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libcamera: class: Provide move and copy disablers

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It can be difficult to correctly parse the syntax for copy/move and the
associated assignment operators.

Provide helpers as syntactic sugar to facilitate disabling either the
copy constructor, and copy assignment operator, and the move constructor
and move assignment operator in a way which is explicit and clear.

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
This commit is contained in:
Kieran Bingham 2021-02-08 17:07:32 +00:00
parent 1473add188
commit 41b6d83e6a
2 changed files with 75 additions and 0 deletions
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18
include/libcamera/class.h
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@ -11,6 +11,24 @@
namespace libcamera {
#ifndef __DOXYGEN__
#define LIBCAMERA_DISABLE_COPY(klass) \
klass(const klass &) = delete; \
klass &operator=(const klass &) = delete;
#define LIBCAMERA_DISABLE_MOVE(klass) \
klass(klass &&) = delete; \
klass &operator=(klass &&) = delete;
#define LIBCAMERA_DISABLE_COPY_AND_MOVE(klass) \
LIBCAMERA_DISABLE_COPY(klass) \
LIBCAMERA_DISABLE_MOVE(klass)
#else
#define LIBCAMERA_DISABLE_COPY(klass)
#define LIBCAMERA_DISABLE_MOVE(klass)
#define LIBCAMERA_DISABLE_COPY_AND_MOVE(klass)
#endif
#ifndef __DOXYGEN__
#define LIBCAMERA_DECLARE_PRIVATE(klass) \
public: \