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interactive brainfuck repl

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This commit is contained in:
nora 2021-05-03 18:06:46 +02:00
parent 5cc058267b
commit c17bea08e0
7 changed files with 168 additions and 43 deletions
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11
bfi-rust/src/interpreter/parsed.rs
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@ -8,13 +8,16 @@
use std::io::{Read, stdin, Write};
use crate::interpreter::{MEM_SIZE, Memory, minify, parse, Statement};
use crate::interpreter::optimized::PrintMode;
use crate::repl::BrainfuckState;
pub fn run(pgm: &str) -> String {
let pgm = minify(pgm);
let pgm = parse(pgm.chars().collect(), false);
let pgm = parse(pgm.chars(), PrintMode::ToString);
interpret(&pgm)
}
fn interpret(pgm: &[Statement]) -> String {
let mut out = String::new();
let mut pointer: usize = 0;
@ -27,6 +30,12 @@ fn interpret(pgm: &[Statement]) -> String {
out
}
pub fn interpret_with_state(pgm: &[Statement], state: &mut BrainfuckState) {
for s in pgm {
execute(s, &mut state.memory, &mut state.pointer, &mut String::new())
}
}
fn execute(statement: &Statement, mem: &mut Memory, pointer: &mut usize, out: &mut String) {
match statement {
Statement::R => if *pointer == MEM_SIZE - 1 { *pointer = 0 } else { *pointer += 1 },