Merge #1161

1161: Add mbe 'item' matcher r=matklad a=edwin0cheng

Add `item` matcher in `ra_mbe` , and added corresponding `item()` parser in `ra_syntax`. 
This PR also help PR #1148 for `Items` parsing.

And hopefully fix #1149 ?!




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

1 files changed, 4 insertions, 0 deletions

diff --git a/crates/ra_mbe/src/subtree_parser.rs b/crates/ra_mbe/src/subtree_parser.rs
index f075ce245..195e4c3ac 100644
--- a/crates/ra_mbe/src/subtree_parser.rs
+++ b/crates/ra_mbe/src/subtree_parser.rs
@@ -46,6 +46,10 @@ impl<'a> Parser<'a> {
         self.parse(|src, sink| ra_parser::parse_stmt(src, sink, false))
     }
 
+    pub fn parse_item(self) -> Option<tt::TokenTree> {
+        self.parse(ra_parser::parse_item)
+    }
+
     fn parse<F>(self, f: F) -> Option<tt::TokenTree>
     where
         F: FnOnce(&dyn TokenSource, &mut dyn TreeSink),