README.md

moonlander-ast-rust

Code to create, manipulate and evaluate abstract syntax trees for the moonlander control code in Rust.

Learn more about this crate via the documentation.

You can build your own at the Rust Belt Rust Conference

Usage

#[macro_use]
extern crate ast;

use ast::Evaluate;

fn main() {
	let program: ast::Program = iff!(less!(vx!(), multiply!(constant!(2.0), constant!(3.0))), left!(), right!());

	let data: ast::SensorData = ast::SensorData { x: 37.0, y: 51.0, vx: 1.0, vy: 0.0, o: 0.0, w: 0.0 };

	let command = program.evaluate(data);

	let message = match **command {
		ast::Command::Skip  => "you skipped this turn",
		ast::Command::Left  => "you turned left",
		ast::Command::Right => "you turned rigth",
		ast::Command::Up    => "you fired your thrusters",
	};

	println!("action is {}", message);
}