Macro pomsky 

pomsky!() { /* proc-macro */ }

Macro to compile a pomsky expression at compile time.

Example

use pomsky_macro::pomsky;

const REGEX: &str = pomsky! {
    let number = '-'? [digit]+;
    let op = ["+-*/"];
    number (op number)*
};

NOTE: Code points (e.g. U+FFEF) should be written without the + (i.e., UFFEF), because rustfmt surrounds + with spaces by default, which would break parsing.

The regex flavor defaults to Rust, so it can be used with the regex crate:

use regex::Regex;

fn get_regex() -> Regex {
    Regex::new(pomsky! { "hello world" }).unwrap()
}

If you want to use a different flavor, you can specify it in the first line, like so:

pomsky! {
    #flavor = Pcre
    // your pomsky expression goes here
}

Available flavors are

• DotNet (C#, F#)
• Java
• JavaScript (ECMAScript, Dart)
• Pcre (Crystal, Delphi, Elixir, Erlang, Hack, Julia, PHP, R, Vala, …)
• Python (re module)
• Ruby
• Rust (regex crate)