1 | /* Copyright 2015 The TensorFlow Authors. All Rights Reserved. |
2 | |
3 | Licensed under the Apache License, Version 2.0 (the "License"); |
4 | you may not use this file except in compliance with the License. |
5 | You may obtain a copy of the License at |
6 | |
7 | http://www.apache.org/licenses/LICENSE-2.0 |
8 | |
9 | Unless required by applicable law or agreed to in writing, software |
10 | distributed under the License is distributed on an "AS IS" BASIS, |
11 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
12 | See the License for the specific language governing permissions and |
13 | limitations under the License. |
14 | ==============================================================================*/ |
15 | |
16 | #ifndef TENSORFLOW_CORE_KERNELS_IDENTITY_OP_H_ |
17 | #define TENSORFLOW_CORE_KERNELS_IDENTITY_OP_H_ |
18 | |
19 | #include "tensorflow/core/framework/op_kernel.h" |
20 | |
21 | namespace tensorflow { |
22 | |
23 | class IdentityOp : public OpKernel { |
24 | public: |
25 | explicit IdentityOp(OpKernelConstruction* context) : OpKernel(context) {} |
26 | |
27 | void Compute(OpKernelContext* context) override { |
28 | if (IsRefType(context->input_dtype(0))) { |
29 | context->forward_ref_input_to_ref_output(0, 0); |
30 | } else { |
31 | context->set_output(0, context->input(0)); |
32 | } |
33 | } |
34 | |
35 | bool IsExpensive() override { return false; } |
36 | }; |
37 | |
38 | } // namespace tensorflow |
39 | |
40 | #endif // TENSORFLOW_CORE_KERNELS_IDENTITY_OP_H_ |
41 | |