#include <climits>
#include <stdexcept>

#include "numberhelper.h"

unsigned long long to_ull(const std::string& str) {
    char* endptr;

    errno = 0;
    unsigned long long ret = strtoull(str.c_str(), &endptr, 10);
    if (ret > ULLONG_MAX && errno == ERANGE) {
        throw std::overflow_error(str + " is too big");
    } else if (endptr[0] != '\0') {
        throw std::invalid_argument(str + " has trailing text");
    }
    return ret;
}

int to_int(const std::string& str) {
    char* endptr;

    long ret = strtol(str.c_str(), &endptr, 10);
    if (ret > INT_MAX) {
        throw std::overflow_error(str + " is too big");
    } else if (ret < INT_MIN) {
        throw std::underflow_error(str + " is too small");
    } else if (endptr[0] != '\0') {
        throw std::invalid_argument(str + " has trailing text");
    }
    return static_cast<int>(ret);
}