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

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5982304

Пользователь

Борцов Роман Александрович

Время

17:08<< 14.01.2022 17:15 (0:11) 17:17>>

Обработка

17:15 ... 17:15 (5,75 сек.)

Файл

5982304.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:8:  Do not indent within a namespace  [runtime/indentation_namespace] [4]
SmartPointer.hpp:18:  Do not indent within a namespace  [runtime/indentation_namespace] [4]
SmartPointer.hpp:22:  public: should be indented +1 space inside class SmartPointer  [whitespace/indent] [3]
SmartPointer.hpp:23:  Do not leave a blank line after "public:"  [whitespace/blank_line] [3]
SmartPointer.hpp:196:  private: should be indented +1 space inside class SmartPointer  [whitespace/indent] [3]
SmartPointer.hpp:197:  Do not leave a blank line after "private:"  [whitespace/blank_line] [3]
SmartPointer.hpp:199:  public: should be indented +1 space inside class Core  [whitespace/indent] [3]
Done processing SmartPointer.hpp
Total errors found: 7

[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:

explicit SmartPointer(T *p = nullptr) {
            if (p == nullptr) {
                core = nullptr;
            } else {
                core = new Core;
                core->myObj = p;
                core->pCount = 1;
            }
        }

// copy constructor
        SmartPointer(const SmartPointer &p) {
            if (core != nullptr) {
                if (core->pCount > 1) {
                    core->pCount -= 1;
                } else {
                    delete core->myObj;
                    delete core;
                    core = new Core;
                }
            }
            core = p.core;
            if (core != nullptr)
                core->pCount += 1;
        }

// move constructor
        SmartPointer(SmartPointer &&p) {
            if (core != nullptr) {
                if (core->pCount > 1) {
                    core->pCount -= 1;
                } else {
                    delete core->myObj;
                    delete core;
                    core = new Core;
                }
            }
            core = p.core;
            if (p.core != nullptr)
                p.core = nullptr;
        }

~SmartPointer() {
            if (core == nullptr) {
                delete core;
            } else if (core->pCount > 1) {
                core->pCount -= 1;
            } else {
                if (core->myObj != nullptr) {
                    delete core->myObj;
                }
                delete core;
            }
        }

// move assigment
        SmartPointer &operator=(SmartPointer &&p) {
            if (core != nullptr) {
                if (core->pCount > 1) {
                    core->pCount -= 1;
                } else {
                    delete core->myObj;
                    delete core;
                }
            }
            core = p.core;
            if (core != nullptr) {
                p.core = nullptr;
            }
            return *this;
        }

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

SmartPointer &operator=(T *p) {
            if (core != nullptr) {
                if (core->pCount > 1) {
                    core->pCount -= 1;
                } else {
                    delete core->myObj;
                    delete core;
                    core = new Core;
                }
            } else {
                core = new Core;
            }
            if (p != nullptr) {
                core->myObj = p;
            } else {
                delete core;
                core = nullptr;
            }
            if (core != nullptr)
                core->pCount = 1;
            return *this;
        }

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

const T &operator*() const {
            if (get() == nullptr) {
                throw exception();
            } else {
                return *core->myObj;
            }
        }

// return pointer to the object of class/type T
        T *operator->() const {
            return core ? core->myObj : nullptr;
        }

T *get() const {
            return core ? core->myObj : nullptr;
        }

// if pointer == nullptr => return false
        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> &p) const {
            return (p.get() == nullptr && get() == nullptr) ||
            (p.get() != nullptr && get() != nullptr &&
            *p.get() == *get() &&
            static_cast<void *>(p.get()) == static_cast<void *>(get()));
        }

// if pointers points to the same address or both null => false
        template<typename U, typename AnotherAllocator>
        bool operator!=(const SmartPointer<U, AnotherAllocator> &p) const {
            return !((p.get() == nullptr && get() == nullptr) ||
            (p.get() != nullptr && get() != nullptr &&
            *p.get() == *get() &&
            static_cast<void *>(p.get()) ==
            static_cast<void *>(get())));
        }

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

private:

class Core {
        public:
            T *myObj;
            std::size_t pCount;
        };

Core *core = nullptr;
    };
}  // namespace smart_pointer

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