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/*
* Copyright (c) 2019 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 __LOCO_IR_DIMENSION_H__
#define __LOCO_IR_DIMENSION_H__
#include <cstdint>
namespace loco
{
/**
* @brief The value of one dimension in a tensor shape
* @note The value may be unknown
*/
class Dimension final
{
private:
enum class Kind
{
Known,
Unknown
};
public:
// @brief Construct an "unknown" dimension
Dimension() = default;
// @brief Construct a "known" dimension
Dimension(uint32_t value) { set(value); }
public:
// @brief Return whether the value is known (or not)
bool known(void) const { return _kind == Kind::Known; }
// @brief Return the value
// @note This value is meaningful only for known dimension
uint32_t value(void) const { return _value; }
void set(uint32_t value)
{
_kind = Kind::Known;
_value = value;
}
void unset(void)
{
_kind = Kind::Unknown;
_value = 0;
}
private:
Kind _kind{Kind::Unknown};
uint32_t _value{0};
};
/**
* @brief Equality operator between two Dimensions
*
* @note Refer to the definition of equality of dimemsion at
* https://www.tensorflow.org/api_docs/python/tf/Dimension#__eq__
*/
bool operator==(const Dimension &, const Dimension &);
bool operator==(const Dimension &, uint32_t);
bool operator==(uint32_t, const Dimension &);
// @brief Make an "unknown" dimension
Dimension make_dimension(void);
} // namespace loco
#endif // __LOCO_IR_DIMENSION_H__
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