Introduce 'ast::Pat::is_rest(&self) -> bool'.

2019-07-09 09:26:11 +02:00 · 2019-07-09 09:26:11 +02:00 · ff77ef2d70
commit ff77ef2d70
parent f7c75cc11a
1 changed files with 8 additions and 0 deletions
--- a/src/libsyntax/ast.rs
+++ b/src/libsyntax/ast.rs
@ -580,6 +580,14 @@ impl Pat {
            | PatKind::Mac(_) => true,
        }
    }
+
+    /// Is this a `..` pattern?
+    pub fn is_rest(&self) -> bool {
+        match self.node {
+            PatKind::Rest => true,
+            _ => false,
+        }
+    }
 }

 /// A single field in a struct pattern