Crate unicode_xid

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

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

crates.io

You can use this package in your project by adding the following to your Cargo.toml:

[dependencies]
unicode-derived_property = "0.0.1"

Constants

UNICODE_VERSION

The version of Unicode that this version of unicode-derived-property is based on.

Traits

UnicodeXID

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