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Utils: Converter to raw pointer and references

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Sometimes you want to get raw pointer container from smart pointer
container and reference container from value container.

Change-Id: Ia018d572ac0a7bf742f3937dc38ee30670a3ca73
Reviewed-by: Eike Ziller <eike.ziller@qt.io>
This commit is contained in:
Marco Bubke
2017-11-28 17:58:24 +01:00
committed by Eike Ziller
parent 60fb35a23c
commit 91e40e12db
2 changed files with 110 additions and 0 deletions
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53
tests/auto/algorithm/tst_algorithm.cpp
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@@ -46,6 +46,8 @@ private slots:
void contains();
void findOr();
void findOrDefault();
void toRawPointer();
void toReferences();
};
@@ -462,6 +464,57 @@ void tst_Algorithm::findOrDefault()
QCOMPARE(Utils::findOrDefault(v4, &Struct::isEven), std::shared_ptr<Struct>());
}
void tst_Algorithm::toRawPointer()
{
const std::vector<std::unique_ptr<Struct>> v;
// same result container
const std::vector<Struct *> x1 = Utils::toRawPointer(v);
// different result container
const std::vector<Struct *> x2 = Utils::toRawPointer<std::vector>(v);
const QVector<Struct *> x3 = Utils::toRawPointer<QVector>(v);
// different fully specified result container
const std::vector<BaseStruct *> x4 = Utils::toRawPointer<std::vector<BaseStruct *>>(v);
const QVector<BaseStruct *> x5 = Utils::toRawPointer<QVector<BaseStruct *>>(v);
}
void tst_Algorithm::toReferences()
{
// toReference
{
// std::vector -> std::vector
std::vector<Struct> v;
const std::vector<std::reference_wrapper<Struct>> x = Utils::toReferences(v);
}
{
// QList -> std::vector
QList<Struct> v;
const std::vector<std::reference_wrapper<Struct>> x = Utils::toReferences<std::vector>(v);
}
{
// std::vector -> QList
std::vector<Struct> v;
const QList<std::reference_wrapper<Struct>> x = Utils::toReferences<QList>(v);
}
// toConstReference
{
// std::vector -> std::vector
const std::vector<Struct> v;
const std::vector<std::reference_wrapper<const Struct>> x = Utils::toConstReferences(v);
}
{
// QList -> std::vector
const QList<Struct> v;
const std::vector<std::reference_wrapper<const Struct>> x
= Utils::toConstReferences<std::vector>(v);
}
{
// std::vector -> QList
const std::vector<Struct> v;
const QList<std::reference_wrapper<const Struct>> x = Utils::toConstReferences<QList>(v);
}
}
QTEST_MAIN(tst_Algorithm)
#include "tst_algorithm.moc"