ? PyUnicode_FromString(filename) : NULL;
|
|
PyObject *ret = PyErr_SetExcFromWindowsErrWithFilenameObject(exc,
|
|
ierr,
|
|
name);
|
|
Py_XDECREF(name);
|
|
return ret;
|
|
}
|
|
|
|
PyObject *PyErr_SetExcFromWindowsErrWithUnicodeFilename(
|
|
PyObject *exc,
|
|
int ierr,
|
|
const Py_UNICODE *filename)
|
|
{
|
|
PyObject *name = filename ?
|
|
PyUnicode_FromUnicode(filename, wcslen(filename)) :
|
|
NULL;
|
|
PyObject *ret = PyErr_SetExcFromWindowsErrWithFilenameObject(exc,
|
|
ierr,
|
|
name);
|
|
Py_XDECREF(name);
|
|
return ret;
|
|
}
|
|
|
|
PyObject *PyErr_SetExcFromWindowsErr(PyObject *exc, int ierr)
|
|
{
|
|
return PyErr_SetExcFromWindowsErrWithFilename(exc, ierr, NULL);
|
|
}
|
|
|
|
PyObject *PyErr_SetFromWindowsErr(int ierr)
|
|
{
|
|
return PyErr_SetExcFromWindowsErrWithFilename(PyExc_WindowsError,
|
|
ierr, NULL);
|
|
}
|
|
PyObject *PyErr_SetFromWindowsErrWithFilename(
|
|
int ierr,
|
|
const char *filename)
|
|
{
|
|
PyObject *name = filename ? PyUnicode_FromString(filename) : NULL;
|
|
PyObject *result = PyErr_SetExcFromWindowsErrWithFilenameObject(
|
|
PyExc_WindowsError,
|
|
ierr, name);
|
|
Py_XDECREF(name);
|
|
return result;
|
|
}
|
|
|
|
PyObject *PyErr_SetFromWindowsErrWithUnicodeFilename(
|
|
int ierr,
|
|
const Py_UNICODE *filename)
|
|
{
|
|
PyObject *name = filename ?
|
|
PyUnicode_FromUnicode(filename, wcslen(filename)) :
|
|
NULL;
|
|
PyObject *result = PyErr_SetExcFromWindowsErrWithFilenameObject(
|
|
PyExc_WindowsError,
|
|
ierr, name);
|
|
Py_XDECREF(name);
|
|
return result;
|
|
}
|
|
#endif /* MS_WINDOWS */
|
|
|
|
void
|
|
_PyErr_BadInternalCall(const char *filename, int lineno)
|
|
{
|
|
PyErr_Format(PyExc_SystemError,
|
|
"%s:%d: bad argument to internal function",
|
|
filename, lineno);
|
|
}
|
|
|
|
/* Remove the preprocessor macro for PyErr_BadInternalCall() so that we can
|
|
export the entry point for existing object code: */
|
|
#undef PyErr_BadInternalCall
|
|
void
|
|
PyErr_BadInternalCall(void)
|
|
{
|
|
PyErr_Format(PyExc_SystemError,
|
|
"bad argument to internal function");
|
|
}
|
|
#define PyErr_BadInternalCall() _PyErr_BadInternalCall(__FILE__, __LINE__)
|
|
|
|
|
|
|
|
PyObject *
|
|
PyErr_Format(PyObject *exception, const char *format, ...)
|
|
{
|
|
va_list vargs;
|
|
PyObject* string;
|
|
|
|
#ifdef HAVE_STDARG_PROTOTYPES
|
|
va_start(vargs, format);
|
|
#else
|
|
va_start(vargs);
|
|
#endif
|
|
|
|
string = PyUnicode_FromFormatV(format, vargs);
|
|
PyErr_SetObject(exception, string);
|
|
Py_XDECREF(string);
|
|
va_end(vargs);
|
|
return NULL;
|
|
}
|
|
|
|
|
|
|
|
PyObject *
|
|
PyErr_NewException(const char *name, PyObject *base, PyObject *dict)
|
|
{
|
|
const char *dot;
|
|
PyObject *modulename = NULL;
|
|
PyObject *classname = NULL;
|
|
PyObject *mydict = NULL;
|
|
PyObject *bases = NULL;
|
|
PyObject *result = NULL;
|
|
dot = strrchr(name, '.');
|
|
if (dot == NULL) {
|
|
PyErr_SetString(PyExc_SystemError,
|
|
"PyErr_NewException: name must be module.class");
|
|
return NULL;
|
|
}
|
|
if (base == NULL)
|
|
base = PyExc_Exception;
|
|
if (dict == NULL) {
|
|
dict = mydict = PyDict_New();
|
|
if (dict == NULL)
|
|
goto failure;
|
|
}
|
|
if (PyDict_GetItemString(dict, "__module__") == NULL) {
|
|
modulename = PyUnicode_FromStringAndSize(name,
|
|
(Py_ssize_t)(dot-name));
|
|
if (modulename == NULL)
|
|
goto failure;
|
|
if (PyDict_SetItemString(dict, "__module__", modulename) != 0)
|
|
goto failure;
|
|
}
|
|
if (PyTuple_Check(base)) {
|
|
bases = base;
|
|
/* INCREF as we create a new ref in the else branch */
|
|
Py_INCREF(bases);
|
|
} else {
|
|
bases = PyTuple_Pack(1, base);
|
|
if (bases == NULL)
|
|
goto failure;
|
|
}
|
|
/* Create a real new-style class. */
|
|
result = PyObject_CallFunction((PyObject *)&PyType_Type, "UOO",
|
|
dot+1, bases, dict);
|
|
failure:
|
|
Py_XDECREF(bases);
|
|
Py_XDECREF(mydict);
|
|
Py_XDECREF(classname);
|
|
Py_XDECREF(modulename);
|
|
return result;
|
|
}
|
|
|
|
/* Call when an exception has occurred but there is no way for Python
|
|
to handle it. Examples: exception in __del__ or during GC. */
|
|
void
|
|
PyErr_WriteUnraisable(PyObject *obj)
|
|
{
|
|
PyObject *f, *t, *v, *tb;
|
|
PyErr_Fetch(&t, &v, &tb);
|
|
f = PySys_GetObject("stderr");
|
|
if (f != NULL && f != Py_None) {
|
|
PyFile_WriteString("Exception ", f);
|
|
if (t) {
|
|
PyObject* moduleName;
|
|
char* className;
|
|
assert(PyExceptionClass_Check(t));
|
|
className = PyExceptionClass_Name(t);
|
|
if (className != NULL) {
|
|
char *dot = strrchr(className, '.');
|
|
if (dot != NULL)
|
|
className = dot+1;
|
|
}
|
|
|
|
moduleName = PyObject_GetAttrString(t, "__module__");
|
|
if (moduleName == NULL)
|
|
PyFile_WriteString("<unknown>", f);
|
|
else {
|
|
char* modstr = _PyUnicode_AsString(moduleName);
|
|
if (modstr &&
|
|
strcmp(modstr, "builtins") != 0)
|
|
{
|
|
PyFile_WriteString(modstr, f);
|
|
PyFile_WriteString(".", f);
|
|
}
|
|
}
|
|
if (className == NULL)
|
|
PyFile_WriteString("<unknown>", f);
|
|
else
|
|
PyFile_WriteString(className, f);
|
|
if (v && v != Py_None) {
|
|
PyFile_WriteString(": ", f);
|
|
PyFile_WriteObject(v, f, 0);
|
|
}
|
|
Py_XDECREF(moduleName);
|
|
}
|
|
PyFile_WriteString(" in ", f);
|
|
PyFile_WriteObject(obj, f, 0);
|
|
PyFile_WriteString(" ignored\n", f);
|
|
PyErr_Clear(); /* Just in case */
|
|
}
|
|
Py_XDECREF(t);
|
|
Py_XDECREF(v);
|
|
Py_XDECREF(tb);
|
|
}
|
|
|
|
extern PyObject *PyModule_GetWarningsModule(void);
|
|
|
|
|
|
/* Set file and line information for the current exception.
|
|
If the exception is not a SyntaxError, also sets additional attributes
|
|
to make printing of exceptions believe it is a syntax error. */
|
|
|
|
void
|
|
PyErr_SyntaxLocation(const char *filename, int lineno)
|
|
{
|
|
PyObject *exc, *v, *tb, *tmp;
|
|
|
|
/* add attributes for the line number and filename for the error */
|
|
PyErr_Fetch(&exc, &v, &tb);
|
|
PyErr_NormalizeException(&exc, &v, &tb);
|
|
/* XXX check that it is, indeed, a syntax error. It might not
|
|
* be, though. */
|
|
tmp = PyLong_FromLong(lineno);
|
|
if (tmp == NULL)
|
|
PyErr_Clear();
|
|
else {
|
|
if (PyObject_SetAttrString(v, "lineno", tmp))
|
|
PyErr_Clear();
|
|
Py_DECREF(tmp);
|
|
}
|
|
if (filename != NULL) {
|
|
tmp = PyUnicode_FromString(filename);
|
|
if (tmp == NULL)
|
|
PyErr_Clear();
|
|
else {
|
|
if (PyObject_SetAttrString(v, "filename", tmp))
|
|
PyErr_Clear();
|
|
Py_DECREF(tmp);
|
|
}
|
|
|
|
tmp = PyErr_ProgramText(filename, lineno);
|
|
if (tmp) {
|
|
if (PyObject_SetAttrString(v, "text", tmp))
|
|
PyErr_Clear();
|
|
Py_DECREF(tmp);
|
|
}
|
|
}
|
|
if (PyObject_SetAttrString(v, "offset", Py_None)) {
|
|
PyErr_Clear();
|
|
}
|
|
if (exc != PyExc_SyntaxError) {
|
|
if (!PyObject_HasAttrString(v, "msg")) {
|
|
tmp = PyObject_Str(v);
|
|
if (tmp) {
|
|
if (PyObject_SetAttrString(v, "msg", tmp))
|
|
PyErr_Clear();
|
|
Py_DECREF(tmp);
|
|
} else {
|
|
PyErr_Clear();
|
|
}
|
|
}
|
|
if (!PyObject_HasAttrString(v, "print_file_and_line")) {
|
|
if (PyObject_SetAttrString(v, "print_file_and_line",
|
|
Py_None))
|
|
PyErr_Clear();
|
|
}
|
|
}
|
|
PyErr_Restore(exc, v, tb);
|
|
}
|
|
|
|
/* Attempt to load the line of text that the exception refers to. If it
|
|
fails, it will return NULL but will not set an exception.
|
|
|
|
XXX The functionality of this function is quite similar to the
|
|
functionality in tb_displayline() in traceback.c. */
|
|
|
|
PyObject *
|
|
PyErr_ProgramText(const char *filename, int lineno)
|
|
{
|
|
FILE *fp;
|
|
int i;
|
|
char linebuf[1000];
|
|
|
|
if (filename == NULL || *filename == '\0' || lineno <= 0)
|
|
return NULL;
|
|
fp = fopen(filename, "r" PY_STDIOTEXTMODE);
|
|
if (fp == NULL)
|
|
return NULL;
|
|
for (i = 0; i < lineno; i++) {
|
|
char *pLastChar = &linebuf[sizeof(linebuf) - 2];
|
|
do {
|
|
*pLastChar = '\0';
|
|
if (Py_UniversalNewlineFgets(linebuf, sizeof linebuf,
|
|
fp, NULL) == NULL)
|
|
break;
|
|
/* fgets read *something*; if it didn't get as
|
|
far as pLastChar, it must have found a newline
|
|
or hit the end of the file; if pLastChar is \n,
|
|
it obviously found a newline; else we haven't
|
|
yet seen a newline, so must continue */
|
|
} while (*pLastChar != '\0' && *pLastChar != '\n');
|
|
}
|
|
fclose(fp);
|
|
if (i == lineno) {
|
|
char *p = linebuf;
|
|
PyObject *res;
|
|
while (*p == ' ' || *p == '\t' || *p == '\014')
|
|
p++;
|
|
res = PyUnicode_FromString(p);
|
|
if (res == NULL)
|
|
PyErr_Clear();
|
|
return res;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|