| /* This module provides the suite of standard class-based exceptions for |
| * Python's builtin module. This is a complete C implementation of what, |
| * in Python 1.5.2, was contained in the exceptions.py module. The problem |
| * there was that if exceptions.py could not be imported for some reason, |
| * the entire interpreter would abort. |
| * |
| * By moving the exceptions into C and statically linking, we can guarantee |
| * that the standard exceptions will always be available. |
| * |
| * history: |
| * 98-08-19 fl created (for pyexe) |
| * 00-02-08 fl updated for 1.5.2 |
| * 26-May-2000 baw vetted for Python 1.6 |
| * |
| * written by Fredrik Lundh |
| * modifications, additions, cleanups, and proofreading by Barry Warsaw |
| * |
| * Copyright (c) 1998-2000 by Secret Labs AB. All rights reserved. |
| */ |
| |
| #include "Python.h" |
| #include "osdefs.h" |
| |
| /* Caution: MS Visual C++ 6 errors if a single string literal exceeds |
| * 2Kb. So the module docstring has been broken roughly in half, using |
| * compile-time literal concatenation. |
| */ |
| |
| /* NOTE: If the exception class hierarchy changes, don't forget to update |
| * Doc/lib/libexcs.tex! |
| */ |
| |
| static char |
| module__doc__[] = |
| "Python's standard exception class hierarchy.\n\ |
| \n\ |
| Before Python 1.5, the standard exceptions were all simple string objects.\n\ |
| In Python 1.5, the standard exceptions were converted to classes organized\n\ |
| into a relatively flat hierarchy. String-based standard exceptions were\n\ |
| optional, or used as a fallback if some problem occurred while importing\n\ |
| the exception module. With Python 1.6, optional string-based standard\n\ |
| exceptions were removed (along with the -X command line flag).\n\ |
| \n\ |
| The class exceptions were implemented in such a way as to be almost\n\ |
| completely backward compatible. Some tricky uses of IOError could\n\ |
| potentially have broken, but by Python 1.6, all of these should have\n\ |
| been fixed. As of Python 1.6, the class-based standard exceptions are\n\ |
| now implemented in C, and are guaranteed to exist in the Python\n\ |
| interpreter.\n\ |
| \n\ |
| Here is a rundown of the class hierarchy. The classes found here are\n\ |
| inserted into both the exceptions module and the `built-in' module. It is\n\ |
| recommended that user defined class based exceptions be derived from the\n\ |
| `Exception' class, although this is currently not enforced.\n" |
| /* keep string pieces "small" */ |
| "\n\ |
| Exception\n\ |
| |\n\ |
| +-- SystemExit\n\ |
| +-- StopIteration\n\ |
| +-- StandardError\n\ |
| | |\n\ |
| | +-- KeyboardInterrupt\n\ |
| | +-- ImportError\n\ |
| | +-- EnvironmentError\n\ |
| | | |\n\ |
| | | +-- IOError\n\ |
| | | +-- OSError\n\ |
| | | |\n\ |
| | | +-- WindowsError\n\ |
| | |\n\ |
| | +-- EOFError\n\ |
| | +-- RuntimeError\n\ |
| | | |\n\ |
| | | +-- NotImplementedError\n\ |
| | |\n\ |
| | +-- NameError\n\ |
| | | |\n\ |
| | | +-- UnboundLocalError\n\ |
| | |\n\ |
| | +-- AttributeError\n\ |
| | +-- SyntaxError\n\ |
| | | |\n\ |
| | | +-- IndentationError\n\ |
| | | |\n\ |
| | | +-- TabError\n\ |
| | |\n\ |
| | +-- TypeError\n\ |
| | +-- AssertionError\n\ |
| | +-- LookupError\n\ |
| | | |\n\ |
| | | +-- IndexError\n\ |
| | | +-- KeyError\n\ |
| | |\n\ |
| | +-- ArithmeticError\n\ |
| | | |\n\ |
| | | +-- OverflowError\n\ |
| | | +-- ZeroDivisionError\n\ |
| | | +-- FloatingPointError\n\ |
| | |\n\ |
| | +-- ValueError\n\ |
| | | |\n\ |
| | | +-- UnicodeError\n\ |
| | |\n\ |
| | +-- ReferenceError\n\ |
| | +-- SystemError\n\ |
| | +-- MemoryError\n\ |
| |\n\ |
| +---Warning\n\ |
| |\n\ |
| +-- UserWarning\n\ |
| +-- DeprecationWarning\n\ |
| +-- SyntaxWarning\n\ |
| +-- OverflowWarning\n\ |
| +-- RuntimeWarning"; |
| |
| |
| /* Helper function for populating a dictionary with method wrappers. */ |
| static int |
| populate_methods(PyObject *klass, PyObject *dict, PyMethodDef *methods) |
| { |
| if (!methods) |
| return 0; |
| |
| while (methods->ml_name) { |
| /* get a wrapper for the built-in function */ |
| PyObject *func = PyCFunction_New(methods, NULL); |
| PyObject *meth; |
| int status; |
| |
| if (!func) |
| return -1; |
| |
| /* turn the function into an unbound method */ |
| if (!(meth = PyMethod_New(func, NULL, klass))) { |
| Py_DECREF(func); |
| return -1; |
| } |
| |
| /* add method to dictionary */ |
| status = PyDict_SetItemString(dict, methods->ml_name, meth); |
| Py_DECREF(meth); |
| Py_DECREF(func); |
| |
| /* stop now if an error occurred, otherwise do the next method */ |
| if (status) |
| return status; |
| |
| methods++; |
| } |
| return 0; |
| } |
| |
| |
| |
| /* This function is used to create all subsequent exception classes. */ |
| static int |
| make_class(PyObject **klass, PyObject *base, |
| char *name, PyMethodDef *methods, |
| char *docstr) |
| { |
| PyObject *dict = PyDict_New(); |
| PyObject *str = NULL; |
| int status = -1; |
| |
| if (!dict) |
| return -1; |
| |
| /* If an error occurs from here on, goto finally instead of explicitly |
| * returning NULL. |
| */ |
| |
| if (docstr) { |
| if (!(str = PyString_FromString(docstr))) |
| goto finally; |
| if (PyDict_SetItemString(dict, "__doc__", str)) |
| goto finally; |
| } |
| |
| if (!(*klass = PyErr_NewException(name, base, dict))) |
| goto finally; |
| |
| if (populate_methods(*klass, dict, methods)) { |
| Py_DECREF(*klass); |
| *klass = NULL; |
| goto finally; |
| } |
| |
| status = 0; |
| |
| finally: |
| Py_XDECREF(dict); |
| Py_XDECREF(str); |
| return status; |
| } |
| |
| |
| /* Use this for *args signatures, otherwise just use PyArg_ParseTuple() */ |
| static PyObject * |
| get_self(PyObject *args) |
| { |
| PyObject *self = PyTuple_GetItem(args, 0); |
| if (!self) { |
| /* Watch out for being called to early in the bootstrapping process */ |
| if (PyExc_TypeError) { |
| PyErr_SetString(PyExc_TypeError, |
| "unbound method must be called with instance as first argument"); |
| } |
| return NULL; |
| } |
| return self; |
| } |
| |
| |
| |
| /* Notes on bootstrapping the exception classes. |
| * |
| * First thing we create is the base class for all exceptions, called |
| * appropriately enough: Exception. Creation of this class makes no |
| * assumptions about the existence of any other exception class -- except |
| * for TypeError, which can conditionally exist. |
| * |
| * Next, StandardError is created (which is quite simple) followed by |
| * TypeError, because the instantiation of other exceptions can potentially |
| * throw a TypeError. Once these exceptions are created, all the others |
| * can be created in any order. See the static exctable below for the |
| * explicit bootstrap order. |
| * |
| * All classes after Exception can be created using PyErr_NewException(). |
| */ |
| |
| static char |
| Exception__doc__[] = "Common base class for all exceptions."; |
| |
| |
| static PyObject * |
| Exception__init__(PyObject *self, PyObject *args) |
| { |
| int status; |
| |
| if (!(self = get_self(args))) |
| return NULL; |
| |
| /* set args attribute */ |
| /* XXX size is only a hint */ |
| args = PySequence_GetSlice(args, 1, PySequence_Size(args)); |
| if (!args) |
| return NULL; |
| status = PyObject_SetAttrString(self, "args", args); |
| Py_DECREF(args); |
| if (status < 0) |
| return NULL; |
| |
| Py_INCREF(Py_None); |
| return Py_None; |
| } |
| |
| |
| static PyObject * |
| Exception__str__(PyObject *self, PyObject *args) |
| { |
| PyObject *out; |
| |
| if (!PyArg_ParseTuple(args, "O:__str__", &self)) |
| return NULL; |
| |
| args = PyObject_GetAttrString(self, "args"); |
| if (!args) |
| return NULL; |
| |
| switch (PySequence_Size(args)) { |
| case 0: |
| out = PyString_FromString(""); |
| break; |
| case 1: |
| { |
| PyObject *tmp = PySequence_GetItem(args, 0); |
| if (tmp) { |
| out = PyObject_Str(tmp); |
| Py_DECREF(tmp); |
| } |
| else |
| out = NULL; |
| break; |
| } |
| default: |
| out = PyObject_Str(args); |
| break; |
| } |
| |
| Py_DECREF(args); |
| return out; |
| } |
| |
| |
| static PyObject * |
| Exception__getitem__(PyObject *self, PyObject *args) |
| { |
| PyObject *out; |
| PyObject *index; |
| |
| if (!PyArg_ParseTuple(args, "OO:__getitem__", &self, &index)) |
| return NULL; |
| |
| args = PyObject_GetAttrString(self, "args"); |
| if (!args) |
| return NULL; |
| |
| out = PyObject_GetItem(args, index); |
| Py_DECREF(args); |
| return out; |
| } |
| |
| |
| static PyMethodDef |
| Exception_methods[] = { |
| /* methods for the Exception class */ |
| { "__getitem__", Exception__getitem__, METH_VARARGS}, |
| { "__str__", Exception__str__, METH_VARARGS}, |
| { "__init__", Exception__init__, METH_VARARGS}, |
| { NULL, NULL } |
| }; |
| |
| |
| static int |
| make_Exception(char *modulename) |
| { |
| PyObject *dict = PyDict_New(); |
| PyObject *str = NULL; |
| PyObject *name = NULL; |
| int status = -1; |
| |
| if (!dict) |
| return -1; |
| |
| /* If an error occurs from here on, goto finally instead of explicitly |
| * returning NULL. |
| */ |
| |
| if (!(str = PyString_FromString(modulename))) |
| goto finally; |
| if (PyDict_SetItemString(dict, "__module__", str)) |
| goto finally; |
| Py_DECREF(str); |
| if (!(str = PyString_FromString(Exception__doc__))) |
| goto finally; |
| if (PyDict_SetItemString(dict, "__doc__", str)) |
| goto finally; |
| |
| if (!(name = PyString_FromString("Exception"))) |
| goto finally; |
| |
| if (!(PyExc_Exception = PyClass_New(NULL, dict, name))) |
| goto finally; |
| |
| /* Now populate the dictionary with the method suite */ |
| if (populate_methods(PyExc_Exception, dict, Exception_methods)) |
| /* Don't need to reclaim PyExc_Exception here because that'll |
| * happen during interpreter shutdown. |
| */ |
| goto finally; |
| |
| status = 0; |
| |
| finally: |
| Py_XDECREF(dict); |
| Py_XDECREF(str); |
| Py_XDECREF(name); |
| return status; |
| } |
| |
| |
| |
| static char |
| StandardError__doc__[] = "Base class for all standard Python exceptions."; |
| |
| static char |
| TypeError__doc__[] = "Inappropriate argument type."; |
| |
| static char |
| StopIteration__doc__[] = "Signal the end from iterator.next()."; |
| |
| |
| |
| static char |
| SystemExit__doc__[] = "Request to exit from the interpreter."; |
| |
| |
| static PyObject * |
| SystemExit__init__(PyObject *self, PyObject *args) |
| { |
| PyObject *code; |
| int status; |
| |
| if (!(self = get_self(args))) |
| return NULL; |
| |
| /* Set args attribute. */ |
| if (!(args = PySequence_GetSlice(args, 1, PySequence_Size(args)))) |
| return NULL; |
| |
| status = PyObject_SetAttrString(self, "args", args); |
| if (status < 0) { |
| Py_DECREF(args); |
| return NULL; |
| } |
| |
| /* set code attribute */ |
| switch (PySequence_Size(args)) { |
| case 0: |
| Py_INCREF(Py_None); |
| code = Py_None; |
| break; |
| case 1: |
| code = PySequence_GetItem(args, 0); |
| break; |
| default: |
| Py_INCREF(args); |
| code = args; |
| break; |
| } |
| |
| status = PyObject_SetAttrString(self, "code", code); |
| Py_DECREF(code); |
| Py_DECREF(args); |
| if (status < 0) |
| return NULL; |
| |
| Py_INCREF(Py_None); |
| return Py_None; |
| } |
| |
| |
| static PyMethodDef SystemExit_methods[] = { |
| { "__init__", SystemExit__init__, METH_VARARGS}, |
| {NULL, NULL} |
| }; |
| |
| |
| |
| static char |
| KeyboardInterrupt__doc__[] = "Program interrupted by user."; |
| |
| static char |
| ImportError__doc__[] = |
| "Import can't find module, or can't find name in module."; |
| |
| |
| |
| static char |
| EnvironmentError__doc__[] = "Base class for I/O related errors."; |
| |
| |
| static PyObject * |
| EnvironmentError__init__(PyObject *self, PyObject *args) |
| { |
| PyObject *item0 = NULL; |
| PyObject *item1 = NULL; |
| PyObject *item2 = NULL; |
| PyObject *subslice = NULL; |
| PyObject *rtnval = NULL; |
| |
| if (!(self = get_self(args))) |
| return NULL; |
| |
| if (!(args = PySequence_GetSlice(args, 1, PySequence_Size(args)))) |
| return NULL; |
| |
| if (PyObject_SetAttrString(self, "args", args) || |
| PyObject_SetAttrString(self, "errno", Py_None) || |
| PyObject_SetAttrString(self, "strerror", Py_None) || |
| PyObject_SetAttrString(self, "filename", Py_None)) |
| { |
| goto finally; |
| } |
| |
| switch (PySequence_Size(args)) { |
| case 3: |
| /* Where a function has a single filename, such as open() or some |
| * of the os module functions, PyErr_SetFromErrnoWithFilename() is |
| * called, giving a third argument which is the filename. But, so |
| * that old code using in-place unpacking doesn't break, e.g.: |
| * |
| * except IOError, (errno, strerror): |
| * |
| * we hack args so that it only contains two items. This also |
| * means we need our own __str__() which prints out the filename |
| * when it was supplied. |
| */ |
| item0 = PySequence_GetItem(args, 0); |
| item1 = PySequence_GetItem(args, 1); |
| item2 = PySequence_GetItem(args, 2); |
| if (!item0 || !item1 || !item2) |
| goto finally; |
| |
| if (PyObject_SetAttrString(self, "errno", item0) || |
| PyObject_SetAttrString(self, "strerror", item1) || |
| PyObject_SetAttrString(self, "filename", item2)) |
| { |
| goto finally; |
| } |
| |
| subslice = PySequence_GetSlice(args, 0, 2); |
| if (!subslice || PyObject_SetAttrString(self, "args", subslice)) |
| goto finally; |
| break; |
| |
| case 2: |
| /* Used when PyErr_SetFromErrno() is called and no filename |
| * argument is given. |
| */ |
| item0 = PySequence_GetItem(args, 0); |
| item1 = PySequence_GetItem(args, 1); |
| if (!item0 || !item1) |
| goto finally; |
| |
| if (PyObject_SetAttrString(self, "errno", item0) || |
| PyObject_SetAttrString(self, "strerror", item1)) |
| { |
| goto finally; |
| } |
| break; |
| } |
| |
| Py_INCREF(Py_None); |
| rtnval = Py_None; |
| |
| finally: |
| Py_DECREF(args); |
| Py_XDECREF(item0); |
| Py_XDECREF(item1); |
| Py_XDECREF(item2); |
| Py_XDECREF(subslice); |
| return rtnval; |
| } |
| |
| |
| static PyObject * |
| EnvironmentError__str__(PyObject *self, PyObject *args) |
| { |
| PyObject *originalself = self; |
| PyObject *filename; |
| PyObject *serrno; |
| PyObject *strerror; |
| PyObject *rtnval = NULL; |
| |
| if (!PyArg_ParseTuple(args, "O:__str__", &self)) |
| return NULL; |
| |
| filename = PyObject_GetAttrString(self, "filename"); |
| serrno = PyObject_GetAttrString(self, "errno"); |
| strerror = PyObject_GetAttrString(self, "strerror"); |
| if (!filename || !serrno || !strerror) |
| goto finally; |
| |
| if (filename != Py_None) { |
| PyObject *fmt = PyString_FromString("[Errno %s] %s: %s"); |
| PyObject *repr = PyObject_Repr(filename); |
| PyObject *tuple = PyTuple_New(3); |
| |
| if (!fmt || !repr || !tuple) { |
| Py_XDECREF(fmt); |
| Py_XDECREF(repr); |
| Py_XDECREF(tuple); |
| goto finally; |
| } |
| |
| PyTuple_SET_ITEM(tuple, 0, serrno); |
| PyTuple_SET_ITEM(tuple, 1, strerror); |
| PyTuple_SET_ITEM(tuple, 2, repr); |
| |
| rtnval = PyString_Format(fmt, tuple); |
| |
| Py_DECREF(fmt); |
| Py_DECREF(tuple); |
| /* already freed because tuple owned only reference */ |
| serrno = NULL; |
| strerror = NULL; |
| } |
| else if (PyObject_IsTrue(serrno) && PyObject_IsTrue(strerror)) { |
| PyObject *fmt = PyString_FromString("[Errno %s] %s"); |
| PyObject *tuple = PyTuple_New(2); |
| |
| if (!fmt || !tuple) { |
| Py_XDECREF(fmt); |
| Py_XDECREF(tuple); |
| goto finally; |
| } |
| |
| PyTuple_SET_ITEM(tuple, 0, serrno); |
| PyTuple_SET_ITEM(tuple, 1, strerror); |
| |
| rtnval = PyString_Format(fmt, tuple); |
| |
| Py_DECREF(fmt); |
| Py_DECREF(tuple); |
| /* already freed because tuple owned only reference */ |
| serrno = NULL; |
| strerror = NULL; |
| } |
| else |
| /* The original Python code said: |
| * |
| * return StandardError.__str__(self) |
| * |
| * but there is no StandardError__str__() function; we happen to |
| * know that's just a pass through to Exception__str__(). |
| */ |
| rtnval = Exception__str__(originalself, args); |
| |
| finally: |
| Py_XDECREF(filename); |
| Py_XDECREF(serrno); |
| Py_XDECREF(strerror); |
| return rtnval; |
| } |
| |
| |
| static |
| PyMethodDef EnvironmentError_methods[] = { |
| {"__init__", EnvironmentError__init__, METH_VARARGS}, |
| {"__str__", EnvironmentError__str__, METH_VARARGS}, |
| {NULL, NULL} |
| }; |
| |
| |
| |
| |
| static char |
| IOError__doc__[] = "I/O operation failed."; |
| |
| static char |
| OSError__doc__[] = "OS system call failed."; |
| |
| #ifdef MS_WINDOWS |
| static char |
| WindowsError__doc__[] = "MS-Windows OS system call failed."; |
| #endif /* MS_WINDOWS */ |
| |
| static char |
| EOFError__doc__[] = "Read beyond end of file."; |
| |
| static char |
| RuntimeError__doc__[] = "Unspecified run-time error."; |
| |
| static char |
| NotImplementedError__doc__[] = |
| "Method or function hasn't been implemented yet."; |
| |
| static char |
| NameError__doc__[] = "Name not found globally."; |
| |
| static char |
| UnboundLocalError__doc__[] = |
| "Local name referenced but not bound to a value."; |
| |
| static char |
| AttributeError__doc__[] = "Attribute not found."; |
| |
| |
| |
| static char |
| SyntaxError__doc__[] = "Invalid syntax."; |
| |
| |
| static int |
| SyntaxError__classinit__(PyObject *klass) |
| { |
| int retval = 0; |
| PyObject *emptystring = PyString_FromString(""); |
| |
| /* Additional class-creation time initializations */ |
| if (!emptystring || |
| PyObject_SetAttrString(klass, "msg", emptystring) || |
| PyObject_SetAttrString(klass, "filename", Py_None) || |
| PyObject_SetAttrString(klass, "lineno", Py_None) || |
| PyObject_SetAttrString(klass, "offset", Py_None) || |
| PyObject_SetAttrString(klass, "text", Py_None) || |
| PyObject_SetAttrString(klass, "print_file_and_line", Py_None)) |
| { |
| retval = -1; |
| } |
| Py_XDECREF(emptystring); |
| return retval; |
| } |
| |
| |
| static PyObject * |
| SyntaxError__init__(PyObject *self, PyObject *args) |
| { |
| PyObject *rtnval = NULL; |
| int lenargs; |
| |
| if (!(self = get_self(args))) |
| return NULL; |
| |
| if (!(args = PySequence_GetSlice(args, 1, PySequence_Size(args)))) |
| return NULL; |
| |
| if (PyObject_SetAttrString(self, "args", args)) |
| goto finally; |
| |
| lenargs = PySequence_Size(args); |
| if (lenargs >= 1) { |
| PyObject *item0 = PySequence_GetItem(args, 0); |
| int status; |
| |
| if (!item0) |
| goto finally; |
| status = PyObject_SetAttrString(self, "msg", item0); |
| Py_DECREF(item0); |
| if (status) |
| goto finally; |
| } |
| if (lenargs == 2) { |
| PyObject *info = PySequence_GetItem(args, 1); |
| PyObject *filename = NULL, *lineno = NULL; |
| PyObject *offset = NULL, *text = NULL; |
| int status = 1; |
| |
| if (!info) |
| goto finally; |
| |
| filename = PySequence_GetItem(info, 0); |
| if (filename != NULL) { |
| lineno = PySequence_GetItem(info, 1); |
| if (lineno != NULL) { |
| offset = PySequence_GetItem(info, 2); |
| if (offset != NULL) { |
| text = PySequence_GetItem(info, 3); |
| if (text != NULL) { |
| status = |
| PyObject_SetAttrString(self, "filename", filename) |
| || PyObject_SetAttrString(self, "lineno", lineno) |
| || PyObject_SetAttrString(self, "offset", offset) |
| || PyObject_SetAttrString(self, "text", text); |
| Py_DECREF(text); |
| } |
| Py_DECREF(offset); |
| } |
| Py_DECREF(lineno); |
| } |
| Py_DECREF(filename); |
| } |
| Py_DECREF(info); |
| |
| if (status) |
| goto finally; |
| } |
| Py_INCREF(Py_None); |
| rtnval = Py_None; |
| |
| finally: |
| Py_DECREF(args); |
| return rtnval; |
| } |
| |
| |
| /* This is called "my_basename" instead of just "basename" to avoid name |
| conflicts with glibc; basename is already prototyped if _GNU_SOURCE is |
| defined, and Python does define that. */ |
| static char * |
| my_basename(char *name) |
| { |
| char *cp = name; |
| char *result = name; |
| |
| if (name == NULL) |
| return "???"; |
| while (*cp != '\0') { |
| if (*cp == SEP) |
| result = cp + 1; |
| ++cp; |
| } |
| return result; |
| } |
| |
| |
| static PyObject * |
| SyntaxError__str__(PyObject *self, PyObject *args) |
| { |
| PyObject *msg; |
| PyObject *str; |
| PyObject *filename, *lineno, *result; |
| |
| if (!PyArg_ParseTuple(args, "O:__str__", &self)) |
| return NULL; |
| |
| if (!(msg = PyObject_GetAttrString(self, "msg"))) |
| return NULL; |
| |
| str = PyObject_Str(msg); |
| Py_DECREF(msg); |
| result = str; |
| |
| /* XXX -- do all the additional formatting with filename and |
| lineno here */ |
| |
| if (PyString_Check(str)) { |
| int have_filename = 0; |
| int have_lineno = 0; |
| char *buffer = NULL; |
| |
| if ((filename = PyObject_GetAttrString(self, "filename")) != NULL) |
| have_filename = PyString_Check(filename); |
| else |
| PyErr_Clear(); |
| |
| if ((lineno = PyObject_GetAttrString(self, "lineno")) != NULL) |
| have_lineno = PyInt_Check(lineno); |
| else |
| PyErr_Clear(); |
| |
| if (have_filename || have_lineno) { |
| int bufsize = PyString_GET_SIZE(str) + 64; |
| if (have_filename) |
| bufsize += PyString_GET_SIZE(filename); |
| |
| buffer = PyMem_MALLOC(bufsize); |
| if (buffer != NULL) { |
| if (have_filename && have_lineno) |
| PyOS_snprintf(buffer, bufsize, "%s (%s, line %ld)", |
| PyString_AS_STRING(str), |
| my_basename(PyString_AS_STRING(filename)), |
| PyInt_AsLong(lineno)); |
| else if (have_filename) |
| PyOS_snprintf(buffer, bufsize, "%s (%s)", |
| PyString_AS_STRING(str), |
| my_basename(PyString_AS_STRING(filename))); |
| else if (have_lineno) |
| PyOS_snprintf(buffer, bufsize, "%s (line %ld)", |
| PyString_AS_STRING(str), |
| PyInt_AsLong(lineno)); |
| |
| result = PyString_FromString(buffer); |
| PyMem_FREE(buffer); |
| |
| if (result == NULL) |
| result = str; |
| else |
| Py_DECREF(str); |
| } |
| } |
| Py_XDECREF(filename); |
| Py_XDECREF(lineno); |
| } |
| return result; |
| } |
| |
| |
| static PyMethodDef SyntaxError_methods[] = { |
| {"__init__", SyntaxError__init__, METH_VARARGS}, |
| {"__str__", SyntaxError__str__, METH_VARARGS}, |
| {NULL, NULL} |
| }; |
| |
| |
| |
| /* Exception doc strings */ |
| |
| static char |
| AssertionError__doc__[] = "Assertion failed."; |
| |
| static char |
| LookupError__doc__[] = "Base class for lookup errors."; |
| |
| static char |
| IndexError__doc__[] = "Sequence index out of range."; |
| |
| static char |
| KeyError__doc__[] = "Mapping key not found."; |
| |
| static char |
| ArithmeticError__doc__[] = "Base class for arithmetic errors."; |
| |
| static char |
| OverflowError__doc__[] = "Result too large to be represented."; |
| |
| static char |
| ZeroDivisionError__doc__[] = |
| "Second argument to a division or modulo operation was zero."; |
| |
| static char |
| FloatingPointError__doc__[] = "Floating point operation failed."; |
| |
| static char |
| ValueError__doc__[] = "Inappropriate argument value (of correct type)."; |
| |
| static char |
| UnicodeError__doc__[] = "Unicode related error."; |
| |
| static char |
| SystemError__doc__[] = "Internal error in the Python interpreter.\n\ |
| \n\ |
| Please report this to the Python maintainer, along with the traceback,\n\ |
| the Python version, and the hardware/OS platform and version."; |
| |
| static char |
| ReferenceError__doc__[] = "Weak ref proxy used after referent went away."; |
| |
| static char |
| MemoryError__doc__[] = "Out of memory."; |
| |
| static char |
| IndentationError__doc__[] = "Improper indentation."; |
| |
| static char |
| TabError__doc__[] = "Improper mixture of spaces and tabs."; |
| |
| /* Warning category docstrings */ |
| |
| static char |
| Warning__doc__[] = "Base class for warning categories."; |
| |
| static char |
| UserWarning__doc__[] = "Base class for warnings generated by user code."; |
| |
| static char |
| DeprecationWarning__doc__[] = |
| "Base class for warnings about deprecated features."; |
| |
| static char |
| SyntaxWarning__doc__[] = "Base class for warnings about dubious syntax."; |
| |
| static char |
| OverflowWarning__doc__[] = "Base class for warnings about numeric overflow."; |
| |
| static char |
| RuntimeWarning__doc__[] = |
| "Base class for warnings about dubious runtime behavior."; |
| |
| |
| |
| /* module global functions */ |
| static PyMethodDef functions[] = { |
| /* Sentinel */ |
| {NULL, NULL} |
| }; |
| |
| |
| |
| /* Global C API defined exceptions */ |
| |
| PyObject *PyExc_Exception; |
| PyObject *PyExc_StopIteration; |
| PyObject *PyExc_StandardError; |
| PyObject *PyExc_ArithmeticError; |
| PyObject *PyExc_LookupError; |
| |
| PyObject *PyExc_AssertionError; |
| PyObject *PyExc_AttributeError; |
| PyObject *PyExc_EOFError; |
| PyObject *PyExc_FloatingPointError; |
| PyObject *PyExc_EnvironmentError; |
| PyObject *PyExc_IOError; |
| PyObject *PyExc_OSError; |
| PyObject *PyExc_ImportError; |
| PyObject *PyExc_IndexError; |
| PyObject *PyExc_KeyError; |
| PyObject *PyExc_KeyboardInterrupt; |
| PyObject *PyExc_MemoryError; |
| PyObject *PyExc_NameError; |
| PyObject *PyExc_OverflowError; |
| PyObject *PyExc_RuntimeError; |
| PyObject *PyExc_NotImplementedError; |
| PyObject *PyExc_SyntaxError; |
| PyObject *PyExc_IndentationError; |
| PyObject *PyExc_TabError; |
| PyObject *PyExc_ReferenceError; |
| PyObject *PyExc_SystemError; |
| PyObject *PyExc_SystemExit; |
| PyObject *PyExc_UnboundLocalError; |
| PyObject *PyExc_UnicodeError; |
| PyObject *PyExc_TypeError; |
| PyObject *PyExc_ValueError; |
| PyObject *PyExc_ZeroDivisionError; |
| #ifdef MS_WINDOWS |
| PyObject *PyExc_WindowsError; |
| #endif |
| |
| /* Pre-computed MemoryError instance. Best to create this as early as |
| * possibly and not wait until a MemoryError is actually raised! |
| */ |
| PyObject *PyExc_MemoryErrorInst; |
| |
| /* Predefined warning categories */ |
| PyObject *PyExc_Warning; |
| PyObject *PyExc_UserWarning; |
| PyObject *PyExc_DeprecationWarning; |
| PyObject *PyExc_SyntaxWarning; |
| PyObject *PyExc_OverflowWarning; |
| PyObject *PyExc_RuntimeWarning; |
| |
| |
| |
| /* mapping between exception names and their PyObject ** */ |
| static struct { |
| char *name; |
| PyObject **exc; |
| PyObject **base; /* NULL == PyExc_StandardError */ |
| char *docstr; |
| PyMethodDef *methods; |
| int (*classinit)(PyObject *); |
| } exctable[] = { |
| /* |
| * The first three classes MUST appear in exactly this order |
| */ |
| {"Exception", &PyExc_Exception}, |
| {"StopIteration", &PyExc_StopIteration, &PyExc_Exception, |
| StopIteration__doc__}, |
| {"StandardError", &PyExc_StandardError, &PyExc_Exception, |
| StandardError__doc__}, |
| {"TypeError", &PyExc_TypeError, 0, TypeError__doc__}, |
| /* |
| * The rest appear in depth-first order of the hierarchy |
| */ |
| {"SystemExit", &PyExc_SystemExit, &PyExc_Exception, SystemExit__doc__, |
| SystemExit_methods}, |
| {"KeyboardInterrupt", &PyExc_KeyboardInterrupt, 0, KeyboardInterrupt__doc__}, |
| {"ImportError", &PyExc_ImportError, 0, ImportError__doc__}, |
| {"EnvironmentError", &PyExc_EnvironmentError, 0, EnvironmentError__doc__, |
| EnvironmentError_methods}, |
| {"IOError", &PyExc_IOError, &PyExc_EnvironmentError, IOError__doc__}, |
| {"OSError", &PyExc_OSError, &PyExc_EnvironmentError, OSError__doc__}, |
| #ifdef MS_WINDOWS |
| {"WindowsError", &PyExc_WindowsError, &PyExc_OSError, |
| WindowsError__doc__}, |
| #endif /* MS_WINDOWS */ |
| {"EOFError", &PyExc_EOFError, 0, EOFError__doc__}, |
| {"RuntimeError", &PyExc_RuntimeError, 0, RuntimeError__doc__}, |
| {"NotImplementedError", &PyExc_NotImplementedError, |
| &PyExc_RuntimeError, NotImplementedError__doc__}, |
| {"NameError", &PyExc_NameError, 0, NameError__doc__}, |
| {"UnboundLocalError", &PyExc_UnboundLocalError, &PyExc_NameError, |
| UnboundLocalError__doc__}, |
| {"AttributeError", &PyExc_AttributeError, 0, AttributeError__doc__}, |
| {"SyntaxError", &PyExc_SyntaxError, 0, SyntaxError__doc__, |
| SyntaxError_methods, SyntaxError__classinit__}, |
| {"IndentationError", &PyExc_IndentationError, &PyExc_SyntaxError, |
| IndentationError__doc__}, |
| {"TabError", &PyExc_TabError, &PyExc_IndentationError, |
| TabError__doc__}, |
| {"AssertionError", &PyExc_AssertionError, 0, AssertionError__doc__}, |
| {"LookupError", &PyExc_LookupError, 0, LookupError__doc__}, |
| {"IndexError", &PyExc_IndexError, &PyExc_LookupError, |
| IndexError__doc__}, |
| {"KeyError", &PyExc_KeyError, &PyExc_LookupError, |
| KeyError__doc__}, |
| {"ArithmeticError", &PyExc_ArithmeticError, 0, ArithmeticError__doc__}, |
| {"OverflowError", &PyExc_OverflowError, &PyExc_ArithmeticError, |
| OverflowError__doc__}, |
| {"ZeroDivisionError", &PyExc_ZeroDivisionError, &PyExc_ArithmeticError, |
| ZeroDivisionError__doc__}, |
| {"FloatingPointError", &PyExc_FloatingPointError, &PyExc_ArithmeticError, |
| FloatingPointError__doc__}, |
| {"ValueError", &PyExc_ValueError, 0, ValueError__doc__}, |
| {"UnicodeError", &PyExc_UnicodeError, &PyExc_ValueError, UnicodeError__doc__}, |
| {"ReferenceError", &PyExc_ReferenceError, 0, ReferenceError__doc__}, |
| {"SystemError", &PyExc_SystemError, 0, SystemError__doc__}, |
| {"MemoryError", &PyExc_MemoryError, 0, MemoryError__doc__}, |
| /* Warning categories */ |
| {"Warning", &PyExc_Warning, &PyExc_Exception, Warning__doc__}, |
| {"UserWarning", &PyExc_UserWarning, &PyExc_Warning, UserWarning__doc__}, |
| {"DeprecationWarning", &PyExc_DeprecationWarning, &PyExc_Warning, |
| DeprecationWarning__doc__}, |
| {"SyntaxWarning", &PyExc_SyntaxWarning, &PyExc_Warning, SyntaxWarning__doc__}, |
| {"OverflowWarning", &PyExc_OverflowWarning, &PyExc_Warning, |
| OverflowWarning__doc__}, |
| {"RuntimeWarning", &PyExc_RuntimeWarning, &PyExc_Warning, |
| RuntimeWarning__doc__}, |
| /* Sentinel */ |
| {NULL} |
| }; |
| |
| |
| |
| DL_EXPORT(void) |
| _PyExc_Init(void) |
| { |
| char *modulename = "exceptions"; |
| int modnamesz = strlen(modulename); |
| int i; |
| PyObject *me, *mydict, *bltinmod, *bdict, *doc, *args; |
| |
| me = Py_InitModule(modulename, functions); |
| if (me == NULL) |
| goto err; |
| mydict = PyModule_GetDict(me); |
| if (mydict == NULL) |
| goto err; |
| bltinmod = PyImport_ImportModule("__builtin__"); |
| if (bltinmod == NULL) |
| goto err; |
| bdict = PyModule_GetDict(bltinmod); |
| if (bdict == NULL) |
| goto err; |
| doc = PyString_FromString(module__doc__); |
| if (doc == NULL) |
| goto err; |
| |
| i = PyDict_SetItemString(mydict, "__doc__", doc); |
| Py_DECREF(doc); |
| if (i < 0) { |
| err: |
| Py_FatalError("exceptions bootstrapping error."); |
| return; |
| } |
| |
| /* This is the base class of all exceptions, so make it first. */ |
| if (make_Exception(modulename) || |
| PyDict_SetItemString(mydict, "Exception", PyExc_Exception) || |
| PyDict_SetItemString(bdict, "Exception", PyExc_Exception)) |
| { |
| Py_FatalError("Base class `Exception' could not be created."); |
| } |
| |
| /* Now we can programmatically create all the remaining exceptions. |
| * Remember to start the loop at 1 to skip Exceptions. |
| */ |
| for (i=1; exctable[i].name; i++) { |
| int status; |
| char *cname = PyMem_NEW(char, modnamesz+strlen(exctable[i].name)+2); |
| PyObject *base; |
| |
| (void)strcpy(cname, modulename); |
| (void)strcat(cname, "."); |
| (void)strcat(cname, exctable[i].name); |
| |
| if (exctable[i].base == 0) |
| base = PyExc_StandardError; |
| else |
| base = *exctable[i].base; |
| |
| status = make_class(exctable[i].exc, base, cname, |
| exctable[i].methods, |
| exctable[i].docstr); |
| |
| PyMem_DEL(cname); |
| |
| if (status) |
| Py_FatalError("Standard exception classes could not be created."); |
| |
| if (exctable[i].classinit) { |
| status = (*exctable[i].classinit)(*exctable[i].exc); |
| if (status) |
| Py_FatalError("An exception class could not be initialized."); |
| } |
| |
| /* Now insert the class into both this module and the __builtin__ |
| * module. |
| */ |
| if (PyDict_SetItemString(mydict, exctable[i].name, *exctable[i].exc) || |
| PyDict_SetItemString(bdict, exctable[i].name, *exctable[i].exc)) |
| { |
| Py_FatalError("Module dictionary insertion problem."); |
| } |
| } |
| |
| /* Now we need to pre-allocate a MemoryError instance */ |
| args = Py_BuildValue("()"); |
| if (!args || |
| !(PyExc_MemoryErrorInst = PyEval_CallObject(PyExc_MemoryError, args))) |
| { |
| Py_FatalError("Cannot pre-allocate MemoryError instance\n"); |
| } |
| Py_DECREF(args); |
| |
| /* We're done with __builtin__ */ |
| Py_DECREF(bltinmod); |
| } |
| |
| |
| DL_EXPORT(void) |
| _PyExc_Fini(void) |
| { |
| int i; |
| |
| Py_XDECREF(PyExc_MemoryErrorInst); |
| PyExc_MemoryErrorInst = NULL; |
| |
| for (i=0; exctable[i].name; i++) { |
| /* clear the class's dictionary, freeing up circular references |
| * between the class and its methods. |
| */ |
| PyObject* cdict = PyObject_GetAttrString(*exctable[i].exc, "__dict__"); |
| PyDict_Clear(cdict); |
| Py_DECREF(cdict); |
| |
| /* Now decref the exception class */ |
| Py_XDECREF(*exctable[i].exc); |
| *exctable[i].exc = NULL; |
| } |
| } |