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// Copyright (C) 2016 The Qt Company Ltd.
// Copyright (C) 2016 Intel Corporation.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QJSON_P_H
#define QJSON_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <qjsonvalue.h>
#include <qcborvalue.h>
#include <private/qcborvalue_p.h>
#if QT_VERSION < QT_VERSION_CHECK(7, 0, 0) && !defined(QT_BOOTSTRAPPED)
# include <qjsonarray.h>
# include <qjsonobject.h>
#endif
QT_BEGIN_NAMESPACE
namespace QJsonPrivate {
template<typename Element, typename ElementsIterator>
struct ObjectIterator
{
using pointer = Element *;
struct value_type;
struct reference {
reference(Element &ref) : m_key(&ref) {}
reference() = delete;
~reference() = default;
reference(const reference &other) = default;
reference(reference &&other) = default;
reference &operator=(const value_type &value);
reference &operator=(const reference &other)
{
if (m_key != other.m_key) {
key() = other.key();
value() = other.value();
}
return *this;
}
reference &operator=(reference &&other)
{
key() = other.key();
value() = other.value();
return *this;
}
Element &key() { return *m_key; }
Element &value() { return *(m_key + 1); }
const Element &key() const { return *m_key; }
const Element &value() const { return *(m_key + 1); }
private:
Element *m_key;
};
struct value_type {
value_type(reference ref) : m_key(ref.key()), m_value(ref.value()) {}
Element key() const { return m_key; }
Element value() const { return m_value; }
private:
Element m_key;
Element m_value;
};
using difference_type = typename QList<Element>::difference_type;
using iterator_category = std::random_access_iterator_tag;
ObjectIterator() = default;
ObjectIterator(ElementsIterator it) : it(it) {}
ElementsIterator elementsIterator() { return it; }
ObjectIterator operator++(int) { ObjectIterator ret(it); it += 2; return ret; }
ObjectIterator &operator++() { it += 2; return *this; }
ObjectIterator &operator+=(difference_type n) { it += 2 * n; return *this; }
ObjectIterator operator--(int) { ObjectIterator ret(it); it -= 2; return ret; }
ObjectIterator &operator--() { it -= 2; return *this; }
ObjectIterator &operator-=(difference_type n) { it -= 2 * n; return *this; }
reference operator*() const { return *it; }
reference operator[](qsizetype n) const { return it[n * 2]; }
bool operator<(ObjectIterator other) const { return it < other.it; }
bool operator>(ObjectIterator other) const { return it > other.it; }
bool operator<=(ObjectIterator other) const { return it <= other.it; }
bool operator>=(ObjectIterator other) const { return it >= other.it; }
ElementsIterator it;
};
template<typename Element, typename ElementsIterator>
inline ObjectIterator<Element, ElementsIterator> operator+(
ObjectIterator<Element, ElementsIterator> a,
typename ObjectIterator<Element, ElementsIterator>::difference_type n)
{
return {a.elementsIterator() + 2 * n};
}
template<typename Element, typename ElementsIterator>
inline ObjectIterator<Element, ElementsIterator> operator+(
qsizetype n, ObjectIterator<Element, ElementsIterator> a)
{
return {a.elementsIterator() + 2 * n};
}
template<typename Element, typename ElementsIterator>
inline ObjectIterator<Element, ElementsIterator> operator-(
ObjectIterator<Element, ElementsIterator> a,
typename ObjectIterator<Element, ElementsIterator>::difference_type n)
{
return {a.elementsIterator() - 2 * n};
}
template<typename Element, typename ElementsIterator>
inline qsizetype operator-(
ObjectIterator<Element, ElementsIterator> a,
ObjectIterator<Element, ElementsIterator> b)
{
return (a.elementsIterator() - b.elementsIterator()) / 2;
}
template<typename Element, typename ElementsIterator>
inline bool operator!=(
ObjectIterator<Element, ElementsIterator> a,
ObjectIterator<Element, ElementsIterator> b)
{
return a.elementsIterator() != b.elementsIterator();
}
template<typename Element, typename ElementsIterator>
inline bool operator==(
ObjectIterator<Element, ElementsIterator> a,
ObjectIterator<Element, ElementsIterator> b)
{
return a.elementsIterator() == b.elementsIterator();
}
using KeyIterator = ObjectIterator<QtCbor::Element, QList<QtCbor::Element>::iterator>;
using ConstKeyIterator = ObjectIterator<const QtCbor::Element, QList<QtCbor::Element>::const_iterator>;
template<>
inline KeyIterator::reference &KeyIterator::reference::operator=(const KeyIterator::value_type &value)
{
*m_key = value.key();
*(m_key + 1) = value.value();
return *this;
}
inline void swap(KeyIterator::reference a, KeyIterator::reference b)
{
KeyIterator::value_type t = a;
a = b;
b = t;
}
class Value
{
public:
static qint64 valueHelper(const QCborValue &v) { return v.n; }
static QCborContainerPrivate *container(const QCborValue &v) { return v.container; }
static const QCborContainerPrivate *container(QJsonValueConstRef r) noexcept
{
#if QT_VERSION < QT_VERSION_CHECK(7, 0, 0) && !defined(QT_BOOTSTRAPPED)
return (r.is_object ? r.o->o : r.a->a).data();
#else
return r.d;
#endif
}
static QCborContainerPrivate *container(QJsonValueRef r) noexcept
{
return const_cast<QCborContainerPrivate *>(container(QJsonValueConstRef(r)));
}
static qsizetype indexHelper(QJsonValueConstRef r) noexcept
{
qsizetype index = r.index;
if (r.is_object)
index = index * 2 + 1;
return index;
}
static const QtCbor::Element &elementHelper(QJsonValueConstRef r) noexcept
{
return container(r)->elements.at(indexHelper(r));
}
static QJsonValue fromTrustedCbor(const QCborValue &v)
{
QJsonValue result;
result.value = v;
return result;
}
};
class Variant
{
public:
static QJsonObject toJsonObject(const QVariantMap &map);
static QJsonArray toJsonArray(const QVariantList &list);
};
} // namespace QJsonPrivate
QT_END_NAMESPACE
#endif // QJSON_P_H
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