Merge #4990

4990: Introduce an ItemTree layer to avoid reparsing files r=matklad a=jonas-schievink

This reduces the latency of "go to definition" in a simple benchmark on rust-analyzer by around 30%.

cc https://github.com/rust-analyzer/rust-analyzer/issues/1650
Closes https://github.com/rust-analyzer/rust-analyzer/issues/3485

Co-authored-by: Aleksey Kladov <[email protected]>
Co-authored-by: Jonas Schievink <[email protected]>
Co-authored-by: Jonas Schievink <[email protected]>

1 files changed, 0 insertions, 38 deletions

diff --git a/crates/ra_hir_def/src/nameres/tests/incremental.rs b/crates/ra_hir_def/src/nameres/tests/incremental.rs
index 87165ac33..0c288a108 100644
--- a/crates/ra_hir_def/src/nameres/tests/incremental.rs
+++ b/crates/ra_hir_def/src/nameres/tests/incremental.rs
@@ -58,44 +58,6 @@ fn typing_inside_a_function_should_not_invalidate_def_map() {
 }
 
 #[test]
-fn adding_inner_items_should_not_invalidate_def_map() {
-    check_def_map_is_not_recomputed(
-        r"
-        //- /lib.rs
-        struct S { a: i32}
-        enum E { A }
-        trait T {
-            fn a() {}
-        }
-        mod foo;<|>
-        impl S {
-            fn a() {}
-        }
-        use crate::foo::bar::Baz;
-        //- /foo/mod.rs
-        pub mod bar;
-
-        //- /foo/bar.rs
-        pub struct Baz;
-        ",
-        r"
-        struct S { a: i32, b: () }
-        enum E { A, B }
-        trait T {
-            fn a() {}
-            fn b() {}
-        }
-        mod foo;<|>
-        impl S {
-            fn a() {}
-            fn b() {}
-        }
-        use crate::foo::bar::Baz;
-        ",
-    );
-}
-
-#[test]
 fn typing_inside_a_macro_should_not_invalidate_def_map() {
     let (mut db, pos) = TestDB::with_position(
         r"