Struct IntcodeVM

pub struct IntcodeVM { /* private fields */ }

A VM that runs Intcode programs.

Examples

use aoc19intcode::IntcodeVM;
assert_eq!(
    IntcodeVM::from_prog(&[2, 4, 4, 5, 99, 0])
        .run_prog()
        .expect("Tried to run a halted program.")[5],
    9801
);

use std::{thread, sync::mpsc};
use aoc19intcode::IntcodeVM;
let input = [2, 4, 4, 5, 99, 0];
let (mtx, prx) = mpsc::channel();
let (ptx, mrx) = mpsc::channel();
let (ftx, frx) = mpsc::channel();
mtx.send(2).expect("Failed to send an input to the VM.");
thread::spawn(move || {
    IntcodeVM::with_inp_flag(&input, Some(prx), Some(ptx), Some(ftx))
        .run_prog()
});
for _ in frx.recv() {
    println!("received {}", mrx.recv().expect("VM disconnected."));
}

Implementations

impl IntcodeVM

pub fn from_prog(prog: &[i128]) -> Self

Returns a new VM with a program and no I/O controls.

pub fn with_io( prog: &[i128], input: Option<Receiver<i128>>, output: Option<Sender<i128>>, ) -> Self

Returns a new VM with a program and I/O controls.

pub fn with_inp_flag( prog: &[i128], input: Option<Receiver<i128>>, output: Option<Sender<i128>>, inp_wait_flag: Option<Sender<()>>, ) -> Self

Returns a new VM with a program and I/O controls, includes an input waiting flag sender that sends a unit (()) when the VM is expecting input.

pub fn run_prog(&mut self) -> Result<Vec<i128>, RanHaltedVMError>

Runs the VM.

Trait Implementations

impl Debug for IntcodeVM

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for IntcodeVM

fn default() -> Self

Returns the “default value” for a type.

impl Index<usize> for IntcodeVM

fn index(&self, ix: usize) -> &Self::Output

To access any cell’s value.

type Output = i128

The returned type after indexing.

impl IndexMut<usize> for IntcodeVM

fn index_mut(&mut self, ix: usize) -> &mut Self::Output

To mutably access any cell’s value.