bool ArrayData::hasInternalReference(PointerSet &vars,
bool ds /* = false */) const {
if (isSharedMap()) return false;
for (ArrayIter iter(this); iter; ++iter) {
CVarRef var = iter.secondRef();
if (var.isReferenced()) {
Variant *pvar = var.getRefData();
if (vars.find(pvar) != vars.end()) {
return true;
}
vars.insert(pvar);
}
if (var.isObject()) {
ObjectData *pobj = var.getObjectData();
if (vars.find(pobj) != vars.end()) {
return true;
}
vars.insert(pobj);
if (ds && pobj->o_instanceof("Serializable")) {
return true;
}
if (pobj->hasInternalReference(vars, ds)) {
return true;
}
} else if (var.isArray() &&
var.getArrayData()->hasInternalReference(vars, ds)) {
return true;
}
}
return false;
}
bool ArrayData::hasInternalReference(PointerSet &vars) const {
if (supportValueRef()) {
for (ArrayIter iter(this); iter; ++iter) {
CVarRef var = iter.secondRef();
if (var.isReferenced()) {
Variant *pvar = var.getVariantData();
if (vars.find(pvar) != vars.end()) {
return true;
}
vars.insert(pvar);
}
if (var.isObject()) {
ObjectData *pobj = var.getObjectData();
if (vars.find(pobj) != vars.end()) {
return true;
}
vars.insert(pobj);
if (pobj->o_toArray().get()->hasInternalReference(vars)) {
return true;
}
} else if (var.isArray() &&
var.getArrayData()->hasInternalReference(vars)) {
return true;
}
}
}
return false;
}
static void php_array_replace_recursive(PointerSet &seen, bool check,
Array &arr1, CArrRef arr2) {
if (check) {
if (seen.find((void*)arr1.get()) != seen.end()) {
raise_warning("array_replace_recursive(): recursion detected");
return;
}
seen.insert((void*)arr1.get());
}
for (ArrayIter iter(arr2); iter; ++iter) {
Variant key = iter.first();
CVarRef value = iter.secondRef();
if (arr1.exists(key, true) && value.isArray()) {
Variant &v = arr1.lvalAt(key, AccessFlags::Key);
if (v.isArray()) {
Array subarr1 = v.toArray();
const ArrNR& arr_value = value.toArrNR();
php_array_replace_recursive(seen, v.isReferenced(), subarr1,
arr_value);
v = subarr1;
} else {
arr1.set(key, value, true);
}
} else {
arr1.lvalAt(key, AccessFlags::Key).setWithRef(value);
}
}
if (check) {
seen.erase((void*)arr1.get());
}
}
static void php_array_merge_recursive(PointerSet &seen, bool check,
Array &arr1, CArrRef arr2) {
if (check) {
if (seen.find((void*)arr1.get()) != seen.end()) {
raise_warning("array_merge_recursive(): recursion detected");
return;
}
seen.insert((void*)arr1.get());
}
for (ArrayIter iter(arr2); iter; ++iter) {
Variant key(iter.first());
CVarRef value(iter.secondRef());
if (key.isNumeric()) {
arr1.appendWithRef(value);
} else if (arr1.exists(key, true)) {
// There is no need to do toKey() conversion, for a key that is already
// in the array.
Variant &v = arr1.lvalAt(key, AccessFlags::Key);
Array subarr1(v.toArray()->copy());
php_array_merge_recursive(seen, v.isReferenced(), subarr1,
value.toArray());
v.unset(); // avoid contamination of the value that was strongly bound
v = subarr1;
} else {
arr1.addLval(key, true).setWithRef(value);
}
}
if (check) {
seen.erase((void*)arr1.get());
}
}
inline bool DataWalker::markVisited(
void* pvar,
DataFeature& features,
PointerSet& visited) const {
if (!visited.insert(pvar).second) {
features.isCircular = true;
return true;
}
return false;
}
inline
bool DataWalker::markVisited(
void* pvar,
DataFeature& features,
PointerSet& visited) const {
if (visited.find(pvar) != visited.end()) {
features.m_circular = true;
return true;
}
visited.insert(pvar);
return false;
}
bool ArrayData::hasInternalReference(PointerSet &vars,
bool ds /* = false */) const {
if (isSharedMap()) return false;
for (ArrayIter iter(this); iter; ++iter) {
CVarRef var = iter.secondRef();
if (var.isReferenced()) {
Variant *pvar = var.getVariantData();
if (vars.find(pvar) != vars.end()) {
return true;
}
vars.insert(pvar);
}
if (var.isObject()) {
ObjectData *pobj = var.getObjectData();
if (vars.find(pobj) != vars.end()) {
return true;
}
vars.insert(pobj);
if (pobj->o_instanceof("Serializable")) {
if (ds) {
// We want to detect Serializable object as well
return true;
} else {
// Serializable object does not have internal reference issue
return false;
}
}
if (pobj->o_toArray().get()->hasInternalReference(vars, ds)) {
return true;
}
} else if (var.isArray() &&
var.getArrayData()->hasInternalReference(vars, ds)) {
return true;
}
}
return false;
}
APCHandle* APCObject::MakeShared(
ObjectData* objectData, size_t& size, bool inner, bool createFromSer) {
if (!canOptimize(objectData)) {
return createFromSer ? MakeShared(apc_serialize(objectData), size) :
nullptr;
}
if (objectData->isCollection()) {
return APCCollection::MakeShared(objectData, size, inner);
}
bool serialize = false;
if (!inner) {
PointerSet visited;
visited.insert(reinterpret_cast<void*>(objectData));
traverseDataRecursive(objectData,
[&](const Variant& var) {
if (var.isReferenced()) {
Variant *pvar = var.getRefData();
if (chekVisited(visited, pvar)) {
serialize = true;
return true;
}
}
DataType type = var.getType();
if (type == KindOfObject) {
auto data = var.getObjectData();
if (chekVisited(visited, reinterpret_cast<void*>(data))) {
serialize = true;
return true;
}
} else if (type == KindOfResource) {
serialize = true;
return true;
}
return false;
}
);
}
if (serialize) {
return createFromSer ? MakeShared(apc_serialize(objectData), size) :
nullptr;
}
return Construct(objectData, size);
}