diff options
Diffstat (limited to 'source/blender/makesdna/DNA_defs.h')
-rw-r--r-- | source/blender/makesdna/DNA_defs.h | 24 |
1 files changed, 20 insertions, 4 deletions
diff --git a/source/blender/makesdna/DNA_defs.h b/source/blender/makesdna/DNA_defs.h index 79477a56695..bbce4839506 100644 --- a/source/blender/makesdna/DNA_defs.h +++ b/source/blender/makesdna/DNA_defs.h @@ -86,6 +86,9 @@ template<class T> class ShallowDataConstRef { const T &ref_; }; +template<class T> class ShallowZeroInitializeTag { +}; + } // namespace blender::dna::internal # define DNA_DEFINE_CXX_METHODS(class_name) \ @@ -108,6 +111,18 @@ template<class T> class ShallowDataConstRef { _DNA_internal_memcpy(this, ref.get_pointer(), sizeof(class_name)); \ } \ return *this; \ + } \ + /* Create object which memory is filled with zeros. */ \ + class_name(const blender::dna::internal::ShallowZeroInitializeTag<class_name> /*tag*/) \ + : class_name() \ + { \ + _DNA_internal_memzero(this, sizeof(class_name)); \ + } \ + class_name &operator=( \ + const blender::dna::internal::ShallowZeroInitializeTag<class_name> /*tag*/) \ + { \ + _DNA_internal_memzero(this, sizeof(class_name)); \ + return *this; \ } namespace blender::dna { @@ -126,11 +141,12 @@ template<class T> return internal::ShallowDataConstRef(other); } -/* Fill underlying memory used by DNA object with zeroes. */ -template<class T> inline void zero_memory(T &object) +/* DNA object initializer which leads to an object which underlying memory is filled with zeroes. + */ +template<class T> +[[nodiscard]] inline internal::ShallowZeroInitializeTag<T> shallow_zero_initialize() { - /* TODO(sergey): Consider adding static assert for T being a trivial type. */ - _DNA_internal_memzero(&object, sizeof(T)); + return internal::ShallowZeroInitializeTag<T>(); } } // namespace blender::dna |