use unicode_xid::UnicodeXID;
pub fn is_whitespace(c: char) -> bool {
c.is_whitespace()
}
pub fn is_ident_start(c: char) -> bool {
('a'..='z').contains(&c)
|| ('A'..='Z').contains(&c)
|| c == '_'
|| (c > '\x7f' && UnicodeXID::is_xid_start(c))
}
pub fn is_ident_continue(c: char) -> bool {
('a'..='z').contains(&c)
|| ('A'..='Z').contains(&c)
|| ('0'..='9').contains(&c)
|| c == '_'
|| (c > '\x7f' && UnicodeXID::is_xid_continue(c))
}
pub fn is_dec_digit(c: char) -> bool {
('0'..='9').contains(&c)
}