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+/*
+ * Copyright (c) 2018 Samsung Electronics Co., Ltd. All Rights Reserved
+ *
+ * Licensed 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.
+ */
+
+/**
+ * @file Reader.h
+ * @ingroup COM_AI_RUNTIME
+ * @brief This file contains nnfw::misc::tensor::Reader struct
+ */
+
+#ifndef __NNFW_MISC_TENSOR_READER_H__
+#define __NNFW_MISC_TENSOR_READER_H__
+
+#include "misc/tensor/Index.h"
+
+namespace nnfw
+{
+namespace misc
+{
+namespace tensor
+{
+
+/**
+ * @brief Struct to read element of tensor
+ * @tparam T Type of elements in tensor
+ */
+template <typename T> struct Reader
+{
+ /**
+ * @brief Destroy the Reader object
+ */
+ virtual ~Reader() = default;
+
+ /**
+ * @brief Get an element of tensor
+ * @param[in] index Index specifying indexes of tensor element
+ * @return The value of specificed element
+ */
+ virtual T at(const Index &index) const = 0;
+};
+
+} // namespace tensor
+} // namespace misc
+} // namespace nnfw
+
+#endif // __NNFW_MISC_TENSOR_READER_H__