195 }

   196 

   197 /*

   198  * Get parents of the given rev.

   199  *

   200  * If the specified rev is out of range, IndexError will be raised. If the

   201  * revlog entry is corrupted, ValueError may be raised.

   202  *

   203  * Returns 0 on success or -1 on failure.

   204  */

   205 int HgRevlogIndex_GetParents(PyObject *op, int rev, int *ps)

   206 {

   207 	int tiprev;

   208 	if (!op || !HgRevlogIndex_Check(op) || !ps) {

   209 		PyErr_BadInternalCall();

   210 		return -1;

   211 	}

   212 	tiprev = (int)index_length((indexObject *)op) - 1;

   213 	if (rev < -1 || rev > tiprev) {

   214 		PyErr_Format(PyExc_IndexError, "rev out of range: %d", rev);

   215 		return -1;

   216 	} else if (rev == -1) {

   217 		ps[0] = ps[1] = -1;

   218 		return 0;

   219 	} else {

   220 		return index_get_parents((indexObject *)op, rev, ps, tiprev);

   221 	}