rust-rule-engine 1.0.0-alpha

A high-performance rule engine for Rust with RETE-UL algorithm (2-24x faster), CLIPS-inspired features (Template System, Defglobal, Deffacts, Test CE, Conflict Resolution), Parallel Execution
Documentation 
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// Expression Evaluation Demo - CLIPS-style arithmetic
// This demonstrates runtime expression evaluation in GRL

rule "CalculateOrderTotal" salience 100 no-loop {
    when
        Order.quantity > 0 && Order.price > 0
    then
        Log("Calculating order total...");
        Order.total = Order.quantity * Order.price;
        Order.discount = Order.total * 0.1;
        Order.final = Order.total - Order.discount;
}

rule "CalculateTax" salience 90 no-loop {
    when
        Order.final > 0
    then
        Log("Calculating tax...");
        Order.tax = Order.final * 0.08;
        Order.grandTotal = Order.final + Order.tax;
}

rule "BulkDiscount" salience 80 no-loop {
    when
        Order.quantity >= 10
    then
        Log("Applying bulk discount!");
        Order.bulkSavings = Order.total * 0.15;
}