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Merge pull request #1338 from alexcrichton/fix-nom

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Workaround an upstream `nom` bug
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Alex Crichton 2019-03-13 09:48:35 -05:00 committed by GitHub
commit 4cda18f777
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1 changed files with 9 additions and 2 deletions
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11
crates/webidl/src/lib.rs
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@ -68,10 +68,17 @@ fn parse(webidl_source: &str, allowed_types: Option<&[&str]>) -> Result<Program>
.context(ErrorKind::ParsingWebIDLSource)
.into(),
weedle::Err::Error(cx) | weedle::Err::Failure(cx) => {
// Note that #[allow] here is a workaround for Geal/nom#843
// because the `Context` type here comes from `nom` and if
// something else in our crate graph enables the
// `verbose-errors` feature then we need to still compiled
// against the changed enum definition.
#[allow(unreachable_patterns)]
let remaining = match cx {
weedle::Context::Code(remaining, _) => remaining,
weedle::Context::Code(remaining, _) => remaining.len(),
_ => 0,
};
let pos = webidl_source.len() - remaining.len();
let pos = webidl_source.len() - remaining;
format_err!("failed to parse WebIDL")
.context(ErrorKind::ParsingWebIDLSourcePos(pos))
.into()