# 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=no-else-return, unidiomatic-typecheck, unused-import
"""The base node types for the Relay language."""
import os
import tvm._ffi

from tvm.runtime import Object
from tvm.ir import SourceName, Span, Node as RelayNode


__STD_PATH__ = os.path.join(os.path.dirname(os.path.realpath(__file__)), "std")


@tvm._ffi.register_func("tvm.relay.std_path")
def _std_path():
    return __STD_PATH__


@tvm._ffi.register_object("relay.Id")
class Id(Object):
    """Unique identifier(name) used in Var.
       Guaranteed to be stable across all passes.
    """
    def __init__(self):
        raise RuntimeError("Cannot directly construct Id")
