1 | /* Copyright 2018 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 | #include "tensorflow/core/framework/common_shape_fns.h" |
17 | #include "tensorflow/core/framework/op.h" |
18 | #include "tensorflow/core/framework/shape_inference.h" |
19 | |
20 | namespace tensorflow { |
21 | |
22 | // -------------------------------------------------------------------------- |
23 | REGISTER_OP("Roll" ) |
24 | .Input("input: T" ) |
25 | .Input("shift: Tshift" ) |
26 | .Input("axis: Taxis" ) |
27 | .Output("output: T" ) |
28 | .Attr("T: type" ) |
29 | .Attr("Tshift: {int32,int64}" ) |
30 | .Attr("Taxis: {int32,int64}" ) |
31 | .SetShapeFn([](shape_inference::InferenceContext* c) { |
32 | shape_inference::ShapeHandle unused; |
33 | // The `input` must be 1-D or higher |
34 | TF_RETURN_IF_ERROR(c->WithRankAtLeast(c->input(0), 1, &unused)); |
35 | // The `shift` must be scalar or 1-D. |
36 | TF_RETURN_IF_ERROR(c->WithRankAtMost(c->input(1), 1, &unused)); |
37 | // The `axis` must be scalar or 1-D. |
38 | TF_RETURN_IF_ERROR(c->WithRankAtMost(c->input(2), 1, &unused)); |
39 | // Validate 'shift' is the same shape as axis'. |
40 | TF_RETURN_IF_ERROR(c->Merge(c->input(1), c->input(2), &unused)); |
41 | return shape_inference::UnchangedShape(c); |
42 | }); |
43 | |
44 | } // namespace tensorflow |
45 | |