python27/guestbook/jinja2/_debugsupport.c

   1 /**
   2  * jinja2._debugsupport
   3  * ~~~~~~~~~~~~~~~~~~~~
   4  *
   5  * C implementation of `tb_set_next`.
   6  *
   7  * :copyright: (c) 2010 by the Jinja Team.
   8  * :license: BSD.
   9  */
  10
  11 #include <Python.h>
  12
  13
  14 static PyObject*
  15 tb_set_next(PyObject *self, PyObject *args)
  16 {
  17         PyTracebackObject *tb, *old;
  18         PyObject *next;
  19
  20         if (!PyArg_ParseTuple(args, "O!O:tb_set_next", &PyTraceBack_Type, &tb, &next))
  21                 return NULL;
  22         if (next == Py_None)
  23                 next = NULL;
  24         else if (!PyTraceBack_Check(next)) {
  25                 PyErr_SetString(PyExc_TypeError,
  26                                 "tb_set_next arg 2 must be traceback or None");
  27                 return NULL;
  28         }
  29         else
  30                 Py_INCREF(next);
  31
  32         old = tb->tb_next;
  33         tb->tb_next = (PyTracebackObject*)next;
  34         Py_XDECREF(old);
  35
  36         Py_INCREF(Py_None);
  37         return Py_None;
  38 }
  39
  40 static PyMethodDef module_methods[] = {
  41         {"tb_set_next", (PyCFunction)tb_set_next, METH_VARARGS,
  42          "Set the tb_next member of a traceback object."},
  43         {NULL, NULL, 0, NULL}           /* Sentinel */
  44 };
  45
  46
  47 #if PY_MAJOR_VERSION < 3
  48
  49 #ifndef PyMODINIT_FUNC  /* declarations for DLL import/export */
  50 #define PyMODINIT_FUNC void
  51 #endif
  52 PyMODINIT_FUNC
  53 init_debugsupport(void)
  54 {
  55         Py_InitModule3("jinja2._debugsupport", module_methods, "");
  56 }
  57
  58 #else /* Python 3.x module initialization */
  59
  60 static struct PyModuleDef module_definition = {
  61         PyModuleDef_HEAD_INIT,
  62         "jinja2._debugsupport",
  63         NULL,
  64         -1,
  65         module_methods,
  66         NULL,
  67         NULL,
  68         NULL,
  69         NULL
  70 };
  71
  72 PyMODINIT_FUNC
  73 PyInit__debugsupport(void)
  74 {
  75         return PyModule_Create(&module_definition);
  76 }
  77
  78 #endif