38 lines
828 B
Rust
38 lines
828 B
Rust
use yap::Tokens;
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use crate::parsing::{newline, parse_digit};
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use super::HeightMap;
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pub fn parse_map(tokens: &mut impl Tokens<Item = char>) -> HeightMap {
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let map: Vec<Vec<usize>> = tokens.sep_by(|t| parse_line(t), |t| newline(t)).collect();
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HeightMap::new(map)
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}
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pub fn parse_line(tokens: &mut impl Tokens<Item = char>) -> Option<Vec<usize>> {
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let digits: Vec<usize> = tokens.many(|t| parse_digit(t)).collect();
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if digits.is_empty() {
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None
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} else {
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Some(digits)
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}
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}
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#[cfg(test)]
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mod test {
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use yap::IntoTokens;
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#[test]
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fn parse_line() {
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assert_eq!(
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dbg!(super::parse_line(&mut "2199943210".into_tokens()).unwrap()).len(),
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10
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)
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}
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#[test]
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fn parse_map() {
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super::parse_map(&mut "01\n11".into_tokens());
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}
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}
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