Adding `coolrule` library as a dependency

Run this command in a terminal, in your project's directory:

cargo add coolrule

To add it manually, edit your project's Cargo.toml file and add to the [dependencies] section:

coolrule = "0.1.0"

The coolrule library will be automatically available globally. Read the coolrule library documentation.

Back to the crate overview.

Readme

coolrule

Boolean expression evaluation engine (a port of boolrule to Rust).

// Without context
let expr = coolrule::new("1 in (1, 2, 3) or 2 > 3")?;
let test = expr.test()?; // true

// With context
let expr = coolrule::new("x ∉ (5, 6, 7)")?;
let test = expr.test_with_context(
    HashMap::from([(vec!["x"], Value::Number(8.0))])
)?; // true

The boolrule test suite has also been ported (and passes) see lib.rs.

Expressions are parsed via PEG parser combinators (powered by pom).

It's around 3x faster than the Python version (before any kind of optimization work).

I'm still learning how to write idiomatic Rust so if you see anything strange please let me know!

Tests

cargo test

Adding coolrule library as a dependency

Adding `coolrule` library as a dependency