parsers.hpp

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#ifndef IV_SRC_CORE_PARSERS_HPP_
#define IV_SRC_CORE_PARSERS_HPP_
 
#include "core/concepts.hpp"
 
#include <charconv>
 
namespace iv::utils
{
 
template<typename T, iv::concepts::StringRepresentable Str>
std::optional<T> parseNumber(const Str &stringNumber)
{
    std::string_view strView(stringNumber);
    T number = 0;
 
    if (not strView.empty() && strView[0] == '+')
    {
        strView.remove_prefix(1);
    }
 
    auto [p, ec] = std::from_chars(strView.data(), strView.data() + strView.size(), number);
 
    if (ec == std::errc() && p == strView.data() + strView.size())
    {
        return number;
    }
 
    return std::nullopt;
}
 
}// namespace iv::utils
 
#endif//IV_SRC_CORE_PARSERS_HPP_