1 files changed, 86 insertions, 0 deletions
diff --git a/compiler/mir/include/mir/TensorVariant.h b/compiler/mir/include/mir/TensorVariant.h
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+++ b/compiler/mir/include/mir/TensorVariant.h
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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.
+ */
+
+#ifndef _MIR_TENSOR_VARIANT_H_
+#define _MIR_TENSOR_VARIANT_H_
+
+#include "mir/Common.h"
+#include "mir/Index.h"
+#include "mir/TensorType.h"
+
+#include <adtidas/SmallVector.h>
+
+#include <cassert>
+#include <memory>
+
+namespace mir
+{
+
+class TensorVariant
+{
+public:
+  explicit TensorVariant(const TensorType &type);
+
+  TensorVariant(const TensorType &type, const void *data);
+
+  // TODO Remove as deprecated.
+  TensorVariant(DataType element_type, const Shape &shape);
+
+  // TODO Remove as deprecated.
+  TensorVariant(DataType element_type, const Shape &shape, const void *data);
+
+  TensorVariant(const TensorVariant &t_old, const Shape &shape);
+
+  virtual ~TensorVariant() = default;
+
+  char *at(const Index &idx) const { return _data.get() + getOffset(idx) * _element_size; }
+
+  char *atOffset(int32_t offset) const
+  {
+    assert(offset >= 0 && offset < getShape().numElements());
+    return _data.get() + offset * _element_size;
+  }
+
+  size_t getOffset(const Index &idx) const
+  {
+    assert(idx.rank() == getShape().rank());
+    std::size_t offset = 0;
+    for (int i = 0; i < getShape().rank(); ++i)
+      offset += idx.at(i) * _strides[i];
+    return offset;
+  }
+
+  const TensorType &getType() const { return _type; }
+
+  DataType getElementType() const { return _type.getElementType(); }
+  const Shape &getShape() const { return _type.getShape(); }
+
+  // TODO Replace uses with `getElementType` and remove.
+  DataType getDataType() const { return _type.getElementType(); }
+  // FIXME This should not be a member of this class.
+  size_t getElementSize() const { return _element_size; }
+
+private:
+  TensorType _type;
+  std::shared_ptr<char> _data;
+  adt::small_vector<int_fast32_t, MAX_DIMENSION_COUNT> _strides;
+
+  size_t _element_size;
+};
+
+} // namespace mir
+
+#endif //_MIR_TENSOR_VARIANT_H_