summon 0.3.1

A logic engine designed to magically give you what you ask for
Documentation 
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#![feature(const_type_id)]

use summon::{circle, Tome};

#[derive(Clone)]
struct A;

#[derive(Clone)]
struct B;

#[derive(Debug)]
struct C;

#[test]
fn fuse() {
    let mut tome = Tome::new();
    tome.ether(A);
    tome.ether(B);
    tome.inscribe(circle!(A, B => C));
    println!("{:?}", tome.summon::<C>().unwrap());
}

#[derive(Clone)]
struct ConstantAcceleration(f64);
#[derive(Clone)]
struct InitialVelocity(f64);
#[derive(Clone)]
struct InitialPosition(f64);
#[derive(Clone)]
struct Time(f64);

struct Distance(f64);

#[test]
fn sum_circle() {
    let mut tome = Tome::new();
    tome.ether(ConstantAcceleration(3.0));
    tome.ether(InitialVelocity(5.0));
    tome.ether(InitialPosition(6.0));
    tome.ether(Time(4.0));
    // tome.inscribe(
    //     bend!((ConstantAcceleration(&a), InitialVelocity(&v), InitialPosition(&p), Time(&t)) -> Distance(0.5 * a * t.powi(2) + v * t + p)),
    // );
    tome.inscribe(circle!(|a: &ConstantAcceleration,
                           v: &InitialVelocity,
                           p: &InitialPosition,
                           t: &Time|
     -> Distance {
        Distance(0.5 * a.0 * t.0.powi(2) + v.0 * t.0 + p.0)
    }));
    assert_eq!(
        0.5 * 3.0 * 4.0f64.powi(2) + 5.0 * 4.0 + 6.0,
        tome.summon::<Distance>().unwrap().0
    );
}

#[test]
fn sum_bend() {
    let mut tome = Tome::new();
    tome.ether(ConstantAcceleration(3.0));
    tome.ether(InitialVelocity(5.0));
    tome.ether(InitialPosition(6.0));
    tome.ether(Time(4.0));
    tome.inscribe(
        circle!(ConstantAcceleration(a), InitialVelocity(v), InitialPosition(p), Time(t) => Distance(0.5 * a * t.powi(2) + v * t + p)),
    );
    assert_eq!(
        0.5 * 3.0 * 4.0f64.powi(2) + 5.0 * 4.0 + 6.0,
        tome.summon::<Distance>().unwrap().0
    );
}