BlackMATov/meta.hpp
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fix uvalue index traits

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ref: https://github.com/BlackMATov/meta.hpp/issues/100
This commit is contained in:
BlackMATov
2024-09-05 07:28:05 +07:00
parent 41855b3ed7
commit 774d0c04c2
3 changed files with 44 additions and 6 deletions
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25
headers/meta.hpp/meta_detail/value_traits/index_traits.hpp
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@@ -9,6 +9,8 @@
#include "../../meta_base.hpp"
#include "../../meta_uvalue.hpp"
#include "copy_traits.hpp"
namespace meta_hpp::detail
{
template < typename T >
@@ -22,7 +24,7 @@ namespace meta_hpp::detail
namespace meta_hpp::detail
{
template < typename T >
requires std::is_copy_constructible_v<T>
requires has_copy_traits<T>
struct index_traits<T*> {
uvalue operator()(T* v, std::size_t i) const {
// NOLINTNEXTLINE(*-pointer-arithmetic)
@@ -31,7 +33,7 @@ namespace meta_hpp::detail
};
template < typename T, std::size_t Size >
requires std::is_copy_constructible_v<T>
requires has_copy_traits<T>
struct index_traits<std::array<T, Size>> {
uvalue operator()(const std::array<T, Size>& v, std::size_t i) const {
return i < v.size() ? uvalue{v[i]} : uvalue{};
@@ -39,7 +41,7 @@ namespace meta_hpp::detail
};
template < typename T, typename Traits, typename Allocator >
requires std::is_copy_constructible_v<T>
requires has_copy_traits<T>
struct index_traits<std::basic_string<T, Traits, Allocator>> {
uvalue operator()(const std::basic_string<T, Traits, Allocator>& v, std::size_t i) const {
return i < v.size() ? uvalue{v[i]} : uvalue{};
@@ -47,7 +49,7 @@ namespace meta_hpp::detail
};
template < typename T, typename Traits >
requires std::is_copy_constructible_v<T>
requires has_copy_traits<T>
struct index_traits<std::basic_string_view<T, Traits>> {
uvalue operator()(const std::basic_string_view<T, Traits>& v, std::size_t i) const {
return i < v.size() ? uvalue{v[i]} : uvalue{};
@@ -55,7 +57,7 @@ namespace meta_hpp::detail
};
template < typename T, std::size_t Extent >
requires std::is_copy_constructible_v<T>
requires has_copy_traits<T>
struct index_traits<std::span<T, Extent>> {
uvalue operator()(const std::span<T, Extent>& v, std::size_t i) const {
return i < v.size() ? uvalue{v[i]} : uvalue{};
@@ -63,10 +65,21 @@ namespace meta_hpp::detail
};
template < typename T, typename Allocator >
requires std::is_copy_constructible_v<T>
requires has_copy_traits<T>
struct index_traits<std::vector<T, Allocator>> {
uvalue operator()(const std::vector<T, Allocator>& v, std::size_t i) const {
return i < v.size() ? uvalue{v[i]} : uvalue{};
}
};
}
#define META_HPP_DECLARE_INDEX_TRAITS_FOR(T) \
namespace meta_hpp::detail \
{ \
template <> \
struct index_traits<T> { \
uvalue operator()(const T& v, std::size_t i) const { \
return uvalue{v[i]}; \
} \
}; \
}