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refactor: move key_cast to utility

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ToruNiina 2024-06-28 00:18:46 +09:00
parent 3320d25abb
commit a4d0189df3
2 changed files with 43 additions and 48 deletions
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50
include/toml11/find.hpp
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@ -4,6 +4,7 @@
#include <algorithm>
#include "get.hpp"
#include "utility.hpp"
#include "value.hpp"
#if defined(TOML11_HAS_STRING_VIEW)
@ -101,54 +102,7 @@ find(basic_value<TC>&& v, const std::size_t idx)
}
// --------------------------------------------------------------------------
// toml::find(toml::value, toml::key, Ts&& ... keys)
namespace detail
{
// It suppresses warnings by -Wsign-conversion when we pass integer literal
// to toml::find. integer literal `0` is deduced as an int, and will be
// converted to std::size_t. This causes sign-conversion.
template<typename TC>
std::size_t key_cast(const std::size_t& v) noexcept
{
return v;
}
template<typename TC, typename T>
cxx::enable_if_t<std::is_integral<cxx::remove_cvref_t<T>>::value, std::size_t>
key_cast(const T& v) noexcept
{
return static_cast<std::size_t>(v);
}
// for string-like (string, string literal, string_view)
template<typename TC>
typename basic_value<TC>::key_type const&
key_cast(const typename basic_value<TC>::key_type& v) noexcept
{
return v;
}
template<typename TC>
typename basic_value<TC>::key_type
key_cast(const typename basic_value<TC>::key_type::value_type* v)
{
return typename basic_value<TC>::key_type(v);
}
#if defined(TOML11_HAS_STRING_VIEW)
template<typename TC>
typename basic_value<TC>::key_type
key_cast(const std::string_view v)
{
return typename basic_value<TC>::key_type(v);
}
#endif // string_view
} // detail
// ----------------------------------------------------------------------------
// find(v, keys...)
// toml::find(toml::value, toml::key, Ts&& ... keys) w/o conversion
template<typename TC, typename K1, typename K2, typename ... Ks>
cxx::enable_if_t<detail::is_type_config<TC>::value, basic_value<TC>> const&

41
include/toml11/utility.hpp
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@ -99,6 +99,47 @@ inline std::string make_string(std::size_t len, char c)
return std::string(len, c);
}
// ---------------------------------------------------------------------------
// It suppresses warnings by -Wsign-conversion when we pass integer literal
// to toml::find. integer literal `0` is deduced as an int, and will be
// converted to std::size_t. This causes sign-conversion.
template<typename TC>
std::size_t key_cast(const std::size_t& v) noexcept
{
return v;
}
template<typename TC, typename T>
cxx::enable_if_t<std::is_integral<cxx::remove_cvref_t<T>>::value, std::size_t>
key_cast(const T& v) noexcept
{
return static_cast<std::size_t>(v);
}
// for string-like (string, string literal, string_view)
template<typename TC>
typename basic_value<TC>::key_type const&
key_cast(const typename basic_value<TC>::key_type& v) noexcept
{
return v;
}
template<typename TC>
typename basic_value<TC>::key_type
key_cast(const typename basic_value<TC>::key_type::value_type* v)
{
return typename basic_value<TC>::key_type(v);
}
#if defined(TOML11_HAS_STRING_VIEW)
template<typename TC>
typename basic_value<TC>::key_type
key_cast(const std::string_view v)
{
return typename basic_value<TC>::key_type(v);
}
#endif // string_view
} // namespace detail
} // namespace toml
#endif // TOML11_UTILITY_HPP