home/src/option.hh
Maxime Coste b548dd3a6f Change option lists to be specified as separate arguments on commands line
Option lists and maps are specified using separate arguments, avoiding
the need for additional escaping of their separator and reusing the
existing command line spliting logic instead.

As discussed on #2087, this should make it much easier to work with
list options, and make the general option system feel cleaner.
2018-07-05 07:54:28 +10:00

92 lines
2.2 KiB
C++

#ifndef option_hh_INCLUDED
#define option_hh_INCLUDED
#include "enum.hh"
#include "meta.hh"
#include "vector.hh"
#include "constexpr_utils.hh"
namespace Kakoune
{
class String;
// Forward declare functions that wont get found by ADL
inline String option_to_string(int opt);
inline String option_to_string(size_t opt);
inline String option_to_string(bool opt);
// Default fallback to single value functions
template<typename T>
decltype(option_from_string(Meta::Type<T>{}, StringView{}))
option_from_strings(Meta::Type<T>, ConstArrayView<String> strs)
{
if (strs.size() != 1)
throw runtime_error("expected a single value for option");
return option_from_string(Meta::Type<T>{}, strs[0]);
}
template<typename T>
Vector<decltype(option_to_string(std::declval<T>()))>
option_to_strings(const T& opt)
{
return Vector<String>{option_to_string(opt)};
}
template<typename T>
decltype(option_add(std::declval<T>(), std::declval<String>()))
option_add_from_strings(T& opt, ConstArrayView<String> strs)
{
if (strs.size() != 1)
throw runtime_error("expected a single value for option");
return option_add(opt, strs[0]);
}
template<typename P, typename T>
struct PrefixedList
{
P prefix;
Vector<T, MemoryDomain::Options> list;
friend bool operator==(const PrefixedList& lhs, const PrefixedList& rhs)
{
return lhs.prefix == rhs.prefix and lhs.list == rhs.list;
}
friend bool operator!=(const PrefixedList& lhs, const PrefixedList& rhs)
{
return not (lhs == rhs);
}
};
template<typename T>
using TimestampedList = PrefixedList<size_t, T>;
enum class DebugFlags
{
None = 0,
Hooks = 1 << 0,
Shell = 1 << 1,
Profile = 1 << 2,
Keys = 1 << 3,
Commands = 1 << 4,
};
constexpr bool with_bit_ops(Meta::Type<DebugFlags>) { return true; }
constexpr auto enum_desc(Meta::Type<DebugFlags>)
{
return make_array<EnumDesc<DebugFlags>, 5>({
{ DebugFlags::Hooks, "hooks" },
{ DebugFlags::Shell, "shell" },
{ DebugFlags::Profile, "profile" },
{ DebugFlags::Keys, "keys" },
{ DebugFlags::Commands, "commands" },
});
}
}
#endif // option_hh_INCLUDED