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I think this makes capabilities much simpler and more reliable.

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But the capabilities are now limited to a single param -- Time to change that?
This commit is contained in:
ADAM David Alan Martin
2024-01-27 04:21:27 -05:00
parent e8b41a0116
commit 9c9ed65312
5 changed files with 57 additions and 81 deletions
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10
comparisons.h
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@ -28,16 +28,10 @@ namespace Alepha::Hydrogen
namespace exports
{
using detail::comparisons_m::comparable;
inline constexpr Meta::type_value< comparable > comparable_capability;
}
template< typename T >
constexpr bool has_comparable_capability_v= has_capability( Meta::type_value< std::decay_t< T > >{}, comparable_capability );
template< typename T >
struct has_comparable_capability_s : std::bool_constant< has_comparable_capability_v< T > > {};
inline constexpr Meta::trait< has_comparable_capability_s > has_comparable_capability;
constexpr bool has_comparable_capability_v= HasCapability< std::decay_t< T >, comparable >;
// Spaceship lens support
@ -54,7 +48,7 @@ namespace Alepha::Hydrogen
template
<
typename T,
typename= std::enable_if_t< has_comparable_capability( Meta::type_value< T >{} ) >,
typename= std::enable_if_t< has_comparable_capability_v< T > >,
typename= std::enable_if_t< has_spaceship_lens_member_v< T > >,
overload< __LINE__ > = nullptr
>