EnvironmentLoader/source/utils/utils.h

#pragma once
#include <memory>

template<class T, class... Args>
std::unique_ptr<T> make_unique_nothrow(Args &&...args) noexcept(noexcept(T(std::forward<Args>(args)...))) {
    return std::unique_ptr<T>(new (std::nothrow) T(std::forward<Args>(args)...));
}

template<typename T>
inline typename std::unique_ptr<T> make_unique_nothrow(size_t num) noexcept {
    return std::unique_ptr<T>(new (std::nothrow) std::remove_extent_t<T>[num]());
}

template<class T, class... Args>
std::shared_ptr<T> make_shared_nothrow(Args &&...args) noexcept(noexcept(T(std::forward<Args>(args)...))) {
    return std::shared_ptr<T>(new (std::nothrow) T(std::forward<Args>(args)...));
}

template<typename... Args>
std::string string_format(const std::string &format, Args... args) {
    int size_s = std::snprintf(nullptr, 0, format.c_str(), args...) + 1; // Extra space for '\0'
    auto size  = static_cast<size_t>(size_s);
    auto buf   = std::make_unique<char[]>(size);
    std::snprintf(buf.get(), size, format.c_str(), args...);
    return std::string(buf.get(), buf.get() + size - 1); // We don't want the '\0' inside
}

// those work only in powers of 2
#define ROUNDDOWN(val, align) ((val) & ~(align - 1))
#define ROUNDUP(val, align)   ROUNDDOWN(((val) + (align - 1)), align)