feat: implement StringLiteral macro

home-assistant/src/event/specific/state_changed.rs

@@ -4,39 +4,14 @@ use std::str::FromStr;
 use pyo3::FromPyObject;
 use python_utils::{FromPyFromStr, ToStrToPy};
 use snafu::Snafu;
+use string_literal::StringLiteral;
 
 use crate::{entity_id::EntityId, state_object::StateObject};
 
-// TODO: replace with a derive(PyFromStrLiteral) / #[literal = "state_changed"] once I learn how to make something like that and see about serde or strum integration or inspiration
-#[derive(Debug, Clone, FromPyFromStr, ToStrToPy)]
+#[derive(Debug, Clone, StringLiteral, FromPyFromStr, ToStrToPy)]
+#[string_literal(value = "state_changed")]
 pub struct Type;
 
-/// expected a string of value "state_changed", but got {actual}
-#[derive(Debug, Snafu)]
-pub struct ParseTypeError {
-    actual: String,
-}
-
-impl FromStr for Type {
-    type Err = ParseTypeError;
-
-    fn from_str(s: &str) -> Result<Self, Self::Err> {
-        if s == "state_changed" {
-            Ok(Self)
-        } else {
-            Err(ParseTypeError {
-                actual: s.to_owned(),
-            })
-        }
-    }
-}
-
-impl Display for Type {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        write!(f, "state_changed")
-    }
-}
-
 #[derive(Debug, FromPyObject)]
 #[pyo3(from_item_all)]
 pub struct Data<