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

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5769690

Пользователь

Смагина Елена Геннадьевна

Время

13:36<< 14.11.2021 13:37 (25 д. 11:38) 13:38>>

Обработка

13:37 ... 13:37 (1,60 сек.)

Файл

5769690.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:2:  Weird number of spaces at line-start.  Are you using a 2-space indent?  [whitespace/indent] [3]
SmartPointer.hpp:2:  Line ends in whitespace.  Consider deleting these extra spaces.  [whitespace/end_of_line] [4]
SmartPointer.hpp:5:  Line ends in whitespace.  Consider deleting these extra spaces.  [whitespace/end_of_line] [4]
SmartPointer.hpp:12:  Weird number of spaces at line-start.  Are you using a 2-space indent?  [whitespace/indent] [3]
SmartPointer.hpp:12:  Line ends in whitespace.  Consider deleting these extra spaces.  [whitespace/end_of_line] [4]
SmartPointer.hpp:24:  Line ends in whitespace.  Consider deleting these extra spaces.  [whitespace/end_of_line] [4]
Done processing SmartPointer.hpp
Total errors found: 6

[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;

// constructor
    explicit SmartPointer(value_type* p = nullptr) : core(new Core(p)) {
        //  
        core->AddRef();
    }

// copy constructor
    SmartPointer(const SmartPointer& optr) : core(optr.core) { core->AddRef(); }

// move constructor
    SmartPointer(SmartPointer&&) = default;

// copy assigment
    SmartPointer& operator=(const SmartPointer&) = default;

// move assigment
    SmartPointer& operator=(SmartPointer&& sp) {
        if (this != &sp) {
            if (core->Release() == 0) {
                delete core;
            }

core = sp.core;
            core->AddRef();
        }
        return *this;
    }

//
    SmartPointer& operator=(value_type* other) {
        core->p = other;
        core->AddRef();
        return *this;
    }

~SmartPointer() {
        if (core->Release() == 0) delete core;
    }

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

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

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

value_type* get() const { return core->p; }

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

// if pointers points to the same address or both null => true
    template <typename U, typename AnotherAllocator>
    bool operator==(const SmartPointer<U, AnotherAllocator>& pp) const {
        return static_cast<void*>(core->p) == static_cast<void*>(pp.core->p);
    }

// 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 static_cast<void*>(other.core->p) != static_cast<void*>(core->p);
    }

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

public:
    class Core {
     public:
        value_type* p;
        size_t c;

explicit Core(value_type* _p = nullptr) : p(_p), c(0) {}

void AddRef() { ++c; }

int Release() { return --c; }

~Core() {
            if (p != nullptr) delete p;
        }
    };
    Core* core;
};
}  // namespace smart_pointer

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