String.cpp

#include "String.hpp"

_STR::String(const char *ptr) {
    size = std::strlen(ptr);
    char bits = 1; // Because number of bits is less than 255, I will use char bcoz 1 byte as it also.
    if (size != 0) {
        bits = __builtin_clz(size);
        if (bits != sizeof(int) * 8) {
            bits++;
        }
    }
    data = new char[1 << bits];
    if (data == nullptr) {
        std::cerr << _k_mem_err;
        throw EC::BAD_ALLOC;
    }
    std::memcpy(data, ptr, size);
}

_STR::String(const String &str): size(str.size) {
    data = new char[size];
    if (data == nullptr) {
        std::cerr << _k_mem_err;
        throw EC::BAD_ALLOC;
    }
    std::memcpy(data, str.data, size);
}

_STR::String(String &&str) noexcept: size(str.size), data(str.data) {
    str.data = nullptr;
    str.size = 0;
}

String& _STR::operator=(const String &str) {
    if (this == &str) return *this;
    if (data != nullptr) delete[] data;
    size = str.size;
    data = new char[size];
    if (data == nullptr) {
        std::cerr << _k_mem_err;
        throw EC::BAD_ALLOC;
    }
    std::memcpy(data, str.data, size);
    return *this;
}

String& _STR::operator=(String &&str) noexcept {
    if (this == &str) return *this;
    if (data != nullptr) delete[] data;
    size = str.size;
    data = str.data;
    str.size = 0;
    str.data = nullptr;
}

inline const char& _STR::operator[](const unsigned int index) const noexcept {
    return *(data + index);
}

_STR::~String() {
    delete[] data;
}