// Matrix Construct // // Copyright (C) Matrix Construct Developers, Authors & Contributors // Copyright (C) 2016-2018 Jason Volk <jason@zemos.net> // // Permission to use, copy, modify, and/or distribute this software for any // purpose with or without fee is hereby granted, provided that the above // copyright notice and this permission notice is present in all copies. The // full license for this software is available in the LICENSE file. #pragma once #define HAVE_IRCD_JSON_TUPLE_INDEXOF_H namespace ircd { namespace json { template<class tuple, size_t hash, size_t i = 0> constexpr enable_if_tuple<tuple, size_t> indexof() noexcept { if constexpr(i < size<tuple>()) if constexpr(name_hash(key<tuple, i>()) != hash) return indexof<tuple, hash, i + 1>(); return i; } template<class tuple, const char *const &name, size_t i = 0> constexpr enable_if_tuple<tuple, size_t> indexof() noexcept { return indexof<tuple, name_hash(name)>(); } template<class tuple, size_t i = 0, size_t N> inline constexpr enable_if_tuple<tuple, size_t> indexof(const char (&name)[N]) noexcept { if constexpr(i < size<tuple>()) if(!_constexpr_equal(key<tuple, i>(), name)) return indexof<tuple, i + 1>(name); return i; } template<class tuple, size_t i = 0> inline constexpr enable_if_tuple<tuple, size_t> indexof(const string_view &name) noexcept { if constexpr(i < size<tuple>()) { constexpr string_view key_name { key<tuple, i>() }; if(!_constexpr_equal(name, key_name)) return indexof<tuple, i + 1>(name); } return i; } } // namespace json } // namespace ircd