language-servers/rust-analyzer
1
0
Fork 0
mirror of https://github.com/rust-lang/rust-analyzer.git synced 2025-09-28 12:54:58 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 4

Fix concat! with captured expression

Browse source
This commit is contained in:
Jonas Schievink 2021-12-10 15:17:31 +01:00
parent 6df9bd42f4
commit 95ddeaed8e
2 changed files with 46 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

13
crates/hir_expand/src/builtin_fn_macro.rs
View file

@ -386,7 +386,18 @@ fn concat_expand(
) -> ExpandResult<Option<ExpandedEager>> {
let mut err = None;
let mut text = String::new();
for (i, t) in tt.token_trees.iter().enumerate() {
for (i, mut t) in tt.token_trees.iter().enumerate() {
// FIXME: hack on top of a hack: `$e:expr` captures get surrounded in parentheses
// to ensure the right parsing order, so skip the parentheses here. Ideally we'd
// implement rustc's model. cc https://github.com/rust-analyzer/rust-analyzer/pull/10623
if let tt::TokenTree::Subtree(tt::Subtree { delimiter: Some(delim), token_trees }) = t {
if let [tt] = &**token_trees {
if delim.kind == tt::DelimiterKind::Parenthesis {
t = tt;
}
}
}
match t {
tt::TokenTree::Leaf(tt::Leaf::Literal(it)) if i % 2 == 0 => {
// concat works with string and char literals, so remove any quotes.