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Variadic versions of etl::type_id_lookup and etl::type_type_lookup for C++11 and above.

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This commit is contained in:
John Wellbelove 2020-05-21 10:12:06 +01:00
parent a259cbe409
commit f6089458c5
2 changed files with 68 additions and 9 deletions
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13
include/etl/generators/type_traits_generator.h
View File

@ -1524,7 +1524,6 @@ namespace etl
};
#endif
#if ETL_CPP14_SUPPORTED
template <typename T>
using types_t = typename types<T>::type;
@ -1545,7 +1544,6 @@ namespace etl
template <typename T>
using types_cpc = typename types<T>::const_pointer_const;
#endif
//***************************************************************************
/// size_of
@ -1560,8 +1558,11 @@ namespace etl
//***************************************************************************
/// index_of
namespace private_type_traits
template <typename T, typename... TTypes>
struct index_of
{
private:
template <typename T, typename... TTypes>
struct index_of_helper;
@ -1582,11 +1583,9 @@ namespace etl
value = 1
};
};
}
template <typename T, typename... TTypes>
struct index_of
{
public:
static ETL_CONST_OR_CONSTEXPR size_t npos = -1;
enum

64
include/etl/type_traits.h
View File

@ -104,6 +104,30 @@ namespace etl
using bool_constant = integral_constant<bool, B>;
#endif
//***************************************************************************
/// bool_constant
template <bool B>
struct bool_constant :etl::integral_constant<bool, B>
{
};
#if ETL_CPP17_SUPPORTED
template <bool B>
inline constexpr bool bool_constant_v = bool_constant<B>::value;
#endif
//***************************************************************************
/// negation
template <typename T>
struct negation : etl::bool_constant<!bool(T::value)>
{
};
#if ETL_CPP17_SUPPORTED
template <typename T>
inline constexpr bool negation_v = negation<T>::value;
#endif
//***************************************************************************
/// remove_reference
template <typename T> struct remove_reference { typedef T type; };
@ -1493,7 +1517,6 @@ namespace etl
};
#endif
#if ETL_CPP14_SUPPORTED
template <typename T>
using types_t = typename types<T>::type;
@ -1514,7 +1537,6 @@ namespace etl
template <typename T>
using types_cpc = typename types<T>::const_pointer_const;
#endif
//***************************************************************************
/// size_of
@ -1526,6 +1548,44 @@ namespace etl
template <typename T>
inline constexpr size_t size_of_v = etl::size_of<T>::value;
#endif
//***************************************************************************
/// index_of
template <typename T, typename... TTypes>
struct index_of
{
private:
template <typename T, typename... TTypes>
struct index_of_helper;
template <typename T, typename T1, typename... TRest>
struct index_of_helper<T, T1, TRest...>
{
enum
{
value = etl::is_same<T, T1>::value ? 1 : 1 + index_of_helper<T, TRest...>::value
};
};
template <typename T, typename T1>
struct index_of_helper<T, T1>
{
enum
{
value = 1
};
};
public:
static ETL_CONST_OR_CONSTEXPR size_t npos = -1;
enum
{
value = etl::is_one_of<T, TTypes...>::value ? private_type_traits::index_of_helper<T, TTypes...>::value - 1 : npos
};
};
}
#endif // ETL_TYPE_TRAITS_INCLUDED