Merge #3677

3677: Add support for macro in symbol_index r=kjeremy a=edwin0cheng

This PR allows macro showing up in `Open symbol` search:

![show_macro](https://user-images.githubusercontent.com/11014119/77244297-548d0b80-6c4e-11ea-8613-15926cc297b3.png)


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

1 files changed, 7 insertions, 0 deletions

diff --git a/crates/ra_ide_db/src/symbol_index.rs b/crates/ra_ide_db/src/symbol_index.rs
index 884359ee3..0f46f93c1 100644
--- a/crates/ra_ide_db/src/symbol_index.rs
+++ b/crates/ra_ide_db/src/symbol_index.rs
@@ -362,6 +362,13 @@ fn to_symbol(node: &SyntaxNode) -> Option<(SmolStr, SyntaxNodePtr, TextRange)> {
             ast::TypeAliasDef(it) => { decl(it) },
             ast::ConstDef(it) => { decl(it) },
             ast::StaticDef(it) => { decl(it) },
+            ast::MacroCall(it) => {
+                if it.is_macro_rules().is_some() {
+                    decl(it)
+                } else {
+                    None
+                }
+            },
             _ => None,
         }
     }