Merge #2318

2318: Fix panic when use `Expand Macro` on `assert_eq` r=matklad a=edwin0cheng

The cause of this [bug](https://github.com/rust-analyzer/rust-analyzer/pull/2291#issuecomment-555651542) is, when calling `SourceAnalyzer::expand` when an `ast::MacroCall` which is outside of `SourceAnalyzer::node`. 

Note that if we use a node in `SourceAnalyzer::new` with a `MacroFile` file id, the resolver inside `SourceAnalyzer` still will not work properly. Another PR will need to fix it.

Co-authored-by: Edwin Cheng <[email protected]>

1 files changed, 1 insertions, 1 deletions

diff --git a/crates/ra_ide_api/src/expand.rs b/crates/ra_ide_api/src/expand.rs
index 0ad125a9e..2f1abf509 100644
--- a/crates/ra_ide_api/src/expand.rs
+++ b/crates/ra_ide_api/src/expand.rs
@@ -55,7 +55,7 @@ pub(crate) fn descend_into_macros(
         }
         let source_analyzer =
             hir::SourceAnalyzer::new(db, token.with_value(token.value.parent()).as_ref(), None);
-        let exp = source_analyzer.expand(db, &macro_call)?;
+        let exp = source_analyzer.expand(db, token.with_value(&macro_call))?;
         exp.map_token_down(db, token.as_ref())
     })
     .last()