check cancellation when expanding macros

Author: matklad

crates/ra_hir/src/ids.rs

@@ -61,6 +61,7 @@ impl HirFileId {
         db: &impl DefDatabase,
         file_id: HirFileId,
     ) -> Option<TreeArc<SyntaxNode>> {
+        db.check_canceled();
         let _p = profile("parse_or_expand_query");
         match file_id.0 {
             HirFileIdRepr::File(file_id) => Some(db.parse(file_id).syntax().to_owned()),

crates/ra_lsp_server/tests/heavy_tests/main.rs

@@ -365,7 +365,6 @@ fn main() {{}}
         librs, libs
     ));
     server.wait_until_workspace_is_loaded();
-    eprintln!("workspace loaded");
     for i in 0..10 {
         server.notification::<DidOpenTextDocument>(DidOpenTextDocumentParams {
             text_document: TextDocumentItem {
@@ -376,7 +375,6 @@ fn main() {{}}
             },
         });
     }
-    eprintln!("docs opened");
     let start = std::time::Instant::now();
     server.request::<OnEnter>(
         TextDocumentPositionParams {
@@ -407,5 +405,6 @@ fn main() {{}}
           }
         }),
     );
-    eprintln!("handled: {:?}", start.elapsed());
+    let elapsed = start.elapsed();
+    assert!(elapsed.as_millis() < 2000, "typing enter took {:?}", elapsed);
 }