sosaku

A crate for evaluating expressions against a set of bindings. It supports a variety of operators and functions, and can be used in a variety of contexts.

Installation

Add the crate to your project:

cargo add sosaku

If you need serde/serde_json support, enable the serde feature:

cargo add sosaku --features serde

Example Usage

[!NOTE] This example assumes you have the serde_json crate in your dependencies and the serde feature enabled for sosaku.

use serde_json::json;
use sosaku::{Exp, Env};

fn main() {
    let exp = Exp::new("test.var == 5 && startsWith(test.var2, 'hello')").unwrap();

    let value = json!({"var": 5, "var2": "hello world"});
    let env = Env::new().bind_ref("test", &value).build();

    let result = exp.eval(&env).unwrap();
    println!("{result}"); // true
}