input parsing 2022/22

2022/src/bin/day22.rs

@@ -0,0 +1,64 @@
+#![feature(test)]
+extern crate test;
+use aoc2022::{
+    boilerplate,
+    common::*,
+    grid::{Grid, HashGrid, PositionND},
+};
+
+const DAY: usize = 22;
+type Parsed = (HashGrid<bool, 2>, Vec<Instruction>);
+
+#[derive(Copy, Clone, Debug)]
+enum Instruction {
+    TurnLeft,
+    TurnRight,
+    Step(usize),
+}
+
+fn parse_input(raw: &str) -> Parsed {
+    let (maze, moves) = raw.split_once("\n\n").unwrap();
+    let grid = maze
+        .lines()
+        .zip(1..)
+        .flat_map(|(line, x)| line.bytes().zip(1..).filter(|(b, _)| *b != b' ').map(move |(b, y)| (PositionND::from([x, y]), b == b'#')))
+        .collect();
+    let moves = moves
+        .split_inclusive(['L', 'R'])
+        .map(|s| s.split_at(s.len() - 1))
+        .flat_map(|(n, d)| [Instruction::Step(parse_num(n)), if d == "L" { Instruction::TurnLeft } else { Instruction::TurnRight }])
+        .collect();
+    (grid, moves)
+}
+fn part1(parsed: &Parsed) -> usize {
+    unimplemented!()
+}
+
+fn part2(parsed: &Parsed) -> usize {
+    unimplemented!()
+}
+
+boilerplate! {
+    TEST_INPUT == "\
+        ...#
+        .#..
+        #...
+        ....
+...#.......#
+........#...
+..#....#....
+..........#.
+        ...#....
+        .....#..
+        .#......
+        ......#.
+
+10R5L5R10L4R5L5",
+    tests: {
+        part1: { TEST_INPUT => 0 },
+        part2: { TEST_INPUT => 0 },
+    },
+    bench1 == 0,
+    bench2 == 0,
+    bench_parse: |(g, i): &Parsed| g.len() + i.len() => 19002,
+}