#unicode-characters #unicode #unicode-text #xid

no-std unicode-xid

Determine whether characters have the XID_Start or XID_Continue properties according to Unicode Standard Annex #31

12 releases

Uses old Rust 2015

0.2.6 Sep 19, 2024
0.2.4 Sep 15, 2022
0.2.3 May 2, 2022
0.2.2 Apr 29, 2021
0.0.2 Jul 9, 2015

#11 in Text processing

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7,751,963 downloads per month
Used in 15,108 crates (119 directly)

MIT/Apache

62KB
1.5K SLoC

unicode-xid

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

Build Status

Documentation

extern crate unicode_xid;

use unicode_xid::UnicodeXID;

fn main() {
    let ch = 'a';
    println!("Is {} a valid start of an identifier? {}", ch, UnicodeXID::is_xid_start(ch));
}

features

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

changelog

0.2.6

  • Update to Unicode 16.0.0.

0.2.5

  • Update to Unicode 15.1.0.

0.2.4

  • Update to Unicode 15.0.0.
  • Replace const tables with static tables.

0.2.3

  • Update to Unicode 14.0.0.

0.2.2

  • Add an ASCII fast-path.

0.2.1

  • Update to Unicode 13.0.0.
  • Speed up lookup.

0.2.0

  • Update to Unicode 12.1.0.

0.1.0

  • Initial release.

No runtime deps