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add from_string, stol, stoul, stod, and more...

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bolero-MURAKAMI 2012-04-16 13:32:47 +09:00
parent 686d1bf67a
commit c901c3058a
9 changed files with 554 additions and 270 deletions
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139
sprout/string/string_to_int.hpp Normal file
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#ifndef SPROUT_STRING_STRING_TO_INT_HPP
#define SPROUT_STRING_STRING_TO_INT_HPP
#include <cstddef>
#include <string>
#include <type_traits>
#include <sprout/config.hpp>
#include <sprout/string/string.hpp>
#include <sprout/cstdlib/str_to_int.hpp>
#include <sprout/utility/enabler_if.hpp>
namespace sprout {
namespace detail {
template<
typename IntType,
typename Elem,
std::size_t N,
typename Traits
>
inline IntType string_to_int_dynamic(sprout::basic_string<Elem, N, Traits> const& str, std::size_t* idx, int base = 10) {
Elem* endptr = nullptr;
IntType result = sprout::detail::str_to_int<IntType>(str.c_str(), &endptr, base);
*idx = endptr - str.c_str();
return result;
}
}
//
// string_to_int
//
template<
typename IntType,
typename Elem,
std::size_t N,
typename Traits,
typename sprout::enabler_if<std::is_integral<IntType>::value>::type = sprout::enabler
>
inline SPROUT_CONSTEXPR IntType string_to_int(sprout::basic_string<Elem, N, Traits> const& str, std::size_t* idx, int base = 10) {
return !idx ? sprout::detail::str_to_int<IntType>(str.begin(), base)
: sprout::detail::string_to_int_dynamic<IntType>(str, idx, base)
;
}
template<
typename IntType,
typename Elem,
std::size_t N,
typename Traits,
typename sprout::enabler_if<std::is_integral<IntType>::value>::type = sprout::enabler
>
inline SPROUT_CONSTEXPR IntType string_to_int(sprout::basic_string<Elem, N, Traits> const& str, int base = 10) {
return sprout::detail::str_to_int<IntType>(str.begin(), base);
}
//
// stoi
//
template<typename Elem, std::size_t N, typename Traits>
inline SPROUT_CONSTEXPR int stoi(sprout::basic_string<Elem, N, Traits> const& str, std::size_t* idx, int base = 10) {
return sprout::string_to_int<int>(str, idx, base);
}
template<typename Elem, std::size_t N, typename Traits>
inline SPROUT_CONSTEXPR int stoi(sprout::basic_string<Elem, N, Traits> const& str, int base = 10) {
return sprout::string_to_int<int>(str, base);
}
//
// stol
//
template<typename Elem, std::size_t N, typename Traits>
inline SPROUT_CONSTEXPR long stol(sprout::basic_string<Elem, N, Traits> const& str, std::size_t* idx, int base = 10) {
return sprout::string_to_int<long>(str, idx, base);
}
template<typename Elem, std::size_t N, typename Traits>
inline SPROUT_CONSTEXPR long stol(sprout::basic_string<Elem, N, Traits> const& str, int base = 10) {
return sprout::string_to_int<long>(str, base);
}
//
// stoul
//
template<typename Elem, std::size_t N, typename Traits>
inline SPROUT_CONSTEXPR unsigned long stoul(sprout::basic_string<Elem, N, Traits> const& str, std::size_t* idx, int base = 10) {
return sprout::string_to_int<unsigned long>(str, idx, base);
}
template<typename Elem, std::size_t N, typename Traits>
inline SPROUT_CONSTEXPR unsigned long stoul(sprout::basic_string<Elem, N, Traits> const& str, int base = 10) {
return sprout::string_to_int<unsigned long>(str, base);
}
//
// stoll
//
template<typename Elem, std::size_t N, typename Traits>
inline SPROUT_CONSTEXPR long long stoll(sprout::basic_string<Elem, N, Traits> const& str, std::size_t* idx, int base = 10) {
return sprout::string_to_int<long long>(str, idx, base);
}
template<typename Elem, std::size_t N, typename Traits>
inline SPROUT_CONSTEXPR long long stoll(sprout::basic_string<Elem, N, Traits> const& str, int base = 10) {
return sprout::string_to_int<long long>(str, base);
}
//
// stoull
//
template<typename Elem, std::size_t N, typename Traits>
inline SPROUT_CONSTEXPR unsigned long long stoull(sprout::basic_string<Elem, N, Traits> const& str, std::size_t* idx, int base = 10) {
return sprout::string_to_int<unsigned long long>(str, idx, base);
}
template<typename Elem, std::size_t N, typename Traits>
inline SPROUT_CONSTEXPR unsigned long long stoull(sprout::basic_string<Elem, N, Traits> const& str, int base = 10) {
return sprout::string_to_int<unsigned long long>(str, base);
}
//
// from_string
//
template<
typename IntType,
typename Elem,
std::size_t N,
typename Traits,
typename sprout::enabler_if<std::is_integral<IntType>::value>::type = sprout::enabler
>
inline SPROUT_CONSTEXPR IntType from_string(sprout::basic_string<Elem, N, Traits> const& str, std::size_t* idx) {
return sprout::string_to_int<IntType>(str, idx);
}
template<
typename IntType,
typename Elem,
std::size_t N,
typename Traits,
typename sprout::enabler_if<std::is_integral<IntType>::value>::type = sprout::enabler
>
inline SPROUT_CONSTEXPR IntType from_string(sprout::basic_string<Elem, N, Traits> const& str) {
return sprout::string_to_int<IntType>(str);
}
} // namespace sprout
#endif // #ifndef SPROUT_STRING_STRING_TO_INT_HPP