#![feature(test)]
extern crate rustijvm;
extern crate test;

use std::fs::File;
use std::rc::Rc;
use std::sync::Mutex;
use std::io::{Cursor, Seek, SeekFrom, Read};
use test::Bencher;

fn run_bfi(file: &str) -> String {
    let file = File::open(file).expect("Missing bf file");
    let rc = Rc::new(Mutex::new(Cursor::new(Vec::new())));
    let mut machine = rustijvm::Machine::new_from_file("files/bonus/bfi.ijvm").unwrap();
    machine.set_output(rc.clone());
    machine.set_input(Box::new(file));

    machine.run().unwrap();

    let mut out = rc.lock().unwrap();
    let mut string = String::new();

    out.seek(SeekFrom::Start(0)).unwrap();
    out.read_to_string(&mut string).unwrap();

    string
}

#[bench]
fn bench_bf_hello_world(b: &mut Bencher) {
    b.iter(|| run_bfi("files/bonus/brainfuck/hello_world.bf"));
}

#[bench]
fn bench_bf_dank(b: &mut Bencher) {
    b.iter(|| run_bfi("files/bonus/brainfuck/dank.bf"));
}