Move `MultiError` to its own file

1 files changed, 51 insertions, 0 deletions

diff --git a/src/multi_error.rs b/src/multi_error.rs
new file mode 100644
index 0000000..efb4462
--- /dev/null
+++ b/src/multi_error.rs
@@ -0,0 +1,51 @@
+// Copyright (c) 2021  Teddy Wing
+//
+// This file is part of Reflectub.
+//
+// Reflectub is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Reflectub is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Reflectub. If not, see <https://www.gnu.org/licenses/>.
+
+
+use std::fmt;
+
+
+#[derive(Debug, thiserror::Error)]
+pub struct MultiError {
+    errors: Vec<anyhow::Error>,
+}
+
+impl fmt::Display for MultiError {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(
+            f,
+            "{}",
+            self.errors
+                .iter()
+                .map(|e| format!("{:#}", e))
+                .collect::<Vec<_>>()
+                .join("\n"),
+        )
+    }
+}
+
+impl From<anyhow::Error> for MultiError {
+    fn from(error: anyhow::Error) -> Self {
+        MultiError { errors: vec![error] }
+    }
+}
+
+impl From<Vec<anyhow::Error>> for MultiError {
+    fn from(errors: Vec<anyhow::Error>) -> Self {
+        MultiError { errors: errors }
+    }
+}