typename std::enable_if<
std::is_base_of<BaseSet, TSet>::value, Object>::type
BaseSet::php_skip(const Variant& n) {
if (!n.isInteger()) {
SystemLib::throwInvalidArgumentExceptionObject(
"Parameter n must be an integer");
}
int64_t len = n.toInt64();
if (len <= 0) {
// We know the resulting Set will simply be a copy of this Set,
// so we can just call Clone() and return early here.
return Object::attach(TSet::Clone(this));
}
auto set = req::make<TSet>();
if (len >= m_size) {
// We know the resulting Set will be empty, so we can return
// early here.
return Object{std::move(set)};
}
size_t sz = size_t(m_size) - size_t(len);
assert(sz);
set->reserve(sz);
set->setSize(sz);
set->setPosLimit(sz);
uint32_t frPos = nthElmPos(len);
auto table = set->hashTab();
auto mask = set->tableMask();
for (uint32_t toPos = 0; toPos < sz; ++toPos, ++frPos) {
while (isTombstone(frPos)) {
assert(frPos + 1 < posLimit());
++frPos;
}
auto& toE = set->data()[toPos];
dupElm(data()[frPos], toE);
*findForNewInsert(table, mask, toE.probe()) = toPos;
if (toE.hasIntKey()) {
set->updateNextKI(toE.ikey);
} else {
assert(toE.hasStrKey());
set->updateIntLikeStrKeys(toE.skey);
}
}
return Object{std::move(set)};
}
ALWAYS_INLINE
typename std::enable_if<
std::is_base_of<BaseMap, TMap>::value, Object>::type
BaseMap::php_slice(const Variant& start, const Variant& len) {
int64_t istart;
int64_t ilen;
if (!start.isInteger() || (istart = start.toInt64()) < 0) {
SystemLib::throwInvalidArgumentExceptionObject(
"Parameter start must be a non-negative integer");
}
if (!len.isInteger() || (ilen = len.toInt64()) < 0) {
SystemLib::throwInvalidArgumentExceptionObject(
"Parameter len must be a non-negative integer");
}
size_t skipAmt = std::min<size_t>(istart, m_size);
size_t sz = std::min<size_t>(ilen, size_t(m_size) - skipAmt);
auto map = req::make<TMap>();
map->reserve(sz);
map->setSize(sz);
map->setPosLimit(sz);
uint32_t frPos = nthElmPos(skipAmt);
auto table = map->hashTab();
auto mask = map->tableMask();
for (uint32_t toPos = 0; toPos < sz; ++toPos, ++frPos) {
frPos = skipTombstonesNoBoundsCheck(frPos);
auto& toE = map->data()[toPos];
dupElm(data()[frPos], toE);
*findForNewInsert(table, mask, toE.probe()) = toPos;
if (toE.hasIntKey()) {
map->updateNextKI(toE.ikey);
} else {
assert(toE.hasStrKey());
map->updateIntLikeStrKeys(toE.skey);
}
}
return Object{std::move(map)};
}
ALWAYS_INLINE
typename std::enable_if<
std::is_base_of<BaseMap, TMap>::value, Object>::type
BaseMap::php_map(const Variant& callback) const {
VMRegGuard _;
CallCtx ctx;
vm_decode_function(callback, nullptr, false, ctx);
if (!ctx.func) {
SystemLib::throwInvalidArgumentExceptionObject(
"Parameter must be a valid callback");
}
auto map = req::make<TMap>();
if (!m_size) return Object{std::move(map)};
assert(posLimit() != 0);
assert(hashSize() > 0);
assert(map->arrayData() == staticEmptyMixedArray());
map->m_arr = MixedArray::asMixed(MixedArray::MakeReserveMixed(cap()));
map->setIntLikeStrKeys(intLikeStrKeys());
wordcpy(map->hashTab(), hashTab(), hashSize());
{
uint32_t used = posLimit();
int32_t version = m_version;
uint32_t i = 0;
// When the loop below finishes or when an exception is thrown,
// make sure that posLimit() get set to the correct value and
// that m_pos gets set to point to the first element.
SCOPE_EXIT {
map->setPosLimit(i);
map->arrayData()->m_pos = map->nthElmPos(0);
};
constexpr int64_t argc = useKey ? 2 : 1;
TypedValue argv[argc];
for (; i < used; ++i) {
const Elm& e = data()[i];
Elm& ne = map->data()[i];
if (isTombstone(i)) {
ne.data.m_type = e.data.m_type;
continue;
}
TypedValue* tv = &ne.data;
if (useKey) {
if (e.hasIntKey()) {
argv[0].m_type = KindOfInt64;
argv[0].m_data.num = e.ikey;
} else {
argv[0].m_type = KindOfString;
argv[0].m_data.pstr = e.skey;
}
}
argv[argc-1] = e.data;
g_context->invokeFuncFew(tv, ctx, argc, argv);
if (UNLIKELY(version != m_version)) {
tvRefcountedDecRef(tv);
throw_collection_modified();
}
if (e.hasStrKey()) {
e.skey->incRefCount();
}
ne.ikey = e.ikey;
ne.data.hash() = e.data.hash();
map->incSize();
// Needed so that the new elements are accounted for when GC scanning.
map->incPosLimit();
}
}
return Object{std::move(map)};
}