v_eval

Expression evaluator with context

use v_eval::{Value, Eval};

fn main() -> Result<(), ()> {
    let e = Eval::default()
        .insert("foo", "true")?
        .insert("bar", "false")?;

    assert_eq!(e.eval("foo != bar").unwrap(), Value::Bool(true));
    assert_eq!(
        e.eval("true && foo != bar && true").unwrap(),
        Value::Bool(true)
    );
    assert_eq!(e.eval("1 == 1 != bar").unwrap(), Value::Bool(true));
    assert_eq!(e.eval("1 == 1 + 1 == bar").unwrap(), Value::Bool(true));
    
    Ok(())
}

Contributing

Please, contribute to v_eval! The more the better! Feel free to to open an issue and/or contacting directly with the owner for any request or suggestion.

Code of conduct

This Code of Conduct is adapted from the Contributor Covenant, version 1.4, available at http://contributor-covenant.org/version/1/4

License

This project is distributed under the terms of both the Apache License (Version 2.0) and the MIT license, specified in LICENSE-APACHE and LICENSE-MIT respectively.