Struct aoc::y2019::intcode::Program

pub struct Program { /* private fields */ }

A program that operates on a set of commands which represent Intcodes.

Implementations

impl Program

pub fn new(cmds: Vec<i64>, start_params: &[i64]) -> Self

Create a new program that operates on the provided commands. Start parameters can be given as well.

pub fn run(&mut self, params: &[i64]) -> Result<i64>

Run one cycle of the program. A cycle is finished when either the position is at the end of all commands, or an output (4) or exit (99) command is reached. In general this function should be repeatedly called until is_finished returns true.

The program can still be run even if it’s already finished, but the output will always be zero.

Example

use aoc::y2019::intcode::{parse_input, Program};

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let mut program = Program::new(parse_input("3,5,4,5,99,0")?, &[1]);

    assert_eq!(1, program.run(&[])?);
    assert!(program.is_finished());

    assert_eq!(0, program.run(&[])?); // Already finished

    Ok(())
}

pub fn is_finished(&self) -> bool

Check whether this program is still executable or reached the end of execution. The end is reached when either the current position is at the end of commands or the current command is the exit (99) code.

pub fn cmds(self) -> Vec<i64>

Return the current state of the commands this program runs. This will consume the program.

Trait Implementations

impl Default for Program

fn default() -> Program

Returns the “default value” for a type.