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//
// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2026
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#pragma once
#include "td/utils/common.h"
#include "td/utils/FlatHashSet.h"
#include "td/utils/misc.h"
#include "td/utils/SharedSlice.h"
#include "td/utils/Slice.h"
#include "td/utils/SliceBuilder.h"
#include "td/utils/Status.h"
#include "td/utils/tl_parsers.h"
#include "td/utils/tl_storers.h"
#include "td/utils/UInt.h"
#include "td/utils/unique_value_ptr.h"
#include "td/utils/Variant.h"
#include <type_traits>
#include <utility>
#define BEGIN_STORE_FLAGS() \
do { \
::td::uint32 flags_store = 0; \
::td::uint32 bit_offset_store = 0
#define STORE_FLAG(flag) \
static_assert(std::is_same<decltype(flag), bool>::value, "flag must be bool"); \
flags_store |= (flag) << bit_offset_store; \
bit_offset_store++
#define END_STORE_FLAGS() \
CHECK(bit_offset_store < 31); \
::td::store(flags_store, storer); \
} \
while (false)
#define BEGIN_PARSE_FLAGS() \
do { \
::td::uint32 flags_parse; \
::td::uint32 bit_offset_parse = 0; \
::td::parse(flags_parse, parser)
#define PARSE_FLAG(flag) \
static_assert(std::is_same<decltype(flag), bool>::value, "flag must be bool"); \
flag = ((flags_parse >> bit_offset_parse) & 1) != 0; \
bit_offset_parse++
#define END_PARSE_FLAGS() \
CHECK(bit_offset_parse < 31); \
if ((flags_parse & ~((1 << bit_offset_parse) - 1)) != 0) { \
parser.set_error(PSTRING() << "Invalid flags " << flags_parse << " left, current bit is " << bit_offset_parse); \
} \
} \
while (false)
namespace td {
template <class StorerT>
void store(bool x, StorerT &storer) {
storer.store_binary(static_cast<int32>(x));
}
template <class ParserT>
void parse(bool &x, ParserT &parser) {
x = parser.fetch_int() != 0;
}
template <class StorerT>
void store(int32 x, StorerT &storer) {
storer.store_binary(x);
}
template <class ParserT>
void parse(int32 &x, ParserT &parser) {
x = parser.fetch_int();
}
template <class StorerT>
void store(uint32 x, StorerT &storer) {
storer.store_binary(x);
}
template <class ParserT>
void parse(uint32 &x, ParserT &parser) {
x = static_cast<uint32>(parser.fetch_int());
}
template <class StorerT>
void store(int64 x, StorerT &storer) {
storer.store_binary(x);
}
template <class ParserT>
void parse(int64 &x, ParserT &parser) {
x = parser.fetch_long();
}
template <class StorerT>
void store(uint64 x, StorerT &storer) {
storer.store_binary(x);
}
template <class ParserT>
void parse(uint64 &x, ParserT &parser) {
x = static_cast<uint64>(parser.fetch_long());
}
template <class StorerT>
void store(UInt256 x, StorerT &storer) {
storer.store_binary(x);
}
template <class ParserT>
void parse(UInt256 &x, ParserT &parser) {
x = parser.template fetch_binary<UInt256>();
}
template <class StorerT>
void store(UInt512 x, StorerT &storer) {
storer.store_binary(x);
}
template <class ParserT>
void parse(UInt512 &x, ParserT &parser) {
x = parser.template fetch_binary<UInt512>();
}
template <class StorerT>
void store(double x, StorerT &storer) {
storer.store_binary(x);
}
template <class ParserT>
void parse(double &x, ParserT &parser) {
x = parser.fetch_double();
}
template <class StorerT>
void store(Slice x, StorerT &storer) {
storer.store_string(x);
}
template <class StorerT>
void store(const string &x, StorerT &storer) {
storer.store_string(x);
}
template <class StorerT>
void store(const SecureString &x, StorerT &storer) {
storer.store_string(x.as_slice());
}
template <class ParserT>
void parse(string &x, ParserT &parser) {
x = parser.template fetch_string<string>();
}
template <class ParserT>
void parse(SecureString &x, ParserT &parser) {
x = parser.template fetch_string<SecureString>();
}
template <class T, class StorerT>
void store(const vector<T> &vec, StorerT &storer) {
storer.store_binary(narrow_cast<int32>(vec.size()));
for (auto &val : vec) {
store(val, storer);
}
}
template <class T, class StorerT>
void store(const vector<T *> &vec, StorerT &storer) {
storer.store_binary(narrow_cast<int32>(vec.size()));
for (auto &val : vec) {
store(*val, storer);
}
}
template <class T, class ParserT>
void parse(vector<T> &vec, ParserT &parser) {
uint32 size = parser.fetch_int();
if (parser.get_left_len() < size) {
parser.set_error("Wrong vector length");
return;
}
vec = vector<T>(size);
for (auto &val : vec) {
parse(val, parser);
}
}
template <class T, class StorerT>
void store(const unique_ptr<T> &ptr, StorerT &storer) {
CHECK(ptr != nullptr);
store(*ptr, storer);
}
template <class T, class ParserT>
void parse(unique_ptr<T> &ptr, ParserT &parser) {
CHECK(ptr == nullptr);
ptr = make_unique<T>();
parse(*ptr, parser);
}
template <class T, class StorerT>
void store(const unique_value_ptr<T> &ptr, StorerT &storer) {
CHECK(ptr != nullptr);
store(*ptr, storer);
}
template <class T, class ParserT>
void parse(unique_value_ptr<T> &ptr, ParserT &parser) {
CHECK(ptr == nullptr);
ptr = make_unique_value<T>();
parse(*ptr, parser);
}
template <class Key, class Hash, class KeyEqual, class StorerT>
void store(const FlatHashSet<Key, Hash, KeyEqual> &s, StorerT &storer) {
storer.store_binary(narrow_cast<int32>(s.size()));
for (auto &val : s) {
store(val, storer);
}
}
template <class Key, class Hash, class KeyEqual, class ParserT>
void parse(FlatHashSet<Key, Hash, KeyEqual> &s, ParserT &parser) {
uint32 size = parser.fetch_int();
if (parser.get_left_len() < size) {
parser.set_error("Wrong set length");
return;
}
s.clear();
for (uint32 i = 0; i < size; i++) {
Key val;
parse(val, parser);
s.insert(std::move(val));
}
}
template <class U, class V, class StorerT>
void store(const std::pair<U, V> &pair, StorerT &storer) {
store(pair.first, storer);
store(pair.second, storer);
}
template <class U, class V, class ParserT>
void parse(std::pair<U, V> &pair, ParserT &parser) {
parse(pair.first, parser);
parse(pair.second, parser);
}
template <class T, class StorerT>
std::enable_if_t<std::is_enum<T>::value> store(const T &val, StorerT &storer) {
store(static_cast<int32>(val), storer);
}
template <class T, class ParserT>
std::enable_if_t<std::is_enum<T>::value> parse(T &val, ParserT &parser) {
int32 result;
parse(result, parser);
val = static_cast<T>(result);
}
template <class T, class StorerT>
std::enable_if_t<!std::is_enum<T>::value> store(const T &val, StorerT &storer) {
val.store(storer);
}
template <class T, class ParserT>
std::enable_if_t<!std::is_enum<T>::value> parse(T &val, ParserT &parser) {
val.parse(parser);
}
template <class... Types, class StorerT>
void store(const Variant<Types...> &variant, StorerT &storer) {
store(variant.get_offset(), storer);
variant.visit([&storer](auto &&value) {
using td::store;
store(value, storer);
});
}
template <class... Types, class ParserT>
void parse(Variant<Types...> &variant, ParserT &parser) {
auto type_offset = parser.fetch_int();
if (type_offset < 0 || type_offset >= static_cast<int32>(sizeof...(Types))) {
return parser.set_error("Invalid type");
}
variant.for_each([type_offset, &parser, &variant](int offset, auto *ptr) {
using T = std::decay_t<decltype(*ptr)>;
if (offset == type_offset) {
variant = T();
parse(variant.template get<T>(), parser);
}
});
}
template <class T>
string serialize(const T &object) {
TlStorerCalcLength calc_length;
store(object, calc_length);
size_t length = calc_length.get_length();
string key(length, '\0');
MutableSlice data = key;
TlStorerUnsafe storer(data.ubegin());
store(object, storer);
CHECK(storer.get_buf() == data.uend());
return key;
}
template <class T>
SecureString serialize_secure(const T &object) {
TlStorerCalcLength calc_length;
store(object, calc_length);
size_t length = calc_length.get_length();
SecureString key(length, '\0');
MutableSlice data = key.as_mutable_slice();
TlStorerUnsafe storer(data.ubegin());
store(object, storer);
CHECK(storer.get_buf() == data.uend());
return key;
}
template <class T>
TD_WARN_UNUSED_RESULT Status unserialize(T &object, Slice data) {
TlParser parser(data);
parse(object, parser);
parser.fetch_end();
return parser.get_status();
}
} // namespace td
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