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Finish more complex exception specifications

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This commit is contained in:
Krystian Stasiowski
2019-12-16 13:52:55 -05:00
parent e26c470c3a
commit 81dbac7ce9
2 changed files with 39 additions and 11 deletions
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32
include/boost/static_string/detail/static_string.hpp
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@ -39,6 +39,28 @@ using smallest_width =
typename std::conditional<(N <= (std::numeric_limits<unsigned long long>::max)()), unsigned long long,
void>::type>::type>::type>::type>::type;
// std::is_nothrow_convertible is C++20
template<typename To>
void is_nothrow_convertible_helper(To) noexcept;
// MSVC is unable to parse this inline, so a helper is needed
template<typename From, typename To, typename =
decltype(is_nothrow_convertible_helper<To>(std::declval<From>()))>
struct is_nothrow_convertible_msvc_helper
{
static const bool value =
noexcept(is_nothrow_convertible_helper<To>(std::declval<From>()));
};
template<typename From, typename To, typename = void>
struct is_nothrow_convertible
: std::false_type { };
template<typename From, typename To>
struct is_nothrow_convertible<From, To, typename std::enable_if<
is_nothrow_convertible_msvc_helper<From, To>::value>::type>
: std::true_type { };
// Optimization for using the smallest possible type
template<std::size_t N, typename CharT, typename Traits>
class static_string_base_zero
@ -208,7 +230,7 @@ inline
int
lexicographical_compare(
CharT const* s1, std::size_t n1,
CharT const* s2, std::size_t n2)
CharT const* s2, std::size_t n2) noexcept
{
if(n1 < n2)
return Traits::compare(
@ -224,7 +246,7 @@ inline
int
lexicographical_compare(
basic_string_view<CharT, Traits> s1,
CharT const* s2, std::size_t n2)
CharT const* s2, std::size_t n2) noexcept
{
return detail::lexicographical_compare<
CharT, Traits>(s1.data(), s1.size(), s2, n2);
@ -235,7 +257,7 @@ inline
int
lexicographical_compare(
const basic_static_string<N, CharT, Traits>& s1,
CharT const* s2, std::size_t n2)
CharT const* s2, std::size_t n2) noexcept
{
return detail::lexicographical_compare<
CharT, Traits>(s1.data(), s1.size(), s2, n2);
@ -246,7 +268,7 @@ inline
int
lexicographical_compare(
basic_string_view<CharT, Traits> s1,
basic_string_view<CharT, Traits> s2)
basic_string_view<CharT, Traits> s2) noexcept
{
return detail::lexicographical_compare<CharT, Traits>(
s1.data(), s1.size(), s2.data(), s2.size());
@ -257,7 +279,7 @@ inline
int
lexicographical_compare(
const basic_static_string<N, CharT, Traits>& s1,
const basic_static_string<M, CharT, Traits>& s2)
const basic_static_string<M, CharT, Traits>& s2) noexcept
{
return detail::lexicographical_compare<CharT, Traits>(
s1.data(), s1.size(), s2.data(), s2.size());