bjoernager/rust
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Parse unnamed fields and anonymous structs or unions

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Anonymous structs or unions are only allowed in struct field
definitions.

Co-authored-by: carbotaniuman <41451839+carbotaniuman@users.noreply.github.com>
This commit is contained in:
Frank King 2023-08-23 20:53:47 +08:00
parent 439d066bcf
commit 868706d9b5
25 changed files with 650 additions and 5 deletions
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8
compiler/rustc_parse/src/parser/item.rs
View file

@ -1594,7 +1594,7 @@ impl<'a> Parser<'a> {
Ok((class_name, ItemKind::Union(vdata, generics)))
}
fn parse_record_struct_body(
pub(crate) fn parse_record_struct_body(
&mut self,
adt_ty: &str,
ident_span: Span,
@ -1869,7 +1869,7 @@ impl<'a> Parser<'a> {
}
}
self.expect_field_ty_separator()?;
let ty = self.parse_ty()?;
let ty = self.parse_ty_for_field_def()?;
if self.token.kind == token::Colon && self.look_ahead(1, |tok| tok.kind != token::Colon) {
self.sess.emit_err(errors::SingleColonStructType { span: self.token.span });
}
@ -1894,7 +1894,9 @@ impl<'a> Parser<'a> {
/// for better diagnostics and suggestions.
fn parse_field_ident(&mut self, adt_ty: &str, lo: Span) -> PResult<'a, Ident> {
let (ident, is_raw) = self.ident_or_err(true)?;
if !is_raw && ident.is_reserved() {
if ident.name == kw::Underscore {
self.sess.gated_spans.gate(sym::unnamed_fields, lo);
} else if !is_raw && ident.is_reserved() {
let snapshot = self.create_snapshot_for_diagnostic();
let err = if self.check_fn_front_matter(false, Case::Sensitive) {
let inherited_vis = Visibility {