Setup for 2022

2022/.gitignore

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+# Created by https://www.toptal.com/developers/gitignore/api/rust
+# Edit at https://www.toptal.com/developers/gitignore?templates=rust
+
+### Rust ###
+# Generated by Cargo
+# will have compiled files and executables
+debug/
+target/
+
+# Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
+# More information here https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html
+Cargo.lock
+
+# These are backup files generated by rustfmt
+**/*.rs.bk
+
+# MSVC Windows builds of rustc generate these, which store debugging information
+*.pdb
+
+# End of https://www.toptal.com/developers/gitignore/api/rust
+

2022/Cargo.toml

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+[package]
+name = "aoc"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

2022/get.sh

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+#!/bin/bash
+source ../.env
+mkdir -p input/$1
+curl "https://adventofcode.com/2022/day/$1/input" -H "Cookie: session=${SESSION}" > input/$1/input

2022/src/bin/template.rs

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+use aoc::Solver;
+
+pub struct Day {}
+fn main() {
+    Day::solve();
+}
+#[test]
+fn part1() {
+    Day::test(aoc::Part::ONE);
+}
+#[test]
+fn part2() {
+    Day::test(aoc::Part::TWO);
+}
+
+
+impl aoc::Solver for Day {
+    fn day() -> u8 {
+        0
+    }
+    fn part1(input: &str) -> u32 {
+        input.len() as u32
+    }
+
+    fn part2(input: &str) -> u32 {
+        input.len() as u32
+    }
+}

2022/src/lib.rs

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+use std::fs;
+
+pub enum Part {
+    ONE,
+    TWO
+}
+
+pub trait Solver {
+    fn day() -> u8;
+    fn part1(input: &str) -> u32;
+    fn part2(input: &str) -> u32;
+
+    fn test(part: Part) {
+        // Select the right function
+        let fun = match part {
+            Part::ONE => Self::part1,
+            Part::TWO => Self::part2,
+        };
+
+        // Read the test input
+        let test = fs::read_to_string(format!("input/{}/test", Self::day())).expect("Test file does not exist!");
+
+        // Get the correct test result
+        let result: u32 = match test.split("\n")
+            .skip(part as usize)
+            .next()
+            .expect("Expected second line to contain result for part1")
+            .parse() {
+                Ok(result) => result,
+                _ => 0, // Use zero if no value is specified yet
+            };
+
+        // Get the input for the test
+        // @TODO This creates a new string, would be nice if we could actually get a slice here
+        let input = test.split("\n")
+            .skip(2)
+            .collect::<Vec<&str>>()
+            .join("\n");
+
+        // Assert that the result matches the expected value
+        assert_eq!(fun(&input), result);
+    }
+
+    fn solve() {
+        let input = fs::read_to_string(format!("input/{}/test", Self::day())).expect("Input file does not exist!");
+        println!("Part 1: {}", Self::part1(&input));
+        println!("Part 2: {}", Self::part2(&input));
+    }
+}