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Started a rewrite... but now I'm going to try it with friends?

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ADAM David Alan Martin
2024-01-26 23:17:22 -05:00
parent 08654a9a86
commit e8b41a0116
3 changed files with 65 additions and 93 deletions
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2
Buffer.h
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@ -235,7 +235,7 @@ namespace Alepha::Hydrogen ::detail:: Buffer_m
struct BufferModel_capability {}; struct BufferModel_capability {};
template< typename T > template< typename T >
concept UndecayedBufferModelable= Capability< T, BufferModel_capability >; concept UndecayedBufferModelable= HasCapability< T, BufferModel_capability >;
template< typename T > template< typename T >
concept BufferModelable= UndecayedBufferModelable< std::decay_t< T > >; concept BufferModelable= UndecayedBufferModelable< std::decay_t< T > >;

168
Capabilities.h
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@ -4,8 +4,8 @@ static_assert( __cplusplus > 2020'99 );
#include <Alepha/Alepha.h> #include <Alepha/Alepha.h>
#include <Alepha/Meta/find.h> #include <Alepha/type_lisp.h>
#include <Alepha/Meta/type_value.h> #include <Alepha/Concepts.h>
namespace Alepha::Hydrogen namespace Alepha::Hydrogen
{ {
@ -17,122 +17,94 @@ namespace Alepha::Hydrogen
{ {
template< typename ... capabilities > template< typename ... capabilities >
struct Capabilities; struct Capabilities;
template< typename T, typename cap >
struct has_capability_s; //: std::is_base_of< cap, T > {};
#if 0
template< template< typename ... > class Type, typename ... Caps, typename cap >
struct has_capability< Type< Capabilities< Caps... > >, cap >
{
using T= Type< Capabilities< Caps... > >;
static constexpr bool value= Meta::find_in_tuple_v< cap, std::tuple< Caps... > > or std::is_base_of_v< cap, T >;
using type= has_capability;
};
template< template< typename ... > class Type, typename ... Back, typename ... Caps, typename cap >
struct has_capability< Type< Capabilities< Caps... >, Back... >, cap >
{
using T= Type< Capabilities< Caps... >, Back... >;
static constexpr bool value= Meta::find_in_tuple_v< cap, std::tuple< Caps... > > or std::is_base_of_v< cap, T >;
using type= has_capability;
};
template< template< typename ... > class Type, typename ... Front, typename ... Caps, typename cap >
struct has_capability< Type< Front..., Capabilities< Caps... > >, cap >
{
using T= Type< Front..., Capabilities< Caps... > >;
static constexpr bool value= Meta::find_in_tuple_v< cap, std::tuple< Caps... > > or std::is_base_of_v< cap, T >;
using type= has_capability;
};
#endif
} }
struct CapabilityBase {};
template< typename ... capabilities >
struct exports::Capabilities : CapabilityBase {};
template< typename T > template< typename T >
struct is_capability_list_s : std::false_type {}; concept CapabilityList= DerivedFrom< T, CapabilityBase >;
template< typename T >
constexpr bool is_capability_list_v= false;
template< typename ... Args > template< typename ... Args >
struct is_capability_list_s< Capabilities< Args... > > : std::true_type {}; constexpr bool is_capability_list_v< Capabilities< Args... > > { true };
inline constexpr Meta::trait< is_capability_list_s > is_capability_list; template< typename Capability, TypeListType List >
constexpr bool has_capability_in_list_v= false
or SameAs< car_t< List >, Capability >
or DerivedFrom< car_t< List >, Capability >
or has_capability_in_list_v< Capability, cdr_t< List > >;
template< typename Capability >
constexpr bool has_capability_in_list_v< Capability, Nil > {};
template< typename ... Args >
constexpr TypeListType auto
extract_list( const Capabilities< Args... > & )
{
return TypeList< Args... >{};
}
template< typename T > struct get_capability_list { using type= Nil; };
template< CapabilityList T >
struct get_capability_list< T >
{
using type= decltype( extract_list( std::declval< const T & >() ) );
};
template
<
template< typename ... > class Built,
typename ... LeftArgs,
typename ... RightArgs,
CapabilityList List
>
struct get_capability_list< Built< LeftArgs..., List, RightArgs... > >
{
using type= typename get_capability_list< List >::type;
};
template< typename T > template< typename T >
constexpr bool is_capability_list_v= is_capability_list( Meta::type_value< T >{} ); using get_capability_list_t= typename get_capability_list< T >::type;
template< template< typename ... > class ... HigherKinds >
struct higher_kind_tuple {};
template< typename Cap, typename ... Caps >
consteval bool
has_cap_in_capability_base( const Meta::type_value< Capabilities< Caps... > > &, Meta::type_value< Cap > cap )
{
Meta::Container::vector< Caps... > types;
using std::begin, std::end;
return Meta::find_if( begin( types ), end( types ), Meta::bind1st( Meta::is_base_of, cap ) );
}
template< typename Left, typename Cap >
constexpr bool
has_cap_in_capability_base( const Left &, Meta::type_value< Cap > cap )
{
throw "Unevaluated";
return false;
}
template< typename Cap, typename ... TParams >
consteval bool
has_cap( const Meta::Container::vector< TParams... > &types, Meta::type_value< Cap > cap )
{
bool rv= 0;
template_for( types ) <=[&]
( const auto type )
{
if( is_capability_list( type ) and has_cap_in_capability_base( type, cap ) ) rv= true;
};
return rv;
}
template< typename Cap, template< typename ... > class Class, typename ... TParams >
consteval bool
has_cap( const Meta::type_value< Class< TParams... > > &, Meta::type_value< Cap > cap )
{
return has_cap( Meta::Container::vector< TParams... >{}, cap );
}
template< typename Type, typename Cap >
consteval bool
has_cap( const Meta::type_value< Type > &, Meta::type_value< Cap > )
{
return false;
}
namespace exports namespace exports
{ {
template< typename T, typename cap > template< typename T, typename Capability >
constexpr bool has_capability_v= constexpr bool has_capability_v=
std::is_base_of_v< cap, T > has_capability_in_list_v< Capability, get_capability_list_t< T > >
or or
has_cap( Meta::type_value< T >{}, Meta::type_value< cap >{} ); DerivedFrom< T, Capability >;
template< typename T, typename cap > template< typename T, typename Capability >
struct has_capability_s : std::bool_constant< has_capability_v< T, cap > > {}; concept HasCapability= has_capability_v< T, Capability >;
inline constexpr Meta::trait< has_capability_s > has_capability; template< typename T, typename Capability >
concept Capable= HasCapability< T, Capability >;
template< typename T, typename capability >
concept Capability= has_capability_v< T, capability >;
} }
struct capability_demo {}; struct capability_demo {};
struct missing_capability_demo {}; struct missing_capability_demo {};
template< typename= Capabilities< capability_demo > > template< typename= Capabilities< capability_demo > >
struct Capable_base {}; struct Example_base {};
using Capable= Capable_base<>; using Example= Example_base<>;
static_assert( Capability< Capable, capability_demo > == true ); static_assert( not DerivedFrom< Example, capability_demo > );
static_assert( Capability< Capable, missing_capability_demo > == false ); static_assert( has_capability_in_list_v< capability_demo, TypeList< capability_demo > > );
template< Capability< missing_capability_demo > C > void f( C ) {} using XXx= get_capability_list_t< Capabilities< capability_demo > >;
constexpr XXx qqq= TypeList< capability_demo >{};
constexpr TypeList< capability_demo > zzz= get_capability_list_t< Example >{};
static_assert( std::is_same_v< get_capability_list_t< Capabilities< capability_demo > >, TypeList< capability_demo > > );
static_assert( std::is_same_v< get_capability_list_t< Example >, TypeList< capability_demo > > );
static_assert( std::is_same_v< capability_demo, car_t< get_capability_list_t< Example > > > == true );
static_assert( has_capability_in_list_v< capability_demo, TypeList< capability_demo > > == true );
static_assert( has_capability_in_list_v< capability_demo, get_capability_list_t< Example > > == true );
static_assert( HasCapability< Example, capability_demo > == true );
static_assert( HasCapability< Example, missing_capability_demo > == false );
template< HasCapability< missing_capability_demo > C > void f( C ) {}
} }
namespace exports::Capabilities_m namespace exports::Capabilities_m

2
swappable.h
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@ -79,7 +79,7 @@ namespace Alepha::Hydrogen ::detail:: swappable_m
}; };
template< typename T > template< typename T >
concept MemberSwapLensable= Capability< T, swappable > or HasMemberSwapLens< T >; concept MemberSwapLensable= HasCapability< T, swappable > or HasMemberSwapLens< T >;
template< MemberSwapLensable T > template< MemberSwapLensable T >
constexpr decltype( auto ) constexpr decltype( auto )