extern "C" int PyTuple_SetItem(PyObject* op, Py_ssize_t i, PyObject* newitem) noexcept {
RELEASE_ASSERT(PyTuple_Check(op), "");
BoxedTuple* t = static_cast<BoxedTuple*>(op);
RELEASE_ASSERT(i >= 0 && i < t->size(), "");
t->elts[i] = newitem;
return 0;
}
extern "C" PyObject* PyTuple_GetSlice(PyObject* p, Py_ssize_t low, Py_ssize_t high) noexcept {
RELEASE_ASSERT(isSubclass(p->cls, tuple_cls), "");
BoxedTuple* t = static_cast<BoxedTuple*>(p);
Py_ssize_t n = t->size();
if (low < 0)
low = 0;
if (high > n)
high = n;
if (high < low)
high = low;
if (low == 0 && high == n)
return p;
return BoxedTuple::create(high - low, &t->elts[low]);
}
int BoxedTuple::Resize(BoxedTuple** pv, size_t newsize) noexcept {
assert((*pv)->cls == tuple_cls);
BoxedTuple* t = static_cast<BoxedTuple*>(*pv);
if (newsize == t->size())
return 0;
if (newsize < t->size()) {
// XXX resize the box (by reallocating) smaller if it makes sense
t->ob_size = newsize;
return 0;
}
BoxedTuple* resized = new (newsize) BoxedTuple();
memmove(resized->elts, t->elts, sizeof(Box*) * t->size());
*pv = resized;
return 0;
}
void BoxedTuple::gcHandler(GCVisitor* v, Box* b) {
Box::gcHandler(v, b);
BoxedTuple* t = (BoxedTuple*)b;
v->visitRange((void* const*)&t->elts[0], (void* const*)&t->elts[t->size()]);
}
