Welcome to mirror list, hosted at ThFree Co, Russian Federation.

git.blender.org/blender.git - Unnamed repository; edit this file 'description' to name the repository.
summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat (limited to 'source/blender/blenlib/BLI_array.hh')
-rw-r--r--source/blender/blenlib/BLI_array.hh240
1 files changed, 240 insertions, 0 deletions
diff --git a/source/blender/blenlib/BLI_array.hh b/source/blender/blenlib/BLI_array.hh
new file mode 100644
index 00000000000..9dd8341aa76
--- /dev/null
+++ b/source/blender/blenlib/BLI_array.hh
@@ -0,0 +1,240 @@
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+#ifndef __BLI_ARRAY_HH__
+#define __BLI_ARRAY_HH__
+
+/** \file
+ * \ingroup bli
+ *
+ * This is a container that contains a fixed size array. Note however, the size of the array is not
+ * a template argument. Instead it can be specified at the construction time.
+ */
+
+#include "BLI_allocator.hh"
+#include "BLI_array_ref.hh"
+#include "BLI_index_range.hh"
+#include "BLI_memory_utils.hh"
+#include "BLI_utildefines.h"
+
+namespace BLI {
+
+template<typename T, uint InlineBufferCapacity = 4, typename Allocator = GuardedAllocator>
+class Array {
+ private:
+ T *m_data;
+ uint m_size;
+ Allocator m_allocator;
+ AlignedBuffer<sizeof(T) * InlineBufferCapacity, alignof(T)> m_inline_storage;
+
+ public:
+ Array()
+ {
+ m_data = this->inline_storage();
+ m_size = 0;
+ }
+
+ Array(ArrayRef<T> values)
+ {
+ m_size = values.size();
+ m_data = this->get_buffer_for_size(values.size());
+ uninitialized_copy_n(values.begin(), m_size, m_data);
+ }
+
+ Array(const std::initializer_list<T> &values) : Array(ArrayRef<T>(values))
+ {
+ }
+
+ explicit Array(uint size)
+ {
+ m_size = size;
+ m_data = this->get_buffer_for_size(size);
+
+ for (uint i = 0; i < m_size; i++) {
+ new (m_data + i) T();
+ }
+ }
+
+ Array(uint size, const T &value)
+ {
+ m_size = size;
+ m_data = this->get_buffer_for_size(size);
+ uninitialized_fill_n(m_data, m_size, value);
+ }
+
+ Array(const Array &other)
+ {
+ m_size = other.size();
+ m_allocator = other.m_allocator;
+
+ m_data = this->get_buffer_for_size(other.size());
+ uninitialized_copy_n(other.begin(), m_size, m_data);
+ }
+
+ Array(Array &&other) noexcept
+ {
+ m_size = other.m_size;
+ m_allocator = other.m_allocator;
+
+ if (!other.uses_inline_storage()) {
+ m_data = other.m_data;
+ }
+ else {
+ m_data = this->get_buffer_for_size(m_size);
+ uninitialized_relocate_n(other.m_data, m_size, m_data);
+ }
+
+ other.m_data = other.inline_storage();
+ other.m_size = 0;
+ }
+
+ ~Array()
+ {
+ destruct_n(m_data, m_size);
+ if (!this->uses_inline_storage()) {
+ m_allocator.deallocate((void *)m_data);
+ }
+ }
+
+ Array &operator=(const Array &other)
+ {
+ if (this == &other) {
+ return *this;
+ }
+
+ this->~Array();
+ new (this) Array(other);
+ return *this;
+ }
+
+ Array &operator=(Array &&other)
+ {
+ if (this == &other) {
+ return *this;
+ }
+
+ this->~Array();
+ new (this) Array(std::move(other));
+ return *this;
+ }
+
+ operator ArrayRef<T>() const
+ {
+ return ArrayRef<T>(m_data, m_size);
+ }
+
+ operator MutableArrayRef<T>()
+ {
+ return MutableArrayRef<T>(m_data, m_size);
+ }
+
+ ArrayRef<T> as_ref() const
+ {
+ return *this;
+ }
+
+ MutableArrayRef<T> as_mutable_ref()
+ {
+ return *this;
+ }
+
+ T &operator[](uint index)
+ {
+ BLI_assert(index < m_size);
+ return m_data[index];
+ }
+
+ const T &operator[](uint index) const
+ {
+ BLI_assert(index < m_size);
+ return m_data[index];
+ }
+
+ uint size() const
+ {
+ return m_size;
+ }
+
+ void fill(const T &value)
+ {
+ MutableArrayRef<T>(*this).fill(value);
+ }
+
+ void fill_indices(ArrayRef<uint> indices, const T &value)
+ {
+ MutableArrayRef<T>(*this).fill_indices(indices, value);
+ }
+
+ const T *begin() const
+ {
+ return m_data;
+ }
+
+ const T *end() const
+ {
+ return m_data + m_size;
+ }
+
+ T *begin()
+ {
+ return m_data;
+ }
+
+ T *end()
+ {
+ return m_data + m_size;
+ }
+
+ IndexRange index_range() const
+ {
+ return IndexRange(m_size);
+ }
+
+ Allocator &allocator()
+ {
+ return m_allocator;
+ }
+
+ private:
+ T *get_buffer_for_size(uint size)
+ {
+ if (size <= InlineBufferCapacity) {
+ return this->inline_storage();
+ }
+ else {
+ return this->allocate(size);
+ }
+ }
+
+ T *inline_storage() const
+ {
+ return (T *)m_inline_storage.ptr();
+ }
+
+ T *allocate(uint size)
+ {
+ return (T *)m_allocator.allocate_aligned(
+ size * sizeof(T), std::alignment_of<T>::value, __func__);
+ }
+
+ bool uses_inline_storage() const
+ {
+ return m_data == this->inline_storage();
+ }
+};
+
+} // namespace BLI
+
+#endif /* __BLI_ARRAY_HH__ */