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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 "qdotnetexception.h"
#ifdef __GNUC__
# pragma GCC diagnostic push
# pragma GCC diagnostic ignored "-Wconversion"
#endif
#include <QList>
#ifdef __GNUC__
# pragma GCC diagnostic pop
#endif
template<typename T, typename... TArg>
class QDotNetSafeMethod
{
using FuncType = QDotNetFunction<T, TArg...>;
using SafeFuncType = QDotNetFunction<QDotNetRef, QDotNetRef, TArg...>;
public:
QDotNetSafeMethod() = default;
QDotNetSafeMethod(FuncType func)
: func(func)
{
const QList<QDotNetParameter> parameters
{
QDotNetInbound<QDotNetRef>::Parameter,
QDotNetOutbound<QDotNetRef>::Parameter,
QDotNetOutbound<TArg>::Parameter...
};
safeFunc = QDotNetAdapter::instance().resolveSafeMethod(func.ptr(), parameters);
}
bool isValid() const { return func.isValid(); }
class SafeReturn : public QDotNetRef
{
public:
SafeReturn(const void *objectRef = nullptr)
: QDotNetRef(objectRef)
{}
SafeReturn(const SafeReturn &cpySrc)
: QDotNetRef(cpySrc)
{}
SafeReturn(SafeReturn &&movSrc) noexcept
: QDotNetRef(std::move(movSrc))
{}
T value() const
{
if (!fnValue.isValid()) {
fnValue = adapter().resolveInstanceMethod(
*this, "get_Value", { QDotNetInbound<T>::Parameter });
}
return fnValue();
}
QDotNetException exception() const
{
if (!fnException.isValid()) {
fnException = adapter().resolveInstanceMethod(
*this, "get_Exception", { QDotNetInbound<QDotNetException>::Parameter });
}
return fnException();
}
private:
mutable QDotNetFunction<T> fnValue = nullptr;
mutable QDotNetFunction<QDotNetException> fnException = nullptr;
};
typename QDotNetInbound<T>::TargetType invoke(QDotNetOutbound<QDotNetRef>::SourceType obj,
typename QDotNetOutbound<TArg>::SourceType... arg) const
{
SafeReturn safeReturn = safeFunc(obj, arg...).template cast<SafeReturn>();
QDotNetException exception = safeReturn.exception();
if (!exception.isValid())
return safeReturn.value();
throw exception;
}
typename QDotNetInbound<T>::TargetType invoke(nullptr_t nullObj,
typename QDotNetOutbound<TArg>::SourceType... arg) const
{
SafeReturn safeReturn = safeFunc(nullObj, arg...).template cast<SafeReturn>();
QDotNetException exception = safeReturn.exception();
if (!exception.isValid())
return safeReturn.value();
throw exception;
}
private:
FuncType func = nullptr;
SafeFuncType safeFunc = nullptr;
};
template<typename... TArg>
class QDotNetSafeMethod<void, TArg...>
{
using FuncType = QDotNetFunction<void, TArg...>;
using SafeFuncType = QDotNetFunction<QDotNetRef, QDotNetRef, TArg...>;
public:
QDotNetSafeMethod() = default;
QDotNetSafeMethod(FuncType func)
: func(func)
{
const QList<QDotNetParameter> parameters
{
QDotNetInbound<QDotNetRef>::Parameter,
QDotNetOutbound<QDotNetRef>::Parameter,
QDotNetOutbound<TArg>::Parameter...
};
safeFunc = QDotNetAdapter::instance().resolveSafeMethod(func.ptr(), parameters);
}
bool isValid() const { return func.isValid(); }
class SafeReturn : public QDotNetRef
{
public:
SafeReturn(const void *objectRef = nullptr)
: QDotNetRef(objectRef)
{}
SafeReturn(const SafeReturn &cpySrc)
: QDotNetRef(cpySrc)
{}
SafeReturn(SafeReturn &&movSrc) noexcept
: QDotNetRef(std::move(movSrc))
{}
QDotNetException exception() const
{
if (!fnException.isValid()) {
fnException = QDotNetAdapter::instance().resolveInstanceMethod(
*this, "get_Exception", { QDotNetInbound<QDotNetException>::Parameter });
}
return fnException();
}
private:
mutable QDotNetFunction<QDotNetException> fnException = nullptr;
};
void invoke(QDotNetOutbound<QDotNetRef>::SourceType obj,
typename QDotNetOutbound<TArg>::SourceType... arg) const
{
SafeReturn safeReturn = safeFunc(obj, arg...).template cast<SafeReturn>();
QDotNetException exception = safeReturn.exception();
if (exception.isValid())
throw exception;
}
void invoke(nullptr_t nullObj, typename QDotNetOutbound<TArg>::SourceType... arg) const
{
SafeReturn safeReturn = safeFunc(nullObj, arg...).template cast<SafeReturn>();
QDotNetException exception = safeReturn.exception();
if (exception.isValid())
throw exception;
}
private:
FuncType func = nullptr;
SafeFuncType safeFunc = nullptr;
};
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