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feat: enable to use u8""_toml literal in C++20

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This commit is contained in:
ToruNiina 2020-09-16 21:24:03 +09:00
parent c8ff302c94
commit a32cd6cb61
1 changed files with 26 additions and 5 deletions
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31
toml/literal.hpp
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@ -11,12 +11,9 @@ inline namespace literals
inline namespace toml_literals
{
inline ::toml::value operator"" _toml(const char* str, std::size_t len)
// implementation
inline ::toml::value literal_internal_impl(::toml::detail::location loc)
{
::toml::detail::location
loc(/* filename = */ std::string("TOML literal encoded in a C++ code"),
/* contents = */ std::vector<char>(str, str + len));
// if there are some comments or empty lines, skip them.
using skip_line = ::toml::detail::repeat<toml::detail::sequence<
::toml::detail::maybe<::toml::detail::lex_ws>,
@ -78,8 +75,32 @@ inline ::toml::value operator"" _toml(const char* str, std::size_t len)
{
throw ::toml::syntax_error(data.unwrap_err(), source_location(loc));
}
}
inline ::toml::value operator"" _toml(const char* str, std::size_t len)
{
::toml::detail::location loc(
std::string("TOML literal encoded in a C++ code"),
std::vector<char>(str, str + len));
return literal_internal_impl(std::move(loc));
}
// value of __cplusplus in C++2a/20 mode is not fixed yet along compilers.
// So here we use the feature test macro for `char8_t` itself.
#if defined(__cpp_char8_t) && __cpp_char8_t >= 201811L
// value of u8"" literal has been changed from char to char8_t and char8_t is
// NOT compatible to char
inline ::toml::value operator"" _toml(const char8_t* str, std::size_t len)
{
::toml::detail::location loc(
std::string("TOML literal encoded in a C++ code"),
std::vector<char>(reinterpret_cast<const char*>(str),
reinterpret_cast<const char*>(str) + len));
return literal_internal_impl(std::move(loc));
}
#endif
} // toml_literals
} // literals
} // toml