bool Globals::isHead(ssize_t pos) const {
if (staticSize() > 0) return pos == 0;
if (pos < -1) {
ArrayData *arr = Array::get();
ASSERT(arr);
return !arr->empty() && wrapIter(pos) == arr->iter_begin();
}
return false;
}
bool Globals::isTail(ssize_t pos) const {
ArrayData *arr = Array::get();
if (!arr || arr->empty()) {
return staticSize() > 0 && pos == staticSize() - 1;
}
if (pos < -1) {
return wrapIter(pos) == arr->iter_end();
}
return false;
}
String HHVM_FUNCTION(serialize, const Variant& value) {
switch (value.getType()) {
case KindOfUninit:
case KindOfNull:
return s_Null;
case KindOfBoolean:
return value.getBoolean() ? s_True : s_False;
case KindOfInt64: {
StringBuffer sb;
sb.append("i:");
sb.append(value.getInt64());
sb.append(';');
return sb.detach();
}
case KindOfPersistentString:
case KindOfString: {
StringData *str = value.getStringData();
StringBuffer sb;
sb.append("s:");
sb.append(str->size());
sb.append(":\"");
sb.append(str->data(), str->size());
sb.append("\";");
return sb.detach();
}
case KindOfResource:
return s_Res;
case KindOfPersistentArray:
case KindOfArray: {
ArrayData *arr = value.getArrayData();
if (arr->empty()) {
if (arr->isVecArray()) return s_EmptyVecArray;
if (arr->isDict()) return s_EmptyDictArray;
return s_EmptyArray;
}
// fall-through
}
case KindOfDouble:
case KindOfObject: {
VariableSerializer vs(VariableSerializer::Type::Serialize);
return vs.serialize(value, true);
}
case KindOfRef:
case KindOfClass:
break;
}
not_reached();
}
String f_serialize(const Variant& value) {
switch (value.getType()) {
case KindOfUninit:
case KindOfNull:
return "N;";
case KindOfBoolean:
return value.getBoolean() ? "b:1;" : "b:0;";
case KindOfInt64: {
StringBuffer sb;
sb.append("i:");
sb.append(value.getInt64());
sb.append(';');
return sb.detach();
}
case KindOfStaticString:
case KindOfString: {
StringData *str = value.getStringData();
StringBuffer sb;
sb.append("s:");
sb.append(str->size());
sb.append(":\"");
sb.append(str->data(), str->size());
sb.append("\";");
return sb.detach();
}
case KindOfArray: {
ArrayData *arr = value.getArrayData();
if (arr->empty()) return "a:0:{}";
// fall-through
}
case KindOfObject:
case KindOfResource:
case KindOfDouble: {
VariableSerializer vs(VariableSerializer::Type::Serialize);
return vs.serialize(value, true);
}
default:
assert(false);
break;
}
return "";
}
