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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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15
2021/src/day04.rs
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@@ -6,9 +6,10 @@ use nom::multi::many1;
use nom::multi::separated_list1;
use nom::sequence::preceded;
use nom::sequence::tuple;
use nom::Finish;
use nom::IResult;
use crate::common::read_input;
#[derive(Debug)]
struct BingoCard([(bool, u8); 25]);
@@ -80,16 +81,8 @@ fn parse_input(input: &[u8]) -> IResult<&[u8], (Vec<u8>, Vec<BingoCard>)> {
tuple((parse_numbers, many1(parse_bingo)))(input)
}
fn read_input(input: &mut dyn Read) -> (Vec<u8>, Vec<BingoCard>) {
let mut buffer = Vec::new();
input.read_to_end(&mut buffer).unwrap();
parse_input(&buffer).finish().unwrap().1
}
pub fn part1(input: &mut dyn Read) -> String {
let (numbers, mut bingo_cards) = read_input(input);
let (numbers, mut bingo_cards) = read_input(input, parse_input);
for number in numbers {
for card in &mut bingo_cards {
@@ -103,7 +96,7 @@ pub fn part1(input: &mut dyn Read) -> String {
}
pub fn part2(input: &mut dyn Read) -> String {
let (numbers, mut bingo_cards) = read_input(input);
let (numbers, mut bingo_cards) = read_input(input, parse_input);
let mut bingo_won = vec![false; bingo_cards.len()];
let mut num_won = 0;
let to_win = bingo_cards.len();