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/*
Copyright 2021 Gabriel Jensen
This file is part of dux.
dux is free software: you can redistribute it and/or modify it under the
terms of the GNU Affero General Public License as published by the Free
Software Foundation, either version 3 of the License, or (at your
option) any later version.
dux is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public
License for more details.
You should have received a copy of the GNU Affero General Public License
along with dux. If not, see <https://www.gnu.org/licenses/>.
*/
constexpr auto ::dux::isspace(char32_t const _chr) -> bool {
if(_chr > ::dux::unimax) [[unlikely]] {
throw ::dux::outofdomain("Unicode codepoint too big!");
}
switch(_chr) {
[[likely]] default:
return false;
case U'\u0009': /* HORIZONTAL TABULATION */
[[fallthrough]];
case U'\u000A': /* NEW LINE */
[[fallthrough]];
case U'\u000B': /* VERTICAL TABULATION */
[[fallthrough]];
case U'\u000C': /* FORM FEED */
[[fallthrough]];
case U'\u000D': /* CARRIAGE RETURN */
[[fallthrough]];
case U'\u0020': /* SPACE */
return true;
}
}
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