Completion item returns type name in details

Author: krzyzanowskim

Sources/SourceKit/sourcekitd/SwiftLanguageServer.swift

@@ -345,12 +345,12 @@ extension SwiftLanguageServer {
 
         let filterName: String? = value[self.keys.name]
         let insertText: String? = value[self.keys.sourcetext]
+        let typeName: String? = value[self.keys.typename]
 
         let kind: sourcekitd_uid_t? = value[self.keys.kind]
-
         result.items.append(CompletionItem(
           label: name,
-          detail: nil,
+          detail: typeName,
           sortText: nil,
           filterText: filterName,
           textEdit: nil,

Sources/SourceKit/sourcekitd/SwiftSourceKitFramework.swift

@@ -206,6 +206,7 @@ struct sourcekitd_keys {
   let filepath: sourcekitd_uid_t
   let ranges: sourcekitd_uid_t
   let usr: sourcekitd_uid_t
+  let typename: sourcekitd_uid_t
   let annotated_decl: sourcekitd_uid_t
   let doc_full_as_xml: sourcekitd_uid_t
   let syntactic_only: sourcekitd_uid_t
@@ -233,6 +234,7 @@ struct sourcekitd_keys {
     filepath = api.uid_get_from_cstr("key.filepath")!
     ranges = api.uid_get_from_cstr("key.ranges")!
     usr = api.uid_get_from_cstr("key.usr")!
+    typename = api.uid_get_from_cstr("key.typename")!
     annotated_decl = api.uid_get_from_cstr("key.annotated_decl")!
     doc_full_as_xml = api.uid_get_from_cstr("key.doc.full_as_xml")!
     syntactic_only = api.uid_get_from_cstr("key.syntactic_only")!