mirror of
https://github.com/python/cpython.git
synced 2025-10-19 16:03:42 +00:00
af28efd8b4
Revert GH-131993.
Fix swallowing some syntax warnings in different modules if they accidentally
have the same message and are emitted from the same line.
Fix duplicated warnings in the "finally" block.
(cherry picked from commit 279db6bede)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
* Update 2025-10-06-10-03-37.gh-issue-139640.gY5oTb.rst
---------
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
2061 lines
56 KiB
C
2061 lines
56 KiB
C
|
|
/* Error handling */
|
|
|
|
#include "Python.h"
|
|
#include "pycore_audit.h" // _PySys_Audit()
|
|
#include "pycore_call.h" // _PyObject_CallNoArgs()
|
|
#include "pycore_fileutils.h" // _PyFile_Flush
|
|
#include "pycore_initconfig.h" // _PyStatus_ERR()
|
|
#include "pycore_pyerrors.h" // _PyErr_Format()
|
|
#include "pycore_pystate.h" // _PyThreadState_GET()
|
|
#include "pycore_runtime.h" // _Py_ID()
|
|
#include "pycore_structseq.h" // _PyStructSequence_FiniBuiltin()
|
|
#include "pycore_sysmodule.h" // _PySys_GetOptionalAttr()
|
|
#include "pycore_traceback.h" // _PyTraceBack_FromFrame()
|
|
#include "pycore_unicodeobject.h" // _PyUnicode_Equal()
|
|
|
|
#ifdef MS_WINDOWS
|
|
# include <windows.h>
|
|
# include <winbase.h>
|
|
# include <stdlib.h> // _sys_nerr
|
|
#endif
|
|
|
|
|
|
void
|
|
_PyErr_SetRaisedException(PyThreadState *tstate, PyObject *exc)
|
|
{
|
|
PyObject *old_exc = tstate->current_exception;
|
|
tstate->current_exception = exc;
|
|
Py_XDECREF(old_exc);
|
|
}
|
|
|
|
static PyObject*
|
|
_PyErr_CreateException(PyObject *exception_type, PyObject *value)
|
|
{
|
|
PyObject *exc;
|
|
|
|
if (value == NULL || value == Py_None) {
|
|
exc = _PyObject_CallNoArgs(exception_type);
|
|
}
|
|
else if (PyTuple_Check(value)) {
|
|
exc = PyObject_Call(exception_type, value, NULL);
|
|
}
|
|
else {
|
|
exc = PyObject_CallOneArg(exception_type, value);
|
|
}
|
|
|
|
if (exc != NULL && !PyExceptionInstance_Check(exc)) {
|
|
PyErr_Format(PyExc_TypeError,
|
|
"calling %R should have returned an instance of "
|
|
"BaseException, not %s",
|
|
exception_type, Py_TYPE(exc)->tp_name);
|
|
Py_CLEAR(exc);
|
|
}
|
|
|
|
return exc;
|
|
}
|
|
|
|
void
|
|
_PyErr_Restore(PyThreadState *tstate, PyObject *type, PyObject *value,
|
|
PyObject *traceback)
|
|
{
|
|
if (type == NULL) {
|
|
assert(value == NULL);
|
|
assert(traceback == NULL);
|
|
_PyErr_SetRaisedException(tstate, NULL);
|
|
return;
|
|
}
|
|
assert(PyExceptionClass_Check(type));
|
|
if (value != NULL && type == (PyObject *)Py_TYPE(value)) {
|
|
/* Already normalized */
|
|
#ifdef Py_DEBUG
|
|
PyObject *tb = PyException_GetTraceback(value);
|
|
assert(tb != Py_None);
|
|
Py_XDECREF(tb);
|
|
#endif
|
|
}
|
|
else {
|
|
PyObject *exc = _PyErr_CreateException(type, value);
|
|
Py_XDECREF(value);
|
|
if (exc == NULL) {
|
|
Py_DECREF(type);
|
|
Py_XDECREF(traceback);
|
|
return;
|
|
}
|
|
value = exc;
|
|
}
|
|
assert(PyExceptionInstance_Check(value));
|
|
if (traceback != NULL) {
|
|
if (PyException_SetTraceback(value, traceback) < 0) {
|
|
Py_DECREF(traceback);
|
|
Py_DECREF(value);
|
|
Py_DECREF(type);
|
|
return;
|
|
}
|
|
Py_DECREF(traceback);
|
|
}
|
|
_PyErr_SetRaisedException(tstate, value);
|
|
Py_DECREF(type);
|
|
}
|
|
|
|
void
|
|
PyErr_Restore(PyObject *type, PyObject *value, PyObject *traceback)
|
|
{
|
|
PyThreadState *tstate = _PyThreadState_GET();
|
|
_PyErr_Restore(tstate, type, value, traceback);
|
|
}
|
|
|
|
void
|
|
PyErr_SetRaisedException(PyObject *exc)
|
|
{
|
|
PyThreadState *tstate = _PyThreadState_GET();
|
|
_PyErr_SetRaisedException(tstate, exc);
|
|
}
|
|
|
|
_PyErr_StackItem *
|
|
_PyErr_GetTopmostException(PyThreadState *tstate)
|
|
{
|
|
_PyErr_StackItem *exc_info = tstate->exc_info;
|
|
assert(exc_info);
|
|
|
|
while (exc_info->exc_value == NULL && exc_info->previous_item != NULL)
|
|
{
|
|
exc_info = exc_info->previous_item;
|
|
}
|
|
assert(!Py_IsNone(exc_info->exc_value));
|
|
return exc_info;
|
|
}
|
|
|
|
static PyObject *
|
|
get_normalization_failure_note(PyThreadState *tstate, PyObject *exception, PyObject *value)
|
|
{
|
|
PyObject *args = PyObject_Repr(value);
|
|
if (args == NULL) {
|
|
_PyErr_Clear(tstate);
|
|
args = PyUnicode_FromFormat("<unknown>");
|
|
}
|
|
PyObject *note;
|
|
const char *tpname = ((PyTypeObject*)exception)->tp_name;
|
|
if (args == NULL) {
|
|
_PyErr_Clear(tstate);
|
|
note = PyUnicode_FromFormat("Normalization failed: type=%s", tpname);
|
|
}
|
|
else {
|
|
note = PyUnicode_FromFormat("Normalization failed: type=%s args=%S",
|
|
tpname, args);
|
|
Py_DECREF(args);
|
|
}
|
|
return note;
|
|
}
|
|
|
|
void
|
|
_PyErr_SetObject(PyThreadState *tstate, PyObject *exception, PyObject *value)
|
|
{
|
|
PyObject *exc_value;
|
|
PyObject *tb = NULL;
|
|
|
|
if (exception != NULL &&
|
|
!PyExceptionClass_Check(exception)) {
|
|
_PyErr_Format(tstate, PyExc_SystemError,
|
|
"_PyErr_SetObject: "
|
|
"exception %R is not a BaseException subclass",
|
|
exception);
|
|
return;
|
|
}
|
|
/* Normalize the exception */
|
|
int is_subclass = 0;
|
|
if (value != NULL && PyExceptionInstance_Check(value)) {
|
|
is_subclass = PyObject_IsSubclass((PyObject *)Py_TYPE(value), exception);
|
|
if (is_subclass < 0) {
|
|
return;
|
|
}
|
|
}
|
|
Py_XINCREF(value);
|
|
if (!is_subclass) {
|
|
/* We must normalize the value right now */
|
|
|
|
/* Issue #23571: functions must not be called with an
|
|
exception set */
|
|
_PyErr_Clear(tstate);
|
|
|
|
PyObject *fixed_value = _PyErr_CreateException(exception, value);
|
|
if (fixed_value == NULL) {
|
|
PyObject *exc = _PyErr_GetRaisedException(tstate);
|
|
assert(PyExceptionInstance_Check(exc));
|
|
|
|
PyObject *note = get_normalization_failure_note(tstate, exception, value);
|
|
Py_XDECREF(value);
|
|
if (note != NULL) {
|
|
/* ignore errors in _PyException_AddNote - they will be overwritten below */
|
|
_PyException_AddNote(exc, note);
|
|
Py_DECREF(note);
|
|
}
|
|
_PyErr_SetRaisedException(tstate, exc);
|
|
return;
|
|
}
|
|
Py_XSETREF(value, fixed_value);
|
|
}
|
|
|
|
exc_value = _PyErr_GetTopmostException(tstate)->exc_value;
|
|
if (exc_value != NULL && exc_value != Py_None) {
|
|
/* Implicit exception chaining */
|
|
Py_INCREF(exc_value);
|
|
/* Avoid creating new reference cycles through the
|
|
context chain, while taking care not to hang on
|
|
pre-existing ones.
|
|
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;
|
|
PyObject *slow_o = o; /* Floyd's cycle detection algo */
|
|
int slow_update_toggle = 0;
|
|
while ((context = PyException_GetContext(o))) {
|
|
Py_DECREF(context);
|
|
if (context == value) {
|
|
PyException_SetContext(o, NULL);
|
|
break;
|
|
}
|
|
o = context;
|
|
if (o == slow_o) {
|
|
/* pre-existing cycle - all exceptions on the
|
|
path were visited and checked. */
|
|
break;
|
|
}
|
|
if (slow_update_toggle) {
|
|
slow_o = PyException_GetContext(slow_o);
|
|
Py_DECREF(slow_o);
|
|
}
|
|
slow_update_toggle = !slow_update_toggle;
|
|
}
|
|
PyException_SetContext(value, exc_value);
|
|
}
|
|
else {
|
|
Py_DECREF(exc_value);
|
|
}
|
|
}
|
|
assert(value != NULL);
|
|
if (PyExceptionInstance_Check(value))
|
|
tb = PyException_GetTraceback(value);
|
|
_PyErr_Restore(tstate, Py_NewRef(Py_TYPE(value)), value, tb);
|
|
}
|
|
|
|
void
|
|
PyErr_SetObject(PyObject *exception, PyObject *value)
|
|
{
|
|
PyThreadState *tstate = _PyThreadState_GET();
|
|
_PyErr_SetObject(tstate, exception, value);
|
|
}
|
|
|
|
/* Set a key error with the specified argument, wrapping it in a
|
|
* tuple automatically so that tuple keys are not unpacked as the
|
|
* exception arguments. */
|
|
void
|
|
_PyErr_SetKeyError(PyObject *arg)
|
|
{
|
|
PyThreadState *tstate = _PyThreadState_GET();
|
|
PyObject *exc = PyObject_CallOneArg(PyExc_KeyError, arg);
|
|
if (!exc) {
|
|
/* caller will expect error to be set anyway */
|
|
return;
|
|
}
|
|
|
|
_PyErr_SetObject(tstate, (PyObject*)Py_TYPE(exc), exc);
|
|
Py_DECREF(exc);
|
|
}
|
|
|
|
void
|
|
_PyErr_SetNone(PyThreadState *tstate, PyObject *exception)
|
|
{
|
|
_PyErr_SetObject(tstate, exception, (PyObject *)NULL);
|
|
}
|
|
|
|
|
|
void
|
|
PyErr_SetNone(PyObject *exception)
|
|
{
|
|
PyThreadState *tstate = _PyThreadState_GET();
|
|
_PyErr_SetNone(tstate, exception);
|
|
}
|
|
|
|
|
|
void
|
|
_PyErr_SetString(PyThreadState *tstate, PyObject *exception,
|
|
const char *string)
|
|
{
|
|
PyObject *value = PyUnicode_FromString(string);
|
|
if (value != NULL) {
|
|
_PyErr_SetObject(tstate, exception, value);
|
|
Py_DECREF(value);
|
|
}
|
|
}
|
|
|
|
void
|
|
PyErr_SetString(PyObject *exception, const char *string)
|
|
{
|
|
PyThreadState *tstate = _PyThreadState_GET();
|
|
_PyErr_SetString(tstate, exception, string);
|
|
}
|
|
|
|
void
|
|
_PyErr_SetLocaleString(PyObject *exception, const char *string)
|
|
{
|
|
PyObject *value = PyUnicode_DecodeLocale(string, "surrogateescape");
|
|
if (value != NULL) {
|
|
PyErr_SetObject(exception, value);
|
|
Py_DECREF(value);
|
|
}
|
|
}
|
|
|
|
PyObject* _Py_HOT_FUNCTION
|
|
PyErr_Occurred(void)
|
|
{
|
|
/* The caller must hold a thread state. */
|
|
_Py_AssertHoldsTstate();
|
|
|
|
PyThreadState *tstate = _PyThreadState_GET();
|
|
return _PyErr_Occurred(tstate);
|
|
}
|
|
|
|
|
|
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)) {
|
|
return PyType_IsSubtype((PyTypeObject *)err, (PyTypeObject *)exc);
|
|
}
|
|
|
|
return err == exc;
|
|
}
|
|
|
|
|
|
int
|
|
_PyErr_ExceptionMatches(PyThreadState *tstate, PyObject *exc)
|
|
{
|
|
return PyErr_GivenExceptionMatches(_PyErr_Occurred(tstate), exc);
|
|
}
|
|
|
|
|
|
int
|
|
PyErr_ExceptionMatches(PyObject *exc)
|
|
{
|
|
PyThreadState *tstate = _PyThreadState_GET();
|
|
return _PyErr_ExceptionMatches(tstate, exc);
|
|
}
|
|
|
|
|
|
#ifndef Py_NORMALIZE_RECURSION_LIMIT
|
|
#define Py_NORMALIZE_RECURSION_LIMIT 32
|
|
#endif
|
|
|
|
/* 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(PyThreadState *tstate, PyObject **exc,
|
|
PyObject **val, PyObject **tb)
|
|
{
|
|
int recursion_depth = 0;
|
|
tstate->recursion_headroom++;
|
|
PyObject *type, *value, *initial_tb;
|
|
|
|
restart:
|
|
type = *exc;
|
|
if (type == NULL) {
|
|
/* There was no exception, so nothing to do. */
|
|
tstate->recursion_headroom--;
|
|
return;
|
|
}
|
|
|
|
value = *val;
|
|
/* If PyErr_SetNone() was used, the value will have been actually
|
|
set to NULL.
|
|
*/
|
|
if (!value) {
|
|
value = Py_NewRef(Py_None);
|
|
}
|
|
|
|
/* Normalize the exception so that if the type is a class, the
|
|
value will be an instance.
|
|
*/
|
|
if (PyExceptionClass_Check(type)) {
|
|
PyObject *inclass = NULL;
|
|
int is_subclass = 0;
|
|
|
|
if (PyExceptionInstance_Check(value)) {
|
|
inclass = PyExceptionInstance_Class(value);
|
|
is_subclass = PyObject_IsSubclass(inclass, type);
|
|
if (is_subclass < 0) {
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
/* 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 (!is_subclass) {
|
|
PyObject *fixed_value = _PyErr_CreateException(type, value);
|
|
if (fixed_value == NULL) {
|
|
goto error;
|
|
}
|
|
Py_SETREF(value, fixed_value);
|
|
}
|
|
/* If the class of the instance doesn't exactly match the
|
|
class of the type, believe the instance.
|
|
*/
|
|
else if (inclass != type) {
|
|
Py_SETREF(type, Py_NewRef(inclass));
|
|
}
|
|
}
|
|
*exc = type;
|
|
*val = value;
|
|
tstate->recursion_headroom--;
|
|
return;
|
|
|
|
error:
|
|
Py_DECREF(type);
|
|
Py_DECREF(value);
|
|
recursion_depth++;
|
|
if (recursion_depth == Py_NORMALIZE_RECURSION_LIMIT) {
|
|
_PyErr_SetString(tstate, PyExc_RecursionError,
|
|
"maximum recursion depth exceeded "
|
|
"while normalizing an exception");
|
|
}
|
|
/* 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(tstate, exc, val, tb);
|
|
assert(*exc != NULL);
|
|
if (initial_tb != NULL) {
|
|
if (*tb == NULL)
|
|
*tb = initial_tb;
|
|
else
|
|
Py_DECREF(initial_tb);
|
|
}
|
|
/* Abort when Py_NORMALIZE_RECURSION_LIMIT has been exceeded, and the
|
|
corresponding RecursionError could not be normalized, and the
|
|
MemoryError raised when normalize this RecursionError could not be
|
|
normalized. */
|
|
if (recursion_depth >= Py_NORMALIZE_RECURSION_LIMIT + 2) {
|
|
if (PyErr_GivenExceptionMatches(*exc, PyExc_MemoryError)) {
|
|
Py_FatalError("Cannot recover from MemoryErrors "
|
|
"while normalizing exceptions.");
|
|
}
|
|
else {
|
|
Py_FatalError("Cannot recover from the recursive normalization "
|
|
"of an exception.");
|
|
}
|
|
}
|
|
goto restart;
|
|
}
|
|
|
|
|
|
void
|
|
PyErr_NormalizeException(PyObject **exc, PyObject **val, PyObject **tb)
|
|
{
|
|
PyThreadState *tstate = _PyThreadState_GET();
|
|
_PyErr_NormalizeException(tstate, exc, val, tb);
|
|
}
|
|
|
|
|
|
PyObject *
|
|
_PyErr_GetRaisedException(PyThreadState *tstate) {
|
|
PyObject *exc = tstate->current_exception;
|
|
tstate->current_exception = NULL;
|
|
return exc;
|
|
}
|
|
|
|
PyObject *
|
|
PyErr_GetRaisedException(void)
|
|
{
|
|
PyThreadState *tstate = _PyThreadState_GET();
|
|
return _PyErr_GetRaisedException(tstate);
|
|
}
|
|
|
|
void
|
|
_PyErr_Fetch(PyThreadState *tstate, PyObject **p_type, PyObject **p_value,
|
|
PyObject **p_traceback)
|
|
{
|
|
PyObject *exc = _PyErr_GetRaisedException(tstate);
|
|
*p_value = exc;
|
|
if (exc == NULL) {
|
|
*p_type = NULL;
|
|
*p_traceback = NULL;
|
|
}
|
|
else {
|
|
*p_type = Py_NewRef(Py_TYPE(exc));
|
|
*p_traceback = PyException_GetTraceback(exc);
|
|
}
|
|
}
|
|
|
|
|
|
void
|
|
PyErr_Fetch(PyObject **p_type, PyObject **p_value, PyObject **p_traceback)
|
|
{
|
|
PyThreadState *tstate = _PyThreadState_GET();
|
|
_PyErr_Fetch(tstate, p_type, p_value, p_traceback);
|
|
}
|
|
|
|
|
|
void
|
|
_PyErr_Clear(PyThreadState *tstate)
|
|
{
|
|
_PyErr_Restore(tstate, NULL, NULL, NULL);
|
|
}
|
|
|
|
|
|
void
|
|
PyErr_Clear(void)
|
|
{
|
|
PyThreadState *tstate = _PyThreadState_GET();
|
|
_PyErr_Clear(tstate);
|
|
}
|
|
|
|
static PyObject*
|
|
get_exc_type(PyObject *exc_value) /* returns a strong ref */
|
|
{
|
|
if (exc_value == NULL || exc_value == Py_None) {
|
|
return Py_None;
|
|
}
|
|
else {
|
|
assert(PyExceptionInstance_Check(exc_value));
|
|
PyObject *type = PyExceptionInstance_Class(exc_value);
|
|
assert(type != NULL);
|
|
return Py_NewRef(type);
|
|
}
|
|
}
|
|
|
|
static PyObject*
|
|
get_exc_traceback(PyObject *exc_value) /* returns a strong ref */
|
|
{
|
|
if (exc_value == NULL || exc_value == Py_None) {
|
|
return Py_None;
|
|
}
|
|
else {
|
|
assert(PyExceptionInstance_Check(exc_value));
|
|
PyObject *tb = PyException_GetTraceback(exc_value);
|
|
return tb ? tb : Py_None;
|
|
}
|
|
}
|
|
|
|
void
|
|
_PyErr_GetExcInfo(PyThreadState *tstate,
|
|
PyObject **p_type, PyObject **p_value, PyObject **p_traceback)
|
|
{
|
|
_PyErr_StackItem *exc_info = _PyErr_GetTopmostException(tstate);
|
|
|
|
*p_type = get_exc_type(exc_info->exc_value);
|
|
*p_value = Py_XNewRef(exc_info->exc_value);
|
|
*p_traceback = get_exc_traceback(exc_info->exc_value);
|
|
}
|
|
|
|
PyObject*
|
|
_PyErr_GetHandledException(PyThreadState *tstate)
|
|
{
|
|
_PyErr_StackItem *exc_info = _PyErr_GetTopmostException(tstate);
|
|
PyObject *exc = exc_info->exc_value;
|
|
if (exc == NULL || exc == Py_None) {
|
|
return NULL;
|
|
}
|
|
return Py_NewRef(exc);
|
|
}
|
|
|
|
PyObject*
|
|
PyErr_GetHandledException(void)
|
|
{
|
|
PyThreadState *tstate = _PyThreadState_GET();
|
|
return _PyErr_GetHandledException(tstate);
|
|
}
|
|
|
|
void
|
|
_PyErr_SetHandledException(PyThreadState *tstate, PyObject *exc)
|
|
{
|
|
Py_XSETREF(tstate->exc_info->exc_value, Py_XNewRef(exc == Py_None ? NULL : exc));
|
|
}
|
|
|
|
void
|
|
PyErr_SetHandledException(PyObject *exc)
|
|
{
|
|
PyThreadState *tstate = _PyThreadState_GET();
|
|
_PyErr_SetHandledException(tstate, exc);
|
|
}
|
|
|
|
void
|
|
PyErr_GetExcInfo(PyObject **p_type, PyObject **p_value, PyObject **p_traceback)
|
|
{
|
|
PyThreadState *tstate = _PyThreadState_GET();
|
|
_PyErr_GetExcInfo(tstate, p_type, p_value, p_traceback);
|
|
}
|
|
|
|
void
|
|
PyErr_SetExcInfo(PyObject *type, PyObject *value, PyObject *traceback)
|
|
{
|
|
PyErr_SetHandledException(value);
|
|
Py_XDECREF(value);
|
|
/* These args are no longer used, but we still need to steal a ref */
|
|
Py_XDECREF(type);
|
|
Py_XDECREF(traceback);
|
|
}
|
|
|
|
|
|
PyObject*
|
|
_PyErr_StackItemToExcInfoTuple(_PyErr_StackItem *err_info)
|
|
{
|
|
PyObject *exc_value = err_info->exc_value;
|
|
|
|
assert(exc_value == NULL ||
|
|
exc_value == Py_None ||
|
|
PyExceptionInstance_Check(exc_value));
|
|
|
|
PyObject *ret = PyTuple_New(3);
|
|
if (ret == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
PyObject *exc_type = get_exc_type(exc_value);
|
|
PyObject *exc_traceback = get_exc_traceback(exc_value);
|
|
|
|
PyTuple_SET_ITEM(ret, 0, exc_type ? exc_type : Py_None);
|
|
PyTuple_SET_ITEM(ret, 1, exc_value ? Py_NewRef(exc_value) : Py_None);
|
|
PyTuple_SET_ITEM(ret, 2, exc_traceback ? exc_traceback : Py_None);
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
/* Like PyErr_Restore(), but if an exception is already set,
|
|
set the context associated with it.
|
|
|
|
The caller is responsible for ensuring that this call won't create
|
|
any cycles in the exception context chain. */
|
|
void
|
|
_PyErr_ChainExceptions(PyObject *typ, PyObject *val, PyObject *tb)
|
|
{
|
|
if (typ == NULL)
|
|
return;
|
|
|
|
PyThreadState *tstate = _PyThreadState_GET();
|
|
|
|
if (!PyExceptionClass_Check(typ)) {
|
|
_PyErr_Format(tstate, PyExc_SystemError,
|
|
"_PyErr_ChainExceptions: "
|
|
"exception %R is not a BaseException subclass",
|
|
typ);
|
|
return;
|
|
}
|
|
|
|
if (_PyErr_Occurred(tstate)) {
|
|
_PyErr_NormalizeException(tstate, &typ, &val, &tb);
|
|
if (tb != NULL) {
|
|
PyException_SetTraceback(val, tb);
|
|
Py_DECREF(tb);
|
|
}
|
|
Py_DECREF(typ);
|
|
PyObject *exc2 = _PyErr_GetRaisedException(tstate);
|
|
PyException_SetContext(exc2, val);
|
|
_PyErr_SetRaisedException(tstate, exc2);
|
|
}
|
|
else {
|
|
_PyErr_Restore(tstate, typ, val, tb);
|
|
}
|
|
}
|
|
|
|
/* Like PyErr_SetRaisedException(), but if an exception is already set,
|
|
set the context associated with it.
|
|
|
|
The caller is responsible for ensuring that this call won't create
|
|
any cycles in the exception context chain. */
|
|
void
|
|
_PyErr_ChainExceptions1Tstate(PyThreadState *tstate, PyObject *exc)
|
|
{
|
|
if (exc == NULL) {
|
|
return;
|
|
}
|
|
if (_PyErr_Occurred(tstate)) {
|
|
PyObject *exc2 = _PyErr_GetRaisedException(tstate);
|
|
PyException_SetContext(exc2, exc);
|
|
_PyErr_SetRaisedException(tstate, exc2);
|
|
}
|
|
else {
|
|
_PyErr_SetRaisedException(tstate, exc);
|
|
}
|
|
}
|
|
|
|
void
|
|
_PyErr_ChainExceptions1(PyObject *exc)
|
|
{
|
|
PyThreadState *tstate = _PyThreadState_GET();
|
|
_PyErr_ChainExceptions1Tstate(tstate, exc);
|
|
}
|
|
|
|
/* If the current thread is handling an exception (exc_info is ), set this
|
|
exception as the context of the current raised exception.
|
|
|
|
This function can only be called when _PyErr_Occurred() is true.
|
|
Also, this function won't create any cycles in the exception context
|
|
chain to the extent that _PyErr_SetObject ensures this. */
|
|
void
|
|
_PyErr_ChainStackItem(void)
|
|
{
|
|
PyThreadState *tstate = _PyThreadState_GET();
|
|
assert(_PyErr_Occurred(tstate));
|
|
|
|
_PyErr_StackItem *exc_info = tstate->exc_info;
|
|
if (exc_info->exc_value == NULL || exc_info->exc_value == Py_None) {
|
|
return;
|
|
}
|
|
|
|
PyObject *exc = _PyErr_GetRaisedException(tstate);
|
|
|
|
/* _PyErr_SetObject sets the context from PyThreadState. */
|
|
_PyErr_SetObject(tstate, (PyObject *) Py_TYPE(exc), exc);
|
|
Py_DECREF(exc); // since _PyErr_Occurred was true
|
|
}
|
|
|
|
static PyObject *
|
|
_PyErr_FormatVFromCause(PyThreadState *tstate, PyObject *exception,
|
|
const char *format, va_list vargs)
|
|
{
|
|
assert(_PyErr_Occurred(tstate));
|
|
PyObject *exc = _PyErr_GetRaisedException(tstate);
|
|
assert(!_PyErr_Occurred(tstate));
|
|
_PyErr_FormatV(tstate, exception, format, vargs);
|
|
PyObject *exc2 = _PyErr_GetRaisedException(tstate);
|
|
PyException_SetCause(exc2, Py_NewRef(exc));
|
|
PyException_SetContext(exc2, Py_NewRef(exc));
|
|
Py_DECREF(exc);
|
|
_PyErr_SetRaisedException(tstate, exc2);
|
|
return NULL;
|
|
}
|
|
|
|
PyObject *
|
|
_PyErr_FormatFromCauseTstate(PyThreadState *tstate, PyObject *exception,
|
|
const char *format, ...)
|
|
{
|
|
va_list vargs;
|
|
va_start(vargs, format);
|
|
_PyErr_FormatVFromCause(tstate, exception, format, vargs);
|
|
va_end(vargs);
|
|
return NULL;
|
|
}
|
|
|
|
PyObject *
|
|
_PyErr_FormatFromCause(PyObject *exception, const char *format, ...)
|
|
{
|
|
PyThreadState *tstate = _PyThreadState_GET();
|
|
va_list vargs;
|
|
va_start(vargs, format);
|
|
_PyErr_FormatVFromCause(tstate, exception, format, vargs);
|
|
va_end(vargs);
|
|
return NULL;
|
|
}
|
|
|
|
/* Convenience functions to set a type error exception and return 0 */
|
|
|
|
int
|
|
PyErr_BadArgument(void)
|
|
{
|
|
PyThreadState *tstate = _PyThreadState_GET();
|
|
_PyErr_SetString(tstate, PyExc_TypeError,
|
|
"bad argument type for built-in operation");
|
|
return 0;
|
|
}
|
|
|
|
PyObject *
|
|
PyErr_NoMemory(void)
|
|
{
|
|
PyThreadState *tstate = _PyThreadState_GET();
|
|
return _PyErr_NoMemory(tstate);
|
|
}
|
|
|
|
PyObject *
|
|
PyErr_SetFromErrnoWithFilenameObject(PyObject *exc, PyObject *filenameObject)
|
|
{
|
|
return PyErr_SetFromErrnoWithFilenameObjects(exc, filenameObject, NULL);
|
|
}
|
|
|
|
PyObject *
|
|
PyErr_SetFromErrnoWithFilenameObjects(PyObject *exc, PyObject *filenameObject, PyObject *filenameObject2)
|
|
{
|
|
PyThreadState *tstate = _PyThreadState_GET();
|
|
PyObject *message;
|
|
PyObject *v, *args;
|
|
int i = errno;
|
|
#ifdef MS_WINDOWS
|
|
WCHAR *s_buf = NULL;
|
|
#endif /* Unix/Windows */
|
|
|
|
#ifdef EINTR
|
|
if (i == EINTR && PyErr_CheckSignals())
|
|
return NULL;
|
|
#endif
|
|
|
|
#ifndef MS_WINDOWS
|
|
if (i != 0) {
|
|
const char *s = strerror(i);
|
|
message = PyUnicode_DecodeLocale(s, "surrogateescape");
|
|
}
|
|
else {
|
|
/* Sometimes errno didn't get set */
|
|
message = PyUnicode_FromString("Error");
|
|
}
|
|
#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_FromWideChar(s_buf, len);
|
|
}
|
|
}
|
|
}
|
|
#endif /* Unix/Windows */
|
|
|
|
if (message == NULL)
|
|
{
|
|
#ifdef MS_WINDOWS
|
|
LocalFree(s_buf);
|
|
#endif
|
|
return NULL;
|
|
}
|
|
|
|
if (filenameObject != NULL) {
|
|
if (filenameObject2 != NULL)
|
|
args = Py_BuildValue("(iOOiO)", i, message, filenameObject, 0, filenameObject2);
|
|
else
|
|
args = Py_BuildValue("(iOO)", i, message, filenameObject);
|
|
} else {
|
|
assert(filenameObject2 == NULL);
|
|
args = Py_BuildValue("(iO)", i, message);
|
|
}
|
|
Py_DECREF(message);
|
|
|
|
if (args != NULL) {
|
|
v = PyObject_Call(exc, args, NULL);
|
|
Py_DECREF(args);
|
|
if (v != NULL) {
|
|
_PyErr_SetObject(tstate, (PyObject *) Py_TYPE(v), v);
|
|
Py_DECREF(v);
|
|
}
|
|
}
|
|
#ifdef MS_WINDOWS
|
|
LocalFree(s_buf);
|
|
#endif
|
|
return NULL;
|
|
}
|
|
|
|
PyObject *
|
|
PyErr_SetFromErrnoWithFilename(PyObject *exc, const char *filename)
|
|
{
|
|
PyObject *name = NULL;
|
|
if (filename) {
|
|
int i = errno;
|
|
name = PyUnicode_DecodeFSDefault(filename);
|
|
if (name == NULL) {
|
|
return NULL;
|
|
}
|
|
errno = i;
|
|
}
|
|
PyObject *result = PyErr_SetFromErrnoWithFilenameObjects(exc, name, NULL);
|
|
Py_XDECREF(name);
|
|
return result;
|
|
}
|
|
|
|
PyObject *
|
|
PyErr_SetFromErrno(PyObject *exc)
|
|
{
|
|
return PyErr_SetFromErrnoWithFilenameObjects(exc, NULL, NULL);
|
|
}
|
|
|
|
#ifdef MS_WINDOWS
|
|
/* Windows specific error code handling */
|
|
PyObject *PyErr_SetExcFromWindowsErrWithFilenameObject(
|
|
PyObject *exc,
|
|
int ierr,
|
|
PyObject *filenameObject)
|
|
{
|
|
return PyErr_SetExcFromWindowsErrWithFilenameObjects(exc, ierr,
|
|
filenameObject, NULL);
|
|
}
|
|
|
|
PyObject *PyErr_SetExcFromWindowsErrWithFilenameObjects(
|
|
PyObject *exc,
|
|
int ierr,
|
|
PyObject *filenameObject,
|
|
PyObject *filenameObject2)
|
|
{
|
|
PyThreadState *tstate = _PyThreadState_GET();
|
|
int len;
|
|
WCHAR *s_buf = NULL; /* Free via LocalFree */
|
|
PyObject *message;
|
|
PyObject *args, *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_FromWideChar(s_buf, len);
|
|
}
|
|
|
|
if (message == NULL)
|
|
{
|
|
LocalFree(s_buf);
|
|
return NULL;
|
|
}
|
|
|
|
if (filenameObject == NULL) {
|
|
assert(filenameObject2 == NULL);
|
|
filenameObject = filenameObject2 = Py_None;
|
|
}
|
|
else if (filenameObject2 == NULL)
|
|
filenameObject2 = Py_None;
|
|
/* This is the constructor signature for OSError.
|
|
The POSIX translation will be figured out by the constructor. */
|
|
args = Py_BuildValue("(iOOiO)", 0, message, filenameObject, err, filenameObject2);
|
|
Py_DECREF(message);
|
|
|
|
if (args != NULL) {
|
|
v = PyObject_Call(exc, args, NULL);
|
|
Py_DECREF(args);
|
|
if (v != NULL) {
|
|
_PyErr_SetObject(tstate, (PyObject *) Py_TYPE(v), v);
|
|
Py_DECREF(v);
|
|
}
|
|
}
|
|
LocalFree(s_buf);
|
|
return NULL;
|
|
}
|
|
|
|
PyObject *PyErr_SetExcFromWindowsErrWithFilename(
|
|
PyObject *exc,
|
|
int ierr,
|
|
const char *filename)
|
|
{
|
|
PyObject *name = NULL;
|
|
if (filename) {
|
|
if ((DWORD)ierr == 0) {
|
|
ierr = (int)GetLastError();
|
|
}
|
|
name = PyUnicode_DecodeFSDefault(filename);
|
|
if (name == NULL) {
|
|
return NULL;
|
|
}
|
|
}
|
|
PyObject *ret = PyErr_SetExcFromWindowsErrWithFilenameObjects(exc,
|
|
ierr,
|
|
name,
|
|
NULL);
|
|
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_OSError,
|
|
ierr, NULL);
|
|
}
|
|
|
|
PyObject *PyErr_SetFromWindowsErrWithFilename(
|
|
int ierr,
|
|
const char *filename)
|
|
{
|
|
PyObject *name = NULL;
|
|
if (filename) {
|
|
if ((DWORD)ierr == 0) {
|
|
ierr = (int)GetLastError();
|
|
}
|
|
name = PyUnicode_DecodeFSDefault(filename);
|
|
if (name == NULL) {
|
|
return NULL;
|
|
}
|
|
}
|
|
PyObject *result = PyErr_SetExcFromWindowsErrWithFilenameObjects(
|
|
PyExc_OSError,
|
|
ierr, name, NULL);
|
|
Py_XDECREF(name);
|
|
return result;
|
|
}
|
|
|
|
#endif /* MS_WINDOWS */
|
|
|
|
static PyObject *
|
|
new_importerror(
|
|
PyThreadState *tstate, PyObject *exctype, PyObject *msg,
|
|
PyObject *name, PyObject *path, PyObject* from_name)
|
|
{
|
|
PyObject *exc = NULL;
|
|
PyObject *kwargs = NULL;
|
|
|
|
int issubclass = PyObject_IsSubclass(exctype, PyExc_ImportError);
|
|
if (issubclass < 0) {
|
|
return NULL;
|
|
}
|
|
else if (!issubclass) {
|
|
_PyErr_SetString(tstate, PyExc_TypeError,
|
|
"expected a subclass of ImportError");
|
|
return NULL;
|
|
}
|
|
|
|
if (msg == NULL) {
|
|
_PyErr_SetString(tstate, PyExc_TypeError,
|
|
"expected a message argument");
|
|
return NULL;
|
|
}
|
|
|
|
if (name == NULL) {
|
|
name = Py_None;
|
|
}
|
|
if (path == NULL) {
|
|
path = Py_None;
|
|
}
|
|
if (from_name == NULL) {
|
|
from_name = Py_None;
|
|
}
|
|
|
|
kwargs = PyDict_New();
|
|
if (kwargs == NULL) {
|
|
return NULL;
|
|
}
|
|
if (PyDict_SetItemString(kwargs, "name", name) < 0) {
|
|
goto finally;
|
|
}
|
|
if (PyDict_SetItemString(kwargs, "path", path) < 0) {
|
|
goto finally;
|
|
}
|
|
if (PyDict_SetItemString(kwargs, "name_from", from_name) < 0) {
|
|
goto finally;
|
|
}
|
|
exc = PyObject_VectorcallDict(exctype, &msg, 1, kwargs);
|
|
|
|
finally:
|
|
Py_DECREF(kwargs);
|
|
return exc;
|
|
}
|
|
|
|
static PyObject *
|
|
_PyErr_SetImportErrorSubclassWithNameFrom(
|
|
PyObject *exception, PyObject *msg,
|
|
PyObject *name, PyObject *path, PyObject* from_name)
|
|
{
|
|
PyThreadState *tstate = _PyThreadState_GET();
|
|
PyObject *error = new_importerror(
|
|
tstate, exception, msg, name, path, from_name);
|
|
if (error != NULL) {
|
|
_PyErr_SetObject(tstate, (PyObject *)Py_TYPE(error), error);
|
|
Py_DECREF(error);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
|
|
PyObject *
|
|
PyErr_SetImportErrorSubclass(PyObject *exception, PyObject *msg,
|
|
PyObject *name, PyObject *path)
|
|
{
|
|
return _PyErr_SetImportErrorSubclassWithNameFrom(exception, msg, name, path, NULL);
|
|
}
|
|
|
|
PyObject *
|
|
_PyErr_SetImportErrorWithNameFrom(PyObject *msg, PyObject *name, PyObject *path, PyObject* from_name)
|
|
{
|
|
return _PyErr_SetImportErrorSubclassWithNameFrom(PyExc_ImportError, msg, name, path, from_name);
|
|
}
|
|
|
|
PyObject *
|
|
PyErr_SetImportError(PyObject *msg, PyObject *name, PyObject *path)
|
|
{
|
|
return PyErr_SetImportErrorSubclass(PyExc_ImportError, msg, name, path);
|
|
}
|
|
|
|
int
|
|
_PyErr_SetModuleNotFoundError(PyObject *name)
|
|
{
|
|
PyThreadState *tstate = _PyThreadState_GET();
|
|
if (name == NULL) {
|
|
_PyErr_SetString(tstate, PyExc_TypeError, "expected a name argument");
|
|
return -1;
|
|
}
|
|
PyObject *msg = PyUnicode_FromFormat("%S module not found", name);
|
|
if (msg == NULL) {
|
|
return -1;
|
|
}
|
|
PyObject *exctype = PyExc_ModuleNotFoundError;
|
|
PyObject *exc = new_importerror(tstate, exctype, msg, name, NULL, NULL);
|
|
Py_DECREF(msg);
|
|
if (exc == NULL) {
|
|
return -1;
|
|
}
|
|
_PyErr_SetObject(tstate, exctype, exc);
|
|
Py_DECREF(exc);
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
_PyErr_BadInternalCall(const char *filename, int lineno)
|
|
{
|
|
PyThreadState *tstate = _PyThreadState_GET();
|
|
_PyErr_Format(tstate, 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)
|
|
{
|
|
assert(0 && "bad argument to internal function");
|
|
PyThreadState *tstate = _PyThreadState_GET();
|
|
_PyErr_SetString(tstate, PyExc_SystemError,
|
|
"bad argument to internal function");
|
|
}
|
|
#define PyErr_BadInternalCall() _PyErr_BadInternalCall(__FILE__, __LINE__)
|
|
|
|
|
|
PyObject *
|
|
_PyErr_FormatV(PyThreadState *tstate, PyObject *exception,
|
|
const char *format, va_list vargs)
|
|
{
|
|
PyObject* string;
|
|
|
|
/* Issue #23571: PyUnicode_FromFormatV() must not be called with an
|
|
exception set, it calls arbitrary Python code like PyObject_Repr() */
|
|
_PyErr_Clear(tstate);
|
|
|
|
string = PyUnicode_FromFormatV(format, vargs);
|
|
if (string != NULL) {
|
|
_PyErr_SetObject(tstate, exception, string);
|
|
Py_DECREF(string);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
|
|
PyObject *
|
|
PyErr_FormatV(PyObject *exception, const char *format, va_list vargs)
|
|
{
|
|
PyThreadState *tstate = _PyThreadState_GET();
|
|
return _PyErr_FormatV(tstate, exception, format, vargs);
|
|
}
|
|
|
|
|
|
PyObject *
|
|
_PyErr_Format(PyThreadState *tstate, PyObject *exception,
|
|
const char *format, ...)
|
|
{
|
|
va_list vargs;
|
|
va_start(vargs, format);
|
|
_PyErr_FormatV(tstate, exception, format, vargs);
|
|
va_end(vargs);
|
|
return NULL;
|
|
}
|
|
|
|
|
|
PyObject *
|
|
PyErr_Format(PyObject *exception, const char *format, ...)
|
|
{
|
|
PyThreadState *tstate = _PyThreadState_GET();
|
|
va_list vargs;
|
|
va_start(vargs, format);
|
|
_PyErr_FormatV(tstate, exception, format, vargs);
|
|
va_end(vargs);
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/* Adds a note to the current exception (if any) */
|
|
void
|
|
_PyErr_FormatNote(const char *format, ...)
|
|
{
|
|
PyObject *exc = PyErr_GetRaisedException();
|
|
if (exc == NULL) {
|
|
return;
|
|
}
|
|
va_list vargs;
|
|
va_start(vargs, format);
|
|
PyObject *note = PyUnicode_FromFormatV(format, vargs);
|
|
va_end(vargs);
|
|
if (note == NULL) {
|
|
goto error;
|
|
}
|
|
int res = _PyException_AddNote(exc, note);
|
|
Py_DECREF(note);
|
|
if (res < 0) {
|
|
goto error;
|
|
}
|
|
PyErr_SetRaisedException(exc);
|
|
return;
|
|
error:
|
|
_PyErr_ChainExceptions1(exc);
|
|
}
|
|
|
|
|
|
PyObject *
|
|
PyErr_NewException(const char *name, PyObject *base, PyObject *dict)
|
|
{
|
|
PyThreadState *tstate = _PyThreadState_GET();
|
|
PyObject *modulename = NULL;
|
|
PyObject *mydict = NULL;
|
|
PyObject *bases = NULL;
|
|
PyObject *result = NULL;
|
|
|
|
const char *dot = strrchr(name, '.');
|
|
if (dot == NULL) {
|
|
_PyErr_SetString(tstate, 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;
|
|
}
|
|
|
|
int r = PyDict_Contains(dict, &_Py_ID(__module__));
|
|
if (r < 0) {
|
|
goto failure;
|
|
}
|
|
if (r == 0) {
|
|
modulename = PyUnicode_FromStringAndSize(name,
|
|
(Py_ssize_t)(dot-name));
|
|
if (modulename == NULL)
|
|
goto failure;
|
|
if (PyDict_SetItem(dict, &_Py_ID(__module__), modulename) != 0)
|
|
goto failure;
|
|
}
|
|
if (PyTuple_Check(base)) {
|
|
bases = Py_NewRef(base);
|
|
} else {
|
|
bases = PyTuple_Pack(1, base);
|
|
if (bases == NULL)
|
|
goto failure;
|
|
}
|
|
/* Create a real class. */
|
|
result = PyObject_CallFunction((PyObject *)&PyType_Type, "sOO",
|
|
dot+1, bases, dict);
|
|
failure:
|
|
Py_XDECREF(bases);
|
|
Py_XDECREF(mydict);
|
|
Py_XDECREF(modulename);
|
|
return result;
|
|
}
|
|
|
|
|
|
/* Create an exception with docstring */
|
|
PyObject *
|
|
PyErr_NewExceptionWithDoc(const char *name, const char *doc,
|
|
PyObject *base, PyObject *dict)
|
|
{
|
|
int result;
|
|
PyObject *ret = NULL;
|
|
PyObject *mydict = NULL; /* points to the dict only if we create it */
|
|
PyObject *docobj;
|
|
|
|
if (dict == NULL) {
|
|
dict = mydict = PyDict_New();
|
|
if (dict == NULL) {
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
if (doc != NULL) {
|
|
docobj = PyUnicode_FromString(doc);
|
|
if (docobj == NULL)
|
|
goto failure;
|
|
result = PyDict_SetItemString(dict, "__doc__", docobj);
|
|
Py_DECREF(docobj);
|
|
if (result < 0)
|
|
goto failure;
|
|
}
|
|
|
|
ret = PyErr_NewException(name, base, dict);
|
|
failure:
|
|
Py_XDECREF(mydict);
|
|
return ret;
|
|
}
|
|
|
|
|
|
PyDoc_STRVAR(UnraisableHookArgs__doc__,
|
|
"UnraisableHookArgs\n\
|
|
\n\
|
|
Type used to pass arguments to sys.unraisablehook.");
|
|
|
|
static PyTypeObject UnraisableHookArgsType;
|
|
|
|
static PyStructSequence_Field UnraisableHookArgs_fields[] = {
|
|
{"exc_type", "Exception type"},
|
|
{"exc_value", "Exception value"},
|
|
{"exc_traceback", "Exception traceback"},
|
|
{"err_msg", "Error message"},
|
|
{"object", "Object causing the exception"},
|
|
{0}
|
|
};
|
|
|
|
static PyStructSequence_Desc UnraisableHookArgs_desc = {
|
|
.name = "UnraisableHookArgs",
|
|
.doc = UnraisableHookArgs__doc__,
|
|
.fields = UnraisableHookArgs_fields,
|
|
.n_in_sequence = 5
|
|
};
|
|
|
|
|
|
PyStatus
|
|
_PyErr_InitTypes(PyInterpreterState *interp)
|
|
{
|
|
if (_PyStructSequence_InitBuiltin(interp, &UnraisableHookArgsType,
|
|
&UnraisableHookArgs_desc) < 0)
|
|
{
|
|
return _PyStatus_ERR("failed to initialize UnraisableHookArgs type");
|
|
}
|
|
return _PyStatus_OK();
|
|
}
|
|
|
|
|
|
void
|
|
_PyErr_FiniTypes(PyInterpreterState *interp)
|
|
{
|
|
_PyStructSequence_FiniBuiltin(interp, &UnraisableHookArgsType);
|
|
}
|
|
|
|
|
|
static PyObject *
|
|
make_unraisable_hook_args(PyThreadState *tstate, PyObject *exc_type,
|
|
PyObject *exc_value, PyObject *exc_tb,
|
|
PyObject *err_msg, PyObject *obj)
|
|
{
|
|
PyObject *args = PyStructSequence_New(&UnraisableHookArgsType);
|
|
if (args == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
Py_ssize_t pos = 0;
|
|
#define ADD_ITEM(exc_type) \
|
|
do { \
|
|
if (exc_type == NULL) { \
|
|
exc_type = Py_None; \
|
|
} \
|
|
PyStructSequence_SET_ITEM(args, pos++, Py_NewRef(exc_type)); \
|
|
} while (0)
|
|
|
|
|
|
ADD_ITEM(exc_type);
|
|
ADD_ITEM(exc_value);
|
|
ADD_ITEM(exc_tb);
|
|
ADD_ITEM(err_msg);
|
|
ADD_ITEM(obj);
|
|
#undef ADD_ITEM
|
|
|
|
if (_PyErr_Occurred(tstate)) {
|
|
Py_DECREF(args);
|
|
return NULL;
|
|
}
|
|
return args;
|
|
}
|
|
|
|
|
|
|
|
/* Default implementation of sys.unraisablehook.
|
|
|
|
It can be called to log the exception of a custom sys.unraisablehook.
|
|
|
|
Do nothing if sys.stderr attribute doesn't exist or is set to None. */
|
|
static int
|
|
write_unraisable_exc_file(PyThreadState *tstate, PyObject *exc_type,
|
|
PyObject *exc_value, PyObject *exc_tb,
|
|
PyObject *err_msg, PyObject *obj, PyObject *file)
|
|
{
|
|
if (obj != NULL && obj != Py_None) {
|
|
if (err_msg != NULL && err_msg != Py_None) {
|
|
if (PyFile_WriteObject(err_msg, file, Py_PRINT_RAW) < 0) {
|
|
return -1;
|
|
}
|
|
if (PyFile_WriteString(": ", file) < 0) {
|
|
return -1;
|
|
}
|
|
}
|
|
else {
|
|
if (PyFile_WriteString("Exception ignored in: ", file) < 0) {
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
if (PyFile_WriteObject(obj, file, 0) < 0) {
|
|
_PyErr_Clear(tstate);
|
|
if (PyFile_WriteString("<object repr() failed>", file) < 0) {
|
|
return -1;
|
|
}
|
|
}
|
|
if (PyFile_WriteString("\n", file) < 0) {
|
|
return -1;
|
|
}
|
|
}
|
|
else if (err_msg != NULL && err_msg != Py_None) {
|
|
if (PyFile_WriteObject(err_msg, file, Py_PRINT_RAW) < 0) {
|
|
return -1;
|
|
}
|
|
if (PyFile_WriteString(":\n", file) < 0) {
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
if (exc_tb != NULL && exc_tb != Py_None) {
|
|
if (PyTraceBack_Print(exc_tb, file) < 0) {
|
|
/* continue even if writing the traceback failed */
|
|
_PyErr_Clear(tstate);
|
|
}
|
|
}
|
|
|
|
if (exc_type == NULL || exc_type == Py_None) {
|
|
return -1;
|
|
}
|
|
|
|
assert(PyExceptionClass_Check(exc_type));
|
|
|
|
PyObject *modulename = PyObject_GetAttr(exc_type, &_Py_ID(__module__));
|
|
if (modulename == NULL || !PyUnicode_Check(modulename)) {
|
|
Py_XDECREF(modulename);
|
|
_PyErr_Clear(tstate);
|
|
if (PyFile_WriteString("<unknown>", file) < 0) {
|
|
return -1;
|
|
}
|
|
}
|
|
else {
|
|
if (!_PyUnicode_Equal(modulename, &_Py_ID(builtins)) &&
|
|
!_PyUnicode_Equal(modulename, &_Py_ID(__main__))) {
|
|
if (PyFile_WriteObject(modulename, file, Py_PRINT_RAW) < 0) {
|
|
Py_DECREF(modulename);
|
|
return -1;
|
|
}
|
|
Py_DECREF(modulename);
|
|
if (PyFile_WriteString(".", file) < 0) {
|
|
return -1;
|
|
}
|
|
}
|
|
else {
|
|
Py_DECREF(modulename);
|
|
}
|
|
}
|
|
|
|
PyObject *qualname = PyType_GetQualName((PyTypeObject *)exc_type);
|
|
if (qualname == NULL || !PyUnicode_Check(qualname)) {
|
|
Py_XDECREF(qualname);
|
|
_PyErr_Clear(tstate);
|
|
if (PyFile_WriteString("<unknown>", file) < 0) {
|
|
return -1;
|
|
}
|
|
}
|
|
else {
|
|
if (PyFile_WriteObject(qualname, file, Py_PRINT_RAW) < 0) {
|
|
Py_DECREF(qualname);
|
|
return -1;
|
|
}
|
|
Py_DECREF(qualname);
|
|
}
|
|
|
|
if (exc_value && exc_value != Py_None) {
|
|
if (PyFile_WriteString(": ", file) < 0) {
|
|
return -1;
|
|
}
|
|
if (PyFile_WriteObject(exc_value, file, Py_PRINT_RAW) < 0) {
|
|
_PyErr_Clear(tstate);
|
|
if (PyFile_WriteString("<exception str() failed>", file) < 0) {
|
|
return -1;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (PyFile_WriteString("\n", file) < 0) {
|
|
return -1;
|
|
}
|
|
|
|
/* Explicitly call file.flush() */
|
|
if (_PyFile_Flush(file) < 0) {
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int
|
|
write_unraisable_exc(PyThreadState *tstate, PyObject *exc_type,
|
|
PyObject *exc_value, PyObject *exc_tb, PyObject *err_msg,
|
|
PyObject *obj)
|
|
{
|
|
PyObject *file;
|
|
if (_PySys_GetOptionalAttr(&_Py_ID(stderr), &file) < 0) {
|
|
return -1;
|
|
}
|
|
if (file == NULL || file == Py_None) {
|
|
Py_XDECREF(file);
|
|
return 0;
|
|
}
|
|
|
|
int res = write_unraisable_exc_file(tstate, exc_type, exc_value, exc_tb,
|
|
err_msg, obj, file);
|
|
Py_DECREF(file);
|
|
|
|
return res;
|
|
}
|
|
|
|
|
|
PyObject*
|
|
_PyErr_WriteUnraisableDefaultHook(PyObject *args)
|
|
{
|
|
PyThreadState *tstate = _PyThreadState_GET();
|
|
|
|
if (!Py_IS_TYPE(args, &UnraisableHookArgsType)) {
|
|
_PyErr_SetString(tstate, PyExc_TypeError,
|
|
"sys.unraisablehook argument type "
|
|
"must be UnraisableHookArgs");
|
|
return NULL;
|
|
}
|
|
|
|
/* Borrowed references */
|
|
PyObject *exc_type = PyStructSequence_GET_ITEM(args, 0);
|
|
PyObject *exc_value = PyStructSequence_GET_ITEM(args, 1);
|
|
PyObject *exc_tb = PyStructSequence_GET_ITEM(args, 2);
|
|
PyObject *err_msg = PyStructSequence_GET_ITEM(args, 3);
|
|
PyObject *obj = PyStructSequence_GET_ITEM(args, 4);
|
|
|
|
if (write_unraisable_exc(tstate, exc_type, exc_value, exc_tb, err_msg, obj) < 0) {
|
|
return NULL;
|
|
}
|
|
Py_RETURN_NONE;
|
|
}
|
|
|
|
|
|
/* Call sys.unraisablehook().
|
|
|
|
This function can be used when an exception has occurred but there is no way
|
|
for Python to handle it. For example, when a destructor raises an exception
|
|
or during garbage collection (gc.collect()).
|
|
|
|
If format is non-NULL, the error message is formatted using format and
|
|
variable arguments as in PyUnicode_FromFormat().
|
|
Otherwise, use "Exception ignored in" error message.
|
|
|
|
An exception must be set when calling this function. */
|
|
|
|
static void
|
|
format_unraisable_v(const char *format, va_list va, PyObject *obj)
|
|
{
|
|
const char *err_msg_str;
|
|
PyThreadState *tstate = _PyThreadState_GET();
|
|
_Py_EnsureTstateNotNULL(tstate);
|
|
|
|
PyObject *err_msg = NULL;
|
|
PyObject *exc_type, *exc_value, *exc_tb;
|
|
_PyErr_Fetch(tstate, &exc_type, &exc_value, &exc_tb);
|
|
|
|
assert(exc_type != NULL);
|
|
|
|
if (exc_type == NULL) {
|
|
/* sys.unraisablehook requires that at least exc_type is set */
|
|
goto default_hook;
|
|
}
|
|
|
|
if (exc_tb == NULL) {
|
|
PyFrameObject *frame = PyThreadState_GetFrame(tstate);
|
|
if (frame != NULL) {
|
|
exc_tb = _PyTraceBack_FromFrame(NULL, frame);
|
|
if (exc_tb == NULL) {
|
|
_PyErr_Clear(tstate);
|
|
}
|
|
Py_DECREF(frame);
|
|
}
|
|
}
|
|
|
|
_PyErr_NormalizeException(tstate, &exc_type, &exc_value, &exc_tb);
|
|
|
|
if (exc_tb != NULL && exc_tb != Py_None && PyTraceBack_Check(exc_tb)) {
|
|
if (PyException_SetTraceback(exc_value, exc_tb) < 0) {
|
|
_PyErr_Clear(tstate);
|
|
}
|
|
}
|
|
|
|
if (format != NULL) {
|
|
err_msg = PyUnicode_FromFormatV(format, va);
|
|
if (err_msg == NULL) {
|
|
PyErr_Clear();
|
|
}
|
|
}
|
|
|
|
PyObject *hook_args = make_unraisable_hook_args(
|
|
tstate, exc_type, exc_value, exc_tb, err_msg, obj);
|
|
if (hook_args == NULL) {
|
|
err_msg_str = ("Exception ignored while building "
|
|
"sys.unraisablehook arguments");
|
|
goto error;
|
|
}
|
|
|
|
PyObject *hook;
|
|
if (_PySys_GetOptionalAttr(&_Py_ID(unraisablehook), &hook) < 0) {
|
|
Py_DECREF(hook_args);
|
|
err_msg_str = NULL;
|
|
obj = NULL;
|
|
goto error;
|
|
}
|
|
if (hook == NULL) {
|
|
Py_DECREF(hook_args);
|
|
goto default_hook;
|
|
}
|
|
|
|
if (_PySys_Audit(tstate, "sys.unraisablehook", "OO", hook, hook_args) < 0) {
|
|
Py_DECREF(hook);
|
|
Py_DECREF(hook_args);
|
|
err_msg_str = "Exception ignored in audit hook";
|
|
obj = NULL;
|
|
goto error;
|
|
}
|
|
|
|
if (hook == Py_None) {
|
|
Py_DECREF(hook);
|
|
Py_DECREF(hook_args);
|
|
goto default_hook;
|
|
}
|
|
|
|
PyObject *res = PyObject_CallOneArg(hook, hook_args);
|
|
Py_DECREF(hook);
|
|
Py_DECREF(hook_args);
|
|
if (res != NULL) {
|
|
Py_DECREF(res);
|
|
goto done;
|
|
}
|
|
|
|
/* sys.unraisablehook failed: log its error using default hook */
|
|
obj = hook;
|
|
err_msg_str = NULL;
|
|
|
|
error:
|
|
/* err_msg_str and obj have been updated and we have a new exception */
|
|
Py_XSETREF(err_msg, PyUnicode_FromString(err_msg_str ?
|
|
err_msg_str : "Exception ignored in sys.unraisablehook"));
|
|
Py_XDECREF(exc_type);
|
|
Py_XDECREF(exc_value);
|
|
Py_XDECREF(exc_tb);
|
|
_PyErr_Fetch(tstate, &exc_type, &exc_value, &exc_tb);
|
|
|
|
default_hook:
|
|
/* Call the default unraisable hook (ignore failure) */
|
|
(void)write_unraisable_exc(tstate, exc_type, exc_value, exc_tb,
|
|
err_msg, obj);
|
|
|
|
done:
|
|
Py_XDECREF(exc_type);
|
|
Py_XDECREF(exc_value);
|
|
Py_XDECREF(exc_tb);
|
|
Py_XDECREF(err_msg);
|
|
_PyErr_Clear(tstate); /* Just in case */
|
|
}
|
|
|
|
void
|
|
PyErr_FormatUnraisable(const char *format, ...)
|
|
{
|
|
va_list va;
|
|
|
|
va_start(va, format);
|
|
format_unraisable_v(format, va, NULL);
|
|
va_end(va);
|
|
}
|
|
|
|
static void
|
|
format_unraisable(PyObject *obj, const char *format, ...)
|
|
{
|
|
va_list va;
|
|
|
|
va_start(va, format);
|
|
format_unraisable_v(format, va, obj);
|
|
va_end(va);
|
|
}
|
|
|
|
void
|
|
PyErr_WriteUnraisable(PyObject *obj)
|
|
{
|
|
format_unraisable(obj, NULL);
|
|
}
|
|
|
|
|
|
void
|
|
PyErr_SyntaxLocation(const char *filename, int lineno)
|
|
{
|
|
PyErr_SyntaxLocationEx(filename, lineno, -1);
|
|
}
|
|
|
|
|
|
/* 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. */
|
|
|
|
static void
|
|
PyErr_SyntaxLocationObjectEx(PyObject *filename, int lineno, int col_offset,
|
|
int end_lineno, int end_col_offset)
|
|
{
|
|
PyThreadState *tstate = _PyThreadState_GET();
|
|
|
|
/* add attributes for the line number and filename for the error */
|
|
PyObject *exc = _PyErr_GetRaisedException(tstate);
|
|
/* XXX check that it is, indeed, a syntax error. It might not
|
|
* be, though. */
|
|
PyObject *tmp = PyLong_FromLong(lineno);
|
|
if (tmp == NULL) {
|
|
_PyErr_Clear(tstate);
|
|
}
|
|
else {
|
|
if (PyObject_SetAttr(exc, &_Py_ID(lineno), tmp)) {
|
|
_PyErr_Clear(tstate);
|
|
}
|
|
Py_DECREF(tmp);
|
|
}
|
|
tmp = NULL;
|
|
if (col_offset >= 0) {
|
|
tmp = PyLong_FromLong(col_offset);
|
|
if (tmp == NULL) {
|
|
_PyErr_Clear(tstate);
|
|
}
|
|
}
|
|
if (PyObject_SetAttr(exc, &_Py_ID(offset), tmp ? tmp : Py_None)) {
|
|
_PyErr_Clear(tstate);
|
|
}
|
|
Py_XDECREF(tmp);
|
|
|
|
tmp = NULL;
|
|
if (end_lineno >= 0) {
|
|
tmp = PyLong_FromLong(end_lineno);
|
|
if (tmp == NULL) {
|
|
_PyErr_Clear(tstate);
|
|
}
|
|
}
|
|
if (PyObject_SetAttr(exc, &_Py_ID(end_lineno), tmp ? tmp : Py_None)) {
|
|
_PyErr_Clear(tstate);
|
|
}
|
|
Py_XDECREF(tmp);
|
|
|
|
tmp = NULL;
|
|
if (end_col_offset >= 0) {
|
|
tmp = PyLong_FromLong(end_col_offset);
|
|
if (tmp == NULL) {
|
|
_PyErr_Clear(tstate);
|
|
}
|
|
}
|
|
if (PyObject_SetAttr(exc, &_Py_ID(end_offset), tmp ? tmp : Py_None)) {
|
|
_PyErr_Clear(tstate);
|
|
}
|
|
Py_XDECREF(tmp);
|
|
|
|
tmp = NULL;
|
|
if (filename != NULL) {
|
|
if (PyObject_SetAttr(exc, &_Py_ID(filename), filename)) {
|
|
_PyErr_Clear(tstate);
|
|
}
|
|
|
|
tmp = PyErr_ProgramTextObject(filename, lineno);
|
|
if (tmp) {
|
|
if (PyObject_SetAttr(exc, &_Py_ID(text), tmp)) {
|
|
_PyErr_Clear(tstate);
|
|
}
|
|
Py_DECREF(tmp);
|
|
}
|
|
else {
|
|
_PyErr_Clear(tstate);
|
|
}
|
|
}
|
|
if ((PyObject *)Py_TYPE(exc) != PyExc_SyntaxError) {
|
|
int rc = PyObject_HasAttrWithError(exc, &_Py_ID(msg));
|
|
if (rc < 0) {
|
|
_PyErr_Clear(tstate);
|
|
}
|
|
else if (!rc) {
|
|
tmp = PyObject_Str(exc);
|
|
if (tmp) {
|
|
if (PyObject_SetAttr(exc, &_Py_ID(msg), tmp)) {
|
|
_PyErr_Clear(tstate);
|
|
}
|
|
Py_DECREF(tmp);
|
|
}
|
|
else {
|
|
_PyErr_Clear(tstate);
|
|
}
|
|
}
|
|
|
|
rc = PyObject_HasAttrWithError(exc, &_Py_ID(print_file_and_line));
|
|
if (rc < 0) {
|
|
_PyErr_Clear(tstate);
|
|
}
|
|
else if (!rc) {
|
|
if (PyObject_SetAttr(exc, &_Py_ID(print_file_and_line), Py_None)) {
|
|
_PyErr_Clear(tstate);
|
|
}
|
|
}
|
|
}
|
|
_PyErr_SetRaisedException(tstate, exc);
|
|
}
|
|
|
|
void
|
|
PyErr_SyntaxLocationObject(PyObject *filename, int lineno, int col_offset) {
|
|
PyErr_SyntaxLocationObjectEx(filename, lineno, col_offset, lineno, -1);
|
|
}
|
|
|
|
void
|
|
PyErr_RangedSyntaxLocationObject(PyObject *filename, int lineno, int col_offset,
|
|
int end_lineno, int end_col_offset) {
|
|
PyErr_SyntaxLocationObjectEx(filename, lineno, col_offset, end_lineno, end_col_offset);
|
|
}
|
|
|
|
void
|
|
PyErr_SyntaxLocationEx(const char *filename, int lineno, int col_offset)
|
|
{
|
|
PyThreadState *tstate = _PyThreadState_GET();
|
|
PyObject *fileobj;
|
|
if (filename != NULL) {
|
|
fileobj = PyUnicode_DecodeFSDefault(filename);
|
|
if (fileobj == NULL) {
|
|
_PyErr_Clear(tstate);
|
|
}
|
|
}
|
|
else {
|
|
fileobj = NULL;
|
|
}
|
|
PyErr_SyntaxLocationObject(fileobj, lineno, col_offset);
|
|
Py_XDECREF(fileobj);
|
|
}
|
|
|
|
/* Raises a SyntaxError.
|
|
* If something goes wrong, a different exception may be raised.
|
|
*/
|
|
void
|
|
_PyErr_RaiseSyntaxError(PyObject *msg, PyObject *filename, int lineno, int col_offset,
|
|
int end_lineno, int end_col_offset)
|
|
{
|
|
PyObject *text = PyErr_ProgramTextObject(filename, lineno);
|
|
if (text == NULL) {
|
|
text = Py_NewRef(Py_None);
|
|
}
|
|
PyObject *args = Py_BuildValue("O(OiiOii)", msg, filename,
|
|
lineno, col_offset, text,
|
|
end_lineno, end_col_offset);
|
|
if (args == NULL) {
|
|
goto exit;
|
|
}
|
|
PyErr_SetObject(PyExc_SyntaxError, args);
|
|
exit:
|
|
Py_DECREF(text);
|
|
Py_XDECREF(args);
|
|
}
|
|
|
|
/* Emits a SyntaxWarning and returns 0 on success.
|
|
If a SyntaxWarning is raised as error, replaces it with a SyntaxError
|
|
and returns -1.
|
|
*/
|
|
int
|
|
_PyErr_EmitSyntaxWarning(PyObject *msg, PyObject *filename, int lineno, int col_offset,
|
|
int end_lineno, int end_col_offset)
|
|
{
|
|
if (PyErr_WarnExplicitObject(PyExc_SyntaxWarning, msg,
|
|
filename, lineno, NULL, NULL) < 0)
|
|
{
|
|
if (PyErr_ExceptionMatches(PyExc_SyntaxWarning)) {
|
|
/* Replace the SyntaxWarning exception with a SyntaxError
|
|
to get a more accurate error report */
|
|
PyErr_Clear();
|
|
_PyErr_RaiseSyntaxError(msg, filename, lineno, col_offset,
|
|
end_lineno, end_col_offset);
|
|
}
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* 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. */
|
|
|
|
static PyObject *
|
|
err_programtext(FILE *fp, int lineno, const char* encoding)
|
|
{
|
|
char linebuf[1000];
|
|
size_t line_size = 0;
|
|
|
|
for (int i = 0; i < lineno; ) {
|
|
line_size = 0;
|
|
if (_Py_UniversalNewlineFgetsWithSize(linebuf, sizeof(linebuf),
|
|
fp, NULL, &line_size) == NULL)
|
|
{
|
|
/* Error or EOF. */
|
|
return NULL;
|
|
}
|
|
/* fgets read *something*; if it didn't fill the
|
|
whole buffer, it must have found a newline
|
|
or hit the end of the file; if the last character is \n,
|
|
it obviously found a newline; else we haven't
|
|
yet seen a newline, so must continue */
|
|
if (i + 1 < lineno
|
|
&& line_size == sizeof(linebuf) - 1
|
|
&& linebuf[sizeof(linebuf) - 2] != '\n')
|
|
{
|
|
continue;
|
|
}
|
|
i++;
|
|
}
|
|
|
|
const char *line = linebuf;
|
|
/* Skip BOM. */
|
|
if (lineno == 1 && line_size >= 3 && memcmp(line, "\xef\xbb\xbf", 3) == 0) {
|
|
line += 3;
|
|
line_size -= 3;
|
|
}
|
|
PyObject *res = PyUnicode_Decode(line, line_size, encoding, "replace");
|
|
if (res == NULL) {
|
|
PyErr_Clear();
|
|
}
|
|
return res;
|
|
}
|
|
|
|
PyObject *
|
|
PyErr_ProgramText(const char *filename, int lineno)
|
|
{
|
|
if (filename == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
PyObject *filename_obj = PyUnicode_DecodeFSDefault(filename);
|
|
if (filename_obj == NULL) {
|
|
PyErr_Clear();
|
|
return NULL;
|
|
}
|
|
PyObject *res = PyErr_ProgramTextObject(filename_obj, lineno);
|
|
Py_DECREF(filename_obj);
|
|
return res;
|
|
}
|
|
|
|
/* Function from Parser/tokenizer/file_tokenizer.c */
|
|
extern char* _PyTokenizer_FindEncodingFilename(int, PyObject *);
|
|
|
|
PyObject *
|
|
_PyErr_ProgramDecodedTextObject(PyObject *filename, int lineno, const char* encoding)
|
|
{
|
|
char *found_encoding = NULL;
|
|
if (filename == NULL || lineno <= 0) {
|
|
return NULL;
|
|
}
|
|
|
|
FILE *fp = Py_fopen(filename, "r" PY_STDIOTEXTMODE);
|
|
if (fp == NULL) {
|
|
PyErr_Clear();
|
|
return NULL;
|
|
}
|
|
if (encoding == NULL) {
|
|
int fd = fileno(fp);
|
|
found_encoding = _PyTokenizer_FindEncodingFilename(fd, filename);
|
|
encoding = found_encoding;
|
|
if (encoding == NULL) {
|
|
PyErr_Clear();
|
|
encoding = "utf-8";
|
|
}
|
|
/* Reset position */
|
|
if (lseek(fd, 0, SEEK_SET) == (off_t)-1) {
|
|
fclose(fp);
|
|
PyMem_Free(found_encoding);
|
|
return NULL;
|
|
}
|
|
}
|
|
PyObject *res = err_programtext(fp, lineno, encoding);
|
|
fclose(fp);
|
|
PyMem_Free(found_encoding);
|
|
return res;
|
|
}
|
|
|
|
PyObject *
|
|
PyErr_ProgramTextObject(PyObject *filename, int lineno)
|
|
{
|
|
return _PyErr_ProgramDecodedTextObject(filename, lineno, NULL);
|
|
}
|