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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#pragma once
#include "algorithm.h"
#include "smallstringfwd.h"
#include "smallstringiterator.h"
#include <QString>
#include <cstring>
#include <string>
#include <string_view>
namespace Utils {
template <typename String>
using enable_if_has_char_data_pointer = typename std::enable_if_t<
std::is_same<
std::remove_const_t<
std::remove_pointer_t<
decltype(std::declval<const String>().data())
>
>, char>::value
, int>;
class SmallStringView : public std::string_view
{
public:
using std::string_view::string_view;
template<typename String, typename Utils::enable_if_has_char_data_pointer<String> = 0>
constexpr SmallStringView(const String &string) noexcept
: std::string_view{string.data(), static_cast<std::size_t>(string.size())}
{}
constexpr size_type isEmpty() const noexcept { return empty(); }
operator std::string() const { return std::string(data(), size()); }
explicit operator QString() const { return QString::fromUtf8(data(), int(size())); }
operator QByteArrayView() const { return QByteArrayView(data(), Utils::ssize(*this)); }
explicit operator QByteArray() const { return QByteArrayView{*this}.toByteArray(); }
QByteArray toByteArray() const { return QByteArrayView{*this}.toByteArray(); }
explicit operator QLatin1StringView() const noexcept
{
return QLatin1StringView(data(), Utils::ssize(*this));
}
operator QUtf8StringView() const noexcept
{
return QUtf8StringView(data(), Utils::ssize(*this));
}
};
inline constexpr auto operator<=>(const SmallStringView &first, const SmallStringView &second)
{
return std::string_view{first} <=> std::string_view{second};
}
inline constexpr bool operator==(const SmallStringView &first, const SmallStringView &second)
{
return std::string_view{first} == std::string_view{second};
}
constexpr int compare(SmallStringView first, SmallStringView second) noexcept
{
return first.compare(second);
}
} // namespace Utils
constexpr Utils::SmallStringView operator""_sv(const char *const string, size_t size)
{
return Utils::SmallStringView(string, size);
}
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