ToNav for GenericParam

crates/ra_hir/src/code_model.rs

@@ -860,6 +860,13 @@ pub struct GenericParam {
     pub(crate) id: GenericParamId,
 }
 
+impl GenericParam {
+    pub fn name(self, db: &impl HirDatabase) -> Name {
+        let params = db.generic_params(self.id.parent);
+        params.params[self.id.local_id].name.clone()
+    }
+}
+
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
 pub struct ImplBlock {
     pub(crate) id: ImplId,

crates/ra_ide/src/display/navigation_target.rs

@@ -6,7 +6,7 @@ use ra_db::{FileId, SourceDatabase};
 use ra_syntax::{
     ast::{self, DocCommentsOwner, NameOwner},
     match_ast, AstNode, SmolStr,
-    SyntaxKind::{self, BIND_PAT},
+    SyntaxKind::{self, BIND_PAT, TYPE_PARAM},
     TextRange,
 };
 
@@ -351,6 +351,26 @@ impl ToNav for hir::Local {
     }
 }
 
+impl ToNav for hir::GenericParam {
+    fn to_nav(&self, db: &RootDatabase) -> NavigationTarget {
+        let src = self.source(db);
+        let range = match src.value {
+            Either::Left(it) => it.syntax().text_range(),
+            Either::Right(it) => it.syntax().text_range(),
+        };
+        NavigationTarget {
+            file_id: src.file_id.original_file(db),
+            name: self.name(db).to_string().into(),
+            kind: TYPE_PARAM,
+            full_range: range,
+            focus_range: None,
+            container_name: None,
+            description: None,
+            docs: None,
+        }
+    }
+}
+
 pub(crate) fn docs_from_symbol(db: &RootDatabase, symbol: &FileSymbol) -> Option<String> {
     let parse = db.parse(symbol.file_id);
     let node = symbol.ptr.to_node(parse.tree().syntax());