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fix to_string

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This commit is contained in:
bolero-MURAKAMI 2012-04-17 02:23:41 +09:00
parent 08def386b5
commit e5391d339c
2 changed files with 126 additions and 171 deletions
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136
sprout/string/int_to_string.hpp
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@ -4,8 +4,8 @@
#include <cstddef>
#include <type_traits>
#include <sprout/config.hpp>
#include <sprout/index_tuple.hpp>
#include <sprout/string/string.hpp>
#include <sprout/string/make_string.hpp>
#include <sprout/integer/integer_digits.hpp>
#include <sprout/utility/enabler_if.hpp>
#include <sprout/detail/char_conversion.hpp>
@ -23,82 +23,34 @@ namespace sprout {
{};
namespace detail {
template<
typename Elem,
int Base,
typename IntType,
typename... Args,
typename sprout::enabler_if<(sizeof...(Args) == sprout::printed_integer_digits<IntType, Base>::value - 1)>::type = sprout::enabler
>
inline SPROUT_CONSTEXPR sprout::basic_string<Elem, sprout::printed_integer_digits<IntType, Base>::value>
int_to_string_impl_1(IntType val, bool negative, Args... args) {
return negative ? sprout::make_string_as<Elem>(static_cast<Elem>('-'), args...)
: sprout::make_string_as<Elem>(args...)
;
}
template<
typename Elem,
int Base,
typename IntType,
typename... Args,
typename sprout::enabler_if<(sizeof...(Args) < sprout::printed_integer_digits<IntType, Base>::value - 1)>::type = sprout::enabler
>
inline SPROUT_CONSTEXPR sprout::basic_string<Elem, sprout::printed_integer_digits<IntType, Base>::value>
int_to_string_impl_1(IntType val, bool negative, Args... args) {
return val == 0
? (negative ? sprout::make_string_as<Elem>(static_cast<Elem>('-'), args...)
: sprout::make_string_as<Elem>(args...)
)
: sprout::detail::int_to_string_impl_1<Elem, Base>(
val / Base,
negative,
sprout::detail::int_to_char<Elem>(negative ? -(val % Base) : val % Base, Base),
args...
)
;
}
template<typename Elem, int Base, typename IntType>
inline SPROUT_CONSTEXPR sprout::basic_string<Elem, sprout::printed_integer_digits<IntType, Base>::value>
int_to_string_impl(IntType val) {
return val == 0 ? sprout::make_string_as<Elem>(static_cast<Elem>('0'))
: sprout::detail::int_to_string_impl_1<Elem, Base>(val, val < 0)
template<typename IntType, int Base>
inline SPROUT_CONSTEXPR IntType
int_pow(int exponent) {
return exponent ? Base * sprout::detail::int_pow<IntType, Base>(exponent - 1)
: 1
;
}
template<
typename Elem,
int Base,
typename UIntType,
typename... Args,
typename sprout::enabler_if<(sizeof...(Args) == sprout::printed_integer_digits<UIntType, Base>::value)>::type = sprout::enabler
>
inline SPROUT_CONSTEXPR sprout::basic_string<Elem, sprout::printed_integer_digits<UIntType, Base>::value>
uint_to_string_impl_1(UIntType val, Args... args) {
return sprout::make_string_as<Elem>(args...);
}
template<
typename Elem,
int Base,
typename UIntType,
typename... Args,
typename sprout::enabler_if<(sizeof...(Args) < sprout::printed_integer_digits<UIntType, Base>::value)>::type = sprout::enabler
>
inline SPROUT_CONSTEXPR sprout::basic_string<Elem, sprout::printed_integer_digits<UIntType, Base>::value>
uint_to_string_impl_1(UIntType val, Args... args) {
return val == 0
? sprout::make_string_as<Elem>(args...)
: sprout::detail::uint_to_string_impl_1<Elem, Base>(
val / Base,
sprout::detail::int_to_char<Elem>(val % Base, Base),
args...
)
template<int Base, typename IntType>
inline SPROUT_CONSTEXPR int
int_digits_impl(IntType val) {
return val ? 1 + sprout::detail::int_digits_impl<Base>(val / Base)
: 0
;
}
template<typename Elem, int Base, typename UIntType>
inline SPROUT_CONSTEXPR sprout::basic_string<Elem, sprout::printed_integer_digits<UIntType, Base>::value>
uint_to_string_impl(UIntType val) {
return val == 0 ? sprout::make_string_as<Elem>(static_cast<Elem>('0'))
: sprout::detail::uint_to_string_impl_1<Elem, Base>(val)
template<int Base, typename IntType>
inline SPROUT_CONSTEXPR int
int_digits(IntType val) {
return val ? 1 + sprout::detail::int_digits_impl<Base>(val / Base)
: 1
;
}
template<int Base, typename IntType>
inline SPROUT_CONSTEXPR int
int_digit_of(IntType val, int digits) {
return val < 0 ? -((val / sprout::detail::int_pow<IntType, Base>(digits)) % Base)
: (val / sprout::detail::int_pow<IntType, Base>(digits)) % Base
;
}
@ -106,21 +58,47 @@ namespace sprout {
typename Elem,
int Base,
typename IntType,
sprout::index_t... Indexes,
typename sprout::enabler_if<std::is_signed<IntType>::value>::type = sprout::enabler
>
inline SPROUT_CONSTEXPR sprout::basic_string<Elem, sprout::printed_integer_digits<IntType, Base>::value>
int_to_string(IntType val) {
return sprout::detail::int_to_string_impl<Elem, Base>(val);
int_to_string(IntType val, int digits, sprout::index_tuple<Indexes...>) {
return val < 0 ? sprout::basic_string<Elem, sprout::printed_integer_digits<IntType, Base>::value>{
{
static_cast<Elem>('-'),
(Indexes < digits ? sprout::detail::int_to_char<Elem>(sprout::detail::int_digit_of<Base>(val, digits - 1 - Indexes))
: Elem()
)...
},
static_cast<std::size_t>(digits + 1)
}
: sprout::basic_string<Elem, sprout::printed_integer_digits<IntType, Base>::value>{
{
(Indexes < digits ? sprout::detail::int_to_char<Elem>(sprout::detail::int_digit_of<Base>(val, digits - 1 - Indexes))
: Elem()
)...
},
static_cast<std::size_t>(digits)
}
;
}
template<
typename Elem,
int Base,
typename IntType,
sprout::index_t... Indexes,
typename sprout::enabler_if<std::is_unsigned<IntType>::value>::type = sprout::enabler
>
inline SPROUT_CONSTEXPR sprout::basic_string<Elem, sprout::printed_integer_digits<IntType, Base>::value>
int_to_string(IntType val) {
return sprout::detail::uint_to_string_impl<Elem, Base>(val);
int_to_string(IntType val, int digits, sprout::index_tuple<Indexes...>) {
return sprout::basic_string<Elem, sprout::printed_integer_digits<IntType, Base>::value>{
{
(Indexes < digits ? sprout::detail::int_to_char<Elem>(sprout::detail::int_digit_of<Base>(val, digits - 1 - Indexes))
: Elem()
)...
},
static_cast<std::size_t>(digits)
};
}
} // namespace detail
@ -135,7 +113,11 @@ namespace sprout {
>
inline SPROUT_CONSTEXPR sprout::basic_string<Elem, sprout::printed_integer_digits<IntType, Base>::value>
int_to_string(IntType val) {
return sprout::detail::int_to_string<Elem, Base>(val);
return sprout::detail::int_to_string<Elem, Base>(
val,
sprout::detail::int_digits<Base>(val),
sprout::index_range<0, sprout::integer_digits<IntType, Base>::value>::make()
);
}
//