Add ErrorGuaranteed
to ast::LitKind::Err
, token::LitKind::Err
.
This mostly works well, and eliminates a couple of delayed bugs. One annoying thing is that we should really also add an `ErrorGuaranteed` to `proc_macro::bridge::LitKind::Err`. But that's difficult because `proc_macro` doesn't have access to `ErrorGuaranteed`, so we have to fake it.
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26 changed files with 85 additions and 64 deletions
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@ -2140,12 +2140,12 @@ impl<'a> Parser<'a> {
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Err(err) => {
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let span = token.uninterpolated_span();
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self.bump();
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report_lit_error(self.sess, err, lit, span);
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let guar = report_lit_error(self.sess, err, lit, span);
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// Pack possible quotes and prefixes from the original literal into
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// the error literal's symbol so they can be pretty-printed faithfully.
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let suffixless_lit = token::Lit::new(lit.kind, lit.symbol, None);
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let symbol = Symbol::intern(&suffixless_lit.to_string());
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let lit = token::Lit::new(token::Err, symbol, lit.suffix);
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let lit = token::Lit::new(token::Err(guar), symbol, lit.suffix);
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Some(
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MetaItemLit::from_token_lit(lit, span)
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.unwrap_or_else(|_| unreachable!()),
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