diff options
| author | Giuseppe D'Angelo <giuseppe.dangelo@kdab.com> | 2023-10-24 21:13:36 +0200 |
|---|---|---|
| committer | Giuseppe D'Angelo <giuseppe.dangelo@kdab.com> | 2023-10-26 19:24:40 +0200 |
| commit | 358745d7ded0492cc8c61fa46d7c0928f584c184 (patch) | |
| tree | e7faa71e7d9540c4b5bb3842085010a51b063ae4 /src/corelib/tools/qsharedpointer.h | |
| parent | 1dcc14f2d08364411ff8f6dcd9e00277bcadef5d (diff) | |
QSP/QWP: introduce owner_before, owner_equal, owner_hash
While at the moment we don't have aliasing support in QSharedPointer,
introduce owner-based comparisons and hashing. This also fulfills some
use cases in lieu of operator== for QWeakPointer (which got deprecated
by bb23a05905d7dc0e416a646e40592436daa939f2).
I'm using C++26/P1901's spelling of owner_equal, instead of
Boost.SmartPtr's spelling (owner_equal*s*). Given the niche use case,
the lack of interoperability with Qt's own containers, as well as the
Standard comparison objects' semantics (std::owner_less,
std::owner_equal), I don't think we should be giving these a Qt-ish name
as it would be pretty useless.
[ChangeLog][QtCore][QSharedPointer] Added owner_before, owner_equal,
owner_hash.
[ChangeLog][QtCore][QWeakPointer] Added owner_before, owner_equal,
owner_hash.
Done-with: Fabian Kosmale <fabian.kosmale@qt.io>
Change-Id: I8b792ae79f14cd518ba4a006edaa17786a8352a0
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
Diffstat (limited to 'src/corelib/tools/qsharedpointer.h')
| -rw-r--r-- | src/corelib/tools/qsharedpointer.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/src/corelib/tools/qsharedpointer.h b/src/corelib/tools/qsharedpointer.h index 2a60f3ca5e..116c9afa00 100644 --- a/src/corelib/tools/qsharedpointer.h +++ b/src/corelib/tools/qsharedpointer.h @@ -72,6 +72,19 @@ public: template <typename... Args> static inline QSharedPointer<T> create(Args &&... args); + + // owner-based comparisons + template <typename X> + bool owner_before(const QSharedPointer<X> &other) const noexcept; + template <typename X> + bool owner_before(const QWeakPointer<X> &other) const noexcept; + + template <typename X> + bool owner_equal(const QSharedPointer<X> &other) const noexcept; + template <typename X> + bool owner_equal(const QWeakPointer<X> &other) const noexcept; + + size_t owner_hash() const noexcept; }; template <class T> @@ -108,6 +121,19 @@ public: QSharedPointer<T> toStrongRef() const; QSharedPointer<T> lock() const; + + // owner-based comparisons + template <typename X> + bool owner_before(const QWeakPointer<X> &other) const noexcept; + template <typename X> + bool owner_before(const QSharedPointer<X> &other) const noexcept; + + template <typename X> + bool owner_equal(const QWeakPointer<X> &other) const noexcept; + template <typename X> + bool owner_equal(const QSharedPointer<X> &other) const noexcept; + + size_t owner_hash() const noexcept; }; template <class T> |