2 курс. Программирование на C++. Турнир 2, осень 2021

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5788495

Пользователь

Миронов Александр Сергеевич

Время

00:01<< 17.11.2021 00:01 (0:01) 00:05>>

Обработка

00:01 ... 00:01 (2,49 сек.)

Файл

5788495.cpp (CLang++ 5.0.0 + Address Sanitizer)

Турнир

2 курс. Программирование на C++. Турнир 2, осень 2021

Задача

C: Smart Pointer

Набор тестов

Ограничения

Время: 25с Память: 512Мб

Состояние [?]

CE	Ошибка компиляции

код | результаты

In file included from main.cpp:2:0:
SmartPointer.hpp:4:10: fatal error: Test.h: No such file or directory
 #include "Test.h"
          ^~~~~~~~
compilation terminated.

[печатать | | ]

≡

#pragma once

#include <memory>
#include "Test.h"

namespace smart_pointer {
class exception : std::exception {
    using base_class = std::exception;
    using base_class::base_class;
};
template<typename T, typename Allocator>
class SmartPointer {
    ENABLE_CLASS_TESTS;

public:
    using value_type = T;

explicit SmartPointer(value_type *p = nullptr) {
        if (p == nullptr) {
            this->core = nullptr;
        } else {
            this->core = new Core();
            core->point = p;
            core->count = 1;
        }
    }
    SmartPointer(const SmartPointer &p) {
        this->core = p.core;
        if (p.core != nullptr) {
            core->count++;
        }
    }
    SmartPointer(SmartPointer &&p) {
        this->core = p.core;
        p.core = nullptr;
    }
    SmartPointer &operator=(const SmartPointer &p) {
        if (core != nullptr) {
            core->count -= 1;
            if (core->count == 0) {
                delete (core);
            }
        }
        this->core = p.core;
        if (p.core != nullptr) {
            core->count++;
        }
        return *this;
    }
    SmartPointer &operator=(SmartPointer &&p) {
        if (core != nullptr) {
            core->count -= 1;
            if (core->count == 0) {
                delete (core);
            }
        }
        this->core = p.core;
        p.core = nullptr;
        return *this;
    }
    SmartPointer &operator=(value_type *p) {
        if (core != nullptr) {
            core->count -= 1;
            if (core->count == 0) {
                delete (core);
            }
        }
        if (p != nullptr) {
            this->core = new Core();
            core->point = p;
            core->count = 1;
        } else {
            this->core = nullptr;
        }
        return *this;
    }
    ~SmartPointer() {
        if (core != nullptr) {
            core->count -= 1;
            if (core->count == 0) {
                delete (core);
            }
        }
    }
    value_type &operator*() {
        if (core == nullptr) {
            throw smart_pointer::exception();
        } else {
            return *(core->point);
        }
    }
    const value_type &operator*() const {
        if (core == nullptr) {
            throw smart_pointer::exception();
        } else {
            return *(core->point);
        }
    }
    value_type *operator->() const {
        if (core == nullptr) {
            return nullptr;
        } else {
            return core->point;
        }
    }
    value_type *get() const {
        if (core == nullptr) {
            return nullptr;
        } else {
            return core->point;
        }
    }
    operator bool() const { return core != nullptr; }

template<typename U, typename AnotherAllocator>
    bool operator==(const SmartPointer<U, AnotherAllocator> &pointer) const {
        return static_cast<void *>(this->get()) ==
               static_cast<void *>(pointer.get());
    }

template<typename U, typename AnotherAllocator>
    bool operator!=(const SmartPointer<U, AnotherAllocator> &pointer) const {
        return static_cast<void *>(this->get()) !=
               static_cast<void *>(pointer.get());
    }

std::size_t count_owners() const {
        if (core != nullptr) {
            return core->count;
        } else {
            return 0;
        }
    }

private:
    class Core {
     public:
        size_t count;
        value_type *point;
    };

Core *core;
};
}  // namespace smart_pointer

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