Adds Day1

src/error/mod.rs

@@ -0,0 +1,28 @@
+use std::{num::{ParseIntError, TryFromIntError}, convert::Infallible, io};
+
+#[derive(Debug)]
+pub struct AdventError(pub String);
+
+impl From<ParseIntError> for AdventError {
+    fn from(e: ParseIntError) -> Self {
+        AdventError(e.to_string())
+    }
+}
+
+impl From<io::Error> for AdventError {
+    fn from(e: io::Error) -> Self {
+        AdventError(e.to_string())
+    }
+}
+
+impl From<Infallible> for AdventError {
+    fn from(_: Infallible) -> Self {
+        unreachable!()
+    }
+}
+
+impl From<TryFromIntError> for AdventError {
+    fn from(e: TryFromIntError) -> Self {
+        AdventError(e.to_string())
+    }
+}