Don't expose third-party errors in public API.

taskchampion/taskchampion/src/errors.rs

@@ -19,20 +19,25 @@ pub enum Error {
     /// A usage error
     #[error("User Error: {0}")]
     Usage(String),
-
-    /// Error conversions.
-    #[error(transparent)]
-    Http(#[from] ureq::Error),
-    #[error(transparent)]
-    Io(#[from] io::Error),
-    #[error(transparent)]
-    Json(#[from] serde_json::Error),
+    /// A general error.
     #[error(transparent)]
     Other(#[from] anyhow::Error),
-    #[error("Third Party Sqlite Error")]
-    Rusqlite(#[from] rusqlite::Error),
-    #[error(transparent)]
-    Sqlite(#[from] crate::storage::sqlite::SqliteError),
 }
 
+/// Convert private and third party errors into Error::Other.
+macro_rules! convert_error {
+    ( $error:ty ) => {
+        impl From<$error> for Error {
+            fn from(err: $error) -> Self {
+                Self::Other(err.into())
+            }
+        }
+    };
+}
+convert_error!(ureq::Error);
+convert_error!(io::Error);
+convert_error!(serde_json::Error);
+convert_error!(rusqlite::Error);
+convert_error!(crate::storage::sqlite::SqliteError);
+
 pub type Result<T> = std::result::Result<T, Error>;