larcen state-res from ruma

src/core/state_res/error.rs

@@ -0,0 +1,23 @@
+use serde_json::Error as JsonError;
+use thiserror::Error;
+
+/// Represents the various errors that arise when resolving state.
+#[derive(Error, Debug)]
+#[non_exhaustive]
+pub enum Error {
+	/// A deserialization error.
+	#[error(transparent)]
+	SerdeJson(#[from] JsonError),
+
+	/// The given option or version is unsupported.
+	#[error("Unsupported room version: {0}")]
+	Unsupported(String),
+
+	/// The given event was not found.
+	#[error("Not found error: {0}")]
+	NotFound(String),
+
+	/// Invalid fields in the given PDU.
+	#[error("Invalid PDU: {0}")]
+	InvalidPdu(String),
+}