kakoune/src/meta.hh

43 lines
896 B
C++

#ifndef meta_hh_INCLUDED
#define meta_hh_INCLUDED
#include <utility>
namespace Kakoune
{
inline namespace Meta
{
struct AnyType{};
template<typename T> struct Type : AnyType {};
}
template<typename T, size_t N>
struct Array
{
constexpr size_t size() const { return N; }
constexpr const T& operator[](int i) const { return m_data[i]; }
constexpr const T* begin() const { return m_data; }
constexpr const T* end() const { return m_data+N; }
T m_data[N];
};
template<typename T, size_t N, size_t... Indices>
constexpr Array<T, N> make_array(const T (&data)[N], std::index_sequence<Indices...>)
{
static_assert(sizeof...(Indices) == N, "size mismatch");
return {{data[Indices]...}};
}
template<typename T, size_t N>
constexpr Array<T, N> make_array(const T (&data)[N])
{
return make_array(data, std::make_index_sequence<N>());
}
}
#endif // meta_hh_INCLUDED