tdesktop/Telegram/ThirdParty/emoji_suggestions/emoji_suggestions.h

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/*
This file is part of Telegram Desktop,
the official desktop application for the Telegram messaging service.
For license and copyright information please follow this link:
https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
*/
#pragma once
#include <vector>
namespace Ui {
namespace Emoji {
using small = unsigned char;
using medium = unsigned short;
using utf16char = unsigned short;
static_assert(sizeof(utf16char) == 2, "Bad UTF-16 character size.");
class utf16string {
public:
utf16string() = default;
utf16string(const utf16char *data, std::size_t size) : data_(data), size_(size) {
}
utf16string(const utf16string &other) = default;
utf16string &operator=(const utf16string &other) = default;
const utf16char *data() const {
return data_;
}
std::size_t size() const {
return size_;
}
utf16char operator[](int index) const {
return data_[index];
}
private:
const utf16char *data_ = nullptr;
std::size_t size_ = 0;
};
inline bool operator==(utf16string a, utf16string b) {
return (a.size() == b.size()) && (!a.size() || !memcmp(a.data(), b.data(), a.size() * sizeof(utf16char)));
}
namespace internal {
using checksum = unsigned int;
checksum countChecksum(const void *data, std::size_t size);
utf16string GetReplacementEmoji(utf16string replacement);
} // namespace internal
class Suggestion {
public:
Suggestion() = default;
Suggestion(utf16string emoji, utf16string label, utf16string replacement) : emoji_(emoji), label_(label), replacement_(replacement) {
}
Suggestion(const Suggestion &other) = default;
Suggestion &operator=(const Suggestion &other) = default;
utf16string emoji() const {
return emoji_;
}
utf16string label() const {
return label_;
}
utf16string replacement() const {
return replacement_;
}
private:
utf16string emoji_;
utf16string label_;
utf16string replacement_;
};
std::vector<Suggestion> GetSuggestions(utf16string query);
inline utf16string GetSuggestionEmoji(utf16string replacement) {
return internal::GetReplacementEmoji(replacement);
}
int GetSuggestionMaxLength();
} // namespace Emoji
} // namespace Ui