1 files changed, 38 insertions, 0 deletions
diff --git a/io_scene_gltf2/io/com/gltf2_io_extensions.py b/io_scene_gltf2/io/com/gltf2_io_extensions.py
new file mode 100644
index 00000000..2422d205
--- /dev/null
+++ b/io_scene_gltf2/io/com/gltf2_io_extensions.py
@@ -0,0 +1,38 @@
+# Copyright 2018 The glTF-Blender-IO authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from typing import List, Dict, Any
+
+
+class Extension:
+    """Container for extensions. Allows to specify requiredness"""
+    def __init__(self, name: str, extension: Dict[str, Any], required: bool = True):
+        self.name = name
+        self.extension = extension
+        self.required = required
+
+
+class ChildOfRootExtension(Extension):
+    """Container object for extensions that should be appended to the root extensions"""
+    def __init__(self, path: List[str], name: str, extension: Dict[str, Any], required: bool = True):
+        """
+        Wrap a local extension entity into an object that will later be inserted into a root extension and converted
+        to a reference.
+        :param path: The path of the extension object in the root extension. E.g. ['lights'] for
+        KHR_lights_punctual. Must be a path to a list in the extensions dict.
+        :param extension: The data that should be placed into the extension list
+        """
+        self.path = path
+        super().__init__(name, extension, required)
+