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[libcalamares] Extend the Deleter-helper with "preserve"

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Sometimes you want to keep the thing around after all.
This commit is contained in:
Adriaan de Groot 2020-10-30 14:47:30 +01:00
parent 7659dfdb9d
commit b72eba8157
1 changed files with 12 additions and 4 deletions
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16
src/libcalamares/utils/RAII.h
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@ -16,20 +16,28 @@
#include <type_traits>
/// @brief Convenience to zero out and deleteLater of any QObject-derived-class
/** @brief Convenience to zero out and deleteLater of any QObject-derived-class
*
* If, before destruction, preserve is set to @c true, then
* the object is "preserved", and not deleted at all.
*/
template < typename T >
struct cqDeleter
{
T*& p;
bool preserve = false;
~cqDeleter()
{
static_assert( std::is_base_of< QObject, T >::value, "Not a QObject-class" );
if ( p )
if ( !preserve )
{
p->deleteLater();
if ( p )
{
p->deleteLater();
}
p = nullptr;
}
p = nullptr;
}
};