[libcamera-devel] [PATCH 1/5] libcamera: Provide class.h
Kieran Bingham
kieran.bingham at ideasonboard.com
Thu Oct 22 15:56:01 CEST 2020
Provide a public header to define helpers for class definitions.
This initially implements macros to clearly define the deletion of
copy/move/assignment constructors/operators for classes to restrict
their capabilities explicitly.
Signed-off-by: Kieran Bingham <kieran.bingham at ideasonboard.com>
---
include/libcamera/class.h | 35 +++++++++++++++++++++++++++++++++++
include/libcamera/meson.build | 1 +
2 files changed, 36 insertions(+)
create mode 100644 include/libcamera/class.h
diff --git a/include/libcamera/class.h b/include/libcamera/class.h
new file mode 100644
index 000000000000..adcfa8860957
--- /dev/null
+++ b/include/libcamera/class.h
@@ -0,0 +1,35 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/*
+ * Copyright (C) 2020, Google Inc.
+ *
+ * class.h - class helpers
+ */
+#ifndef __LIBCAMERA_CLASS_H__
+#define __LIBCAMERA_CLASS_H__
+
+/**
+ * \brief Delete the copy constructor and assignment operator.
+ */
+#define DELETE_COPY_AND_ASSIGN(klass) \
+ /* copy constructor. */ \
+ klass(const klass &) = delete; \
+ /* copy assignment operator. */ \
+ klass &operator=(const klass &) = delete
+
+/**
+ * \brief Delete the move construtor and assignment operator.
+ */
+#define DELETE_MOVE_AND_ASSIGN(klass) \
+ /* move constructor. */ \
+ klass(klass &&) = delete; \
+ /* move assignment operator. */ \
+ klass &operator=(klass &&) = delete
+
+/**
+ * \brief Delete all copy and move constructors, and assignment operators.
+ */
+#define DELETE_COPY_MOVE_AND_ASSIGN(klass) \
+ DELETE_COPY_AND_ASSIGN(klass); \
+ DELETE_MOVE_AND_ASSIGN(klass)
+
+#endif /* __LIBCAMERA_CLASS_H__ */
diff --git a/include/libcamera/meson.build b/include/libcamera/meson.build
index 3d5fc70134ad..b3363a6f735b 100644
--- a/include/libcamera/meson.build
+++ b/include/libcamera/meson.build
@@ -5,6 +5,7 @@ libcamera_public_headers = files([
'buffer.h',
'camera.h',
'camera_manager.h',
+ 'class.h',
'controls.h',
'event_dispatcher.h',
'event_notifier.h',
--
2.25.1
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