chore: import upstream snapshot with attribution

python/tvm/runtime/_ffi_node_api.py

@@ -0,0 +1,44 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you 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.
+
+# pylint: disable=invalid-name, unused-argument
+"""FFI for tvm.node"""
+
+import tvm_ffi
+import tvm_ffi.core
+
+
+# The implementations below are default ones when the corresponding
+# functions are not available in the runtime only mode.
+# They will be overriden via tvm_ffi.init_ffi_api to the ones registered
+def AsRepr(obj):
+    return type(obj).__name__ + "(" + obj.__ctypes_handle__().value + ")"
+
+
+def SaveJSON(obj):
+    raise RuntimeError("Do not support object serialization in runtime only mode")
+
+
+def LoadJSON(json_str):
+    raise RuntimeError("Do not support object serialization in runtime only mode")
+
+
+# Exports functions registered in node namespace.
+tvm_ffi.init_ffi_api("node", __name__)
+
+# Override the default repr function for tvm_ffi.core.Object.
+tvm_ffi.core.__object_repr__ = AsRepr