bendns' repos / rust-analyzer
Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'crates/ide-db/src/helpers.rs')
-rw-r--r--crates/ide-db/src/helpers.rs18
1 files changed, 17 insertions, 1 deletions
diff --git a/crates/ide-db/src/helpers.rs b/crates/ide-db/src/helpers.rs
index eba9d8afc4..1eb8f00020 100644
--- a/crates/ide-db/src/helpers.rs
+++ b/crates/ide-db/src/helpers.rs
@@ -9,7 +9,10 @@ use syntax::{
AstToken, SyntaxKind, SyntaxToken, TokenAtOffset,
};
-use crate::{defs::Definition, generated, RootDatabase};
+use crate::{
+ defs::{Definition, IdentClass},
+ generated, RootDatabase,
+};
pub fn item_name(db: &RootDatabase, item: ItemInNs) -> Option<Name> {
match item {
@@ -109,3 +112,16 @@ pub fn is_editable_crate(krate: Crate, db: &RootDatabase) -> bool {
let source_root_id = db.file_source_root(root_file);
!db.source_root(source_root_id).is_library
}
+
+pub fn get_definition(
+ sema: &Semantics<'_, RootDatabase>,
+ token: SyntaxToken,
+) -> Option<Definition> {
+ for token in sema.descend_into_macros(token) {
+ let def = IdentClass::classify_token(sema, &token).map(IdentClass::definitions_no_ops);
+ if let Some(&[x]) = def.as_deref() {
+ return Some(x);
+ }
+ }
+ None
+}