Struct iaith::brainf::Program

pub struct Program {
    pub program: Vec<Token>,
    pub index: usize,
    pub tape: HashMap<i32, u8>,
    pub pointer: i32,
    pub state: State,
    // some fields omitted
}

A container for all the state needed to execute a brainf*ck program.

Fields

program: Vec<Token>

A vector of tokens, representing the executable source code of the program

index: usize

A 'pointer' into the vector of tokens representing where in the code execution is currently happening.

tape: HashMap<i32, u8>

A map of cell number to value, representing the tape the program is manipulating

pointer: i32

A 'pointer' represnting which cell in the tape the program is currently manipulating.

state: State

Represents the state of the program's execution

Implementations

impl Program

pub fn new(source: &str) -> Program

Parse the given source code and construct an new instance of a program ready to be executed. Currently panics if the given source does not represent a valid program.

pub fn step(&mut self) -> Option<String>

Execute the next instruction in the program.

pub fn execute(&mut self) -> String

Execute the program, until it terminates.