fix: Allow dead code again but disallow unused

aoc_2025/src/day1.rs

@@ -1,4 +1,4 @@
-use crate::{AoC, WinnowDay};
+use crate::{AoC, SimpleDay};
 use winnow::{
     Parser, Result,
     ascii::{digit1, multispace0},
@@ -11,12 +11,13 @@ enum Side {
     Right(i64),
 }
 
-fn day() -> impl WinnowDay {
+fn day() -> impl SimpleDay {
     AoC::new(parse as _, part1 as _, part2 as _)
 }
 
-fn parse(input: &mut &str) -> Result<Parsed> {
+fn parse(input: String) -> Parsed {
-    repeat(1.., parse_line).parse_next(input)
+    let mut input: &str = input.as_str();
+    repeat(1.., parse_line).parse_next(&mut input).unwrap()
 }
 
 fn parse_line(input: &mut &str) -> Result<Side> {

aoc_2025/src/day2.rs

@@ -1,4 +1,4 @@
-use crate::{AoC, WinnowDay};
+use crate::{AoC, SimpleDay};
 use winnow::{
     Parser, Result,
     ascii::digit1,
@@ -7,12 +7,15 @@ use winnow::{
 
 type Parsed = Vec<(u64, u64)>;
 
-fn day() -> impl WinnowDay {
+fn day() -> impl SimpleDay {
     AoC::new(parse as _, part1 as _, part2 as _)
 }
 
-fn parse(input: &mut &str) -> Result<Parsed> {
+fn parse(input: String) -> Parsed {
-    separated(1.., parse_range, ",").parse_next(input)
+    let mut input: &str = input.as_str();
+    separated(1.., parse_range, ",")
+        .parse_next(&mut input)
+        .unwrap()
 }
 
 fn parse_range(input: &mut &str) -> Result<(u64, u64)> {

aoc_2025/src/day4.rs

@@ -1,155 +0,0 @@
-use winnow::{
-    Parser, Result,
-    ascii::{multispace0, newline},
-    combinator::{alt, preceded, repeat, terminated},
-};
-
-use crate::{AoC, SimpleDay, WinnowDay};
-
-fn day() -> impl WinnowDay {
-    AoC::new(parse as _, part1 as _, part2 as _)
-}
-
-type Parsed = Vec<Vec<Cell>>;
-
-#[derive(Debug, PartialEq, Eq)]
-enum Cell {
-    Empty,
-    Paper,
-}
-
-impl Cell {
-    fn is_empty(&self) -> bool {
-        self == &Cell::Empty
-    }
-
-    fn is_paper(&self) -> bool {
-        self == &Cell::Paper
-    }
-}
-
-fn parse(input: &mut &str) -> Result<Parsed> {
-    repeat(1.., preceded(multispace0, parse_line)).parse_next(input)
-}
-
-fn parse_line(input: &mut &str) -> Result<Vec<Cell>> {
-    repeat(1.., parse_cell).parse_next(input)
-}
-
-fn parse_cell(input: &mut &str) -> Result<Cell> {
-    alt((".".map(|_| Cell::Empty), "@".map(|_| Cell::Paper))).parse_next(input)
-}
-
-fn part1(input: Parsed) -> usize {
-    let mut input = input;
-    remove_paper(&mut input)
-}
-
-fn remove_paper(input: &mut [Vec<Cell>]) -> usize {
-    let mut score = 0;
-    let mut access = Vec::new();
-    let h = input.len();
-    let w = input[0].len();
-    let directions = [
-        (-1, -1),
-        (0, -1),
-        (1, -1),
-        (1, 0),
-        (1, 1),
-        (0, 1),
-        (-1, 1),
-        (-1, 0),
-    ];
-    for y in 0..h {
-        for x in 0..w {
-            match input[y][x] {
-                Cell::Empty => {}
-                Cell::Paper => {
-                    let count = directions
-                        .iter()
-                        .filter(|dir| {
-                            let nx = x as isize + dir.0;
-                            let ny = y as isize + dir.1;
-                            nx >= 0
-                                && nx < w as isize
-                                && ny >= 0
-                                && ny < h as isize
-                                && input[ny as usize][nx as usize].is_paper()
-                        })
-                        .count();
-                    if count < 4 {
-                        score += 1;
-                        access.push((x, y));
-                    }
-                }
-            }
-        }
-    }
-    access.iter().for_each(|(x, y)| {
-        input[*y][*x] = Cell::Empty;
-    });
-    score
-}
-
-fn part2(input: Parsed) -> usize {
-    let mut input = input;
-    let mut score = 0;
-    loop {
-        let removed = remove_paper(&mut input);
-        score += removed;
-        if removed == 0 {
-            return score;
-        }
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use crate::Day;
-
-    use super::*;
-
-    #[test]
-    fn part1_test() {
-        day().assert1(
-            "..@@.@@@@.
-@@@.@.@.@@
-@@@@@.@.@@
-@.@@@@..@.
-@@.@@@@.@@
-.@@@@@@@.@
-.@.@.@.@@@
-@.@@@.@@@@
-.@@@@@@@@.
-@.@.@@@.@.",
-            "13",
-        );
-    }
-
-    #[test]
-    fn part1_solve() {
-        day().assert1(include_str!("../input/day4.txt"), "1356");
-    }
-
-    #[test]
-    fn part2_test() {
-        day().assert2(
-            "..@@.@@@@.
-@@@.@.@.@@
-@@@@@.@.@@
-@.@@@@..@.
-@@.@@@@.@@
-.@@@@@@@.@
-.@.@.@.@@@
-@.@@@.@@@@
-.@@@@@@@@.
-@.@.@@@.@.",
-            "43",
-        );
-    }
-
-    #[test]
-    fn part2_solve() {
-        day().assert2(include_str!("../input/day4.txt"), "8713");
-    }
-}

aoc_2025/src/lib.rs

@@ -1,5 +1,4 @@
 #![allow(dead_code)]
-#![allow(unused)]
 
 use std::fmt::{Debug, Display};
 
@@ -8,7 +7,6 @@ use winnow::Parser;
 mod day1;
 mod day2;
 mod day3;
-mod day4;
 
 trait Day {
     fn assert1(&self, input: &str, output: &str);

aoc_2025/src/template.rs

@@ -1,6 +1,6 @@
 use winnow::{Parser, Result};
 
-use crate::{AoC, SimpleDay, WinnowDay};
+use crate::{AoC, Day, SimpleDay, WinnowDay};
 
 fn day() -> impl WinnowDay {
     AoC::new(parse as _, part1 as _, part2 as _)