static int ecptxl_1(ec_curve *c, ec *p, PyObject *x)
{
int rc = -1;
- PyObject *y = 0, *z = 0, *t = 0;
+ PyObject *y = 0, *z = 0, *t = 0, *u = 0;
mp *xx = 0;
- int n;
qd_parse qd;
int paren;
} else if (c && (xx = tomp(x)) != 0) {
xx = F_IN(c->f, xx, xx);
if (!EC_FIND(c, p, xx)) VALERR("not on the curve");
- } else if (PySequence_Check(x)) {
- t = x; x = 0;
- n = PySequence_Size(t); if (n < 0) goto end;
- if (n != 2 && n != 3)
- TYERR("want sequence of two or three items");
- if ((x = PySequence_GetItem(t, 0)) == 0 ||
- (y = PySequence_GetItem(t, 1)) == 0 ||
- (n == 3 && (z = PySequence_GetItem(t, 2)) == 0))
- goto end;
- rc = (n == 2) ? ecptxl_2(c, p, x, y) : ecptxl_3(c, p, x, y, z);
+ } else if ((t = PyObject_GetIter(x)) != 0) {
+ Py_DECREF(x);
+ x = PyIter_Next(t); if (!x) goto enditer;
+ y = PyIter_Next(t); if (!y) goto enditer;
+ z = PyIter_Next(t); if (!z && PyErr_Occurred()) goto end;
+ if (z) {
+ u = PyIter_Next(t);
+ if (u) goto enditer;
+ else if (PyErr_Occurred()) goto end;
+ }
+ rc = !z ? ecptxl_2(c, p, x, y) : ecptxl_3(c, p, x, y, z);
goto end;
- } else
+ } else {
+ PyErr_Clear();
TYERR("can't convert to curve point");
+ }
goto ok;
+enditer:
+ if (PyErr_Occurred()) goto end;
+ TYERR("expected sequence of 2 or 3 items");
fix:
if (c) EC_IN(c, p, p);
ok:
rc = 0;
end:
- Py_XDECREF(x); Py_XDECREF(y); Py_XDECREF(z); Py_XDECREF(t);
+ Py_XDECREF(x); Py_XDECREF(y); Py_XDECREF(z); Py_XDECREF(t); Py_XDECREF(u);
mp_drop(xx);
return (rc);
}