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Use reusable parser wrapper more

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This commit is contained in:
Bert Peters
2021-12-18 14:54:05 +01:00
parent 7d331f9131
commit ba1b7b693e
3 changed files with 12 additions and 30 deletions
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14
2021/src/day13.rs
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@@ -8,9 +8,10 @@ use nom::multi::many0;
use nom::sequence::preceded;
use nom::sequence::separated_pair;
use nom::sequence::terminated;
use nom::Finish;
use nom::IResult;
use crate::common::read_input;
type Coords = (u16, u16);
#[derive(Copy, Clone)]
@@ -47,13 +48,6 @@ fn parse_fold(input: &[u8]) -> IResult<&[u8], Fold> {
)(input)
}
fn read_input(input: &mut dyn Read) -> (Vec<Coords>, Vec<Fold>) {
let mut input_buffer = Vec::new();
input.read_to_end(&mut input_buffer).unwrap();
parse_input(&input_buffer).finish().unwrap().1
}
fn apply_fold(dots: &mut Vec<Coords>, fold: Fold) {
match fold {
Fold::X(coord) => dots.iter_mut().for_each(|(x, _)| {
@@ -88,7 +82,7 @@ fn print_dots(dots: &[Coords]) -> String {
}
pub fn part1(input: &mut dyn Read) -> String {
let (mut dots, folds) = read_input(input);
let (mut dots, folds) = read_input(input, parse_input);
apply_fold(&mut dots, folds[0]);
@@ -98,7 +92,7 @@ pub fn part1(input: &mut dyn Read) -> String {
}
pub fn part2(input: &mut dyn Read) -> String {
let (mut dots, folds) = read_input(input);
let (mut dots, folds) = read_input(input, parse_input);
folds
.into_iter()