#ifndef Movable_hpp

#define Movable_hpp

#include <iostream>

#include <cstdint>

#include <cstring>

class Movable {

char *str;

const std::size_t id;

inline static std::size_t index{};

inline static std::ostream& os = std::cerr;

char *dup(const char *s1) {

auto len = strlen(s1);

auto s2 = new char[len + 1];

memcpy(s2, s1, len + 1);

return s2;

}

public:

Movable() : str{ nullptr }, id{ ++index } {

os << "Construct empty Movable with id " << id << '\n';

}

Movable(const char *s) : str{ dup(s) }, id{ ++index } {

os << "Construct Movable with id " << id << " and content: " << str << '\n';

}

Movable(const Movable& rhs) : str{ dup(rhs.str) }, id{ ++index } {

os << "Copy-construct Movable with id " << id << " from id " << rhs.id << '\n';

}

Movable(Movable&& rhs) : str{ rhs.str }, id{ ++index } {

rhs.str = nullptr;

os << "Move-construct Movable with id " << id << " from id " << rhs.id << '\n';

}

Movable& operator=(const Movable& rhs) {

char *str1 = dup(rhs.str);

delete[] str;

str = str1;

os << "Copy-assign Movable with id " << id << " from id " << rhs.id << '\n';

return *this;

}

Movable& operator=(Movable&& rhs) {

delete[] str;

str = rhs.str;

rhs.str = nullptr;

os << "Move-assign Movable with id " << id << " from id " << rhs.id << '\n';

return *this;

}

~Movable() {

os << "Delete Movable with id " << id << '\n';

delete[] str;

}

void print(std::ostream& out = std::cout) {

out << id << ": ";

if (str) {

out << str << '\n';

}

else {

out << "(No data)\n";

}

}

};

#endif // Movable_hpp