bjoernager/rust
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Remove Cursor::append.

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It's a weird function: it lets you modify the token stream in the middle
of iteration. There is only one call site, and it is only used for the
rare `ProceduralMasquerade` legacy case.
This commit is contained in:
Nicholas Nethercote 2022-06-20 09:14:18 +10:00
parent 2b646bd533
commit ccd956aca6
2 changed files with 4 additions and 14 deletions
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6
compiler/rustc_expand/src/proc_macro_server.rs
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@ -522,10 +522,10 @@ impl server::TokenStream for Rustc<'_, '_> {
// FIXME: It needs to be removed, but there are some
// compatibility issues (see #73345).
if group.flatten {
cursor.append(group.stream);
continue;
tts.append(&mut self.into_trees(group.stream));
} else {
tts.push(TokenTree::Group(group));
}
tts.push(TokenTree::Group(group));
}
Some(tt) => tts.push(tt),
None => return tts,