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#ifndef enum_hh_INCLUDED
#define enum_hh_INCLUDED
#include "flags.hh"
#include "string.hh"
#include "exception.hh"
#include "containers.hh"
namespace Kakoune
{
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> struct EnumDesc { T value; StringView name; };
template<typename Flags, typename = decltype(enum_desc(Flags{}))>
EnableIfWithBitOps<Flags, String> option_to_string(Flags flags)
{
constexpr auto desc = enum_desc(Flags{});
String res;
for (int i = 0; i < desc.size(); ++i)
{
if (not (flags & desc[i].value))
continue;
if (not res.empty())
res += "|";
res += desc[i].name;
}
return res;
}
template<typename Enum, typename = decltype(enum_desc(Enum{}))>
EnableIfWithoutBitOps<Enum, String> option_to_string(Enum e)
{
constexpr auto desc = enum_desc(Enum{});
auto it = find_if(desc, [e](const EnumDesc<Enum>& d) { return d.value == e; });
kak_assert(it != desc.end());
return it->name.str();
}
template<typename Flags, typename = decltype(enum_desc(Flags{}))>
EnableIfWithBitOps<Flags> option_from_string(StringView str, Flags& flags)
{
constexpr auto desc = enum_desc(Flags{});
flags = Flags{};
for (auto s : split(str, '|'))
{
auto it = find_if(desc, [s](const EnumDesc<Flags>& d) { return d.name == s; });
if (it == desc.end())
throw runtime_error(format("invalid flag value '{}'", s));
flags |= it->value;
}
}
template<typename Enum, typename = decltype(enum_desc(Enum{}))>
EnableIfWithoutBitOps<Enum> option_from_string(StringView str, Enum& e)
{
constexpr auto desc = enum_desc(Enum{});
auto it = find_if(desc, [str](const EnumDesc<Enum>& d) { return d.name == str; });
if (it == desc.end())
throw runtime_error(format("invalid enum value '{}'", str));
e = it->value;
}
}
#endif // enum_hh_INCLUDED
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