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Fix array element attribute position

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This commit is contained in:
Edwin Cheng 2020-01-16 23:37:43 +08:00
parent b2ed130ffd
commit ed8d5c86e3
5 changed files with 60 additions and 36 deletions
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22
crates/ra_parser/src/grammar/attributes.rs
View file

@ -8,6 +8,28 @@ pub(super) fn inner_attributes(p: &mut Parser) {
}
}
pub(super) fn with_outer_attributes(
p: &mut Parser,
f: impl Fn(&mut Parser) -> Option<CompletedMarker>,
) -> bool {
let am = p.start();
let has_attrs = p.at(T![#]);
attributes::outer_attributes(p);
let cm = f(p);
let success = cm.is_some();
match (has_attrs, cm) {
(true, Some(cm)) => {
let kind = cm.kind();
cm.undo_completion(p).abandon(p);
am.complete(p, kind);
}
_ => am.abandon(p),
}
success
}
pub(super) fn outer_attributes(p: &mut Parser) {
while p.at(T![#]) {
attribute(p, false)

4
crates/ra_parser/src/grammar/expressions.rs
View file

@ -14,9 +14,9 @@ pub(super) enum StmtWithSemi {
const EXPR_FIRST: TokenSet = LHS_FIRST;
pub(super) fn expr(p: &mut Parser) -> BlockLike {
pub(super) fn expr(p: &mut Parser) -> (Option<CompletedMarker>, BlockLike) {
let r = Restrictions { forbid_structs: false, prefer_stmt: false };
expr_bp(p, r, 1).1
expr_bp(p, r, 1)
}
pub(super) fn expr_stmt(p: &mut Parser) -> (Option<CompletedMarker>, BlockLike) {

14
crates/ra_parser/src/grammar/expressions/atom.rs
View file

@ -192,9 +192,8 @@ fn array_expr(p: &mut Parser) -> CompletedMarker {
// 1,
// 2,
// ];
attributes::outer_attributes(p);
attributes::with_outer_attributes(p, |p| expr(p).0);
expr(p);
if p.eat(T![;]) {
expr(p);
p.expect(T![']']);
@ -212,12 +211,15 @@ fn array_expr(p: &mut Parser) -> CompletedMarker {
// #[cfg(test)]
// 2,
// ];
attributes::outer_attributes(p);
if !p.at_ts(EXPR_FIRST) {
p.error("expected expression");
if !attributes::with_outer_attributes(p, |p| {
if !p.at_ts(EXPR_FIRST) {
p.error("expected expression");
return None;
}
expr(p).0
}) {
break;
}
expr(p);
}
p.expect(T![']']);
m.complete(p, ARRAY_EXPR)