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/*
This file is part of the Grantlee template system.
Copyright (c) 2009,2010 Stephen Kelly <steveire@gmail.com>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either version
2 of the Licence, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <iostream>
class QString {
public:
void operation1()
{
std::cout << "QString operation 1" << std::endl;
}
void operation2()
{
std::cout << "QString operation 2" << std::endl;
}
};
class QVariant
{
public:
QVariant() {}
QVariant(const QString &) {
std::cout << "QVariant::QVariant(QString)" << std::endl;
}
};
class SafeString : public QString
{
public:
operator QVariant() const {
std::cout << "SafeString::operator QVariant()" << std::endl;
return QVariant();
}
};
class WrappingSafeString
{
public:
WrappingSafeString() {}
WrappingSafeString(const QString &) {
std::cout << "WrappingSafeString::WrappingSafeString(QString)" << std::endl;
}
operator QVariant() const {
std::cout << "WrappingSafeString::operator QVariant()" << std::endl;
return QVariant();
}
operator QString() const {
std::cout << "WrappingSafeString::operator QString()" << std::endl;
return QString();
}
};
class WrappingSubclassSafeString
{
public:
WrappingSubclassSafeString() : m_isSafe(false), m_wrappedSubclass(this) {}
WrappingSubclassSafeString(const QString &) : m_isSafe(false), m_wrappedSubclass(this) {
std::cout << "WrappingSubclassSafeString::WrappingSubclassSafeString(QString)" << std::endl;
}
bool isSafe() const { return m_isSafe; };
void setSafe(bool safe) { m_isSafe = safe; }
class Subclass : public QString
{
friend class WrappingSubclassSafeString;
Subclass(WrappingSubclassSafeString *wsss) : m_wsss(wsss) {}
WrappingSubclassSafeString *m_wsss;
public:
void operation2()
{
m_wsss->m_isSafe = false;
std::cout << "overridden string operation 2 (wrapping)" << std::endl;
}
};
Subclass m_wrappedSubclass;
Subclass* operator->()
{
return &m_wrappedSubclass;
}
operator QVariant() const {
std::cout << "WrappingSubclassSafeString::operator QVariant()" << std::endl;
return QVariant();
}
operator QString() const {
std::cout << "WrappingSubclassSafeString::operator QString()" << std::endl;
return m_wrappedSubclass;
}
private:
bool m_isSafe;
};
class UsingSafeString : private QString
{
public:
UsingSafeString() {}
UsingSafeString(const QString &) {}
void operation2() {
std::cout << "overridden string operation 2 (using)" << std::endl;
};
using QString::operation1;
operator QVariant()
{
return QVariant();
}
operator QString()
{
return QString();
}
};
QVariant f1() {
return QString();
}
QVariant f2() {
return SafeString();
}
QVariant f3() {
return WrappingSafeString();
}
QString f4() {
return WrappingSafeString();
}
WrappingSafeString f5() {
return QString();
}
QVariant f6() {
return WrappingSubclassSafeString();
}
QString f7() {
return WrappingSubclassSafeString();
}
WrappingSubclassSafeString f8() {
return QString();
}
#ifdef BROKEN
QVariant f9() {
return UsingSafeString();
}
QString f10() {
return UsingSafeString();
}
UsingSafeString f11() {
return QString();
}
#endif
int main(int argc, char ** argv)
{
f1();
f2();
f3();
f4();
f5();
f6();
f7();
f8();
#ifdef BROKEN
f9();
f10();
f11();
#endif
WrappingSubclassSafeString wsss;
wsss.setSafe(true);
wsss->operation1();
std::cout << ( wsss.isSafe() ? "IsSafe" : "IsNotSafe" ) << std::endl;
wsss->operation2();
std::cout << ( wsss.isSafe() ? "IsSafe" : "IsNotSafe" ) << std::endl;
return 0;
}
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