mirror of
https://github.com/bolero-MURAKAMI/Sprout
synced 2024-11-12 21:09:01 +00:00
54 lines
2 KiB
C++
54 lines
2 KiB
C++
/*=============================================================================
|
|
Copyright (c) 2011-2014 Bolero MURAKAMI
|
|
https://github.com/bolero-MURAKAMI/Sprout
|
|
|
|
Distributed under the Boost Software License, Version 1.0. (See accompanying
|
|
file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
|
|
=============================================================================*/
|
|
#ifndef SPROUT_DETAIL_CHAR_CONVERSION_HPP
|
|
#define SPROUT_DETAIL_CHAR_CONVERSION_HPP
|
|
|
|
#include <stdexcept>
|
|
#include <sprout/config.hpp>
|
|
#include <sprout/workaround/std/cstddef.hpp>
|
|
#include <sprout/ctype/ascii.hpp>
|
|
#include <sprout/assert.hpp>
|
|
|
|
namespace sprout {
|
|
namespace detail {
|
|
template<typename Elem, typename IntType>
|
|
inline SPROUT_CONSTEXPR Elem
|
|
int_to_char(IntType val, int base) {
|
|
return SPROUT_ASSERT(2 <= base && base <= 36), SPROUT_ASSERT(IntType(0) <= val && val < static_cast<IntType>(base)),
|
|
val < 10 ? static_cast<Elem>('0') + val
|
|
: static_cast<Elem>('a') + (val - 10)
|
|
;
|
|
}
|
|
template<typename Elem, typename IntType>
|
|
inline SPROUT_CONSTEXPR Elem
|
|
int_to_char(IntType val) {
|
|
return SPROUT_ASSERT(IntType(0) <= val && val < IntType(10)),
|
|
static_cast<Elem>('0') + val
|
|
;
|
|
}
|
|
|
|
template<typename IntType, typename Elem>
|
|
inline SPROUT_CONSTEXPR IntType
|
|
char_to_int(Elem c, int base) {
|
|
return sprout::ascii::isdigit(c) && c - static_cast<Elem>('0') < base ? c - static_cast<Elem>('0')
|
|
: sprout::ascii::islower(c) && c - static_cast<Elem>('a') + 10 < base ? c - static_cast<Elem>('a') + 10
|
|
: sprout::ascii::isupper(c) && c - static_cast<Elem>('A') + 10 < base ? c - static_cast<Elem>('A') + 10
|
|
: static_cast<IntType>(-1)
|
|
;
|
|
}
|
|
template<typename IntType, typename Elem>
|
|
inline SPROUT_CONSTEXPR IntType
|
|
char_to_int(Elem c) {
|
|
return sprout::ascii::isdigit(c) ? c - static_cast<Elem>('0')
|
|
: static_cast<IntType>(-1)
|
|
;
|
|
}
|
|
} // namespace detail
|
|
} // namespace sprout
|
|
|
|
#endif // #ifndef SPROUT_DETAIL_CHAR_CONVERSION_HPP
|