1 files changed, 42 insertions, 0 deletions
diff --git a/vendor/winnow/examples/custom_error.rs b/vendor/winnow/examples/custom_error.rs
new file mode 100644
index 000000000..954452a20
--- /dev/null
+++ b/vendor/winnow/examples/custom_error.rs
@@ -0,0 +1,42 @@
+use winnow::error::ErrMode;
+use winnow::error::ErrorKind;
+use winnow::error::ParseError;
+use winnow::IResult;
+
+#[derive(Debug, PartialEq, Eq)]
+pub enum CustomError<I> {
+    MyError,
+    Nom(I, ErrorKind),
+}
+
+impl<I> ParseError<I> for CustomError<I> {
+    fn from_error_kind(input: I, kind: ErrorKind) -> Self {
+        CustomError::Nom(input, kind)
+    }
+
+    fn append(self, _: I, _: ErrorKind) -> Self {
+        self
+    }
+}
+
+pub fn parse(_input: &str) -> IResult<&str, &str, CustomError<&str>> {
+    Err(ErrMode::Backtrack(CustomError::MyError))
+}
+
+fn main() {}
+
+#[cfg(test)]
+mod tests {
+    use super::parse;
+    use super::CustomError;
+    use winnow::error::ErrMode;
+
+    #[test]
+    fn it_works() {
+        let err = parse("").unwrap_err();
+        match err {
+            ErrMode::Backtrack(e) => assert_eq!(e, CustomError::MyError),
+            _ => panic!("Unexpected error: {:?}", err),
+        }
+    }
+}