Depsgraph: Add utility class to keep track of handled ID datablocks

Currently unused, actual logic change will come in the next commit.

1 files changed, 64 insertions, 0 deletions

diff --git a/source/blender/depsgraph/intern/builder/deg_builder_map.cc b/source/blender/depsgraph/intern/builder/deg_builder_map.cc
new file mode 100644
index 00000000000..8c8446c1686
--- /dev/null
+++ b/source/blender/depsgraph/intern/builder/deg_builder_map.cc
@@ -0,0 +1,64 @@
+/*
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * 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.
+ *
+ * The Original Code is Copyright (C) 2018 Blender Foundation.
+ * All rights reserved.
+ *
+ * Original Author: Sergey Sharybin
+ * Contributor(s): None Yet
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+/** \file blender/depsgraph/intern/builder/deg_builder.cc
+ *  \ingroup depsgraph
+ */
+
+#include "intern/builder/deg_builder_map.h"
+
+#include "BLI_utildefines.h"
+#include "BLI_ghash.h"
+
+namespace DEG {
+
+BuilderMap::BuilderMap() {
+	set = BLI_gset_ptr_new("deg builder gset");
+}
+
+
+BuilderMap::~BuilderMap() {
+	BLI_gset_free(set, NULL);
+}
+
+bool BuilderMap::checkIsBuilt(ID *id) {
+	return BLI_gset_haskey(set, id);
+}
+
+void BuilderMap::tagBuild(ID *id) {
+	BLI_gset_insert(set, id);
+}
+
+bool BuilderMap::checkIsBuiltAndTag(ID *id) {
+	void **key_p;
+	if (!BLI_gset_ensure_p_ex(set, id, &key_p)) {
+		*key_p = id;
+		return false;
+	}
+	return true;
+}
+
+}  // namespace DEG