beautiful proc macro

aoc2024/Cargo.toml

@@ -7,3 +7,6 @@ edition = "2024"
 name = "aoc2024"
 path = "main.rs"
 
+[dependencies]
+gendays = { workspace = true }
+

aoc2024/main.rs

@@ -1,28 +1 @@
-mod day1;
-mod day2;
-
-fn main() {
-    // part 1 or 2
-    let day = std::env::args().nth(1).expect("needs to specify day for first argument");
-    let part = std::env::args().nth(2).expect("needs to specify 1 or 2 for second argument");
-
-    if day == "day1" {
-        if part == "1" {
-            println!("{}", day1::part1());
-        } else if part == "2" {
-            println!("{}", day1::part2());
-        } else {
-            panic!("expecting 1 or 2 for argument 2")
-        }
-    }
-
-    if day == "day2" {
-        if part == "1" {
-            println!("{}", day2::part1());
-        } else if part == "2" {
-            println!("{}", day2::part2());
-        } else {
-            panic!("expecting 1 or 2 for argument 2")
-        }
-    }
-}
+gendays::gen_days![aoc2024];