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/***************************************************************************************************
Copyright (C) 2023 The Qt Company Ltd.
SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
***************************************************************************************************/
#pragma once
#include "qdotnetobject.h"
#ifdef __GNUC__
# pragma GCC diagnostic push
# pragma GCC diagnostic ignored "-Wconversion"
#endif
#include <QString>
#include <QRegularExpression>
#ifdef __GNUC__
# pragma GCC diagnostic pop
#endif
template <typename T, std::enable_if_t<
std::is_fundamental_v<T>
|| std::is_same_v<T, QString>
|| std::is_base_of_v<QDotNetRef, T>, bool> = true>
class QDotNetArray : public QDotNetObject
{
class Element;
static QString arrayOf(const QString& typeName)
{
const auto idx = typeName.indexOf(QRegularExpression(",|$"));
return QString("%1[]%2").arg(typeName.left(idx)).arg(typeName.mid(idx));
}
public:
Q_DOTNET_OBJECT_INLINE(QDotNetArray, arrayOf(QDotNetTypeOf<T>::TypeName));
QDotNetArray(qint32 length)
{
const QString elementTypeName = QDotNetTypeOf<T>::TypeName;
const QDotNetType elementType = QDotNetType::typeOf(elementTypeName);
QDotNetType arrayType = QDotNetType::typeOf(QDotNetArray::AssemblyQualifiedName);
auto ctor = constructor<QDotNetArray, qint32>();
*this = ctor(length);
}
qint32 length() const
{
return method("get_Length", fnLength).invoke(*this);
}
T get(qint32 idx) const
{
if constexpr (std::is_fundamental_v<T>)
return method("Get", fnGetValue).invoke(*this, idx);
if constexpr (std::is_same_v<T, QString>)
return method("Get", fnGetObject).invoke(*this, idx).toString();
if constexpr (std::is_base_of_v<QDotNetRef, T>)
return method("Get", fnGetObject).invoke(*this, idx).template cast<T>();
throw std::invalid_argument("T");
}
void set(qint32 idx, const T &value)
{
if constexpr (std::is_same_v<T, QString>) {
if (!fnSetString.isValid()) {
QDotNetFunction<void, qint32, QDotNetObject> const func = adapter()
.resolveInstanceMethod(*this, "Set",
{ UnmanagedType::Void, UnmanagedType::I4, QDotNetParameter::String });
fnSetString = func;
}
return method("Set", fnSet).invoke(*this, idx, value);
}
return method("Set", fnSet).invoke(*this, idx, value);
}
Element operator[](qint32 idx)
{
return Element(this, idx);
}
Element begin()
{
return Element(this, 0);
}
Element end()
{
return Element(this, length());
}
private:
class Element
{
friend class QDotNetArray;
public:
operator T()
{
return value = a->get(idx);
}
T *operator->()
{
value = a->get(idx);
return &value;
}
T &operator*()
{
value = a->get(idx);
return value;
}
Element &operator=(const T &value)
{
a->set(idx, value);
return *this;
}
bool isEnd() const
{
return idx >= a->length();
}
Element &operator++()
{
++idx;
return *this;
}
bool operator !=(const Element &that) const
{
if (isEnd() && that.isEnd())
return false;
return a != that.a || idx != that.idx;
}
private:
Element(QDotNetArray *a, qint32 idx)
: a(a)
, idx(idx)
{}
QDotNetArray* a = nullptr;
qint32 idx;
T value;
};
mutable QDotNetSafeMethod<qint32> fnLength;
mutable QDotNetSafeMethod<T, qint32> fnGetValue;
mutable QDotNetSafeMethod<QDotNetObject, qint32> fnGetObject;
QDotNetSafeMethod<void, qint32, T> fnSet;
QDotNetSafeMethod<void, qint32, QDotNetObject> fnSetString;
};
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