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

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5785689

Пользователь

Бурачинский Александр Дмитриевич

Время

16:20<< 16.11.2021 16:38 (27 д. 14:39) 16:39>>

Обработка

16:38 ... 16:38 (2,95 сек.)

Файл

5785689.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 [?]

LI	Ошибка проверки исходного кода

код | результаты

SmartPointer.hpp:152:  private: should be indented +1 space inside class SmartPointer  [whitespace/indent] [3]
Done processing SmartPointer.hpp
Total errors found: 1

[печатать | | ]

≡

#pragma once

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

namespace smart_pointer {
// `exception` class definition
class exception : std::exception {
    using base_class = std::exception;
    using base_class::base_class;
};

// `SmartPointer` class declaration
template <
    typename T,
    typename Allocator
>
class SmartPointer {
    // don't remove this macro
     ENABLE_CLASS_TESTS;

public:
    using value_type = T;
    explicit SmartPointer(value_type* x = nullptr) {
        if (x != nullptr) {
            core = new Core(x);
            core->c++;
        } else {
            core = nullptr;
            }
        }

// copy constructor
    SmartPointer(const SmartPointer& other) {
        core = other.core;
        if (core != nullptr) {
            core->c++;
            }
        }
    // move constructor
    SmartPointer(SmartPointer&& other) noexcept {
        core = other.core;
        other.core = nullptr;
    }

// copy assigment
    SmartPointer &operator=(const SmartPointer& other) {
         if (core != nullptr) {
             if (core->c > 1) {
                core->c--;
             } else {
                delete (core);
             }
         }
         core = other.core;
         if (core != nullptr) {
             other.core->c++;
         }
         return *this;
    }
     // move assigment
    SmartPointer &operator=(SmartPointer&& other) {
         core = other.core;
         delete other.core->p;
         other.core = nullptr;
         return *this;
    }

SmartPointer &operator=(value_type* other) {
         if (core != nullptr) {
             if (core->c > 1) {
                 core->c--;
             } else {
                delete (core);
             }
         }
         if (other != nullptr) {
             core = new Core(other);
         } else {
             core = nullptr;
         }
         return *this;
    }

~SmartPointer() {
        if (core != nullptr) {
            core = nullptr;
        }
    }

// return reference to the object of class/type T
    // if SmartPointer contains nullptr throw `SmartPointer::exception`
    value_type& operator*() {
        if (core == nullptr) {
            throw smart_pointer::exception();
        }
        return *core->p;
    }

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

// return pointer to the object of class/type T
    value_type* operator->() const {
        if (core != nullptr) {
            return core->p;
        }
        return nullptr;
    }

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

// if pointer == nullptr => return false
    explicit operator bool() const {
        return (core != nullptr);
    }

// if pointers points to the same address or both null => true
    template <typename U, typename AnotherAllocator>
    bool operator==(const SmartPointer<U, AnotherAllocator>& other) const {
        if (core != nullptr) {
            return (core->p == reinterpret_cast<value_type*>(other.get()));
        } else {
            return (other.get() == nullptr);
        }
    }

// if pointers points to the same address or both null => false
    template <typename U, typename AnotherAllocator>
    bool operator!=(const SmartPointer<U, AnotherAllocator>& other) const {
        return !(*this == other);
    }

// if smart pointer contains non-nullptr => return count owners
    // if smart pointer contains nullptr => return 0
    std::size_t count_owners() const {
        if (core == nullptr) {
            return 0;
        }
        return core->c;
    }

private:
        class Core {
         public:
            explicit Core(value_type* x) : p(x) {}
            size_t c = 0;
            value_type* p;
        };
        Core* core;
};
}  // namespace smart_pointer

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