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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 __SHAPE_QUERY_H__
#define __SHAPE_QUERY_H__
#include <nncc/core/ADT/tensor/Shape.h>
/**
* @brief A wrapper class for an integer number that specifies axis
*
* Several Caffe layers includes 'axis' parameter (which may be negative) which specifies
* some axis required for operation.
*
* Here are several examples:
* - Convolution layer uses 'axis' parameter to specify "channel" axis
* (http://caffe.berkeleyvision.org/tutorial/layers/convolution.html)
* - Concat layer uses 'axis' parameter to specify axis to be concatenated
* (http://caffe.berkeleyvision.org/tutorial/layers/concat.html)
*
* AxisSpecifier class is introduced to distinguish this 'axis' parameter from other integers
* (to prevent possible mistake).
*/
class AxisSpecifier
{
public:
explicit AxisSpecifier(int32_t value) : _value{value}
{
// DO NOTHING
}
public:
int32_t value(void) const { return _value; }
private:
int32_t _value = 1;
};
AxisSpecifier axis_specifier(int32_t value);
/**
* @brief A wrapper class that allows additional queries over tensor shape.
*/
class ShapeQuery
{
public:
explicit ShapeQuery(const nncc::core::ADT::tensor::Shape *shape) : _shape{shape}
{
// DO NOTHING
}
public:
/// @brief Return the dimension number (axis) specified by a given axis specifier
uint32_t axis(const AxisSpecifier &) const;
private:
const nncc::core::ADT::tensor::Shape *_shape;
};
ShapeQuery query_on(const nncc::core::ADT::tensor::Shape &);
#endif // __SHAPE_QUERY_H__
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