зеркало из https://github.com/mozilla/gecko-dev.git
35 строки
852 B
Markdown
35 строки
852 B
Markdown
|
# unicode-xid
|
||
|
|
|
||
|
|
Determine if a `char` is a valid identifier for a parser and/or lexer according to
|
||
|
|
[Unicode Standard Annex #31](http://www.unicode.org/reports/tr31/) rules.
|
||
|
|
|
||
|
|
[](https://travis-ci.org/unicode-rs/unicode-xid)
|
||
|
|
|
||
|
|
[Documentation](https://unicode-rs.github.io/unicode-xid/unicode_xid/index.html)
|
||
|
|
|
||
|
|
```rust
|
||
|
|
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.
|
||
|
|
|
||
|
|
# crates.io
|
||
|
|
|
||
|
|
You can use this package in your project by adding the following
|
||
|
|
to your `Cargo.toml`:
|
||
|
|
|
||
|
|
```toml
|
||
|
|
[dependencies]
|
||
|
|
unicode-xid = "0.0.4"
|
||
|
|
```
|