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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 __COCO_IR_OBJECT_H__
#define __COCO_IR_OBJECT_H__
#include "coco/IR/Entity.h"
#include "coco/IR/Bag.h"
#include "coco/IR/Dep.h"
#include "coco/IR/Def.forward.h"
#include "coco/IR/UseSet.h"
#include "coco/IR/FeatureObject.forward.h"
#include "coco/IR/KernelObject.forward.h"
#include <set>
namespace coco
{
/**
* @brief Base interface on all typed NN values
*/
class Object : public Entity
{
public:
friend class Def;
friend class Use;
public:
enum class Kind
{
Unknown,
Feature,
Kernel,
};
public:
struct Producer : public Bag::Updater
{
virtual ~Producer() = default;
};
struct Consumer : public Bag::Reader
{
virtual ~Consumer() = default;
};
using ConsumerSet = std::set<Consumer *>;
public:
Object();
public:
virtual ~Object() = default;
public:
virtual Kind kind(void) const { return Kind::Unknown; }
public:
coco::Bag *bag(void) const { return _dep.bag(); }
void bag(coco::Bag *bag) { _dep.bag(bag); }
public:
virtual FeatureObject *asFeature(void) { return nullptr; }
virtual const FeatureObject *asFeature(void) const { return nullptr; }
virtual KernelObject *asKernel(void) { return nullptr; }
virtual const KernelObject *asKernel(void) const { return nullptr; }
public:
Def *def(void) const;
const UseSet *uses(void) const;
private:
/**
* @brief Update the link to a producer
*
* WARN Only Def class is allowed to access this method
*/
void def(Def *d);
// NOTE "mutable_" prefix is introduced to avoid resolution issue similarly as in Bag
// WARN Only Use class is allowed to access this method
UseSet *mutable_uses(void);
private:
Dep _dep;
Def *_def = nullptr;
UseSet _uses;
};
/**
* @brief Check whether a given object is of type T
*
* The example below shows how to use this "isa<T>" helper:
* auto obj = new FeatureObject{};
*
* if (isa<FeatureObject>())
* {
* std::cout << "FeatureObject" << std::endl;
* }
*/
template <typename T> bool isa(const Object *);
/**
* @brief Cast a generic object as a specific one
*
* "cast<T>(o)" accepts only a valid object pointer "o" that "isa<T>(o)" holds
* - Then, "cast<T>(o)" always returns a valid object pointer.
*/
template <typename T> T *cast(Object *);
/**
* @brief Cast a generic object as a specific one
*
* Unlike "cast<T>", "safe_cast<T>" accepts any object pointer
* - "safe_cast<T>(nullptr)" returns "nullptr"
* - "safe_cast<T>(o)" returns "nullptr" if "isa<T>(o)" does not hold
*/
template <typename T> T *safe_cast(Object *);
/// @brief Return the producer of a given object if it exists
Object::Producer *producer(const Object *);
/// @brief Return a set of consumers of a given object.
Object::ConsumerSet consumers(const Object *);
} // namespace coco
#endif // __COCO_IR_OBJECT_H__
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