full range expr

2018-08-14 11:46:46 +03:00
parent 2b828c68e8
commit de02d2891e
3 changed files with 34 additions and 1 deletions
--- a/crates/libsyntax2/src/grammar/expressions/mod.rs
+++ b/crates/libsyntax2/src/grammar/expressions/mod.rs
@@ -174,10 +174,14 @@ fn lhs(p: &mut Parser, r: Restrictions) -> Option<CompletedMarker> {
            p.bump();
            PREFIX_EXPR
        }
+        // test full_range_expr
+        // fn foo() { xs[..]; }
        DOTDOT => {
            m = p.start();
            p.bump();
-            expr_bp(p, r, 2);
+            if EXPR_FIRST.contains(p.current()) {
+                expr_bp(p, r, 2);
+            }
            return Some(m.complete(p, RANGE_EXPR));
        }
        _ => {