Recognize __ prefixes for symbol search query

Author: Veykril

src/tools/rust-analyzer/crates/ide-db/src/symbol_index.rs

@@ -53,7 +53,6 @@ pub struct Query {
     case_sensitive: bool,
     only_types: bool,
     libs: bool,
-    include_hidden: bool,
 }
 
 impl Query {
@@ -67,14 +66,9 @@ impl Query {
             mode: SearchMode::Fuzzy,
             assoc_mode: AssocSearchMode::Include,
             case_sensitive: false,
-            include_hidden: false,
         }
     }
 
-    pub fn include_hidden(&mut self) {
-        self.include_hidden = true;
-    }
-
     pub fn only_types(&mut self) {
         self.only_types = true;
     }
@@ -363,6 +357,7 @@ impl Query {
         mut stream: fst::map::Union<'_>,
         mut cb: impl FnMut(&'sym FileSymbol),
     ) {
+        let ignore_underscore_prefixed = !self.query.starts_with("__");
         while let Some((_, indexed_values)) = stream.next() {
             for &IndexedValue { index, value } in indexed_values {
                 let symbol_index = &indices[index];
@@ -381,7 +376,8 @@ impl Query {
                     if non_type_for_type_only_query || !self.matches_assoc_mode(symbol.is_assoc) {
                         continue;
                     }
-                    if self.should_hide_query(symbol) {
+                    // Hide symbols that start with `__` unless the query starts with `__`
+                    if ignore_underscore_prefixed && symbol.name.starts_with("__") {
                         continue;
                     }
                     if self.mode.check(&self.query, self.case_sensitive, &symbol.name) {
@@ -392,11 +388,6 @@ impl Query {
         }
     }
 
-    fn should_hide_query(&self, symbol: &FileSymbol) -> bool {
-        // Hide symbols that start with `__` unless the query starts with `__`
-        !self.include_hidden && symbol.name.starts_with("__") && !self.query.starts_with("__")
-    }
-
     fn matches_assoc_mode(&self, is_trait_assoc_item: bool) -> bool {
         !matches!(
             (is_trait_assoc_item, self.assoc_mode),

src/tools/rust-analyzer/crates/ide/src/navigation_target.rs

@@ -940,11 +940,12 @@ static __FOO_CALLSITE: () = ();
         // It doesn't show the hidden symbol
         let navs = analysis.symbol_search(Query::new("foo".to_owned()), !0).unwrap();
         assert_eq!(navs.len(), 2);
+        let navs = analysis.symbol_search(Query::new("_foo".to_owned()), !0).unwrap();
+        assert_eq!(navs.len(), 0);
 
-        // Unless we configure a query to show hidden symbols
-        let mut query = Query::new("foo".to_owned());
-        query.include_hidden();
+        // Unless we explicitly search for a `__` prefix
+        let query = Query::new("__foo".to_owned());
         let navs = analysis.symbol_search(query, !0).unwrap();
-        assert_eq!(navs.len(), 3);
+        assert_eq!(navs.len(), 1);
     }
 }