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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#include "config_clang.h"
template <typename Type> class OptValue
{
public:
OptValue()
: maValue()
, mbHasValue(false)
{
}
explicit OptValue(const Type& rValue)
: maValue(rValue)
, mbHasValue(true)
{
}
bool has_value() const { return mbHasValue; }
bool operator!() const { return !mbHasValue; }
const Type& value() const { return maValue; }
const Type& value_or(const Type& rDefValue) const { return mbHasValue ? maValue : rDefValue; }
Type& operator*() { return maValue; }
Type& emplace()
{
mbHasValue = true;
maValue = Type();
return maValue;
}
OptValue& operator=(const Type& rValue)
{
maValue = rValue;
mbHasValue = true;
return *this;
}
bool operator==(const OptValue& rValue) const
{
return ((!mbHasValue && rValue.mbHasValue == false)
|| (mbHasValue == rValue.mbHasValue && maValue == rValue.maValue));
}
private:
Type maValue;
bool mbHasValue;
};
struct AttributeList
{
OptValue<int> getInteger();
};
namespace test1
{
void foo(AttributeList& rAttrs)
{
// expected-error@+1 {{call to OptValue::value() [loplugin:optvalue]}}
rAttrs.getInteger().value();
// no warning expected
OptValue<int> x;
x.value();
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */
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