1 files changed, 75 insertions, 0 deletions
diff --git a/source/blender/functions/intern/attributes_ref.cc b/source/blender/functions/intern/attributes_ref.cc
new file mode 100644
index 00000000000..4686e217911
--- /dev/null
+++ b/source/blender/functions/intern/attributes_ref.cc
@@ -0,0 +1,75 @@
+/*
+ * 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.
+ */
+
+#include "FN_attributes_ref.hh"
+
+namespace blender::fn {
+
+AttributesInfoBuilder::~AttributesInfoBuilder()
+{
+  for (int i : defaults_.index_range()) {
+    types_[i]->destruct(defaults_[i]);
+  }
+}
+
+bool AttributesInfoBuilder::add(StringRef name, const CPPType &type, const void *default_value)
+{
+  if (names_.add_as(name)) {
+    types_.append(&type);
+
+    if (default_value == nullptr) {
+      default_value = type.default_value();
+    }
+    void *dst = allocator_.allocate(type.size(), type.alignment());
+    type.copy_to_uninitialized(default_value, dst);
+    defaults_.append(dst);
+    return true;
+  }
+  else {
+    const CPPType &stored_type = *types_[names_.index_of_as(name)];
+    if (stored_type != type) {
+      std::cout << "Warning: Tried to add an attribute twice with different types (" << name
+                << ": " << stored_type.name() << ", " << type.name() << ").\n";
+    }
+    return false;
+  }
+}
+
+AttributesInfo::AttributesInfo(const AttributesInfoBuilder &builder)
+{
+  for (int i : builder.types_.index_range()) {
+    StringRefNull name = allocator_.copy_string(builder.names_[i]);
+    const CPPType &type = *builder.types_[i];
+    const void *default_value = builder.defaults_[i];
+
+    index_by_name_.add_new(name, i);
+    name_by_index_.append(name);
+    type_by_index_.append(&type);
+
+    void *dst = allocator_.allocate(type.size(), type.alignment());
+    type.copy_to_uninitialized(default_value, dst);
+    defaults_.append(dst);
+  }
+}
+
+AttributesInfo::~AttributesInfo()
+{
+  for (int i : defaults_.index_range()) {
+    type_by_index_[i]->destruct(defaults_[i]);
+  }
+}
+
+}  // namespace blender::fn