bjoernager/rust
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Avoid producing NoDelim values in MacArgs::delim().

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This commit is contained in:
Nicholas Nethercote 2022-04-26 15:21:15 +10:00
parent f0bbc782ac
commit 6b367a0532
4 changed files with 44 additions and 38 deletions
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36
compiler/rustc_parse/src/parser/stmt.rs
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@ -164,25 +164,29 @@ impl<'a> Parser<'a> {
let delim = args.delim();
let hi = self.prev_token.span;
let style =
if delim == token::Brace { MacStmtStyle::Braces } else { MacStmtStyle::NoBraces };
let style = match delim {
Some(token::Brace) => MacStmtStyle::Braces,
Some(_) => MacStmtStyle::NoBraces,
None => unreachable!(),
};
let mac = MacCall { path, args, prior_type_ascription: self.last_type_ascription };
let kind =
if (delim == token::Brace && self.token != token::Dot && self.token != token::Question)
|| self.token == token::Semi
|| self.token == token::Eof
{
StmtKind::MacCall(P(MacCallStmt { mac, style, attrs, tokens: None }))
} else {
// Since none of the above applied, this is an expression statement macro.
let e = self.mk_expr(lo.to(hi), ExprKind::MacCall(mac), AttrVec::new());
let e = self.maybe_recover_from_bad_qpath(e, true)?;
let e = self.parse_dot_or_call_expr_with(e, lo, attrs.into())?;
let e = self.parse_assoc_expr_with(0, LhsExpr::AlreadyParsed(e))?;
StmtKind::Expr(e)
};
let kind = if (style == MacStmtStyle::Braces
&& self.token != token::Dot
&& self.token != token::Question)
|| self.token == token::Semi
|| self.token == token::Eof
{
StmtKind::MacCall(P(MacCallStmt { mac, style, attrs, tokens: None }))
} else {
// Since none of the above applied, this is an expression statement macro.
let e = self.mk_expr(lo.to(hi), ExprKind::MacCall(mac), AttrVec::new());
let e = self.maybe_recover_from_bad_qpath(e, true)?;
let e = self.parse_dot_or_call_expr_with(e, lo, attrs.into())?;
let e = self.parse_assoc_expr_with(0, LhsExpr::AlreadyParsed(e))?;
StmtKind::Expr(e)
};
Ok(self.mk_stmt(lo.to(hi), kind))
}