void
PyErr_Display(PyObject *exception, PyObject *value, PyObject *tb)
{
PyObject *seen;
PyObject *f = _PySys_GetObjectId(&PyId_stderr);
if (PyExceptionInstance_Check(value)
&& tb != NULL && PyTraceBack_Check(tb)) {
/* Put the traceback on the exception, otherwise it won't get
displayed. See issue #18776. */
PyObject *cur_tb = PyException_GetTraceback(value);
if (cur_tb == NULL)
PyException_SetTraceback(value, tb);
else
Py_DECREF(cur_tb);
}
if (f == Py_None) {
/* pass */
}
else if (f == NULL) {
_PyObject_Dump(value);
fprintf(stderr, "lost sys.stderr\n");
}
else {
/* We choose to ignore seen being possibly NULL, and report
at least the main exception (it could be a MemoryError).
*/
seen = PySet_New(NULL);
if (seen == NULL)
PyErr_Clear();
print_exception_recursive(f, value, seen);
Py_XDECREF(seen);
}
}
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 *fixed_value;
/* Issue #23571: functions must not be called with an
exception set */
PyErr_Clear();
fixed_value = _PyErr_CreateException(exception, value);
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);
}
NUITKA_MAY_BE_UNUSED static void RAISE_EXCEPTION_WITH_TYPE( PyObject **exception_type, PyObject **exception_value, PyTracebackObject **exception_tb )
{
*exception_value = NULL;
*exception_tb = NULL;
#if PYTHON_VERSION < 300
// Next, repeatedly, replace a tuple exception with its first item
while( PyTuple_Check( *exception_type ) && PyTuple_Size( *exception_type ) > 0 )
{
PyObject *tmp = *exception_type;
*exception_type = PyTuple_GET_ITEM( *exception_type, 0 );
Py_INCREF( *exception_type );
Py_DECREF( tmp );
}
#endif
if ( PyExceptionClass_Check( *exception_type ) )
{
NORMALIZE_EXCEPTION( exception_type, exception_value, exception_tb );
#if PYTHON_VERSION >= 270
if (unlikely( !PyExceptionInstance_Check( *exception_value ) ))
{
PyErr_Format(
PyExc_TypeError,
"calling %s() should have returned an instance of BaseException, not '%s'",
((PyTypeObject *)*exception_type)->tp_name,
Py_TYPE( *exception_value )->tp_name
);
Py_DECREF( *exception_type );
Py_DECREF( *exception_value );
FETCH_ERROR_OCCURRED( exception_type, exception_value, exception_tb );
return;
}
#endif
#if PYTHON_VERSION >= 300
CHAIN_EXCEPTION( *exception_type, *exception_value );
#endif
return;
}
else if ( PyExceptionInstance_Check( *exception_type ) )
{
*exception_value = *exception_type;
*exception_type = PyExceptionInstance_Class( *exception_type );
Py_INCREF( *exception_type );
#if PYTHON_VERSION >= 300
CHAIN_EXCEPTION( *exception_type, *exception_value );
// TODO: Ever true?
if ( *exception_tb )
{
PyTracebackObject *prev = (PyTracebackObject *)PyException_GetTraceback( *exception_value );
if ( prev != NULL )
{
assert( (*exception_tb)->tb_next == NULL );
(*exception_tb)->tb_next = prev;
}
PyException_SetTraceback( *exception_value, (PyObject *)(*exception_tb ? *exception_tb : (PyTracebackObject *)Py_None ) );
}
*exception_tb = (PyTracebackObject *)PyException_GetTraceback( *exception_value );
#endif
return;
}
else
{
Py_DECREF( *exception_type );
PyErr_Format( PyExc_TypeError, WRONG_EXCEPTION_TYPE_ERROR_MESSAGE, Py_TYPE( *exception_type )->tp_name );
FETCH_ERROR_OCCURRED( exception_type, exception_value, exception_tb );
return;
}
}
static void
print_exception(PyObject *f, PyObject *value)
{
int err = 0;
PyObject *type, *tb;
_Py_IDENTIFIER(print_file_and_line);
if (!PyExceptionInstance_Check(value)) {
err = PyFile_WriteString("TypeError: print_exception(): Exception expected for value, ", f);
err += PyFile_WriteString(Py_TYPE(value)->tp_name, f);
err += PyFile_WriteString(" found\n", f);
if (err)
PyErr_Clear();
return;
}
Py_INCREF(value);
fflush(stdout);
type = (PyObject *) Py_TYPE(value);
tb = PyException_GetTraceback(value);
if (tb && tb != Py_None)
err = PyTraceBack_Print(tb, f);
if (err == 0 &&
_PyObject_HasAttrId(value, &PyId_print_file_and_line))
{
PyObject *message, *filename, *text;
int lineno, offset;
if (!parse_syntax_error(value, &message, &filename,
&lineno, &offset, &text))
PyErr_Clear();
else {
PyObject *line;
Py_DECREF(value);
value = message;
line = PyUnicode_FromFormat(" File \"%U\", line %d\n",
filename, lineno);
Py_DECREF(filename);
if (line != NULL) {
PyFile_WriteObject(line, f, Py_PRINT_RAW);
Py_DECREF(line);
}
if (text != NULL) {
print_error_text(f, offset, text);
Py_DECREF(text);
}
/* Can't be bothered to check all those
PyFile_WriteString() calls */
if (PyErr_Occurred())
err = -1;
}
}
if (err) {
/* Don't do anything else */
}
else {
PyObject* moduleName;
const char *className;
_Py_IDENTIFIER(__module__);
assert(PyExceptionClass_Check(type));
className = PyExceptionClass_Name(type);
if (className != NULL) {
const char *dot = strrchr(className, '.');
if (dot != NULL)
className = dot+1;
}
moduleName = _PyObject_GetAttrId(type, &PyId___module__);
if (moduleName == NULL || !PyUnicode_Check(moduleName))
{
Py_XDECREF(moduleName);
err = PyFile_WriteString("<unknown>", f);
}
else {
if (!_PyUnicode_EqualToASCIIId(moduleName, &PyId_builtins))
{
err = PyFile_WriteObject(moduleName, f, Py_PRINT_RAW);
err += PyFile_WriteString(".", f);
}
Py_DECREF(moduleName);
}
if (err == 0) {
if (className == NULL)
err = PyFile_WriteString("<unknown>", f);
else
err = PyFile_WriteString(className, f);
}
}
if (err == 0 && (value != Py_None)) {
PyObject *s = PyObject_Str(value);
/* only print colon if the str() of the
object is not the empty string
*/
if (s == NULL) {
PyErr_Clear();
err = -1;
PyFile_WriteString(": <exception str() failed>", f);
}
else if (!PyUnicode_Check(s) ||
PyUnicode_GetLength(s) != 0)
err = PyFile_WriteString(": ", f);
if (err == 0)
err = PyFile_WriteObject(s, f, Py_PRINT_RAW);
Py_XDECREF(s);
}
/* try to write a newline in any case */
if (err < 0) {
PyErr_Clear();
}
err += PyFile_WriteString("\n", f);
Py_XDECREF(tb);
Py_DECREF(value);
/* If an error happened here, don't show it.
XXX This is wrong, but too many callers rely on this behavior. */
if (err != 0)
PyErr_Clear();
}
static PyObject *
gen_throw(PyGenObject *gen, PyObject *args)
{
PyObject *typ;
PyObject *tb = NULL;
PyObject *val = NULL;
PyObject *yf = _PyGen_yf(gen);
_Py_IDENTIFIER(throw);
if (!PyArg_UnpackTuple(args, "throw", 1, 3, &typ, &val, &tb))
return NULL;
if (yf) {
PyObject *ret;
int err;
if (PyErr_GivenExceptionMatches(typ, PyExc_GeneratorExit)) {
gen->gi_running = 1;
err = gen_close_iter(yf);
gen->gi_running = 0;
Py_DECREF(yf);
if (err < 0)
return gen_send_ex(gen, Py_None, 1, 0);
goto throw_here;
}
if (PyGen_CheckExact(yf)) {
gen->gi_running = 1;
ret = gen_throw((PyGenObject *)yf, args);
gen->gi_running = 0;
} else {
PyObject *meth = _PyObject_GetAttrId(yf, &PyId_throw);
if (meth == NULL) {
if (!PyErr_ExceptionMatches(PyExc_AttributeError)) {
Py_DECREF(yf);
return NULL;
}
PyErr_Clear();
Py_DECREF(yf);
goto throw_here;
}
gen->gi_running = 1;
ret = PyObject_CallObject(meth, args);
gen->gi_running = 0;
Py_DECREF(meth);
}
Py_DECREF(yf);
if (!ret) {
PyObject *val;
/* Pop subiterator from stack */
ret = *(--gen->gi_frame->f_stacktop);
assert(ret == yf);
Py_DECREF(ret);
/* Termination repetition of YIELD_FROM */
gen->gi_frame->f_lasti += 2;
if (_PyGen_FetchStopIterationValue(&val) == 0) {
ret = gen_send_ex(gen, val, 0, 0);
Py_DECREF(val);
} else {
ret = gen_send_ex(gen, Py_None, 1, 0);
}
}
return ret;
}
throw_here:
/* First, check the traceback argument, replacing None with
NULL. */
if (tb == Py_None) {
tb = NULL;
}
else if (tb != NULL && !PyTraceBack_Check(tb)) {
PyErr_SetString(PyExc_TypeError,
"throw() third argument must be a traceback object");
return NULL;
}
Py_INCREF(typ);
Py_XINCREF(val);
Py_XINCREF(tb);
if (PyExceptionClass_Check(typ))
PyErr_NormalizeException(&typ, &val, &tb);
else if (PyExceptionInstance_Check(typ)) {
/* Raising an instance. The value should be a dummy. */
if (val && val != Py_None) {
PyErr_SetString(PyExc_TypeError,
"instance exception may not have a separate value");
goto failed_throw;
}
else {
/* Normalize to raise <class>, <instance> */
Py_XDECREF(val);
val = typ;
typ = PyExceptionInstance_Class(typ);
Py_INCREF(typ);
if (tb == NULL)
/* Returns NULL if there's no traceback */
tb = PyException_GetTraceback(val);
}
}
else {
/* Not something you can raise. throw() fails. */
PyErr_Format(PyExc_TypeError,
"exceptions must be classes or instances "
"deriving from BaseException, not %s",
Py_TYPE(typ)->tp_name);
goto failed_throw;
}
PyErr_Restore(typ, val, tb);
return gen_send_ex(gen, Py_None, 1, 0);
failed_throw:
/* Didn't use our arguments, so restore their original refcounts */
Py_DECREF(typ);
Py_XDECREF(val);
Py_XDECREF(tb);
return NULL;
}
NUITKA_NO_RETURN NUITKA_MAY_BE_UNUSED static void RAISE_EXCEPTION_WITH_TYPE( PyObject *exception_type, PyObject *exception_tb )
{
PyTracebackObject *traceback = (PyTracebackObject *)exception_tb;
assertObject( traceback );
assert( PyTraceBack_Check( traceback ) );
assertObject( exception_type );
if ( PyExceptionClass_Check( exception_type ) )
{
PyObject *value = NULL;
Py_INCREF( exception_type );
Py_XINCREF( traceback );
NORMALIZE_EXCEPTION( &exception_type, &value, &traceback );
#if PYTHON_VERSION >= 270
if (unlikely( !PyExceptionInstance_Check( value ) ))
{
Py_DECREF( exception_type );
Py_DECREF( value );
Py_XDECREF( traceback );
PyErr_Format(
PyExc_TypeError,
"calling %s() should have returned an instance of BaseException, not '%s'",
((PyTypeObject *)exception_type)->tp_name,
Py_TYPE( value )->tp_name
);
throw PythonException();
}
#endif
#if PYTHON_VERSION >= 300
CHAIN_EXCEPTION( exception_type, value );
#endif
throw PythonException(
exception_type,
value,
traceback
);
}
else if ( PyExceptionInstance_Check( exception_type ) )
{
PyObject *value = exception_type;
exception_type = PyExceptionInstance_Class( exception_type );
#if PYTHON_VERSION >= 300
CHAIN_EXCEPTION( exception_type, value );
PyTracebackObject *prev = (PyTracebackObject *)PyException_GetTraceback( value );
if ( prev != NULL )
{
assert( traceback->tb_next == NULL );
traceback->tb_next = prev;
}
PyException_SetTraceback( value, (PyObject *)traceback );
#endif
throw PythonException(
INCREASE_REFCOUNT( exception_type ),
INCREASE_REFCOUNT( value ),
INCREASE_REFCOUNT( traceback )
);
}
else
{
PyErr_Format( PyExc_TypeError, WRONG_EXCEPTION_TYPE_ERROR_MESSAGE, Py_TYPE( exception_type )->tp_name );
PythonException to_throw;
to_throw.setTraceback( INCREASE_REFCOUNT( traceback ) );
throw to_throw;
}
}
