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#include "Uid.hpp"
#include "RapidJsonHelper.hpp"
#include <rapidjson/document.h>
#include <cstring>
#include <random>
Uid Uid::Create() {
std::random_device rd;
std::mt19937_64 gen(rd());
std::uniform_int_distribution<uint64_t> dist(
std::numeric_limits<uint64_t>::min(),
std::numeric_limits<uint64_t>::max());
Uid uid;
uid.upper = dist(gen);
uid.lower = dist(gen);
return uid;
}
bool Uid::IsNull() const {
return upper == 0 && lower == 0;
}
void Uid::ReadString(std::string_view str) {
sscanf(str.data(), BRUSSEL_Uid_SCAN_STR, &upper, &lower);
}
std::string Uid::WriteString() {
char buf[256];
snprintf(buf, sizeof(buf), BRUSSEL_Uid_FORMAT_STR, upper, lower);
return std::string(buf);
}
void Uid::Read(const rapidjson::Value& value) {
if (value.IsString()) {
ReadString(rapidjson::AsStringView(value));
} else if (value.IsArray()) {
// Compatibility support
assert(value.Size() == 2);
auto& upper = value[0];
assert(upper.IsUint64());
auto& lower = value[1];
assert(lower.IsUint64());
this->upper = upper.GetUint64();
this->lower = lower.GetUint64();
} else {
assert(false);
}
}
void Uid::WriteInto(rapidjson::Value& value, rapidjson::Document& root) const {
#if BRUSSEL_Uid_WRITE_USE_ARRAY
value.Reserve(2, root.GetAllocator());
value.PushBack((uint64_t)upper, root.GetAllocator());
value.PushBack((uint64_t)lower, root.GetAllocator());
#else
char buf[256];
int len = snprintf(buf, sizeof(buf), BRUSSEL_Uid_FORMAT_STR, upper, lower);
value.SetString(buf, len, root.GetAllocator());
#endif
}
rapidjson::Value Uid::Write(rapidjson::Document& root) const {
rapidjson::Value result(rapidjson::kArrayType);
WriteInto(result, root);
return result;
}
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