# 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. """ Defines a TempOpAttr class that allows temporarily changing an attr of the operator to allow unit testing. This is useful for AlterOpLayout and Legalize tests.""" from tvm import relay class TempOpAttr(object): """ Temporarily changes the attr of an op. """ def __init__(self, op_name, attr_key, attr_value): """ Saves the required info for RAII pattern usage. Parameters ---------- op_name : str The op name. attr_key : str The attribute name. attr_value : object The attribute value. Examples -------- .. code-block:: python # Temporarily update FTVMAlterOpLayout to a user-defined packed function. # After the test is finished, the attr value will be set back to the original value. with TempOpAttr("nn.conv2d", "FTVMAlterOpLayout", alter_conv2d): my_mod = relay.transform.AlterOpLayout()(my_mod) """ self.op = relay.op.get(op_name) self.attr_key = attr_key self.attr_value = attr_value def __enter__(self): self.older_attr = self.op.get_attr(self.attr_key) self.op.reset_attr(self.attr_key) self.op.set_attr(self.attr_key, self.attr_value) return self def __exit__(self, ptype, value, trace): self.op.reset_attr(self.attr_key) if self.older_attr: self.op.set_attr(self.attr_key, self.older_attr)