Crate unicode_xid

Determine if a char is a valid identifier for a parser and/or lexer according to Unicode Standard Annex #31 rules.

use unicode_xid::UnicodeXID;

fn main() {
    assert_eq!(UnicodeXID::is_xid_start('a'), true); // 'a' is a valid start of an identifier
    assert_eq!(UnicodeXID::is_xid_start('△'), false); // '△' is a NOT valid start of an identifier
}

features

unicode-xid supports a no_std feature. This eliminates dependence on std, and instead uses equivalent functions from core.

Constants

• UNICODE_VERSION
  The version of Unicode that this version of unicode-xid is based on.

Traits

• UnicodeXID
  Methods for determining if a character is a valid identifier character.