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Don't check items for macro calls if they have no attributes

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This commit is contained in:
Lukas Wirth 2021-11-05 14:50:10 +01:00
parent af4d244462
commit 8dad1b9228
1 changed files with 5 additions and 2 deletions
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7
crates/hir/src/semantics.rs
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@ -17,7 +17,7 @@ use rustc_hash::{FxHashMap, FxHashSet};
use smallvec::{smallvec, SmallVec};
use syntax::{
algo::skip_trivia_token,
ast::{self, HasGenericParams, HasLoopBody},
ast::{self, HasAttrs, HasGenericParams, HasLoopBody},
match_ast, AstNode, Direction, SyntaxNode, SyntaxNodePtr, SyntaxToken, TextRange, TextSize,
};
@ -588,7 +588,10 @@ impl<'db> SemanticsImpl<'db> {
// are we inside an attribute macro call
let containing_attribute_macro_call = self.with_ctx(|ctx| {
token.value.ancestors().filter_map(ast::Item::cast).find_map(|item| {
// investigate this, seems to be VERY(250ms) expensive in rust-analyzer/src/config.rs?
if item.attrs().next().is_none() {
// Don't force populate the dyn cache for items that don't have an attribute anyways
return None;
}
Some((ctx.item_to_macro_call(token.with_value(item.clone()))?, item))
})
});