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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
****************************************************************************/
#pragma once
#include "smallstringiterator.h"
#include "smallstringlayout.h"
#include "smallstringview.h"
#pragma push_macro("constexpr")
#ifndef __cpp_constexpr
#define constexpr
#endif
#pragma push_macro("noexcept")
#ifndef __cpp_noexcept
#define noexcept
#endif
namespace Utils {
class SmallString;
class SmallStringLiteral
{
friend class SmallString;
public:
using const_iterator = Internal::SmallStringIterator<std::random_access_iterator_tag, const char>;
using const_reverse_iterator = std::reverse_iterator<const_iterator>;
using size_type = std::size_t;
template<size_type Size>
constexpr
SmallStringLiteral(const char(&string)[Size]) noexcept
: m_data(string)
{
static_assert(Size >= 1, "Invalid string literal! Length is zero!");
}
constexpr
SmallStringLiteral(const char *string, const size_type size) noexcept
: m_data(string, size)
{
}
constexpr
const char *data() const
{
return Q_LIKELY(isShortString()) ? m_data.shortString.string : m_data.allocated.data.pointer;
}
constexpr
size_type size() const
{
return Q_LIKELY(isShortString()) ? m_data.shortString.shortStringSize : m_data.allocated.data.size;
}
const_iterator begin() const noexcept
{
return data();
}
const_iterator end() const noexcept
{
return data() + size();
}
const_reverse_iterator rbegin() const noexcept
{
return const_reverse_iterator(end() - static_cast<std::size_t>(1));
}
const_reverse_iterator rend() const noexcept
{
return const_reverse_iterator(begin() - static_cast<std::size_t>(1));
}
constexpr static
size_type shortStringCapacity() noexcept
{
return sizeof(Internal::ShortStringLayout) - 2;
}
constexpr
bool isShortString() const noexcept
{
return !m_data.shortString.isReference;
}
constexpr
bool isReadOnlyReference() const noexcept
{
return m_data.shortString.isReadOnlyReference;
}
operator SmallStringView() const
{
return SmallStringView(data(), size());
}
private:
constexpr SmallStringLiteral(Internal::StringDataLayout data) noexcept
: m_data(data)
{
}
private:
Internal::StringDataLayout m_data;
};
} // namespace Utils
#pragma pop_macro("noexcept")
#pragma pop_macro("constexpr")
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