1/* Copyright 2015 The TensorFlow Authors. All Rights Reserved.
2
3Licensed under the Apache License, Version 2.0 (the "License");
4you may not use this file except in compliance with the License.
5You may obtain a copy of the License at
6
7 http://www.apache.org/licenses/LICENSE-2.0
8
9Unless required by applicable law or agreed to in writing, software
10distributed under the License is distributed on an "AS IS" BASIS,
11WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12See the License for the specific language governing permissions and
13limitations under the License.
14==============================================================================*/
15
16#ifndef TENSORFLOW_CORE_KERNELS_CONSTANT_OP_H_
17#define TENSORFLOW_CORE_KERNELS_CONSTANT_OP_H_
18
19#include "third_party/eigen3/unsupported/Eigen/CXX11/Tensor"
20#include "tensorflow/core/framework/op_kernel.h"
21#include "tensorflow/core/framework/tensor_types.h"
22#include "tensorflow/core/platform/macros.h"
23
24namespace tensorflow {
25
26// ConstantOp returns a tensor specified by ConstantOpDef.
27class ConstantOp : public OpKernel {
28 public:
29 explicit ConstantOp(OpKernelConstruction* ctx);
30 void Compute(OpKernelContext* ctx) override;
31 bool IsExpensive() override { return false; }
32 const Tensor* const_tensor() const override { return &tensor_; };
33 ~ConstantOp() override;
34
35 private:
36 Tensor tensor_;
37 TF_DISALLOW_COPY_AND_ASSIGN(ConstantOp);
38};
39
40class PlaceholderOp : public OpKernel {
41 public:
42 explicit PlaceholderOp(OpKernelConstruction* ctx);
43 void Compute(OpKernelContext* ctx) override;
44
45 private:
46 PartialTensorShape expected_shape_;
47};
48
49} // namespace tensorflow
50
51#endif // TENSORFLOW_CORE_KERNELS_CONSTANT_OP_H_
52