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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 02:49:50 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 02:49:50 +0000 |
commit | 9835e2ae736235810b4ea1c162ca5e65c547e770 (patch) | |
tree | 3fcebf40ed70e581d776a8a4c65923e8ec20e026 /vendor/winnow/examples/custom_error.rs | |
parent | Releasing progress-linux version 1.70.0+dfsg2-1~progress7.99u1. (diff) | |
download | rustc-9835e2ae736235810b4ea1c162ca5e65c547e770.tar.xz rustc-9835e2ae736235810b4ea1c162ca5e65c547e770.zip |
Merging upstream version 1.71.1+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'vendor/winnow/examples/custom_error.rs')
-rw-r--r-- | vendor/winnow/examples/custom_error.rs | 42 |
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), + } + } +} |