comparison mercurial/cext/revlog.c @ 40861:b12700dd261f

revlog: add public CPython function to get parent revisions

Since this is a public function, it validates the input revision, and supports
nullrev. index_get_parents_checked() will be replaced by this function.

40860:18a8def6e1b5

	if (ps[0] < -1 || ps[0] > maxrev || ps[1] < -1 || ps[1] > maxrev) {
		PyErr_SetString(PyExc_ValueError, "parent out of range");
		return -1;
	}
	return 0;
}

static inline int64_t index_get_start(indexObject *self, Py_ssize_t rev)
{
	uint64_t offset;

40861:b12700dd261f

	if (ps[0] < -1 || ps[0] > maxrev || ps[1] < -1 || ps[1] > maxrev) {
		PyErr_SetString(PyExc_ValueError, "parent out of range");
		return -1;
	}
	return 0;
}

/*
 * Get parents of the given rev.
 *
 * If the specified rev is out of range, IndexError will be raised. If the
 * revlog entry is corrupted, ValueError may be raised.
 *
 * Returns 0 on success or -1 on failure.
 */
int HgRevlogIndex_GetParents(PyObject *op, int rev, int *ps)
{
	int tiprev;
	if (!op || !HgRevlogIndex_Check(op) || !ps) {
		PyErr_BadInternalCall();
		return -1;
	}
	tiprev = (int)index_length((indexObject *)op) - 1;
	if (rev < -1 || rev > tiprev) {
		PyErr_Format(PyExc_IndexError, "rev out of range: %d", rev);
		return -1;
	} else if (rev == -1) {
		ps[0] = ps[1] = -1;
		return 0;
	} else {
		return index_get_parents((indexObject *)op, rev, ps, tiprev);
	}
}

static inline int64_t index_get_start(indexObject *self, Py_ssize_t rev)
{
	uint64_t offset;