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

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5926207

Пользователь

Абакаев Дени Исмаилович

Время

22.12.2021 13:03 (31 д. 19:03) 13:11>>

Обработка

13:03 ... 13:03 (4,16 сек.)

Файл

5926207.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:6:  Do not indent within a namespace  [runtime/indentation_namespace] [4]
SmartPointer.hpp:12:  Do not indent within a namespace  [runtime/indentation_namespace] [4]
SmartPointer.hpp:15:  public: should be indented +1 space inside class SmartPointer  [whitespace/indent] [3]
SmartPointer.hpp:122:  private: should be indented +1 space inside class SmartPointer  [whitespace/indent] [3]
SmartPointer.hpp:124:  public: should be indented +1 space inside class Core  [whitespace/indent] [3]
SmartPointer.hpp:154:  private: should be indented +1 space inside class Core  [whitespace/indent] [3]
SmartPointer.hpp:161:  Namespace should be terminated with "// namespace smart_pointer"  [readability/namespace] [5]
Done processing SmartPointer.hpp
Total errors found: 7

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≡

#include <memory>
#include <type_traits>
#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 *value = nullptr) {
            if (value)
                core = new Core(value);
            else
                core = nullptr;
        }

SmartPointer(const SmartPointer &A) {
            core = A.core;
            if (*this)
                core->Increment();
        }

SmartPointer(SmartPointer &&A) {
            core = A.core;
            A.core = nullptr;
        }

SmartPointer &operator=(const SmartPointer &A) {
            this->~SmartPointer();
            core = A.core;
            if (*this)
                core->Increment();
            return *this;
        }

SmartPointer &operator=(SmartPointer &&A) {
            this->~SmartPointer();
            core = A.core;
            A.core = nullptr;
            return *this;
        }

SmartPointer &operator=(value_type *A) {
            this->~SmartPointer();
            if (A)
                core = new Core(A);
            else
                core = nullptr;
            return *this;
        }

~SmartPointer() {
            if (*this) {
                core->Decrement();
                if (core->CountOwners() == 0)
                    delete core;
            }
        }

value_type &operator*() {
            if (!*this)
                throw smart_pointer::exception();
            return *(core->Value());
        }

const value_type &operator*() const {
            if (!*this)
                throw smart_pointer::exception();
            return *(core->Value());
        }

value_type *operator->() const {
            if (*this)
                return core->Value();
            return nullptr;
        }

value_type *get() const {
            if (*this)
                return core->Value();
            return nullptr;
        }

explicit operator bool() const {
            return !(core == nullptr || core->Value() == nullptr);
        }

template<typename U, typename AnotherAllocator>
        bool operator==(const SmartPointer<U, AnotherAllocator> &A) const {
            if (!*this && !A)
                return true;
            if (!std::is_same<T, U>::value)
                return false;
            return reinterpret_cast<void *>(get()) ==
                   reinterpret_cast<void *>(A.get());
        }

template<typename U, typename AnotherAllocator>
        bool operator!=(const SmartPointer<U, AnotherAllocator> &A) const {
            if (!*this && !A)
                return false;
            if (!std::is_same<T, U>::value)
                return true;
            return reinterpret_cast<void *>(get()) !=
                   reinterpret_cast<void *>(A.get());
        }

[[nodiscard]] std::size_t count_owners() const {
            if (*this)
                return core->CountOwners();
            return 0;
        }

private:
        class Core {
        public:
            explicit Core(value_type *value) : value_(value), count_owners_(0) {
                Increment();
            }

~Core() {
                delete value_;
                value_ = nullptr;
            }

value_type *Value() {
                return value_;
            }

value_type *Value() const {
                return value_;
            }

void Increment() {
                count_owners_++;
            }

void Decrement() {
                count_owners_--;
            }

[[nodiscard]] std::size_t CountOwners() const {
                return count_owners_;
            }

private:
            value_type *value_;
            std::size_t count_owners_;
        };

Core *core;
    };
}

(4 250 b)

0.071s 0.015s 10