pub fn unexpected<Input, S>(message: S) -> Unexpected<Input, (), S> where
Input: Stream,
S: for<'s> ErrorInfo<'s, Input::Token, Input::Range>,
Expand description
Always fails with message
as an unexpected error.
Never consumes any input.
Has ()
the output type
let result = unexpected("token")
.easy_parse("a");
assert!(result.is_err());
assert!(
result.err()
.unwrap()
.errors
.iter()
.any(|m| *m == StreamError::unexpected("token"))
);