bjoernager/rust
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Synthesize a TokenStream for StmtKind::Empty

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Fixes #80760
This commit is contained in:
Aaron Hill 2021-01-07 11:43:21 -05:00
parent c8915eebea
commit 3ed6caae60
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3 changed files with 50 additions and 1 deletions
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11
compiler/rustc_parse/src/lib.rs
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@ -257,7 +257,16 @@ pub fn nt_to_tokenstream(
let tokens = match *nt {
Nonterminal::NtItem(ref item) => prepend_attrs(sess, &item.attrs, nt, item.tokens.as_ref()),
Nonterminal::NtBlock(ref block) => convert_tokens(block.tokens.as_ref()),
Nonterminal::NtStmt(ref stmt) => prepend_attrs(sess, stmt.attrs(), nt, stmt.tokens()),
Nonterminal::NtStmt(ref stmt) => {
let do_prepend = |tokens| prepend_attrs(sess, stmt.attrs(), nt, tokens);
if let ast::StmtKind::Empty = stmt.kind {
let tokens: TokenStream =
tokenstream::TokenTree::token(token::Semi, stmt.span).into();
do_prepend(Some(&LazyTokenStream::new(tokens)))
} else {
do_prepend(stmt.tokens())
}
}
Nonterminal::NtPat(ref pat) => convert_tokens(pat.tokens.as_ref()),
Nonterminal::NtTy(ref ty) => convert_tokens(ty.tokens.as_ref()),
Nonterminal::NtIdent(ident, is_raw) => {