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day10 part 1.

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Gabe Venberg 2023-11-24 19:03:39 -06:00 • committed by Gabe Venberg
parent 3b18b90bda
commit 711dbb63d2
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days/day10/src/parse.rs Normal file
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use std::collections::VecDeque;
use nom::{
branch::alt,
bytes::complete::tag,
combinator::{all_consuming, map, value},
sequence::preceded,
Finish, IResult,
};
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum Instruction {
NoOp,
Addx(i32),
}
impl Instruction {
fn parse(i: &str) -> IResult<&str, Self> {
let noop = tag("noop");
let addx = preceded(tag("addx "), nom::character::complete::i32);
alt((value(Self::NoOp, noop), map(addx, Self::Addx)))(i)
}
pub fn cycles(self) -> usize {
match self {
Self::NoOp => 1,
Self::Addx(_) => 2,
}
}
}
pub fn parse(input: &str) -> VecDeque<Instruction> {
input
.lines()
.map(|l| all_consuming(Instruction::parse)(l).finish().unwrap().1)
.collect()
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_parse() {
let input = concat!(
"addx 15\n",
"addx -11\n",
"addx 6\n",
"addx -3\n",
"addx 5\n",
"addx -1\n",
"addx -8\n",
"addx 13\n",
"addx 4\n",
"noop\n",
"addx -1\n",
"addx 5\n",
"addx -1\n",
"addx 5\n",
"addx -1\n",
"addx 5\n",
"addx -1\n",
"addx 5\n",
"addx -1\n",
"addx -35\n",
"addx 1\n",
"addx 24\n",
"addx -19\n",
"addx 1\n",
"addx 16\n",
"addx -11\n",
"noop\n",
"noop\n",
"addx 21\n",
"addx -15\n",
"noop\n",
"noop\n",
"addx -3\n",
"addx 9\n",
"addx 1\n",
"addx -3\n",
"addx 8\n",
"addx 1\n",
"addx 5\n",
"noop\n",
"noop\n",
"noop\n",
"noop\n",
"noop\n",
"addx -36\n",
"noop\n",
"addx 1\n",
"addx 7\n",
"noop\n",
"noop\n",
"noop\n",
"addx 2\n",
"addx 6\n",
"noop\n",
"noop\n",
"noop\n",
"noop\n",
"noop\n",
"addx 1\n",
"noop\n",
"noop\n",
"addx 7\n",
"addx 1\n",
"noop\n",
"addx -13\n",
"addx 13\n",
"addx 7\n",
"noop\n",
"addx 1\n",
"addx -33\n",
"noop\n",
"noop\n",
"noop\n",
"addx 2\n",
"noop\n",
"noop\n",
"noop\n",
"addx 8\n",
"noop\n",
"addx -1\n",
"addx 2\n",
"addx 1\n",
"noop\n",
"addx 17\n",
"addx -9\n",
"addx 1\n",
"addx 1\n",
"addx -3\n",
"addx 11\n",
"noop\n",
"noop\n",
"addx 1\n",
"noop\n",
"addx 1\n",
"noop\n",
"noop\n",
"addx -13\n",
"addx -19\n",
"addx 1\n",
"addx 3\n",
"addx 26\n",
"addx -30\n",
"addx 12\n",
"addx -1\n",
"addx 3\n",
"addx 1\n",
"noop\n",
"noop\n",
"noop\n",
"addx -9\n",
"addx 18\n",
"addx 1\n",
"addx 2\n",
"noop\n",
"noop\n",
"addx 9\n",
"noop\n",
"noop\n",
"noop\n",
"addx -1\n",
"addx 2\n",
"addx -37\n",
"addx 1\n",
"addx 3\n",
"noop\n",
"addx 15\n",
"addx -21\n",
"addx 22\n",
"addx -6\n",
"addx 1\n",
"noop\n",
"addx 2\n",
"addx 1\n",
"noop\n",
"addx -10\n",
"noop\n",
"noop\n",
"addx 20\n",
"addx 1\n",
"addx 2\n",
"addx 2\n",
"addx -6\n",
"addx -11\n",
"noop\n",
"noop\n",
"noop\n",
);
assert_eq!(
parse(input),
vec![
Instruction::Addx(15),
Instruction::Addx(-11),
Instruction::Addx(6),
Instruction::Addx(-3),
Instruction::Addx(5),
Instruction::Addx(-1),
Instruction::Addx(-8),
Instruction::Addx(13),
Instruction::Addx(4),
Instruction::NoOp,
Instruction::Addx(-1),
Instruction::Addx(5),
Instruction::Addx(-1),
Instruction::Addx(5),
Instruction::Addx(-1),
Instruction::Addx(5),
Instruction::Addx(-1),
Instruction::Addx(5),
Instruction::Addx(-1),
Instruction::Addx(-35),
Instruction::Addx(1),
Instruction::Addx(24),
Instruction::Addx(-19),
Instruction::Addx(1),
Instruction::Addx(16),
Instruction::Addx(-11),
Instruction::NoOp,
Instruction::NoOp,
Instruction::Addx(21),
Instruction::Addx(-15),
Instruction::NoOp,
Instruction::NoOp,
Instruction::Addx(-3),
Instruction::Addx(9),
Instruction::Addx(1),
Instruction::Addx(-3),
Instruction::Addx(8),
Instruction::Addx(1),
Instruction::Addx(5),
Instruction::NoOp,
Instruction::NoOp,
Instruction::NoOp,
Instruction::NoOp,
Instruction::NoOp,
Instruction::Addx(-36),
Instruction::NoOp,
Instruction::Addx(1),
Instruction::Addx(7),
Instruction::NoOp,
Instruction::NoOp,
Instruction::NoOp,
Instruction::Addx(2),
Instruction::Addx(6),
Instruction::NoOp,
Instruction::NoOp,
Instruction::NoOp,
Instruction::NoOp,
Instruction::NoOp,
Instruction::Addx(1),
Instruction::NoOp,
Instruction::NoOp,
Instruction::Addx(7),
Instruction::Addx(1),
Instruction::NoOp,
Instruction::Addx(-13),
Instruction::Addx(13),
Instruction::Addx(7),
Instruction::NoOp,
Instruction::Addx(1),
Instruction::Addx(-33),
Instruction::NoOp,
Instruction::NoOp,
Instruction::NoOp,
Instruction::Addx(2),
Instruction::NoOp,
Instruction::NoOp,
Instruction::NoOp,
Instruction::Addx(8),
Instruction::NoOp,
Instruction::Addx(-1),
Instruction::Addx(2),
Instruction::Addx(1),
Instruction::NoOp,
Instruction::Addx(17),
Instruction::Addx(-9),
Instruction::Addx(1),
Instruction::Addx(1),
Instruction::Addx(-3),
Instruction::Addx(11),
Instruction::NoOp,
Instruction::NoOp,
Instruction::Addx(1),
Instruction::NoOp,
Instruction::Addx(1),
Instruction::NoOp,
Instruction::NoOp,
Instruction::Addx(-13),
Instruction::Addx(-19),
Instruction::Addx(1),
Instruction::Addx(3),
Instruction::Addx(26),
Instruction::Addx(-30),
Instruction::Addx(12),
Instruction::Addx(-1),
Instruction::Addx(3),
Instruction::Addx(1),
Instruction::NoOp,
Instruction::NoOp,
Instruction::NoOp,
Instruction::Addx(-9),
Instruction::Addx(18),
Instruction::Addx(1),
Instruction::Addx(2),
Instruction::NoOp,
Instruction::NoOp,
Instruction::Addx(9),
Instruction::NoOp,
Instruction::NoOp,
Instruction::NoOp,
Instruction::Addx(-1),
Instruction::Addx(2),
Instruction::Addx(-37),
Instruction::Addx(1),
Instruction::Addx(3),
Instruction::NoOp,
Instruction::Addx(15),
Instruction::Addx(-21),
Instruction::Addx(22),
Instruction::Addx(-6),
Instruction::Addx(1),
Instruction::NoOp,
Instruction::Addx(2),
Instruction::Addx(1),
Instruction::NoOp,
Instruction::Addx(-10),
Instruction::NoOp,
Instruction::NoOp,
Instruction::Addx(20),
Instruction::Addx(1),
Instruction::Addx(2),
Instruction::Addx(2),
Instruction::Addx(-6),
Instruction::Addx(-11),
Instruction::NoOp,
Instruction::NoOp,
Instruction::NoOp
]
);
}
}