| |
| /* 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) |
| { |
| /* If there is no thread state, PyThreadState_GET calls |
| Py_FatalError, which calls PyErr_Occurred. To avoid the |
| resulting infinite loop, we inline PyThreadState_GET here and |
| treat no thread as no error. */ |
| PyThreadState *tstate = |
| ((PyThreadState*)_Py_atomic_load_relaxed(&_PyThreadState_Current)); |
| |
| return tstate == NULL ? NULL : 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) |
| { |
| PyErr_SetNone(PyExc_MemoryError); |
| return NULL; |
| } |
| |
| PyObject * |
| PyErr_SetFromErrnoWithFilenameObject(PyObject *exc, PyObject *filenameObject) |
| { |
| 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) { |
| 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) |
| args = Py_BuildValue("(iOO)", i, message, filenameObject); |
| else |
| 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((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 = filename ? PyUnicode_DecodeFSDefault(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 *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) |
| filenameObject = Py_None; |
| /* This is the constructor signature for passing a Windows error code. |
| The POSIX translation will be figured out by the constructor. */ |
| args = Py_BuildValue("(iOOi)", 0, message, filenameObject, err); |
| Py_DECREF(message); |
| |
| if (args != NULL) { |
| v = PyObject_Call(exc, args, NULL); |
| Py_DECREF(args); |
| if (v != NULL) { |
| PyErr_SetObject((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 = filename ? PyUnicode_DecodeFSDefault(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_DecodeFSDefault(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 */ |
| |
| PyObject * |
| PyErr_SetImportError(PyObject *msg, PyObject *name, PyObject *path) |
| { |
| PyObject *args, *kwargs, *error; |
| |
| args = PyTuple_New(1); |
| if (args == NULL) |
| return NULL; |
| |
| kwargs = PyDict_New(); |
| if (args == NULL) |
| return NULL; |
| |
| if (name == NULL) |
| name = Py_None; |
| |
| if (path == NULL) |
| path = Py_None; |
| |
| Py_INCREF(msg); |
| PyTuple_SetItem(args, 0, msg); |
| PyDict_SetItemString(kwargs, "name", name); |
| PyDict_SetItemString(kwargs, "path", path); |
| |
| /* args must at least be an empty tuple */ |
| if (args == NULL) |
| args = PyTuple_New(0); |
| |
| error = PyObject_Call(PyExc_ImportError, args, kwargs); |
| if (error!= NULL) { |
| PyErr_SetObject((PyObject *) Py_TYPE(error), error); |
| Py_DECREF(error); |
| } |
| |
| Py_DECREF(args); |
| Py_DECREF(kwargs); |
| |
| return NULL; |
| } |
| |
| 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 class. */ |
| result = PyObject_CallFunction((PyObject *)&PyType_Type, "sOO", |
| dot+1, bases, dict); |
| failure: |
| Py_XDECREF(bases); |
| Py_XDECREF(mydict); |
| Py_XDECREF(classname); |
| 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; |
| } |
| |
| |
| /* 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) |
| { |
| _Py_IDENTIFIER(__module__); |
| 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_GetAttrId(t, &PyId___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); |
| } |
| if (obj) { |
| 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); |
| |
| |
| 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. */ |
| |
| void |
| PyErr_SyntaxLocationEx(const char *filename, int lineno, int col_offset) |
| { |
| PyObject *exc, *v, *tb, *tmp; |
| _Py_IDENTIFIER(filename); |
| _Py_IDENTIFIER(lineno); |
| _Py_IDENTIFIER(msg); |
| _Py_IDENTIFIER(offset); |
| _Py_IDENTIFIER(print_file_and_line); |
| _Py_IDENTIFIER(text); |
| |
| /* 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_SetAttrId(v, &PyId_lineno, tmp)) |
| PyErr_Clear(); |
| Py_DECREF(tmp); |
| } |
| if (col_offset >= 0) { |
| tmp = PyLong_FromLong(col_offset); |
| if (tmp == NULL) |
| PyErr_Clear(); |
| else { |
| if (_PyObject_SetAttrId(v, &PyId_offset, tmp)) |
| PyErr_Clear(); |
| Py_DECREF(tmp); |
| } |
| } |
| if (filename != NULL) { |
| tmp = PyUnicode_DecodeFSDefault(filename); |
| if (tmp == NULL) |
| PyErr_Clear(); |
| else { |
| if (_PyObject_SetAttrId(v, &PyId_filename, tmp)) |
| PyErr_Clear(); |
| Py_DECREF(tmp); |
| } |
| |
| tmp = PyErr_ProgramText(filename, lineno); |
| if (tmp) { |
| if (_PyObject_SetAttrId(v, &PyId_text, tmp)) |
| PyErr_Clear(); |
| Py_DECREF(tmp); |
| } |
| } |
| if (_PyObject_SetAttrId(v, &PyId_offset, Py_None)) { |
| PyErr_Clear(); |
| } |
| if (exc != PyExc_SyntaxError) { |
| if (!_PyObject_HasAttrId(v, &PyId_msg)) { |
| tmp = PyObject_Str(v); |
| if (tmp) { |
| if (_PyObject_SetAttrId(v, &PyId_msg, tmp)) |
| PyErr_Clear(); |
| Py_DECREF(tmp); |
| } else { |
| PyErr_Clear(); |
| } |
| } |
| if (!_PyObject_HasAttrId(v, &PyId_print_file_and_line)) { |
| if (_PyObject_SetAttrId(v, &PyId_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 |