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cleanup unnecessary else

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This commit is contained in:
Michael Lamparski 2018-07-16 14:03:35 -04:00
parent 191e76c5b8
commit 0467ae0cf5
1 changed files with 4 additions and 6 deletions
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10
src/libsyntax/ext/tt/macro_parser.rs
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@ -696,16 +696,14 @@ pub fn parse(
} else {
return Failure(parser.span, token::Eof);
}
} else {
// Performance hack: eof_items may share matchers via Rc with other things that we want
// to modify. Dropping eof_items now may drop these refcounts to 1, preventing an
// unnecessary implicit clone later in Rc::make_mut.
drop(eof_items);
}
// Performance hack: eof_items may share matchers via Rc with other things that we want
// to modify. Dropping eof_items now may drop these refcounts to 1, preventing an
// unnecessary implicit clone later in Rc::make_mut.
drop(eof_items);
// Another possibility is that we need to call out to parse some rust nonterminal
// (black-box) parser. However, if there is not EXACTLY ONE of these, something is wrong.
assert!(!token_name_eq(&parser.token, &token::Eof));
if (!bb_items.is_empty() && !next_items.is_empty()) || bb_items.len() > 1 {
let nts = bb_items
.iter()