tdlight/td/telegram/DialogFilterId.h
levlam 05e72d2011 Check DialogFilterId againts its min().
GitOrigin-RevId: 396dfde586a96e7db5a635d0c8687237afb28184
2020-05-19 15:10:46 +03:00

74 lines
1.7 KiB
C++

//
// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2020
//
// 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/StringBuilder.h"
#include <functional>
#include <type_traits>
namespace td {
class DialogFilterId {
int32 id = 0;
public:
DialogFilterId() = default;
explicit constexpr DialogFilterId(int32 dialog_filter_id) : id(dialog_filter_id) {
}
template <class T, typename = std::enable_if_t<std::is_convertible<T, int32>::value>>
DialogFilterId(T dialog_filter_id) = delete;
static constexpr DialogFilterId min() {
return DialogFilterId(static_cast<int32>(2));
}
static constexpr DialogFilterId max() {
return DialogFilterId(static_cast<int32>(255));
}
bool is_valid() const {
// don't check max() for greater future flexibility
return id >= min().get();
}
int32 get() const {
return id;
}
bool operator==(const DialogFilterId &other) const {
return id == other.id;
}
bool operator!=(const DialogFilterId &other) const {
return id != other.id;
}
template <class StorerT>
void store(StorerT &storer) const {
storer.store_int(id);
}
template <class ParserT>
void parse(ParserT &parser) {
id = parser.fetch_int();
}
};
struct DialogFilterIdHash {
std::size_t operator()(DialogFilterId dialog_filter_id) const {
return std::hash<int32>()(dialog_filter_id.get());
}
};
inline StringBuilder &operator<<(StringBuilder &string_builder, DialogFilterId dialog_filter_id) {
return string_builder << "chat filter " << dialog_filter_id.get();
}
} // namespace td