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

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5788248

Пользователь

Юрочкин Руслан Викторович

Время

23:33<< 16.11.2021 23:34 (27 д. 21:34) 23:43>>

Обработка

23:34 ... 23:34 (2,68 сек.)

Файл

SmartPointer.hpp (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 [?]

RE	Ошибка выполнения на тесте №1

код | результаты

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#pragma once

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

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* ptr = nullptr) {
         if (ptr == nullptr) {
             this->core = nullptr;
         } else {
             this->core = new Core();
             this->core->ptr = ptr;
             this->core->count = 1;
         }
     }

~SmartPointer() {
         if (this->core != nullptr && this->core->count == 1) {
             delete this->core;
         }
     }

SmartPointer(const SmartPointer& obj) {
         this->core = obj.core;

if (obj.core != nullptr) {
             this->core->count++;
         }
     }

SmartPointer(SmartPointer&& dyingObj) {
         this->core = dyingObj.core;
         dyingObj.core = nullptr;
     }

SmartPointer& operator=(const SmartPointer& other) {
         if (this->core != nullptr && this->core->count == 1) {
             delete this->core;
         }

this->core = other.core;

if (other.core != nullptr) {
             this->core->count++;
         }

return *this;
     }

SmartPointer& operator=(SmartPointer&& dyingObj) {
         if (this->core != nullptr) {
             delete this->core;
         }

this->core = dyingObj.core;
         dyingObj.core = nullptr;
         return *this;
     }

SmartPointer& operator=(value_type* other) {
         if (this->core != nullptr && this->core->count == 1) {
             delete this->core;
         }

if (other != nullptr) {
             this->core = new Core();
             this->core->ptr = other;
             this->core->count = 1;
         } else {
             this->core = nullptr;
         }

return *this;
     }

value_type& operator*() {
         if (this->core == nullptr) {
             throw smart_pointer::exception();
         } else {
             return *this->core->ptr;
         }
     }

const value_type& operator*() const {
         if (this->core == nullptr) {
             throw smart_pointer::exception();
         } else {
             return *this->core->ptr;
         }
     }

value_type* operator->() const {
         if (this->core != nullptr) {
             return this->core->ptr;
         } else {
             return nullptr;
         }
     }

value_type* get() const {
         if (this->core != nullptr) {
             return this->core->ptr;
         } else {
             return nullptr;
         }
     }

operator bool() const {
         return this->core != nullptr;
     }

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

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

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

private:
     class Core {
      public:
          size_t count;
          value_type* ptr;

~Core() {
              Allocator del;
              del.deallocate(ptr, sizeof(value_type));
              this->ptr = nullptr;
          }
     };

Core* core;
};
}  // namespace smart_pointer

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