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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_NODE_MIXINS_H__
#define __LOCO_IR_NODE_MIXINS_H__
#include "loco/IR/Node.h"
#include "loco/IR/DataType.h"
#include "loco/IR/Dimension.h"
#include <vector>
#include <initializer_list>
namespace loco
{
enum class NodeTrait
{
DataType,
// Nodes with TensorShape trait will provide the following methods:
// - rank()
// - rank(value)
// - dim()
// - dim(value)
// - shape({...})
TensorShape,
};
template <NodeTrait T> class NodeMixin;
template <> class NodeMixin<NodeTrait::DataType>
{
public:
NodeMixin() = default;
public:
const DataType &dtype(void) const { return _dtype; }
void dtype(const DataType &dtype) { _dtype = dtype; }
private:
/// @brief Data type
DataType _dtype{DataType::Unknown};
};
template <> class NodeMixin<NodeTrait::TensorShape>
{
public:
NodeMixin() = default;
public:
uint32_t rank(void) const { return _dims.size(); }
void rank(uint32_t value) { _dims.resize(value); }
const Dimension &dim(uint32_t axis) const { return _dims.at(axis); }
Dimension &dim(uint32_t axis) { return _dims.at(axis); }
void shape(std::initializer_list<uint32_t> dims)
{
rank(dims.size());
uint32_t axis = 0;
for (auto d : dims)
{
dim(axis++) = d;
}
}
private:
/// @brief Data shape (as tensor)
std::vector<Dimension> _dims;
};
template <unsigned N> struct FixedArity
{
template <typename Base> class Mixin : public virtual Base
{
public:
Mixin()
{
for (uint32_t n = 0; n < N; ++n)
{
_args[n] = std::unique_ptr<Use>{new Use{this}};
}
}
virtual ~Mixin() = default;
public:
unsigned arity(void) const final { return N; }
Node *arg(uint32_t n) const final { return _args.at(n)->node(); }
void drop(void) final
{
for (uint32_t n = 0; n < N; ++n)
{
_args.at(n)->node(nullptr);
}
}
protected:
// This API allows inherited classes to access "_args" field.
Use *at(unsigned n) const { return _args.at(n).get(); }
private:
std::array<std::unique_ptr<Use>, N> _args{};
};
};
template <NodeTrait Trait> struct With
{
template <typename Base> struct Mixin : public virtual Base, public NodeMixin<Trait>
{
// DO NOTHING
};
};
} // namespace loco
#endif // __LOCO_IR_NODE_MIXINS_H__
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