language-servers/rust-analyzer
1
0
Fork 0
mirror of https://github.com/rust-lang/rust-analyzer.git synced 2025-10-29 02:52:11 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 5

Allow wrapping builtin#offset_of fields argument in parentheses

Browse source 
This is necessary to correctly handle nested fields (`foo.bar`), see the comments in the code for explanation.
This commit is contained in:
Chayim Refael Friedman 2025-04-21 03:43:15 +03:00
parent 2f2cff19f8
commit db6db2aacc
4 changed files with 61 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

12
crates/parser/src/grammar/expressions/atom.rs
View file

@ -258,6 +258,15 @@ fn builtin_expr(p: &mut Parser<'_>) -> Option<CompletedMarker> {
p.expect(T!['(']);
type_(p);
p.expect(T![,]);
// Due to our incomplete handling of macro groups, especially
// those with empty delimiters, we wrap `expr` fragments in
// parentheses sometimes. Since `offset_of` is a macro, and takes
// `expr`, the field names could be wrapped in parentheses.
let wrapped_in_parens = p.eat(T!['(']);
// test offset_of_parens
// fn foo() {
// builtin#offset_of(Foo, (bar.baz.0));
// }
while !p.at(EOF) && !p.at(T![')']) {
name_ref_mod_path_or_index(p);
if !p.at(T![')']) {
@ -265,6 +274,9 @@ fn builtin_expr(p: &mut Parser<'_>) -> Option<CompletedMarker> {
}
}
p.expect(T![')']);
if wrapped_in_parens {
p.expect(T![')']);
}
Some(m.complete(p, OFFSET_OF_EXPR))
} else if p.at_contextual_kw(T![format_args]) {
p.bump_remap(T![format_args]);