bjoernager/rust
bjoernager/rust
1
Fork 0
Code Issues Pull requests Activity

Streamline parse_path_start_expr.

Browse source 
Let-chaining avoids some code duplication.
This commit is contained in:
Nicholas Nethercote 2022-08-15 09:13:03 +10:00
parent e2b52ff73e
commit 1e8497351d
1 changed files with 6 additions and 9 deletions
Download patch file Download diff file Expand all files Collapse all files

15
compiler/rustc_parse/src/parser/expr.rs
View file

@ -1510,34 +1510,31 @@ impl<'a> Parser<'a> {
} else {
(None, self.parse_path(PathStyle::Expr)?)
};
let lo = path.span;
// `!`, as an operator, is prefix, so we know this isn't that.
let (hi, kind) = if self.eat(&token::Not) {
let (span, kind) = if self.eat(&token::Not) {
// MACRO INVOCATION expression
if qself.is_some() {
self.struct_span_err(path.span, "macros cannot use qualified paths").emit();
}
let lo = path.span;
let mac = MacCall {
path,
args: self.parse_mac_args()?,
prior_type_ascription: self.last_type_ascription,
};
(self.prev_token.span, ExprKind::MacCall(mac))
} else if self.check(&token::OpenDelim(Delimiter::Brace)) {
if let Some(expr) = self.maybe_parse_struct_expr(qself.as_ref(), &path, &attrs) {
(lo.to(self.prev_token.span), ExprKind::MacCall(mac))
} else if self.check(&token::OpenDelim(Delimiter::Brace)) &&
let Some(expr) = self.maybe_parse_struct_expr(qself.as_ref(), &path, &attrs) {
if qself.is_some() {
self.sess.gated_spans.gate(sym::more_qualified_paths, path.span);
}
return expr;
} else {
(path.span, ExprKind::Path(qself, path))
}
} else {
(path.span, ExprKind::Path(qself, path))
};
let expr = self.mk_expr(lo.to(hi), kind, attrs);
let expr = self.mk_expr(span, kind, attrs);
self.maybe_recover_from_bad_qpath(expr)
}